diff --git a/CMakeLists.txt b/CMakeLists.txt
index 21a398e31a4f876e0dfcbb616f2c83943f008987..75f5795db681f09c89de69c344615b53038addaa 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,23 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 #-----------------------------------------------------------------------------
 # We don't allow in-source builds. This causes no end of troubles because
diff --git a/GNUmakefile b/GNUmakefile
index feca1236e72b62b8fa70bb04554ffbd5af851a1f..957ea1702e620c82c71dedea1508223a25754fcc 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # This Makefile does an out-of-source CMake build in ../build_`OS`_`CPU`
 # eg:
diff --git a/build_files/build_environment/CMakeLists.txt b/build_files/build_environment/CMakeLists.txt
index 0d305e0dd1f9aab31b64a02a2fb6e725093dbe7e..40e5c35f99045859a443b9b0a45b25a08708adb5 100644
--- a/build_files/build_environment/CMakeLists.txt
+++ b/build_files/build_environment/CMakeLists.txt
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ####################################################################################################
 #
diff --git a/build_files/build_environment/cmake/alembic.cmake b/build_files/build_environment/cmake/alembic.cmake
index 9bc5a3778e2c41995d352459582eea3ae3b348c9..29251afe58ff2bdf50c8c14078df98713c4d79bb 100644
--- a/build_files/build_environment/cmake/alembic.cmake
+++ b/build_files/build_environment/cmake/alembic.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(ALEMBIC_EXTRA_ARGS
   -DBUILDSTATIC=ON
diff --git a/build_files/build_environment/cmake/blosc.cmake b/build_files/build_environment/cmake/blosc.cmake
index ce88f08172264df2a206ae12caf45942e995dc20..57817a075c70065800e89b417d860f79afea4939 100644
--- a/build_files/build_environment/cmake/blosc.cmake
+++ b/build_files/build_environment/cmake/blosc.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(BLOSC_EXTRA_ARGS
   -DZLIB_INCLUDE_DIR=${LIBDIR}/zlib/include/
diff --git a/build_files/build_environment/cmake/boost.cmake b/build_files/build_environment/cmake/boost.cmake
index f2944a41af8f99db30c3bd564eb2bbe64f88f10b..ca60bf832f58f77c119f55a891b276ca9e1574cb 100644
--- a/build_files/build_environment/cmake/boost.cmake
+++ b/build_files/build_environment/cmake/boost.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(BOOST_ADDRESS_MODEL 64)
 
diff --git a/build_files/build_environment/cmake/brotli.cmake b/build_files/build_environment/cmake/brotli.cmake
index 3264fa2516fa80887b6c9435059e9f57a8c5b01e..59618067e22ca9c6a8b67da571526c266eb4b3e2 100644
--- a/build_files/build_environment/cmake/brotli.cmake
+++ b/build_files/build_environment/cmake/brotli.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(BROTLI_EXTRA_ARGS
 )
diff --git a/build_files/build_environment/cmake/bzip2.cmake b/build_files/build_environment/cmake/bzip2.cmake
index d60a50a148d5f9e61bed316eafb035d5f225f426..4d627bbdeb660098ceec6f11657d722308057f46 100644
--- a/build_files/build_environment/cmake/bzip2.cmake
+++ b/build_files/build_environment/cmake/bzip2.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(BZIP2_PREFIX "${LIBDIR}/bzip2")
 set(BZIP2_CONFIGURE_ENV echo .)
diff --git a/build_files/build_environment/cmake/check_software.cmake b/build_files/build_environment/cmake/check_software.cmake
index 33c565832d93276e375e544fc90ae64cfd33ab52..2a1aaef0beeab920ab27722c905ce9f176eac244 100644
--- a/build_files/build_environment/cmake/check_software.cmake
+++ b/build_files/build_environment/cmake/check_software.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(UNIX)
   if(APPLE)
diff --git a/build_files/build_environment/cmake/clew.cmake b/build_files/build_environment/cmake/clew.cmake
index 57189844ae582ca1b4fa077fe4f8dc421f04757c..8c965d52d2ce95285c4b83a37dbe137c0d1ce208 100644
--- a/build_files/build_environment/cmake/clew.cmake
+++ b/build_files/build_environment/cmake/clew.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(CLEW_EXTRA_ARGS)
 
diff --git a/build_files/build_environment/cmake/cuew.cmake b/build_files/build_environment/cmake/cuew.cmake
index 39b3ac3b0cd14cb937b810aa25c1c2e8d6bd03ab..8beb8b4fadeda3168fe7f9534fe9976b73430420 100644
--- a/build_files/build_environment/cmake/cuew.cmake
+++ b/build_files/build_environment/cmake/cuew.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(CUEW_EXTRA_ARGS)
 
diff --git a/build_files/build_environment/cmake/embree.cmake b/build_files/build_environment/cmake/embree.cmake
index b1d5dff91a013aa57825a3b04625a4302c6e2b7f..229c1800e166d039a777d9818ad6b8db3209c361 100644
--- a/build_files/build_environment/cmake/embree.cmake
+++ b/build_files/build_environment/cmake/embree.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # Note the utility apps may use png/tiff/gif system libraries, but the
 # library itself does not depend on them, so should give no problems.
diff --git a/build_files/build_environment/cmake/expat.cmake b/build_files/build_environment/cmake/expat.cmake
index 13dd1a6b87418586d706bd923dd5e847e06b3660..3eff9493df645d5abc080f772819c827a0e358d0 100644
--- a/build_files/build_environment/cmake/expat.cmake
+++ b/build_files/build_environment/cmake/expat.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(EXPAT_EXTRA_ARGS
   -DEXPAT_BUILD_DOCS=OFF
diff --git a/build_files/build_environment/cmake/ffi.cmake b/build_files/build_environment/cmake/ffi.cmake
index 53d9e7be8efa9e2b12e671a4ee859e4d2d31de6a..b92c503b61f533964a36cd6eb5907160f04f719c 100644
--- a/build_files/build_environment/cmake/ffi.cmake
+++ b/build_files/build_environment/cmake/ffi.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_ffi
   URL file://${PACKAGE_DIR}/${FFI_FILE}
diff --git a/build_files/build_environment/cmake/ffmpeg.cmake b/build_files/build_environment/cmake/ffmpeg.cmake
index 81bcb6d202c6bbd00ade319fb7cdbb53f0c7e914..4cf96ee2fcb309d46eec366a258e5e26891ba730 100644
--- a/build_files/build_environment/cmake/ffmpeg.cmake
+++ b/build_files/build_environment/cmake/ffmpeg.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(FFMPEG_CFLAGS "-I${mingw_LIBDIR}/lame/include -I${mingw_LIBDIR}/openjpeg/include/ -I${mingw_LIBDIR}/ogg/include -I${mingw_LIBDIR}/vorbis/include -I${mingw_LIBDIR}/theora/include -I${mingw_LIBDIR}/opus/include -I${mingw_LIBDIR}/vpx/include -I${mingw_LIBDIR}/x264/include -I${mingw_LIBDIR}/xvidcore/include -I${mingw_LIBDIR}/zlib/include")
 set(FFMPEG_LDFLAGS "-L${mingw_LIBDIR}/lame/lib -L${mingw_LIBDIR}/openjpeg/lib -L${mingw_LIBDIR}/ogg/lib -L${mingw_LIBDIR}/vorbis/lib -L${mingw_LIBDIR}/theora/lib -L${mingw_LIBDIR}/opus/lib -L${mingw_LIBDIR}/vpx/lib -L${mingw_LIBDIR}/x264/lib -L${mingw_LIBDIR}/xvidcore/lib -L${mingw_LIBDIR}/zlib/lib")
diff --git a/build_files/build_environment/cmake/fftw.cmake b/build_files/build_environment/cmake/fftw.cmake
index fb2f0e1ea6ab12079a8026223d721c2788bc9195..8f6ef7b6cc9e1b85fba16924433cbcbb3681714d 100644
--- a/build_files/build_environment/cmake/fftw.cmake
+++ b/build_files/build_environment/cmake/fftw.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(FFTW_EXTRA_ARGS)
 
diff --git a/build_files/build_environment/cmake/flac.cmake b/build_files/build_environment/cmake/flac.cmake
index 20c5b5d3544d1e49cf2e669e03e7a4865b35bee3..c623fc426a9ab6068a3e518ed5bffa413fa90c22 100644
--- a/build_files/build_environment/cmake/flac.cmake
+++ b/build_files/build_environment/cmake/flac.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_flac
   URL file://${PACKAGE_DIR}/${FLAC_FILE}
diff --git a/build_files/build_environment/cmake/flex.cmake b/build_files/build_environment/cmake/flex.cmake
index 5daad6ce64bdda4059cbd6618a02c6db0f9c3535..2b04c8d5d681573ace49ef42268b9c8bd980f0d0 100644
--- a/build_files/build_environment/cmake/flex.cmake
+++ b/build_files/build_environment/cmake/flex.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_flex
   URL file://${PACKAGE_DIR}/${FLEX_FILE}
diff --git a/build_files/build_environment/cmake/flexbison.cmake b/build_files/build_environment/cmake/flexbison.cmake
index 1c8adfc313c0ca7dcbfea9ff20256a71a3d1b712..ec0301658d8b281146d76bbcde3c08792bac3628 100644
--- a/build_files/build_environment/cmake/flexbison.cmake
+++ b/build_files/build_environment/cmake/flexbison.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(FLEXBISON_EXTRA_ARGS)
 
diff --git a/build_files/build_environment/cmake/freeglut.cmake b/build_files/build_environment/cmake/freeglut.cmake
index ce51fac4724756ffb38372d00c6aef415abd74cc..9c1dba1d11eb15f0238cee9bcec43f854c15df2b 100644
--- a/build_files/build_environment/cmake/freeglut.cmake
+++ b/build_files/build_environment/cmake/freeglut.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WIN32)
   if(BUILD_MODE STREQUAL Release)
diff --git a/build_files/build_environment/cmake/freetype.cmake b/build_files/build_environment/cmake/freetype.cmake
index c6663c287b1fd8f3d69015328a64ec9fdf3c1be0..b6f53ede2db7a12207109d61bb2b43c48b695e6f 100644
--- a/build_files/build_environment/cmake/freetype.cmake
+++ b/build_files/build_environment/cmake/freetype.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(FREETYPE_EXTRA_ARGS
   -DCMAKE_RELEASE_POSTFIX:STRING=2ST
diff --git a/build_files/build_environment/cmake/glew.cmake b/build_files/build_environment/cmake/glew.cmake
index b37aaf77c78cb0706d3a43060a2495091b74681b..0745ad01533307a5bd34b7b0c7d95e515a27e62c 100644
--- a/build_files/build_environment/cmake/glew.cmake
+++ b/build_files/build_environment/cmake/glew.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(GLEW_EXTRA_ARGS
   -DBUILD_UTILS=Off
diff --git a/build_files/build_environment/cmake/glfw.cmake b/build_files/build_environment/cmake/glfw.cmake
index eefdfd49664846585ce1d4444644fea9d7bd88d0..29fce7609e535a8cd591f3f2a93ff8427f5f3ed1 100644
--- a/build_files/build_environment/cmake/glfw.cmake
+++ b/build_files/build_environment/cmake/glfw.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(GLFW_EXTRA_ARGS)
 
diff --git a/build_files/build_environment/cmake/gmp.cmake b/build_files/build_environment/cmake/gmp.cmake
index dbcce12d24bbc666d135990bc6904d26ffe1519a..e624778869e861e119dbe04b4446a4b1f92b9c6b 100644
--- a/build_files/build_environment/cmake/gmp.cmake
+++ b/build_files/build_environment/cmake/gmp.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(GMP_EXTRA_ARGS -enable-cxx)
 
diff --git a/build_files/build_environment/cmake/haru.cmake b/build_files/build_environment/cmake/haru.cmake
index 4ea838578038b0e37152abf1b8f55b6e4e2eee12..3440be1dbdacaa854b43284ced074a4fae88c853 100644
--- a/build_files/build_environment/cmake/haru.cmake
+++ b/build_files/build_environment/cmake/haru.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(HARU_EXTRA_ARGS
   -DLIBHPDF_SHARED=OFF
diff --git a/build_files/build_environment/cmake/harvest.cmake b/build_files/build_environment/cmake/harvest.cmake
index 0e68e720b44ac913ddf4e38d762e9f7dfe6e5b74..28f921b30d8ed5e688670736f6361b6baa8e5f64 100644
--- a/build_files/build_environment/cmake/harvest.cmake
+++ b/build_files/build_environment/cmake/harvest.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ########################################################################
 # Copy all generated files to the proper structure as blender prefers
diff --git a/build_files/build_environment/cmake/iconv.cmake b/build_files/build_environment/cmake/iconv.cmake
index bb9fe24e0fb184e593af75ecde2aaf776d0056b0..34b4718a190ee1b9c5bba02bcdc232a515cc91d8 100644
--- a/build_files/build_environment/cmake/iconv.cmake
+++ b/build_files/build_environment/cmake/iconv.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(ICONV_EXTRA_ARGS)
 
diff --git a/build_files/build_environment/cmake/ispc.cmake b/build_files/build_environment/cmake/ispc.cmake
index b1cd2cea0c78d70daa77ad654fd8a193e8939db2..160088bc16fdf9d8586aebeb1041a7f5d8208c87 100644
--- a/build_files/build_environment/cmake/ispc.cmake
+++ b/build_files/build_environment/cmake/ispc.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WIN32)
   set(ISPC_EXTRA_ARGS_WIN
diff --git a/build_files/build_environment/cmake/jemalloc.cmake b/build_files/build_environment/cmake/jemalloc.cmake
index f156ae0fe40f05ecd49a653cb8832f5bd7b31f40..351fbe4ae050b4a8d823a588dc47b372535bf99f 100644
--- a/build_files/build_environment/cmake/jemalloc.cmake
+++ b/build_files/build_environment/cmake/jemalloc.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_jemalloc
   URL file://${PACKAGE_DIR}/${JEMALLOC_FILE}
diff --git a/build_files/build_environment/cmake/jpeg.cmake b/build_files/build_environment/cmake/jpeg.cmake
index d9eca5ed5cd66e0694154c0811353343b5c41857..7c37f2cd25e601c9fdfabd890fec64ec801e62e4 100644
--- a/build_files/build_environment/cmake/jpeg.cmake
+++ b/build_files/build_environment/cmake/jpeg.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WIN32)
   # cmake for windows
diff --git a/build_files/build_environment/cmake/lame.cmake b/build_files/build_environment/cmake/lame.cmake
index c6570642c84c4eaa3b281ba013a5e29b720f1d8c..3a6615312cab8c84fcf128a618e543c8ab2ca8f4 100644
--- a/build_files/build_environment/cmake/lame.cmake
+++ b/build_files/build_environment/cmake/lame.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(LAME_EXTRA_ARGS)
 if(MSVC)
diff --git a/build_files/build_environment/cmake/libglu.cmake b/build_files/build_environment/cmake/libglu.cmake
index da0a48f62642d315aeb6ac8ca965e3d8e0cfe080..d07fbd011838e5ad48ad862486448c401bb1a8af 100644
--- a/build_files/build_environment/cmake/libglu.cmake
+++ b/build_files/build_environment/cmake/libglu.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(LIBGLU_CFLAGS "-static-libgcc")
 set(LIBGLU_CXXFLAGS "-static-libgcc -static-libstdc++ -Bstatic -lstdc++ -Bdynamic -l:libstdc++.a")
diff --git a/build_files/build_environment/cmake/llvm.cmake b/build_files/build_environment/cmake/llvm.cmake
index 7a8ce2ddfec4f73a9a049e63e1fc7ca570c46d04..cf92a5175a3511ef490ad9672c42232fa86bc87a 100644
--- a/build_files/build_environment/cmake/llvm.cmake
+++ b/build_files/build_environment/cmake/llvm.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(BLENDER_PLATFORM_ARM)
   set(LLVM_TARGETS AArch64$<SEMICOLON>ARM)
diff --git a/build_files/build_environment/cmake/lzma.cmake b/build_files/build_environment/cmake/lzma.cmake
index bd08e7be0e45d444f26a1019c276aa7c26ada929..ead975f75a9c484d50c2ffbbcb8546b215a06560 100644
--- a/build_files/build_environment/cmake/lzma.cmake
+++ b/build_files/build_environment/cmake/lzma.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(LZMA_PATCH_CMD echo .)
 
diff --git a/build_files/build_environment/cmake/mesa.cmake b/build_files/build_environment/cmake/mesa.cmake
index 45cc244e81372e1478995e4ba2f13a42fa2c2371..8a40e8dc0decbe9a74575f1504c86642191dad74 100644
--- a/build_files/build_environment/cmake/mesa.cmake
+++ b/build_files/build_environment/cmake/mesa.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(MESA_CFLAGS "-static-libgcc")
 set(MESA_CXXFLAGS "-static-libgcc -static-libstdc++ -Bstatic -lstdc++ -Bdynamic -l:libstdc++.a")
diff --git a/build_files/build_environment/cmake/nanovdb.cmake b/build_files/build_environment/cmake/nanovdb.cmake
index 66bbb9f10d7f1b7bfca07a9361076dc1e65ec4f8..eb6bd618c003af0ff243240968a947e7bc544f68 100644
--- a/build_files/build_environment/cmake/nanovdb.cmake
+++ b/build_files/build_environment/cmake/nanovdb.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(NANOVDB_EXTRA_ARGS
    # NanoVDB is header-only, so only need the install target
diff --git a/build_files/build_environment/cmake/nasm.cmake b/build_files/build_environment/cmake/nasm.cmake
index 3187e2b80453b3da4812be33f9ad75609744378a..166f8522e78b6590763674b07266b08b868ae6b1 100644
--- a/build_files/build_environment/cmake/nasm.cmake
+++ b/build_files/build_environment/cmake/nasm.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_nasm
   URL file://${PACKAGE_DIR}/${NASM_FILE}
diff --git a/build_files/build_environment/cmake/numpy.cmake b/build_files/build_environment/cmake/numpy.cmake
index 1b58fd6aee9d872991a42926bb6ab0a19c9f0873..ea27b0deb5136c7b8f2340d928f56db99c4c0e17 100644
--- a/build_files/build_environment/cmake/numpy.cmake
+++ b/build_files/build_environment/cmake/numpy.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(MSVC)
   message("BIN >${PYTHON_BINARY}<")
diff --git a/build_files/build_environment/cmake/ogg.cmake b/build_files/build_environment/cmake/ogg.cmake
index 16257c6f039d3ac5afe22bb52f08abde7111b50f..feb317107d6e44d0620145cbd374c8848decf343 100644
--- a/build_files/build_environment/cmake/ogg.cmake
+++ b/build_files/build_environment/cmake/ogg.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_ogg
   URL file://${PACKAGE_DIR}/${OGG_FILE}
diff --git a/build_files/build_environment/cmake/openal.cmake b/build_files/build_environment/cmake/openal.cmake
index 36165d9857c85111fab38c411d0dfc083df5f4b8..379d48eb5100433b0cac06139b796b139fec0e62 100644
--- a/build_files/build_environment/cmake/openal.cmake
+++ b/build_files/build_environment/cmake/openal.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(BUILD_MODE STREQUAL Release)
   set(OPENAL_EXTRA_ARGS
diff --git a/build_files/build_environment/cmake/opencollada.cmake b/build_files/build_environment/cmake/opencollada.cmake
index 417c4d215944841f23e597296b578ddbeff98b47..b2ae1a1a35169f7a8fc9aca591c311859ea0502a 100644
--- a/build_files/build_environment/cmake/opencollada.cmake
+++ b/build_files/build_environment/cmake/opencollada.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(UNIX)
   set(OPENCOLLADA_EXTRA_ARGS
diff --git a/build_files/build_environment/cmake/opencolorio.cmake b/build_files/build_environment/cmake/opencolorio.cmake
index 28c93973cf53e757baeabb064aca5319633cc245..e4ac1ff889095269fc5e3c67eb05c7a5924ebb16 100644
--- a/build_files/build_environment/cmake/opencolorio.cmake
+++ b/build_files/build_environment/cmake/opencolorio.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(OPENCOLORIO_EXTRA_ARGS
   -DOCIO_BUILD_APPS=OFF
diff --git a/build_files/build_environment/cmake/openexr.cmake b/build_files/build_environment/cmake/openexr.cmake
index 0ca7693aeb78d012ca7cd3cd94e4868e24fdfce3..9bebada7a666f9f1acf4b70cd5f03464ac972644 100644
--- a/build_files/build_environment/cmake/openexr.cmake
+++ b/build_files/build_environment/cmake/openexr.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WIN32)
   set(OPENEXR_CMAKE_CXX_STANDARD_LIBRARIES "kernel32${LIBEXT} user32${LIBEXT} gdi32${LIBEXT} winspool${LIBEXT} shell32${LIBEXT} ole32${LIBEXT} oleaut32${LIBEXT} uuid${LIBEXT} comdlg32${LIBEXT} advapi32${LIBEXT} psapi${LIBEXT}")
diff --git a/build_files/build_environment/cmake/openimagedenoise.cmake b/build_files/build_environment/cmake/openimagedenoise.cmake
index aca2b4cef9feca7d5153728960b251f9af392dbe..8b528de7ee46541a8e7e1804f0ae60bdc65146c3 100644
--- a/build_files/build_environment/cmake/openimagedenoise.cmake
+++ b/build_files/build_environment/cmake/openimagedenoise.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 
 set(OIDN_EXTRA_ARGS
diff --git a/build_files/build_environment/cmake/openimageio.cmake b/build_files/build_environment/cmake/openimageio.cmake
index a8f4025b0badfd7071f656e8485a5cc632d1e026..755cd6fbba917de10a63b6dff829bf4faa3d8220 100644
--- a/build_files/build_environment/cmake/openimageio.cmake
+++ b/build_files/build_environment/cmake/openimageio.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(BUILD_MODE STREQUAL Release)
   set(OIIO_TOOLS ON)
diff --git a/build_files/build_environment/cmake/openjpeg.cmake b/build_files/build_environment/cmake/openjpeg.cmake
index 9396e05aff8bf3ed61cacae50d09bf123fbf40d6..cdb808d60b48c7e495b3cc95d4813e29f1db7adf 100644
--- a/build_files/build_environment/cmake/openjpeg.cmake
+++ b/build_files/build_environment/cmake/openjpeg.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # Note the encoder/decoder may use png/tiff/lcms system libraries, but the
 # library itself does not depend on them, so should give no problems.
diff --git a/build_files/build_environment/cmake/openmp.cmake b/build_files/build_environment/cmake/openmp.cmake
index d4d5e69a5ad25acfb023016437e4e9cf8a7e2cf8..6570d585ebfd184123f4767beea937bed9328784 100644
--- a/build_files/build_environment/cmake/openmp.cmake
+++ b/build_files/build_environment/cmake/openmp.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(APPLE)
   set(OPENMP_PATCH_COMMAND ${PATCH_CMD} -p 1 -d ${BUILD_DIR}/openmp/src/external_openmp < ${PATCH_DIR}/openmp.diff)
diff --git a/build_files/build_environment/cmake/opensubdiv.cmake b/build_files/build_environment/cmake/opensubdiv.cmake
index c5da9e94ba4552bd9acf1986aa35abf4dad19c77..847ff3f6dafdd0e7a86803d2a27613908f5ab620 100644
--- a/build_files/build_environment/cmake/opensubdiv.cmake
+++ b/build_files/build_environment/cmake/opensubdiv.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(OPENSUBDIV_EXTRA_ARGS
   -DNO_EXAMPLES=ON
diff --git a/build_files/build_environment/cmake/openvdb.cmake b/build_files/build_environment/cmake/openvdb.cmake
index 11415416d74ce14d45a54b95545698168c43e0be..f1b7c3d1b7d04bb87ebddc5fdcee6117d5da90ea 100644
--- a/build_files/build_environment/cmake/openvdb.cmake
+++ b/build_files/build_environment/cmake/openvdb.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(BUILD_MODE STREQUAL Debug)
   set(BLOSC_POST _d)
diff --git a/build_files/build_environment/cmake/options.cmake b/build_files/build_environment/cmake/options.cmake
index b37971be2a6dfcdb3b4cc3d273244ab79ddfa04c..5cf197b59b76828cfbabcf9daaeee53423c7a7cf 100644
--- a/build_files/build_environment/cmake/options.cmake
+++ b/build_files/build_environment/cmake/options.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WIN32)
   option(ENABLE_MINGW64 "Enable building of ffmpeg/iconv/libsndfile/fftw3 by installing mingw64" ON)
diff --git a/build_files/build_environment/cmake/opus.cmake b/build_files/build_environment/cmake/opus.cmake
index 5037850aca32b802d6faf6d5a7f5a7645aa63074..f4f77749e0052657bb3e97523bc989acf1bf8b1a 100644
--- a/build_files/build_environment/cmake/opus.cmake
+++ b/build_files/build_environment/cmake/opus.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_opus
   URL file://${PACKAGE_DIR}/${OPUS_FILE}
diff --git a/build_files/build_environment/cmake/osl.cmake b/build_files/build_environment/cmake/osl.cmake
index c20bf68c0ef60474463cb80b8ecd4915f68c082f..a14ca46334a6c35459a50cef633d816d41b3ae2b 100644
--- a/build_files/build_environment/cmake/osl.cmake
+++ b/build_files/build_environment/cmake/osl.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WIN32)
   set(OSL_CMAKE_CXX_STANDARD_LIBRARIES "kernel32${LIBEXT} user32${LIBEXT} gdi32${LIBEXT} winspool${LIBEXT} shell32${LIBEXT} ole32${LIBEXT} oleaut32${LIBEXT} uuid${LIBEXT} comdlg32${LIBEXT} advapi32${LIBEXT} psapi${LIBEXT}")
diff --git a/build_files/build_environment/cmake/package_python.cmake b/build_files/build_environment/cmake/package_python.cmake
index f5bf05dc024d840452b8870505a8764b9dedfffe..8b3bc7720c506b67b934a8859ed469cd8737ac37 100644
--- a/build_files/build_environment/cmake/package_python.cmake
+++ b/build_files/build_environment/cmake/package_python.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(MSVC)
   set(PYTARGET ${HARVEST_TARGET}/python/${PYTHON_SHORT_VERSION_NO_DOTS})
diff --git a/build_files/build_environment/cmake/png.cmake b/build_files/build_environment/cmake/png.cmake
index 3fc53b238c2de4ff4e3d62dba399322489cbb355..890be673cb804fe4aaa17b511a53425eee314101 100644
--- a/build_files/build_environment/cmake/png.cmake
+++ b/build_files/build_environment/cmake/png.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(PNG_EXTRA_ARGS
   -DZLIB_LIBRARY=${LIBDIR}/zlib/lib/${ZLIB_LIBRARY}
diff --git a/build_files/build_environment/cmake/potrace.cmake b/build_files/build_environment/cmake/potrace.cmake
index 999e093d811796dffa378668f8ad6830591c81f7..3d32d9cb327f40b1f0fd95b21b649c8eb5fd58a3 100644
--- a/build_files/build_environment/cmake/potrace.cmake
+++ b/build_files/build_environment/cmake/potrace.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(POTRACE_EXTRA_ARGS
 )
diff --git a/build_files/build_environment/cmake/pthreads.cmake b/build_files/build_environment/cmake/pthreads.cmake
index 9caae71daf1cf5651ce1569e6a14d555b31a29e7..6eaf670d39dc22dfd24214c1e628c53cf2df8ca7 100644
--- a/build_files/build_environment/cmake/pthreads.cmake
+++ b/build_files/build_environment/cmake/pthreads.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WIN32)
 
diff --git a/build_files/build_environment/cmake/pugixml.cmake b/build_files/build_environment/cmake/pugixml.cmake
index 41f15c5ef14d054a5b39b41ed8fbc0c3c52e47ad..ddd29bf5d16179050cb23c6fce68f7186adea4ec 100644
--- a/build_files/build_environment/cmake/pugixml.cmake
+++ b/build_files/build_environment/cmake/pugixml.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(PUGIXML_EXTRA_ARGS
 )
diff --git a/build_files/build_environment/cmake/python.cmake b/build_files/build_environment/cmake/python.cmake
index 943db878c901564d0baf94aea88d0172b74032a5..3f45333ed3d12374d22baa4c91cebb7203f15997 100644
--- a/build_files/build_environment/cmake/python.cmake
+++ b/build_files/build_environment/cmake/python.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(PYTHON_POSTFIX)
 if(BUILD_MODE STREQUAL Debug)
diff --git a/build_files/build_environment/cmake/python_site_packages.cmake b/build_files/build_environment/cmake/python_site_packages.cmake
index e58c3d90b4da952344afa5f37df31221dc32cb9f..d0e509390655cd4114d55c3fc3d689b45501d62b 100644
--- a/build_files/build_environment/cmake/python_site_packages.cmake
+++ b/build_files/build_environment/cmake/python_site_packages.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WIN32 AND BUILD_MODE STREQUAL Debug)
   set(SITE_PACKAGES_EXTRA --global-option build --global-option --debug)
diff --git a/build_files/build_environment/cmake/sdl.cmake b/build_files/build_environment/cmake/sdl.cmake
index c55949882342a9e99f4eeb7b2db8cb743a2c07d7..4f6875064d315f118a2bf1a8b8857d692c8bc99e 100644
--- a/build_files/build_environment/cmake/sdl.cmake
+++ b/build_files/build_environment/cmake/sdl.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WIN32)
   set(SDL_EXTRA_ARGS
diff --git a/build_files/build_environment/cmake/setup_mingw64.cmake b/build_files/build_environment/cmake/setup_mingw64.cmake
index e370da049d5e164890d9f326dc06157b11a4725a..fa65212e0565a028795f7fa5d78efa502bfa288c 100644
--- a/build_files/build_environment/cmake/setup_mingw64.cmake
+++ b/build_files/build_environment/cmake/setup_mingw64.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ####################################################################################################################
 # Mingw64 Builds
diff --git a/build_files/build_environment/cmake/sndfile.cmake b/build_files/build_environment/cmake/sndfile.cmake
index 37cee40456175b601f2b11504c25c42b6dca8287..192c25f5ed18dbaf5616aa2c73a08ef13064f363 100644
--- a/build_files/build_environment/cmake/sndfile.cmake
+++ b/build_files/build_environment/cmake/sndfile.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(SNDFILE_EXTRA_ARGS)
 set(SNDFILE_ENV PKG_CONFIG_PATH=${mingw_LIBDIR}/ogg/lib/pkgconfig:${mingw_LIBDIR}/vorbis/lib/pkgconfig:${mingw_LIBDIR}/flac/lib/pkgconfig:${mingw_LIBDIR})
diff --git a/build_files/build_environment/cmake/spnav.cmake b/build_files/build_environment/cmake/spnav.cmake
index 3a0cacc3d8686c88b57a4d1b5c13e24483853457..33a262cbc8660d14617e77506361950eebab2fc7 100644
--- a/build_files/build_environment/cmake/spnav.cmake
+++ b/build_files/build_environment/cmake/spnav.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_spnav
   URL file://${PACKAGE_DIR}/${SPNAV_FILE}
diff --git a/build_files/build_environment/cmake/sqlite.cmake b/build_files/build_environment/cmake/sqlite.cmake
index 16fee8264de8dd11cbed29f2c92746ecf860decd..c82d832574a835aff76f91ac2d12e12dc33c5d07 100644
--- a/build_files/build_environment/cmake/sqlite.cmake
+++ b/build_files/build_environment/cmake/sqlite.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(SQLITE_CONFIGURE_ENV echo .)
 set(SQLITE_CONFIGURATION_ARGS)
diff --git a/build_files/build_environment/cmake/sse2neon.cmake b/build_files/build_environment/cmake/sse2neon.cmake
index d7987fdfd2f5712672f909c7da66df1596159273..2216ad43d5957b06d0e475b7a8b13c8b277f0bcc 100644
--- a/build_files/build_environment/cmake/sse2neon.cmake
+++ b/build_files/build_environment/cmake/sse2neon.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_sse2neon
   GIT_REPOSITORY  ${SSE2NEON_GIT}
diff --git a/build_files/build_environment/cmake/ssl.cmake b/build_files/build_environment/cmake/ssl.cmake
index 615b88167ece9e183bcd977f7fd302ff805d4aec..21c4d2418c3e09ceb360ce49a86fd0b0db5a420b 100644
--- a/build_files/build_environment/cmake/ssl.cmake
+++ b/build_files/build_environment/cmake/ssl.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(SSL_CONFIGURE_COMMAND ./Configure)
 set(SSL_PATCH_CMD echo .)
diff --git a/build_files/build_environment/cmake/tbb.cmake b/build_files/build_environment/cmake/tbb.cmake
index c08ecebc0694753d895a58a8d05c03bba62f6626..1c251fa37d94a5fdbb0abb13f8da17c423f30627 100644
--- a/build_files/build_environment/cmake/tbb.cmake
+++ b/build_files/build_environment/cmake/tbb.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 if(WIN32)
   set(TBB_EXTRA_ARGS
     -DTBB_BUILD_SHARED=On
diff --git a/build_files/build_environment/cmake/theora.cmake b/build_files/build_environment/cmake/theora.cmake
index fc69fed918d9fd7ca3894ae6d628a52e3a2703dc..707d8aa2ce3a818fb008e1d35b4f64635b406c59 100644
--- a/build_files/build_environment/cmake/theora.cmake
+++ b/build_files/build_environment/cmake/theora.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(UNIX)
   set(THEORA_CONFIGURE_ENV ${CONFIGURE_ENV} && export HAVE_PDFLATEX=no)
diff --git a/build_files/build_environment/cmake/tiff.cmake b/build_files/build_environment/cmake/tiff.cmake
index 85f6643c4efad016e50b5b9ee2697cc96b655d49..fe64c56d67049f618d2559957527260f6eebb95a 100644
--- a/build_files/build_environment/cmake/tiff.cmake
+++ b/build_files/build_environment/cmake/tiff.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WITH_WEBP)
   set(WITH_TIFF_WEBP ON)
diff --git a/build_files/build_environment/cmake/usd.cmake b/build_files/build_environment/cmake/usd.cmake
index 913cbdec3d3f5c7be5ec1b93eae89aabf1cf2899..26b728b58011a0a94f7242c432f7defd9801bde6 100644
--- a/build_files/build_environment/cmake/usd.cmake
+++ b/build_files/build_environment/cmake/usd.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(USD_EXTRA_ARGS
   -DBoost_COMPILER:STRING=${BOOST_COMPILER_STRING}
diff --git a/build_files/build_environment/cmake/versions.cmake b/build_files/build_environment/cmake/versions.cmake
index 8669acb62750678d875dc6d6cf089f72ffc67ece..d4cccb05ce4dc23194295dbed7d889daad0a81c3 100644
--- a/build_files/build_environment/cmake/versions.cmake
+++ b/build_files/build_environment/cmake/versions.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(ZLIB_VERSION 1.2.11)
 set(ZLIB_URI https://zlib.net/zlib-${ZLIB_VERSION}.tar.gz)
diff --git a/build_files/build_environment/cmake/vorbis.cmake b/build_files/build_environment/cmake/vorbis.cmake
index 579b4c5a2988ce23eb065d5ac7724d6d7ae2fea6..2f3f2b310ba0925931500c6038408a3d1463baf4 100644
--- a/build_files/build_environment/cmake/vorbis.cmake
+++ b/build_files/build_environment/cmake/vorbis.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_vorbis
   URL file://${PACKAGE_DIR}/${VORBIS_FILE}
diff --git a/build_files/build_environment/cmake/vpx.cmake b/build_files/build_environment/cmake/vpx.cmake
index ab56228e81b8fe6fd162aa778cdc3915330af559..ba17acad80f8346c35f07d177cc08a709418242b 100644
--- a/build_files/build_environment/cmake/vpx.cmake
+++ b/build_files/build_environment/cmake/vpx.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WIN32)
   if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
diff --git a/build_files/build_environment/cmake/wayland_protocols.cmake b/build_files/build_environment/cmake/wayland_protocols.cmake
index 02db453be42f93a87d0e56834175ddb6efbfa6e9..23d29b492607540a71b44c5d198922c58907b2fb 100644
--- a/build_files/build_environment/cmake/wayland_protocols.cmake
+++ b/build_files/build_environment/cmake/wayland_protocols.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_wayland_protocols
   URL file://${PACKAGE_DIR}/${WL_PROTOCOLS_FILE}
diff --git a/build_files/build_environment/cmake/webp.cmake b/build_files/build_environment/cmake/webp.cmake
index 61f53ca63c61170f890eda810d9386e827636fed..472d93cd15d84700631f2ad4dc625eb926386eca 100644
--- a/build_files/build_environment/cmake/webp.cmake
+++ b/build_files/build_environment/cmake/webp.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # Note the utility apps may use png/tiff/gif system libraries, but the
 # library itself does not depend on them, so should give no problems.
diff --git a/build_files/build_environment/cmake/x264.cmake b/build_files/build_environment/cmake/x264.cmake
index 08d698cc3ad77d45498ccaeb3ab6749ce79e8b63..0165eb25d0a85ae3e316282de69af5a838b63b76 100644
--- a/build_files/build_environment/cmake/x264.cmake
+++ b/build_files/build_environment/cmake/x264.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WIN32)
   set(X264_EXTRA_ARGS --enable-win32thread --cross-prefix=${MINGW_HOST}- --host=${MINGW_HOST})
diff --git a/build_files/build_environment/cmake/xml2.cmake b/build_files/build_environment/cmake/xml2.cmake
index 390ed15fccfd332b89397eb1e15007facb2911ab..cd24fd836b0ba7d31dd1f847b5033108aee01263 100644
--- a/build_files/build_environment/cmake/xml2.cmake
+++ b/build_files/build_environment/cmake/xml2.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_xml2
   URL file://${PACKAGE_DIR}/${XML2_FILE}
diff --git a/build_files/build_environment/cmake/xr_openxr.cmake b/build_files/build_environment/cmake/xr_openxr.cmake
index f476eebe83e0e463130e254ef5fba252d1569d2c..2589e3fcbf75065661c063bcda891d69898b97da 100644
--- a/build_files/build_environment/cmake/xr_openxr.cmake
+++ b/build_files/build_environment/cmake/xr_openxr.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 
 # Keep flags in sync with install_deps.sh ones in compile_XR_OpenXR_SDK()
diff --git a/build_files/build_environment/cmake/xvidcore.cmake b/build_files/build_environment/cmake/xvidcore.cmake
index 434f647f204ae570ae61586b965669a80f558076..f64d00f4c4af48bd97c41f36747393fb381f0789 100644
--- a/build_files/build_environment/cmake/xvidcore.cmake
+++ b/build_files/build_environment/cmake/xvidcore.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WIN32)
   set(XVIDCORE_EXTRA_ARGS --host=${MINGW_HOST})
diff --git a/build_files/build_environment/cmake/yamlcpp.cmake b/build_files/build_environment/cmake/yamlcpp.cmake
index 72e0cb8eac114695d4d379c9eeafc8fa5d55d4cd..abf6387fe364a26b88e27ea885d20099cd34c261 100644
--- a/build_files/build_environment/cmake/yamlcpp.cmake
+++ b/build_files/build_environment/cmake/yamlcpp.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(YAMLCPP_EXTRA_ARGS
   -DYAML_CPP_BUILD_TESTS=OFF
diff --git a/build_files/build_environment/cmake/zlib.cmake b/build_files/build_environment/cmake/zlib.cmake
index 3aac5fc5334c47fc43ecdda9c2d01256648e333b..9adb1dcce75062cc4062e3b6641c048f92ccf037 100644
--- a/build_files/build_environment/cmake/zlib.cmake
+++ b/build_files/build_environment/cmake/zlib.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_zlib
   URL file://${PACKAGE_DIR}/${ZLIB_FILE}
diff --git a/build_files/build_environment/cmake/zlib_mingw.cmake b/build_files/build_environment/cmake/zlib_mingw.cmake
index 5f5408b7f6a2310be5cff5f4e1db627e470052b8..9858557e52b24638d54f77841412248a9c1d08d8 100644
--- a/build_files/build_environment/cmake/zlib_mingw.cmake
+++ b/build_files/build_environment/cmake/zlib_mingw.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ExternalProject_Add(external_zlib_mingw
   URL file://${PACKAGE_DIR}/${ZLIB_FILE}
diff --git a/build_files/build_environment/cmake/zstd.cmake b/build_files/build_environment/cmake/zstd.cmake
index 86cb2d016c64b12f108d82951e0233e0b45d1bb4..85db89db7d5a3d0e5f5f76b3319e2a78ed5930b0 100644
--- a/build_files/build_environment/cmake/zstd.cmake
+++ b/build_files/build_environment/cmake/zstd.cmake
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(ZSTD_EXTRA_ARGS
   -DZSTD_BUILD_PROGRAMS=OFF
diff --git a/build_files/build_environment/install_deps.sh b/build_files/build_environment/install_deps.sh
index 27f8d586c136b8f36e79d16ab4feb712e6fa8b33..bb41252440146520ebd8328938bea53ba0bef9e4 100755
--- a/build_files/build_environment/install_deps.sh
+++ b/build_files/build_environment/install_deps.sh
@@ -1,21 +1,5 @@
 #!/usr/bin/env bash
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # A shell script installing/building all needed dependencies to build Blender, for some Linux distributions.
 
diff --git a/build_files/cmake/clang_array_check.py b/build_files/cmake/clang_array_check.py
index a3a0ea63347a1cd886a3891ecff1972ce1f1fcac..b015c5c6e7ccf1bba48453567cc55c6c7a57c19e 100644
--- a/build_files/cmake/clang_array_check.py
+++ b/build_files/cmake/clang_array_check.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 """
 Invocation:
diff --git a/build_files/cmake/cmake_consistency_check.py b/build_files/cmake/cmake_consistency_check.py
index d3dc9ff55ba26051c2246d4b7af9ab8b6b8eef3d..001c776f87cbf8d1aa9c97d9e3d030ae19b342b9 100755
--- a/build_files/cmake/cmake_consistency_check.py
+++ b/build_files/cmake/cmake_consistency_check.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/build_files/cmake/cmake_netbeans_project.py b/build_files/cmake/cmake_netbeans_project.py
index 162fe1e2c06fa1904285d183c3a51a05ebdb7aa9..0a4c41bd189597345b9f39ffa3b5a13244893e0e 100755
--- a/build_files/cmake/cmake_netbeans_project.py
+++ b/build_files/cmake/cmake_netbeans_project.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/build_files/cmake/cmake_print_build_options.py b/build_files/cmake/cmake_print_build_options.py
index e41a1d2f8734e4b5a21f1abcd7d311c3bd666cd9..3dc2951680aae71bf26d8475a951012f514364e4 100644
--- a/build_files/cmake/cmake_print_build_options.py
+++ b/build_files/cmake/cmake_print_build_options.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 # Simple utility that prints all WITH_* options in a CMakeLists.txt
 # Called by 'make help_features'
diff --git a/build_files/cmake/cmake_qtcreator_project.py b/build_files/cmake/cmake_qtcreator_project.py
index f9c3c290dda8afae3db2fad0f1bff08c36167fa9..c0145564bd4540a3e5b68a3d8e2c2151d851da9b 100755
--- a/build_files/cmake/cmake_qtcreator_project.py
+++ b/build_files/cmake/cmake_qtcreator_project.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/build_files/cmake/cmake_static_check_clang_array.py b/build_files/cmake/cmake_static_check_clang_array.py
index 76aeb9e194eba87c3b44f66f1084ae814db94f99..3d98bfb0c62952e66022c81833f038baa141e635 100644
--- a/build_files/cmake/cmake_static_check_clang_array.py
+++ b/build_files/cmake/cmake_static_check_clang_array.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/build_files/cmake/cmake_static_check_cppcheck.py b/build_files/cmake/cmake_static_check_cppcheck.py
index 0e37b9ba468b761c9622a8248efc3e5ea223a4bb..91cac06679dc7365eba5bce93b25c004ae1ce5f5 100644
--- a/build_files/cmake/cmake_static_check_cppcheck.py
+++ b/build_files/cmake/cmake_static_check_cppcheck.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/build_files/cmake/cmake_static_check_smatch.py b/build_files/cmake/cmake_static_check_smatch.py
index 64d12c459afd0186f2a57a6ff8eddc4a50274067..36c1842e0e6b6bd1b94c1c8358fb91ea1165776c 100644
--- a/build_files/cmake/cmake_static_check_smatch.py
+++ b/build_files/cmake/cmake_static_check_smatch.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/build_files/cmake/cmake_static_check_sparse.py b/build_files/cmake/cmake_static_check_sparse.py
index 6419f247c568348979efa54977c47473b586d8f8..8d0358eaa1b71c138a2911593fc4b9f80439aff5 100644
--- a/build_files/cmake/cmake_static_check_sparse.py
+++ b/build_files/cmake/cmake_static_check_sparse.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/build_files/cmake/cmake_static_check_splint.py b/build_files/cmake/cmake_static_check_splint.py
index b917f29423a3c225e1c57ec424865643eeec9a19..c0317c719126ee9613063e98c8684c82c5664c2b 100644
--- a/build_files/cmake/cmake_static_check_splint.py
+++ b/build_files/cmake/cmake_static_check_splint.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/build_files/cmake/macros.cmake b/build_files/cmake/macros.cmake
index 94d5fe1e31b220ab6e062b88a7f4bc8154ce3954..bf3e56922c9ad6aa9a573639864e88693ae5fd6f 100644
--- a/build_files/cmake/macros.cmake
+++ b/build_files/cmake/macros.cmake
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 macro(list_insert_after
   list_id item_check item_add
diff --git a/build_files/cmake/platform/platform_apple.cmake b/build_files/cmake/platform/platform_apple.cmake
index 379370a989ac6ced076ab8c37baf6f95c7184dbe..b09f2f8917bbb580e75585e68fccf04652aeed81 100644
--- a/build_files/cmake/platform/platform_apple.cmake
+++ b/build_files/cmake/platform/platform_apple.cmake
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2016, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2016 Blender Foundation. All rights reserved.
 
 # Libraries configuration for Apple.
 
diff --git a/build_files/cmake/platform/platform_apple_xcode.cmake b/build_files/cmake/platform/platform_apple_xcode.cmake
index c9afd67df84f275deb20d847188e66c15af530a4..06890f1cee1a946046196f04e32492840d317df6 100644
--- a/build_files/cmake/platform/platform_apple_xcode.cmake
+++ b/build_files/cmake/platform/platform_apple_xcode.cmake
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2016, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2016 Blender Foundation. All rights reserved.
 
 # Xcode and system configuration for Apple.
 
diff --git a/build_files/cmake/platform/platform_unix.cmake b/build_files/cmake/platform/platform_unix.cmake
index 6a896709cc29a8bd5c9d6fd2cefe4bee6688f2f9..96c402760b7aa77fde8117dfdc31e2474f58824c 100644
--- a/build_files/cmake/platform/platform_unix.cmake
+++ b/build_files/cmake/platform/platform_unix.cmake
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2016, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2016 Blender Foundation. All rights reserved.
 
 # Libraries configuration for any *nix system including Linux and Unix (excluding APPLE).
 
diff --git a/build_files/cmake/platform/platform_win32.cmake b/build_files/cmake/platform/platform_win32.cmake
index 220b67bc1e36a9b862f890fd3fe0588758993daf..e2e49ca0bcd4f6ad684e2edafc8ed02890a64192 100644
--- a/build_files/cmake/platform/platform_win32.cmake
+++ b/build_files/cmake/platform/platform_win32.cmake
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2016, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2016 Blender Foundation. All rights reserved.
 
 # Libraries configuration for Windows.
 
diff --git a/build_files/cmake/project_info.py b/build_files/cmake/project_info.py
index 13b07f490792656f7e9bb1bb4dc44dea2f6e076c..f12086c032533ff98b0446070ad5579b551252d5 100755
--- a/build_files/cmake/project_info.py
+++ b/build_files/cmake/project_info.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/build_files/cmake/project_source_info.py b/build_files/cmake/project_source_info.py
index c2ba7e5b11c4a70cd7e8c8c14fdd9d85e6a86da0..1479d62e6c55a2e13cacb3f314583c82812484b8 100644
--- a/build_files/cmake/project_source_info.py
+++ b/build_files/cmake/project_source_info.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/doc/blender_file_format/BlendFileDnaExporter_25.py b/doc/blender_file_format/BlendFileDnaExporter_25.py
index 21260ea7ebc1d74c93cb29b439c9e4243c913123..2c99c2ec0a293e09a3ab5e2f791aae030a9888cb 100755
--- a/doc/blender_file_format/BlendFileDnaExporter_25.py
+++ b/doc/blender_file_format/BlendFileDnaExporter_25.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENCE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ######################################################
 #
diff --git a/doc/blender_file_format/BlendFileReader.py b/doc/blender_file_format/BlendFileReader.py
index 1e66fc55ab0356d3cb662b00f9b5d016f7840550..18b98c897087bc5c5bd676d9d17167dd31971b84 100644
--- a/doc/blender_file_format/BlendFileReader.py
+++ b/doc/blender_file_format/BlendFileReader.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENCE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 ######################################################
 # Importing modules
diff --git a/doc/license/SPDX-license-identifiers.txt b/doc/license/SPDX-license-identifiers.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0c7ea7ba4edd806fc2506af4dd761d338e27081e
--- /dev/null
+++ b/doc/license/SPDX-license-identifiers.txt
@@ -0,0 +1,5 @@
+Corresponding SPDX license identifiers in the source code:
+
+Apache-2.0                Apache-2-license.txt      https://spdx.org/licenses/Apache-2.0.html
+BSD-3-Clause              BSD-3-Clause-license.txt  https://spdx.org/licenses/BSD-3-Clause.html
+GPL-2.0-or-later          GPL-license.txt           https://spdx.org/licenses/GPL-2.0-or-later.html
diff --git a/doc/manpage/blender.1.py b/doc/manpage/blender.1.py
index 5e7226d7d4cb8623a0a58392fc864b56acf6f482..4a853500a6221b36240b647c0ccb913152dd88fa 100755
--- a/doc/manpage/blender.1.py
+++ b/doc/manpage/blender.1.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 '''
 This script generates the blender.1 man page, embedding the help text
diff --git a/doc/python_api/rst_from_bmesh_opdefines.py b/doc/python_api/rst_from_bmesh_opdefines.py
index 83cd5be9344a75bf54169c7a4f6599b5b1635a2d..c97b05b96b3a66b6c03517bf2477e74b5eb55a80 100644
--- a/doc/python_api/rst_from_bmesh_opdefines.py
+++ b/doc/python_api/rst_from_bmesh_opdefines.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/doc/python_api/sphinx_changelog_gen.py b/doc/python_api/sphinx_changelog_gen.py
index dc54de826ba9bc04f42bb25f01ee50375d50c003..6c06178d6032381432c3ce80e8ad79bc1b87f070 100644
--- a/doc/python_api/sphinx_changelog_gen.py
+++ b/doc/python_api/sphinx_changelog_gen.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/doc/python_api/sphinx_doc_gen.py b/doc/python_api/sphinx_doc_gen.py
index f8ccb10a84487e7fff1e0438b1cf1d085493ed09..b427fedebc1ee8c5284a02754e00a4321187a695 100644
--- a/doc/python_api/sphinx_doc_gen.py
+++ b/doc/python_api/sphinx_doc_gen.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/doc/python_api/sphinx_doc_gen_monkeypatch.py b/doc/python_api/sphinx_doc_gen_monkeypatch.py
index 26e19782297870e3cd907b2567f3185c72613fd8..09911e9b8a120fd8f0393a0b2f8a333fb6172346 100644
--- a/doc/python_api/sphinx_doc_gen_monkeypatch.py
+++ b/doc/python_api/sphinx_doc_gen_monkeypatch.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/extern/CMakeLists.txt b/extern/CMakeLists.txt
index be76e8b0db127cf433554a7bf636ae6433da775a..35da67d05a45125f2a8af37fd0595df9467f7d2c 100644
--- a/extern/CMakeLists.txt
+++ b/extern/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 # Libs that adhere to strict flags
 add_subdirectory(curve_fit_nd)
diff --git a/extern/binreloc/CMakeLists.txt b/extern/binreloc/CMakeLists.txt
index 4dfe960c571e337a173951bd7ae0d3b3a446b39e..b89eac87303ab7ca51f2bc15c6a154bb614bd198 100644
--- a/extern/binreloc/CMakeLists.txt
+++ b/extern/binreloc/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2008 by The Blender Foundation
-# All rights reserved.
-#
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2008 Blender Foundation. All rights reserved.
 
 set(INC
   include
diff --git a/extern/bullet2/CMakeLists.txt b/extern/bullet2/CMakeLists.txt
index 6138795f241a0e451d1bbf80ec6d76254af68e38..f8b3e8abbc8b10608208f379574d1e4a2e431cfc 100644
--- a/extern/bullet2/CMakeLists.txt
+++ b/extern/bullet2/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 # avoid noisy warnings
 if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
diff --git a/extern/ceres/CMakeLists.txt b/extern/ceres/CMakeLists.txt
index 51cf965731980817341e47cda6851b93fe3fbfdf..1d8a611b107f02b7746fb49675f0004cf253dad8 100644
--- a/extern/ceres/CMakeLists.txt
+++ b/extern/ceres/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2012, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2012 Blender Foundation. All rights reserved.
 
 # NOTE: This file is automatically generated by bundle.sh script
 #       If you're doing changes in this file, please update template
diff --git a/extern/clew/CMakeLists.txt b/extern/clew/CMakeLists.txt
index cffbf4e855fd614fd8a016810ec0fb4f0d75d71f..297d953185367430e5932115bba6fc6e0ce99764 100644
--- a/extern/clew/CMakeLists.txt
+++ b/extern/clew/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/extern/cuew/CMakeLists.txt b/extern/cuew/CMakeLists.txt
index de54d9642ce94f18f08fd7c73cb095ef81e97f9c..5ff31ec924f2661fcf4f2bb6334cfa58b89257c1 100644
--- a/extern/cuew/CMakeLists.txt
+++ b/extern/cuew/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/extern/curve_fit_nd/CMakeLists.txt b/extern/curve_fit_nd/CMakeLists.txt
index 11b16c8fa8a07030f4600fe92d1da316edf2e9c0..401e1f40cac7a0d5ce01b9ab5edb5d3b95e3615c 100644
--- a/extern/curve_fit_nd/CMakeLists.txt
+++ b/extern/curve_fit_nd/CMakeLists.txt
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/extern/draco/CMakeLists.txt b/extern/draco/CMakeLists.txt
index d4cfeea4bee7d72182a781341c2ad605bd519e5b..09bc6efd29f0f7559f49305b70091398589ed0da 100644
--- a/extern/draco/CMakeLists.txt
+++ b/extern/draco/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2019, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2019 Blender Foundation. All rights reserved.
 
 # Build Draco library.
 add_subdirectory(draco)
diff --git a/extern/gflags/CMakeLists.txt b/extern/gflags/CMakeLists.txt
index 9179ad7fed0bef8d151f5c73325cf07ff97f34b4..82455c52e55d6e57a7dda5a6649f701d89c17034 100644
--- a/extern/gflags/CMakeLists.txt
+++ b/extern/gflags/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2016, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2016 Blender Foundation. All rights reserved.
 
 set(INC
   src
diff --git a/extern/glew-es/CMakeLists.txt b/extern/glew-es/CMakeLists.txt
index deb73b30455a00cc6d0b976709c32faedd8b25c0..1e334f9995bd3bf7eb0daad68fae951208c701ea 100644
--- a/extern/glew-es/CMakeLists.txt
+++ b/extern/glew-es/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2013, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2013 Blender Foundation. All rights reserved.
 
 set(INC
   include
diff --git a/extern/glew/CMakeLists.txt b/extern/glew/CMakeLists.txt
index 59f13eb73c765aea17084a56df6a4615b39d268e..bd35fa815384b816b97aebb465df295e3775f019 100644
--- a/extern/glew/CMakeLists.txt
+++ b/extern/glew/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 # avoid noisy warnings
 if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
diff --git a/extern/glog/CMakeLists.txt b/extern/glog/CMakeLists.txt
index 2a9736425a8f7edbb320f059b7b4e1c316e8627d..f25c72d830e62357d7958e8f818df8f546cf9da1 100644
--- a/extern/glog/CMakeLists.txt
+++ b/extern/glog/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2016, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2016 Blender Foundation. All rights reserved.
 
 set(INC
   src
diff --git a/extern/gmock/CMakeLists.txt b/extern/gmock/CMakeLists.txt
index faa133265d3c64501ca4d074db708acb9f96e067..2a2e21f515b327d299b03da69f8b8f0c34d757a7 100644
--- a/extern/gmock/CMakeLists.txt
+++ b/extern/gmock/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2014, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2014 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/extern/gtest/CMakeLists.txt b/extern/gtest/CMakeLists.txt
index 42a1cd6fbc77b173a55397122bf12d5c42f4cc33..363f951a1f0c2c1949cad0c8245364dc75291166 100644
--- a/extern/gtest/CMakeLists.txt
+++ b/extern/gtest/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2014, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2014 Blender Foundation. All rights reserved.
 
 # avoid noisy warnings
 if(CMAKE_COMPILER_IS_GNUCC)
diff --git a/extern/hipew/CMakeLists.txt b/extern/hipew/CMakeLists.txt
index d215ea8c69140fe32b4d2d884cdec303cd4f268c..abcd74a3efb70b4b0c8681d1dc3747d301c8c320 100644
--- a/extern/hipew/CMakeLists.txt
+++ b/extern/hipew/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2021, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2021 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/extern/lzma/CMakeLists.txt b/extern/lzma/CMakeLists.txt
index d76b418fd7483baa60af2ab2db3f7e1e085792a0..67b527d2217b2273b993c0f8871013459f7306f9 100644
--- a/extern/lzma/CMakeLists.txt
+++ b/extern/lzma/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 # avoid noisy warnings
 if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
diff --git a/extern/lzo/CMakeLists.txt b/extern/lzo/CMakeLists.txt
index 630918dc92c964b360a10f38c9a6aae0c7c6b6be..0cea8169d06fde5431ea428e6e569cf70f7d9c53 100644
--- a/extern/lzo/CMakeLists.txt
+++ b/extern/lzo/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 remove_strict_flags()
 
diff --git a/extern/mantaflow/CMakeLists.txt b/extern/mantaflow/CMakeLists.txt
index 9b047eb1a3eeb98480a34f5c0047ee58ae26c9bd..c9e2b54ef18d84a1bfb3b703f838e9bf9546a441 100644
--- a/extern/mantaflow/CMakeLists.txt
+++ b/extern/mantaflow/CMakeLists.txt
@@ -1,27 +1,7 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2016, Blender Foundation
-# All rights reserved.
-#
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2016 Blender Foundation. All rights reserved.
 # The Original Code is: all of this file.
-#
-# Contributor(s): Sebastian Barschkis (sebbas)
-#
-# ***** END GPL LICENSE BLOCK *****
+# Contributor(s): Sebastian Barschkis (sebbas).
 
 # Mantaflow triggers a clang-cl compiler error with versions before 9.0.1
 # Since mantaflow does not appear to be using OpenMP at this point in time,
diff --git a/extern/quadriflow/CMakeLists.txt b/extern/quadriflow/CMakeLists.txt
index 1ab2322f73b55d693699f0855642dcb92749dda7..bc4d624afa96ce0253983b88a8df72dae4d4dbba 100644
--- a/extern/quadriflow/CMakeLists.txt
+++ b/extern/quadriflow/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2019, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2019 Blender Foundation. All rights reserved.
 
 # avoid noisy warnings
 if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
diff --git a/extern/rangetree/CMakeLists.txt b/extern/rangetree/CMakeLists.txt
index b5c209d5aa323cf78e3603a8285b684caa8c8d0a..559bedea2e56748ed61239750e6a8aedbad44fb2 100644
--- a/extern/rangetree/CMakeLists.txt
+++ b/extern/rangetree/CMakeLists.txt
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/extern/sdlew/CMakeLists.txt b/extern/sdlew/CMakeLists.txt
index 29bae5e47820851c4980155c787f942bd1f9d8bb..7f8300909a79849e638eea933927cd1fea695a94 100644
--- a/extern/sdlew/CMakeLists.txt
+++ b/extern/sdlew/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/extern/smaa_areatex/CMakeLists.txt b/extern/smaa_areatex/CMakeLists.txt
index 2386b0e7b79212859d48d571d38a225c69a95814..cee7ddedef7584c6171516f0b58f079397433d24 100644
--- a/extern/smaa_areatex/CMakeLists.txt
+++ b/extern/smaa_areatex/CMakeLists.txt
@@ -1,26 +1,6 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2017, Blender Foundation
-# All rights reserved.
-#
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2017 Blender Foundation. All rights reserved.
 # The Original Code is: all of this file.
-#
-# Contributor(s): IRIE Shinsuke
-#
-# ***** END GPL LICENSE BLOCK *****
+# Contributor(s): IRIE Shinsuke.
 
 add_executable(smaa_areatex smaa_areatex.cpp)
diff --git a/extern/wcwidth/CMakeLists.txt b/extern/wcwidth/CMakeLists.txt
index 805655de26a8ce634830a15bb62801a027dac90d..126eeeb2006a0287740183fcf8ecad1b32090191 100644
--- a/extern/wcwidth/CMakeLists.txt
+++ b/extern/wcwidth/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2013, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2013 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/extern/xdnd/CMakeLists.txt b/extern/xdnd/CMakeLists.txt
index 3da6f72862084a571a59cbe86541bbf2d92bcd4b..4f431257093e437cb95c1eaab900b097d796a1da 100644
--- a/extern/xdnd/CMakeLists.txt
+++ b/extern/xdnd/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2012, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2012 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/CMakeLists.txt b/intern/CMakeLists.txt
index 0a61cef7cc84c62ff9edef3dec917efe9969a866..2ff2fb398061c7bbbfd89b12d8b59192ac00bb5a 100644
--- a/intern/CMakeLists.txt
+++ b/intern/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 # add_subdirectory(atomic)  # header only
 add_subdirectory(atomic)
diff --git a/intern/atomic/CMakeLists.txt b/intern/atomic/CMakeLists.txt
index afcafc4c8ab993590f610e4b0e609f56a4bd9b38..772966cdd54d57868ba6d2d55185235fe23e8245 100644
--- a/intern/atomic/CMakeLists.txt
+++ b/intern/atomic/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2020, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2020 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/clog/CLG_log.h b/intern/clog/CLG_log.h
index 3664ade2981262502759ad47c4474c61d687057d..c01c361d1754b74ca39f958c5307209000ec66da 100644
--- a/intern/clog/CLG_log.h
+++ b/intern/clog/CLG_log.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_clog
diff --git a/intern/clog/CMakeLists.txt b/intern/clog/CMakeLists.txt
index 41009642e3f391d93093139c0a3bc7f9d455d6cd..5f0ae3efbe4d31497c613fa74e11dcbafa84efa1 100644
--- a/intern/clog/CMakeLists.txt
+++ b/intern/clog/CMakeLists.txt
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/intern/clog/clog.c b/intern/clog/clog.c
index 88cc0fbc4cbd419af4f60bb1e4831e55cfd42138..7e9a36c2b14158099f576bd446d891af1e68a7b2 100644
--- a/intern/clog/clog.c
+++ b/intern/clog/clog.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_clog
diff --git a/intern/cycles/CMakeLists.txt b/intern/cycles/CMakeLists.txt
index 8854170c64243500883ab202d3ee63fbece7a6f2..6fe0773b360a62fa7723dd7245658910a87a1679 100644
--- a/intern/cycles/CMakeLists.txt
+++ b/intern/cycles/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 # Standalone or with Blender
 if(NOT WITH_BLENDER AND WITH_CYCLES_STANDALONE)
diff --git a/intern/cycles/app/CMakeLists.txt b/intern/cycles/app/CMakeLists.txt
index 781639986f6a0278249f6e19c69a14c3bdbe44ca..ad2df29bc11bae63cb9bf48133cdb38c25b81e88 100644
--- a/intern/cycles/app/CMakeLists.txt
+++ b/intern/cycles/app/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 #####################################################################
 # Cycles standalone executable
diff --git a/intern/cycles/blender/CMakeLists.txt b/intern/cycles/blender/CMakeLists.txt
index 1c6016261f0cafb25f1a06f4b4827c269c3e80a9..3de0a55b8b2f249106b4e5143e7b5fc9532cd080 100644
--- a/intern/cycles/blender/CMakeLists.txt
+++ b/intern/cycles/blender/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 set(INC
   ..
diff --git a/intern/cycles/bvh/CMakeLists.txt b/intern/cycles/bvh/CMakeLists.txt
index b5c80f78f09d6187532a96cdfc68e63900ca5f9e..f2ef35d3609c653dd43173ce35c094102089beca 100644
--- a/intern/cycles/bvh/CMakeLists.txt
+++ b/intern/cycles/bvh/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 set(INC
   ..
diff --git a/intern/cycles/cmake/external_libs.cmake b/intern/cycles/cmake/external_libs.cmake
index 8d9631e5b446276cb39468df94a4103a9f0915f0..8df065895538906ae21bdb3def23e8ec0ed5a5aa 100644
--- a/intern/cycles/cmake/external_libs.cmake
+++ b/intern/cycles/cmake/external_libs.cmake
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 
 ###########################################################################
diff --git a/intern/cycles/cmake/macros.cmake b/intern/cycles/cmake/macros.cmake
index 5619f7bab72d44eaa32a412200ae2006eee7c256..5c2bbdd6a440b427562f9f4bdb5b31b5c67aede2 100644
--- a/intern/cycles/cmake/macros.cmake
+++ b/intern/cycles/cmake/macros.cmake
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 function(cycles_set_solution_folder target)
   if(IDE_GROUP_PROJECTS_IN_FOLDERS)
diff --git a/intern/cycles/device/CMakeLists.txt b/intern/cycles/device/CMakeLists.txt
index 7f1e9ff3d0f6905cd6a7a537419e697169bef171..3ad8eee451a0b4d652dde72513ac93efe2a86495 100644
--- a/intern/cycles/device/CMakeLists.txt
+++ b/intern/cycles/device/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 set(INC
   ..
diff --git a/intern/cycles/doc/CMakeLists.txt b/intern/cycles/doc/CMakeLists.txt
index 26a66ec0d820acc0dfa47ad3a92cd7d1b1cf542a..4d44248e98b855414bf9f4d507f11d9b6d352396 100644
--- a/intern/cycles/doc/CMakeLists.txt
+++ b/intern/cycles/doc/CMakeLists.txt
@@ -1,15 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 add_subdirectory(license)
diff --git a/intern/cycles/doc/license/CMakeLists.txt b/intern/cycles/doc/license/CMakeLists.txt
index f861846b574fff1bd9b7b18be07cfb6a1b9eea4b..a39c901132504462e36afa7076809e495c70bdb3 100644
--- a/intern/cycles/doc/license/CMakeLists.txt
+++ b/intern/cycles/doc/license/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 set(LICENSES
   Apache_2.0.txt
diff --git a/intern/cycles/graph/CMakeLists.txt b/intern/cycles/graph/CMakeLists.txt
index 790d29e99734c72672fa26a4dbf8b7f222738650..9ad1be09046e1b02fb66d5cc3a573d2dfdc0f6d7 100644
--- a/intern/cycles/graph/CMakeLists.txt
+++ b/intern/cycles/graph/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 set(INC
   ..
diff --git a/intern/cycles/integrator/CMakeLists.txt b/intern/cycles/integrator/CMakeLists.txt
index dedde513409869430254bb959d72e774fa727b6e..fb313acafc145bcf67e698ac24a076d0271a4fc1 100644
--- a/intern/cycles/integrator/CMakeLists.txt
+++ b/intern/cycles/integrator/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2021 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 set(INC
   ..
diff --git a/intern/cycles/kernel/CMakeLists.txt b/intern/cycles/kernel/CMakeLists.txt
index 51158b86c5af5a816fbdd7e865e2beb3eaa8773c..b01c4671dc35657bcc56a552721c73e132329346 100644
--- a/intern/cycles/kernel/CMakeLists.txt
+++ b/intern/cycles/kernel/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 remove_extra_strict_flags()
 
diff --git a/intern/cycles/kernel/osl/CMakeLists.txt b/intern/cycles/kernel/osl/CMakeLists.txt
index 90e16bd70d4b907291088826a6e85c392dcfe986..1c2ae0cf1cda318166949da1f15639d07a475df5 100644
--- a/intern/cycles/kernel/osl/CMakeLists.txt
+++ b/intern/cycles/kernel/osl/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 set(INC
   ../..
diff --git a/intern/cycles/kernel/osl/shaders/CMakeLists.txt b/intern/cycles/kernel/osl/shaders/CMakeLists.txt
index 16a9b1cc012163610080c46538b41c7d910dcc47..16cf6d9f41320f258b53b0b46b3211b25f539f76 100644
--- a/intern/cycles/kernel/osl/shaders/CMakeLists.txt
+++ b/intern/cycles/kernel/osl/shaders/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 # OSL node shaders
 
diff --git a/intern/cycles/scene/CMakeLists.txt b/intern/cycles/scene/CMakeLists.txt
index 6f8b97a4998969de93ab8457211a93ff5ef74ae1..ddb7ff6f9061fe29e8fbe4d27cac767a33a956e4 100644
--- a/intern/cycles/scene/CMakeLists.txt
+++ b/intern/cycles/scene/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2021 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 set(INC
   ..
diff --git a/intern/cycles/session/CMakeLists.txt b/intern/cycles/session/CMakeLists.txt
index f441def128ed3d8e1e247223b2422cea05ce5f9f..bf11d0d79dfaf50af4bd2009cb44bbb3e90545cb 100644
--- a/intern/cycles/session/CMakeLists.txt
+++ b/intern/cycles/session/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2021 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 set(INC
   ..
diff --git a/intern/cycles/subd/CMakeLists.txt b/intern/cycles/subd/CMakeLists.txt
index 4bf5503dc4b9efa39c5f281f0b9da02cfacd0af7..2037189eacafa10c38737355a7c22ea7f0d3020f 100644
--- a/intern/cycles/subd/CMakeLists.txt
+++ b/intern/cycles/subd/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 set(INC
   ..
diff --git a/intern/cycles/test/CMakeLists.txt b/intern/cycles/test/CMakeLists.txt
index c6c992008a0f3b844cfb8787b3a19562b5096a49..b2c67b3635c20c7e4142bd127d51fe80266f64d5 100644
--- a/intern/cycles/test/CMakeLists.txt
+++ b/intern/cycles/test/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 if(WITH_GTESTS)
   Include(GTestTesting)
diff --git a/intern/cycles/util/CMakeLists.txt b/intern/cycles/util/CMakeLists.txt
index a26934c0ace0fc79e978e47230e9e19687ec9257..e65ce60ee89514f57bf5a3d2f6a2982f4335286c 100644
--- a/intern/cycles/util/CMakeLists.txt
+++ b/intern/cycles/util/CMakeLists.txt
@@ -1,16 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2011-2020 Blender Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
 set(INC
   ..
diff --git a/intern/dualcon/CMakeLists.txt b/intern/dualcon/CMakeLists.txt
index 9a0be94fc75e8560051a80a5a34e2bd040be4ae9..9904ceeb3f721e7ca960df1835741536b172557e 100644
--- a/intern/dualcon/CMakeLists.txt
+++ b/intern/dualcon/CMakeLists.txt
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/intern/dualcon/dualcon.h b/intern/dualcon/dualcon.h
index 60cec10154554d11437aa44caf90fb21988a080c..79f9cade1cfd2904983b7b12167936d469d66b7d 100644
--- a/intern/dualcon/dualcon.h
+++ b/intern/dualcon/dualcon.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifndef __DUALCON_H__
 #define __DUALCON_H__
diff --git a/intern/dualcon/intern/GeoCommon.h b/intern/dualcon/intern/GeoCommon.h
index 421e2c5e65e78dd2cebae214170977fe7a7680e4..70dd52a6870921455cb482be57f5b77f67976ba3 100644
--- a/intern/dualcon/intern/GeoCommon.h
+++ b/intern/dualcon/intern/GeoCommon.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifndef __GEOCOMMON_H__
 #define __GEOCOMMON_H__
diff --git a/intern/dualcon/intern/MemoryAllocator.h b/intern/dualcon/intern/MemoryAllocator.h
index 6ad4ceb5773fb681292466a610db2321bad5894c..9900e3f5828e41a82b392c7b868f2b33e95246fb 100644
--- a/intern/dualcon/intern/MemoryAllocator.h
+++ b/intern/dualcon/intern/MemoryAllocator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifndef __MEMORYALLOCATOR_H__
 #define __MEMORYALLOCATOR_H__
diff --git a/intern/dualcon/intern/ModelReader.h b/intern/dualcon/intern/ModelReader.h
index d1f42466cfe3ffe1eadb8c20d87c4d9707d7d4bf..2adb21543457a0ecea3a3c3e7f66f28b4c2c67bd 100644
--- a/intern/dualcon/intern/ModelReader.h
+++ b/intern/dualcon/intern/ModelReader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifndef __MODELREADER_H__
 #define __MODELREADER_H__
diff --git a/intern/dualcon/intern/Projections.cpp b/intern/dualcon/intern/Projections.cpp
index 3bf7f8f1de213fbf2d26851c4e523b0b89aacb67..800f790430c6f0507d773f01a9855a9b16dd1f14 100644
--- a/intern/dualcon/intern/Projections.cpp
+++ b/intern/dualcon/intern/Projections.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifdef WITH_CXX_GUARDEDALLOC
 #  include "MEM_guardedalloc.h"
diff --git a/intern/dualcon/intern/Projections.h b/intern/dualcon/intern/Projections.h
index dcd5de7dff00258a058188e09f73dcf6af7511c9..1a92e9e4b7cca7a39e88fa3ae6c27f5ac8eced79 100644
--- a/intern/dualcon/intern/Projections.h
+++ b/intern/dualcon/intern/Projections.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifndef __PROJECTIONS_H__
 #define __PROJECTIONS_H__
diff --git a/intern/dualcon/intern/Queue.h b/intern/dualcon/intern/Queue.h
index 2620ab6cb323833921ab14dbe038b80eeff6453f..d49527851f548c83b39900894da47dea7814f371 100644
--- a/intern/dualcon/intern/Queue.h
+++ b/intern/dualcon/intern/Queue.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifndef __QUEUE_H__
 #define __QUEUE_H__
diff --git a/intern/dualcon/intern/cubes.h b/intern/dualcon/intern/cubes.h
index 3561ce008c27c76603ded4aec9faa3ec23629ac3..19d08a5ce99c6ee69e293e527e0f593518baa710 100644
--- a/intern/dualcon/intern/cubes.h
+++ b/intern/dualcon/intern/cubes.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifndef __CUBES_H__
 #define __CUBES_H__
diff --git a/intern/dualcon/intern/dualcon_c_api.cpp b/intern/dualcon/intern/dualcon_c_api.cpp
index d6d9dc4e76f7495b83b944ad8f103358d00c554d..5cfafdd1917a94108ff6cb57aa445f30b9bd85f7 100644
--- a/intern/dualcon/intern/dualcon_c_api.cpp
+++ b/intern/dualcon/intern/dualcon_c_api.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "ModelReader.h"
 #include "dualcon.h"
diff --git a/intern/dualcon/intern/manifold_table.cpp b/intern/dualcon/intern/manifold_table.cpp
index d08e1fd27c01c810b1d1d69033d052842f6aa649..001d2cdd1c955b5d9eef7594f7487e5e44daa50f 100644
--- a/intern/dualcon/intern/manifold_table.cpp
+++ b/intern/dualcon/intern/manifold_table.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "manifold_table.h"
 
diff --git a/intern/dualcon/intern/manifold_table.h b/intern/dualcon/intern/manifold_table.h
index 4f15afefa757a8d2ce8158f1843f664faeb2bc4b..88405201235a1ae8adb67fad6b37d008efcce5aa 100644
--- a/intern/dualcon/intern/manifold_table.h
+++ b/intern/dualcon/intern/manifold_table.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifndef __MANIFOLD_TABLE_H__
 #define __MANIFOLD_TABLE_H__
diff --git a/intern/dualcon/intern/marching_cubes_table.cpp b/intern/dualcon/intern/marching_cubes_table.cpp
index 5270be2503307b6325d9fef77cf98c812d9f11cf..e52c50cb007f0d88758c014eb79b5fa47f42466f 100644
--- a/intern/dualcon/intern/marching_cubes_table.cpp
+++ b/intern/dualcon/intern/marching_cubes_table.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "marching_cubes_table.h"
 
diff --git a/intern/dualcon/intern/marching_cubes_table.h b/intern/dualcon/intern/marching_cubes_table.h
index d91006bfafb68a1d736ef95663e91d4cfa066da0..183c01b932729b6c03b07771045a07ec279f07a9 100644
--- a/intern/dualcon/intern/marching_cubes_table.h
+++ b/intern/dualcon/intern/marching_cubes_table.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifndef __MARCHING_CUBES_TABLE_H__
 #define __MARCHING_CUBES_TABLE_H__
diff --git a/intern/dualcon/intern/octree.cpp b/intern/dualcon/intern/octree.cpp
index 94ab3085b5c00ba5010ccf9597e0195c6c236bb3..9e360848e6b34145d42118ae150eeea2f9c809aa 100644
--- a/intern/dualcon/intern/octree.cpp
+++ b/intern/dualcon/intern/octree.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifdef WITH_CXX_GUARDEDALLOC
 #  include "MEM_guardedalloc.h"
diff --git a/intern/dualcon/intern/octree.h b/intern/dualcon/intern/octree.h
index f6527d27e2385565257aaca5998d8a72b8b6cf87..a01444da47a2172f26b99344bf20d6ba7b126606 100644
--- a/intern/dualcon/intern/octree.h
+++ b/intern/dualcon/intern/octree.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifndef __OCTREE_H__
 #define __OCTREE_H__
diff --git a/intern/eigen/CMakeLists.txt b/intern/eigen/CMakeLists.txt
index f5ccb6efb67787ff255ba074342605cd13506088..1f5aff55f7b836c252ae01e30e90969945af4872 100644
--- a/intern/eigen/CMakeLists.txt
+++ b/intern/eigen/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2015, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2015 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/eigen/eigen_capi.h b/intern/eigen/eigen_capi.h
index 4f8ecd03a42d76c9886bafb10c1247a0dba78a2d..53dada2ca5c7b2ab53b9c3f849ba2f9aaadacb77 100644
--- a/intern/eigen/eigen_capi.h
+++ b/intern/eigen/eigen_capi.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_eigen
diff --git a/intern/eigen/intern/eigenvalues.cc b/intern/eigen/intern/eigenvalues.cc
index 8a48ae5f17ad549a2f62d41c87cb430ab2c2798f..3b51446a37854e6667d13b4f8aeb093fbf7dc970 100644
--- a/intern/eigen/intern/eigenvalues.cc
+++ b/intern/eigen/intern/eigenvalues.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 #ifndef __EIGEN3_EIGENVALUES_C_API_CC__
 #define __EIGEN3_EIGENVALUES_C_API_CC__
diff --git a/intern/eigen/intern/eigenvalues.h b/intern/eigen/intern/eigenvalues.h
index 0f61d6ee3e83bee5e66c83ab601e75438742815b..11f98b5933fe9553d338eea1289aeba24ed116e1 100644
--- a/intern/eigen/intern/eigenvalues.h
+++ b/intern/eigen/intern/eigenvalues.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_eigen
diff --git a/intern/eigen/intern/matrix.cc b/intern/eigen/intern/matrix.cc
index cff0e9cf264a335fe89ae8768869e64d2fc19c6a..8ca52a444a057f86ae18d3b5f1186d8c54cf87d9 100644
--- a/intern/eigen/intern/matrix.cc
+++ b/intern/eigen/intern/matrix.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_eigen
diff --git a/intern/eigen/intern/matrix.h b/intern/eigen/intern/matrix.h
index 1f94e1cbe1505cc0758e18d01ec13e2c884aff76..654b3a7d8140e085451f87b1e98c0d279ca735db 100644
--- a/intern/eigen/intern/matrix.h
+++ b/intern/eigen/intern/matrix.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_eigen
diff --git a/intern/eigen/intern/svd.cc b/intern/eigen/intern/svd.cc
index 24aa44f47400b7cdb7b66e78ed9fc49baa034c41..c036ac6ebf81723790bf74e9a5e4f4663fcf8ef1 100644
--- a/intern/eigen/intern/svd.cc
+++ b/intern/eigen/intern/svd.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_eigen
diff --git a/intern/eigen/intern/svd.h b/intern/eigen/intern/svd.h
index 3d80137dc566325d1d0db9aefc0b4a4de1f55f3b..603b4d183f824963ce883a97ae34b837ffbceb80 100644
--- a/intern/eigen/intern/svd.h
+++ b/intern/eigen/intern/svd.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_eigen
diff --git a/intern/ffmpeg/CMakeLists.txt b/intern/ffmpeg/CMakeLists.txt
index 64a26230e33bd09492a41163d6f4c3588aa83532..0de8496f3f35d892d4684cc1c4b0817c39e18c37 100644
--- a/intern/ffmpeg/CMakeLists.txt
+++ b/intern/ffmpeg/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2020, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2020 Blender Foundation. All rights reserved.
 
 if(WITH_GTESTS)
   set(TEST_SRC
diff --git a/intern/ghost/CMakeLists.txt b/intern/ghost/CMakeLists.txt
index 34d1ab1150ec080ab403c10226ae657745cbdd5f..9421edecf12ebb764cdf6d80be61dc5b70a95ee5 100644
--- a/intern/ghost/CMakeLists.txt
+++ b/intern/ghost/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/ghost/GHOST_C-api.h b/intern/ghost/GHOST_C-api.h
index 38adf81f8778d376a6734cb0f06285288afe2380..441c7315f1a8fce420f3b697439586f20224d09c 100644
--- a/intern/ghost/GHOST_C-api.h
+++ b/intern/ghost/GHOST_C-api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 /** \file
  * \ingroup GHOST
  * \brief GHOST C-API function and type declarations.
diff --git a/intern/ghost/GHOST_IContext.h b/intern/ghost/GHOST_IContext.h
index 1b5f996cb5490fedab6f22c7b556f195cc78f285..3d4a034f7f3e9ddb7565a721d05598d111e73d10 100644
--- a/intern/ghost/GHOST_IContext.h
+++ b/intern/ghost/GHOST_IContext.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/GHOST_IEvent.h b/intern/ghost/GHOST_IEvent.h
index 239eea2108866e7cb5a2146b94a532993147bf11..89e3c1405749ce3a68d8c82e26882c1985c0b7db 100644
--- a/intern/ghost/GHOST_IEvent.h
+++ b/intern/ghost/GHOST_IEvent.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/GHOST_IEventConsumer.h b/intern/ghost/GHOST_IEventConsumer.h
index 9096c70904b4d753229d58bb9ff2d55837436de0..e1d35c23a25ed19cda85689790aa50c426f782d8 100644
--- a/intern/ghost/GHOST_IEventConsumer.h
+++ b/intern/ghost/GHOST_IEventConsumer.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/GHOST_ISystem.h b/intern/ghost/GHOST_ISystem.h
index 3edc7605d4126f3e91b697e30a0f30bccc6de5d7..837ec25d0f83e15530c4f636c3df998b622a90c5 100644
--- a/intern/ghost/GHOST_ISystem.h
+++ b/intern/ghost/GHOST_ISystem.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/GHOST_ISystemPaths.h b/intern/ghost/GHOST_ISystemPaths.h
index 8298f4b78e2675d26ade2639a756e35ca31879eb..f8d93ef8e7310f3fa483cb3b2ab3460dff54cc6c 100644
--- a/intern/ghost/GHOST_ISystemPaths.h
+++ b/intern/ghost/GHOST_ISystemPaths.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/GHOST_ITimerTask.h b/intern/ghost/GHOST_ITimerTask.h
index 5d3013ac348f5169b684a65daec36461574aff42..5e77fc8d0c2b89dc0b36935bcbc48a22ca1a5815 100644
--- a/intern/ghost/GHOST_ITimerTask.h
+++ b/intern/ghost/GHOST_ITimerTask.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/GHOST_IWindow.h b/intern/ghost/GHOST_IWindow.h
index 91f576ca304b6920057d5bb72e809d00c7971013..183e97a4b558b94aca884178090a7519ea7a2c36 100644
--- a/intern/ghost/GHOST_IWindow.h
+++ b/intern/ghost/GHOST_IWindow.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/GHOST_IXrContext.h b/intern/ghost/GHOST_IXrContext.h
index 86fe78814a70a9bb4036084b205ab56913ef6aa2..ff39ddb46de52afa9daf472c0e79d63157c5cf95 100644
--- a/intern/ghost/GHOST_IXrContext.h
+++ b/intern/ghost/GHOST_IXrContext.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/GHOST_Path-api.h b/intern/ghost/GHOST_Path-api.h
index 81df2e607eb479132cc19a10e0a06350deb0789d..d303654d3e6b17c4333d16830971cb827f4e131f 100644
--- a/intern/ghost/GHOST_Path-api.h
+++ b/intern/ghost/GHOST_Path-api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/GHOST_Rect.h b/intern/ghost/GHOST_Rect.h
index 1c67ca3d2e0597a83f7cbeb98ef2b208b7efa232..0a5561b7d68d870789ff0f4cca97c26361b9bcf8 100644
--- a/intern/ghost/GHOST_Rect.h
+++ b/intern/ghost/GHOST_Rect.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/GHOST_Types.h b/intern/ghost/GHOST_Types.h
index 4e190d092341720adf321a54a4108ea2fa6b39a5..c654367072f2769d88426cddf2a3c3ef2ab82784 100644
--- a/intern/ghost/GHOST_Types.h
+++ b/intern/ghost/GHOST_Types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Buttons.cpp b/intern/ghost/intern/GHOST_Buttons.cpp
index 36205201176c665d01f13bdbd3923fa2b3f49f2e..c948c7beadbbe835e3c83e043e8695ccbda26e6f 100644
--- a/intern/ghost/intern/GHOST_Buttons.cpp
+++ b/intern/ghost/intern/GHOST_Buttons.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Buttons.h b/intern/ghost/intern/GHOST_Buttons.h
index b216d9f2839bbbf69ccd9348854ca20cd65b7364..17f25f1e082b9952447afd17036ebe8f1657c44d 100644
--- a/intern/ghost/intern/GHOST_Buttons.h
+++ b/intern/ghost/intern/GHOST_Buttons.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_C-api.cpp b/intern/ghost/intern/GHOST_C-api.cpp
index a2d1c1433165e6c6f597933705825da51187fcf4..a47d2468937099553facf35d684e37064ceb264c 100644
--- a/intern/ghost/intern/GHOST_C-api.cpp
+++ b/intern/ghost/intern/GHOST_C-api.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_CallbackEventConsumer.cpp b/intern/ghost/intern/GHOST_CallbackEventConsumer.cpp
index db6ead6d96aeffe0494d912e89a7a746eeee7bb8..72aeebdc8763774a225a6986108c0799f00fe0e0 100644
--- a/intern/ghost/intern/GHOST_CallbackEventConsumer.cpp
+++ b/intern/ghost/intern/GHOST_CallbackEventConsumer.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_CallbackEventConsumer.h b/intern/ghost/intern/GHOST_CallbackEventConsumer.h
index 0d4941907c74052d6a6a1d995a2e15e5cdd92f37..113cd2e818b3574cb45555a6bc7da27f1a242f17 100644
--- a/intern/ghost/intern/GHOST_CallbackEventConsumer.h
+++ b/intern/ghost/intern/GHOST_CallbackEventConsumer.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Context.cpp b/intern/ghost/intern/GHOST_Context.cpp
index f8a7537052774584809ca7e4b6e343aeeef6d798..f9aa80dc13dee306db8bb4dfaeeb4a444efc90d9 100644
--- a/intern/ghost/intern/GHOST_Context.cpp
+++ b/intern/ghost/intern/GHOST_Context.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Context.h b/intern/ghost/intern/GHOST_Context.h
index 810b78a7d3979cd0808a0db20cc71147d1f9659f..d9c2cdce258993554a2f3b58a6bd3810a3a51de3 100644
--- a/intern/ghost/intern/GHOST_Context.h
+++ b/intern/ghost/intern/GHOST_Context.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextCGL.h b/intern/ghost/intern/GHOST_ContextCGL.h
index 8e4376236fab5e98deb2c431e06c75600470b750..badc324110780efb22c0f478deb203caed861cdc 100644
--- a/intern/ghost/intern/GHOST_ContextCGL.h
+++ b/intern/ghost/intern/GHOST_ContextCGL.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextCGL.mm b/intern/ghost/intern/GHOST_ContextCGL.mm
index 7af243846c2c05663867709e70432b39cfa5cf5f..9322b6cee7a60f58a1d11778176deffc38c433f6 100644
--- a/intern/ghost/intern/GHOST_ContextCGL.mm
+++ b/intern/ghost/intern/GHOST_ContextCGL.mm
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextD3D.cpp b/intern/ghost/intern/GHOST_ContextD3D.cpp
index 73f6c12e100c12c20bff09e4dd31f07e80f2ef28..11f15fd1ee38f3648edae02de2cf6036c179b660 100644
--- a/intern/ghost/intern/GHOST_ContextD3D.cpp
+++ b/intern/ghost/intern/GHOST_ContextD3D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextD3D.h b/intern/ghost/intern/GHOST_ContextD3D.h
index c18c9d3c2865220f87ec43715669f1e915e6172f..c97064d9ccefc6aa0da10bcbdfd0674be7189790 100644
--- a/intern/ghost/intern/GHOST_ContextD3D.h
+++ b/intern/ghost/intern/GHOST_ContextD3D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextEGL.cpp b/intern/ghost/intern/GHOST_ContextEGL.cpp
index 82100e4b3f06a6f8487c5b536a2151db033fe7ab..a2b58106f0d45e9b4ddf842856285fa067087d82 100644
--- a/intern/ghost/intern/GHOST_ContextEGL.cpp
+++ b/intern/ghost/intern/GHOST_ContextEGL.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextEGL.h b/intern/ghost/intern/GHOST_ContextEGL.h
index 00c8e33ebdf6d5f15e638be5e5fa16a4501b0680..3250dc949787cacdf59b4e78ccc8e8df55b149f2 100644
--- a/intern/ghost/intern/GHOST_ContextEGL.h
+++ b/intern/ghost/intern/GHOST_ContextEGL.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextGLX.cpp b/intern/ghost/intern/GHOST_ContextGLX.cpp
index 78c7201ff5fbe9e9689ffc422bc364bd7d0644d8..b7d613645dc87b38630aa84bc3e9d369edab0405 100644
--- a/intern/ghost/intern/GHOST_ContextGLX.cpp
+++ b/intern/ghost/intern/GHOST_ContextGLX.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextGLX.h b/intern/ghost/intern/GHOST_ContextGLX.h
index 178c750ea9990267db373d834a7967e0e139300b..c6184bbd3da38a2ed9c38466939e162b4189bb54 100644
--- a/intern/ghost/intern/GHOST_ContextGLX.h
+++ b/intern/ghost/intern/GHOST_ContextGLX.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextNone.cpp b/intern/ghost/intern/GHOST_ContextNone.cpp
index a59cee0444fce92ab9805e31774560a3d702a777..012fc9503bf0dd5f8a817fe408634b696c812267 100644
--- a/intern/ghost/intern/GHOST_ContextNone.cpp
+++ b/intern/ghost/intern/GHOST_ContextNone.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextNone.h b/intern/ghost/intern/GHOST_ContextNone.h
index 46dde89794ace456042ce30aac5883062776a35f..4b0ad9448e895f71a24b77b23fe8ef7ab12312fb 100644
--- a/intern/ghost/intern/GHOST_ContextNone.h
+++ b/intern/ghost/intern/GHOST_ContextNone.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextSDL.cpp b/intern/ghost/intern/GHOST_ContextSDL.cpp
index bf0737e5efa465944cf522d2f9f5859f94d70ff8..050f8e43aaba3a14a1ac7a1b83ead972ef166f80 100644
--- a/intern/ghost/intern/GHOST_ContextSDL.cpp
+++ b/intern/ghost/intern/GHOST_ContextSDL.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextSDL.h b/intern/ghost/intern/GHOST_ContextSDL.h
index 8e8c91b86a3f6dbcfc66445ddd2a403653119bb8..8247ddff17be40654530b81384a4936812c51326 100644
--- a/intern/ghost/intern/GHOST_ContextSDL.h
+++ b/intern/ghost/intern/GHOST_ContextSDL.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextWGL.cpp b/intern/ghost/intern/GHOST_ContextWGL.cpp
index b412e52a5f75b14d23a72dc5eeaf34c762305a9e..fa9e2a8f3609f27983e8853a72c60358d6a84ad7 100644
--- a/intern/ghost/intern/GHOST_ContextWGL.cpp
+++ b/intern/ghost/intern/GHOST_ContextWGL.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ContextWGL.h b/intern/ghost/intern/GHOST_ContextWGL.h
index 7367bc3baed56324bb5fce44ae78bf5c6e563931..ca0bf70b128341fe4ff5d7b4f950195d0cc0e426 100644
--- a/intern/ghost/intern/GHOST_ContextWGL.h
+++ b/intern/ghost/intern/GHOST_ContextWGL.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Debug.h b/intern/ghost/intern/GHOST_Debug.h
index 13858410c5a5ceba3f597f5bd2d3290924292e3e..e6bdf974d59993cb83ebcec75150c0fd96733c4c 100644
--- a/intern/ghost/intern/GHOST_Debug.h
+++ b/intern/ghost/intern/GHOST_Debug.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DisplayManager.cpp b/intern/ghost/intern/GHOST_DisplayManager.cpp
index 9abc652378aaf63d7da281aa23bfda4b979f6f27..18de4ab6c8f0e94f92e790b5bd048d1492fd318b 100644
--- a/intern/ghost/intern/GHOST_DisplayManager.cpp
+++ b/intern/ghost/intern/GHOST_DisplayManager.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DisplayManager.h b/intern/ghost/intern/GHOST_DisplayManager.h
index 609dfa72dc60e4eb8f67a4a2d1b959c02bc1545b..839998ac1e108e00416299366a8262eaeecc7ede 100644
--- a/intern/ghost/intern/GHOST_DisplayManager.h
+++ b/intern/ghost/intern/GHOST_DisplayManager.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DisplayManagerCocoa.h b/intern/ghost/intern/GHOST_DisplayManagerCocoa.h
index cea124a601d2d03a5e3ef475109266788c675dc9..7106db314ea72270bf28b14c2b9bce09b710cbc5 100644
--- a/intern/ghost/intern/GHOST_DisplayManagerCocoa.h
+++ b/intern/ghost/intern/GHOST_DisplayManagerCocoa.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DisplayManagerCocoa.mm b/intern/ghost/intern/GHOST_DisplayManagerCocoa.mm
index 35ea4c12818e35b368e87d7e20c326288bd54704..e277382c766187323912c2960811aa6ec29d31d7 100644
--- a/intern/ghost/intern/GHOST_DisplayManagerCocoa.mm
+++ b/intern/ghost/intern/GHOST_DisplayManagerCocoa.mm
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2001-2002 NaN Holding BV. All rights reserved.
- *           2009 Damien Plisson
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. 2009 Damien Plisson. */
 
 #include <Cocoa/Cocoa.h>
 
diff --git a/intern/ghost/intern/GHOST_DisplayManagerNULL.h b/intern/ghost/intern/GHOST_DisplayManagerNULL.h
index 6b9e9a5a30e803e44a80b44bccc14912187ae788..ba72dcbe8dda22c1bc609c3fdd4363113be0d2aa 100644
--- a/intern/ghost/intern/GHOST_DisplayManagerNULL.h
+++ b/intern/ghost/intern/GHOST_DisplayManagerNULL.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DisplayManagerSDL.cpp b/intern/ghost/intern/GHOST_DisplayManagerSDL.cpp
index 09b2e4dfe2bd429f12b821df1ead2c70c55fd363..740fcc2ef1d4d9806ce6780cebf4cc921f8fecfb 100644
--- a/intern/ghost/intern/GHOST_DisplayManagerSDL.cpp
+++ b/intern/ghost/intern/GHOST_DisplayManagerSDL.cpp
@@ -1,22 +1,8 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Mode switching
- * Copyright (C) 1997-2001 Id Software, Inc.
- * Copyright (c) 1993-2011 Tim Riker
- * Copyright (C) 2012 Alex Fraser
- */
+ * Copyright 1997-2001 Id Software, Inc.
+ * Copyright 1993-2011 Tim Riker
+ * Copyright 2012 Alex Fraser */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DisplayManagerSDL.h b/intern/ghost/intern/GHOST_DisplayManagerSDL.h
index a719368275c99afe3beaa72f88852b37805e7d0d..266eb9b8455d6f28d787e386b8663ea947af78d2 100644
--- a/intern/ghost/intern/GHOST_DisplayManagerSDL.h
+++ b/intern/ghost/intern/GHOST_DisplayManagerSDL.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DisplayManagerWin32.cpp b/intern/ghost/intern/GHOST_DisplayManagerWin32.cpp
index 2895ddd68a9a4db57e4614b3ae2981521b04f86b..3d8920d7c52f550eefa59f2f73729b0df0cc943b 100644
--- a/intern/ghost/intern/GHOST_DisplayManagerWin32.cpp
+++ b/intern/ghost/intern/GHOST_DisplayManagerWin32.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DisplayManagerWin32.h b/intern/ghost/intern/GHOST_DisplayManagerWin32.h
index 31cde2fc63dd2bb10efbb736c7be101edcaff143..387867d2a5d2d951e41cf40ad1994c5891fce483 100644
--- a/intern/ghost/intern/GHOST_DisplayManagerWin32.h
+++ b/intern/ghost/intern/GHOST_DisplayManagerWin32.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DisplayManagerX11.cpp b/intern/ghost/intern/GHOST_DisplayManagerX11.cpp
index 59abf9e51e43446003e2a84754040be2ba837d45..843f22df1c324160f2dc0d99bffdf17b609aa30f 100644
--- a/intern/ghost/intern/GHOST_DisplayManagerX11.cpp
+++ b/intern/ghost/intern/GHOST_DisplayManagerX11.cpp
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           1997-2001 Id Software, Inc. Video mode switching.
- *                     Ported from Quake 2 by Alex Fraser <alex@phatcore.com>.
- */
+ *                     Ported from Quake 2 by Alex Fraser <alex@phatcore.com>. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DisplayManagerX11.h b/intern/ghost/intern/GHOST_DisplayManagerX11.h
index 52702a397d72a3bd884941865fee956c28bc0f08..497759cb8af4a443f057af8d6685b2a50ea157c7 100644
--- a/intern/ghost/intern/GHOST_DisplayManagerX11.h
+++ b/intern/ghost/intern/GHOST_DisplayManagerX11.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DropTargetWin32.cpp b/intern/ghost/intern/GHOST_DropTargetWin32.cpp
index c51bd58898b7cf7ece84981be25dbdebff590687..a82a31e73860b447dab43659c5de51722d13d897 100644
--- a/intern/ghost/intern/GHOST_DropTargetWin32.cpp
+++ b/intern/ghost/intern/GHOST_DropTargetWin32.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DropTargetWin32.h b/intern/ghost/intern/GHOST_DropTargetWin32.h
index 08e8ba11b23a05fe798669eb41cdbd0e183300d2..2f628e81b5622f48a05131ea4b218b2555bdcc11 100644
--- a/intern/ghost/intern/GHOST_DropTargetWin32.h
+++ b/intern/ghost/intern/GHOST_DropTargetWin32.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DropTargetX11.cpp b/intern/ghost/intern/GHOST_DropTargetX11.cpp
index dba1d3051440e479e3a0f5c4313715640856d095..0212a71d2ff612cba612a559d9dcc7a5916037e1 100644
--- a/intern/ghost/intern/GHOST_DropTargetX11.cpp
+++ b/intern/ghost/intern/GHOST_DropTargetX11.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_DropTargetX11.h b/intern/ghost/intern/GHOST_DropTargetX11.h
index f538dbbb6170b8c4610acf4b8bef60f7aa055cf2..f0ef27697e1d6198e9f070ed2d479c8140239f77 100644
--- a/intern/ghost/intern/GHOST_DropTargetX11.h
+++ b/intern/ghost/intern/GHOST_DropTargetX11.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Event.h b/intern/ghost/intern/GHOST_Event.h
index 0194afd559cceb7501ef1c994e7bff1f19ea41ff..0813378a81970ee7af3fc5da32478883aa04b41f 100644
--- a/intern/ghost/intern/GHOST_Event.h
+++ b/intern/ghost/intern/GHOST_Event.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_EventButton.h b/intern/ghost/intern/GHOST_EventButton.h
index 02563254a82f60b293aec2120b1fb13dd27c0897..d68e401ffc4172d7e140d6f350a2d866189d693e 100644
--- a/intern/ghost/intern/GHOST_EventButton.h
+++ b/intern/ghost/intern/GHOST_EventButton.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_EventCursor.h b/intern/ghost/intern/GHOST_EventCursor.h
index facbab0855d2d63de81713e65d26e3b70df59d35..a9e834e6531424bf5a2db6651f258d1c63fa1527 100644
--- a/intern/ghost/intern/GHOST_EventCursor.h
+++ b/intern/ghost/intern/GHOST_EventCursor.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_EventDragnDrop.h b/intern/ghost/intern/GHOST_EventDragnDrop.h
index 0095cedb8c86b4a28112373491d372ed530a7671..3e703731ced37041f2ffcbe93a587766f7cd3cad 100644
--- a/intern/ghost/intern/GHOST_EventDragnDrop.h
+++ b/intern/ghost/intern/GHOST_EventDragnDrop.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_EventKey.h b/intern/ghost/intern/GHOST_EventKey.h
index 93e6f0380daa83a28b3f07dbea788e3d5faa6647..1c3156c27d2d7249dd0c2c03080d03a898c1a645 100644
--- a/intern/ghost/intern/GHOST_EventKey.h
+++ b/intern/ghost/intern/GHOST_EventKey.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_EventManager.cpp b/intern/ghost/intern/GHOST_EventManager.cpp
index 6ddc362ac771fcfee0186f0a3a0a4f3372c1f534..670631e4e16adee8d3f81b4242d346d8401cb1c0 100644
--- a/intern/ghost/intern/GHOST_EventManager.cpp
+++ b/intern/ghost/intern/GHOST_EventManager.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_EventManager.h b/intern/ghost/intern/GHOST_EventManager.h
index ba936e449f55d0cad948b3d55440c1300906cfa4..32666ff57c89851b417c70795072eb97b862e855 100644
--- a/intern/ghost/intern/GHOST_EventManager.h
+++ b/intern/ghost/intern/GHOST_EventManager.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_EventNDOF.h b/intern/ghost/intern/GHOST_EventNDOF.h
index 10f39f4be663c946e1f0d91ec421421d6f58ca42..79a8974a07aa1d827ed4fbf21f06ca227558c2ec 100644
--- a/intern/ghost/intern/GHOST_EventNDOF.h
+++ b/intern/ghost/intern/GHOST_EventNDOF.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_EventPrinter.cpp b/intern/ghost/intern/GHOST_EventPrinter.cpp
index 48043fa709b111e9effe8f8b2de08f36a2a0d838..758938e879ebec0986993b9004ba53d515ceac2a 100644
--- a/intern/ghost/intern/GHOST_EventPrinter.cpp
+++ b/intern/ghost/intern/GHOST_EventPrinter.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_EventPrinter.h b/intern/ghost/intern/GHOST_EventPrinter.h
index 96d0b9acf2de1868707dd781dbae2c6d702234f9..dfa35f720269e74a961fd390192fad1cb1671ae1 100644
--- a/intern/ghost/intern/GHOST_EventPrinter.h
+++ b/intern/ghost/intern/GHOST_EventPrinter.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_EventString.h b/intern/ghost/intern/GHOST_EventString.h
index a457c2e058abe03f9df7d1a8c3ade1459bdd57c3..fa59462b32b834f2eaac7b4adb9960e6ef8465e3 100644
--- a/intern/ghost/intern/GHOST_EventString.h
+++ b/intern/ghost/intern/GHOST_EventString.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_EventTrackpad.h b/intern/ghost/intern/GHOST_EventTrackpad.h
index 58420f6d7135a4bd9bea2af64227d86f67bad585..4b98514eeef7bc7d4f66fa07f1d71986be36685f 100644
--- a/intern/ghost/intern/GHOST_EventTrackpad.h
+++ b/intern/ghost/intern/GHOST_EventTrackpad.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_EventWheel.h b/intern/ghost/intern/GHOST_EventWheel.h
index 666b3c7aba6e83f81e8975f75fecba2d633fa0b1..7c32d575e679737a0ab4d9a81b040136314a3c14 100644
--- a/intern/ghost/intern/GHOST_EventWheel.h
+++ b/intern/ghost/intern/GHOST_EventWheel.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ISystem.cpp b/intern/ghost/intern/GHOST_ISystem.cpp
index d9fecda22a43e9623e34d57090fe9206ff8a199a..7906002b2b5cd4c010e63ce449a32c451f314feb 100644
--- a/intern/ghost/intern/GHOST_ISystem.cpp
+++ b/intern/ghost/intern/GHOST_ISystem.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ISystemPaths.cpp b/intern/ghost/intern/GHOST_ISystemPaths.cpp
index f3bcd279211df42763b982b910e30a2931037955..dacb5421da0061de80d7a39c943f5ce9376803f5 100644
--- a/intern/ghost/intern/GHOST_ISystemPaths.cpp
+++ b/intern/ghost/intern/GHOST_ISystemPaths.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_IXrGraphicsBinding.h b/intern/ghost/intern/GHOST_IXrGraphicsBinding.h
index bfdf0cac633e94f42634ce9e0012fa772690b9fd..1246aa19a99dd49445304a1e68dffe4335f1d8bb 100644
--- a/intern/ghost/intern/GHOST_IXrGraphicsBinding.h
+++ b/intern/ghost/intern/GHOST_IXrGraphicsBinding.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_IconX11.h b/intern/ghost/intern/GHOST_IconX11.h
index 403d611b71dd615f72c01cda892406473745a15c..d30cecd127c2bd245a2315a6cfea5535ddbf0ecd 100644
--- a/intern/ghost/intern/GHOST_IconX11.h
+++ b/intern/ghost/intern/GHOST_IconX11.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ImeWin32.cpp b/intern/ghost/intern/GHOST_ImeWin32.cpp
index 8366cbba869770962da180aad91511eb8b4e3c2c..702c10d377b7d0fccf78dcbce3e5cba6018cc565 100644
--- a/intern/ghost/intern/GHOST_ImeWin32.cpp
+++ b/intern/ghost/intern/GHOST_ImeWin32.cpp
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (c) 2010 The Chromium Authors. All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * The Original Code is Copyright 2010 The Chromium Authors. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ImeWin32.h b/intern/ghost/intern/GHOST_ImeWin32.h
index d17740c42d36f05dfe2dd8f11da338c28b0a5218..0ae2bbc59e90c7387236589dcdbda3a5a341b55f 100644
--- a/intern/ghost/intern/GHOST_ImeWin32.h
+++ b/intern/ghost/intern/GHOST_ImeWin32.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (c) 2010 The Chromium Authors. All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * The Original Code is Copyright 2010 The Chromium Authors. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ModifierKeys.cpp b/intern/ghost/intern/GHOST_ModifierKeys.cpp
index 6b74eab17b8a354198de92e719f8fd0de72bf5b0..e6e433ba332b8028d48ed3c238ab0f408ac0781a 100644
--- a/intern/ghost/intern/GHOST_ModifierKeys.cpp
+++ b/intern/ghost/intern/GHOST_ModifierKeys.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_ModifierKeys.h b/intern/ghost/intern/GHOST_ModifierKeys.h
index f951cae3a41e5357ea1bfd478b7d89e9c3d43e48..ca76ba6c7045b3647837a297829887f21dca6a88 100644
--- a/intern/ghost/intern/GHOST_ModifierKeys.h
+++ b/intern/ghost/intern/GHOST_ModifierKeys.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_NDOFManager.cpp b/intern/ghost/intern/GHOST_NDOFManager.cpp
index 0317c17527350f71e6d5a83ee6da8efd92894f83..7f6b5f53316c951bd225c07f73e2ee0deb90cc4b 100644
--- a/intern/ghost/intern/GHOST_NDOFManager.cpp
+++ b/intern/ghost/intern/GHOST_NDOFManager.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "GHOST_NDOFManager.h"
 #include "GHOST_Debug.h"
diff --git a/intern/ghost/intern/GHOST_NDOFManager.h b/intern/ghost/intern/GHOST_NDOFManager.h
index 31b11a352db0f39902c65926b37a92e27a77be11..d49e6326722c9b979fe1488db0d161011e5efbd0 100644
--- a/intern/ghost/intern/GHOST_NDOFManager.h
+++ b/intern/ghost/intern/GHOST_NDOFManager.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/intern/ghost/intern/GHOST_NDOFManagerCocoa.h b/intern/ghost/intern/GHOST_NDOFManagerCocoa.h
index f7c3599502e045c5dfdda235fbe18b272fdf27aa..a40406ad2d08ce8401e442bf930d157275b97104 100644
--- a/intern/ghost/intern/GHOST_NDOFManagerCocoa.h
+++ b/intern/ghost/intern/GHOST_NDOFManagerCocoa.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/intern/ghost/intern/GHOST_NDOFManagerCocoa.mm b/intern/ghost/intern/GHOST_NDOFManagerCocoa.mm
index 63a38fd9297735d8ae7fc817da9038dcc3800d95..6f8208915d804be31b447b2bd75fe2b2e4595c5c 100644
--- a/intern/ghost/intern/GHOST_NDOFManagerCocoa.mm
+++ b/intern/ghost/intern/GHOST_NDOFManagerCocoa.mm
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #define DEBUG_NDOF_DRIVER false
 
diff --git a/intern/ghost/intern/GHOST_NDOFManagerUnix.cpp b/intern/ghost/intern/GHOST_NDOFManagerUnix.cpp
index 983bb38307e82b38b4bc390b6ee2137f4f1fa67d..7e53ce45f7036c558b92e64f0fbe52ee20ce07b0 100644
--- a/intern/ghost/intern/GHOST_NDOFManagerUnix.cpp
+++ b/intern/ghost/intern/GHOST_NDOFManagerUnix.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "GHOST_NDOFManagerUnix.h"
 #include "GHOST_System.h"
diff --git a/intern/ghost/intern/GHOST_NDOFManagerUnix.h b/intern/ghost/intern/GHOST_NDOFManagerUnix.h
index 6dd4289ffacbe77d0abe74e8f89b428a0077886b..fd603e3cb54fac55ef511b5c4bd4d38073368662 100644
--- a/intern/ghost/intern/GHOST_NDOFManagerUnix.h
+++ b/intern/ghost/intern/GHOST_NDOFManagerUnix.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/intern/ghost/intern/GHOST_NDOFManagerWin32.cpp b/intern/ghost/intern/GHOST_NDOFManagerWin32.cpp
index 5bd1bdfb6a13127689c3623fa0044776fc17054b..36202278ea16a9aed48016a798c5e0f465056d47 100644
--- a/intern/ghost/intern/GHOST_NDOFManagerWin32.cpp
+++ b/intern/ghost/intern/GHOST_NDOFManagerWin32.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "GHOST_NDOFManagerWin32.h"
 
diff --git a/intern/ghost/intern/GHOST_NDOFManagerWin32.h b/intern/ghost/intern/GHOST_NDOFManagerWin32.h
index 62d9b9207dc59e26b68d5e3bc1597c516ea87608..1da269d23da371ff42b045d2be9db626b5472eb9 100644
--- a/intern/ghost/intern/GHOST_NDOFManagerWin32.h
+++ b/intern/ghost/intern/GHOST_NDOFManagerWin32.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/intern/ghost/intern/GHOST_Path-api.cpp b/intern/ghost/intern/GHOST_Path-api.cpp
index 4f4d1d5a1c88fd24df6f82630d79d764d2810d26..c57af8a1a21910764b52b33adbb4ef5c1b503d52 100644
--- a/intern/ghost/intern/GHOST_Path-api.cpp
+++ b/intern/ghost/intern/GHOST_Path-api.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Rect.cpp b/intern/ghost/intern/GHOST_Rect.cpp
index 78c88cb0a718d338cb967e0458ac9285f99d5cff..c425b21cd27af76d98418c5bd750f98c3b30a03b 100644
--- a/intern/ghost/intern/GHOST_Rect.cpp
+++ b/intern/ghost/intern/GHOST_Rect.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_System.cpp b/intern/ghost/intern/GHOST_System.cpp
index d09c167cb954601521df13bbaf52089e1692ff53..e9c63502f66fa6327fc756cbdcdf1e9122b445e7 100644
--- a/intern/ghost/intern/GHOST_System.cpp
+++ b/intern/ghost/intern/GHOST_System.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_System.h b/intern/ghost/intern/GHOST_System.h
index 16c34ff1a6dc402c3c06ea190c1b4aae086e71d4..8602dd94e8cf3218c9b4547e3359bf8cfe755631 100644
--- a/intern/ghost/intern/GHOST_System.h
+++ b/intern/ghost/intern/GHOST_System.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemCocoa.h b/intern/ghost/intern/GHOST_SystemCocoa.h
index 02216f9d1f839894b2f317863b85f7175a5688f7..a601d00561a1652f79b206b190d531b784caf5de 100644
--- a/intern/ghost/intern/GHOST_SystemCocoa.h
+++ b/intern/ghost/intern/GHOST_SystemCocoa.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemCocoa.mm b/intern/ghost/intern/GHOST_SystemCocoa.mm
index 756c4f876ed8d293002ae6966a164c0326f9dfef..51d4083b436b362d79ba04f8cae298ccf261238f 100644
--- a/intern/ghost/intern/GHOST_SystemCocoa.mm
+++ b/intern/ghost/intern/GHOST_SystemCocoa.mm
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #include "GHOST_SystemCocoa.h"
 
diff --git a/intern/ghost/intern/GHOST_SystemNULL.h b/intern/ghost/intern/GHOST_SystemNULL.h
index 53cd97e8e57c5d901b7922406cd3790055277cb3..7b92d1d13a146d3a7c8388802ea0526b06ddf4f6 100644
--- a/intern/ghost/intern/GHOST_SystemNULL.h
+++ b/intern/ghost/intern/GHOST_SystemNULL.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemPaths.h b/intern/ghost/intern/GHOST_SystemPaths.h
index 5bd52d44b42e68f29a10157cad60543bdb4ac905..03fc0ecfba70f0959a7437deb16b6e034702b2e1 100644
--- a/intern/ghost/intern/GHOST_SystemPaths.h
+++ b/intern/ghost/intern/GHOST_SystemPaths.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemPathsCocoa.h b/intern/ghost/intern/GHOST_SystemPathsCocoa.h
index 1af63fc9b566267668f75833c90676aa3408b97d..ff698732d101698c40583687222dc7f6a0422f22 100644
--- a/intern/ghost/intern/GHOST_SystemPathsCocoa.h
+++ b/intern/ghost/intern/GHOST_SystemPathsCocoa.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemPathsCocoa.mm b/intern/ghost/intern/GHOST_SystemPathsCocoa.mm
index 4032c145ab4f4bf69a7eca30ac20bf0612b3b11e..46a91b36c61189de594ded0dc21c30661ad3b920 100644
--- a/intern/ghost/intern/GHOST_SystemPathsCocoa.mm
+++ b/intern/ghost/intern/GHOST_SystemPathsCocoa.mm
@@ -1,23 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 Blender Foundation.
- * All rights reserved.
- *
- *
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 #import <Foundation/Foundation.h>
 
diff --git a/intern/ghost/intern/GHOST_SystemPathsUnix.cpp b/intern/ghost/intern/GHOST_SystemPathsUnix.cpp
index 72396782752188597d2f1ea344cf2635b2637bed..d2c678855f2b4477b17f62ba6ed876031c0829c8 100644
--- a/intern/ghost/intern/GHOST_SystemPathsUnix.cpp
+++ b/intern/ghost/intern/GHOST_SystemPathsUnix.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemPathsUnix.h b/intern/ghost/intern/GHOST_SystemPathsUnix.h
index 37fb432e9e80cac4333afe059ea984d052df54a3..4f78a78bab9e75909ce4a5d9bad135f484294dbb 100644
--- a/intern/ghost/intern/GHOST_SystemPathsUnix.h
+++ b/intern/ghost/intern/GHOST_SystemPathsUnix.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemPathsWin32.cpp b/intern/ghost/intern/GHOST_SystemPathsWin32.cpp
index bced552921f44dff111296bab9415c14d6ce0bec..1a29497d2d6ab847133540204e75be9acb1e2bc2 100644
--- a/intern/ghost/intern/GHOST_SystemPathsWin32.cpp
+++ b/intern/ghost/intern/GHOST_SystemPathsWin32.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemPathsWin32.h b/intern/ghost/intern/GHOST_SystemPathsWin32.h
index c9f7f6b987f71b2046b1e6847192359a1021281b..13694e225e727398de33b87732e6b0589602910f 100644
--- a/intern/ghost/intern/GHOST_SystemPathsWin32.h
+++ b/intern/ghost/intern/GHOST_SystemPathsWin32.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemSDL.cpp b/intern/ghost/intern/GHOST_SystemSDL.cpp
index 5370d4df8577f433d155b34e170f30fb884f0c0b..d088b6717f9cf8645c1aadf0ab5993a2c038f1f7 100644
--- a/intern/ghost/intern/GHOST_SystemSDL.cpp
+++ b/intern/ghost/intern/GHOST_SystemSDL.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemSDL.h b/intern/ghost/intern/GHOST_SystemSDL.h
index 8706dd0daa7349451476e3895234cf4045824e47..7770792467562952204f4d24a0a8ab45a9555608 100644
--- a/intern/ghost/intern/GHOST_SystemSDL.h
+++ b/intern/ghost/intern/GHOST_SystemSDL.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemWayland.cpp b/intern/ghost/intern/GHOST_SystemWayland.cpp
index 27b37d0d326dd2f1734a01cfd0ba2bdc026fe278..6f694bfd9a6580fecfd6247f0fb80d8fae17e0af 100644
--- a/intern/ghost/intern/GHOST_SystemWayland.cpp
+++ b/intern/ghost/intern/GHOST_SystemWayland.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemWayland.h b/intern/ghost/intern/GHOST_SystemWayland.h
index b11c243aca84521ab258b63beecc09c8543a4029..1f664915ad3aca768d07ac23c8b824d3b1b3e3b3 100644
--- a/intern/ghost/intern/GHOST_SystemWayland.h
+++ b/intern/ghost/intern/GHOST_SystemWayland.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemWin32.cpp b/intern/ghost/intern/GHOST_SystemWin32.cpp
index 2f5395fc8d0e14d123055833e1788141a62c99c0..1c26935ed64c899c66e646adfcfb2e6bfae8453d 100644
--- a/intern/ghost/intern/GHOST_SystemWin32.cpp
+++ b/intern/ghost/intern/GHOST_SystemWin32.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemWin32.h b/intern/ghost/intern/GHOST_SystemWin32.h
index 4f0fd6e6801953cad4d3a38b8c745386a450a98d..16ad5f041cacca9c7ee71705a14b3822b69212fa 100644
--- a/intern/ghost/intern/GHOST_SystemWin32.h
+++ b/intern/ghost/intern/GHOST_SystemWin32.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemX11.cpp b/intern/ghost/intern/GHOST_SystemX11.cpp
index 941642978c099180e04022b28db5f39630a3f0c9..ebee5f58fff9174971a947dfc10c5680e2bacabb 100644
--- a/intern/ghost/intern/GHOST_SystemX11.cpp
+++ b/intern/ghost/intern/GHOST_SystemX11.cpp
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2009 Nokia Corporation and/or its subsidiary(-ies).
- *                Part of this code has been taken from Qt, under LGPL license.
- */
+ *                Part of this code has been taken from Qt, under LGPL license. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_SystemX11.h b/intern/ghost/intern/GHOST_SystemX11.h
index 76011d3522bb33146b6125cd37e6a6cc0f1b94c1..7938aa2b646c55bfa79e767738d635e6a006ce83 100644
--- a/intern/ghost/intern/GHOST_SystemX11.h
+++ b/intern/ghost/intern/GHOST_SystemX11.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_TaskbarWin32.h b/intern/ghost/intern/GHOST_TaskbarWin32.h
index e6464f5e6268d7f843c4ec055d093d481a918bd9..0b21e09ea383a291d1bcdb3ac6467d685c90c8e4 100644
--- a/intern/ghost/intern/GHOST_TaskbarWin32.h
+++ b/intern/ghost/intern/GHOST_TaskbarWin32.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_TaskbarX11.cpp b/intern/ghost/intern/GHOST_TaskbarX11.cpp
index 2fa8137e1be7072fdea02a8a3275f3ed40c0d8f2..85ec5eb6943d1b1668a07764163093e24a6f4b22 100644
--- a/intern/ghost/intern/GHOST_TaskbarX11.cpp
+++ b/intern/ghost/intern/GHOST_TaskbarX11.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_TaskbarX11.h b/intern/ghost/intern/GHOST_TaskbarX11.h
index 25de5aa95115da23682ccb3b7775b01f72f55679..c564825f93b8acc82651138cf4a2473918648e19 100644
--- a/intern/ghost/intern/GHOST_TaskbarX11.h
+++ b/intern/ghost/intern/GHOST_TaskbarX11.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_TimerManager.cpp b/intern/ghost/intern/GHOST_TimerManager.cpp
index 0c88150381f934ceeaf84d3fec9743e52d1a8335..504cdbfb6c80bbf3fa5bec893f86777095310e3b 100644
--- a/intern/ghost/intern/GHOST_TimerManager.cpp
+++ b/intern/ghost/intern/GHOST_TimerManager.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_TimerManager.h b/intern/ghost/intern/GHOST_TimerManager.h
index 6261218a023f7283b5c34c8f399f941b7ea0cb55..090a84d1f14a136a9374b0c996fd8c467ace3af6 100644
--- a/intern/ghost/intern/GHOST_TimerManager.h
+++ b/intern/ghost/intern/GHOST_TimerManager.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_TimerTask.h b/intern/ghost/intern/GHOST_TimerTask.h
index e2812c6312baf5c3e0a32a1fb0626c044139db0d..f59b832740f4413a32c5089c3731c11352212688 100644
--- a/intern/ghost/intern/GHOST_TimerTask.h
+++ b/intern/ghost/intern/GHOST_TimerTask.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Util.h b/intern/ghost/intern/GHOST_Util.h
index 8be5e373b28c048e74732065e99bb78016839cfd..2450f3b46a64da46e398205c58539ccd415b08a8 100644
--- a/intern/ghost/intern/GHOST_Util.h
+++ b/intern/ghost/intern/GHOST_Util.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_WaylandCursorSettings.h b/intern/ghost/intern/GHOST_WaylandCursorSettings.h
index c7d2d82ff841a69583f40b3bba620741d9574156..1e8cc2ac8a9343c57ec1ea5c933e6e8bd7afbc91 100644
--- a/intern/ghost/intern/GHOST_WaylandCursorSettings.h
+++ b/intern/ghost/intern/GHOST_WaylandCursorSettings.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Window.cpp b/intern/ghost/intern/GHOST_Window.cpp
index 6009d7dbcfc75313d235d459f9caf1ed883e49c2..834836a7f4dbfc2073ab8599df1d5f34958df490 100644
--- a/intern/ghost/intern/GHOST_Window.cpp
+++ b/intern/ghost/intern/GHOST_Window.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Window.h b/intern/ghost/intern/GHOST_Window.h
index a3eb116780fa4743dcaec03766b287abad3a1303..794e834d5c7c783e0986baf6e925c89ce5e7837d 100644
--- a/intern/ghost/intern/GHOST_Window.h
+++ b/intern/ghost/intern/GHOST_Window.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_WindowCocoa.h b/intern/ghost/intern/GHOST_WindowCocoa.h
index 68ac507f0e0c1184833c79f0d5fb4e21360aa51e..35daa9ec2a343d9a7452837e043ae2be6f202648 100644
--- a/intern/ghost/intern/GHOST_WindowCocoa.h
+++ b/intern/ghost/intern/GHOST_WindowCocoa.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_WindowCocoa.mm b/intern/ghost/intern/GHOST_WindowCocoa.mm
index 0c3b3062126a6e6afa5c65b9a1c18d16216e5f90..4a1b3c2fe1603c46a79699378b17c1b3cc0fd129 100644
--- a/intern/ghost/intern/GHOST_WindowCocoa.mm
+++ b/intern/ghost/intern/GHOST_WindowCocoa.mm
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #include "GHOST_WindowCocoa.h"
 #include "GHOST_ContextNone.h"
diff --git a/intern/ghost/intern/GHOST_WindowManager.cpp b/intern/ghost/intern/GHOST_WindowManager.cpp
index 4cb808842097f0470b2de9982805a86296b261c1..28dd1bdb582cc16ba6b50978f653a7e53729b56f 100644
--- a/intern/ghost/intern/GHOST_WindowManager.cpp
+++ b/intern/ghost/intern/GHOST_WindowManager.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_WindowManager.h b/intern/ghost/intern/GHOST_WindowManager.h
index cb0337773c61e390ecf26e96326c598319d298f0..9d20413c433170075c024fc03b7d355748b08750 100644
--- a/intern/ghost/intern/GHOST_WindowManager.h
+++ b/intern/ghost/intern/GHOST_WindowManager.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_WindowNULL.h b/intern/ghost/intern/GHOST_WindowNULL.h
index a3f9e2f0a137742f077d1abc382b0320c0cfd993..1cbca80a49c3feaada9e610de20587a2090de203 100644
--- a/intern/ghost/intern/GHOST_WindowNULL.h
+++ b/intern/ghost/intern/GHOST_WindowNULL.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_WindowSDL.cpp b/intern/ghost/intern/GHOST_WindowSDL.cpp
index fa1fcee291164ce3d8c327414b8e2a10d1c1b2c0..7a9ff348b0a19d5c1ff66146156a389792ae5a26 100644
--- a/intern/ghost/intern/GHOST_WindowSDL.cpp
+++ b/intern/ghost/intern/GHOST_WindowSDL.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_WindowSDL.h b/intern/ghost/intern/GHOST_WindowSDL.h
index d2eedecc506a321bc7d5caccb732d84406674f96..cdea7e0d0b60fbbfe33ea3dbb15f40db649574ad 100644
--- a/intern/ghost/intern/GHOST_WindowSDL.h
+++ b/intern/ghost/intern/GHOST_WindowSDL.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_WindowViewCocoa.h b/intern/ghost/intern/GHOST_WindowViewCocoa.h
index 1bda59c35050096a9e89904411e8309f6553dbff..635c0052a3a3e4d2ebc267a886909711c6ebf2e0 100644
--- a/intern/ghost/intern/GHOST_WindowViewCocoa.h
+++ b/intern/ghost/intern/GHOST_WindowViewCocoa.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /* The Carbon API is still needed to check if the Input Source (Input Method or IME) is valid. */
 #ifdef WITH_INPUT_IME
diff --git a/intern/ghost/intern/GHOST_WindowWayland.cpp b/intern/ghost/intern/GHOST_WindowWayland.cpp
index 71062a4b6d61d33a6e3d857318336ec80d252b02..7ae06623c91bedce106e7140284f49de334374b7 100644
--- a/intern/ghost/intern/GHOST_WindowWayland.cpp
+++ b/intern/ghost/intern/GHOST_WindowWayland.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_WindowWayland.h b/intern/ghost/intern/GHOST_WindowWayland.h
index afbdf1268ee595179df95f44868aadbac40162b6..d5dd123014b54df31292e3786c2bccd8d6c60f18 100644
--- a/intern/ghost/intern/GHOST_WindowWayland.h
+++ b/intern/ghost/intern/GHOST_WindowWayland.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_WindowWin32.cpp b/intern/ghost/intern/GHOST_WindowWin32.cpp
index 47d4ff77d170a51737c0626c480270daa735f048..0f4b5147082751e487a0997489bd2b60e3bb29cb 100644
--- a/intern/ghost/intern/GHOST_WindowWin32.cpp
+++ b/intern/ghost/intern/GHOST_WindowWin32.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_WindowWin32.h b/intern/ghost/intern/GHOST_WindowWin32.h
index ed5292f1712c6c2f94816c6ef690408b92638154..79b4e9d0cf6e5f32bf9e2fd21bd0ad5ee1555613 100644
--- a/intern/ghost/intern/GHOST_WindowWin32.h
+++ b/intern/ghost/intern/GHOST_WindowWin32.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_WindowX11.cpp b/intern/ghost/intern/GHOST_WindowX11.cpp
index c77ef162d9a3e353d8776ccdd7aab8f6e485ff6f..e2d23ceac0bc3b2f6bb4ce2c41afbf908315d19a 100644
--- a/intern/ghost/intern/GHOST_WindowX11.cpp
+++ b/intern/ghost/intern/GHOST_WindowX11.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_WindowX11.h b/intern/ghost/intern/GHOST_WindowX11.h
index 9f3d48dfafc279181e29e56adaf302e93829e8cb..ac4edd835492da054145829382843f8a1a99394a 100644
--- a/intern/ghost/intern/GHOST_WindowX11.h
+++ b/intern/ghost/intern/GHOST_WindowX11.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Wintab.cpp b/intern/ghost/intern/GHOST_Wintab.cpp
index 953fcb171e50630bd46a4da5b280fbcb43a2db0f..aaf9503b294a9624a045dc4f28abbdb0bc0fcd87 100644
--- a/intern/ghost/intern/GHOST_Wintab.cpp
+++ b/intern/ghost/intern/GHOST_Wintab.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Wintab.h b/intern/ghost/intern/GHOST_Wintab.h
index 1994f057db9d6e1d8c19ad816a70cf78899c2768..a793d2d8f6345e03c7c5f8be83305ab6cdbacc73 100644
--- a/intern/ghost/intern/GHOST_Wintab.h
+++ b/intern/ghost/intern/GHOST_Wintab.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Xr.cpp b/intern/ghost/intern/GHOST_Xr.cpp
index 2c94aaab430a5e4ca89d6d920b664d22f0daee6a..f32200102cd841892bb46681fe813f5a1f78c1e7 100644
--- a/intern/ghost/intern/GHOST_Xr.cpp
+++ b/intern/ghost/intern/GHOST_Xr.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_XrAction.cpp b/intern/ghost/intern/GHOST_XrAction.cpp
index f51f98c9b3d71b7fe3d271f9c1a848bcc027424d..587b1124848c8b49be03062a8c6184871924fb77 100644
--- a/intern/ghost/intern/GHOST_XrAction.cpp
+++ b/intern/ghost/intern/GHOST_XrAction.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_XrAction.h b/intern/ghost/intern/GHOST_XrAction.h
index 3e2224fe3ff873abcaacb63e510820e0f3e0c19d..956ff342dc417a76c51681869adfa1f5449bb7a5 100644
--- a/intern/ghost/intern/GHOST_XrAction.h
+++ b/intern/ghost/intern/GHOST_XrAction.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_XrContext.cpp b/intern/ghost/intern/GHOST_XrContext.cpp
index 9fa93f0c4b4016e6c407ada3b7d20162f41edcf8..5d8feb8e48a31f22727c3fc5cd8e6dfe55fda9c1 100644
--- a/intern/ghost/intern/GHOST_XrContext.cpp
+++ b/intern/ghost/intern/GHOST_XrContext.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_XrContext.h b/intern/ghost/intern/GHOST_XrContext.h
index b00f017ff598aa9bfd2b96f22a34ddbb2a8a1903..6eac4284e43c2f1e85c767c14898822144d39c7a 100644
--- a/intern/ghost/intern/GHOST_XrContext.h
+++ b/intern/ghost/intern/GHOST_XrContext.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_XrControllerModel.cpp b/intern/ghost/intern/GHOST_XrControllerModel.cpp
index aa46aaaf89ad7389b7e140d3e3365fda256f0f47..78d81651e925cc460daf4c6874cdb837153cc4f0 100644
--- a/intern/ghost/intern/GHOST_XrControllerModel.cpp
+++ b/intern/ghost/intern/GHOST_XrControllerModel.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_XrControllerModel.h b/intern/ghost/intern/GHOST_XrControllerModel.h
index a9aed96171372c69a4ba90bb8465197f9d4400c1..9f90408e62bc20173214238542427243f92535ee 100644
--- a/intern/ghost/intern/GHOST_XrControllerModel.h
+++ b/intern/ghost/intern/GHOST_XrControllerModel.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_XrEvent.cpp b/intern/ghost/intern/GHOST_XrEvent.cpp
index 992f89fadebeb1ff88d61145d1a2a6c54024b961..8a251439128abfc1ac1a3fc136ae11d8d4665997 100644
--- a/intern/ghost/intern/GHOST_XrEvent.cpp
+++ b/intern/ghost/intern/GHOST_XrEvent.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_XrException.h b/intern/ghost/intern/GHOST_XrException.h
index e93164e04c85494780fe65bbb97c6973c97a5ee1..837f005a416da62de2638c1dcbea408d694e5317 100644
--- a/intern/ghost/intern/GHOST_XrException.h
+++ b/intern/ghost/intern/GHOST_XrException.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_XrGraphicsBinding.cpp b/intern/ghost/intern/GHOST_XrGraphicsBinding.cpp
index 936b973c97e8e303a19764ffd85d061cf799fd91..973f1b30b0940f81c97b45476f48288257d4965e 100644
--- a/intern/ghost/intern/GHOST_XrGraphicsBinding.cpp
+++ b/intern/ghost/intern/GHOST_XrGraphicsBinding.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_XrSession.cpp b/intern/ghost/intern/GHOST_XrSession.cpp
index c68cb5992e38074c29b6b50dc3a0386e7200286e..1966a4e77da627c3124830f60e6e1c2ae61e58f0 100644
--- a/intern/ghost/intern/GHOST_XrSession.cpp
+++ b/intern/ghost/intern/GHOST_XrSession.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_XrSession.h b/intern/ghost/intern/GHOST_XrSession.h
index f5c0c04e65d70e97f55350e6aa01ab594c6f245f..5e0cdbbc1fc57d7f14796ce8a25d0299836dfeb2 100644
--- a/intern/ghost/intern/GHOST_XrSession.h
+++ b/intern/ghost/intern/GHOST_XrSession.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_XrSwapchain.cpp b/intern/ghost/intern/GHOST_XrSwapchain.cpp
index f89b7227ab1234d9b6d9b6293b5350c7ec3abddc..8f4514954f072737ced5718c738325b87f44fda8 100644
--- a/intern/ghost/intern/GHOST_XrSwapchain.cpp
+++ b/intern/ghost/intern/GHOST_XrSwapchain.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_XrSwapchain.h b/intern/ghost/intern/GHOST_XrSwapchain.h
index 0c6592e2db6a5661bc446d327b6cdd95a0098fde..982c069357808167528bb00e9aa73eb8f0326d2d 100644
--- a/intern/ghost/intern/GHOST_XrSwapchain.h
+++ b/intern/ghost/intern/GHOST_XrSwapchain.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Xr_intern.h b/intern/ghost/intern/GHOST_Xr_intern.h
index 0616e426da3608b5b752f9ed575c53e51b552d9f..8c542762b912c628c5ca677aa2cf5ca4ce826218 100644
--- a/intern/ghost/intern/GHOST_Xr_intern.h
+++ b/intern/ghost/intern/GHOST_Xr_intern.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/intern/GHOST_Xr_openxr_includes.h b/intern/ghost/intern/GHOST_Xr_openxr_includes.h
index d6d7cad866cb9ffb102489c12a919b82e71a6f73..9706f51c0274d8f8150774bc5d513a49db6f38a8 100644
--- a/intern/ghost/intern/GHOST_Xr_openxr_includes.h
+++ b/intern/ghost/intern/GHOST_Xr_openxr_includes.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup GHOST
diff --git a/intern/ghost/test/gears/GHOST_C-Test.c b/intern/ghost/test/gears/GHOST_C-Test.c
index 3257c42118e1180a4fa9a16854dd3e3dbb01c0a5..71f3a6f43b4d2c438decd0f2637d1baf3dfe052e 100644
--- a/intern/ghost/test/gears/GHOST_C-Test.c
+++ b/intern/ghost/test/gears/GHOST_C-Test.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /**
  * Copyright (C) 2001 NaN Technologies B.V.
diff --git a/intern/ghost/test/gears/GHOST_Test.cpp b/intern/ghost/test/gears/GHOST_Test.cpp
index c1cb5f29e2e554ac166037782135e50169cf5f14..5a43543d1633711b35f45c608dc9137e08b1a6a5 100644
--- a/intern/ghost/test/gears/GHOST_Test.cpp
+++ b/intern/ghost/test/gears/GHOST_Test.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /**
  * Copyright (C) 2001 NaN Technologies B.V.
diff --git a/intern/ghost/test/multitest/Basic.c b/intern/ghost/test/multitest/Basic.c
index 670c7583fe547bbaeb828178c9f8a865f2d3d53a..25dde15b416c81ca8c6e3e5f5453d063a7280ac7 100644
--- a/intern/ghost/test/multitest/Basic.c
+++ b/intern/ghost/test/multitest/Basic.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #include "Basic.h"
 
diff --git a/intern/ghost/test/multitest/Basic.h b/intern/ghost/test/multitest/Basic.h
index 1557be8433eda06ff7038844b0e37ff7866a9c31..b36819128fde0f1d367b0556232d1427bafdb6a0 100644
--- a/intern/ghost/test/multitest/Basic.h
+++ b/intern/ghost/test/multitest/Basic.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 int min_i(int a, int b);
 
diff --git a/intern/ghost/test/multitest/EventToBuf.c b/intern/ghost/test/multitest/EventToBuf.c
index 44ea07bd88013ceb8fd1983a672c7b340d361a3d..baab32328c3da965438cea52281c70e6fc535de9 100644
--- a/intern/ghost/test/multitest/EventToBuf.c
+++ b/intern/ghost/test/multitest/EventToBuf.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #include <stdlib.h>
 
diff --git a/intern/ghost/test/multitest/EventToBuf.h b/intern/ghost/test/multitest/EventToBuf.h
index 50ee9a4db981dec8c004cb9ef713c8b3d8bf4fa7..42d20beed1ca8ac8819794dc3f94e5352ff25352 100644
--- a/intern/ghost/test/multitest/EventToBuf.h
+++ b/intern/ghost/test/multitest/EventToBuf.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 char *eventtype_to_string(GHOST_TEventType type);
 void event_to_buf(GHOST_EventHandle evt, char buf[128]);
diff --git a/intern/ghost/test/multitest/GL.h b/intern/ghost/test/multitest/GL.h
index 34ac1a40d9e6dfccab720c2269d0b72410a8bd37..abd6032afaadd9963103b0fb08a1a0efbec05f5e 100644
--- a/intern/ghost/test/multitest/GL.h
+++ b/intern/ghost/test/multitest/GL.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #if defined(WIN32) || defined(__APPLE__)
 
diff --git a/intern/ghost/test/multitest/MultiTest.c b/intern/ghost/test/multitest/MultiTest.c
index 0e6602d9510ec9cae256c276828d66cceed5e6fd..35b1de651717022fe302260a7ab06f612e2b3b34 100644
--- a/intern/ghost/test/multitest/MultiTest.c
+++ b/intern/ghost/test/multitest/MultiTest.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /* Developers Note:
  *
diff --git a/intern/ghost/test/multitest/ScrollBar.c b/intern/ghost/test/multitest/ScrollBar.c
index f14e726a077fd0e651203df2f40ba53dec2f8997..6247165afb64dbded4a95926ec0c84f5a6a92876 100644
--- a/intern/ghost/test/multitest/ScrollBar.c
+++ b/intern/ghost/test/multitest/ScrollBar.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #include <stdlib.h>
 
diff --git a/intern/ghost/test/multitest/ScrollBar.h b/intern/ghost/test/multitest/ScrollBar.h
index 7108f9ce2df9be5c5b2085cb742bb90e2462b36f..1bd7a3d63c0db47e64248767baad81809cf2222c 100644
--- a/intern/ghost/test/multitest/ScrollBar.h
+++ b/intern/ghost/test/multitest/ScrollBar.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 typedef struct _ScrollBar ScrollBar;
 
diff --git a/intern/ghost/test/multitest/Util.c b/intern/ghost/test/multitest/Util.c
index 962dd88c47b284f95d33f755738d3f62d2707bd4..a9b8f1841ce402de548d9858ade204de13843fdc 100644
--- a/intern/ghost/test/multitest/Util.c
+++ b/intern/ghost/test/multitest/Util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #include <stdlib.h>
 
diff --git a/intern/ghost/test/multitest/Util.h b/intern/ghost/test/multitest/Util.h
index 24f963a6d8918a13404a92bc88fd82ed936f7dea..c02680ac3e1c7b2dc313a28c0ea40daae3f8d074 100644
--- a/intern/ghost/test/multitest/Util.h
+++ b/intern/ghost/test/multitest/Util.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 void *memdbl(void *mem, int *size_pr, int item_size);
 
diff --git a/intern/ghost/test/multitest/WindowData.c b/intern/ghost/test/multitest/WindowData.c
index 7d3cbec43f3d1c9f81416a29cce023656b04a9eb..abdbe4c97d30febda2e32d28f2974b767e876fe0 100644
--- a/intern/ghost/test/multitest/WindowData.c
+++ b/intern/ghost/test/multitest/WindowData.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #include <stdlib.h>
 
diff --git a/intern/ghost/test/multitest/WindowData.h b/intern/ghost/test/multitest/WindowData.h
index 9d39377bb0acfb454f8856367396684129998327..8d75dad5b1d4a5d73101628e744a1b47de0594d7 100644
--- a/intern/ghost/test/multitest/WindowData.h
+++ b/intern/ghost/test/multitest/WindowData.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 typedef void (*WindowDataHandler)(void *priv, GHOST_EventHandle evt);
 typedef struct _WindowData WindowData;
diff --git a/intern/ghost/test/multitest/stubs.c b/intern/ghost/test/multitest/stubs.c
index 611c98cd004efab35d5b4d5e1f0083d2f91f9ae1..7261c1fe2a18d4834311ccb0a7a5b9e5032d8ecf 100644
--- a/intern/ghost/test/multitest/stubs.c
+++ b/intern/ghost/test/multitest/stubs.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 #include <stdlib.h>
 
diff --git a/intern/glew-mx/CMakeLists.txt b/intern/glew-mx/CMakeLists.txt
index 51e5c8b8990b90a2647a8eae363355c1ada4906f..49e9762672f31c6a793340a4b0a274acbe15ef8c 100644
--- a/intern/glew-mx/CMakeLists.txt
+++ b/intern/glew-mx/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2014, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2014 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/glew-mx/glew-mx.h b/intern/glew-mx/glew-mx.h
index 5977fddb387e630400d90075e348fc0a61435398..e7972697010f106c6fb61fe3f45e97e9113cd5ef 100644
--- a/intern/glew-mx/glew-mx.h
+++ b/intern/glew-mx/glew-mx.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_glew-mx
diff --git a/intern/glew-mx/intern/gl-deprecated.h b/intern/glew-mx/intern/gl-deprecated.h
index b07c865993ea2df2b2559520102d71e7b18f8287..762699d74d23b888a87b248bca0c906e2c2a8465 100644
--- a/intern/glew-mx/intern/gl-deprecated.h
+++ b/intern/glew-mx/intern/gl-deprecated.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_glew-mx
diff --git a/intern/glew-mx/intern/glew-mx.c b/intern/glew-mx/intern/glew-mx.c
index 7e176ff2a76df4615762a886883a9f76197946a5..c6992c8ae25acf6d55f06b63782db90e2926f77c 100644
--- a/intern/glew-mx/intern/glew-mx.c
+++ b/intern/glew-mx/intern/glew-mx.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_glew-mx
diff --git a/intern/glew-mx/intern/symbol-binding.h b/intern/glew-mx/intern/symbol-binding.h
index e65752efed4d98d09c408551603b6f30e7eb1c8b..b7993993739ceb445b85665af909d366d48c2792 100644
--- a/intern/glew-mx/intern/symbol-binding.h
+++ b/intern/glew-mx/intern/symbol-binding.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_glew-mx
diff --git a/intern/guardedalloc/CMakeLists.txt b/intern/guardedalloc/CMakeLists.txt
index 88c6e7ca2c5f0a8f7bdf5561dbe8b45adfa6102c..3329e4bf10e7e0dc8e7aa4f98ae3701dc7b594bd 100644
--- a/intern/guardedalloc/CMakeLists.txt
+++ b/intern/guardedalloc/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/guardedalloc/MEM_guardedalloc.h b/intern/guardedalloc/MEM_guardedalloc.h
index dccb7a321395c09d65bffda0b50e6c96ffe0fc72..d8a8c1181e43598a238b6f7d6bb72aa5cf0551f6 100644
--- a/intern/guardedalloc/MEM_guardedalloc.h
+++ b/intern/guardedalloc/MEM_guardedalloc.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/cpp/mallocn.cpp b/intern/guardedalloc/cpp/mallocn.cpp
index dadaea12cfe19c5922ae2183bd9b0a4998f806b5..05fbf0bf51a75860d5e65f498f02c1d02241ba49 100644
--- a/intern/guardedalloc/cpp/mallocn.cpp
+++ b/intern/guardedalloc/cpp/mallocn.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/intern/leak_detector.cc b/intern/guardedalloc/intern/leak_detector.cc
index 072b68fcc9f7fbde485ee31ad5bb747f24497e6f..48df71e410da6f2d921865d22d42aed8ddffdfe1 100644
--- a/intern/guardedalloc/intern/leak_detector.cc
+++ b/intern/guardedalloc/intern/leak_detector.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/intern/mallocn.c b/intern/guardedalloc/intern/mallocn.c
index c7b12ed3457438c33f2479b489ce122152e2fe89..f797916879989edbcaddd0c131f648c22691a384 100644
--- a/intern/guardedalloc/intern/mallocn.c
+++ b/intern/guardedalloc/intern/mallocn.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/intern/mallocn_guarded_impl.c b/intern/guardedalloc/intern/mallocn_guarded_impl.c
index 2720a9762bbd9b7762c61143c5d5f3d2bdeac975..acad413b4c1eee46be2a83addd3f5b3f4bbcde1e 100644
--- a/intern/guardedalloc/intern/mallocn_guarded_impl.c
+++ b/intern/guardedalloc/intern/mallocn_guarded_impl.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/intern/mallocn_intern.h b/intern/guardedalloc/intern/mallocn_intern.h
index b57e11d9a8f0114d6086a8031bc105f07457e387..f8b16ff6ddffbbe03c6e72ea42d3ec9c6f2484d7 100644
--- a/intern/guardedalloc/intern/mallocn_intern.h
+++ b/intern/guardedalloc/intern/mallocn_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/intern/mallocn_lockfree_impl.c b/intern/guardedalloc/intern/mallocn_lockfree_impl.c
index 5d522f4da886aaef5b91e3083200ea18780eb1f2..73912ad07b1f0555ad7f4ee4e0ada6aad766ad1b 100644
--- a/intern/guardedalloc/intern/mallocn_lockfree_impl.c
+++ b/intern/guardedalloc/intern/mallocn_lockfree_impl.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/test/simpletest/memtest.c b/intern/guardedalloc/test/simpletest/memtest.c
index 498857de8ea3f85aca34c76838193574db32875e..dd17e88dbc14bb2099726c934ee9bfc49dd55dea 100644
--- a/intern/guardedalloc/test/simpletest/memtest.c
+++ b/intern/guardedalloc/test/simpletest/memtest.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /**
  * Copyright (C) 2001 NaN Technologies B.V.
diff --git a/intern/guardedalloc/tests/guardedalloc_alignment_test.cc b/intern/guardedalloc/tests/guardedalloc_alignment_test.cc
index cd19a43695cdd56c2c9f65de6cb87e29a6b7312e..ceda01c2fba528817d91eed05379cf388471139b 100644
--- a/intern/guardedalloc/tests/guardedalloc_alignment_test.cc
+++ b/intern/guardedalloc/tests/guardedalloc_alignment_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/intern/guardedalloc/tests/guardedalloc_overflow_test.cc b/intern/guardedalloc/tests/guardedalloc_overflow_test.cc
index 1424005e181889a2a42bf545b693b70c6e19f3fd..aa930373f0cd090431ccb11c85e5078ac40cfd7c 100644
--- a/intern/guardedalloc/tests/guardedalloc_overflow_test.cc
+++ b/intern/guardedalloc/tests/guardedalloc_overflow_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/intern/guardedalloc/tests/guardedalloc_test_base.h b/intern/guardedalloc/tests/guardedalloc_test_base.h
index c56cb9abe2975dde4458de0fc9cee421951f8f2b..14fc693b9da76fdcfd4874d0a906442bef3600e2 100644
--- a/intern/guardedalloc/tests/guardedalloc_test_base.h
+++ b/intern/guardedalloc/tests/guardedalloc_test_base.h
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #ifndef __GUARDEDALLOC_TEST_UTIL_H__
 #define __GUARDEDALLOC_TEST_UTIL_H__
diff --git a/intern/iksolver/CMakeLists.txt b/intern/iksolver/CMakeLists.txt
index a7a346ccddd4d373f70fc90ca74546a13201bf22..3954cd5a343388c2684162d1373d8d8a37171b9e 100644
--- a/intern/iksolver/CMakeLists.txt
+++ b/intern/iksolver/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   intern
diff --git a/intern/iksolver/extern/IK_solver.h b/intern/iksolver/extern/IK_solver.h
index 302ed1545b44dd2be2930631b947b5d06e9336b0..662ef3c117796772faa4165748029f96ec4ad83a 100644
--- a/intern/iksolver/extern/IK_solver.h
+++ b/intern/iksolver/extern/IK_solver.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_iksolver
diff --git a/intern/iksolver/intern/IK_Math.h b/intern/iksolver/intern/IK_Math.h
index 6a284df51f4357f89b4f6f3bc55e90cb5bebeee5..90b210bd46ea20261c0bf6bfb3caf4936bbc049e 100644
--- a/intern/iksolver/intern/IK_Math.h
+++ b/intern/iksolver/intern/IK_Math.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_iksolver
diff --git a/intern/iksolver/intern/IK_QJacobian.cpp b/intern/iksolver/intern/IK_QJacobian.cpp
index 7e4d48e37c90b71181db94d358aafbbbe4cc94f1..39c0e6eb348a2249ea4a712977719c1b0eff395f 100644
--- a/intern/iksolver/intern/IK_QJacobian.cpp
+++ b/intern/iksolver/intern/IK_QJacobian.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_iksolver
diff --git a/intern/iksolver/intern/IK_QJacobian.h b/intern/iksolver/intern/IK_QJacobian.h
index ed2d41368ad98e2e8ee4d4de6878e41d50e34418..aa6103ca03a5a7267fa863a6c612672f96b842cb 100644
--- a/intern/iksolver/intern/IK_QJacobian.h
+++ b/intern/iksolver/intern/IK_QJacobian.h
@@ -1,22 +1,6 @@
 
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_iksolver
diff --git a/intern/iksolver/intern/IK_QJacobianSolver.cpp b/intern/iksolver/intern/IK_QJacobianSolver.cpp
index efbf271c4b23aae384d47654c9ce6ca4b70aeeec..0758cf317a5e715e56e8fdc6925fc4c9b7e676fd 100644
--- a/intern/iksolver/intern/IK_QJacobianSolver.cpp
+++ b/intern/iksolver/intern/IK_QJacobianSolver.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_iksolver
diff --git a/intern/iksolver/intern/IK_QJacobianSolver.h b/intern/iksolver/intern/IK_QJacobianSolver.h
index 0c8ef661129e212e9d8d3558d540d7e50384701c..11b8a8ee99cd5a644b30ef5553b8e53a8baca06c 100644
--- a/intern/iksolver/intern/IK_QJacobianSolver.h
+++ b/intern/iksolver/intern/IK_QJacobianSolver.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_iksolver
diff --git a/intern/iksolver/intern/IK_QSegment.cpp b/intern/iksolver/intern/IK_QSegment.cpp
index 544d68e99cad89e573e7f7a1fd8dbc794fb159c4..84c1b0619ebc29bec2591b1222b610aecf306877 100644
--- a/intern/iksolver/intern/IK_QSegment.cpp
+++ b/intern/iksolver/intern/IK_QSegment.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_iksolver
diff --git a/intern/iksolver/intern/IK_QSegment.h b/intern/iksolver/intern/IK_QSegment.h
index 4abb94ec4f7f1c8bf79b4967c43ebfe87494b3e4..afb85321d70fdebd53cf8d8cb29e21e238a74e70 100644
--- a/intern/iksolver/intern/IK_QSegment.h
+++ b/intern/iksolver/intern/IK_QSegment.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_iksolver
diff --git a/intern/iksolver/intern/IK_QTask.cpp b/intern/iksolver/intern/IK_QTask.cpp
index 30fef1ff670e88e581679d5a3e7304ba55d9a3de..caf9585a94ebad327d854dbebdf213683d934840 100644
--- a/intern/iksolver/intern/IK_QTask.cpp
+++ b/intern/iksolver/intern/IK_QTask.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_iksolver
diff --git a/intern/iksolver/intern/IK_QTask.h b/intern/iksolver/intern/IK_QTask.h
index c0f1672ef80d7876ce0dbf4d088813cc8f05003d..7a68a8d3cc0ed730056d2219d101058a20f9d021 100644
--- a/intern/iksolver/intern/IK_QTask.h
+++ b/intern/iksolver/intern/IK_QTask.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_iksolver
diff --git a/intern/iksolver/intern/IK_Solver.cpp b/intern/iksolver/intern/IK_Solver.cpp
index 368546d7cefba7bc3c61418e520c265dab89733f..3aea4422d410ebc7e4d55978a2eb93d27d7f8b2c 100644
--- a/intern/iksolver/intern/IK_Solver.cpp
+++ b/intern/iksolver/intern/IK_Solver.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_iksolver
diff --git a/intern/itasc/CMakeLists.txt b/intern/itasc/CMakeLists.txt
index 060e5378fc4fd370b90392ba722d97b0647233b6..34e4eaa0efb3b36b0b286ec5f1e3a3b523affbec 100644
--- a/intern/itasc/CMakeLists.txt
+++ b/intern/itasc/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 remove_strict_flags()
 set(INC
 
diff --git a/intern/libc_compat/CMakeLists.txt b/intern/libc_compat/CMakeLists.txt
index f8fede5673befc5e4a101fc002be39e52fc54155..c318b3a303bebe62328564b1120e8c0cb20a2040 100644
--- a/intern/libc_compat/CMakeLists.txt
+++ b/intern/libc_compat/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2015, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2015 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/libc_compat/libc_compat.c b/intern/libc_compat/libc_compat.c
index 0bf228794224fd46769f753e9fa9292416e05d34..85a6b4398936658e2dd25274f78b524d01674087 100644
--- a/intern/libc_compat/libc_compat.c
+++ b/intern/libc_compat/libc_compat.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /* On Linux, precompiled libraries may be made with an glibc version that is
  * incompatible with the system libraries that Blender is built on. To solve
diff --git a/intern/libmv/CMakeLists.txt b/intern/libmv/CMakeLists.txt
index cd5565fbe162d07bdbc9792e41f610cf860d8712..f9fef9f7a29669695ffec1db7324a4b1b8867af9 100644
--- a/intern/libmv/CMakeLists.txt
+++ b/intern/libmv/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2011, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2011 Blender Foundation. All rights reserved.
 
 # NOTE: This file is automatically generated by bundle.sh script
 #       If you're doing changes in this file, please update template
diff --git a/intern/libmv/intern/autotrack.cc b/intern/libmv/intern/autotrack.cc
index b7110957b1593ba172cd6eba8ab2870224d3cab4..ead975a51b8f23b37bf637b73918417d0d6c2bd7 100644
--- a/intern/libmv/intern/autotrack.cc
+++ b/intern/libmv/intern/autotrack.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 #include "intern/autotrack.h"
 #include "intern/tracksN.h"
diff --git a/intern/libmv/intern/autotrack.h b/intern/libmv/intern/autotrack.h
index 3887983814b39d99b30c523b76333d46251c73c0..d894ca93726370522e24db8e9ec5baaacba4cbd4 100644
--- a/intern/libmv/intern/autotrack.h
+++ b/intern/libmv/intern/autotrack.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 #ifndef LIBMV_C_API_AUTOTRACK_H_
 #define LIBMV_C_API_AUTOTRACK_H_
diff --git a/intern/libmv/intern/camera_intrinsics.cc b/intern/libmv/intern/camera_intrinsics.cc
index 243b26d9fb35428e67a137d3d3ad3642d077cc75..56a349e9ac324e38f0789600264e4ae5c0acb7de 100644
--- a/intern/libmv/intern/camera_intrinsics.cc
+++ b/intern/libmv/intern/camera_intrinsics.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #include "intern/camera_intrinsics.h"
 #include "intern/utildefines.h"
diff --git a/intern/libmv/intern/camera_intrinsics.h b/intern/libmv/intern/camera_intrinsics.h
index 8a65c93e6a4a049c5d48b764c831e5768685c525..4483792a8cff0f45418cbf7820a4fa30eb346cea 100644
--- a/intern/libmv/intern/camera_intrinsics.h
+++ b/intern/libmv/intern/camera_intrinsics.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #ifndef LIBMV_C_API_CAMERA_INTRINSICS_H_
 #define LIBMV_C_API_CAMERA_INTRINSICS_H_
diff --git a/intern/libmv/intern/detector.cc b/intern/libmv/intern/detector.cc
index 21f5b46595c8358a2b50cec8bfec9d91644d9931..ec0ecfc79fce84b154ccfd215160dd0e759eab07 100644
--- a/intern/libmv/intern/detector.cc
+++ b/intern/libmv/intern/detector.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #include "intern/detector.h"
 #include "intern/image.h"
diff --git a/intern/libmv/intern/detector.h b/intern/libmv/intern/detector.h
index f21e78d7f2bdb19b3db610faf6f2515544b46e0c..78b36d1920565dcbe1eb71b8f8c1935fa26f0d59 100644
--- a/intern/libmv/intern/detector.h
+++ b/intern/libmv/intern/detector.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #ifndef LIBMV_C_API_DETECTOR_H_
 #define LIBMV_C_API_DETECTOR_H_
diff --git a/intern/libmv/intern/frame_accessor.cc b/intern/libmv/intern/frame_accessor.cc
index 3a6c753cc8db38d254f06aeff182e66e4a4d47ff..6dac59fde2e0564a9301e7391a6c80b718439ecc 100644
--- a/intern/libmv/intern/frame_accessor.cc
+++ b/intern/libmv/intern/frame_accessor.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 #include "intern/frame_accessor.h"
 #include "intern/image.h"
diff --git a/intern/libmv/intern/frame_accessor.h b/intern/libmv/intern/frame_accessor.h
index 39a3bc5eb1d1265a1b07be004432ed930b4eea20..8dcb9d08004e3564531b9ef8ec43bb1096f73f57 100644
--- a/intern/libmv/intern/frame_accessor.h
+++ b/intern/libmv/intern/frame_accessor.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 #ifndef LIBMV_C_API_FRAME_ACCESSOR_H_
 #define LIBMV_C_API_FRAME_ACCESSOR_H_
diff --git a/intern/libmv/intern/homography.cc b/intern/libmv/intern/homography.cc
index dc1009b5636d390388c33ae94e29d33f844edc80..5c8761b3949610e4a86cdb7575a2e058d744c52d 100644
--- a/intern/libmv/intern/homography.cc
+++ b/intern/libmv/intern/homography.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #include "intern/homography.h"
 #include "intern/utildefines.h"
diff --git a/intern/libmv/intern/homography.h b/intern/libmv/intern/homography.h
index bc758b1e63cd661e5eae16447eb890784577c7fd..bbff480a3aa9a55130fe8742d9cd643510b22624 100644
--- a/intern/libmv/intern/homography.h
+++ b/intern/libmv/intern/homography.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #ifndef LIBMV_C_API_HOMOGRAPHY_H_
 #define LIBMV_C_API_HOMOGRAPHY_H_
diff --git a/intern/libmv/intern/image.cc b/intern/libmv/intern/image.cc
index 564e4762448ab1ee30b001407c724b178cb2800f..c3e93fec8df5ee195d25e989a1c6866752821e50 100644
--- a/intern/libmv/intern/image.cc
+++ b/intern/libmv/intern/image.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #include "intern/image.h"
 #include "intern/utildefines.h"
diff --git a/intern/libmv/intern/image.h b/intern/libmv/intern/image.h
index 02cef86a12730d019fa551443db38a393eb272f7..6c96baad6f411a2d073caf6240d45fc88cc2455b 100644
--- a/intern/libmv/intern/image.h
+++ b/intern/libmv/intern/image.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #ifndef LIBMV_IMAGE_H_
 #define LIBMV_IMAGE_H_
diff --git a/intern/libmv/intern/logging.cc b/intern/libmv/intern/logging.cc
index a8c7e93880dbea859cb726778803435b73657a33..208d3fdd6af6de377a46637d41c7ec00e3daed10 100644
--- a/intern/libmv/intern/logging.cc
+++ b/intern/libmv/intern/logging.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #include <gflags/gflags.h>
 
diff --git a/intern/libmv/intern/logging.h b/intern/libmv/intern/logging.h
index 01d159b3fc6c147546b7e3f153ae82b9c021b5ab..41373da96dfc0830951162aa61a3e49dd2c70502 100644
--- a/intern/libmv/intern/logging.h
+++ b/intern/libmv/intern/logging.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #ifndef LIBMV_C_API_LOGGING_H_
 #define LIBMV_C_API_LOGGING_H_
diff --git a/intern/libmv/intern/reconstruction.cc b/intern/libmv/intern/reconstruction.cc
index 430607461dad3686edf2234327ff6dac709b7e51..9b361ca567399449ae3e54e55ff9184f3a47fe36 100644
--- a/intern/libmv/intern/reconstruction.cc
+++ b/intern/libmv/intern/reconstruction.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #include "intern/reconstruction.h"
 #include "intern/camera_intrinsics.h"
diff --git a/intern/libmv/intern/reconstruction.h b/intern/libmv/intern/reconstruction.h
index 600bc92ccfc4d250cda7772101f29da8c6bc211a..c028963ab7a0fb6e5fbf594f3c3330a9cee962f3 100644
--- a/intern/libmv/intern/reconstruction.h
+++ b/intern/libmv/intern/reconstruction.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #ifndef LIBMV_C_API_RECONSTRUCTION_H_
 #define LIBMV_C_API_RECONSTRUCTION_H_
diff --git a/intern/libmv/intern/region.h b/intern/libmv/intern/region.h
index db8f877fc899714085cfd14b57e644e4d4b96fef..47056b2fef6d24ffad15eb3181c1b452729b123f 100644
--- a/intern/libmv/intern/region.h
+++ b/intern/libmv/intern/region.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 #ifndef LIBMV_C_API_REGION_H_
 #define LIBMV_C_API_REGION_H_
diff --git a/intern/libmv/intern/stub.cc b/intern/libmv/intern/stub.cc
index 1920042b4ecfa81e6e6ad97221dddd93ef14962a..3876a62c471d0fb39218c8524264f5ce91bfde59 100644
--- a/intern/libmv/intern/stub.cc
+++ b/intern/libmv/intern/stub.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 #include "libmv-capi.h"
 
diff --git a/intern/libmv/intern/track_region.cc b/intern/libmv/intern/track_region.cc
index f434906407b6bffa6990d2cdd5b80b0bf7bce66f..dd045a42617f0a6c93e2e4ff3f0f8dd724c71f26 100644
--- a/intern/libmv/intern/track_region.cc
+++ b/intern/libmv/intern/track_region.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #include "intern/track_region.h"
 #include "intern/image.h"
diff --git a/intern/libmv/intern/track_region.h b/intern/libmv/intern/track_region.h
index 2f10105ccd58ed459571816ffcaf78e83a5b29be..17ad956237232b5c968441b7b7ff97e109a66a77 100644
--- a/intern/libmv/intern/track_region.h
+++ b/intern/libmv/intern/track_region.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #ifndef LIBMV_C_API_TRACK_REGION_H_
 #define LIBMV_C_API_TRACK_REGION_H_
diff --git a/intern/libmv/intern/tracks.cc b/intern/libmv/intern/tracks.cc
index 146908d6db50e851b85ba7a3d3f66e97d6699b92..1ea713d5667fecb7aab4f09cfeb625d04f7edbcb 100644
--- a/intern/libmv/intern/tracks.cc
+++ b/intern/libmv/intern/tracks.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #include "intern/tracks.h"
 #include "intern/utildefines.h"
diff --git a/intern/libmv/intern/tracks.h b/intern/libmv/intern/tracks.h
index aac17175dc2dbe26420ea168400a75672c1da484..39f23da0633b372b9ed4c19d0d5db197d52e456e 100644
--- a/intern/libmv/intern/tracks.h
+++ b/intern/libmv/intern/tracks.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #ifndef LIBMV_C_API_TRACKS_H_
 #define LIBMV_C_API_TRACKS_H_
diff --git a/intern/libmv/intern/tracksN.cc b/intern/libmv/intern/tracksN.cc
index c7ffb13a386bdea3162a7c75eb3d43f580398b66..14dade3fc1ecdb3872db1bd3a5ea3b95792377ea 100644
--- a/intern/libmv/intern/tracksN.cc
+++ b/intern/libmv/intern/tracksN.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #include "intern/tracksN.h"
 #include "intern/utildefines.h"
diff --git a/intern/libmv/intern/tracksN.h b/intern/libmv/intern/tracksN.h
index b5d1f9753e0f4f0a744c63fab69efc234e7076d0..6d1613911fa477372106ffe3f51c959f045dd821 100644
--- a/intern/libmv/intern/tracksN.h
+++ b/intern/libmv/intern/tracksN.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 // TODO(serrgey): For the time being we're converting simple pipeline
 // to an autotrack pipeline we call it tracks.
diff --git a/intern/libmv/intern/utildefines.h b/intern/libmv/intern/utildefines.h
index 8b37253698d48869256ae3eb344f6c2c31847e9f..0bdcdfba9ccc6e0c08edf84068ed0598e9f41c16 100644
--- a/intern/libmv/intern/utildefines.h
+++ b/intern/libmv/intern/utildefines.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 #ifndef LIBMV_C_API_UTILDEFINES_H_
 #define LIBMV_C_API_UTILDEFINES_H_
diff --git a/intern/libmv/libmv-capi.h b/intern/libmv/libmv-capi.h
index 297dc836bf9897fd2d186d121dc029aac9d041ce..0fbd567f12ba1833d825bc0861660c0be73c7074 100644
--- a/intern/libmv/libmv-capi.h
+++ b/intern/libmv/libmv-capi.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #ifndef LIBMV_C_API_H
 #define LIBMV_C_API_H
diff --git a/intern/locale/CMakeLists.txt b/intern/locale/CMakeLists.txt
index 3e467302d8e0c5f8e042cf504a9e624cadb468ec..8e3620d7db383d75536f9b0f0daf98feef481f22 100644
--- a/intern/locale/CMakeLists.txt
+++ b/intern/locale/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2012, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2012 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/locale/boost_locale_wrapper.cpp b/intern/locale/boost_locale_wrapper.cpp
index 873ebca6873e612e2a9a8b73e593efef16b4ab50..fb0e194352a74f098d521f393e05c78527166596 100644
--- a/intern/locale/boost_locale_wrapper.cpp
+++ b/intern/locale/boost_locale_wrapper.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012, Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_locale
diff --git a/intern/locale/boost_locale_wrapper.h b/intern/locale/boost_locale_wrapper.h
index 8eb51735fe5c2fa5500c27da0260b536364b1f3d..cf6afcdfd038f9f6286b9952752580037c330902 100644
--- a/intern/locale/boost_locale_wrapper.h
+++ b/intern/locale/boost_locale_wrapper.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012, Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_locale
diff --git a/intern/mantaflow/CMakeLists.txt b/intern/mantaflow/CMakeLists.txt
index 73bcc017c8360ed72577ca45443d819d4dabb286..60ca19c35ffe1756e5f56a26c4aa96ef0e66156b 100644
--- a/intern/mantaflow/CMakeLists.txt
+++ b/intern/mantaflow/CMakeLists.txt
@@ -1,27 +1,7 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2019, Blender Foundation
-# All rights reserved.
-#
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2019 Blender Foundation. All rights reserved.
 # The Original Code is: all of this file.
-#
-# Contributor(s): Sebastian Barschkis (sebbas)
-#
-# ***** END GPL LICENSE BLOCK *****
+# Contributor(s): Sebastian Barschkis (sebbas).
 
 add_definitions(-DWITH_FLUID=1)
 
diff --git a/intern/mantaflow/extern/manta_fluid_API.h b/intern/mantaflow/extern/manta_fluid_API.h
index d59a7bde4262b1e3b0da7b760d49116b23f4a99f..31ead30476f65b132ec7afc0edc77b98699fc8c4 100644
--- a/intern/mantaflow/extern/manta_fluid_API.h
+++ b/intern/mantaflow/extern/manta_fluid_API.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_mantaflow
diff --git a/intern/mantaflow/extern/manta_python_API.h b/intern/mantaflow/extern/manta_python_API.h
index 1d66725946b7e331ab388eb3f539dbf2602f0f52..3c79bb6bf55e945f574a23f58ad72fd558144898 100644
--- a/intern/mantaflow/extern/manta_python_API.h
+++ b/intern/mantaflow/extern/manta_python_API.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_mantaflow
diff --git a/intern/mantaflow/intern/MANTA_main.cpp b/intern/mantaflow/intern/MANTA_main.cpp
index 858e17443d3c8316911a1442a2ad3009232eb1af..6083c4908a1382ec2c5e5e15afd4e24715045c45 100644
--- a/intern/mantaflow/intern/MANTA_main.cpp
+++ b/intern/mantaflow/intern/MANTA_main.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_mantaflow
diff --git a/intern/mantaflow/intern/MANTA_main.h b/intern/mantaflow/intern/MANTA_main.h
index 5514b1c651a6803fa8a3ffcf3b0312c512f5337b..34c2b5231ccbb19cbec383982b366d01b5abb3b0 100644
--- a/intern/mantaflow/intern/MANTA_main.h
+++ b/intern/mantaflow/intern/MANTA_main.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_mantaflow
diff --git a/intern/mantaflow/intern/manta_fluid_API.cpp b/intern/mantaflow/intern/manta_fluid_API.cpp
index 4a096afa9c8ee270207d3a91a4dd95dd864a60b4..d7f4898a4d5fa0c3d51a1772d0e0bbf4eeb74f5a 100644
--- a/intern/mantaflow/intern/manta_fluid_API.cpp
+++ b/intern/mantaflow/intern/manta_fluid_API.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_mantaflow
diff --git a/intern/mantaflow/intern/manta_python_API.cpp b/intern/mantaflow/intern/manta_python_API.cpp
index 977a5b6b7c48bb4f0a949289e9da33316fcc272a..00538b823773dd703c655d40fed5848e9dce0e5c 100644
--- a/intern/mantaflow/intern/manta_python_API.cpp
+++ b/intern/mantaflow/intern/manta_python_API.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_mantaflow
diff --git a/intern/mantaflow/intern/strings/fluid_script.h b/intern/mantaflow/intern/strings/fluid_script.h
index f3a72e69cd35e0868ea654e658409f455cf99a2d..48e0c243e16f7396f2059c66fab8023db45a748a 100644
--- a/intern/mantaflow/intern/strings/fluid_script.h
+++ b/intern/mantaflow/intern/strings/fluid_script.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_mantaflow
diff --git a/intern/mantaflow/intern/strings/liquid_script.h b/intern/mantaflow/intern/strings/liquid_script.h
index 94450653703183596fc3f9d1a87807ea4810cb0d..9ec72a84832da4f892c0dc52be6c12518d8e6d85 100644
--- a/intern/mantaflow/intern/strings/liquid_script.h
+++ b/intern/mantaflow/intern/strings/liquid_script.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_mantaflow
diff --git a/intern/mantaflow/intern/strings/smoke_script.h b/intern/mantaflow/intern/strings/smoke_script.h
index 9a6f6c0a0e014f205012e545469156a7a02697db..abbe2516794ceed26b06d10b14f1ab3e6f8f61d5 100644
--- a/intern/mantaflow/intern/strings/smoke_script.h
+++ b/intern/mantaflow/intern/strings/smoke_script.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_mantaflow
diff --git a/intern/memutil/CMakeLists.txt b/intern/memutil/CMakeLists.txt
index 32a844f06e8137718f4e26966edf1b8510819729..ce4eaaeff5ef1962ae4e3b392a79ca3e7fa32fd0 100644
--- a/intern/memutil/CMakeLists.txt
+++ b/intern/memutil/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/memutil/MEM_Allocator.h b/intern/memutil/MEM_Allocator.h
index 2afe66023ac5d5d6631c7db55feba2c634bf43a5..9182b3358d96937f5f1aed5bf768be4cf03d71df 100644
--- a/intern/memutil/MEM_Allocator.h
+++ b/intern/memutil/MEM_Allocator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_memutil
diff --git a/intern/memutil/MEM_CacheLimiter.h b/intern/memutil/MEM_CacheLimiter.h
index d0e52f8540c8b2e18caadfce738bc9f4d3112175..7153fc4f8578f2b904d835a4c23e267598e5a435 100644
--- a/intern/memutil/MEM_CacheLimiter.h
+++ b/intern/memutil/MEM_CacheLimiter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_memutil
diff --git a/intern/memutil/MEM_CacheLimiterC-Api.h b/intern/memutil/MEM_CacheLimiterC-Api.h
index 9a2e404d9da593ad075edf2893c2874fa15b47c2..589c26abbb83c274e29aa173ab84f314ed327bc2 100644
--- a/intern/memutil/MEM_CacheLimiterC-Api.h
+++ b/intern/memutil/MEM_CacheLimiterC-Api.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_memutil
diff --git a/intern/memutil/MEM_RefCounted.h b/intern/memutil/MEM_RefCounted.h
index 71be4b62f12b9829d7723751ed85d8962531b0c5..42bfea568db43a8cd473b0e9e9ce4f6664b23037 100644
--- a/intern/memutil/MEM_RefCounted.h
+++ b/intern/memutil/MEM_RefCounted.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_memutil
diff --git a/intern/memutil/MEM_RefCountedC-Api.h b/intern/memutil/MEM_RefCountedC-Api.h
index 0e5dd5e0ae3abf5f2607576fd59d2cd30aa2ee69..d198ed799424b3400bb3bac4998aca7f250e09b8 100644
--- a/intern/memutil/MEM_RefCountedC-Api.h
+++ b/intern/memutil/MEM_RefCountedC-Api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_memutil
diff --git a/intern/memutil/intern/MEM_CacheLimiterC-Api.cpp b/intern/memutil/intern/MEM_CacheLimiterC-Api.cpp
index 099c89f2dfeced2d73d2c917f5c274fcf3712094..568b12efd6cc6818f099ffb247dd2653319ce78c 100644
--- a/intern/memutil/intern/MEM_CacheLimiterC-Api.cpp
+++ b/intern/memutil/intern/MEM_CacheLimiterC-Api.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_memutil
diff --git a/intern/memutil/intern/MEM_RefCountedC-Api.cpp b/intern/memutil/intern/MEM_RefCountedC-Api.cpp
index 8a0eebcd5e457ee01edba1d36fbc0c8ca565dbb6..179e5ebdc241b9992416e62d5af2c5f1d3b03ff5 100644
--- a/intern/memutil/intern/MEM_RefCountedC-Api.cpp
+++ b/intern/memutil/intern/MEM_RefCountedC-Api.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_memutil
diff --git a/intern/mikktspace/CMakeLists.txt b/intern/mikktspace/CMakeLists.txt
index 44680b5fc578d3c0a9130de8297353a68dae610a..f968e0b2de48f4d232a52a0043c99ff1f69523a0 100644
--- a/intern/mikktspace/CMakeLists.txt
+++ b/intern/mikktspace/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 if(CMAKE_COMPILER_IS_GNUCC)
   remove_cc_flag(
diff --git a/intern/opencolorio/CMakeLists.txt b/intern/opencolorio/CMakeLists.txt
index 0b46ae471d2191ff1321c197c8f0fbf14960ef48..dfccb9301ac6df8f96b6a3ab8d1933b4e7a8aa5f 100644
--- a/intern/opencolorio/CMakeLists.txt
+++ b/intern/opencolorio/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2012, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2012 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/opencolorio/fallback_impl.cc b/intern/opencolorio/fallback_impl.cc
index 9402a12a71a2772deee619c0db0214b2873a211d..82bd4d9fc36c5604d434b0d115fe087f18a74228 100644
--- a/intern/opencolorio/fallback_impl.cc
+++ b/intern/opencolorio/fallback_impl.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 #include <algorithm>
 #include <cstring>
diff --git a/intern/opencolorio/ocio_capi.cc b/intern/opencolorio/ocio_capi.cc
index f4071edf6e51f676259f641e2f6ba8ad5630ab78..7e7710843e25156897a7f8a8c5aae2d54a234e3e 100644
--- a/intern/opencolorio/ocio_capi.cc
+++ b/intern/opencolorio/ocio_capi.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 #include "MEM_guardedalloc.h"
 
diff --git a/intern/opencolorio/ocio_capi.h b/intern/opencolorio/ocio_capi.h
index 404154064b4530a68557578b270df0fd55a60c55..87a8043aec6ccd820432374025956158fdcd20bc 100644
--- a/intern/opencolorio/ocio_capi.h
+++ b/intern/opencolorio/ocio_capi.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 #ifndef __OCIO_CAPI_H__
 #define __OCIO_CAPI_H__
diff --git a/intern/opencolorio/ocio_impl.cc b/intern/opencolorio/ocio_impl.cc
index b4e48c013c0874ec2fc1bead77c106d5c66bd1d3..11e2a5f73715a8c29075bd0f699a06c29113ad9e 100644
--- a/intern/opencolorio/ocio_impl.cc
+++ b/intern/opencolorio/ocio_impl.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 #include <cassert>
 #include <iostream>
diff --git a/intern/opencolorio/ocio_impl.h b/intern/opencolorio/ocio_impl.h
index 0c759a35e15c75fbc0fda54b910b942a0de0692a..5be1d3aacf8ee1ae8bd460d260f64c19b4fb5441 100644
--- a/intern/opencolorio/ocio_impl.h
+++ b/intern/opencolorio/ocio_impl.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 #ifndef __OCIO_IMPL_H__
 #define __OCIO_IMPL_H__
diff --git a/intern/opensubdiv/CMakeLists.txt b/intern/opensubdiv/CMakeLists.txt
index f141689791f1ccca4b64d68103e64b6a2e8bf82d..38ce9791b5ad7341ce2cdae671993824be5e0fdb 100644
--- a/intern/opensubdiv/CMakeLists.txt
+++ b/intern/opensubdiv/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2013, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2013 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/openvdb/CMakeLists.txt b/intern/openvdb/CMakeLists.txt
index 9d37c6cd24c2d60b8ce56bbf1629fb473b188af1..9f993ebe0ea8ae0a107c89fece7d4fae80f7bb83 100644
--- a/intern/openvdb/CMakeLists.txt
+++ b/intern/openvdb/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2015, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2015 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/openvdb/openvdb_capi.cc b/intern/openvdb/openvdb_capi.cc
index 9c676e33ecc5f7a129e8e3596115ea74ffc88fb6..2627c0d86e2a6efc85844ec76cce2f9c9f8c843e 100644
--- a/intern/openvdb/openvdb_capi.cc
+++ b/intern/openvdb/openvdb_capi.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 #include "openvdb_capi.h"
 #include <openvdb/openvdb.h>
diff --git a/intern/openvdb/openvdb_capi.h b/intern/openvdb/openvdb_capi.h
index 3db1ef9484ba008b265c7cf8d355f4684c21d236..f1962556bf56e384229e4bd59efdd3537be3a74e 100644
--- a/intern/openvdb/openvdb_capi.h
+++ b/intern/openvdb/openvdb_capi.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 #ifndef __OPENVDB_CAPI_H__
 #define __OPENVDB_CAPI_H__
diff --git a/intern/quadriflow/CMakeLists.txt b/intern/quadriflow/CMakeLists.txt
index 457fceb2681834b97b37681a61e7e709687a9d27..9caa80c86ef75cabbd75a2452680800ce422034a 100644
--- a/intern/quadriflow/CMakeLists.txt
+++ b/intern/quadriflow/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2019, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2019 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/quadriflow/quadriflow_capi.cpp b/intern/quadriflow/quadriflow_capi.cpp
index e5e7bd3d94795abb8ca7ea818dfa3fecc548ec0e..4771878200a08df200695ec3765bbf62d1271d7c 100644
--- a/intern/quadriflow/quadriflow_capi.cpp
+++ b/intern/quadriflow/quadriflow_capi.cpp
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019 Blender Foundation. All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 #include <unordered_map>
 
diff --git a/intern/quadriflow/quadriflow_capi.hpp b/intern/quadriflow/quadriflow_capi.hpp
index 927cc7c22a70f7aaac7ea33a078e3e704a0684b5..80939dc9fb2b1fa4d5efe24983db08f769fd8ba3 100644
--- a/intern/quadriflow/quadriflow_capi.hpp
+++ b/intern/quadriflow/quadriflow_capi.hpp
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019 Blender Foundation. All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 #ifndef QUADRIFLOW_CAPI_HPP
 #define QUADRIFLOW_CAPI_HPP
diff --git a/intern/rigidbody/CMakeLists.txt b/intern/rigidbody/CMakeLists.txt
index f619161b630d835fdcf69a50a641a8c1722f41ea..b6911129de4443075b29b0f435911287c76a7e82 100644
--- a/intern/rigidbody/CMakeLists.txt
+++ b/intern/rigidbody/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 add_definitions(-DBT_USE_DOUBLE_PRECISION)
 
diff --git a/intern/rigidbody/RBI_api.h b/intern/rigidbody/RBI_api.h
index c37d4bc661915916c4cdd525f51862c0333cf722..4065240a704500b67f03fdfb69aa037e5417757e 100644
--- a/intern/rigidbody/RBI_api.h
+++ b/intern/rigidbody/RBI_api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation,
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_rigidbody
diff --git a/intern/rigidbody/RBI_hull_api.h b/intern/rigidbody/RBI_hull_api.h
index 01c98f4772ef4d0d82caaa8d0223a00fcf7ccff9..0f982a7ec10197dd8703ecd7c5b4372a6405bd82 100644
--- a/intern/rigidbody/RBI_hull_api.h
+++ b/intern/rigidbody/RBI_hull_api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation,
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_rigidbody
diff --git a/intern/rigidbody/rb_bullet_api.cpp b/intern/rigidbody/rb_bullet_api.cpp
index 57d55939218928f9e7b2ddef8646c5626166998a..88b146384e169149c1cf66a815bb4fe8419da53f 100644
--- a/intern/rigidbody/rb_bullet_api.cpp
+++ b/intern/rigidbody/rb_bullet_api.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_rigidbody
diff --git a/intern/rigidbody/rb_convex_hull_api.cpp b/intern/rigidbody/rb_convex_hull_api.cpp
index 3b80dfdeae90e890ab01aeb2c010d51a37b1fb4c..17743950b5af7619ef328c74351a70456f273b71 100644
--- a/intern/rigidbody/rb_convex_hull_api.cpp
+++ b/intern/rigidbody/rb_convex_hull_api.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation,
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_rigidbody
diff --git a/intern/sky/CMakeLists.txt b/intern/sky/CMakeLists.txt
index f67941605aae0ca5e386d04929bdb4253768178f..45fb64fa16d6d6f736ef22fdf60583179ac16e6b 100644
--- a/intern/sky/CMakeLists.txt
+++ b/intern/sky/CMakeLists.txt
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   include
diff --git a/intern/sky/source/sky_float3.h b/intern/sky/source/sky_float3.h
index 8370d8127ed251298d6c47f01e6856c8a8b14a95..6394871ea0b7f26b1a36585f26e8cc477c8fe2e7 100644
--- a/intern/sky/source/sky_float3.h
+++ b/intern/sky/source/sky_float3.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_sky_modal
diff --git a/intern/sky/source/sky_model.cpp b/intern/sky/source/sky_model.cpp
index 946c230781f2fa076a84fc1b39548cb90955e790..f70a2a7588c0a0a6a592474ec3f3ed0623eb7711 100644
--- a/intern/sky/source/sky_model.cpp
+++ b/intern/sky/source/sky_model.cpp
@@ -1,30 +1,5 @@
-/*
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in the
- *       documentation and/or other materials provided with the distribution.
- *     * None of the names of the contributors may be used to endorse or promote
- *       products derived from this software without specific prior written
- *       permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Copyright (c) 2012-2013, Lukas Hosek and Alexander Wilkie
- * All rights reserved.
- */
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2012-2013 Lukas Hosek and Alexander Wilkie. All rights reserved. */
 
 /* ============================================================================
 
diff --git a/intern/sky/source/sky_model_data.h b/intern/sky/source/sky_model_data.h
index 4626a819d9099a2cfec85a33288a3ca612d505b4..f8398e0839c8a2c3cb4bc6e33e1e5dca2b678cfc 100644
--- a/intern/sky/source/sky_model_data.h
+++ b/intern/sky/source/sky_model_data.h
@@ -1,30 +1,5 @@
-/*
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in the
- *       documentation and/or other materials provided with the distribution.
- *     * None of the names of the contributors may be used to endorse or promote
- *       products derived from this software without specific prior written
- *       permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Copyright (c) 2012-2013, Lukas Hosek and Alexander Wilkie
- * All rights reserved.
- */
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2012-2013 Lukas Hosek and Alexander Wilkie. All rights reserved. */
 
 /* ============================================================================
 
diff --git a/intern/sky/source/sky_nishita.cpp b/intern/sky/source/sky_nishita.cpp
index 236c965fb278003f1ee0ae1c06495a95dd59a67b..f1eab181189d451e1b412a240c67a6fb40bad529 100644
--- a/intern/sky/source/sky_nishita.cpp
+++ b/intern/sky/source/sky_nishita.cpp
@@ -1,18 +1,5 @@
-/*
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * Copyright 2011-2020 Blender Foundation
- */
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright 2011-2020 Blender Foundation. */
 
 /** \file
  * \ingroup intern_sky_modal
diff --git a/intern/utfconv/CMakeLists.txt b/intern/utfconv/CMakeLists.txt
index 1ed3849d53e5782968b6ba96faf7b5a246bc074a..8c20204f3124b955922027123bcfe0a968ff61aa 100644
--- a/intern/utfconv/CMakeLists.txt
+++ b/intern/utfconv/CMakeLists.txt
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/intern/utfconv/utf_winfunc.c b/intern/utfconv/utf_winfunc.c
index 9de2bcab3fc8fcc41557dfe85bbc01ade837efe0..149d57cfcdbb441ed9bc58cac2718f173594e677 100644
--- a/intern/utfconv/utf_winfunc.c
+++ b/intern/utfconv/utf_winfunc.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_utf_conv
diff --git a/intern/utfconv/utf_winfunc.h b/intern/utfconv/utf_winfunc.h
index b6f2ccad219622af998daa9a9afae81c5b687113..73ec473370ec1868c283c22c566d243fd27243c5 100644
--- a/intern/utfconv/utf_winfunc.h
+++ b/intern/utfconv/utf_winfunc.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_utf_conv
diff --git a/intern/utfconv/utfconv.c b/intern/utfconv/utfconv.c
index 673c567070c68cd33fb0daa6a2cd97c9ec7dd508..a9625309a551fea18ac4d2978111401424ba30e4 100644
--- a/intern/utfconv/utfconv.c
+++ b/intern/utfconv/utfconv.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_utf_conv
diff --git a/intern/utfconv/utfconv.h b/intern/utfconv/utfconv.h
index d3f62dfc1a41873a3b50f275f6e974c1cba5d07e..20c0135a63782b02f582c104e3eb4d3c7cff1904 100644
--- a/intern/utfconv/utfconv.h
+++ b/intern/utfconv/utfconv.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_utf_conv
diff --git a/release/datafiles/alert_icons_update.py b/release/datafiles/alert_icons_update.py
index 34a2798a18c025180fc298e8bb3ef57db3506529..c751aa5274e373398daa763b6568b779ce73c1c8 100755
--- a/release/datafiles/alert_icons_update.py
+++ b/release/datafiles/alert_icons_update.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/datafiles/blender_icons_geom.py b/release/datafiles/blender_icons_geom.py
index 82d4f8130628de2fcad1334b7522c781c9d04a16..815bc6d49a48a49a714fc892d2149116ced706a2 100644
--- a/release/datafiles/blender_icons_geom.py
+++ b/release/datafiles/blender_icons_geom.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 """
 Example Usage
diff --git a/release/datafiles/blender_icons_geom_update.py b/release/datafiles/blender_icons_geom_update.py
index 257b7a49285736e40c887f9d4a08d0521aa7d707..c29aa0ed6418ba9927ea754a77f081e2f6ccaef4 100755
--- a/release/datafiles/blender_icons_geom_update.py
+++ b/release/datafiles/blender_icons_geom_update.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/datafiles/blender_icons_update.py b/release/datafiles/blender_icons_update.py
index 524cc512f2963006b2f0934b6a13f38c148167c6..320aff9c2215077b755aabbb0805254fa0bee389 100755
--- a/release/datafiles/blender_icons_update.py
+++ b/release/datafiles/blender_icons_update.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/datafiles/ctodata.py b/release/datafiles/ctodata.py
index 20f119c4264dc33b2d213eab3d92f84b7e20907f..c9a82369d47fb276a79fd364ba86d5d42efe720d 100755
--- a/release/datafiles/ctodata.py
+++ b/release/datafiles/ctodata.py
@@ -1,25 +1,7 @@
 #!/usr/bin/env python3
 
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2009 Blender Foundation.
-# All rights reserved.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2009 Blender Foundation. All rights reserved.
 
 # <pep8 compliant>
 
diff --git a/release/datafiles/prvicons_update.py b/release/datafiles/prvicons_update.py
index ad42ede9772b091c4e5eed3a725c85323e29e16f..7dea39594a75f27a856e40e2e956343528515526 100755
--- a/release/datafiles/prvicons_update.py
+++ b/release/datafiles/prvicons_update.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/datafiles/userdef/userdef_default.c b/release/datafiles/userdef/userdef_default.c
index 94d8c13aa066fa5adc6a98c2998e56c52f9d13d6..34168cc0126c53d1af28c31e2b347df33a524d43 100644
--- a/release/datafiles/userdef/userdef_default.c
+++ b/release/datafiles/userdef/userdef_default.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /* Preferences Data File 'U_default'. */
 
diff --git a/release/scripts/freestyle/modules/freestyle/__init__.py b/release/scripts/freestyle/modules/freestyle/__init__.py
index c3375df5109eb0991b94e85737dee5113e395a7c..f38d3f551ff26e87b1b26517dfe9b57f146cbae5 100644
--- a/release/scripts/freestyle/modules/freestyle/__init__.py
+++ b/release/scripts/freestyle/modules/freestyle/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 """
 This module provides data types of view map components (0D and 1D
diff --git a/release/scripts/freestyle/modules/freestyle/chainingiterators.py b/release/scripts/freestyle/modules/freestyle/chainingiterators.py
index be9a25d1a57803dc256675eca31130d8f81c944c..656a5b09a3732232f585ffd23d19455e7f4f4cfc 100644
--- a/release/scripts/freestyle/modules/freestyle/chainingiterators.py
+++ b/release/scripts/freestyle/modules/freestyle/chainingiterators.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 """
 This module contains chaining iterators used for the chaining
diff --git a/release/scripts/freestyle/modules/freestyle/functions.py b/release/scripts/freestyle/modules/freestyle/functions.py
index 426d344e8ab46614c8d57960dd38a83b32df6d4e..e9fa53c8b7ee681a61a53b207325e2c57321fdd2 100644
--- a/release/scripts/freestyle/modules/freestyle/functions.py
+++ b/release/scripts/freestyle/modules/freestyle/functions.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 """
 This module contains functions operating on vertices (0D elements) and
diff --git a/release/scripts/freestyle/modules/freestyle/predicates.py b/release/scripts/freestyle/modules/freestyle/predicates.py
index 656b6952591e1fefc7336f7cd89deb1ca06ebfbe..611b4b00ae8f0acc2d2fb6c6976603566e8d6094 100644
--- a/release/scripts/freestyle/modules/freestyle/predicates.py
+++ b/release/scripts/freestyle/modules/freestyle/predicates.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 """
 This module contains predicates operating on vertices (0D elements)
diff --git a/release/scripts/freestyle/modules/freestyle/shaders.py b/release/scripts/freestyle/modules/freestyle/shaders.py
index 95e1c87365798b75a13def21d354e5603d170344..494722bad39b5c75d24fff0ce5db08c0daad3e4c 100644
--- a/release/scripts/freestyle/modules/freestyle/shaders.py
+++ b/release/scripts/freestyle/modules/freestyle/shaders.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : shaders.py
 #  Authors  : Fredo Durand, Stephane Grabli, Francois Sillion, Emmanuel Turquin
diff --git a/release/scripts/freestyle/modules/freestyle/types.py b/release/scripts/freestyle/modules/freestyle/types.py
index 72d263b26a3efa4b441ea074211159e76e42f00e..037fbaf70f247e11b744881362a32f5714d85dd7 100644
--- a/release/scripts/freestyle/modules/freestyle/types.py
+++ b/release/scripts/freestyle/modules/freestyle/types.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 """
 This module contains core classes of the Freestyle Python API,
diff --git a/release/scripts/freestyle/modules/freestyle/utils.py b/release/scripts/freestyle/modules/freestyle/utils.py
index d129de66221e483af9ff3378b6a6470e057ba74b..152dbca6f5eaae20fa3d081945e46091fcdc0dc5 100644
--- a/release/scripts/freestyle/modules/freestyle/utils.py
+++ b/release/scripts/freestyle/modules/freestyle/utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 """
 This module contains helper functions used for Freestyle style module
diff --git a/release/scripts/freestyle/modules/parameter_editor.py b/release/scripts/freestyle/modules/parameter_editor.py
index ed5b57af68943646de946134712a44839727d456..5940f4f5cc81142eaff8b70d582850fd2a5b5fdc 100644
--- a/release/scripts/freestyle/modules/parameter_editor.py
+++ b/release/scripts/freestyle/modules/parameter_editor.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : parameter_editor.py
 #  Authors  : Tamito Kajiyama
diff --git a/release/scripts/freestyle/styles/anisotropic_diffusion.py b/release/scripts/freestyle/styles/anisotropic_diffusion.py
index 48de802ba1b5ade8f61f62db61ad60dc23a75dc1..3bcde4e543cf37a07372877ee2b4c96cb9f05e5d 100644
--- a/release/scripts/freestyle/styles/anisotropic_diffusion.py
+++ b/release/scripts/freestyle/styles/anisotropic_diffusion.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : anisotropic_diffusion.py
 #  Author   : Fredo Durand
diff --git a/release/scripts/freestyle/styles/apriori_and_causal_density.py b/release/scripts/freestyle/styles/apriori_and_causal_density.py
index d19a1cda0bc72f7cee8abeb10dd4161d5fcc9ee7..400549197b4e84fc30ced7f6975458f2bf2ed41a 100644
--- a/release/scripts/freestyle/styles/apriori_and_causal_density.py
+++ b/release/scripts/freestyle/styles/apriori_and_causal_density.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : apriori_and_causal_density.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/apriori_density.py b/release/scripts/freestyle/styles/apriori_density.py
index 833f04d487c5fd4fadc4bc8b3c690520c9f94040..0490c696480a18f61a1e25611d4261a9e3ec65ad 100644
--- a/release/scripts/freestyle/styles/apriori_density.py
+++ b/release/scripts/freestyle/styles/apriori_density.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : apriori_density.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/backbone_stretcher.py b/release/scripts/freestyle/styles/backbone_stretcher.py
index cc495f3371683d38d93900f6353148aab3d04577..0dd87001f1c87e96fdbe4ecb8f8e2925bdfe5682 100644
--- a/release/scripts/freestyle/styles/backbone_stretcher.py
+++ b/release/scripts/freestyle/styles/backbone_stretcher.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : backbone_stretcher.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/blueprint_circles.py b/release/scripts/freestyle/styles/blueprint_circles.py
index 891d1b90c28bb1cab11e2d6d84cc81b2869eefe3..b923f60c23a9db7956df3d9e4dc28b9283de8e04 100644
--- a/release/scripts/freestyle/styles/blueprint_circles.py
+++ b/release/scripts/freestyle/styles/blueprint_circles.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : blueprint_circles.py
 #  Author   : Emmanuel Turquin
diff --git a/release/scripts/freestyle/styles/blueprint_ellipses.py b/release/scripts/freestyle/styles/blueprint_ellipses.py
index 4186c69ff205296f79b04d2a606498972fbf2707..08457e7f4910eb85e695110abb0d0867e17cd766 100644
--- a/release/scripts/freestyle/styles/blueprint_ellipses.py
+++ b/release/scripts/freestyle/styles/blueprint_ellipses.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : blueprint_ellipses.py
 #  Author   : Emmanuel Turquin
diff --git a/release/scripts/freestyle/styles/blueprint_squares.py b/release/scripts/freestyle/styles/blueprint_squares.py
index cba53d8065cdc3c0b8bf901340dac3b9e05a5c5c..ae92245af94e71463c7d94f9d0cf4efaa2576098 100644
--- a/release/scripts/freestyle/styles/blueprint_squares.py
+++ b/release/scripts/freestyle/styles/blueprint_squares.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : blueprint_squares.py
 #  Author   : Emmanuel Turquin
diff --git a/release/scripts/freestyle/styles/cartoon.py b/release/scripts/freestyle/styles/cartoon.py
index e8244803dd6d694ad9ea822af486f312d8fcc9b4..c99607c2e3befb0d50933248672720c12e71c873 100644
--- a/release/scripts/freestyle/styles/cartoon.py
+++ b/release/scripts/freestyle/styles/cartoon.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : cartoon.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/contour.py b/release/scripts/freestyle/styles/contour.py
index eabd38abc208a1df52af2ea248842e997cd06da7..608259f6094b56efbda44d1bab915508308fb4d5 100644
--- a/release/scripts/freestyle/styles/contour.py
+++ b/release/scripts/freestyle/styles/contour.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : contour.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/curvature2d.py b/release/scripts/freestyle/styles/curvature2d.py
index 84ee544242ad61616d27738f4bd93a1c49a1cede..4ec884972e64d53519216f0299c1386be82d863d 100644
--- a/release/scripts/freestyle/styles/curvature2d.py
+++ b/release/scripts/freestyle/styles/curvature2d.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : curvature2d.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/external_contour.py b/release/scripts/freestyle/styles/external_contour.py
index 37d60dda8270fd6d4401f4a40a92483ec95ea5a1..11713a5b2aa93c10825457d2dacfd5b0ca841a85 100644
--- a/release/scripts/freestyle/styles/external_contour.py
+++ b/release/scripts/freestyle/styles/external_contour.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : external_contour.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/external_contour_sketchy.py b/release/scripts/freestyle/styles/external_contour_sketchy.py
index c0efe8912dccfb67d58e2ed35d44192b8b793bcb..337af81b9e3d8879e65082192017c85d3b96dcf9 100644
--- a/release/scripts/freestyle/styles/external_contour_sketchy.py
+++ b/release/scripts/freestyle/styles/external_contour_sketchy.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : external_contour_sketchy.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/external_contour_smooth.py b/release/scripts/freestyle/styles/external_contour_smooth.py
index 63e530e3aa0808c3ce0de3548a9bb95e6dd37b0e..5c40950fbecedb16a6508d27aee2086b9640680c 100644
--- a/release/scripts/freestyle/styles/external_contour_smooth.py
+++ b/release/scripts/freestyle/styles/external_contour_smooth.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : external_contour_smooth.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/haloing.py b/release/scripts/freestyle/styles/haloing.py
index 5f8a419b999ea6357ceec1a5d5c4f4d6c6e69fea..7c830cb95ab5842e839ce2655a0845d02839ad88 100644
--- a/release/scripts/freestyle/styles/haloing.py
+++ b/release/scripts/freestyle/styles/haloing.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : haloing.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/ignore_small_occlusions.py b/release/scripts/freestyle/styles/ignore_small_occlusions.py
index a5fb4671917c47064df6afe651d531e110e07871..f9d2c10ff5e1993057e18b5bcc45778f6a629d95 100644
--- a/release/scripts/freestyle/styles/ignore_small_occlusions.py
+++ b/release/scripts/freestyle/styles/ignore_small_occlusions.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : ignore_small_occlusions.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/invisible_lines.py b/release/scripts/freestyle/styles/invisible_lines.py
index 8b23d346f62b5cd9c016bd11d477688e9568b3a7..bea5b0ff5898277397481d4f01d1639ba560e0d8 100644
--- a/release/scripts/freestyle/styles/invisible_lines.py
+++ b/release/scripts/freestyle/styles/invisible_lines.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : invisible_lines.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/japanese_bigbrush.py b/release/scripts/freestyle/styles/japanese_bigbrush.py
index b81a06daf0df23f88b4f1bff50448193292a6bdf..3c2d2a98e1b640aa5cfb12e327e616acf1d5208d 100644
--- a/release/scripts/freestyle/styles/japanese_bigbrush.py
+++ b/release/scripts/freestyle/styles/japanese_bigbrush.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : japanese_bigbrush.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/long_anisotropically_dense.py b/release/scripts/freestyle/styles/long_anisotropically_dense.py
index 2e720416632da42c22940ea30188411e3d58d5a4..32975d561e5d3a2229e568cb07e37a08c9cdab40 100644
--- a/release/scripts/freestyle/styles/long_anisotropically_dense.py
+++ b/release/scripts/freestyle/styles/long_anisotropically_dense.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : long_anisotropically_dense.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/multiple_parameterization.py b/release/scripts/freestyle/styles/multiple_parameterization.py
index 98ed65d0bd1e4abf912d6ba7d6b8d9379c072c1e..8e2124d3d9d612b64228b32861178e2f2af5910d 100644
--- a/release/scripts/freestyle/styles/multiple_parameterization.py
+++ b/release/scripts/freestyle/styles/multiple_parameterization.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : multiple_parameterization.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/nature.py b/release/scripts/freestyle/styles/nature.py
index e8c4f4508b116251c7439b9a9ed0f2868c33a7ed..c5ca2f79fa17a55429f97f8dadf92108f35a41c7 100644
--- a/release/scripts/freestyle/styles/nature.py
+++ b/release/scripts/freestyle/styles/nature.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : nature.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/near_lines.py b/release/scripts/freestyle/styles/near_lines.py
index 57de57347e7abcb09a69c79c6146fe16565f8608..8c2b119d965c954f1ff4532f5aa4921ef698a7fd 100644
--- a/release/scripts/freestyle/styles/near_lines.py
+++ b/release/scripts/freestyle/styles/near_lines.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : near_lines.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/occluded_by_specific_object.py b/release/scripts/freestyle/styles/occluded_by_specific_object.py
index 0f12195eb140d5773973b1049ca887066d2ab51a..fe8be37e236e0efa9689b87f6c2e7591aeb4204f 100644
--- a/release/scripts/freestyle/styles/occluded_by_specific_object.py
+++ b/release/scripts/freestyle/styles/occluded_by_specific_object.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : occluded_by_specific_object.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/polygonalize.py b/release/scripts/freestyle/styles/polygonalize.py
index b31cad8d7d5e83f96163dfd407eee31eea383c05..0300f1884b930978486c98ea53d993953384a6de 100644
--- a/release/scripts/freestyle/styles/polygonalize.py
+++ b/release/scripts/freestyle/styles/polygonalize.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : polygonalize.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/qi0.py b/release/scripts/freestyle/styles/qi0.py
index a1e8a07123689fae9feb84123adeed3f88ac158a..c495b69ab08912c55c3e35c12abc61a41778687b 100644
--- a/release/scripts/freestyle/styles/qi0.py
+++ b/release/scripts/freestyle/styles/qi0.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : qi0.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/qi0_not_external_contour.py b/release/scripts/freestyle/styles/qi0_not_external_contour.py
index 1b3fb0644ad6ea380b82c422ed4393c908e04d6a..b5f367afb5e7410dc3742a9ccc229faf2e48d294 100644
--- a/release/scripts/freestyle/styles/qi0_not_external_contour.py
+++ b/release/scripts/freestyle/styles/qi0_not_external_contour.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : qi0_not_external_contour.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/qi1.py b/release/scripts/freestyle/styles/qi1.py
index 60d210cd1347f8466588c2766a0fee8c2e2c806e..94ea952d1f2ed709087254e905af055954a31af1 100644
--- a/release/scripts/freestyle/styles/qi1.py
+++ b/release/scripts/freestyle/styles/qi1.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : qi1.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/qi2.py b/release/scripts/freestyle/styles/qi2.py
index f2508241cade355690e1333d6f0a8977f265335f..2112100215a3d744d3e877e39b4e138b2ad079e1 100644
--- a/release/scripts/freestyle/styles/qi2.py
+++ b/release/scripts/freestyle/styles/qi2.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : qi2.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/sequentialsplit_sketchy.py b/release/scripts/freestyle/styles/sequentialsplit_sketchy.py
index a128787b83980a1077532532949b9d6d753458cc..e98ad42c3497e7a16929599d3b144031ec7e7b55 100644
--- a/release/scripts/freestyle/styles/sequentialsplit_sketchy.py
+++ b/release/scripts/freestyle/styles/sequentialsplit_sketchy.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : sequentialsplit_sketchy.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/sketchy_multiple_parameterization.py b/release/scripts/freestyle/styles/sketchy_multiple_parameterization.py
index c3bf7b12bcb1066c19e0fbc766dd9ab148e05511..f6676df010d5ce74741097ef5e51cd25acb2cf06 100644
--- a/release/scripts/freestyle/styles/sketchy_multiple_parameterization.py
+++ b/release/scripts/freestyle/styles/sketchy_multiple_parameterization.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : sketchy_multiple_parameterization.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/sketchy_topology_broken.py b/release/scripts/freestyle/styles/sketchy_topology_broken.py
index d0b66ff1f5147f91b0428d78ea4ae19d9490b0d4..e1b38c1d2432a969675ffc0fcbac04fa4c6623c8 100644
--- a/release/scripts/freestyle/styles/sketchy_topology_broken.py
+++ b/release/scripts/freestyle/styles/sketchy_topology_broken.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : sketchy_topology_broken.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/sketchy_topology_preserved.py b/release/scripts/freestyle/styles/sketchy_topology_preserved.py
index 3f5f6acc9a8c960fba5765812ff67dea20b083b8..9c7fc65fe81bb34638fd4f4ee05d4fa61fcf736d 100644
--- a/release/scripts/freestyle/styles/sketchy_topology_preserved.py
+++ b/release/scripts/freestyle/styles/sketchy_topology_preserved.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : sketchy_topology_preserved.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/split_at_highest_2d_curvatures.py b/release/scripts/freestyle/styles/split_at_highest_2d_curvatures.py
index 68a80d89ea7c7b23302858dd2ddfe88b93707121..4f1e9cc932e501870ec6c4f7178193cd5832a86e 100644
--- a/release/scripts/freestyle/styles/split_at_highest_2d_curvatures.py
+++ b/release/scripts/freestyle/styles/split_at_highest_2d_curvatures.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : split_at_highest_2d_curvature.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/split_at_tvertices.py b/release/scripts/freestyle/styles/split_at_tvertices.py
index 84a51eb936b996ea2569babe19ecf2f30e264eac..82a9370812df799a02f6f85b87095f95f0d4575e 100644
--- a/release/scripts/freestyle/styles/split_at_tvertices.py
+++ b/release/scripts/freestyle/styles/split_at_tvertices.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : split_at_tvertices.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/suggestive.py b/release/scripts/freestyle/styles/suggestive.py
index b7cf5b8bc88af011a35e9634c93a955a47d1b7d8..2774c320fcde7f436c1954dee663659af93dc53b 100644
--- a/release/scripts/freestyle/styles/suggestive.py
+++ b/release/scripts/freestyle/styles/suggestive.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : suggestive.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/thickness_fof_depth_discontinuity.py b/release/scripts/freestyle/styles/thickness_fof_depth_discontinuity.py
index 03738b268d1c9e26deeb47de4260d4fcc607cb47..86cdf5adcd6737f1243fbba5ddb88089f25d77c1 100644
--- a/release/scripts/freestyle/styles/thickness_fof_depth_discontinuity.py
+++ b/release/scripts/freestyle/styles/thickness_fof_depth_discontinuity.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : thickness_fof_depth_discontinuity.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/tipremover.py b/release/scripts/freestyle/styles/tipremover.py
index e5cea57845bf22d4b2e83fd99285d01441b84809..d8c78429c1144529ea4f5464d3a0622c938e1d88 100644
--- a/release/scripts/freestyle/styles/tipremover.py
+++ b/release/scripts/freestyle/styles/tipremover.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : tipremover.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/tvertex_remover.py b/release/scripts/freestyle/styles/tvertex_remover.py
index 0756e7bab5f754ebe1852ce7f0c2f76e9a8de451..3a1d44a4e902f01c1652841eac8b193ee591366e 100644
--- a/release/scripts/freestyle/styles/tvertex_remover.py
+++ b/release/scripts/freestyle/styles/tvertex_remover.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : tvertex_remover.py
 #  Author   : Stephane Grabli
diff --git a/release/scripts/freestyle/styles/uniformpruning_zsort.py b/release/scripts/freestyle/styles/uniformpruning_zsort.py
index 3ce2743c5768a82cb5508826fa6ebdd30ceadd25..ec9c28b88017e4cd217d37ed632f5bc2bd658808 100644
--- a/release/scripts/freestyle/styles/uniformpruning_zsort.py
+++ b/release/scripts/freestyle/styles/uniformpruning_zsort.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 #  Filename : uniformpruning_zsort.py
 #  Authors  : Fredo Durand, Stephane Grabli, Francois Sillion, Emmanuel Turquin
diff --git a/release/scripts/modules/addon_utils.py b/release/scripts/modules/addon_utils.py
index 73b978d7d2dc3d6290e8f69d93244e3cbd128226..554150de87db0950c8098f81bf9d8e9f8d794668 100644
--- a/release/scripts/modules/addon_utils.py
+++ b/release/scripts/modules/addon_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/animsys_refactor.py b/release/scripts/modules/animsys_refactor.py
index fd4952e2a535c2472b796945ef6d424ee8f79833..35072885deb2f840f33b1f9e0d9f779506a17bba 100644
--- a/release/scripts/modules/animsys_refactor.py
+++ b/release/scripts/modules/animsys_refactor.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_app_override/__init__.py b/release/scripts/modules/bl_app_override/__init__.py
index 112fe040f0cc2816bf95b1ae99a4f45da480fcb6..e60c123ead53d5c43725e39510dad0e1274b5596 100644
--- a/release/scripts/modules/bl_app_override/__init__.py
+++ b/release/scripts/modules/bl_app_override/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bl_app_override/helpers.py b/release/scripts/modules/bl_app_override/helpers.py
index 0a32e4b8b23523ee871f426bdc880688fa5e39e0..dd17e8aa7c6143a527cfba00c03646ee164030ae 100644
--- a/release/scripts/modules/bl_app_override/helpers.py
+++ b/release/scripts/modules/bl_app_override/helpers.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bl_app_template_utils.py b/release/scripts/modules/bl_app_template_utils.py
index d4f867ce52487ece73297c3bd433e2af4d7e4259..9d71664e513dd059eed541e14212a28ece7c438f 100644
--- a/release/scripts/modules/bl_app_template_utils.py
+++ b/release/scripts/modules/bl_app_template_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bl_i18n_utils/__init__.py b/release/scripts/modules/bl_i18n_utils/__init__.py
index 4072247c6d612ff48b226e94e504e5d12d9b5409..b07a993c12e93044e7aeead387c403bee0bae8d9 100644
--- a/release/scripts/modules/bl_i18n_utils/__init__.py
+++ b/release/scripts/modules/bl_i18n_utils/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_i18n_utils/bl_extract_messages.py b/release/scripts/modules/bl_i18n_utils/bl_extract_messages.py
index cf904a1a88becc2c37a427b3a03e395d4633cdd5..584613097207d76e7b1c32854139233c92792cff 100644
--- a/release/scripts/modules/bl_i18n_utils/bl_extract_messages.py
+++ b/release/scripts/modules/bl_i18n_utils/bl_extract_messages.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_i18n_utils/merge_po.py b/release/scripts/modules/bl_i18n_utils/merge_po.py
index 7e3c8a42b17583edbf488c3404411d498af6d4d7..864ec5e940445a11f20520ca75a2af05141f224a 100755
--- a/release/scripts/modules/bl_i18n_utils/merge_po.py
+++ b/release/scripts/modules/bl_i18n_utils/merge_po.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_i18n_utils/settings.py b/release/scripts/modules/bl_i18n_utils/settings.py
index d41db4e45b3783eb09942f79adda5c6e447d42ac..f8975d91f86608bf73329056c64f05633d91822b 100644
--- a/release/scripts/modules/bl_i18n_utils/settings.py
+++ b/release/scripts/modules/bl_i18n_utils/settings.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_i18n_utils/settings_user.py b/release/scripts/modules/bl_i18n_utils/settings_user.py
index 23d9783cd0feb4ea95fef74e9e96c4cb40ee2c30..a7aa8a80af8b7fd5dc3c19620437228a6f1484bf 100644
--- a/release/scripts/modules/bl_i18n_utils/settings_user.py
+++ b/release/scripts/modules/bl_i18n_utils/settings_user.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_i18n_utils/utils.py b/release/scripts/modules/bl_i18n_utils/utils.py
index 2e0113051a54f2a977e41ec688860fbb1dfd9a6c..ec5465549b3e18486cb127669164db9adf1a3b96 100644
--- a/release/scripts/modules/bl_i18n_utils/utils.py
+++ b/release/scripts/modules/bl_i18n_utils/utils.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_i18n_utils/utils_cli.py b/release/scripts/modules/bl_i18n_utils/utils_cli.py
index ea74ba832d9e243e9972da2cf5f8c72cf2d4e373..7bab21ec05ff9554e3ee04aea71ea6d1b8c26dee 100644
--- a/release/scripts/modules/bl_i18n_utils/utils_cli.py
+++ b/release/scripts/modules/bl_i18n_utils/utils_cli.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_i18n_utils/utils_languages_menu.py b/release/scripts/modules/bl_i18n_utils/utils_languages_menu.py
index 63981310839402e76337c2baeffe1dd945523998..da4183d457c97520ff995e76c218e22624db6bef 100755
--- a/release/scripts/modules/bl_i18n_utils/utils_languages_menu.py
+++ b/release/scripts/modules/bl_i18n_utils/utils_languages_menu.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_i18n_utils/utils_rtl.py b/release/scripts/modules/bl_i18n_utils/utils_rtl.py
index 4b874efa2da510e051ce6b99e1b738fc00c17eb3..3e4fc246c16fdfc12e73ac1480e6d3d7784a0159 100755
--- a/release/scripts/modules/bl_i18n_utils/utils_rtl.py
+++ b/release/scripts/modules/bl_i18n_utils/utils_rtl.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_i18n_utils/utils_spell_check.py b/release/scripts/modules/bl_i18n_utils/utils_spell_check.py
index 6a74c27b9c47f076e99989de80f015d2ecdcf281..144b7d094221cb6dc6ef26f9d6e4158c0623b827 100644
--- a/release/scripts/modules/bl_i18n_utils/utils_spell_check.py
+++ b/release/scripts/modules/bl_i18n_utils/utils_spell_check.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_keymap_utils/__init__.py b/release/scripts/modules/bl_keymap_utils/__init__.py
index 1c4a64081f8217ebdf60f72541839ad38a6f2848..e00776d3466aa833ce908e4d10aa3bb478dd94f1 100644
--- a/release/scripts/modules/bl_keymap_utils/__init__.py
+++ b/release/scripts/modules/bl_keymap_utils/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_keymap_utils/io.py b/release/scripts/modules/bl_keymap_utils/io.py
index d8b68822febda6caa288d6cc1d790450856a557b..f34002741c6368e94c633caa7616404dbe3048fd 100644
--- a/release/scripts/modules/bl_keymap_utils/io.py
+++ b/release/scripts/modules/bl_keymap_utils/io.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_keymap_utils/keymap_from_toolbar.py b/release/scripts/modules/bl_keymap_utils/keymap_from_toolbar.py
index 26f38cf09fca04eb284b4e6f53a8dc42a9f49c73..604d1ffd547c6d7554c715d49d35315dbb60107c 100644
--- a/release/scripts/modules/bl_keymap_utils/keymap_from_toolbar.py
+++ b/release/scripts/modules/bl_keymap_utils/keymap_from_toolbar.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_keymap_utils/keymap_hierarchy.py b/release/scripts/modules/bl_keymap_utils/keymap_hierarchy.py
index c3bc0f429c181e7b5cfa77c8edb9904f1a98bcb7..938849d8e6ecc365d4676225524e662dfe1c6409 100644
--- a/release/scripts/modules/bl_keymap_utils/keymap_hierarchy.py
+++ b/release/scripts/modules/bl_keymap_utils/keymap_hierarchy.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_keymap_utils/platform_helpers.py b/release/scripts/modules/bl_keymap_utils/platform_helpers.py
index 848eb4e10c454a85856333cbf921d4313deb798b..e6b874170396775f6ef0387b0d65a6e0220d7390 100644
--- a/release/scripts/modules/bl_keymap_utils/platform_helpers.py
+++ b/release/scripts/modules/bl_keymap_utils/platform_helpers.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 
 def keyconfig_data_oskey_from_ctrl(keyconfig_data_src, *, filter_fn=None):
diff --git a/release/scripts/modules/bl_keymap_utils/versioning.py b/release/scripts/modules/bl_keymap_utils/versioning.py
index 4c2e8ed7f54cee888b96e237528e1195b02bce03..ee7cc5daceb960374ac0b766b703a9a7f2e597c4 100644
--- a/release/scripts/modules/bl_keymap_utils/versioning.py
+++ b/release/scripts/modules/bl_keymap_utils/versioning.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_previews_utils/bl_previews_render.py b/release/scripts/modules/bl_previews_utils/bl_previews_render.py
index 0b3b3a4e406efe4edb1bb9de2c6a0e13ea868397..0153cf45ad8fda0702db8604c3eb7279aedec176 100644
--- a/release/scripts/modules/bl_previews_utils/bl_previews_render.py
+++ b/release/scripts/modules/bl_previews_utils/bl_previews_render.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_rna_utils/data_path.py b/release/scripts/modules/bl_rna_utils/data_path.py
index 439dfcae12af4b7e905f716546cb08ad00320f57..e15d9bc2d1c97108c69d93f64ba8f8d7a6987737 100644
--- a/release/scripts/modules/bl_rna_utils/data_path.py
+++ b/release/scripts/modules/bl_rna_utils/data_path.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bl_ui_utils/bug_report_url.py b/release/scripts/modules/bl_ui_utils/bug_report_url.py
index ef6a261f7765f81ea8e03f8cde3f5e734641919d..28af7aaa0135c7e7485aeaa9a20f8adc09e69eac 100644
--- a/release/scripts/modules/bl_ui_utils/bug_report_url.py
+++ b/release/scripts/modules/bl_ui_utils/bug_report_url.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/blend_render_info.py b/release/scripts/modules/blend_render_info.py
index 8cf4734bddb01bd169dfded3e6766f63058cfba6..f7f95ac6b821ca0bde26ad8e5616fabbe120304e 100755
--- a/release/scripts/modules/blend_render_info.py
+++ b/release/scripts/modules/blend_render_info.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bpy/__init__.py b/release/scripts/modules/bpy/__init__.py
index 3fc5f54b77b4a06eac408d5ea582feabe16ff868..35848602f9d4fefdb67ec825995312a43c8e8400 100644
--- a/release/scripts/modules/bpy/__init__.py
+++ b/release/scripts/modules/bpy/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bpy/ops.py b/release/scripts/modules/bpy/ops.py
index 56346d453a268c3f9715173463767ef20689a31e..838bd81c0d2b722e66cbdc3b5645df404b3ee567 100644
--- a/release/scripts/modules/bpy/ops.py
+++ b/release/scripts/modules/bpy/ops.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bpy/path.py b/release/scripts/modules/bpy/path.py
index 37bdb939c075d28059ea00e44d6585990635c23d..88c34be69069d6ef6200f689cabf9c7f90d93330 100644
--- a/release/scripts/modules/bpy/path.py
+++ b/release/scripts/modules/bpy/path.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bpy/utils/__init__.py b/release/scripts/modules/bpy/utils/__init__.py
index b009c38edb499a860275c73c458f830fb8dd2477..bbfb8305e76aab08b9900fd112390a413caf2df7 100644
--- a/release/scripts/modules/bpy/utils/__init__.py
+++ b/release/scripts/modules/bpy/utils/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bpy/utils/previews.py b/release/scripts/modules/bpy/utils/previews.py
index 7402dbb6c0ccc464b469784e598b8131629faf49..1f3981766434975ab2e09fb07e06254e14ca16aa 100644
--- a/release/scripts/modules/bpy/utils/previews.py
+++ b/release/scripts/modules/bpy/utils/previews.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bpy/utils/toolsystem.py b/release/scripts/modules/bpy/utils/toolsystem.py
index e2431536b4fa23e36963d2dce80875baf9d61018..dbcf56900a194cd98081241716e31a9d6ff46aa8 100644
--- a/release/scripts/modules/bpy/utils/toolsystem.py
+++ b/release/scripts/modules/bpy/utils/toolsystem.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bpy_extras/__init__.py b/release/scripts/modules/bpy_extras/__init__.py
index cb990b014a17ca12e645eff9565bf1e7d7f223b7..1af9048ebfd3424e4d138777248f15d395bedf0e 100644
--- a/release/scripts/modules/bpy_extras/__init__.py
+++ b/release/scripts/modules/bpy_extras/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bpy_extras/anim_utils.py b/release/scripts/modules/bpy_extras/anim_utils.py
index dd19bb8f975eadd1b52a84a99c1b55e8e3c9a4a9..1b1df41d2c66b891ad67085ddd04e3f35292f6e9 100644
--- a/release/scripts/modules/bpy_extras/anim_utils.py
+++ b/release/scripts/modules/bpy_extras/anim_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bpy_extras/asset_utils.py b/release/scripts/modules/bpy_extras/asset_utils.py
index c7ebdc1d5e1b1d10762d1857be95883b6833a8be..70c02272fd2250f5c3fbe318e55eb281ce2443dd 100644
--- a/release/scripts/modules/bpy_extras/asset_utils.py
+++ b/release/scripts/modules/bpy_extras/asset_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bpy_extras/image_utils.py b/release/scripts/modules/bpy_extras/image_utils.py
index f4d34de50370f88fd71717ec1a746e27de3f6fca..eaf5922a19901bd43c2ff1faded4cfb9f4c8e6e9 100644
--- a/release/scripts/modules/bpy_extras/image_utils.py
+++ b/release/scripts/modules/bpy_extras/image_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bpy_extras/io_utils.py b/release/scripts/modules/bpy_extras/io_utils.py
index 65d8ce67578a7420e800dfe2aa3b98f3b54a2eb3..37fc8aa4412944ee12a6563296b327b9c0d4653d 100644
--- a/release/scripts/modules/bpy_extras/io_utils.py
+++ b/release/scripts/modules/bpy_extras/io_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bpy_extras/keyconfig_utils.py b/release/scripts/modules/bpy_extras/keyconfig_utils.py
index 3d1b087094b8b6946c0e924ea689e63eb9cdc75d..1b8f3ac3fd8d40e78c18a2090c79047f50bf7c68 100644
--- a/release/scripts/modules/bpy_extras/keyconfig_utils.py
+++ b/release/scripts/modules/bpy_extras/keyconfig_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bpy_extras/mesh_utils.py b/release/scripts/modules/bpy_extras/mesh_utils.py
index cef03a1eb08a671a6dee01068acad8902640d002..a6f71dc0a2a7c15a2ba038278d409daaec658390 100644
--- a/release/scripts/modules/bpy_extras/mesh_utils.py
+++ b/release/scripts/modules/bpy_extras/mesh_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bpy_extras/node_shader_utils.py b/release/scripts/modules/bpy_extras/node_shader_utils.py
index e37c1a1715276d6dfa6740314226916f7b5df469..522357296fd5919f1e59e31a1363ab0df85d7b91 100644
--- a/release/scripts/modules/bpy_extras/node_shader_utils.py
+++ b/release/scripts/modules/bpy_extras/node_shader_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bpy_extras/node_utils.py b/release/scripts/modules/bpy_extras/node_utils.py
index d4c6d5cd45a11903f553c42020849384b549f918..639ebc46e162e6a35599325bd97d04377a87731e 100644
--- a/release/scripts/modules/bpy_extras/node_utils.py
+++ b/release/scripts/modules/bpy_extras/node_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bpy_extras/object_utils.py b/release/scripts/modules/bpy_extras/object_utils.py
index ddfd3d66e908e70a315adf58efd54334faee7a20..6829aed55653f5eb394fb1eab4c717aa93448e5a 100644
--- a/release/scripts/modules/bpy_extras/object_utils.py
+++ b/release/scripts/modules/bpy_extras/object_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 from __future__ import annotations
diff --git a/release/scripts/modules/bpy_extras/view3d_utils.py b/release/scripts/modules/bpy_extras/view3d_utils.py
index 2a8b3c2ce9b1e0c4ceee2bdabbe1f22af5ebe9da..7de363483e5a3663d3f4d855ce514e7240d58b4b 100644
--- a/release/scripts/modules/bpy_extras/view3d_utils.py
+++ b/release/scripts/modules/bpy_extras/view3d_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bpy_extras/wm_utils/progress_report.py b/release/scripts/modules/bpy_extras/wm_utils/progress_report.py
index bcce44aab9fb79065c36ff93bce3b2ebbb820f12..da9ef735e0dbaf289e8219b72a38c2057824c2a2 100644
--- a/release/scripts/modules/bpy_extras/wm_utils/progress_report.py
+++ b/release/scripts/modules/bpy_extras/wm_utils/progress_report.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/bpy_restrict_state.py b/release/scripts/modules/bpy_restrict_state.py
index 7ad9e0ec0a8d8302b7b918e8df5a3d58c4ef7559..78d4b4be9724a0307547fda102bbac6c415e69ba 100644
--- a/release/scripts/modules/bpy_restrict_state.py
+++ b/release/scripts/modules/bpy_restrict_state.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/bpy_types.py b/release/scripts/modules/bpy_types.py
index 0e457d828fe100dc009e08a49d1d28978f53fad6..54fcc8faf4689e443ea4e22979fcb9e443b9d49d 100644
--- a/release/scripts/modules/bpy_types.py
+++ b/release/scripts/modules/bpy_types.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/console/__init__.py b/release/scripts/modules/console/__init__.py
index 731f5715818db5820df3d58419c8fcea6f6f2b88..5fa5b11f4bf627a2ed78ffffbd58cf345f28706d 100644
--- a/release/scripts/modules/console/__init__.py
+++ b/release/scripts/modules/console/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # Copyright (c) 2009 www.stani.be
 
diff --git a/release/scripts/modules/console/complete_calltip.py b/release/scripts/modules/console/complete_calltip.py
index c8aeaf2c98f05a885dcba0caf7933c0960b36695..6c7b0611ee22cea55e1d6469f91e1f54e43bdcf7 100644
--- a/release/scripts/modules/console/complete_calltip.py
+++ b/release/scripts/modules/console/complete_calltip.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # Copyright (c) 2009 www.stani.be
 
diff --git a/release/scripts/modules/console/complete_import.py b/release/scripts/modules/console/complete_import.py
index 524989b345591f20310ac38cbf06850cb1db553d..2339e79c8f1a25e4b8aadafc6a795e1a52b84407 100644
--- a/release/scripts/modules/console/complete_import.py
+++ b/release/scripts/modules/console/complete_import.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # Copyright (c) 2009 Fernando Perez, www.stani.be
 
diff --git a/release/scripts/modules/console/complete_namespace.py b/release/scripts/modules/console/complete_namespace.py
index 68c06e641dc8c8dddddd909535e14c85beeb16c1..7bfa2aac1c189d0c24706df8ac918f3b9f1e5237 100644
--- a/release/scripts/modules/console/complete_namespace.py
+++ b/release/scripts/modules/console/complete_namespace.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # Copyright (c) 2009 www.stani.be
 
diff --git a/release/scripts/modules/console/intellisense.py b/release/scripts/modules/console/intellisense.py
index 68ddb5ed12b76a590a394e8ad7875f3b7381019c..9484f825f9f9e89ba5b2e12dab3bcb584fef10a6 100644
--- a/release/scripts/modules/console/intellisense.py
+++ b/release/scripts/modules/console/intellisense.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # Copyright (c) 2009 www.stani.be
 
diff --git a/release/scripts/modules/console_python.py b/release/scripts/modules/console_python.py
index 637fc9ed8b6efa9df0a7577db671c68ddd10f216..819a01b895f3bcbb18597c62b98239109ef343d1 100644
--- a/release/scripts/modules/console_python.py
+++ b/release/scripts/modules/console_python.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 import sys
diff --git a/release/scripts/modules/console_shell.py b/release/scripts/modules/console_shell.py
index 66fa3dcf6fb6ea631c1617851cb48bbe302dccb6..ff8a30557d2a7197296987e25bb08cfd191c4c7c 100644
--- a/release/scripts/modules/console_shell.py
+++ b/release/scripts/modules/console_shell.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import os
diff --git a/release/scripts/modules/gpu_extras/__init__.py b/release/scripts/modules/gpu_extras/__init__.py
index 7448113e2fa43ebe54a5bd6f535ada41ab9a2d5f..a2370efb53322486dbef7d3d90fd761a85241dde 100644
--- a/release/scripts/modules/gpu_extras/__init__.py
+++ b/release/scripts/modules/gpu_extras/__init__.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 __all__ = (
     "batch",
diff --git a/release/scripts/modules/gpu_extras/batch.py b/release/scripts/modules/gpu_extras/batch.py
index e47afb245390c2d1ed8b5ef58a069272666ebd17..34dd1f16665225bb3f0925ac61462c9ff23325f1 100644
--- a/release/scripts/modules/gpu_extras/batch.py
+++ b/release/scripts/modules/gpu_extras/batch.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 __all__ = (
     "batch_for_shader",
diff --git a/release/scripts/modules/gpu_extras/presets.py b/release/scripts/modules/gpu_extras/presets.py
index 6d12533e950a6b46231fa714db4b0740e2027a97..ac9fd3cc1ffecb8519e9222defcbad672c0ba069 100644
--- a/release/scripts/modules/gpu_extras/presets.py
+++ b/release/scripts/modules/gpu_extras/presets.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 def draw_circle_2d(position, color, radius, *, segments=32):
     """
diff --git a/release/scripts/modules/graphviz_export.py b/release/scripts/modules/graphviz_export.py
index 8df0006811ea9e6da04e66cbaf5ea214f1a564d3..a121cc3ed068a91f0975186ad39dbc5b3aa997f8 100644
--- a/release/scripts/modules/graphviz_export.py
+++ b/release/scripts/modules/graphviz_export.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/keyingsets_utils.py b/release/scripts/modules/keyingsets_utils.py
index 0dd06995ed31b920a36a87009a9de04779cfdd3b..e48be9a95eaf74909c7150b6d864851af5303926 100644
--- a/release/scripts/modules/keyingsets_utils.py
+++ b/release/scripts/modules/keyingsets_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/modules/nodeitems_utils.py b/release/scripts/modules/nodeitems_utils.py
index f6b6aaf03cf483714822c01b3b82ff407a1e2bf3..819deec8cc08dd3198ce274f37ac00982b0fa90e 100644
--- a/release/scripts/modules/nodeitems_utils.py
+++ b/release/scripts/modules/nodeitems_utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/modules/rna_info.py b/release/scripts/modules/rna_info.py
index 3bcc709ab72839cb5f051636c3a45ad75a4ffc46..a881475984035e018cbda8226b3b64585a42c8da 100644
--- a/release/scripts/modules/rna_info.py
+++ b/release/scripts/modules/rna_info.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/rna_keymap_ui.py b/release/scripts/modules/rna_keymap_ui.py
index 08035d2548157b1f5e85a40e48d9090f9aeb71d9..2676c00c655c8964a23e07dc3dce0b1ddf22fa25 100644
--- a/release/scripts/modules/rna_keymap_ui.py
+++ b/release/scripts/modules/rna_keymap_ui.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/rna_prop_ui.py b/release/scripts/modules/rna_prop_ui.py
index fce59a26c38efbbd2d2d7df7edc49bf6dcac09ce..1890735a40a158eb8b0e5adb0cad305411bb50e0 100644
--- a/release/scripts/modules/rna_prop_ui.py
+++ b/release/scripts/modules/rna_prop_ui.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/rna_xml.py b/release/scripts/modules/rna_xml.py
index aa8841c5efe42ccff7da3dd156b75cd938bbdcc2..530542e608918fe68aeb707dbacd37adb684dd7e 100644
--- a/release/scripts/modules/rna_xml.py
+++ b/release/scripts/modules/rna_xml.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/modules/sys_info.py b/release/scripts/modules/sys_info.py
index 192fc1a201f99ebec7f93625673bfefe536086fa..80f518e4aeeef89330e75b6f2f333155559bf659 100644
--- a/release/scripts/modules/sys_info.py
+++ b/release/scripts/modules/sys_info.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_app_templates_system/2D_Animation/__init__.py b/release/scripts/startup/bl_app_templates_system/2D_Animation/__init__.py
index c8328f5ee420bca6e81db947ba0369c1687dcfe6..544b32700a3413fe5519c377c40e4e91d9ba74fc 100644
--- a/release/scripts/startup/bl_app_templates_system/2D_Animation/__init__.py
+++ b/release/scripts/startup/bl_app_templates_system/2D_Animation/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # Initialization script for 2D Animation template
 
diff --git a/release/scripts/startup/bl_app_templates_system/Sculpting/__init__.py b/release/scripts/startup/bl_app_templates_system/Sculpting/__init__.py
index ef085bcd688ac056ce9b48eb1a712d6fae97b9d4..f9a17eafbecc86f1e8bb7fdaa4cdbb9cf32bbd40 100644
--- a/release/scripts/startup/bl_app_templates_system/Sculpting/__init__.py
+++ b/release/scripts/startup/bl_app_templates_system/Sculpting/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 import bpy
 from bpy.app.handlers import persistent
diff --git a/release/scripts/startup/bl_app_templates_system/Video_Editing/__init__.py b/release/scripts/startup/bl_app_templates_system/Video_Editing/__init__.py
index 05ecac4d70c2fa520335297ab89331cad2485bd0..0f5b81041cf2941843592592e6c87db6c6d1c8b5 100644
--- a/release/scripts/startup/bl_app_templates_system/Video_Editing/__init__.py
+++ b/release/scripts/startup/bl_app_templates_system/Video_Editing/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 import bpy
 from bpy.app.handlers import persistent
diff --git a/release/scripts/startup/bl_operators/__init__.py b/release/scripts/startup/bl_operators/__init__.py
index 078b32f5e2a29374b700505371b4b47e94685272..bf7783ef9586c045d9b585b51b6175b487d9b660 100644
--- a/release/scripts/startup/bl_operators/__init__.py
+++ b/release/scripts/startup/bl_operators/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from __future__ import annotations
diff --git a/release/scripts/startup/bl_operators/add_mesh_torus.py b/release/scripts/startup/bl_operators/add_mesh_torus.py
index 0ebb6ae27e10cbb428f376fdcf085075bd9edae7..be5ce60af2fc7bb97348c86148c54fcfcd3d4924 100644
--- a/release/scripts/startup/bl_operators/add_mesh_torus.py
+++ b/release/scripts/startup/bl_operators/add_mesh_torus.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 from __future__ import annotations
diff --git a/release/scripts/startup/bl_operators/anim.py b/release/scripts/startup/bl_operators/anim.py
index 81a2896438995f8078eda1812e901833274bff18..dfe3b3ba57c660098435b9db794077da0422c4c6 100644
--- a/release/scripts/startup/bl_operators/anim.py
+++ b/release/scripts/startup/bl_operators/anim.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 from __future__ import annotations
diff --git a/release/scripts/startup/bl_operators/assets.py b/release/scripts/startup/bl_operators/assets.py
index 32e63f77b238cafbb67aeeb8493097f9601277d2..eaf44442c8a3cfcccd20559d94554380f3fc97b0 100644
--- a/release/scripts/startup/bl_operators/assets.py
+++ b/release/scripts/startup/bl_operators/assets.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from __future__ import annotations
diff --git a/release/scripts/startup/bl_operators/bmesh/find_adjacent.py b/release/scripts/startup/bl_operators/bmesh/find_adjacent.py
index 5d8011249bc1e09bebef5998361c15006e771720..5e8b125e060fb2a9ae744a383b1a5775a14a49a3 100644
--- a/release/scripts/startup/bl_operators/bmesh/find_adjacent.py
+++ b/release/scripts/startup/bl_operators/bmesh/find_adjacent.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_operators/clip.py b/release/scripts/startup/bl_operators/clip.py
index f0e099244f451d5ae27d9e2e4693ba3c6ec7e730..d83781b2ed8e441c1cc23dc13588bd9b1feb1de7 100644
--- a/release/scripts/startup/bl_operators/clip.py
+++ b/release/scripts/startup/bl_operators/clip.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_operators/console.py b/release/scripts/startup/bl_operators/console.py
index cd6728d56b298588e8327710c6fd90fef031fa5e..3982f140fec5b99f755d2fcc5a1b3d2af84cd23d 100644
--- a/release/scripts/startup/bl_operators/console.py
+++ b/release/scripts/startup/bl_operators/console.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 from __future__ import annotations
diff --git a/release/scripts/startup/bl_operators/constraint.py b/release/scripts/startup/bl_operators/constraint.py
index f18f3bb3a496266cd4f477a1f147d1f0645a477c..a05936c875c302908942ac5ba5d0ef755773cc2b 100644
--- a/release/scripts/startup/bl_operators/constraint.py
+++ b/release/scripts/startup/bl_operators/constraint.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 from __future__ import annotations
diff --git a/release/scripts/startup/bl_operators/file.py b/release/scripts/startup/bl_operators/file.py
index 4c53279427a0c9c685df8c4a17adf946164ae801..cfe03b4760c8209af6568134e6d1c3f99c80850f 100644
--- a/release/scripts/startup/bl_operators/file.py
+++ b/release/scripts/startup/bl_operators/file.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_operators/freestyle.py b/release/scripts/startup/bl_operators/freestyle.py
index 2e4bbe7c0bf050f3f242f415c6e95ed1efbfcf4e..c5eda7249e12c601d69b62522703fc6bdd1c1a6f 100644
--- a/release/scripts/startup/bl_operators/freestyle.py
+++ b/release/scripts/startup/bl_operators/freestyle.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_operators/geometry_nodes.py b/release/scripts/startup/bl_operators/geometry_nodes.py
index 258a73bd70bb9184afb0716757df48f7471de40e..3616bf52540df417e9939cee46df9343b32859fa 100644
--- a/release/scripts/startup/bl_operators/geometry_nodes.py
+++ b/release/scripts/startup/bl_operators/geometry_nodes.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 import bpy
 from bpy.types import Operator
diff --git a/release/scripts/startup/bl_operators/image.py b/release/scripts/startup/bl_operators/image.py
index f2cd0ad74788bfc5f491182e3fa88d3e5fbe65e6..42f7b1730a805111bd38f68e1f8905e8068d957d 100644
--- a/release/scripts/startup/bl_operators/image.py
+++ b/release/scripts/startup/bl_operators/image.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/startup/bl_operators/mesh.py b/release/scripts/startup/bl_operators/mesh.py
index ddbfe7845b176e289f0bff1027c8f616e9d3ba7d..f3f69530c87d3f5a55226a1d32de2874dfeabc4a 100644
--- a/release/scripts/startup/bl_operators/mesh.py
+++ b/release/scripts/startup/bl_operators/mesh.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/startup/bl_operators/node.py b/release/scripts/startup/bl_operators/node.py
index 2959232fa51c8e61c27bb837bc025075faca5793..b8368cd19706649c5a9c08c28ab10f746a24f212 100644
--- a/release/scripts/startup/bl_operators/node.py
+++ b/release/scripts/startup/bl_operators/node.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 from __future__ import annotations
diff --git a/release/scripts/startup/bl_operators/object.py b/release/scripts/startup/bl_operators/object.py
index df37db401029afbb6e9a935c5255e10bb5a97e25..f5ea2d0f85b9640eafa540cab8eb5134fdce69ab 100644
--- a/release/scripts/startup/bl_operators/object.py
+++ b/release/scripts/startup/bl_operators/object.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/startup/bl_operators/object_align.py b/release/scripts/startup/bl_operators/object_align.py
index 9c7fdf495ee17c5d11f92c3269ba50a99be817f8..f645d8618da801cb72d32503fab6f8109446e00c 100644
--- a/release/scripts/startup/bl_operators/object_align.py
+++ b/release/scripts/startup/bl_operators/object_align.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/startup/bl_operators/object_quick_effects.py b/release/scripts/startup/bl_operators/object_quick_effects.py
index e319c0c30747f1626f26ee5cf5e512ae95287593..9f3dd75a3160e23cdd0c0390f877354a80d7352d 100644
--- a/release/scripts/startup/bl_operators/object_quick_effects.py
+++ b/release/scripts/startup/bl_operators/object_quick_effects.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/startup/bl_operators/object_randomize_transform.py b/release/scripts/startup/bl_operators/object_randomize_transform.py
index 97c477d3704cf142bf9ea6c0b58deae4500296ba..f1864174db723cfe1bfff5ff8b3c50d7659b8e87 100644
--- a/release/scripts/startup/bl_operators/object_randomize_transform.py
+++ b/release/scripts/startup/bl_operators/object_randomize_transform.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/startup/bl_operators/presets.py b/release/scripts/startup/bl_operators/presets.py
index dcf904410dd113871dba592f1eb7a80412ac7329..704693a14690ba799788dfa338a7e7da8532a311 100644
--- a/release/scripts/startup/bl_operators/presets.py
+++ b/release/scripts/startup/bl_operators/presets.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_operators/rigidbody.py b/release/scripts/startup/bl_operators/rigidbody.py
index 1ef92a907547c01a9ffb8d083bca16a81009b9e7..5aab842d672cd77102da634cedf67ed4e52fe600 100644
--- a/release/scripts/startup/bl_operators/rigidbody.py
+++ b/release/scripts/startup/bl_operators/rigidbody.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/startup/bl_operators/screen_play_rendered_anim.py b/release/scripts/startup/bl_operators/screen_play_rendered_anim.py
index 6d60c58cc3a157a4189c51185317db11b35738ea..d3741d14cdb91749a190db69703f2ebead9ab112 100644
--- a/release/scripts/startup/bl_operators/screen_play_rendered_anim.py
+++ b/release/scripts/startup/bl_operators/screen_play_rendered_anim.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/startup/bl_operators/sequencer.py b/release/scripts/startup/bl_operators/sequencer.py
index 1a56e77b7b768267b4bb43e96882b45bc96e530c..0d4cc53173d583b4e61f296446a5033022e788f5 100644
--- a/release/scripts/startup/bl_operators/sequencer.py
+++ b/release/scripts/startup/bl_operators/sequencer.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_operators/spreadsheet.py b/release/scripts/startup/bl_operators/spreadsheet.py
index ba0c9969356e99668d22f2453a27971b7778608a..1ba7d2db2fd8e4de0697f5f0efdc780b1d4b2fb8 100644
--- a/release/scripts/startup/bl_operators/spreadsheet.py
+++ b/release/scripts/startup/bl_operators/spreadsheet.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 from __future__ import annotations
 
diff --git a/release/scripts/startup/bl_operators/userpref.py b/release/scripts/startup/bl_operators/userpref.py
index 1363bcf60e4200a0ed963afeec41a5e83caa7253..49bc2d0a2da60a5c01573005623093b5e1f96649 100644
--- a/release/scripts/startup/bl_operators/userpref.py
+++ b/release/scripts/startup/bl_operators/userpref.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_operators/uvcalc_follow_active.py b/release/scripts/startup/bl_operators/uvcalc_follow_active.py
index 90131109e241c790e1d55ac9a8381ff6a6d461f1..fd5cf5303b364edd847ffb2b2bc79a354215b0db 100644
--- a/release/scripts/startup/bl_operators/uvcalc_follow_active.py
+++ b/release/scripts/startup/bl_operators/uvcalc_follow_active.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_operators/uvcalc_lightmap.py b/release/scripts/startup/bl_operators/uvcalc_lightmap.py
index 6ba8750e9dfa1825026906412ad223ea788a9986..f62b98462dc8cbe1f778372af5039489842ca4cd 100644
--- a/release/scripts/startup/bl_operators/uvcalc_lightmap.py
+++ b/release/scripts/startup/bl_operators/uvcalc_lightmap.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_operators/vertexpaint_dirt.py b/release/scripts/startup/bl_operators/vertexpaint_dirt.py
index 8b2a8b541bef9043481448608dae680eaa45f9bf..8089a65960c6a432d645557fa1d47b02239bd7b6 100644
--- a/release/scripts/startup/bl_operators/vertexpaint_dirt.py
+++ b/release/scripts/startup/bl_operators/vertexpaint_dirt.py
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
-#
-# Copyright Campbell Barton
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright Campbell Barton.
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_operators/view3d.py b/release/scripts/startup/bl_operators/view3d.py
index 0fa82e36d20732a4e6c651029c2711c227f7474b..50cdf1a530e4ccbae8c331b3436cad1932efa9cf 100644
--- a/release/scripts/startup/bl_operators/view3d.py
+++ b/release/scripts/startup/bl_operators/view3d.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/startup/bl_operators/wm.py b/release/scripts/startup/bl_operators/wm.py
index bb85ad8ca50948d7477e0c5984c718667ced11e0..9ba5480cf5a0eed2e6f3cabd0728ab01f14d6540 100644
--- a/release/scripts/startup/bl_operators/wm.py
+++ b/release/scripts/startup/bl_operators/wm.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from __future__ import annotations
diff --git a/release/scripts/startup/bl_ui/__init__.py b/release/scripts/startup/bl_ui/__init__.py
index 7c254596683f9e90a8eec193b6d334b711fff383..63e7e838cf4539ea7a50cfd1bed26284d30c5a8c 100644
--- a/release/scripts/startup/bl_ui/__init__.py
+++ b/release/scripts/startup/bl_ui/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_animviz.py b/release/scripts/startup/bl_ui/properties_animviz.py
index 28e456d023d18dfe5317ae88ce7b6b6cc177fd5d..548ce72c42981bc336846a3cbc8e2aab2f12de5c 100644
--- a/release/scripts/startup/bl_ui/properties_animviz.py
+++ b/release/scripts/startup/bl_ui/properties_animviz.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_collection.py b/release/scripts/startup/bl_ui/properties_collection.py
index 3f7c0735eecf0d3017a7e24c070313cb38fd018d..88c6a4c217d7f3b3a9a0fadf67fe8a3100324c54 100644
--- a/release/scripts/startup/bl_ui/properties_collection.py
+++ b/release/scripts/startup/bl_ui/properties_collection.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bpy.types import Panel
diff --git a/release/scripts/startup/bl_ui/properties_constraint.py b/release/scripts/startup/bl_ui/properties_constraint.py
index fcac0af7e86b413cb854c719051772d3d8484c56..77f454362a444e1ec2e479c48b56c6abe9eee647 100644
--- a/release/scripts/startup/bl_ui/properties_constraint.py
+++ b/release/scripts/startup/bl_ui/properties_constraint.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bpy.types import Panel
diff --git a/release/scripts/startup/bl_ui/properties_data_armature.py b/release/scripts/startup/bl_ui/properties_data_armature.py
index 7fb8791f856ebfe1837056d145c8af611e2d0da5..f8a2cbfed1e598fadfbaceca42390e673a419189 100644
--- a/release/scripts/startup/bl_ui/properties_data_armature.py
+++ b/release/scripts/startup/bl_ui/properties_data_armature.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_data_bone.py b/release/scripts/startup/bl_ui/properties_data_bone.py
index 1a00150d6d2f2888b78e3617777ff6fd8188ba5c..9a790663581d88957ec84b32e67cbd5f6dfa2fe4 100644
--- a/release/scripts/startup/bl_ui/properties_data_bone.py
+++ b/release/scripts/startup/bl_ui/properties_data_bone.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_data_camera.py b/release/scripts/startup/bl_ui/properties_data_camera.py
index edd0623d8feee57a4ca19c97a9d458c1e294d870..696143494fe982330fe97e4691b34a22595459fc 100644
--- a/release/scripts/startup/bl_ui/properties_data_camera.py
+++ b/release/scripts/startup/bl_ui/properties_data_camera.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_data_curve.py b/release/scripts/startup/bl_ui/properties_data_curve.py
index e5b675db2c55a90864be37eb2f6f083189dd3104..26e5cfaae605bc79237c0f4b91a8313faf6b3fb0 100644
--- a/release/scripts/startup/bl_ui/properties_data_curve.py
+++ b/release/scripts/startup/bl_ui/properties_data_curve.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_data_curves.py b/release/scripts/startup/bl_ui/properties_data_curves.py
index 0b4bf0283ed41ebd26b2cab0bdae87e09fd310f3..3e350575bc8f41c6472aaf01d9b060ae5f86cee9 100644
--- a/release/scripts/startup/bl_ui/properties_data_curves.py
+++ b/release/scripts/startup/bl_ui/properties_data_curves.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_data_empty.py b/release/scripts/startup/bl_ui/properties_data_empty.py
index 3f93cb85d37ccd598970eebe527a4909f5b19428..6c5c94e9d6a8aa0dba5cf23ab62587d41e28bbe9 100644
--- a/release/scripts/startup/bl_ui/properties_data_empty.py
+++ b/release/scripts/startup/bl_ui/properties_data_empty.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bpy.types import Panel
diff --git a/release/scripts/startup/bl_ui/properties_data_gpencil.py b/release/scripts/startup/bl_ui/properties_data_gpencil.py
index 34e83573bc94feeec6772284dc4afa408041b9b7..df72b1182dfe261cadcf3c505b3741259c24e9fc 100644
--- a/release/scripts/startup/bl_ui/properties_data_gpencil.py
+++ b/release/scripts/startup/bl_ui/properties_data_gpencil.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_data_lattice.py b/release/scripts/startup/bl_ui/properties_data_lattice.py
index 2193fbb9ffd5471518ce868fab53bc007ba798f4..b4bf09107c5897747aedaf4b2f624c3eac3a186d 100644
--- a/release/scripts/startup/bl_ui/properties_data_lattice.py
+++ b/release/scripts/startup/bl_ui/properties_data_lattice.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_data_light.py b/release/scripts/startup/bl_ui/properties_data_light.py
index d5e0ecd9a4f1972681be8468c5ce07f23f95a49a..aab37ff89ad0da3712fd253d4ec51dc2e363e6ee 100644
--- a/release/scripts/startup/bl_ui/properties_data_light.py
+++ b/release/scripts/startup/bl_ui/properties_data_light.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_data_lightprobe.py b/release/scripts/startup/bl_ui/properties_data_lightprobe.py
index e8244c9c1076f4609388b7f49c83aed83d2c85ea..64ef4c1715096e8836c8809f6004eed9202bcbaf 100644
--- a/release/scripts/startup/bl_ui/properties_data_lightprobe.py
+++ b/release/scripts/startup/bl_ui/properties_data_lightprobe.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bpy.types import Panel
diff --git a/release/scripts/startup/bl_ui/properties_data_mesh.py b/release/scripts/startup/bl_ui/properties_data_mesh.py
index 11e2cd849030a965ef1df3635e0330e549ae642f..8e5f6dba1abd76442d07f8f8d1428f9dd5b0396b 100644
--- a/release/scripts/startup/bl_ui/properties_data_mesh.py
+++ b/release/scripts/startup/bl_ui/properties_data_mesh.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_data_metaball.py b/release/scripts/startup/bl_ui/properties_data_metaball.py
index 25974068ed0f33730b0506c541996d5bee5f1bdc..6c56b44bcb2de8a742d8a45ad05ffc07f6b5e37f 100644
--- a/release/scripts/startup/bl_ui/properties_data_metaball.py
+++ b/release/scripts/startup/bl_ui/properties_data_metaball.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_data_modifier.py b/release/scripts/startup/bl_ui/properties_data_modifier.py
index 392505597411c3b5e87672268c97ec19244f8841..8750bce59237d5a2b678882f94df58aed9229b57 100644
--- a/release/scripts/startup/bl_ui/properties_data_modifier.py
+++ b/release/scripts/startup/bl_ui/properties_data_modifier.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bpy.types import Panel
diff --git a/release/scripts/startup/bl_ui/properties_data_pointcloud.py b/release/scripts/startup/bl_ui/properties_data_pointcloud.py
index 3b7e7a42fd410c404295c265a0f0bb861bacf77d..4f065a9ecfb1736ac36ba243375f0477ea18d8f8 100644
--- a/release/scripts/startup/bl_ui/properties_data_pointcloud.py
+++ b/release/scripts/startup/bl_ui/properties_data_pointcloud.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_data_shaderfx.py b/release/scripts/startup/bl_ui/properties_data_shaderfx.py
index 576910697ad8e6a3f087259c48131304b98b718c..4883a9a2a0358aaab96efdb21e5e8a05373d05e2 100644
--- a/release/scripts/startup/bl_ui/properties_data_shaderfx.py
+++ b/release/scripts/startup/bl_ui/properties_data_shaderfx.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bpy.types import Panel
diff --git a/release/scripts/startup/bl_ui/properties_data_speaker.py b/release/scripts/startup/bl_ui/properties_data_speaker.py
index 10645bdd214aabd6eb65839de1fc2448f55a7937..449ae9f1d252f9f1b1e81d32f2c8b7b7948b5a11 100644
--- a/release/scripts/startup/bl_ui/properties_data_speaker.py
+++ b/release/scripts/startup/bl_ui/properties_data_speaker.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_data_volume.py b/release/scripts/startup/bl_ui/properties_data_volume.py
index 70056b1d27c3e265cf258c2871fb1a1510a2b5dc..9fdcd4c1faa374cbdffa4df3b803813010bf60cd 100644
--- a/release/scripts/startup/bl_ui/properties_data_volume.py
+++ b/release/scripts/startup/bl_ui/properties_data_volume.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_freestyle.py b/release/scripts/startup/bl_ui/properties_freestyle.py
index 802812020b7e0250e631c1684fb9056fd5fa7ecb..98fcf3247a1454cdf1a53d0120e5bb1025bd7b22 100644
--- a/release/scripts/startup/bl_ui/properties_freestyle.py
+++ b/release/scripts/startup/bl_ui/properties_freestyle.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_grease_pencil_common.py b/release/scripts/startup/bl_ui/properties_grease_pencil_common.py
index 6ca13674234767fd64d9ef4afc35e7b69976fca3..c1d6dcfd3f45bd974d5a530f728669bed67a38c7 100644
--- a/release/scripts/startup/bl_ui/properties_grease_pencil_common.py
+++ b/release/scripts/startup/bl_ui/properties_grease_pencil_common.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_mask_common.py b/release/scripts/startup/bl_ui/properties_mask_common.py
index 705539e979c03fc411c5a4c3b6a32d9aa09b07b8..d9f833e391e1bcb4830f72eb474e1383387f087b 100644
--- a/release/scripts/startup/bl_ui/properties_mask_common.py
+++ b/release/scripts/startup/bl_ui/properties_mask_common.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_material.py b/release/scripts/startup/bl_ui/properties_material.py
index 1c7f3639f0adf1a72ef9b0133ee075c1eabac3dd..8c70987b3cf2a757fbbcfdf4fecf88cbfd1d27d0 100644
--- a/release/scripts/startup/bl_ui/properties_material.py
+++ b/release/scripts/startup/bl_ui/properties_material.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_material_gpencil.py b/release/scripts/startup/bl_ui/properties_material_gpencil.py
index 9d099ff223159ab2be8b25f03f32d8853da6c463..35b061ecb21b0cbbd34e985420eab7281e41acc9 100644
--- a/release/scripts/startup/bl_ui/properties_material_gpencil.py
+++ b/release/scripts/startup/bl_ui/properties_material_gpencil.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_object.py b/release/scripts/startup/bl_ui/properties_object.py
index fbd4ed3225a2e428a5c10ddc5f08ff8c9e9445e4..5721e20f3284d91308aa252c40b1f6e363c6b414 100644
--- a/release/scripts/startup/bl_ui/properties_object.py
+++ b/release/scripts/startup/bl_ui/properties_object.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bl_ui.properties_animviz import (
diff --git a/release/scripts/startup/bl_ui/properties_output.py b/release/scripts/startup/bl_ui/properties_output.py
index ff98cbbaa756af3e1f2b41027f498f61ba046873..34e86184097b2970896c38282f08087746eeb3f6 100644
--- a/release/scripts/startup/bl_ui/properties_output.py
+++ b/release/scripts/startup/bl_ui/properties_output.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_paint_common.py b/release/scripts/startup/bl_ui/properties_paint_common.py
index 347f771d1f6d53a582588192dd48314c2943da08..ca623797c4912464f79bf470ac3d43b6ec85200f 100644
--- a/release/scripts/startup/bl_ui/properties_paint_common.py
+++ b/release/scripts/startup/bl_ui/properties_paint_common.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bpy.types import Menu
diff --git a/release/scripts/startup/bl_ui/properties_particle.py b/release/scripts/startup/bl_ui/properties_particle.py
index ae15fda2c69fba50a4ec782b7fcb32a59665d072..0b7a728fa95d317c9203be7ea9fff1030e7023cb 100644
--- a/release/scripts/startup/bl_ui/properties_particle.py
+++ b/release/scripts/startup/bl_ui/properties_particle.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_physics_cloth.py b/release/scripts/startup/bl_ui/properties_physics_cloth.py
index 3a5ca1e04f577c410ff7101877bcc851adbb8dec..c041534a6526e742e099170b355f0f73198dc971 100644
--- a/release/scripts/startup/bl_ui/properties_physics_cloth.py
+++ b/release/scripts/startup/bl_ui/properties_physics_cloth.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_physics_common.py b/release/scripts/startup/bl_ui/properties_physics_common.py
index f13a808e324c0f0d7ecacdafb473cf78a31de315..e9df4622cdefbdea1c0d5e2d9bdb0f1f90dab438 100644
--- a/release/scripts/startup/bl_ui/properties_physics_common.py
+++ b/release/scripts/startup/bl_ui/properties_physics_common.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_physics_dynamicpaint.py b/release/scripts/startup/bl_ui/properties_physics_dynamicpaint.py
index 7e4f9e8370fc24c778eb46045f9c373ac7cc52a9..d9d2a529693f12f719edeb49459e95274a9a660c 100644
--- a/release/scripts/startup/bl_ui/properties_physics_dynamicpaint.py
+++ b/release/scripts/startup/bl_ui/properties_physics_dynamicpaint.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_physics_field.py b/release/scripts/startup/bl_ui/properties_physics_field.py
index 7e017b121b343a1c6543d7c1e4cdbb3795aeb688..c1b213766df97b4deb622ef0ef2cac3a3359fe75 100644
--- a/release/scripts/startup/bl_ui/properties_physics_field.py
+++ b/release/scripts/startup/bl_ui/properties_physics_field.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_physics_fluid.py b/release/scripts/startup/bl_ui/properties_physics_fluid.py
index 47f0b399b66411305411a7f5263b72ecb105b43b..0e8e452c7173b3d387ed3e7843760f5217158a47 100644
--- a/release/scripts/startup/bl_ui/properties_physics_fluid.py
+++ b/release/scripts/startup/bl_ui/properties_physics_fluid.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_physics_rigidbody.py b/release/scripts/startup/bl_ui/properties_physics_rigidbody.py
index 9afe8415cf4729d966178480569ca4d361dd4fca..bf8ab90147bd1ad9f726b169fb867fb7d91ab5a8 100644
--- a/release/scripts/startup/bl_ui/properties_physics_rigidbody.py
+++ b/release/scripts/startup/bl_ui/properties_physics_rigidbody.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_physics_rigidbody_constraint.py b/release/scripts/startup/bl_ui/properties_physics_rigidbody_constraint.py
index 51a0aa3203bad5eac42467fcc3f9f166bd3efc44..21c3b8b080599923c945c6999e01d34a0437552e 100644
--- a/release/scripts/startup/bl_ui/properties_physics_rigidbody_constraint.py
+++ b/release/scripts/startup/bl_ui/properties_physics_rigidbody_constraint.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_physics_softbody.py b/release/scripts/startup/bl_ui/properties_physics_softbody.py
index 3b080822b958c9c5593823ef9ac89e1bab5aaa2b..1b941100db2366ca4f9e4319db436e2456da377f 100644
--- a/release/scripts/startup/bl_ui/properties_physics_softbody.py
+++ b/release/scripts/startup/bl_ui/properties_physics_softbody.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_render.py b/release/scripts/startup/bl_ui/properties_render.py
index 7f76431cc9abc0695d0656f5529f5508d882258c..b7522cbb04ef18192ea265686bc18cf292780b57 100644
--- a/release/scripts/startup/bl_ui/properties_render.py
+++ b/release/scripts/startup/bl_ui/properties_render.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bpy.types import Panel
diff --git a/release/scripts/startup/bl_ui/properties_scene.py b/release/scripts/startup/bl_ui/properties_scene.py
index 8618c201312a54563a57270950744ab04bcd5c29..912f0c8bcaffbdd720f468a251a40204205b0ad9 100644
--- a/release/scripts/startup/bl_ui/properties_scene.py
+++ b/release/scripts/startup/bl_ui/properties_scene.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_texture.py b/release/scripts/startup/bl_ui/properties_texture.py
index 368494793a50780dd940a85743a9dd47049f6cbc..5ceaf8fc644f97f889358e82ae0e0cf8bb38fb68 100644
--- a/release/scripts/startup/bl_ui/properties_texture.py
+++ b/release/scripts/startup/bl_ui/properties_texture.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/properties_view_layer.py b/release/scripts/startup/bl_ui/properties_view_layer.py
index 3ced6a31db5494dbb6084257eca7778eea8d48fb..4dee7b73faf7dcc3c1c84ea080043106a2498cdc 100644
--- a/release/scripts/startup/bl_ui/properties_view_layer.py
+++ b/release/scripts/startup/bl_ui/properties_view_layer.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bpy.types import Panel, UIList
diff --git a/release/scripts/startup/bl_ui/properties_workspace.py b/release/scripts/startup/bl_ui/properties_workspace.py
index 8af30b5c002d5a19f52c6d0eaf039d34b72060be..cb4f768ac4f3a0589ff539d7a18e6eac75e28b72 100644
--- a/release/scripts/startup/bl_ui/properties_workspace.py
+++ b/release/scripts/startup/bl_ui/properties_workspace.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/properties_world.py b/release/scripts/startup/bl_ui/properties_world.py
index 9b61311c2d306ad6907a1542774929585515b1b6..47e990e85735ef35d72d00e8a1d3f9ae731a1199 100644
--- a/release/scripts/startup/bl_ui/properties_world.py
+++ b/release/scripts/startup/bl_ui/properties_world.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/space_clip.py b/release/scripts/startup/bl_ui/space_clip.py
index 86e9ef3d6643632ea41facab95afc37598220e45..c1ecfaceee729ca7e6e498683f2761b167dfa70d 100644
--- a/release/scripts/startup/bl_ui/space_clip.py
+++ b/release/scripts/startup/bl_ui/space_clip.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/release/scripts/startup/bl_ui/space_console.py b/release/scripts/startup/bl_ui/space_console.py
index 54a72cf59d0ff79569e10aa0cfbe3c0196e98cd9..323bee8a125178392a2af7c6e466a294906c89a0 100644
--- a/release/scripts/startup/bl_ui/space_console.py
+++ b/release/scripts/startup/bl_ui/space_console.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/space_dopesheet.py b/release/scripts/startup/bl_ui/space_dopesheet.py
index 99edbe647e20ab04fd87eb97078903c87f72d22b..8e328e7cf2b35048dad966a5cb724b3aef188e6a 100644
--- a/release/scripts/startup/bl_ui/space_dopesheet.py
+++ b/release/scripts/startup/bl_ui/space_dopesheet.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/space_filebrowser.py b/release/scripts/startup/bl_ui/space_filebrowser.py
index 50005a8f7f07078dd434fbdaabee56c17492fd94..e8969c0aa22632a1dad332b4bb806e5a6d18aa54 100644
--- a/release/scripts/startup/bl_ui/space_filebrowser.py
+++ b/release/scripts/startup/bl_ui/space_filebrowser.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/space_graph.py b/release/scripts/startup/bl_ui/space_graph.py
index db0020b784658a518e84e304d5d058f8b6f48a34..6f9ef12c3b79639f154add3292babdb981510590 100644
--- a/release/scripts/startup/bl_ui/space_graph.py
+++ b/release/scripts/startup/bl_ui/space_graph.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/space_image.py b/release/scripts/startup/bl_ui/space_image.py
index 8e82b07716c972e490aa5b5ccfdf554384e35d38..16e3f32e88ac27d8ad06e45e3201c7182271b951 100644
--- a/release/scripts/startup/bl_ui/space_image.py
+++ b/release/scripts/startup/bl_ui/space_image.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/space_info.py b/release/scripts/startup/bl_ui/space_info.py
index 3a97b104271bb4e58b71a2b8c58f5b62eb200376..41c8b99b78c6bfa962064a5dcc042bd7ae482453 100644
--- a/release/scripts/startup/bl_ui/space_info.py
+++ b/release/scripts/startup/bl_ui/space_info.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bpy.types import Header, Menu
diff --git a/release/scripts/startup/bl_ui/space_nla.py b/release/scripts/startup/bl_ui/space_nla.py
index 78c312fd03d5c1277d957adfd37b66a09d7d3df1..99324ac5d50646165d4b23a6dc2136ce209c03b1 100644
--- a/release/scripts/startup/bl_ui/space_nla.py
+++ b/release/scripts/startup/bl_ui/space_nla.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/space_node.py b/release/scripts/startup/bl_ui/space_node.py
index 5cf3a6109d0d87e9350f59257aba1ab1dccc16e1..a89b201d648cdd09982292c6b0a12e8b912fee67 100644
--- a/release/scripts/startup/bl_ui/space_node.py
+++ b/release/scripts/startup/bl_ui/space_node.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/space_outliner.py b/release/scripts/startup/bl_ui/space_outliner.py
index 6cc80c088e06c7c4252ec3dbdbde3b7172433ce3..a2fdea91a8e1d6d71e1c4acd2263b833162750cd 100644
--- a/release/scripts/startup/bl_ui/space_outliner.py
+++ b/release/scripts/startup/bl_ui/space_outliner.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/space_properties.py b/release/scripts/startup/bl_ui/space_properties.py
index b7d5b5007d6ff6cc565afdabe6c4f00b9f30838a..c15611fd375c8acf65e430075145cd63e5314994 100644
--- a/release/scripts/startup/bl_ui/space_properties.py
+++ b/release/scripts/startup/bl_ui/space_properties.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bpy.types import Header, Panel
diff --git a/release/scripts/startup/bl_ui/space_sequencer.py b/release/scripts/startup/bl_ui/space_sequencer.py
index 9c77529229b47af4a8bf8a6b9d1d62c473d9bb4a..f979b5441a12cc046e8e29c9e8c31cd49df0b1fe 100644
--- a/release/scripts/startup/bl_ui/space_sequencer.py
+++ b/release/scripts/startup/bl_ui/space_sequencer.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/space_spreadsheet.py b/release/scripts/startup/bl_ui/space_spreadsheet.py
index 51f8841419b0a2775e6e5c418aaf3941f5b6c302..d6ee747f2630cb5a7d6eb492bfa050d660b560f2 100644
--- a/release/scripts/startup/bl_ui/space_spreadsheet.py
+++ b/release/scripts/startup/bl_ui/space_spreadsheet.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 import bpy
 
diff --git a/release/scripts/startup/bl_ui/space_statusbar.py b/release/scripts/startup/bl_ui/space_statusbar.py
index 616a3ab45fd7a8bf297a3861a1c72275f3b694d3..90e685ac5595fbb35f0978d617097c7aa6d56bab 100644
--- a/release/scripts/startup/bl_ui/space_statusbar.py
+++ b/release/scripts/startup/bl_ui/space_statusbar.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bpy.types import Header
diff --git a/release/scripts/startup/bl_ui/space_text.py b/release/scripts/startup/bl_ui/space_text.py
index 811e7fd41c500ba35eb1eabbaaa16091f50bd2c3..18c309a3456b395d75c74d90e88e597a680b9f38 100644
--- a/release/scripts/startup/bl_ui/space_text.py
+++ b/release/scripts/startup/bl_ui/space_text.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/space_time.py b/release/scripts/startup/bl_ui/space_time.py
index 30967e9746d88d142b9c5c9bfbf2d487bea201c9..5296900fa30c017cb252b0d81f8e320dfa991c70 100644
--- a/release/scripts/startup/bl_ui/space_time.py
+++ b/release/scripts/startup/bl_ui/space_time.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/space_toolsystem_common.py b/release/scripts/startup/bl_ui/space_toolsystem_common.py
index c4dabb5b5bc210a4c3870ac1e7324d9d6c7adf15..411db8781e1350ac498026ab6af2b8f81514d719 100644
--- a/release/scripts/startup/bl_ui/space_toolsystem_common.py
+++ b/release/scripts/startup/bl_ui/space_toolsystem_common.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/space_toolsystem_toolbar.py b/release/scripts/startup/bl_ui/space_toolsystem_toolbar.py
index 889155f18584c3081ae4b145cac1445a336c0527..338bf5a9d5d2edf428cedc42a8048a329d1e76ea 100644
--- a/release/scripts/startup/bl_ui/space_toolsystem_toolbar.py
+++ b/release/scripts/startup/bl_ui/space_toolsystem_toolbar.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/bl_ui/space_topbar.py b/release/scripts/startup/bl_ui/space_topbar.py
index ce854155b88240aa9196fa0a0d348d9a911a554f..493cad6d2db9a1741d36b785b8297755cfbd5b4d 100644
--- a/release/scripts/startup/bl_ui/space_topbar.py
+++ b/release/scripts/startup/bl_ui/space_topbar.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/space_userpref.py b/release/scripts/startup/bl_ui/space_userpref.py
index 26b4229690fdb40e5b5f9e581aa75887d7c5acfb..b6f15ed45a59bfd6e2eae5d052cfa949de6621c0 100644
--- a/release/scripts/startup/bl_ui/space_userpref.py
+++ b/release/scripts/startup/bl_ui/space_userpref.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/space_view3d.py b/release/scripts/startup/bl_ui/space_view3d.py
index a8a26edc55487a20dd40097a80385f804a0170c1..cc2f821b049c9901dbea044677a74b61cb044b80 100644
--- a/release/scripts/startup/bl_ui/space_view3d.py
+++ b/release/scripts/startup/bl_ui/space_view3d.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/release/scripts/startup/bl_ui/space_view3d_toolbar.py b/release/scripts/startup/bl_ui/space_view3d_toolbar.py
index 4bd3d5cc3f2f12d13e709f56bad0ac611af55d6f..f9d3c988a221c8af8a770a017cc41092eda64ee5 100644
--- a/release/scripts/startup/bl_ui/space_view3d_toolbar.py
+++ b/release/scripts/startup/bl_ui/space_view3d_toolbar.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 from bpy.types import Menu, Panel, UIList
diff --git a/release/scripts/startup/bl_ui/utils.py b/release/scripts/startup/bl_ui/utils.py
index 8c7ceefecb6329683ae432f3f92d3cf5ac1d863c..02d2448af666b7466861519491390c3f93b1cb56 100644
--- a/release/scripts/startup/bl_ui/utils.py
+++ b/release/scripts/startup/bl_ui/utils.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/keyingsets_builtins.py b/release/scripts/startup/keyingsets_builtins.py
index d9811b6c0edce475bd5f2b5d30ad4331081b42f6..486137f42471846c76fab88e6adf1321aacaea55 100644
--- a/release/scripts/startup/keyingsets_builtins.py
+++ b/release/scripts/startup/keyingsets_builtins.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/release/scripts/startup/nodeitems_builtins.py b/release/scripts/startup/nodeitems_builtins.py
index 4b48f5f06802fdef1ecfcc7aee73bcab67292615..21e20c3b734aedd790c234330f2f87f89e8c0450 100644
--- a/release/scripts/startup/nodeitems_builtins.py
+++ b/release/scripts/startup/nodeitems_builtins.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 import bpy
diff --git a/source/CMakeLists.txt b/source/CMakeLists.txt
index 73e16c38cb7c1c27182881b0cf15f96e08534f23..ffc4d37f62282a870c1154c157c8c8c74e5c9ede 100644
--- a/source/CMakeLists.txt
+++ b/source/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 if(WITH_LEGACY_OPENGL)
   add_definitions(-DWITH_LEGACY_OPENGL)
diff --git a/source/blender/CMakeLists.txt b/source/blender/CMakeLists.txt
index 1fcde431d2dedf8f8ef3f5f63dc60b0661b7a013..aca3f99d55ffc18e6dc5f004f4a3c6789a5e4f86 100644
--- a/source/blender/CMakeLists.txt
+++ b/source/blender/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(SRC_DNA_INC
   ${CMAKE_CURRENT_SOURCE_DIR}/makesdna/DNA_ID.h
diff --git a/source/blender/blendthumb/CMakeLists.txt b/source/blender/blendthumb/CMakeLists.txt
index d64e942069d5c69fa88333b28e689d7544d0a68d..330cefa247aa67cb2dd5032975fb247a04a0a960 100644
--- a/source/blender/blendthumb/CMakeLists.txt
+++ b/source/blender/blendthumb/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 #-----------------------------------------------------------------------------
 # Shared Thumbnail Extraction Logic
diff --git a/source/blender/blendthumb/src/blender_thumbnailer.cc b/source/blender/blendthumb/src/blender_thumbnailer.cc
index 8dd9d5c0c0a90f84d77e2bc924e44e4e5d685c8e..da0aef3d0e1dba552cdf38327b43da50bb51341d 100644
--- a/source/blender/blendthumb/src/blender_thumbnailer.cc
+++ b/source/blender/blendthumb/src/blender_thumbnailer.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blendthumb
diff --git a/source/blender/blendthumb/src/blendthumb.hh b/source/blender/blendthumb/src/blendthumb.hh
index 0bcb160519e51a8ce90effe031c419d43c3ea9fe..bcee920fd0eb485f510e1a2ace9266bce068deb4 100644
--- a/source/blender/blendthumb/src/blendthumb.hh
+++ b/source/blender/blendthumb/src/blendthumb.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008-2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008-2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blendthumb
diff --git a/source/blender/blendthumb/src/blendthumb_extract.cc b/source/blender/blendthumb/src/blendthumb_extract.cc
index 2d14a88c904545ca87dfca579b0428d7033e8853..de1f50dfdcea5b97aca742a3708b85ecd45d6953 100644
--- a/source/blender/blendthumb/src/blendthumb_extract.cc
+++ b/source/blender/blendthumb/src/blendthumb_extract.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blendthumb
diff --git a/source/blender/blendthumb/src/blendthumb_png.cc b/source/blender/blendthumb/src/blendthumb_png.cc
index d815615007886c0065c8765b48a384dc69bee7f4..64326c9abb1569aa8c4e6b3f30e661f7dec015e4 100644
--- a/source/blender/blendthumb/src/blendthumb_png.cc
+++ b/source/blender/blendthumb/src/blendthumb_png.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blendthumb
diff --git a/source/blender/blendthumb/src/blendthumb_win32.cc b/source/blender/blendthumb/src/blendthumb_win32.cc
index d757bb1c97e0fd37f32cc76476a32d1f89686fe4..287710934e24071468e8ef115827b39494314bb7 100644
--- a/source/blender/blendthumb/src/blendthumb_win32.cc
+++ b/source/blender/blendthumb/src/blendthumb_win32.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blendthumb
diff --git a/source/blender/blendthumb/src/blendthumb_win32_dll.cc b/source/blender/blendthumb/src/blendthumb_win32_dll.cc
index 7f10777f88409dcdc65715fc4bdfb5d16db26697..4247d20bc6eac16fafe75026de564025fc23f5ab 100644
--- a/source/blender/blendthumb/src/blendthumb_win32_dll.cc
+++ b/source/blender/blendthumb/src/blendthumb_win32_dll.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blendthumb
diff --git a/source/blender/blenfont/BLF_api.h b/source/blender/blenfont/BLF_api.h
index 638c5b727a64a354584dd8a13d2e1ddd8e6c3fd5..3817fe59f95f2c7a37884437d7a65fe0bb8b0b42 100644
--- a/source/blender/blenfont/BLF_api.h
+++ b/source/blender/blenfont/BLF_api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blf
diff --git a/source/blender/blenfont/CMakeLists.txt b/source/blender/blenfont/CMakeLists.txt
index 5d04823cd0ac3e2530ab2add07356c4d5e40d7d1..a2b84290e6749940ac6a25907860e9cf3c4fb1d9 100644
--- a/source/blender/blenfont/CMakeLists.txt
+++ b/source/blender/blenfont/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2008, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2008 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/blenfont/intern/blf.c b/source/blender/blenfont/intern/blf.c
index c69a0b1eb7379a5195dbc2f3a00ba87c7df5fed3..043d6da7d734de81eee6580e0d3e3ab1f160b352 100644
--- a/source/blender/blenfont/intern/blf.c
+++ b/source/blender/blenfont/intern/blf.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blf
diff --git a/source/blender/blenfont/intern/blf_default.c b/source/blender/blenfont/intern/blf_default.c
index d5a0d514b5fd8928dd2fc7ee833af8e824124fd6..a1f1b84636f3a53b4590c7d7d49f8133d25772a2 100644
--- a/source/blender/blenfont/intern/blf_default.c
+++ b/source/blender/blenfont/intern/blf_default.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blf
diff --git a/source/blender/blenfont/intern/blf_dir.c b/source/blender/blenfont/intern/blf_dir.c
index 8eb148a8a9a8146f267461da32372f72ef7fda79..69b44ed9b01a6e7e410c57e1d48555d1bac8c079 100644
--- a/source/blender/blenfont/intern/blf_dir.c
+++ b/source/blender/blenfont/intern/blf_dir.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blf
diff --git a/source/blender/blenfont/intern/blf_font.c b/source/blender/blenfont/intern/blf_font.c
index 3ac9fdc7f412af7c57b1648ceba8a208745a5c23..c4bd22d1310951a6b3bcac15abe01a127ae5394f 100644
--- a/source/blender/blenfont/intern/blf_font.c
+++ b/source/blender/blenfont/intern/blf_font.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blf
diff --git a/source/blender/blenfont/intern/blf_font_default.c b/source/blender/blenfont/intern/blf_font_default.c
index f33d7cd4203a8bb49ac0bf9738a33bd101439415..3a68423e64e927870d0183f9f9ab3f46f64ecdf3 100644
--- a/source/blender/blenfont/intern/blf_font_default.c
+++ b/source/blender/blenfont/intern/blf_font_default.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blf
diff --git a/source/blender/blenfont/intern/blf_font_win32_compat.c b/source/blender/blenfont/intern/blf_font_win32_compat.c
index e573d3bd22447d9bf2da64ed6d697f9c10693b40..17213275c747e61da010db138953479d6cdda5d1 100644
--- a/source/blender/blenfont/intern/blf_font_win32_compat.c
+++ b/source/blender/blenfont/intern/blf_font_win32_compat.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blf
diff --git a/source/blender/blenfont/intern/blf_glyph.c b/source/blender/blenfont/intern/blf_glyph.c
index bcd9e1fb3a22ef7faccc58a51bfbe0b9034d9b74..4810e46b1d21f1f23cb1f5608bed678645e2da28 100644
--- a/source/blender/blenfont/intern/blf_glyph.c
+++ b/source/blender/blenfont/intern/blf_glyph.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blf
diff --git a/source/blender/blenfont/intern/blf_internal.h b/source/blender/blenfont/intern/blf_internal.h
index d0bb3385e2cb46a3bcf4448a98bef91e9bb8a5eb..14e1a8f72d1f555320ea3c77f685d54438cdacfa 100644
--- a/source/blender/blenfont/intern/blf_internal.h
+++ b/source/blender/blenfont/intern/blf_internal.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blf
diff --git a/source/blender/blenfont/intern/blf_internal_types.h b/source/blender/blenfont/intern/blf_internal_types.h
index c96febd71aecf3fabf0c73c36c0fece469b1f857..61b6edc4974df245c8b5f5c1f00286b333b8ed37 100644
--- a/source/blender/blenfont/intern/blf_internal_types.h
+++ b/source/blender/blenfont/intern/blf_internal_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blf
diff --git a/source/blender/blenfont/intern/blf_thumbs.c b/source/blender/blenfont/intern/blf_thumbs.c
index f666976547ec03cb838cba382f2c932a44eac242..9d9a8a51d0f3e3e2e6c691b801c4164ae038a694 100644
--- a/source/blender/blenfont/intern/blf_thumbs.c
+++ b/source/blender/blenfont/intern/blf_thumbs.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blf
diff --git a/source/blender/blenfont/intern/blf_util.c b/source/blender/blenfont/intern/blf_util.c
index a70a9ea6819cc3a4716083b6174cde374edba4ea..09ddb56e53b97dc7b4a316ca8236d1279db2d39d 100644
--- a/source/blender/blenfont/intern/blf_util.c
+++ b/source/blender/blenfont/intern/blf_util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blf
diff --git a/source/blender/blenkernel/BKE_DerivedMesh.h b/source/blender/blenkernel/BKE_DerivedMesh.h
index 4526bc38a70ac906b3f0f54bc84301c55498e0d8..f1c523c6cd22379194e670072421ab2cedf65e44 100644
--- a/source/blender/blenkernel/BKE_DerivedMesh.h
+++ b/source/blender/blenkernel/BKE_DerivedMesh.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_action.h b/source/blender/blenkernel/BKE_action.h
index 5d1b4baedfd7d9bc81741e4fab3a8003efe87c0f..328089b14aa6ff3b33c691db15fd17356987d949 100644
--- a/source/blender/blenkernel/BKE_action.h
+++ b/source/blender/blenkernel/BKE_action.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_action.hh b/source/blender/blenkernel/BKE_action.hh
index 9b033713dc78cc09c1a163616dc327fb9ffbac0e..6809fe0f47ab8a3c05766b1062331e97d0b04c9b 100644
--- a/source/blender/blenkernel/BKE_action.hh
+++ b/source/blender/blenkernel/BKE_action.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_addon.h b/source/blender/blenkernel/BKE_addon.h
index 03d29d47a839a698571a2dca419dd9ec88d09121..46ca180ccdfed81a5f7b8fc8909d8252ac73fbf0 100644
--- a/source/blender/blenkernel/BKE_addon.h
+++ b/source/blender/blenkernel/BKE_addon.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_anim_data.h b/source/blender/blenkernel/BKE_anim_data.h
index 81c49917b63cdd4c7ff66070a2be0ff786fd2370..5575f0d56c6a5173a461f12878752f4849b038a8 100644
--- a/source/blender/blenkernel/BKE_anim_data.h
+++ b/source/blender/blenkernel/BKE_anim_data.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_anim_path.h b/source/blender/blenkernel/BKE_anim_path.h
index 6bc09eb35ed6a6e557eaaa3106d58ccab29959d8..ca905bfe47e3e5f51ac47a3e007e3ef3fe33474d 100644
--- a/source/blender/blenkernel/BKE_anim_path.h
+++ b/source/blender/blenkernel/BKE_anim_path.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_anim_visualization.h b/source/blender/blenkernel/BKE_anim_visualization.h
index 3b8c91b7fd290acbccb0c938f438c18886f2b0d3..c8a7642af62dd1594a664f6a6aff0fb152852e92 100644
--- a/source/blender/blenkernel/BKE_anim_visualization.h
+++ b/source/blender/blenkernel/BKE_anim_visualization.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_animsys.h b/source/blender/blenkernel/BKE_animsys.h
index 4845807de3999950e9fde993f0e1bf3a01588c62..bc6936ea21c525bae6a12686a57322b1021a0649 100644
--- a/source/blender/blenkernel/BKE_animsys.h
+++ b/source/blender/blenkernel/BKE_animsys.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_anonymous_attribute.h b/source/blender/blenkernel/BKE_anonymous_attribute.h
index ebdb0b05160bb9e79b06f04b95b6ffb2f9c5aa4d..ab26f2c6224b16caa87f0760627f069287927884 100644
--- a/source/blender/blenkernel/BKE_anonymous_attribute.h
+++ b/source/blender/blenkernel/BKE_anonymous_attribute.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_anonymous_attribute.hh b/source/blender/blenkernel/BKE_anonymous_attribute.hh
index 56e6335c7c01244b75e3a9830153903ef285b824..d9161bda5722259632998c9c8aa6ac94e728b629 100644
--- a/source/blender/blenkernel/BKE_anonymous_attribute.hh
+++ b/source/blender/blenkernel/BKE_anonymous_attribute.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_appdir.h b/source/blender/blenkernel/BKE_appdir.h
index a7baaed141f58dd5155488d7a41e98b2cf31c886..dcacc2ca7b3895b216b3d12ab4668e58d4264e62 100644
--- a/source/blender/blenkernel/BKE_appdir.h
+++ b/source/blender/blenkernel/BKE_appdir.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_armature.h b/source/blender/blenkernel/BKE_armature.h
index ede300b19ddfa43fe1ac3c66bdeb9ba77bff3d78..6765fb3ef088faaa6f4c85a0a853c52ee3704e12 100644
--- a/source/blender/blenkernel/BKE_armature.h
+++ b/source/blender/blenkernel/BKE_armature.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_armature.hh b/source/blender/blenkernel/BKE_armature.hh
index e3f5b528156b1bd29fc17399a8e7b0f41a029188..ca1c4ceeafb26216bb20cd575f47e0666544fe68 100644
--- a/source/blender/blenkernel/BKE_armature.hh
+++ b/source/blender/blenkernel/BKE_armature.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_asset.h b/source/blender/blenkernel/BKE_asset.h
index 58c50fb736f1f49c682cad88f66f970c68b00bc6..81b520a1db05670d7b9e42acc1d10439359ff88d 100644
--- a/source/blender/blenkernel/BKE_asset.h
+++ b/source/blender/blenkernel/BKE_asset.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_asset_catalog.hh b/source/blender/blenkernel/BKE_asset_catalog.hh
index 004b70c2925426fa65bd5ab793fac2cca983e16e..caed12d4fdf3076a7e874d0385066c6b0fc6f369 100644
--- a/source/blender/blenkernel/BKE_asset_catalog.hh
+++ b/source/blender/blenkernel/BKE_asset_catalog.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_asset_catalog_path.hh b/source/blender/blenkernel/BKE_asset_catalog_path.hh
index f51232334f212ff960457196616e29330a6a402c..135906dd064db88ccf24b995f0fce2cf2ddecb4b 100644
--- a/source/blender/blenkernel/BKE_asset_catalog_path.hh
+++ b/source/blender/blenkernel/BKE_asset_catalog_path.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_asset_library.h b/source/blender/blenkernel/BKE_asset_library.h
index ca12fd6f4fb575c2dbc283fdec02c4d19357709d..824bc24203de704016726f261abc8da05c4c716d 100644
--- a/source/blender/blenkernel/BKE_asset_library.h
+++ b/source/blender/blenkernel/BKE_asset_library.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_asset_library.hh b/source/blender/blenkernel/BKE_asset_library.hh
index 37e2ad38a297012cbbeb889f13f15f941a096f24..e0a39e3aee8bcedd1e9582fdc1879657f3a2dd9e 100644
--- a/source/blender/blenkernel/BKE_asset_library.hh
+++ b/source/blender/blenkernel/BKE_asset_library.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_attribute.h b/source/blender/blenkernel/BKE_attribute.h
index ff207997e791e4139a549db51b927793dbdf39e8..1987c925385fc3ad52e0639f7c647223123282ee 100644
--- a/source/blender/blenkernel/BKE_attribute.h
+++ b/source/blender/blenkernel/BKE_attribute.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_attribute_access.hh b/source/blender/blenkernel/BKE_attribute_access.hh
index 3ffdcee05eb6834a1fd6eb5a21786bb1bfb19d2a..0d63bb88de123c055857b9703169d6c2ae5ab80c 100644
--- a/source/blender/blenkernel/BKE_attribute_access.hh
+++ b/source/blender/blenkernel/BKE_attribute_access.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_attribute_math.hh b/source/blender/blenkernel/BKE_attribute_math.hh
index bf773cd6d7596b61938e932427368cc849e27be1..a81ab78a621944fa4b12c444c1b3d5bebf72c386 100644
--- a/source/blender/blenkernel/BKE_attribute_math.hh
+++ b/source/blender/blenkernel/BKE_attribute_math.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_autoexec.h b/source/blender/blenkernel/BKE_autoexec.h
index 55bb3e8877fb9343a6151c5293f5c7e0aded221c..c0d46d114472afd293f86df92395080a1e4e3526 100644
--- a/source/blender/blenkernel/BKE_autoexec.h
+++ b/source/blender/blenkernel/BKE_autoexec.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_blender.h b/source/blender/blenkernel/BKE_blender.h
index 8c0512edb1d09d82cf333cdb537ff59173879197..b42073eeb9a95f1865cb3ee0ea62a4a3ba1969ad 100644
--- a/source/blender/blenkernel/BKE_blender.h
+++ b/source/blender/blenkernel/BKE_blender.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_blender_copybuffer.h b/source/blender/blenkernel/BKE_blender_copybuffer.h
index d1faf88a90ca4b46916651d35e11b77f49e92d6f..bb9e99e69be2488af5d5d9eef9882786bf99e331 100644
--- a/source/blender/blenkernel/BKE_blender_copybuffer.h
+++ b/source/blender/blenkernel/BKE_blender_copybuffer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_blender_undo.h b/source/blender/blenkernel/BKE_blender_undo.h
index d60d048ee5fbdda3317743358dbebe4b3fbed639..3003fe2596d045ad0bac047532d35c3c9f85f787 100644
--- a/source/blender/blenkernel/BKE_blender_undo.h
+++ b/source/blender/blenkernel/BKE_blender_undo.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_blender_user_menu.h b/source/blender/blenkernel/BKE_blender_user_menu.h
index 8d00cde488e7a3cd0152634b7928445aeab08593..1a767f7e2aa5ac40818ab83cbc930d83d092f10f 100644
--- a/source/blender/blenkernel/BKE_blender_user_menu.h
+++ b/source/blender/blenkernel/BKE_blender_user_menu.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_blender_version.h b/source/blender/blenkernel/BKE_blender_version.h
index 1ba887903c81b49648751446b3f3862c4995155a..21bbb4ce9adffec734151696f880425394a72728 100644
--- a/source/blender/blenkernel/BKE_blender_version.h
+++ b/source/blender/blenkernel/BKE_blender_version.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 #ifdef __cplusplus
diff --git a/source/blender/blenkernel/BKE_blendfile.h b/source/blender/blenkernel/BKE_blendfile.h
index db86d4685b7843ac531187e8263b0e9f3d24bdbf..feee80b4edcb65780b6b2f4d69aff3bcd8464a1e 100644
--- a/source/blender/blenkernel/BKE_blendfile.h
+++ b/source/blender/blenkernel/BKE_blendfile.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_blendfile_link_append.h b/source/blender/blenkernel/BKE_blendfile_link_append.h
index 983c93223a14667cdad41b8d4259b11761f45d07..b70f2c2563affd32587f0b55311067e4ca6ed1f8 100644
--- a/source/blender/blenkernel/BKE_blendfile_link_append.h
+++ b/source/blender/blenkernel/BKE_blendfile_link_append.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_boids.h b/source/blender/blenkernel/BKE_boids.h
index a9c8ad6422fdf3062fe76204bbd4c019d459f885..d9dcd8818f981379578703601eedc91c3d808e0a 100644
--- a/source/blender/blenkernel/BKE_boids.h
+++ b/source/blender/blenkernel/BKE_boids.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 by Janne Karhu. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_bpath.h b/source/blender/blenkernel/BKE_bpath.h
index ccbd0d4cbe46b820de5d0000a64a61e7226e33a0..ea6049e87dae6a7520404a244db1309f84516ebd 100644
--- a/source/blender/blenkernel/BKE_bpath.h
+++ b/source/blender/blenkernel/BKE_bpath.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_brush.h b/source/blender/blenkernel/BKE_brush.h
index ee5ab905d7084e5f75ef7596333a5ec311ecc72f..c3a2aba18b50d28de8e8b7814bf5b45673b42115 100644
--- a/source/blender/blenkernel/BKE_brush.h
+++ b/source/blender/blenkernel/BKE_brush.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_bvhutils.h b/source/blender/blenkernel/BKE_bvhutils.h
index c454e441551e36cef5fd7924928df0b74c94bc6d..6bf4f3acc1588b8c40bb5e850d814c03348674d3 100644
--- a/source/blender/blenkernel/BKE_bvhutils.h
+++ b/source/blender/blenkernel/BKE_bvhutils.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_cachefile.h b/source/blender/blenkernel/BKE_cachefile.h
index c6821d88d2a5b92bb008c42544b0f0628994217e..425207398a0606857919ade253e76282c03fc1dd 100644
--- a/source/blender/blenkernel/BKE_cachefile.h
+++ b/source/blender/blenkernel/BKE_cachefile.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_callbacks.h b/source/blender/blenkernel/BKE_callbacks.h
index 2e4923ff3d260e7700722d6daeb290c49b057b7e..66089d29c45ed93791dcbb60e8df5fd1667db536 100644
--- a/source/blender/blenkernel/BKE_callbacks.h
+++ b/source/blender/blenkernel/BKE_callbacks.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_camera.h b/source/blender/blenkernel/BKE_camera.h
index 550ce4eb60143aefd8d636ea1022114d28b9f599..9d254bba8e747e67135d1e6195056ce0e568c75b 100644
--- a/source/blender/blenkernel/BKE_camera.h
+++ b/source/blender/blenkernel/BKE_camera.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_ccg.h b/source/blender/blenkernel/BKE_ccg.h
index acdaa81da8d4192b7c6e518178c143ad8b7c438e..786b84a0469356507f75c4ccbf64573650a4becc 100644
--- a/source/blender/blenkernel/BKE_ccg.h
+++ b/source/blender/blenkernel/BKE_ccg.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 by Nicholas Bishop.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 by Nicholas Bishop. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_cdderivedmesh.h b/source/blender/blenkernel/BKE_cdderivedmesh.h
index 7695193d619abced2e67d9cec264591129fb9e85..3c929857c14a2c2a053e98b08d3f93b1c3c67032 100644
--- a/source/blender/blenkernel/BKE_cdderivedmesh.h
+++ b/source/blender/blenkernel/BKE_cdderivedmesh.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_cloth.h b/source/blender/blenkernel/BKE_cloth.h
index ee73b926886aa7640d66f8433cf7a522154d79ac..6af38b14ea4b5279733330fad494c9e87e3af303 100644
--- a/source/blender/blenkernel/BKE_cloth.h
+++ b/source/blender/blenkernel/BKE_cloth.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_collection.h b/source/blender/blenkernel/BKE_collection.h
index 467d74b17dac32b47ff34ce2da0080e9213b8d20..7f4360d2e9c0e0b2fd97481d0e4764122682712b 100644
--- a/source/blender/blenkernel/BKE_collection.h
+++ b/source/blender/blenkernel/BKE_collection.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_collision.h b/source/blender/blenkernel/BKE_collision.h
index d4c5c03ea791833ab0862d173d5a5e6c51a25d67..b93babaaefad522db805c883c3a68ea5a7129b3a 100644
--- a/source/blender/blenkernel/BKE_collision.h
+++ b/source/blender/blenkernel/BKE_collision.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_colorband.h b/source/blender/blenkernel/BKE_colorband.h
index 554b0f36b60f0e95a515289e1c22b2f0b048faf5..56a2cbca5a8fbb9c1330b0e9a6db1cb81cf8881c 100644
--- a/source/blender/blenkernel/BKE_colorband.h
+++ b/source/blender/blenkernel/BKE_colorband.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_colortools.h b/source/blender/blenkernel/BKE_colortools.h
index 5ded49106daf74c35d38b9608e62c5aba055342d..0d4560207ea68e196d86397e5321ae634e9f1c23 100644
--- a/source/blender/blenkernel/BKE_colortools.h
+++ b/source/blender/blenkernel/BKE_colortools.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_constraint.h b/source/blender/blenkernel/BKE_constraint.h
index 2da79e275764c58844b255c846c387020c4b7d57..b3119666f0a5aeb3d195fad2875e6c18cc1d1a42 100644
--- a/source/blender/blenkernel/BKE_constraint.h
+++ b/source/blender/blenkernel/BKE_constraint.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_context.h b/source/blender/blenkernel/BKE_context.h
index 18c1848b737e4db9a98acc1e3990595768a39a2e..80a500fe3c0cb742ec02796521926ef994d9987e 100644
--- a/source/blender/blenkernel/BKE_context.h
+++ b/source/blender/blenkernel/BKE_context.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_crazyspace.h b/source/blender/blenkernel/BKE_crazyspace.h
index 42d85c70bc19dd05507029926937a8427db0b92b..8c1761c98a4216197fadb7555b705bd9a437bdbb 100644
--- a/source/blender/blenkernel/BKE_crazyspace.h
+++ b/source/blender/blenkernel/BKE_crazyspace.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_cryptomatte.h b/source/blender/blenkernel/BKE_cryptomatte.h
index 64fbb00b143977cf33c8dfdca724b406d84e196e..56049ecf405595fa9e0cf061c4561c2cc4e564f8 100644
--- a/source/blender/blenkernel/BKE_cryptomatte.h
+++ b/source/blender/blenkernel/BKE_cryptomatte.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_cryptomatte.hh b/source/blender/blenkernel/BKE_cryptomatte.hh
index aa82166aa70ee1a020a1c37f2d824086953a8c34..0c576e5e48ebd85a06fadf0d445e1ef44296fd1d 100644
--- a/source/blender/blenkernel/BKE_cryptomatte.hh
+++ b/source/blender/blenkernel/BKE_cryptomatte.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_curve.h b/source/blender/blenkernel/BKE_curve.h
index 25d49544330c7f682888c312174ae4d45b93bb34..3f65ce83b3f3333fbdf5c295abe09d4da3bb93a9 100644
--- a/source/blender/blenkernel/BKE_curve.h
+++ b/source/blender/blenkernel/BKE_curve.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_curve_to_mesh.hh b/source/blender/blenkernel/BKE_curve_to_mesh.hh
index 10649e8703f0dcd28ea01dbeecc3c5381f8b1561..a49cb6eb7f5a34e451e31634258cf7deb894d97c 100644
--- a/source/blender/blenkernel/BKE_curve_to_mesh.hh
+++ b/source/blender/blenkernel/BKE_curve_to_mesh.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_curveprofile.h b/source/blender/blenkernel/BKE_curveprofile.h
index aa79f29760d236a334bfeaf441dd828b1f2e8272..2ba8c9ca10948dcb41e3a75af5cae9f882b3d2f4 100644
--- a/source/blender/blenkernel/BKE_curveprofile.h
+++ b/source/blender/blenkernel/BKE_curveprofile.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_curves.h b/source/blender/blenkernel/BKE_curves.h
index 99839b2012140f2d213b9a4733e251c667ce1db8..7ad915b50d7f157c71b68c9da119b0cd94a705de 100644
--- a/source/blender/blenkernel/BKE_curves.h
+++ b/source/blender/blenkernel/BKE_curves.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_customdata.h b/source/blender/blenkernel/BKE_customdata.h
index 38b43e36febf05542dac1c31a0f83149a72999ce..dc9d8566d36ad7746f0b2b35d8794a174a9eb782 100644
--- a/source/blender/blenkernel/BKE_customdata.h
+++ b/source/blender/blenkernel/BKE_customdata.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_customdata_file.h b/source/blender/blenkernel/BKE_customdata_file.h
index f9f02204bb978a061843bde3f046f3f3b4c71784..9d45d28bd182848fe533b9363212a92d3aeaa0ad 100644
--- a/source/blender/blenkernel/BKE_customdata_file.h
+++ b/source/blender/blenkernel/BKE_customdata_file.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_data_transfer.h b/source/blender/blenkernel/BKE_data_transfer.h
index 42cf2256e8c74b43ed6113648216770044ba7ac6..fcf84edeb23d65dc125f4135b15f99f7edd76cd7 100644
--- a/source/blender/blenkernel/BKE_data_transfer.h
+++ b/source/blender/blenkernel/BKE_data_transfer.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_deform.h b/source/blender/blenkernel/BKE_deform.h
index ca0ca03f099db3843eabce492beb74222a41935c..1b225884b14222932a0154f402598ce950bb6b82 100644
--- a/source/blender/blenkernel/BKE_deform.h
+++ b/source/blender/blenkernel/BKE_deform.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_displist.h b/source/blender/blenkernel/BKE_displist.h
index 6467ad36989022e870d89426a4edd1b71cc38b22..7a21e85e310255dc1e7f5be26f53e24fc4c7f2a6 100644
--- a/source/blender/blenkernel/BKE_displist.h
+++ b/source/blender/blenkernel/BKE_displist.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_displist_tangent.h b/source/blender/blenkernel/BKE_displist_tangent.h
index c91c2c97dda24327fc683ca2a0b2ece8c84502ca..c439ed5f8a4366a3e73dae862141a5a4e74372c6 100644
--- a/source/blender/blenkernel/BKE_displist_tangent.h
+++ b/source/blender/blenkernel/BKE_displist_tangent.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_duplilist.h b/source/blender/blenkernel/BKE_duplilist.h
index 303a83d921f4222e280a9d3153d5b89a8ebc33eb..0648cdde5291954b5c31182686e8be4704bdf0c7 100644
--- a/source/blender/blenkernel/BKE_duplilist.h
+++ b/source/blender/blenkernel/BKE_duplilist.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_dynamicpaint.h b/source/blender/blenkernel/BKE_dynamicpaint.h
index 4b34a9490c4d8a727b20bcc44a62807ec66b6bdb..5a1c99774fd4ddd3591d5ece48f9375e7e1b0ad2 100644
--- a/source/blender/blenkernel/BKE_dynamicpaint.h
+++ b/source/blender/blenkernel/BKE_dynamicpaint.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_editlattice.h b/source/blender/blenkernel/BKE_editlattice.h
index be791487c277cf2a749a835f2c91b751a1fa2393..4494b6deffd259cdc9e0f77477d3c4de9cdd6345 100644
--- a/source/blender/blenkernel/BKE_editlattice.h
+++ b/source/blender/blenkernel/BKE_editlattice.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_editmesh.h b/source/blender/blenkernel/BKE_editmesh.h
index 1da7ae3da8a297502c2e5d3f64aa0a5f10a11475..4cc9bd97169f2f60973ec8c0ace05bafa5fa54bb 100644
--- a/source/blender/blenkernel/BKE_editmesh.h
+++ b/source/blender/blenkernel/BKE_editmesh.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_editmesh_bvh.h b/source/blender/blenkernel/BKE_editmesh_bvh.h
index b4368ff363bf87b0ddbb8889b46650487e58beda..34782b9ad577a216f1084959fb9d4b08381ccd35 100644
--- a/source/blender/blenkernel/BKE_editmesh_bvh.h
+++ b/source/blender/blenkernel/BKE_editmesh_bvh.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_editmesh_cache.h b/source/blender/blenkernel/BKE_editmesh_cache.h
index bc2a70124fe93d393276b17e9073d08b39c0691d..2640356ccf67e4741d53019fccffa694ba6fca01 100644
--- a/source/blender/blenkernel/BKE_editmesh_cache.h
+++ b/source/blender/blenkernel/BKE_editmesh_cache.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_editmesh_tangent.h b/source/blender/blenkernel/BKE_editmesh_tangent.h
index 3b0569b869ab62b26be797b69986295853910a36..ee1fda2e5db8fbcbf2acb8e5379974dd3438396e 100644
--- a/source/blender/blenkernel/BKE_editmesh_tangent.h
+++ b/source/blender/blenkernel/BKE_editmesh_tangent.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_effect.h b/source/blender/blenkernel/BKE_effect.h
index f33ca2f03d1881f912a8552d55bc61604c511685..113f9ac3b4cce8a7498e55d6670ea8e05905574d 100644
--- a/source/blender/blenkernel/BKE_effect.h
+++ b/source/blender/blenkernel/BKE_effect.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_fcurve.h b/source/blender/blenkernel/BKE_fcurve.h
index 121ec7f316bb2dc3bd994819c75ba4efe2d8624e..cdee166251c6c321cd2ac38cc983d38f86ef9071 100644
--- a/source/blender/blenkernel/BKE_fcurve.h
+++ b/source/blender/blenkernel/BKE_fcurve.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_fcurve_driver.h b/source/blender/blenkernel/BKE_fcurve_driver.h
index 20667c4dfba2b0a6bff2d4acf748c4c70e162f25..b6b1bdab109ee63e5940fafd574f60d677c40dad 100644
--- a/source/blender/blenkernel/BKE_fcurve_driver.h
+++ b/source/blender/blenkernel/BKE_fcurve_driver.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_fluid.h b/source/blender/blenkernel/BKE_fluid.h
index 88df8e52dcafe7056a785a86c75cb590b3a933ba..83cb1b1f40a8bf5fbf3fe2fbd7ab593a73721a0e 100644
--- a/source/blender/blenkernel/BKE_fluid.h
+++ b/source/blender/blenkernel/BKE_fluid.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_freestyle.h b/source/blender/blenkernel/BKE_freestyle.h
index 3a4301aad6d885960552fb078bfde48a30cd92bd..e232206200c31f9dd88f647ec092bb64eefb709d 100644
--- a/source/blender/blenkernel/BKE_freestyle.h
+++ b/source/blender/blenkernel/BKE_freestyle.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_geometry_set.h b/source/blender/blenkernel/BKE_geometry_set.h
index 2d6218f10365d6dc14fd5366d4f2e7d55772a6e6..a28e9e6bdf6dc22a9294047cb6723a41f0ac5d5e 100644
--- a/source/blender/blenkernel/BKE_geometry_set.h
+++ b/source/blender/blenkernel/BKE_geometry_set.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_geometry_set.hh b/source/blender/blenkernel/BKE_geometry_set.hh
index f92f33b2776d7af1761d7d6ba02deb721af54f02..7c55c53ed66c281c1941303246b38044a72f1f8e 100644
--- a/source/blender/blenkernel/BKE_geometry_set.hh
+++ b/source/blender/blenkernel/BKE_geometry_set.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_geometry_set_instances.hh b/source/blender/blenkernel/BKE_geometry_set_instances.hh
index 98120b07f2d23fbb78772c9c98f8d872a0d21763..dd4cfd69cb1ec7fefec1a39cdc6a34cc7c15a640 100644
--- a/source/blender/blenkernel/BKE_geometry_set_instances.hh
+++ b/source/blender/blenkernel/BKE_geometry_set_instances.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_global.h b/source/blender/blenkernel/BKE_global.h
index 0c17636be03b864f1c47b2465e95ff453e4db425..d82e7460071e1ed4af4da2fccf0e9bdcd0ce6f3d 100644
--- a/source/blender/blenkernel/BKE_global.h
+++ b/source/blender/blenkernel/BKE_global.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_gpencil.h b/source/blender/blenkernel/BKE_gpencil.h
index 7c627ea666428612bb3601db1f7e025a48a03ead..a40a354eef7cb7b2f69f0094ba467145b021d0db 100644
--- a/source/blender/blenkernel/BKE_gpencil.h
+++ b/source/blender/blenkernel/BKE_gpencil.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_gpencil_curve.h b/source/blender/blenkernel/BKE_gpencil_curve.h
index 5c5f96c17f1f80ae334c36418e70b2924a2606a4..28eafe643f1ca2cb8702a7f2acc82bec50fdfb93 100644
--- a/source/blender/blenkernel/BKE_gpencil_curve.h
+++ b/source/blender/blenkernel/BKE_gpencil_curve.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_gpencil_geom.h b/source/blender/blenkernel/BKE_gpencil_geom.h
index 24b820b06cca29b33976c4407bf7a2e8b2ed309e..eb61bd32eeecafcbac9cf7e4f599cf4767224c2c 100644
--- a/source/blender/blenkernel/BKE_gpencil_geom.h
+++ b/source/blender/blenkernel/BKE_gpencil_geom.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_gpencil_modifier.h b/source/blender/blenkernel/BKE_gpencil_modifier.h
index 6df13df1c01fae648279d93de20621ddf8d72add..96c405e46ec6930ffb170b0cfc20821ac8959d30 100644
--- a/source/blender/blenkernel/BKE_gpencil_modifier.h
+++ b/source/blender/blenkernel/BKE_gpencil_modifier.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_gpencil_update_cache.h b/source/blender/blenkernel/BKE_gpencil_update_cache.h
index 3ac78267922d532cb8c784655f8c5fd8f5e9a068..a4fd70eb8830b3b3abfbea080630e77a381135aa 100644
--- a/source/blender/blenkernel/BKE_gpencil_update_cache.h
+++ b/source/blender/blenkernel/BKE_gpencil_update_cache.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_icons.h b/source/blender/blenkernel/BKE_icons.h
index a65cdcd23af66693b49cf16c385970bc1d6e70ff..db45e405e79d84662a3b411c8ec1ce34c962ad38 100644
--- a/source/blender/blenkernel/BKE_icons.h
+++ b/source/blender/blenkernel/BKE_icons.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006-2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006-2007 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_idprop.h b/source/blender/blenkernel/BKE_idprop.h
index b0b981e49f0270f1dfe2898bd11ab9dbdb2880ea..b4dda3689e63a0a5c3f479efcd8b22435fd7bc1c 100644
--- a/source/blender/blenkernel/BKE_idprop.h
+++ b/source/blender/blenkernel/BKE_idprop.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_idprop.hh b/source/blender/blenkernel/BKE_idprop.hh
index 782fa9c7404e025c24919eeedffcd236ca7c6d7d..1e741cc252f6570698bf80dd0991652440a4815a 100644
--- a/source/blender/blenkernel/BKE_idprop.hh
+++ b/source/blender/blenkernel/BKE_idprop.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_idtype.h b/source/blender/blenkernel/BKE_idtype.h
index e9e5b183e4a63791508326162f8d7a25e742a3d7..e9abbb4575e3315233a7c367a3e3a779f28e7105 100644
--- a/source/blender/blenkernel/BKE_idtype.h
+++ b/source/blender/blenkernel/BKE_idtype.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_image.h b/source/blender/blenkernel/BKE_image.h
index 598818ba3c057d15c9e7d0c5e4a43b7beb62453a..b3001ecc880c38e5dc38351028968207ab6f73d3 100644
--- a/source/blender/blenkernel/BKE_image.h
+++ b/source/blender/blenkernel/BKE_image.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_image_partial_update.hh b/source/blender/blenkernel/BKE_image_partial_update.hh
index 0fc05809bbd41df7bf94bc77961451dc8479079c..3804936d00fba460663010f17c715ca58d3b32b8 100644
--- a/source/blender/blenkernel/BKE_image_partial_update.hh
+++ b/source/blender/blenkernel/BKE_image_partial_update.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_image_save.h b/source/blender/blenkernel/BKE_image_save.h
index 0620442d998095cb8dc754606a8102ac5f726af9..ea9ed7d2d26bb90a8bccdd6f8347e62ce36088b1 100644
--- a/source/blender/blenkernel/BKE_image_save.h
+++ b/source/blender/blenkernel/BKE_image_save.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 #include "DNA_scene_types.h"
diff --git a/source/blender/blenkernel/BKE_ipo.h b/source/blender/blenkernel/BKE_ipo.h
index 5899db6c6ce79d4bca602b6e0e1ca022133b5e9b..a0103bc7a6205f30f45cf1705cac1f4e40d2e555 100644
--- a/source/blender/blenkernel/BKE_ipo.h
+++ b/source/blender/blenkernel/BKE_ipo.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_kelvinlet.h b/source/blender/blenkernel/BKE_kelvinlet.h
index f3833ea381ab4b8a3627f58b9ee12b017408477b..40630c64cba9e798487b8c81e4c4ef0de10d3bc7 100644
--- a/source/blender/blenkernel/BKE_kelvinlet.h
+++ b/source/blender/blenkernel/BKE_kelvinlet.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_key.h b/source/blender/blenkernel/BKE_key.h
index 07e816558dfc2da4f373cf60444c69082efbd313..da436b7d33fa35d6014ecf8bb3fc9a531302b078 100644
--- a/source/blender/blenkernel/BKE_key.h
+++ b/source/blender/blenkernel/BKE_key.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_keyconfig.h b/source/blender/blenkernel/BKE_keyconfig.h
index 132994ede3a80edbf1febcc4dd93f15618cd3653..e95afef0e60603aacf160feb51199f1751438023 100644
--- a/source/blender/blenkernel/BKE_keyconfig.h
+++ b/source/blender/blenkernel/BKE_keyconfig.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_lattice.h b/source/blender/blenkernel/BKE_lattice.h
index 35260aa38520d6055f40811736668c78627d2d36..9fa59c9e81b585c2308ef3d800adfbdb2b4da1b9 100644
--- a/source/blender/blenkernel/BKE_lattice.h
+++ b/source/blender/blenkernel/BKE_lattice.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_layer.h b/source/blender/blenkernel/BKE_layer.h
index accdfe1ca25d3161ca2591c44421e0579aafbc30..ba22ab3f1debc9a93b046ccc98754ce184e22bc5 100644
--- a/source/blender/blenkernel/BKE_layer.h
+++ b/source/blender/blenkernel/BKE_layer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_lib_id.h b/source/blender/blenkernel/BKE_lib_id.h
index daf13590ca2d59b127a09effc995059320ec84d7..c4aa44706d56b053af9b426e82e4c1eca77123ba 100644
--- a/source/blender/blenkernel/BKE_lib_id.h
+++ b/source/blender/blenkernel/BKE_lib_id.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_lib_override.h b/source/blender/blenkernel/BKE_lib_override.h
index c81616110cc4dafb24f64b7e2b2e46f58b9344cd..858bc2f5625680e4914d8af52239dc2ab0f1f511 100644
--- a/source/blender/blenkernel/BKE_lib_override.h
+++ b/source/blender/blenkernel/BKE_lib_override.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_lib_query.h b/source/blender/blenkernel/BKE_lib_query.h
index dd2e2a2f8e522d53a0c8628bb24036737e77d804..09d52dd9c62f2f6c2a76660cd09804144a7aa13d 100644
--- a/source/blender/blenkernel/BKE_lib_query.h
+++ b/source/blender/blenkernel/BKE_lib_query.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_lib_remap.h b/source/blender/blenkernel/BKE_lib_remap.h
index f14cd75c5c66ff938566db64f0e3312359703e54..0769374c9a84dd6e5956b9427b5170d8966fc75f 100644
--- a/source/blender/blenkernel/BKE_lib_remap.h
+++ b/source/blender/blenkernel/BKE_lib_remap.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_library.h b/source/blender/blenkernel/BKE_library.h
index 3981a4c14ea68978bea7f4bb7fa7fe7a2320846b..3aae4cf75124e5fe53de90390f287f9ab2af465b 100644
--- a/source/blender/blenkernel/BKE_library.h
+++ b/source/blender/blenkernel/BKE_library.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_light.h b/source/blender/blenkernel/BKE_light.h
index 919526b9378b1d113a93645a722b9b95a42bbfc7..e36b68aa3326eab3d2a8141dc018ea32a123c73d 100644
--- a/source/blender/blenkernel/BKE_light.h
+++ b/source/blender/blenkernel/BKE_light.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_lightprobe.h b/source/blender/blenkernel/BKE_lightprobe.h
index 59c5d32c03e4739e3882e7a7df39a107f928a506..97e6adf90889ff7510caf95f6a91bb3ea552e7d5 100644
--- a/source/blender/blenkernel/BKE_lightprobe.h
+++ b/source/blender/blenkernel/BKE_lightprobe.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_linestyle.h b/source/blender/blenkernel/BKE_linestyle.h
index 94a5fde546802bdd20fc4a94fe46e2e2b3facfe1..1ff4a76fcf882e054607f1fb55a2a0434ed6a907 100644
--- a/source/blender/blenkernel/BKE_linestyle.h
+++ b/source/blender/blenkernel/BKE_linestyle.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_main.h b/source/blender/blenkernel/BKE_main.h
index e4f94110eb1f4064f43322f43a9551ae78be59f2..2c64bb576b732f14d8afb321d25f20ed3c80e8f5 100644
--- a/source/blender/blenkernel/BKE_main.h
+++ b/source/blender/blenkernel/BKE_main.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_main_idmap.h b/source/blender/blenkernel/BKE_main_idmap.h
index 16b0c710357719eee603015b72ff7479ad3915f4..77bfcd58326bf7768d789c07d25cfca36fd08f4c 100644
--- a/source/blender/blenkernel/BKE_main_idmap.h
+++ b/source/blender/blenkernel/BKE_main_idmap.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_mask.h b/source/blender/blenkernel/BKE_mask.h
index e17f7eb4e859c6286e435131119309ee4cad19b3..d126d706c661c0b7343bd239b90e0dff06e8e883 100644
--- a/source/blender/blenkernel/BKE_mask.h
+++ b/source/blender/blenkernel/BKE_mask.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_material.h b/source/blender/blenkernel/BKE_material.h
index 11746f445e49694546d047b316b50c046b13455f..0870a099c762357a59f416ac6f9414aefc4a49b3 100644
--- a/source/blender/blenkernel/BKE_material.h
+++ b/source/blender/blenkernel/BKE_material.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_mball.h b/source/blender/blenkernel/BKE_mball.h
index fb72b361a0a9632e45f0f3c71ec307b01c5937fa..f40d0bb3004a9557054dae311fefa1d322742060 100644
--- a/source/blender/blenkernel/BKE_mball.h
+++ b/source/blender/blenkernel/BKE_mball.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_mball_tessellate.h b/source/blender/blenkernel/BKE_mball_tessellate.h
index 0ffbcf5bb0594b5442710474d33581125bfcfec7..2dc16dc64d6f24b7af32f424dd47daf053369e9a 100644
--- a/source/blender/blenkernel/BKE_mball_tessellate.h
+++ b/source/blender/blenkernel/BKE_mball_tessellate.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_mesh.h b/source/blender/blenkernel/BKE_mesh.h
index 376bb5c8d2e80608320cf09146e7edab529562de..a84f6058d67a156f11d0e7441b32bcb9f159dfc6 100644
--- a/source/blender/blenkernel/BKE_mesh.h
+++ b/source/blender/blenkernel/BKE_mesh.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_mesh_boolean_convert.hh b/source/blender/blenkernel/BKE_mesh_boolean_convert.hh
index 5a74399980366253659287d54e8f8a159910f1af..54209f1ccfc59a126fa480d844d08abdca943fd5 100644
--- a/source/blender/blenkernel/BKE_mesh_boolean_convert.hh
+++ b/source/blender/blenkernel/BKE_mesh_boolean_convert.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_mesh_fair.h b/source/blender/blenkernel/BKE_mesh_fair.h
index 2884de6d5c1b924161648f45bd2e1bf1461b56fb..0dc44ecb247e092dffc4c2040293ccf72d6a6dce 100644
--- a/source/blender/blenkernel/BKE_mesh_fair.h
+++ b/source/blender/blenkernel/BKE_mesh_fair.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_mesh_iterators.h b/source/blender/blenkernel/BKE_mesh_iterators.h
index b28465fc41e0e9fd507fb37e858aac8c0e9b0016..b3103991537cd317c882c88ac5094d34624177dd 100644
--- a/source/blender/blenkernel/BKE_mesh_iterators.h
+++ b/source/blender/blenkernel/BKE_mesh_iterators.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_mesh_mapping.h b/source/blender/blenkernel/BKE_mesh_mapping.h
index 48669278e234265c516d38465b9634ece5f840bf..163acf062e0553f101faf7aa280ea833e4f21f3d 100644
--- a/source/blender/blenkernel/BKE_mesh_mapping.h
+++ b/source/blender/blenkernel/BKE_mesh_mapping.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_mesh_mirror.h b/source/blender/blenkernel/BKE_mesh_mirror.h
index c77974d6cc105b64f23b042d5105ec21d479b0f6..582f107e4d99009d6871d263e0af731abda078aa 100644
--- a/source/blender/blenkernel/BKE_mesh_mirror.h
+++ b/source/blender/blenkernel/BKE_mesh_mirror.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_mesh_remap.h b/source/blender/blenkernel/BKE_mesh_remap.h
index ab07cb0df4e2d9e9b815a14be728e2e53ad8b84b..395fc5c7eba863ed66e4455a728008bc5f3b4bfc 100644
--- a/source/blender/blenkernel/BKE_mesh_remap.h
+++ b/source/blender/blenkernel/BKE_mesh_remap.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_mesh_remesh_voxel.h b/source/blender/blenkernel/BKE_mesh_remesh_voxel.h
index 80ced9b5f5726adb35cc61cbcc48ea500060d24f..dff17bd65758a73fb0bd2c942273aedf92d4a0c8 100644
--- a/source/blender/blenkernel/BKE_mesh_remesh_voxel.h
+++ b/source/blender/blenkernel/BKE_mesh_remesh_voxel.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_mesh_runtime.h b/source/blender/blenkernel/BKE_mesh_runtime.h
index ad86f6d8f2596b314e1440ac8ec6218056083413..a007e04f066108b37e109921d22ef27626690ae7 100644
--- a/source/blender/blenkernel/BKE_mesh_runtime.h
+++ b/source/blender/blenkernel/BKE_mesh_runtime.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_mesh_sample.hh b/source/blender/blenkernel/BKE_mesh_sample.hh
index 738b768d9067ed5948edd991a28a5c73719f8ab8..9fe5bd3c5317d6410b9fc553e24fda62c22bf62d 100644
--- a/source/blender/blenkernel/BKE_mesh_sample.hh
+++ b/source/blender/blenkernel/BKE_mesh_sample.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_mesh_tangent.h b/source/blender/blenkernel/BKE_mesh_tangent.h
index 320c4e7f36a8ec96e49add39b4f36b1e4d0d2a2b..5d9f850dd247fe693b6415b28a193150fcd73bb6 100644
--- a/source/blender/blenkernel/BKE_mesh_tangent.h
+++ b/source/blender/blenkernel/BKE_mesh_tangent.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_mesh_types.h b/source/blender/blenkernel/BKE_mesh_types.h
index aed8c44a0319e69ef0272839bef3cd22b721a8c4..0b879c1dfe97b30baea1ee024b278b398dccd627 100644
--- a/source/blender/blenkernel/BKE_mesh_types.h
+++ b/source/blender/blenkernel/BKE_mesh_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_mesh_wrapper.h b/source/blender/blenkernel/BKE_mesh_wrapper.h
index 12e8fd715039871c39fad0da76f9edf08af26d5d..f664c703defd09e5584df005432d40b38b3a061f 100644
--- a/source/blender/blenkernel/BKE_mesh_wrapper.h
+++ b/source/blender/blenkernel/BKE_mesh_wrapper.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_modifier.h b/source/blender/blenkernel/BKE_modifier.h
index a05ed67063ae1aa894ba38616ae93a1a64345096..9a212cb127589f59970d464d8dd7d12a450dcd6e 100644
--- a/source/blender/blenkernel/BKE_modifier.h
+++ b/source/blender/blenkernel/BKE_modifier.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_movieclip.h b/source/blender/blenkernel/BKE_movieclip.h
index 9148d5b760f0c41c56d44238a4e9c3a51b3c9554..cddc10b58263a9bc0524a431c3edb2692e26a882 100644
--- a/source/blender/blenkernel/BKE_movieclip.h
+++ b/source/blender/blenkernel/BKE_movieclip.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_multires.h b/source/blender/blenkernel/BKE_multires.h
index 504771fa7336f78ab1aea5070b563b8d321f27c2..0efe38c1e8f4062de1dbde95a6a437071626bd54 100644
--- a/source/blender/blenkernel/BKE_multires.h
+++ b/source/blender/blenkernel/BKE_multires.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 by Nicholas Bishop. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_nla.h b/source/blender/blenkernel/BKE_nla.h
index 61431547bfba5fc77c1020a66e65168813de7e54..215adc3e67b498b80c505f8fb63b812aa806c1d6 100644
--- a/source/blender/blenkernel/BKE_nla.h
+++ b/source/blender/blenkernel/BKE_nla.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_node.h b/source/blender/blenkernel/BKE_node.h
index 359a5662a13764c109cc4cbf935a2752912ce4aa..933585b1f8f29be374911cbc6a14fb44fba80e78 100644
--- a/source/blender/blenkernel/BKE_node.h
+++ b/source/blender/blenkernel/BKE_node.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_node_tree_update.h b/source/blender/blenkernel/BKE_node_tree_update.h
index bfb8c337cdcf5a1e5cd66a72577a502bf6d5a0cc..7998a5ec017133c6c9e39551e0ae5720603b4e06 100644
--- a/source/blender/blenkernel/BKE_node_tree_update.h
+++ b/source/blender/blenkernel/BKE_node_tree_update.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_object.h b/source/blender/blenkernel/BKE_object.h
index e8ff0903b045609c795e7a358c5b62fe800f4915..17d90e64459f7e140d95aab5198dd6ce2308aa0f 100644
--- a/source/blender/blenkernel/BKE_object.h
+++ b/source/blender/blenkernel/BKE_object.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_object_deform.h b/source/blender/blenkernel/BKE_object_deform.h
index fe7a9ddc6333f1bc950af326b46fc2438979297a..e9d6ba7ee84e5411008ec04259d9ee73981220f7 100644
--- a/source/blender/blenkernel/BKE_object_deform.h
+++ b/source/blender/blenkernel/BKE_object_deform.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_object_facemap.h b/source/blender/blenkernel/BKE_object_facemap.h
index 10cb4a54bdeb1d819027d7c283789d9be1a3ec76..d8925d9d002aef8de063c453eb4363b50dbe0201 100644
--- a/source/blender/blenkernel/BKE_object_facemap.h
+++ b/source/blender/blenkernel/BKE_object_facemap.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_ocean.h b/source/blender/blenkernel/BKE_ocean.h
index f598fb097737ba3dbc15d814ababf9ae95789045..aab4c68bcd2834f348728f263ae5ace3d5233c51 100644
--- a/source/blender/blenkernel/BKE_ocean.h
+++ b/source/blender/blenkernel/BKE_ocean.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_outliner_treehash.h b/source/blender/blenkernel/BKE_outliner_treehash.h
index 94bf0f622d66f60216680f6fa128ff17cd9c30e5..6f4d126fcbf3c6fe9624e8e0fd05f40a8cb5a0a1 100644
--- a/source/blender/blenkernel/BKE_outliner_treehash.h
+++ b/source/blender/blenkernel/BKE_outliner_treehash.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_packedFile.h b/source/blender/blenkernel/BKE_packedFile.h
index 87a46f5f8884dcec690a9b71ba960660ef3fa398..8433894b8c5c4562d957e5fbc84ce15528d46fa9 100644
--- a/source/blender/blenkernel/BKE_packedFile.h
+++ b/source/blender/blenkernel/BKE_packedFile.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_paint.h b/source/blender/blenkernel/BKE_paint.h
index 8291be9d7e892044d8c5ecb6f3ecd1d0fc349087..f38152af327aa2203ea9e5e13030d67db84644df 100644
--- a/source/blender/blenkernel/BKE_paint.h
+++ b/source/blender/blenkernel/BKE_paint.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 by Nicholas Bishop. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_particle.h b/source/blender/blenkernel/BKE_particle.h
index b5e60da540e9e7043a6be228a8d29005461e75ab..d1fabdf4265a378dfc92f87bf4cf605c91b4d5d6 100644
--- a/source/blender/blenkernel/BKE_particle.h
+++ b/source/blender/blenkernel/BKE_particle.h
@@ -1,21 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2007 Janne Karhu. All rights reserved.
- *           2011-2012 AutoCRC (adaptive time step, Classical SPH).
- */
+ *           2011-2012 AutoCRC (adaptive time step, Classical SPH). */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_pbvh.h b/source/blender/blenkernel/BKE_pbvh.h
index 42dfd7f14ff53c1efa6e407e5c0fe18ee3fc416b..eadbe52d09177d416d6d86b197d39dc693f653f7 100644
--- a/source/blender/blenkernel/BKE_pbvh.h
+++ b/source/blender/blenkernel/BKE_pbvh.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_pointcache.h b/source/blender/blenkernel/BKE_pointcache.h
index 0749b9d6d492318f470f464c83430e04591c5273..4840212336534ae64aa888eb4ffac20e509bf8f5 100644
--- a/source/blender/blenkernel/BKE_pointcache.h
+++ b/source/blender/blenkernel/BKE_pointcache.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_pointcloud.h b/source/blender/blenkernel/BKE_pointcloud.h
index d330ea41e6a073d6014e39b4fa0c444b62725d3d..c238a24f17370fe037289f1784b2dec57a973af0 100644
--- a/source/blender/blenkernel/BKE_pointcloud.h
+++ b/source/blender/blenkernel/BKE_pointcloud.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_preferences.h b/source/blender/blenkernel/BKE_preferences.h
index 6d6c58e5c1e09a36adad1075c61d3e0082dff2de..9d33848b3d1811a10c22d615864580c60c65f9b3 100644
--- a/source/blender/blenkernel/BKE_preferences.h
+++ b/source/blender/blenkernel/BKE_preferences.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_report.h b/source/blender/blenkernel/BKE_report.h
index 8b585fd01677abf7a0e82a4715aa53d3639b9e84..b67c4856e896c053e49efa7b3c44140da98eb91e 100644
--- a/source/blender/blenkernel/BKE_report.h
+++ b/source/blender/blenkernel/BKE_report.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_rigidbody.h b/source/blender/blenkernel/BKE_rigidbody.h
index 68f2319106e6d9fb92e8b2ec95c4efd2c6ddcb3d..83c0f5639c465713d1a76a046a99b83167ba894d 100644
--- a/source/blender/blenkernel/BKE_rigidbody.h
+++ b/source/blender/blenkernel/BKE_rigidbody.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_scene.h b/source/blender/blenkernel/BKE_scene.h
index a40359e86506da2fd71534ba6ff09088d60247ae..d06b1d43b965ae322932a112d793b10853da296d 100644
--- a/source/blender/blenkernel/BKE_scene.h
+++ b/source/blender/blenkernel/BKE_scene.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_screen.h b/source/blender/blenkernel/BKE_screen.h
index c85ae04a492d0cb649d6a61b17323fb350945ecc..4dda21d99b886ca811df72be9bda58ff7347d319 100644
--- a/source/blender/blenkernel/BKE_screen.h
+++ b/source/blender/blenkernel/BKE_screen.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_sequencer_offscreen.h b/source/blender/blenkernel/BKE_sequencer_offscreen.h
index 25a78fcfbad5adbca74058ea05b41c1dcb96676b..118c61df71bf5b355594711bdebc8896a1bad4f1 100644
--- a/source/blender/blenkernel/BKE_sequencer_offscreen.h
+++ b/source/blender/blenkernel/BKE_sequencer_offscreen.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_shader_fx.h b/source/blender/blenkernel/BKE_shader_fx.h
index 432b334a6762a52b8adcbabbf34a26e329179dff..3d5fdda8a54f50db6cf1fcd4e24611fbd5ce62d6 100644
--- a/source/blender/blenkernel/BKE_shader_fx.h
+++ b/source/blender/blenkernel/BKE_shader_fx.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_shrinkwrap.h b/source/blender/blenkernel/BKE_shrinkwrap.h
index ea8168123445f62b930fb2d072acded34193f237..2144419728ea35b7d2b2f81826dd96c0929f9717 100644
--- a/source/blender/blenkernel/BKE_shrinkwrap.h
+++ b/source/blender/blenkernel/BKE_shrinkwrap.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_simulation.h b/source/blender/blenkernel/BKE_simulation.h
index 373720361302b96f40648aaa26c30b49f7d347e0..3d6ac8ffc2e934510234a90b690feb516dcf331e 100644
--- a/source/blender/blenkernel/BKE_simulation.h
+++ b/source/blender/blenkernel/BKE_simulation.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_softbody.h b/source/blender/blenkernel/BKE_softbody.h
index 5d010fa215535a676e90e85c295e4ae3d8388862..09b18d3a731d4ccbdcb9c04d92528d4f19407d78 100644
--- a/source/blender/blenkernel/BKE_softbody.h
+++ b/source/blender/blenkernel/BKE_softbody.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_sound.h b/source/blender/blenkernel/BKE_sound.h
index 8796e2c18f301df331a81fbe428fe8a775702816..8931418e49c91d789a7a9f8fe8a98a9534130c1d 100644
--- a/source/blender/blenkernel/BKE_sound.h
+++ b/source/blender/blenkernel/BKE_sound.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_speaker.h b/source/blender/blenkernel/BKE_speaker.h
index 9defa887d3caa0b31c8a13da31bd2e8f77240e65..13a2ddb8c8aca64a93870fc9b4062c9caac33958 100644
--- a/source/blender/blenkernel/BKE_speaker.h
+++ b/source/blender/blenkernel/BKE_speaker.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_spline.hh b/source/blender/blenkernel/BKE_spline.hh
index a87f76da8da56b0a495d81470ee90c6b7cd79706..846dcd3ca8e96d16631b0015394c686155877932 100644
--- a/source/blender/blenkernel/BKE_spline.hh
+++ b/source/blender/blenkernel/BKE_spline.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_studiolight.h b/source/blender/blenkernel/BKE_studiolight.h
index 792186dd2604757d79f8f7524d6c7fa014136d26..68faa7613a97ac833af821f9206d051a3e3e01f7 100644
--- a/source/blender/blenkernel/BKE_studiolight.h
+++ b/source/blender/blenkernel/BKE_studiolight.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006-2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006-2007 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_subdiv.h b/source/blender/blenkernel/BKE_subdiv.h
index 697b3e9ace702a375c129bb86950d11bde2da94a..436853fe47b71f7837a9bd0eb67be881b842c806 100644
--- a/source/blender/blenkernel/BKE_subdiv.h
+++ b/source/blender/blenkernel/BKE_subdiv.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_subdiv_ccg.h b/source/blender/blenkernel/BKE_subdiv_ccg.h
index b3aa966e0d043da5a776de0fd2620f05134068cf..31a1912bc68f73b4f496ddd4c5d9039c5b36e5f6 100644
--- a/source/blender/blenkernel/BKE_subdiv_ccg.h
+++ b/source/blender/blenkernel/BKE_subdiv_ccg.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_subdiv_deform.h b/source/blender/blenkernel/BKE_subdiv_deform.h
index 1cdb8d2c794e33dcdef68b165ffbbec2ea9f92c3..7bee1656bcf0cef5a37780d1fd8f16b928a4a5ad 100644
--- a/source/blender/blenkernel/BKE_subdiv_deform.h
+++ b/source/blender/blenkernel/BKE_subdiv_deform.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_subdiv_eval.h b/source/blender/blenkernel/BKE_subdiv_eval.h
index 23bcdcce27634ec94e1d641d4c9a7d78ce12bab2..a33140b721d318c1e74852e62afd281d4bc48edd 100644
--- a/source/blender/blenkernel/BKE_subdiv_eval.h
+++ b/source/blender/blenkernel/BKE_subdiv_eval.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_subdiv_foreach.h b/source/blender/blenkernel/BKE_subdiv_foreach.h
index 001a4f9401bd664ac679b0f59392e229961be34a..9afa5040772f34ca69468cf0536468ee2a92950f 100644
--- a/source/blender/blenkernel/BKE_subdiv_foreach.h
+++ b/source/blender/blenkernel/BKE_subdiv_foreach.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_subdiv_mesh.h b/source/blender/blenkernel/BKE_subdiv_mesh.h
index 73a3e8ed02ebe4fef630fd34b09c957c0118bdf0..ede7ae60dc9163d91f2b208add883563eaf2ef96 100644
--- a/source/blender/blenkernel/BKE_subdiv_mesh.h
+++ b/source/blender/blenkernel/BKE_subdiv_mesh.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_subdiv_modifier.h b/source/blender/blenkernel/BKE_subdiv_modifier.h
index 8a179206dd7465fea8c87637b3512c434c497511..a9ab5b91e1af289177d14e09715c780744d5204e 100644
--- a/source/blender/blenkernel/BKE_subdiv_modifier.h
+++ b/source/blender/blenkernel/BKE_subdiv_modifier.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_subdiv_topology.h b/source/blender/blenkernel/BKE_subdiv_topology.h
index 42bd9392aa4d6be0fd8049e9c4d3380926843f89..0e9f50cf71b6020ac4756ea05857fc354959618d 100644
--- a/source/blender/blenkernel/BKE_subdiv_topology.h
+++ b/source/blender/blenkernel/BKE_subdiv_topology.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_subsurf.h b/source/blender/blenkernel/BKE_subsurf.h
index db57076082cacfe20ee35948a2be5353acd520f8..5dd2935ad0d3a7eea8c14c914df33accb76d442c 100644
--- a/source/blender/blenkernel/BKE_subsurf.h
+++ b/source/blender/blenkernel/BKE_subsurf.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_text.h b/source/blender/blenkernel/BKE_text.h
index 7415cb90ff2e7c4bfb75100de08a315bad7a49c6..e833b4a14bb84690019e3e84275d25a48f6e3aa6 100644
--- a/source/blender/blenkernel/BKE_text.h
+++ b/source/blender/blenkernel/BKE_text.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_text_suggestions.h b/source/blender/blenkernel/BKE_text_suggestions.h
index 482141c1032356b0cba472edc34e793a0db0ebb3..b5fc8d11628d91fd1df5f47a21f93cce4338b6f3 100644
--- a/source/blender/blenkernel/BKE_text_suggestions.h
+++ b/source/blender/blenkernel/BKE_text_suggestions.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_texture.h b/source/blender/blenkernel/BKE_texture.h
index 2683ab00fa4773531f5bc7569a435c979c1c0981..c50afee44f86fcd07f51051bb302e9dc163650c9 100644
--- a/source/blender/blenkernel/BKE_texture.h
+++ b/source/blender/blenkernel/BKE_texture.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_tracking.h b/source/blender/blenkernel/BKE_tracking.h
index 7769215d6168c8a7f21c7f2b8952563d6e7381c2..8cac196accc75b3d00bf475e35b6f5fb1d52f4e8 100644
--- a/source/blender/blenkernel/BKE_tracking.h
+++ b/source/blender/blenkernel/BKE_tracking.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_type_conversions.hh b/source/blender/blenkernel/BKE_type_conversions.hh
index ebfb13cd08f052c643c09e4d86493c1c91d48efa..e66982aa04c3a78d058678d8e10ac4b65a7b1654 100644
--- a/source/blender/blenkernel/BKE_type_conversions.hh
+++ b/source/blender/blenkernel/BKE_type_conversions.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_undo_system.h b/source/blender/blenkernel/BKE_undo_system.h
index 88a9ac9d0bf1aaaae3271028c73f750bae425cf6..f3a929dc5b9cb76a826102f65e8e1ca46f03394f 100644
--- a/source/blender/blenkernel/BKE_undo_system.h
+++ b/source/blender/blenkernel/BKE_undo_system.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_unit.h b/source/blender/blenkernel/BKE_unit.h
index 505cfee3adf01e6c0944275cc7935a3b740a24f9..d6de95a19b7111e4761c878dcd1f5d9de44cb57c 100644
--- a/source/blender/blenkernel/BKE_unit.h
+++ b/source/blender/blenkernel/BKE_unit.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_vfont.h b/source/blender/blenkernel/BKE_vfont.h
index 3397f2ef82ac33d6b7224eba238c10e9f76fbff2..858a32097a9c4ec4ef3806bea4cc53269b7f6700 100644
--- a/source/blender/blenkernel/BKE_vfont.h
+++ b/source/blender/blenkernel/BKE_vfont.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_vfontdata.h b/source/blender/blenkernel/BKE_vfontdata.h
index 01ca59828fca0a0d2f5d77169b829c2ed3fecd1d..fc4f65cdf5582bc5c79c2e00938695dfc1ddba90 100644
--- a/source/blender/blenkernel/BKE_vfontdata.h
+++ b/source/blender/blenkernel/BKE_vfontdata.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_volume.h b/source/blender/blenkernel/BKE_volume.h
index 8b42de7303db966f591960ac6550e0556177f3f9..c73417d77404842fddffa076bbd5eeba9c85d687 100644
--- a/source/blender/blenkernel/BKE_volume.h
+++ b/source/blender/blenkernel/BKE_volume.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_volume_render.h b/source/blender/blenkernel/BKE_volume_render.h
index c959605721e44581dd1d973919011d26dcc82db3..0f01b1b9b324d4888f42a66856b006eb265d6193 100644
--- a/source/blender/blenkernel/BKE_volume_render.h
+++ b/source/blender/blenkernel/BKE_volume_render.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_volume_to_mesh.hh b/source/blender/blenkernel/BKE_volume_to_mesh.hh
index 123cb33f24fec5aec4ede00c52f7c048dc3841f2..9a3ab1000ea838a706fca9656cd1ed49b888fe22 100644
--- a/source/blender/blenkernel/BKE_volume_to_mesh.hh
+++ b/source/blender/blenkernel/BKE_volume_to_mesh.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_workspace.h b/source/blender/blenkernel/BKE_workspace.h
index 0f609be67dec81b65308ae8659a88a70e709e9aa..4456c87bd70b80b16074dbbf30b97f5f6120ab5f 100644
--- a/source/blender/blenkernel/BKE_workspace.h
+++ b/source/blender/blenkernel/BKE_workspace.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/BKE_world.h b/source/blender/blenkernel/BKE_world.h
index bbab6fa2712bbabfaba4eac5d009f5731345f30c..09f9f0c557d6b898ed37348d29bf6631b09ecbad 100644
--- a/source/blender/blenkernel/BKE_world.h
+++ b/source/blender/blenkernel/BKE_world.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenkernel/BKE_writeavi.h b/source/blender/blenkernel/BKE_writeavi.h
index c20de4df9012ed92256eb56e85ca8debd6a2c9d4..e1bbffb11e18ef383df59ef925cc5f60764b0bbf 100644
--- a/source/blender/blenkernel/BKE_writeavi.h
+++ b/source/blender/blenkernel/BKE_writeavi.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/BKE_writeffmpeg.h b/source/blender/blenkernel/BKE_writeffmpeg.h
index 4c966c55e41256670305379944711b2fdc23c1e9..cf4a8137638b9f345e52a84cba5afc529a43b2ed 100644
--- a/source/blender/blenkernel/BKE_writeffmpeg.h
+++ b/source/blender/blenkernel/BKE_writeffmpeg.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/CMakeLists.txt b/source/blender/blenkernel/CMakeLists.txt
index 1483466061fed4006b7f5f210a8d677a8755068e..2de18382b7f92527b8118bc756ac128d1e11ff8c 100644
--- a/source/blender/blenkernel/CMakeLists.txt
+++ b/source/blender/blenkernel/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/blenkernel/intern/CCGSubSurf.c b/source/blender/blenkernel/intern/CCGSubSurf.c
index 74f848ac5806c3d150639e961a90cd858003a64b..219e2c52684ba9ea673b39d5e4078c36d4b6c3e2 100644
--- a/source/blender/blenkernel/intern/CCGSubSurf.c
+++ b/source/blender/blenkernel/intern/CCGSubSurf.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/CCGSubSurf.h b/source/blender/blenkernel/intern/CCGSubSurf.h
index 9349c33d72a1b5a504c4f837a2fa6a486ae51360..863a0a2eb91e528147a7accfb07c3047ea55577b 100644
--- a/source/blender/blenkernel/intern/CCGSubSurf.h
+++ b/source/blender/blenkernel/intern/CCGSubSurf.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/intern/CCGSubSurf_inline.h b/source/blender/blenkernel/intern/CCGSubSurf_inline.h
index 4681602c071be3b44826ded66f7a5b6b525f734c..22248ac379abd2482253e52dbfd6e5ccd8464e20 100644
--- a/source/blender/blenkernel/intern/CCGSubSurf_inline.h
+++ b/source/blender/blenkernel/intern/CCGSubSurf_inline.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/CCGSubSurf_intern.h b/source/blender/blenkernel/intern/CCGSubSurf_intern.h
index 82ca22e193afeaaad6550c3293ca0360ce27a1cd..f9e0fbb46dbc5c08ed9daf3882709cca85d00142 100644
--- a/source/blender/blenkernel/intern/CCGSubSurf_intern.h
+++ b/source/blender/blenkernel/intern/CCGSubSurf_intern.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/CCGSubSurf_legacy.c b/source/blender/blenkernel/intern/CCGSubSurf_legacy.c
index e19e01ec03441d75b5d5ae96436a859bb3501bc6..ff58819a442932c330fbad251ccec45164443cff 100644
--- a/source/blender/blenkernel/intern/CCGSubSurf_legacy.c
+++ b/source/blender/blenkernel/intern/CCGSubSurf_legacy.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/CCGSubSurf_util.c b/source/blender/blenkernel/intern/CCGSubSurf_util.c
index 3941b42d4b38264f1a9c485bf39d81cb007bc3e6..bde306c19791b92074835e22107b426213290969 100644
--- a/source/blender/blenkernel/intern/CCGSubSurf_util.c
+++ b/source/blender/blenkernel/intern/CCGSubSurf_util.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/DerivedMesh.cc b/source/blender/blenkernel/intern/DerivedMesh.cc
index 2e779d6fad7820b79c2c5b8548eba3ba968d458b..a0c1c53e7eaf35c71139777753bdd5b0a75dab99 100644
--- a/source/blender/blenkernel/intern/DerivedMesh.cc
+++ b/source/blender/blenkernel/intern/DerivedMesh.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/action.c b/source/blender/blenkernel/intern/action.c
index 8426f6f4676ec21862677293d8d2f7589836627a..6a999cde6eb4e0a80b234bd16aa5d3a367e99229 100644
--- a/source/blender/blenkernel/intern/action.c
+++ b/source/blender/blenkernel/intern/action.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/action_bones.cc b/source/blender/blenkernel/intern/action_bones.cc
index 1f2b7360b7049b7c867ae02fba8d49599b5c5be2..ce63d1ca10eb90d88034c715f1fd4aa9ca76f348 100644
--- a/source/blender/blenkernel/intern/action_bones.cc
+++ b/source/blender/blenkernel/intern/action_bones.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/action_mirror.c b/source/blender/blenkernel/intern/action_mirror.c
index cc3a15aa5466864640ac5f20edd6d2e064dd06d3..bb988605923a5c5d1c9ac6ddf82a52441a06e5af 100644
--- a/source/blender/blenkernel/intern/action_mirror.c
+++ b/source/blender/blenkernel/intern/action_mirror.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/action_test.cc b/source/blender/blenkernel/intern/action_test.cc
index 8423bc923f3effb6f40229c9686807895bb03c97..2ce2d37e31e4d2ea515daa8167f1b7ffb45a214f 100644
--- a/source/blender/blenkernel/intern/action_test.cc
+++ b/source/blender/blenkernel/intern/action_test.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 #include "BKE_action.h"
 
diff --git a/source/blender/blenkernel/intern/addon.c b/source/blender/blenkernel/intern/addon.c
index 177c29cd93534dae8daadd9ca38c36dbd37a03bd..65a958a1c51fd1364087f639491e8304dbbaade0 100644
--- a/source/blender/blenkernel/intern/addon.c
+++ b/source/blender/blenkernel/intern/addon.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/anim_data.c b/source/blender/blenkernel/intern/anim_data.c
index 1c0b465d202619e83def9d3b8c91b913acf42dda..6d9d48816b60832e5db5dcc72ecaddd7cb9e81fd 100644
--- a/source/blender/blenkernel/intern/anim_data.c
+++ b/source/blender/blenkernel/intern/anim_data.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/anim_path.c b/source/blender/blenkernel/intern/anim_path.c
index 43af55e9b6b46fc8799c7ae585ac92c365a7c943..57f64d7a0f84a3336a19cf181b9e752898f76b36 100644
--- a/source/blender/blenkernel/intern/anim_path.c
+++ b/source/blender/blenkernel/intern/anim_path.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/anim_sys.c b/source/blender/blenkernel/intern/anim_sys.c
index c45856adbdab285a3c626f4c31f4438d77a50bfc..6544ebd05dfef10ede04ed6de23569bdb367f13b 100644
--- a/source/blender/blenkernel/intern/anim_sys.c
+++ b/source/blender/blenkernel/intern/anim_sys.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/anim_visualization.c b/source/blender/blenkernel/intern/anim_visualization.c
index fdea52bcd64fd2ddf5e09d0831f88170dd43f63f..53a3a7e3712a2ac63caf9042619ac49e86fca2fe 100644
--- a/source/blender/blenkernel/intern/anim_visualization.c
+++ b/source/blender/blenkernel/intern/anim_visualization.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/anonymous_attribute.cc b/source/blender/blenkernel/intern/anonymous_attribute.cc
index 22c2f83e8be11e69e7fcfa09e10a5261b49a200d..6ce6bee547c07cb40081a793b5b82e0253a24e18 100644
--- a/source/blender/blenkernel/intern/anonymous_attribute.cc
+++ b/source/blender/blenkernel/intern/anonymous_attribute.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_anonymous_attribute.hh"
 
diff --git a/source/blender/blenkernel/intern/appdir.c b/source/blender/blenkernel/intern/appdir.c
index 9dd4c7e503a54ff6d37276e34007fed3f88e2d00..b0393ed723d76291e297c5c9808daaa06aae3f82 100644
--- a/source/blender/blenkernel/intern/appdir.c
+++ b/source/blender/blenkernel/intern/appdir.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/armature.c b/source/blender/blenkernel/intern/armature.c
index 1a9f0a9130d2f5a1d9dac598db5eedd7508732ee..5c2d77f20a8b90ee4ac321be5262603f42541ceb 100644
--- a/source/blender/blenkernel/intern/armature.c
+++ b/source/blender/blenkernel/intern/armature.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/armature_deform.c b/source/blender/blenkernel/intern/armature_deform.c
index a8e74f6b4c318e68dcc8a7004fec07fc1091fdc3..0769049e9a9893301a5b2ba07890abca918d2678 100644
--- a/source/blender/blenkernel/intern/armature_deform.c
+++ b/source/blender/blenkernel/intern/armature_deform.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/armature_pose.cc b/source/blender/blenkernel/intern/armature_pose.cc
index de26b997e762596e5c7a1895ecd9cc35a74f7e5c..06be986a6b99f7104235b74dd832b48b9c1cedf4 100644
--- a/source/blender/blenkernel/intern/armature_pose.cc
+++ b/source/blender/blenkernel/intern/armature_pose.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/armature_selection.cc b/source/blender/blenkernel/intern/armature_selection.cc
index c7dbc9d05b1660cd93279edb94bd28e1ce14a54f..24c326505a0aa5779bfba7d4ff898198f082f1d9 100644
--- a/source/blender/blenkernel/intern/armature_selection.cc
+++ b/source/blender/blenkernel/intern/armature_selection.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/armature_test.cc b/source/blender/blenkernel/intern/armature_test.cc
index a6d9a1f41e93954012f1715264b9e104e5d35495..7475e6f36d4f78ab5e9d568824c25baea38bfc57 100644
--- a/source/blender/blenkernel/intern/armature_test.cc
+++ b/source/blender/blenkernel/intern/armature_test.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "BKE_armature.hh"
 
diff --git a/source/blender/blenkernel/intern/armature_update.c b/source/blender/blenkernel/intern/armature_update.c
index f19065f039b73ea72cc1a16ea8cfe3f5163eaaa9..099588a0e14f8e262a255b6202d6c3532810c9a3 100644
--- a/source/blender/blenkernel/intern/armature_update.c
+++ b/source/blender/blenkernel/intern/armature_update.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/asset.cc b/source/blender/blenkernel/intern/asset.cc
index e5509b09e20545ce4e5a5e7d7e7c7c44ec3dec79..9d9ed219cbb5b0fbb5c758380d02544ca9caa177 100644
--- a/source/blender/blenkernel/intern/asset.cc
+++ b/source/blender/blenkernel/intern/asset.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/asset_catalog.cc b/source/blender/blenkernel/intern/asset_catalog.cc
index 06dd623ff283115338a1b605b3b4d217ba8dbd88..fccff602d2e761688117a2a78b1112a5113594e7 100644
--- a/source/blender/blenkernel/intern/asset_catalog.cc
+++ b/source/blender/blenkernel/intern/asset_catalog.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/asset_catalog_path.cc b/source/blender/blenkernel/intern/asset_catalog_path.cc
index d789150dba5311e5d07a1898784242ff0b2f6baa..669adb7adf4fbd404d689677df8267c77a94d42e 100644
--- a/source/blender/blenkernel/intern/asset_catalog_path.cc
+++ b/source/blender/blenkernel/intern/asset_catalog_path.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/asset_catalog_path_test.cc b/source/blender/blenkernel/intern/asset_catalog_path_test.cc
index f248863ce77f0a6aad145ee40c8e9f06340a97d7..731d128e3da47cfa91bf3b508af3884ab73eabcd 100644
--- a/source/blender/blenkernel/intern/asset_catalog_path_test.cc
+++ b/source/blender/blenkernel/intern/asset_catalog_path_test.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "BKE_asset_catalog_path.hh"
 
diff --git a/source/blender/blenkernel/intern/asset_catalog_test.cc b/source/blender/blenkernel/intern/asset_catalog_test.cc
index 8c39bfc97701610ec652823362a80cddfdad765b..11f36e32b74f78f55aa93f2f0af5b887aa55a0cb 100644
--- a/source/blender/blenkernel/intern/asset_catalog_test.cc
+++ b/source/blender/blenkernel/intern/asset_catalog_test.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "BKE_appdir.h"
 #include "BKE_asset_catalog.hh"
diff --git a/source/blender/blenkernel/intern/asset_library.cc b/source/blender/blenkernel/intern/asset_library.cc
index 74de9b93c252892c926f2e6c8ba31c484ba8ddfb..968873cbcbe18b090d375fea759fc3c76cb58c0c 100644
--- a/source/blender/blenkernel/intern/asset_library.cc
+++ b/source/blender/blenkernel/intern/asset_library.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/asset_library_service.cc b/source/blender/blenkernel/intern/asset_library_service.cc
index 6b3f1fa34082e9fb04a671c5ec58aab204552655..a6b2b7548a2ff11f16d945e2c21bf8e24390b5b7 100644
--- a/source/blender/blenkernel/intern/asset_library_service.cc
+++ b/source/blender/blenkernel/intern/asset_library_service.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/asset_library_service.hh b/source/blender/blenkernel/intern/asset_library_service.hh
index 03df706bc42d8ccbee276fea7eb181387c8a4838..277fb9db6cca1206ed874c9c97899dcdc5eea7c7 100644
--- a/source/blender/blenkernel/intern/asset_library_service.hh
+++ b/source/blender/blenkernel/intern/asset_library_service.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/asset_library_service_test.cc b/source/blender/blenkernel/intern/asset_library_service_test.cc
index 9fa6d100a53fab65f1d95c4525a6f9040a68d065..de6180cb684be072e787f461eab0d4e58f37158b 100644
--- a/source/blender/blenkernel/intern/asset_library_service_test.cc
+++ b/source/blender/blenkernel/intern/asset_library_service_test.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "asset_library_service.hh"
 
diff --git a/source/blender/blenkernel/intern/asset_library_test.cc b/source/blender/blenkernel/intern/asset_library_test.cc
index 702008fed964d874890f7524675d2caeec62cbd7..4588909956724d20e9f09df76452cd12bbfb0adf 100644
--- a/source/blender/blenkernel/intern/asset_library_test.cc
+++ b/source/blender/blenkernel/intern/asset_library_test.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "BKE_appdir.h"
 #include "BKE_asset_catalog.hh"
diff --git a/source/blender/blenkernel/intern/asset_test.cc b/source/blender/blenkernel/intern/asset_test.cc
index 77b98a8ac0af0c9fcb3ba972409acf8f48b3ca2a..fa8769862a81eec47e1b6eac9e15d6d3a6ab910d 100644
--- a/source/blender/blenkernel/intern/asset_test.cc
+++ b/source/blender/blenkernel/intern/asset_test.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "BKE_asset.h"
 
diff --git a/source/blender/blenkernel/intern/attribute.c b/source/blender/blenkernel/intern/attribute.c
index fdd84f3dfd42164720a10497a722c917842b9129..ba33a9fee97b76b1c59081fcf1155a6fcde54bf7 100644
--- a/source/blender/blenkernel/intern/attribute.c
+++ b/source/blender/blenkernel/intern/attribute.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/attribute_access.cc b/source/blender/blenkernel/intern/attribute_access.cc
index 68ab11a013bcc5c17cb870a903b603a29ae0a6ca..2f07ee55d7928c9b1104d0f2b19cab43c8572cb9 100644
--- a/source/blender/blenkernel/intern/attribute_access.cc
+++ b/source/blender/blenkernel/intern/attribute_access.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <utility>
 
diff --git a/source/blender/blenkernel/intern/attribute_access_intern.hh b/source/blender/blenkernel/intern/attribute_access_intern.hh
index 5341266e1824e1a19bbd509f370aa458a518840e..4eff878778ab1ae8dffd25fb0d2b66902172834e 100644
--- a/source/blender/blenkernel/intern/attribute_access_intern.hh
+++ b/source/blender/blenkernel/intern/attribute_access_intern.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_map.hh"
 #include "BLI_span.hh"
diff --git a/source/blender/blenkernel/intern/attribute_math.cc b/source/blender/blenkernel/intern/attribute_math.cc
index 5cdf329effb013387012bc2beb65d23ef96090d6..df3cab474cd386ff56757ad1805acbe283093058 100644
--- a/source/blender/blenkernel/intern/attribute_math.cc
+++ b/source/blender/blenkernel/intern/attribute_math.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_attribute_math.hh"
 
diff --git a/source/blender/blenkernel/intern/autoexec.c b/source/blender/blenkernel/intern/autoexec.c
index ed2b4e4ab1b4cb4b654893ab685c7a543deda8dc..5c5133b9a80b209eee2122f01a76f42fb13b15b0 100644
--- a/source/blender/blenkernel/intern/autoexec.c
+++ b/source/blender/blenkernel/intern/autoexec.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/blender.c b/source/blender/blenkernel/intern/blender.c
index b914b0cdf66a2b16a0228f797062919eaebb2318..947cdc0c8bf67a3a51d3e90e4989407c182c1710 100644
--- a/source/blender/blenkernel/intern/blender.c
+++ b/source/blender/blenkernel/intern/blender.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/blender_copybuffer.c b/source/blender/blenkernel/intern/blender_copybuffer.c
index 211d7f693d4705e5e8e0d68c50cee88d2e7aa503..f93b3efa8ddcbe5b244eea8908ef01c5011d1e0c 100644
--- a/source/blender/blenkernel/intern/blender_copybuffer.c
+++ b/source/blender/blenkernel/intern/blender_copybuffer.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/blender_undo.c b/source/blender/blenkernel/intern/blender_undo.c
index 6c443a94defa5c32f21a821be3ec2356e0bc7ece..c32941ccbc947a3a92638444d4831ca25809793a 100644
--- a/source/blender/blenkernel/intern/blender_undo.c
+++ b/source/blender/blenkernel/intern/blender_undo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/blender_user_menu.c b/source/blender/blenkernel/intern/blender_user_menu.c
index b186d376e52804aaa4af45e0e5a4ac287dba420a..86dd31576dd173c032522a09f5bc20e37e05a95b 100644
--- a/source/blender/blenkernel/intern/blender_user_menu.c
+++ b/source/blender/blenkernel/intern/blender_user_menu.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/blendfile.c b/source/blender/blenkernel/intern/blendfile.c
index 07fd859765abe48225c6b999a371d67e360070da..b2ba82008baea263618a98e5e6878364dcec12b9 100644
--- a/source/blender/blenkernel/intern/blendfile.c
+++ b/source/blender/blenkernel/intern/blendfile.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/blendfile_link_append.c b/source/blender/blenkernel/intern/blendfile_link_append.c
index 025d16007d8475f7b1b4bb97db256f9d62d2aca5..f06274c34d75df0f3a39adf919592fa6ba320e52 100644
--- a/source/blender/blenkernel/intern/blendfile_link_append.c
+++ b/source/blender/blenkernel/intern/blendfile_link_append.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/boids.c b/source/blender/blenkernel/intern/boids.c
index a9f26d0000769162c7faf651b40c92584885e384..a86d6e25ee962dd94d5af9a5772d9198770fb5f6 100644
--- a/source/blender/blenkernel/intern/boids.c
+++ b/source/blender/blenkernel/intern/boids.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 by Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/bpath.c b/source/blender/blenkernel/intern/bpath.c
index a1570b4e03173b9823f012fcc1448e3873ef5f59..f639d03ae0fdd091aad6758a62bfb3390fb915dd 100644
--- a/source/blender/blenkernel/intern/bpath.c
+++ b/source/blender/blenkernel/intern/bpath.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/bpath_test.cc b/source/blender/blenkernel/intern/bpath_test.cc
index 121d47af75fbaa6c1283a076d21f2c5ab740854b..ec1737276e16192781659d243be3d4eb45e14613 100644
--- a/source/blender/blenkernel/intern/bpath_test.cc
+++ b/source/blender/blenkernel/intern/bpath_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 #include "testing/testing.h"
 
 #include "CLG_log.h"
diff --git a/source/blender/blenkernel/intern/brush.c b/source/blender/blenkernel/intern/brush.c
index c86d4658cc9b3dd5531d5cdaa4916ad212ff9853..f091ebe1e32ab0d89b75b6fce331ea6d2e262f59 100644
--- a/source/blender/blenkernel/intern/brush.c
+++ b/source/blender/blenkernel/intern/brush.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/bvhutils.cc b/source/blender/blenkernel/intern/bvhutils.cc
index 5e7a4eea0cd5867dd5fc41082982f4a48793d31c..01e4eb702ccac5a3ce56c0b9ff856e53bf9a754d 100644
--- a/source/blender/blenkernel/intern/bvhutils.cc
+++ b/source/blender/blenkernel/intern/bvhutils.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/cachefile.c b/source/blender/blenkernel/intern/cachefile.c
index 75df2e98fcdf9b56e5c2ec3fc326779ff56e34a0..16fc05266e2386d39793b20cd881a0522095839c 100644
--- a/source/blender/blenkernel/intern/cachefile.c
+++ b/source/blender/blenkernel/intern/cachefile.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/callbacks.c b/source/blender/blenkernel/intern/callbacks.c
index 992eb896d2d63bea474083b26eb274fe731c10b4..640c36b9fbfeeef7e64c3930e5566025aa376195 100644
--- a/source/blender/blenkernel/intern/callbacks.c
+++ b/source/blender/blenkernel/intern/callbacks.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/camera.c b/source/blender/blenkernel/intern/camera.c
index d9c637eb177999092b7a35f67212f1c3f9210e84..57a95891a926ef2d7c759216e0aa0684c4d40db2 100644
--- a/source/blender/blenkernel/intern/camera.c
+++ b/source/blender/blenkernel/intern/camera.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/cdderivedmesh.c b/source/blender/blenkernel/intern/cdderivedmesh.c
index d8ad4dd89e4faa4737060e345cc68adbe681fa96..2d742a103afb05a8ba63c0b53c2f7d63fa0b304e 100644
--- a/source/blender/blenkernel/intern/cdderivedmesh.c
+++ b/source/blender/blenkernel/intern/cdderivedmesh.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/cloth.c b/source/blender/blenkernel/intern/cloth.c
index 43b8690e2191018cf26553d90c54d14e86554e7e..103de6722489092c7b2e7e4b863a238b47495190 100644
--- a/source/blender/blenkernel/intern/cloth.c
+++ b/source/blender/blenkernel/intern/cloth.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/collection.c b/source/blender/blenkernel/intern/collection.c
index 79f40c1c8882be34e4f5fd81bc3dffc896d3a3ec..af776e9dbb09a989aa50e08e3dcc896ee9e8a693 100644
--- a/source/blender/blenkernel/intern/collection.c
+++ b/source/blender/blenkernel/intern/collection.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/collision.c b/source/blender/blenkernel/intern/collision.c
index 671c6530685d1f590f62caace0adb0ea72cb8529..ae99f0d17df77bafdc8464ab7631ccfd9d1f9849 100644
--- a/source/blender/blenkernel/intern/collision.c
+++ b/source/blender/blenkernel/intern/collision.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/colorband.c b/source/blender/blenkernel/intern/colorband.c
index 52a599a0361b05f3d7a9ca9de12278fa8176d2e9..b2f817b7821f197dac064ce61253f4bff24158b4 100644
--- a/source/blender/blenkernel/intern/colorband.c
+++ b/source/blender/blenkernel/intern/colorband.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/colortools.c b/source/blender/blenkernel/intern/colortools.c
index b12b19453ae6f70a5c502dde9046a4ac7e50fa5e..c3d66d4463ddc0067e2b95b8b0e88d0da0acbf10 100644
--- a/source/blender/blenkernel/intern/colortools.c
+++ b/source/blender/blenkernel/intern/colortools.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/constraint.c b/source/blender/blenkernel/intern/constraint.c
index 3b7f91b93c0827388c216207456f4a17ce138db0..69002a71f1dd6ee07fa37e38242579e3b8c76ad5 100644
--- a/source/blender/blenkernel/intern/constraint.c
+++ b/source/blender/blenkernel/intern/constraint.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/context.c b/source/blender/blenkernel/intern/context.c
index ceaed5d2bbaa5bdce242277fb138c600ad35f0b1..3f524eaf230966b9c61d39438bc8540fed8f84e8 100644
--- a/source/blender/blenkernel/intern/context.c
+++ b/source/blender/blenkernel/intern/context.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/crazyspace.c b/source/blender/blenkernel/intern/crazyspace.c
index 0bf83ed5036a781a6e03d5f46f80a6037a0a39c7..9d13bf3ac11bff8e4560721bc591e433dd6e9c8b 100644
--- a/source/blender/blenkernel/intern/crazyspace.c
+++ b/source/blender/blenkernel/intern/crazyspace.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/cryptomatte.cc b/source/blender/blenkernel/intern/cryptomatte.cc
index 7481d4df351451a80e1f63899d04376587d3aeb0..102bda0f2b6940fb919a58c36acded77c28ea5a9 100644
--- a/source/blender/blenkernel/intern/cryptomatte.cc
+++ b/source/blender/blenkernel/intern/cryptomatte.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/cryptomatte_test.cc b/source/blender/blenkernel/intern/cryptomatte_test.cc
index 85ab7e43d22c5e37019d75fb2967be4a1ede7ef8..2f15242b4a43b92828833023ded4395bb625f073 100644
--- a/source/blender/blenkernel/intern/cryptomatte_test.cc
+++ b/source/blender/blenkernel/intern/cryptomatte_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 #include "testing/testing.h"
 
 #include "BKE_cryptomatte.h"
diff --git a/source/blender/blenkernel/intern/curve.cc b/source/blender/blenkernel/intern/curve.cc
index c611e2807934fca96837229a6ecb363125ad4b25..c6c0111780eaf99102c21144655b1980421c84c0 100644
--- a/source/blender/blenkernel/intern/curve.cc
+++ b/source/blender/blenkernel/intern/curve.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/curve_bevel.c b/source/blender/blenkernel/intern/curve_bevel.c
index 18e4ab3ade11cb048615c869b6c861aa10a2fc90..ffef22fb498deb05065e878ace2192c37f33f727 100644
--- a/source/blender/blenkernel/intern/curve_bevel.c
+++ b/source/blender/blenkernel/intern/curve_bevel.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/curve_convert.c b/source/blender/blenkernel/intern/curve_convert.c
index 98a9cbc2bcf9f44b3222c47ac7d324d5f9506b5d..285e697852279d1c32324fa3f0d75c9bba32edf5 100644
--- a/source/blender/blenkernel/intern/curve_convert.c
+++ b/source/blender/blenkernel/intern/curve_convert.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/curve_decimate.c b/source/blender/blenkernel/intern/curve_decimate.c
index 62de7c74183ad407994d7369a7622a1443d817e0..200b827703050d13851d930fb632648b51016538 100644
--- a/source/blender/blenkernel/intern/curve_decimate.c
+++ b/source/blender/blenkernel/intern/curve_decimate.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/curve_deform.c b/source/blender/blenkernel/intern/curve_deform.c
index d754f8cc27d6a98c13eabd3b5d8628cdf336f408..f76e4202994d7ade407793a2bc9019e308387de2 100644
--- a/source/blender/blenkernel/intern/curve_deform.c
+++ b/source/blender/blenkernel/intern/curve_deform.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/curve_eval.cc b/source/blender/blenkernel/intern/curve_eval.cc
index e2461adaaca46007d4f7b412b25315ab8513fd95..7fb833e67f85f356943a1a0510a889e81006484e 100644
--- a/source/blender/blenkernel/intern/curve_eval.cc
+++ b/source/blender/blenkernel/intern/curve_eval.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 #include "BLI_index_range.hh"
diff --git a/source/blender/blenkernel/intern/curve_to_mesh_convert.cc b/source/blender/blenkernel/intern/curve_to_mesh_convert.cc
index 833b2fe99ec612866acd1886927e8500f1c6c4d9..51edf4a65919228d09467a8bae9baec57ee84269 100644
--- a/source/blender/blenkernel/intern/curve_to_mesh_convert.cc
+++ b/source/blender/blenkernel/intern/curve_to_mesh_convert.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 #include "BLI_set.hh"
diff --git a/source/blender/blenkernel/intern/curveprofile.cc b/source/blender/blenkernel/intern/curveprofile.cc
index 8f387be41d38a2b9d1037c4bc3cb3b07cc3a05f8..2f3fc2e95d8d0ffb12a8385e7519337581819d83 100644
--- a/source/blender/blenkernel/intern/curveprofile.cc
+++ b/source/blender/blenkernel/intern/curveprofile.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/curves.cc b/source/blender/blenkernel/intern/curves.cc
index 819f1551427a0db61183f0a04a4f5358ad5d0b10..097cfbf3101b8a9c8d88d15cfe77fc37e9258ab1 100644
--- a/source/blender/blenkernel/intern/curves.cc
+++ b/source/blender/blenkernel/intern/curves.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/customdata.cc b/source/blender/blenkernel/intern/customdata.cc
index 6db5ae7567fa35411e729c9a0d8a925374e09feb..1ce965c0062114df3e29e04aa538582506e48d53 100644
--- a/source/blender/blenkernel/intern/customdata.cc
+++ b/source/blender/blenkernel/intern/customdata.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/customdata_file.c b/source/blender/blenkernel/intern/customdata_file.c
index ef86a65f47d2d2ab6042a36d247666945462d9f1..9716b4909b2ad83d8dcc599012c873445adc9c17 100644
--- a/source/blender/blenkernel/intern/customdata_file.c
+++ b/source/blender/blenkernel/intern/customdata_file.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/data_transfer.c b/source/blender/blenkernel/intern/data_transfer.c
index 0ad7efb6347e76b5d7285945aa1f30512b2031eb..f1b69bbab78606cb8bb80320f7c2af811140be65 100644
--- a/source/blender/blenkernel/intern/data_transfer.c
+++ b/source/blender/blenkernel/intern/data_transfer.c
@@ -1,22 +1,6 @@
 
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/data_transfer_intern.h b/source/blender/blenkernel/intern/data_transfer_intern.h
index b5b3db31fbf5c6b83cebfdda3112b4f1c517d017..defa87e899b37504a0731ed7db027acb284f07d0 100644
--- a/source/blender/blenkernel/intern/data_transfer_intern.h
+++ b/source/blender/blenkernel/intern/data_transfer_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/deform.c b/source/blender/blenkernel/intern/deform.c
index 6b429a146d4f929df15c4d9c0e3831c1cac488ac..1d276e9108c9f38a3cb5ed492970b25fb9401462 100644
--- a/source/blender/blenkernel/intern/deform.c
+++ b/source/blender/blenkernel/intern/deform.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/displist.cc b/source/blender/blenkernel/intern/displist.cc
index 78177095a77e9f409a499b99477d61fd89a260dc..793af80ec74e0aa9702c1a619d32bab43d59ddba 100644
--- a/source/blender/blenkernel/intern/displist.cc
+++ b/source/blender/blenkernel/intern/displist.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/displist_tangent.c b/source/blender/blenkernel/intern/displist_tangent.c
index 4451961ad94b826caed7cd8ad82818f99217b5a9..eb6bdd8d5e90164eb918caff1e2f7ed836e02ed8 100644
--- a/source/blender/blenkernel/intern/displist_tangent.c
+++ b/source/blender/blenkernel/intern/displist_tangent.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/dynamicpaint.c b/source/blender/blenkernel/intern/dynamicpaint.c
index bc5a0ed15381c3380a001b7edbec222d476d7918..1136ec45fd4457c53b9b684c5e831af99f12f7b5 100644
--- a/source/blender/blenkernel/intern/dynamicpaint.c
+++ b/source/blender/blenkernel/intern/dynamicpaint.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/editlattice.c b/source/blender/blenkernel/intern/editlattice.c
index d48eb698c360f4bbad33573e4939dd488fbd4217..af783ceccbb9a3db13313476ef5e892f8bdd2f0a 100644
--- a/source/blender/blenkernel/intern/editlattice.c
+++ b/source/blender/blenkernel/intern/editlattice.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/editmesh.c b/source/blender/blenkernel/intern/editmesh.c
index 0774a1a3d884343c8d9a04c51f96eee4ea08077e..114d33b1a3de22b4e92d4e455783b20f4cacf84d 100644
--- a/source/blender/blenkernel/intern/editmesh.c
+++ b/source/blender/blenkernel/intern/editmesh.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/editmesh_bvh.c b/source/blender/blenkernel/intern/editmesh_bvh.c
index e200a504b5d6f6ef26491fe2f79f74d0004acb79..edf3539681cf372c403fdabc5c3cedb5016544a4 100644
--- a/source/blender/blenkernel/intern/editmesh_bvh.c
+++ b/source/blender/blenkernel/intern/editmesh_bvh.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/editmesh_cache.c b/source/blender/blenkernel/intern/editmesh_cache.c
index d0509c94fc66c90da3855d0bc94c13fa23fc4707..f80f300d14928f5af398ab8f6ec714de2df55f20 100644
--- a/source/blender/blenkernel/intern/editmesh_cache.c
+++ b/source/blender/blenkernel/intern/editmesh_cache.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/editmesh_tangent.c b/source/blender/blenkernel/intern/editmesh_tangent.c
index ff0d47e534ec99a33e3102fa66d5ee176b6e8507..632f2ddac68467c76bd22c7163963b4bbdf19c3b 100644
--- a/source/blender/blenkernel/intern/editmesh_tangent.c
+++ b/source/blender/blenkernel/intern/editmesh_tangent.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/effect.c b/source/blender/blenkernel/intern/effect.c
index 1f1915f60ca70d131ae401404d0ae2c43e4419da..2f760597e1ad24f13f2e75033771827f117ae93e 100644
--- a/source/blender/blenkernel/intern/effect.c
+++ b/source/blender/blenkernel/intern/effect.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/fcurve.c b/source/blender/blenkernel/intern/fcurve.c
index f7a547543af886705cdd1e00f9f8070aeb7f44be..34357c3e454383c800d2c5cfecaf142192866d2e 100644
--- a/source/blender/blenkernel/intern/fcurve.c
+++ b/source/blender/blenkernel/intern/fcurve.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/fcurve_cache.c b/source/blender/blenkernel/intern/fcurve_cache.c
index 4f27bad5b917b72a3c3a00feeed7efe1a865f7d4..d67a0ad0e1bb1024b4f6e93d7a538555714624b1 100644
--- a/source/blender/blenkernel/intern/fcurve_cache.c
+++ b/source/blender/blenkernel/intern/fcurve_cache.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/fcurve_driver.c b/source/blender/blenkernel/intern/fcurve_driver.c
index e71217fea9eb00b003d66d3c85212d59e83e0a6a..5d54c5c039b5b94661a9abc881702b29fa905ba1 100644
--- a/source/blender/blenkernel/intern/fcurve_driver.c
+++ b/source/blender/blenkernel/intern/fcurve_driver.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/fcurve_test.cc b/source/blender/blenkernel/intern/fcurve_test.cc
index 7d6b5fd88be8a05a89eed4df143d302435570ffb..1912e3a9d8d3625e312fa35bd6087ba542e548d4 100644
--- a/source/blender/blenkernel/intern/fcurve_test.cc
+++ b/source/blender/blenkernel/intern/fcurve_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 #include "testing/testing.h"
 
 #include "MEM_guardedalloc.h"
diff --git a/source/blender/blenkernel/intern/fluid.c b/source/blender/blenkernel/intern/fluid.c
index 0c9e352da12f81eaf200535615757a4090f242ee..ef2fa2266c4a3f0bfea343a6f599cf7a578dd2f8 100644
--- a/source/blender/blenkernel/intern/fluid.c
+++ b/source/blender/blenkernel/intern/fluid.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/fmodifier.c b/source/blender/blenkernel/intern/fmodifier.c
index d140e70978a697fd87e6d2aeba9b6bd35e632661..1bb7c49d616aa7034c2eb84e3cfdcbbce0f9019a 100644
--- a/source/blender/blenkernel/intern/fmodifier.c
+++ b/source/blender/blenkernel/intern/fmodifier.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/freestyle.c b/source/blender/blenkernel/intern/freestyle.c
index 68b7e27497078c2fa27456127ae513dbfdc71055..a0649930dfc34093f2918827cf5be082484f3634 100644
--- a/source/blender/blenkernel/intern/freestyle.c
+++ b/source/blender/blenkernel/intern/freestyle.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/geometry_component_curve.cc b/source/blender/blenkernel/intern/geometry_component_curve.cc
index 16edbc36f9c31fb0b7323cc5b288fc6f7876b090..5921f853389ff24482e9abbaa4356ffcfff09993 100644
--- a/source/blender/blenkernel/intern/geometry_component_curve.cc
+++ b/source/blender/blenkernel/intern/geometry_component_curve.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/blenkernel/intern/geometry_component_instances.cc b/source/blender/blenkernel/intern/geometry_component_instances.cc
index b411c793298f0e07896531482effaada582c76db..b83a8b1ee94c6fa59a322b57c4395c2d0d86dffd 100644
--- a/source/blender/blenkernel/intern/geometry_component_instances.cc
+++ b/source/blender/blenkernel/intern/geometry_component_instances.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <mutex>
 
diff --git a/source/blender/blenkernel/intern/geometry_component_mesh.cc b/source/blender/blenkernel/intern/geometry_component_mesh.cc
index 2509448d8aa9acf28629f14538cefd4320297307..2f8ff9444209bc781da17718cadd27d455028bea 100644
--- a/source/blender/blenkernel/intern/geometry_component_mesh.cc
+++ b/source/blender/blenkernel/intern/geometry_component_mesh.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_listbase.h"
 #include "BLI_task.hh"
diff --git a/source/blender/blenkernel/intern/geometry_component_pointcloud.cc b/source/blender/blenkernel/intern/geometry_component_pointcloud.cc
index 80c09a7ed4a6dd2d4683c63a82cdf8912ad98e76..f6f3c4e1b4e39dd83188cf7b7b50a5eb31801478 100644
--- a/source/blender/blenkernel/intern/geometry_component_pointcloud.cc
+++ b/source/blender/blenkernel/intern/geometry_component_pointcloud.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_pointcloud_types.h"
 
diff --git a/source/blender/blenkernel/intern/geometry_component_volume.cc b/source/blender/blenkernel/intern/geometry_component_volume.cc
index e9874153b4c3ebe00bca8c383dfeefabf1cc1a8a..154cac4e2265f23a39432bb2e23e5976a680b4ea 100644
--- a/source/blender/blenkernel/intern/geometry_component_volume.cc
+++ b/source/blender/blenkernel/intern/geometry_component_volume.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_volume_types.h"
 
diff --git a/source/blender/blenkernel/intern/geometry_set.cc b/source/blender/blenkernel/intern/geometry_set.cc
index c1e386c626b2964c025f70b150743e093c68c229..9c7cfa04e0b8035be55642bada331b72b215fc7d 100644
--- a/source/blender/blenkernel/intern/geometry_set.cc
+++ b/source/blender/blenkernel/intern/geometry_set.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_map.hh"
 #include "BLI_task.hh"
diff --git a/source/blender/blenkernel/intern/geometry_set_instances.cc b/source/blender/blenkernel/intern/geometry_set_instances.cc
index 42d2211c360ef22aea5e62352c04f75643baa4e3..ff08b5967707bd2e12b32392b0c06c50c35ae1f8 100644
--- a/source/blender/blenkernel/intern/geometry_set_instances.cc
+++ b/source/blender/blenkernel/intern/geometry_set_instances.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_collection.h"
 #include "BKE_geometry_set_instances.hh"
diff --git a/source/blender/blenkernel/intern/gpencil.c b/source/blender/blenkernel/intern/gpencil.c
index cb18c28b3dc4c805b7b3408d29a49b7ad978d751..fe3b1d0c306127ce5c93d37fb9383fa1e57b3218 100644
--- a/source/blender/blenkernel/intern/gpencil.c
+++ b/source/blender/blenkernel/intern/gpencil.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/gpencil_curve.c b/source/blender/blenkernel/intern/gpencil_curve.c
index d633678b87348acea92a88bad8c505e9420edc56..5ce45f6df5a1d9d08117cb1cfde15af6cc48c417 100644
--- a/source/blender/blenkernel/intern/gpencil_curve.c
+++ b/source/blender/blenkernel/intern/gpencil_curve.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/gpencil_geom.cc b/source/blender/blenkernel/intern/gpencil_geom.cc
index 9abdbceec61e55bc35ba356392160fd54f48b179..365171b300f80ef8edfc7f6d90357b28f232efd1 100644
--- a/source/blender/blenkernel/intern/gpencil_geom.cc
+++ b/source/blender/blenkernel/intern/gpencil_geom.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/gpencil_modifier.c b/source/blender/blenkernel/intern/gpencil_modifier.c
index 74db151261f49aa06627a6dfc810ac4c2d7c177e..3d9043e68005c284d9eb94c027878fa2a1639174 100644
--- a/source/blender/blenkernel/intern/gpencil_modifier.c
+++ b/source/blender/blenkernel/intern/gpencil_modifier.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/gpencil_update_cache.c b/source/blender/blenkernel/intern/gpencil_update_cache.c
index 6f079d6dc6090f52ff1f2b15c9a8c4a7fc5b6029..2258f8c353fc000501b24e9a6b316e307052a346 100644
--- a/source/blender/blenkernel/intern/gpencil_update_cache.c
+++ b/source/blender/blenkernel/intern/gpencil_update_cache.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/icons.cc b/source/blender/blenkernel/intern/icons.cc
index 059caaa27f94c59cf9352167ef3a09ec7b5d5695..8883613786b429b1d7b6b98377990d8f38f58aff 100644
--- a/source/blender/blenkernel/intern/icons.cc
+++ b/source/blender/blenkernel/intern/icons.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006-2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006-2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/icons_rasterize.c b/source/blender/blenkernel/intern/icons_rasterize.c
index 355a94c077b4bf255de7d33fdba311d40ae7c8de..5603d84022da43fdb7dd8c8e7c5ba41f825475da 100644
--- a/source/blender/blenkernel/intern/icons_rasterize.c
+++ b/source/blender/blenkernel/intern/icons_rasterize.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/idprop.c b/source/blender/blenkernel/intern/idprop.c
index bb6458331da5034533e35d4c1a8c8567766e76fc..d00fc8814e0f9789fb3e01b9a999bc27abe9f08f 100644
--- a/source/blender/blenkernel/intern/idprop.c
+++ b/source/blender/blenkernel/intern/idprop.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/idprop_create.cc b/source/blender/blenkernel/intern/idprop_create.cc
index 12f2fdc6a637b6be57df726c5a6f4dc86b6d9697..f549393fd129ee47db46e6dbfefe903100840148 100644
--- a/source/blender/blenkernel/intern/idprop_create.cc
+++ b/source/blender/blenkernel/intern/idprop_create.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include <type_traits>
 
diff --git a/source/blender/blenkernel/intern/idprop_serialize.cc b/source/blender/blenkernel/intern/idprop_serialize.cc
index 08a7f13b806b2eb9b571554e12a77279c327f11e..9e5733e5a2b230b74b4651d7328dd1943c50aab5 100644
--- a/source/blender/blenkernel/intern/idprop_serialize.cc
+++ b/source/blender/blenkernel/intern/idprop_serialize.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include <optional>
 
diff --git a/source/blender/blenkernel/intern/idprop_serialize_test.cc b/source/blender/blenkernel/intern/idprop_serialize_test.cc
index eeee3fc2aeaa3673f7759c3e127d874f512eba33..6ab4a0b282200abbe7d965acfca36ab1e3c9e747 100644
--- a/source/blender/blenkernel/intern/idprop_serialize_test.cc
+++ b/source/blender/blenkernel/intern/idprop_serialize_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenkernel/intern/idprop_utils.c b/source/blender/blenkernel/intern/idprop_utils.c
index 0cc212e1880d445d93632e05020e8ef37894c48d..2ffa5125b1d185bddb6c75ff98eb4c88461d53dd 100644
--- a/source/blender/blenkernel/intern/idprop_utils.c
+++ b/source/blender/blenkernel/intern/idprop_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/idtype.c b/source/blender/blenkernel/intern/idtype.c
index 98bbd920615097e9c905d11f7455884b6f4bc432..2551bb12511cc2bcc54340fa9935d947c200a8ac 100644
--- a/source/blender/blenkernel/intern/idtype.c
+++ b/source/blender/blenkernel/intern/idtype.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/image.c b/source/blender/blenkernel/intern/image.c
index 040257fe976d828ab26ba8a966278d2c04f639b5..68816731593f5e7c23c4026fd25c0ad7043c84f0 100644
--- a/source/blender/blenkernel/intern/image.c
+++ b/source/blender/blenkernel/intern/image.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/image_gen.c b/source/blender/blenkernel/intern/image_gen.c
index bef14b6ad70fa737fd24ccdbee415c83e762bfd2..5a299582890261f7b8d529040143856b7f59d185 100644
--- a/source/blender/blenkernel/intern/image_gen.c
+++ b/source/blender/blenkernel/intern/image_gen.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/image_gpu.cc b/source/blender/blenkernel/intern/image_gpu.cc
index eaee1fd2c30d2d5b732c6b237a49e9242710049d..a12ae2951f408c9e2c38dd7c6f87e891095e5656 100644
--- a/source/blender/blenkernel/intern/image_gpu.cc
+++ b/source/blender/blenkernel/intern/image_gpu.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/image_partial_update.cc b/source/blender/blenkernel/intern/image_partial_update.cc
index 876e5276e5a282180fdecfca2a43b0402a055c3b..e1e4a12533a85f4dd57fa2e5dcaccfda03d530cb 100644
--- a/source/blender/blenkernel/intern/image_partial_update.cc
+++ b/source/blender/blenkernel/intern/image_partial_update.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 /**
  * \file image_gpu_partial_update.cc
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/image_partial_update_test.cc b/source/blender/blenkernel/intern/image_partial_update_test.cc
index bf12c27241ece8bc8f8ec872e38d42e74241a71b..29a13e28f71b0b1a875ac642e33be4e20394b4f4 100644
--- a/source/blender/blenkernel/intern/image_partial_update_test.cc
+++ b/source/blender/blenkernel/intern/image_partial_update_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 #include "testing/testing.h"
 
 #include "CLG_log.h"
diff --git a/source/blender/blenkernel/intern/image_save.c b/source/blender/blenkernel/intern/image_save.c
index 329bc7b498bef74da2075bf17f6bca4ddf744424..ae8f4c044fe5c5d7e8810edf26370a10c01a26bc 100644
--- a/source/blender/blenkernel/intern/image_save.c
+++ b/source/blender/blenkernel/intern/image_save.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/ipo.c b/source/blender/blenkernel/intern/ipo.c
index d87331fd65cf45aae4b445da6d43997710ca4bd7..e5c1cf96f8c2342bb5e1a63c54813592e06d5530 100644
--- a/source/blender/blenkernel/intern/ipo.c
+++ b/source/blender/blenkernel/intern/ipo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/kelvinlet.c b/source/blender/blenkernel/intern/kelvinlet.c
index a7b48107873804118b4d4bc355c3bd5f75ab1f99..73a84f06ad87530ea755f7e0cc01fc1c7dfd3da0 100644
--- a/source/blender/blenkernel/intern/kelvinlet.c
+++ b/source/blender/blenkernel/intern/kelvinlet.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/key.c b/source/blender/blenkernel/intern/key.c
index 0df493e28c03825202fe23c56362dd1e3ff00819..b28d9db92cf4c207b5a16a37d9ae1ef9f4dfb2b5 100644
--- a/source/blender/blenkernel/intern/key.c
+++ b/source/blender/blenkernel/intern/key.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/keyconfig.c b/source/blender/blenkernel/intern/keyconfig.c
index 84e11c1166ee8b6a62e2816588209a2b0cdf4dba..3faaebca65aa6be9b678a937e2775afac617e2d7 100644
--- a/source/blender/blenkernel/intern/keyconfig.c
+++ b/source/blender/blenkernel/intern/keyconfig.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/lattice.c b/source/blender/blenkernel/intern/lattice.c
index 2f5c5d0a0d56e2d5a69f151a77c91f48feee243d..b5c025a40b644cf830431028ba69f81a54cb842d 100644
--- a/source/blender/blenkernel/intern/lattice.c
+++ b/source/blender/blenkernel/intern/lattice.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/lattice_deform.c b/source/blender/blenkernel/intern/lattice_deform.c
index af721412472b2c287a042b7f7210b5bad29a889c..70f8522aab42dbd5db2534fe30ec234aa1a1aaaf 100644
--- a/source/blender/blenkernel/intern/lattice_deform.c
+++ b/source/blender/blenkernel/intern/lattice_deform.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/lattice_deform_test.cc b/source/blender/blenkernel/intern/lattice_deform_test.cc
index bface94d9d4c4d0c33151bf507e763c6b2d3d82b..1b1bca5fc530653e7912244e90df40877738d018 100644
--- a/source/blender/blenkernel/intern/lattice_deform_test.cc
+++ b/source/blender/blenkernel/intern/lattice_deform_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 #include "testing/testing.h"
 
 #include "BKE_idtype.h"
diff --git a/source/blender/blenkernel/intern/layer.c b/source/blender/blenkernel/intern/layer.c
index a59dd6f2e0e373f2efeb453347bb4ca4b207a0d4..ccff4dbed03d1ae7a7ef9ab386ed830b5579ee31 100644
--- a/source/blender/blenkernel/intern/layer.c
+++ b/source/blender/blenkernel/intern/layer.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/layer_test.cc b/source/blender/blenkernel/intern/layer_test.cc
index c8e5de75bfa0262924be56e3b1cc8ad089217d0f..8e6a89838211c866fe2bf375c9da209b4be6b557 100644
--- a/source/blender/blenkernel/intern/layer_test.cc
+++ b/source/blender/blenkernel/intern/layer_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 #include "testing/testing.h"
 
 #include "MEM_guardedalloc.h"
diff --git a/source/blender/blenkernel/intern/layer_utils.c b/source/blender/blenkernel/intern/layer_utils.c
index 3760fe8a97605f962520cdbb461a4ca57b7746d4..057309d0896e961ea19e8253fa258f799ade4865 100644
--- a/source/blender/blenkernel/intern/layer_utils.c
+++ b/source/blender/blenkernel/intern/layer_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/lib_id.c b/source/blender/blenkernel/intern/lib_id.c
index 6c19c7a328b1d1a24422aed61f7a54a3ac9b5753..2baecea51ff082a99fcdc26b83351f9326fd1f16 100644
--- a/source/blender/blenkernel/intern/lib_id.c
+++ b/source/blender/blenkernel/intern/lib_id.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/lib_id_delete.c b/source/blender/blenkernel/intern/lib_id_delete.c
index 5db70d85e71f4942ef40aab25893e272f62c640c..cf25af1c6373db33ff54367e7775e3317322af3c 100644
--- a/source/blender/blenkernel/intern/lib_id_delete.c
+++ b/source/blender/blenkernel/intern/lib_id_delete.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/lib_id_eval.c b/source/blender/blenkernel/intern/lib_id_eval.c
index a29d9270d72a2b659985cccb30e0a5d9f23c7736..b367d1a32cad1d70c9a956256c6a0642405401b0 100644
--- a/source/blender/blenkernel/intern/lib_id_eval.c
+++ b/source/blender/blenkernel/intern/lib_id_eval.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/lib_id_remapper.cc b/source/blender/blenkernel/intern/lib_id_remapper.cc
index c1734c9826a66f7c7f74b78fbe5d118068cf6f6d..7347ccc258d20126de9deae5322d05d0402a20de 100644
--- a/source/blender/blenkernel/intern/lib_id_remapper.cc
+++ b/source/blender/blenkernel/intern/lib_id_remapper.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. */
 
 #include "DNA_ID.h"
 
diff --git a/source/blender/blenkernel/intern/lib_id_remapper_test.cc b/source/blender/blenkernel/intern/lib_id_remapper_test.cc
index 594f64dac7347ee1a853651974756a555ebf14f8..a6cfe60153d313ffacaaf8220f7a12254d8c83dd 100644
--- a/source/blender/blenkernel/intern/lib_id_remapper_test.cc
+++ b/source/blender/blenkernel/intern/lib_id_remapper_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenkernel/intern/lib_id_test.cc b/source/blender/blenkernel/intern/lib_id_test.cc
index f6988a2d71fed7516cd6451873c40a6fbd7ee8ae..d6101d71be51e1124b23e66ba8d1f3fe1aeff622 100644
--- a/source/blender/blenkernel/intern/lib_id_test.cc
+++ b/source/blender/blenkernel/intern/lib_id_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 #include "testing/testing.h"
 
 #include "MEM_guardedalloc.h"
diff --git a/source/blender/blenkernel/intern/lib_intern.h b/source/blender/blenkernel/intern/lib_intern.h
index 7305785573b9b4828ffd249794dd44601dc6214f..06200b8ebf54941561a7e38efb682028fc6eac3f 100644
--- a/source/blender/blenkernel/intern/lib_intern.h
+++ b/source/blender/blenkernel/intern/lib_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/lib_override.c b/source/blender/blenkernel/intern/lib_override.c
index 59cb6b2036e1c836760de9793f75b24c3fc32e44..d65c0bb4e955cb711dfd60ec0479de814667bffa 100644
--- a/source/blender/blenkernel/intern/lib_override.c
+++ b/source/blender/blenkernel/intern/lib_override.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/lib_override_proxy_conversion.c b/source/blender/blenkernel/intern/lib_override_proxy_conversion.c
index d99a9b57a6e0b9020c35d9d99f76dc41be52cda7..809235ad24ce2ba4da316f0af307c088a1446593 100644
--- a/source/blender/blenkernel/intern/lib_override_proxy_conversion.c
+++ b/source/blender/blenkernel/intern/lib_override_proxy_conversion.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/lib_query.c b/source/blender/blenkernel/intern/lib_query.c
index f49af9abffe07753f2efb466000a70dec84be2d0..d963c0a4046ec1deca7e243c07e02c383694fe05 100644
--- a/source/blender/blenkernel/intern/lib_query.c
+++ b/source/blender/blenkernel/intern/lib_query.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/lib_remap.c b/source/blender/blenkernel/intern/lib_remap.c
index 8e375ff16b57a79135038d2cf148eddecf6c92c3..a05067e16f6868ba5c55f1cd1c8d0b19a19c8d22 100644
--- a/source/blender/blenkernel/intern/lib_remap.c
+++ b/source/blender/blenkernel/intern/lib_remap.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/lib_remap_test.cc b/source/blender/blenkernel/intern/lib_remap_test.cc
index 266ada3663d5554898436339791eca9d1c294f5a..d0175590047d22dc9b38b20f8b4b161c76991c9b 100644
--- a/source/blender/blenkernel/intern/lib_remap_test.cc
+++ b/source/blender/blenkernel/intern/lib_remap_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. */
 #include "testing/testing.h"
 
 #include "BLI_utildefines.h"
diff --git a/source/blender/blenkernel/intern/library.c b/source/blender/blenkernel/intern/library.c
index c97b003d241ce0c5bff4cab88507f936aa301708..03a17b2ecc56e2189745e4e4f864a0c25323b9b9 100644
--- a/source/blender/blenkernel/intern/library.c
+++ b/source/blender/blenkernel/intern/library.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/light.c b/source/blender/blenkernel/intern/light.c
index e73cda7e24d2efffcee3569e2f395ce6331c7d35..879e4e2492835d82a0cf5d5e0480730d020c218e 100644
--- a/source/blender/blenkernel/intern/light.c
+++ b/source/blender/blenkernel/intern/light.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/lightprobe.c b/source/blender/blenkernel/intern/lightprobe.c
index 035e41815e57d9ba39b06734c522a495b38a024a..9e731b1f878619a2d9ddfb754a90e2d04a517436 100644
--- a/source/blender/blenkernel/intern/lightprobe.c
+++ b/source/blender/blenkernel/intern/lightprobe.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/linestyle.c b/source/blender/blenkernel/intern/linestyle.c
index 95f41ab4b394f0dc7c05dbc18c5d1ad0674beb14..e50d626342310af5730b2e95923e11f991662da8 100644
--- a/source/blender/blenkernel/intern/linestyle.c
+++ b/source/blender/blenkernel/intern/linestyle.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/main.c b/source/blender/blenkernel/intern/main.c
index 53b1a9c9e166fb6377a43d5068972947d7bcf934..b25432780ed8b350b2b133f3138bc004a7369ca1 100644
--- a/source/blender/blenkernel/intern/main.c
+++ b/source/blender/blenkernel/intern/main.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/main_idmap.c b/source/blender/blenkernel/intern/main_idmap.c
index 38523f22aad12acf62e4262dd100637f4e488b45..a01dbd14e65b93ff4768fa6ac408e6fa46d450c8 100644
--- a/source/blender/blenkernel/intern/main_idmap.c
+++ b/source/blender/blenkernel/intern/main_idmap.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <stdlib.h>
 #include <string.h>
diff --git a/source/blender/blenkernel/intern/mask.c b/source/blender/blenkernel/intern/mask.c
index 12bbab57cf224824ca78c28877f6936bfa29e79f..fca7c10ca7788a38319b75b246642369796ff06b 100644
--- a/source/blender/blenkernel/intern/mask.c
+++ b/source/blender/blenkernel/intern/mask.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mask_evaluate.c b/source/blender/blenkernel/intern/mask_evaluate.c
index 69fc7554eedcfde05d2afe92f57aeb7df08a0e79..3425510c8b95afeebe44fb6ebcf87a70c9c94b35 100644
--- a/source/blender/blenkernel/intern/mask_evaluate.c
+++ b/source/blender/blenkernel/intern/mask_evaluate.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mask_rasterize.c b/source/blender/blenkernel/intern/mask_rasterize.c
index b08769576206d2d5a621e31ef9a1014e374e380c..f783121d02c3d5f8f5ad3157e6818a362d48ad01 100644
--- a/source/blender/blenkernel/intern/mask_rasterize.c
+++ b/source/blender/blenkernel/intern/mask_rasterize.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/material.c b/source/blender/blenkernel/intern/material.c
index 1c1b2c2cd2723cadbf0f7d346ae6a9fa3ae7b343..c559c6fe807bd20a236e7d0e5313b9a0b7e49fef 100644
--- a/source/blender/blenkernel/intern/material.c
+++ b/source/blender/blenkernel/intern/material.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mball.c b/source/blender/blenkernel/intern/mball.c
index 3c5cdb1ba7881c242964f1e2e35310d93e1b5821..1340e53f06e0d34ac6c52a91442721fe54d2ff4b 100644
--- a/source/blender/blenkernel/intern/mball.c
+++ b/source/blender/blenkernel/intern/mball.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mball_tessellate.c b/source/blender/blenkernel/intern/mball_tessellate.c
index eebe6efad7868cb635f1903627d14bca0e903716..b3e6a854811f43eb5469fffe33020c99e6bb8a4f 100644
--- a/source/blender/blenkernel/intern/mball_tessellate.c
+++ b/source/blender/blenkernel/intern/mball_tessellate.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh.cc b/source/blender/blenkernel/intern/mesh.cc
index 4e53472692266607fca56cce63c14d811d29724e..4e855b6dc2cf50c83f25116d570a6e7d67145a68 100644
--- a/source/blender/blenkernel/intern/mesh.cc
+++ b/source/blender/blenkernel/intern/mesh.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_boolean_convert.cc b/source/blender/blenkernel/intern/mesh_boolean_convert.cc
index a4a5fe2be2eff6175b63ffb385d0c65ca1abf1fc..ec66cd0d84d773a42d31894d5beaf8c3b120cd32 100644
--- a/source/blender/blenkernel/intern/mesh_boolean_convert.cc
+++ b/source/blender/blenkernel/intern/mesh_boolean_convert.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_convert.cc b/source/blender/blenkernel/intern/mesh_convert.cc
index 7d5f156040d2d87abafbbc07fcac07a4a9689344..7de2841dc9f31e000282c344ac4bcd67476b69d5 100644
--- a/source/blender/blenkernel/intern/mesh_convert.cc
+++ b/source/blender/blenkernel/intern/mesh_convert.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_debug.cc b/source/blender/blenkernel/intern/mesh_debug.cc
index 017f96c2eceefd23c4c1f3dc9daf7885daaa61c0..1d62c0251fbc64f3a531da255c7ce803dc129490 100644
--- a/source/blender/blenkernel/intern/mesh_debug.cc
+++ b/source/blender/blenkernel/intern/mesh_debug.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_evaluate.cc b/source/blender/blenkernel/intern/mesh_evaluate.cc
index 5cc1b4e4860e69c8fe94fd41aded90cff0291d74..da0bd1f021de51654d2c9b15d7956ba5a37f0879 100644
--- a/source/blender/blenkernel/intern/mesh_evaluate.cc
+++ b/source/blender/blenkernel/intern/mesh_evaluate.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_fair.cc b/source/blender/blenkernel/intern/mesh_fair.cc
index d0a57310fcf0b7a7d7db9f12362d44bfce3aedc5..8936d7b0ba6301d65c38780cfd68da815023f33c 100644
--- a/source/blender/blenkernel/intern/mesh_fair.cc
+++ b/source/blender/blenkernel/intern/mesh_fair.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_iterators.c b/source/blender/blenkernel/intern/mesh_iterators.c
index 4fb03c7b329cc9a9b89de46a68e0cbaa26caf608..e164ad9721b5a07f3f9506f5b2283666830a98c6 100644
--- a/source/blender/blenkernel/intern/mesh_iterators.c
+++ b/source/blender/blenkernel/intern/mesh_iterators.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_mapping.c b/source/blender/blenkernel/intern/mesh_mapping.c
index 415cce95d38e37d8da27a3e8ba8d98e55f57eb4c..e9c26c801414f6d7e0a2d569163596056ba2db8c 100644
--- a/source/blender/blenkernel/intern/mesh_mapping.c
+++ b/source/blender/blenkernel/intern/mesh_mapping.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_merge.c b/source/blender/blenkernel/intern/mesh_merge.c
index 3c01d5a4a50b14dc20dedbea159ac8ae6dcc4c82..4459e2514bc986e8ce40560efa29d9f2dffafcb3 100644
--- a/source/blender/blenkernel/intern/mesh_merge.c
+++ b/source/blender/blenkernel/intern/mesh_merge.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_mirror.c b/source/blender/blenkernel/intern/mesh_mirror.c
index ec3655ac4915fc47ce4bcebb9af546ed8346e005..da23aea43f373f7c013ff29d5620576352c2a1c8 100644
--- a/source/blender/blenkernel/intern/mesh_mirror.c
+++ b/source/blender/blenkernel/intern/mesh_mirror.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_normals.cc b/source/blender/blenkernel/intern/mesh_normals.cc
index 1b3c7e01be8f91c0c5d53d150b8314ef9aa49adf..3d801b301f9d4f49ad871d825e5d58f5ef163d21 100644
--- a/source/blender/blenkernel/intern/mesh_normals.cc
+++ b/source/blender/blenkernel/intern/mesh_normals.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_remap.c b/source/blender/blenkernel/intern/mesh_remap.c
index a9f61e9827bc879fe1e0c481b0bbd6bf65918b9b..406372f0113d123374589229f287080bf9f47727 100644
--- a/source/blender/blenkernel/intern/mesh_remap.c
+++ b/source/blender/blenkernel/intern/mesh_remap.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_remesh_voxel.cc b/source/blender/blenkernel/intern/mesh_remesh_voxel.cc
index 50464da86e97a36ce0c89bf3ab11d5f89f744c0d..5067d67a6c82aee2f0856920aceced96779c9584 100644
--- a/source/blender/blenkernel/intern/mesh_remesh_voxel.cc
+++ b/source/blender/blenkernel/intern/mesh_remesh_voxel.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_runtime.c b/source/blender/blenkernel/intern/mesh_runtime.c
index e7e5064df7c713b44dc6fd2179f408d57151636f..204441d53268065c1644b0a0e85ed2bb876ca3d1 100644
--- a/source/blender/blenkernel/intern/mesh_runtime.c
+++ b/source/blender/blenkernel/intern/mesh_runtime.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_sample.cc b/source/blender/blenkernel/intern/mesh_sample.cc
index a046cc68bf2588f19177442a928a2791edb4e55c..33b051c792cb1376e2044f0b656458bad4ff7f9a 100644
--- a/source/blender/blenkernel/intern/mesh_sample.cc
+++ b/source/blender/blenkernel/intern/mesh_sample.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_attribute_access.hh"
 #include "BKE_attribute_math.hh"
diff --git a/source/blender/blenkernel/intern/mesh_tangent.c b/source/blender/blenkernel/intern/mesh_tangent.c
index 73cef6b925bb21c472b5c69321ac37ab629119ad..42412342ffde00d6fee93276fb03d02eec3a4d13 100644
--- a/source/blender/blenkernel/intern/mesh_tangent.c
+++ b/source/blender/blenkernel/intern/mesh_tangent.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_tessellate.c b/source/blender/blenkernel/intern/mesh_tessellate.c
index 241aefc418c5b643c0d4ca3854bff18902de1c2b..96b588779f8f228d78bdc6524c6a631472e5a293 100644
--- a/source/blender/blenkernel/intern/mesh_tessellate.c
+++ b/source/blender/blenkernel/intern/mesh_tessellate.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_validate.c b/source/blender/blenkernel/intern/mesh_validate.c
index a5ba2767301e964f3fde362bbe551cd16fed2d74..53e19e6d16d31d7901ec32ef44ed39f923f22ef6 100644
--- a/source/blender/blenkernel/intern/mesh_validate.c
+++ b/source/blender/blenkernel/intern/mesh_validate.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_validate.cc b/source/blender/blenkernel/intern/mesh_validate.cc
index c8fae3cf88073760c15e0ab8d58745cc7438cb53..5c941c161373085819bf2dc4a0f3fdf94c085fa8 100644
--- a/source/blender/blenkernel/intern/mesh_validate.cc
+++ b/source/blender/blenkernel/intern/mesh_validate.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/mesh_wrapper.c b/source/blender/blenkernel/intern/mesh_wrapper.c
index d1f15cf9007be1016fc3b01198a80ae68c74b611..de0097e9a9a9e4e6a0678eef6fd28e6c972e4c66 100644
--- a/source/blender/blenkernel/intern/mesh_wrapper.c
+++ b/source/blender/blenkernel/intern/mesh_wrapper.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/modifier.c b/source/blender/blenkernel/intern/modifier.c
index 4cedaff7c00f0f86938ff82dcb30b58799f56fca..16bb50b7ad12d3d2c2b3c5f35c15959919490eef 100644
--- a/source/blender/blenkernel/intern/modifier.c
+++ b/source/blender/blenkernel/intern/modifier.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/movieclip.c b/source/blender/blenkernel/intern/movieclip.c
index 88da789cdc43264991abd6b642a578e53e7af0a2..a53714c8a98232530cf3a2132b99a103870d4a7e 100644
--- a/source/blender/blenkernel/intern/movieclip.c
+++ b/source/blender/blenkernel/intern/movieclip.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires.c b/source/blender/blenkernel/intern/multires.c
index fbad7d98630234c71d4b2217f6740dc1e3cf0e47..b0e235662cb2ad896823fd6a3989f261ea909328 100644
--- a/source/blender/blenkernel/intern/multires.c
+++ b/source/blender/blenkernel/intern/multires.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 by Nicholas Bishop. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires_inline.h b/source/blender/blenkernel/intern/multires_inline.h
index f88b5dd31437c8d7d3e1ff05ffc16a43e61ad355..e2c0483da7bc91b6872ee3b7014f3de3c8b967fb 100644
--- a/source/blender/blenkernel/intern/multires_inline.h
+++ b/source/blender/blenkernel/intern/multires_inline.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires_reshape.c b/source/blender/blenkernel/intern/multires_reshape.c
index e0bb3cf792cd37168024f3d8647cf9cf53a6ec8d..b50a0787fe364716311c409b2bef5e478ea9f758 100644
--- a/source/blender/blenkernel/intern/multires_reshape.c
+++ b/source/blender/blenkernel/intern/multires_reshape.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires_reshape.h b/source/blender/blenkernel/intern/multires_reshape.h
index a038ce5f108415529dba196e0462da5a426ea67d..c4f320b86d8a1d00e50cb5532c3b1167847db653 100644
--- a/source/blender/blenkernel/intern/multires_reshape.h
+++ b/source/blender/blenkernel/intern/multires_reshape.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires_reshape_apply_base.c b/source/blender/blenkernel/intern/multires_reshape_apply_base.c
index b693b1114baeeef405ce10d7057e3bead2227e24..65ba7b64d832d3ec8629d412a940bcec0f418cce 100644
--- a/source/blender/blenkernel/intern/multires_reshape_apply_base.c
+++ b/source/blender/blenkernel/intern/multires_reshape_apply_base.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires_reshape_ccg.c b/source/blender/blenkernel/intern/multires_reshape_ccg.c
index 804a845316fa86bfe95de4d71e80f172a49d55bd..6001aa715d5566e5ffca2df82390ef16dd9f46a2 100644
--- a/source/blender/blenkernel/intern/multires_reshape_ccg.c
+++ b/source/blender/blenkernel/intern/multires_reshape_ccg.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires_reshape_smooth.c b/source/blender/blenkernel/intern/multires_reshape_smooth.c
index 9ecd0901689f7768f5ebd3284843a97d3b7ddcbe..b76e2b3aec6b53fcbf724cb4805a5cf2cfffd8f8 100644
--- a/source/blender/blenkernel/intern/multires_reshape_smooth.c
+++ b/source/blender/blenkernel/intern/multires_reshape_smooth.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires_reshape_subdivide.c b/source/blender/blenkernel/intern/multires_reshape_subdivide.c
index d42a061084f616e1905f88e99b7855fdaedaf455..9fa3e93a1e6b7c40a0d9385fa8051ca38ae3bfce 100644
--- a/source/blender/blenkernel/intern/multires_reshape_subdivide.c
+++ b/source/blender/blenkernel/intern/multires_reshape_subdivide.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires_reshape_util.c b/source/blender/blenkernel/intern/multires_reshape_util.c
index 810cf328531d2bd65aaf8bbf839c65d35be0b55d..aed13adf56dedbcc0a63c300921d5f00a42a6556 100644
--- a/source/blender/blenkernel/intern/multires_reshape_util.c
+++ b/source/blender/blenkernel/intern/multires_reshape_util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires_reshape_vertcos.c b/source/blender/blenkernel/intern/multires_reshape_vertcos.c
index c009349ff1bcf572b31c5a3b58fe899103f7dfac..e50f5e71bf7204ac958e0b84dfd23b2261671fc4 100644
--- a/source/blender/blenkernel/intern/multires_reshape_vertcos.c
+++ b/source/blender/blenkernel/intern/multires_reshape_vertcos.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires_subdiv.c b/source/blender/blenkernel/intern/multires_subdiv.c
index 8156814d9f1a28a0ff20f98010fd97bf01d4ddac..cb133e93f689b5e5f459f6cd8022c7aa4af080f8 100644
--- a/source/blender/blenkernel/intern/multires_subdiv.c
+++ b/source/blender/blenkernel/intern/multires_subdiv.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires_unsubdivide.c b/source/blender/blenkernel/intern/multires_unsubdivide.c
index 643e1a50fd50ec188bb7b61aefc7c31bbca012df..80926bfc1e2b7e6a43d53a077d90e46a3da830ee 100644
--- a/source/blender/blenkernel/intern/multires_unsubdivide.c
+++ b/source/blender/blenkernel/intern/multires_unsubdivide.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires_unsubdivide.h b/source/blender/blenkernel/intern/multires_unsubdivide.h
index 0a03387282f6e3f68c9542e1abb1f1bd58128438..09df77206947002794739b08a025b19f2615fb2b 100644
--- a/source/blender/blenkernel/intern/multires_unsubdivide.h
+++ b/source/blender/blenkernel/intern/multires_unsubdivide.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/multires_versioning.c b/source/blender/blenkernel/intern/multires_versioning.c
index 18708c43f26e37b38018f30b0cb77ca9ef3f8e9f..b7888b9e33aebab103fb340746941682e6de92ab 100644
--- a/source/blender/blenkernel/intern/multires_versioning.c
+++ b/source/blender/blenkernel/intern/multires_versioning.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/nla.c b/source/blender/blenkernel/intern/nla.c
index 84484a63291ce7472616a7f0802164353d6af3b6..31dea7fb46fcc76cf53eaa3df9103ea20cbdeb27 100644
--- a/source/blender/blenkernel/intern/nla.c
+++ b/source/blender/blenkernel/intern/nla.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/node.cc b/source/blender/blenkernel/intern/node.cc
index a1c10a733cedaabfef636edf6c0377ae0c1d48d1..c8e82302787cdb27c33485577266b94ba4d80eab 100644
--- a/source/blender/blenkernel/intern/node.cc
+++ b/source/blender/blenkernel/intern/node.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/node_tree_update.cc b/source/blender/blenkernel/intern/node_tree_update.cc
index bea73ec806546f24975e142f394115d741da3042..e14f9f796602e2563ae2100718c671f167caef20 100644
--- a/source/blender/blenkernel/intern/node_tree_update.cc
+++ b/source/blender/blenkernel/intern/node_tree_update.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_map.hh"
 #include "BLI_multi_value_map.hh"
diff --git a/source/blender/blenkernel/intern/object.cc b/source/blender/blenkernel/intern/object.cc
index 8faae6efb268514e74bde7f9f474d9fdecfba39d..579e61750f045a85c5dd52a6b25bf0eae2e8c8c7 100644
--- a/source/blender/blenkernel/intern/object.cc
+++ b/source/blender/blenkernel/intern/object.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/object_deform.c b/source/blender/blenkernel/intern/object_deform.c
index fb4f4a142656176169ad7f72147872a23d40c3b4..310ec7678bd1866e3d20792ce6ce2fa7e77c4711 100644
--- a/source/blender/blenkernel/intern/object_deform.c
+++ b/source/blender/blenkernel/intern/object_deform.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/object_dupli.cc b/source/blender/blenkernel/intern/object_dupli.cc
index 3082d6f25f30aa740955f89136d84d8b4ca9241a..18dd61004f5ad8b19db6b5b569e12d54df354f55 100644
--- a/source/blender/blenkernel/intern/object_dupli.cc
+++ b/source/blender/blenkernel/intern/object_dupli.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/object_facemap.c b/source/blender/blenkernel/intern/object_facemap.c
index c44ec2b510ee7cf4c2a27797376f1a85582fd436..42c57c706a4c370288ae6f6c627599fe055c835d 100644
--- a/source/blender/blenkernel/intern/object_facemap.c
+++ b/source/blender/blenkernel/intern/object_facemap.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/object_update.c b/source/blender/blenkernel/intern/object_update.c
index 6352fd1923972b1038ab3fb240c14a30dd654fcf..2b0e04d0bd06626be9228b3906f36c7f68421efd 100644
--- a/source/blender/blenkernel/intern/object_update.c
+++ b/source/blender/blenkernel/intern/object_update.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/ocean.c b/source/blender/blenkernel/intern/ocean.c
index dacc24c32da2cd80adf039c22dbc31770c70af13..70a11dce92d6c5f76aaee826f8702877c2f056c7 100644
--- a/source/blender/blenkernel/intern/ocean.c
+++ b/source/blender/blenkernel/intern/ocean.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/ocean_intern.h b/source/blender/blenkernel/intern/ocean_intern.h
index df9dcd7e2f5ef8ece15c92b2cda4d69aeaff0906..9fc9e6fe00d914b55af745b1f3338fdab291d968 100644
--- a/source/blender/blenkernel/intern/ocean_intern.h
+++ b/source/blender/blenkernel/intern/ocean_intern.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/intern/ocean_spectrum.c b/source/blender/blenkernel/intern/ocean_spectrum.c
index 43e0f39921374c9134359d98bbf47df4fc8e5ac4..c11f8ef0ee757d51c41306c84eb04bb7387bf7a7 100644
--- a/source/blender/blenkernel/intern/ocean_spectrum.c
+++ b/source/blender/blenkernel/intern/ocean_spectrum.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/outliner_treehash.c b/source/blender/blenkernel/intern/outliner_treehash.c
index b9497d389e7fd615f14beeed73dda615110d63e0..03c327bec2f075a9777180c7a8ff4ad266ead007 100644
--- a/source/blender/blenkernel/intern/outliner_treehash.c
+++ b/source/blender/blenkernel/intern/outliner_treehash.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/packedFile.c b/source/blender/blenkernel/intern/packedFile.c
index 3ddcdb424f94c868757170d64d2e12fec0479b66..62794e3d0ec48c17d0f1d494c42216f1e1135527 100644
--- a/source/blender/blenkernel/intern/packedFile.c
+++ b/source/blender/blenkernel/intern/packedFile.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/paint.c b/source/blender/blenkernel/intern/paint.c
index 72210eea71d2da53ae43a3d5849c099347758920..dae6c5a319fa7e780323b0181e6abee277dae716 100644
--- a/source/blender/blenkernel/intern/paint.c
+++ b/source/blender/blenkernel/intern/paint.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 by Nicholas Bishop. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/paint_toolslots.c b/source/blender/blenkernel/intern/paint_toolslots.c
index bdb7b483997a72bbfb85e0a9e2a8a3b0be204d88..04b70aae199a0306b3d70c170547a6421d649f69 100644
--- a/source/blender/blenkernel/intern/paint_toolslots.c
+++ b/source/blender/blenkernel/intern/paint_toolslots.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/particle.c b/source/blender/blenkernel/intern/particle.c
index aa08a6494d1db6bd2d38f1b0bf58e0266d683dc6..56d640b8ac055e3a166a03399cf6f0f0257b4155 100644
--- a/source/blender/blenkernel/intern/particle.c
+++ b/source/blender/blenkernel/intern/particle.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 by Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/particle_child.c b/source/blender/blenkernel/intern/particle_child.c
index 415147fb36ac10b946f876f37af47e1803da76ec..7a2e4eb4ac95d1644f09adb28948a986c99ea7b6 100644
--- a/source/blender/blenkernel/intern/particle_child.c
+++ b/source/blender/blenkernel/intern/particle_child.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/particle_distribute.c b/source/blender/blenkernel/intern/particle_distribute.c
index ba3f99a2800a80380610414ec620567a2e7f07e2..aa2091025229007d1fb7b5c7799b1e8edaa1c7be 100644
--- a/source/blender/blenkernel/intern/particle_distribute.c
+++ b/source/blender/blenkernel/intern/particle_distribute.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 by Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/particle_system.c b/source/blender/blenkernel/intern/particle_system.c
index 6953ecf38c3cb2c0a32830f03c138cb99e2b335b..3a1aefec2d3f1cbaa01869a9d7b7f9edbb78d6cb 100644
--- a/source/blender/blenkernel/intern/particle_system.c
+++ b/source/blender/blenkernel/intern/particle_system.c
@@ -1,21 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2007 Janne Karhu. All rights reserved.
- *           2011-2012 AutoCRC (adaptive time step, Classical SPH).
- */
+ *           2011-2012 AutoCRC (adaptive time step, Classical SPH). */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/pbvh.c b/source/blender/blenkernel/intern/pbvh.c
index c925942d8102c687166bbf6ee9354f09d531c5f3..3ed3c7badc3d79cbcbd92f37db4a9f9ccee2f862 100644
--- a/source/blender/blenkernel/intern/pbvh.c
+++ b/source/blender/blenkernel/intern/pbvh.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/pbvh_bmesh.c b/source/blender/blenkernel/intern/pbvh_bmesh.c
index 6f57448b0ab4669a8eea8e7a333ee99484bb2887..6a135c248ce7233639ce7b7ac217a945ca5db271 100644
--- a/source/blender/blenkernel/intern/pbvh_bmesh.c
+++ b/source/blender/blenkernel/intern/pbvh_bmesh.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/pbvh_intern.h b/source/blender/blenkernel/intern/pbvh_intern.h
index 53379d8a032064a5ca57733c67ee2dcf5215aeea..123a6b1b8297efe6b2ca06a5d22b90324e79efda 100644
--- a/source/blender/blenkernel/intern/pbvh_intern.h
+++ b/source/blender/blenkernel/intern/pbvh_intern.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/intern/pointcache.c b/source/blender/blenkernel/intern/pointcache.c
index 602546db8dfb6a0ce147081d05d62572d1abe375..859e3499cc4d0c21a5b20558ca2749356e94572a 100644
--- a/source/blender/blenkernel/intern/pointcache.c
+++ b/source/blender/blenkernel/intern/pointcache.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/pointcloud.cc b/source/blender/blenkernel/intern/pointcloud.cc
index b5f016e4d762cfafc9360dfdc4341c3909347e12..2a4e071529385f149478ce376051155b80e7cf10 100644
--- a/source/blender/blenkernel/intern/pointcloud.cc
+++ b/source/blender/blenkernel/intern/pointcloud.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/preferences.c b/source/blender/blenkernel/intern/preferences.c
index 4bb2231bbb195e2d4dcfd3ee04bb0c4493b9f8bb..b2e795901fb9a876e73abd472f91a41edf32d376 100644
--- a/source/blender/blenkernel/intern/preferences.c
+++ b/source/blender/blenkernel/intern/preferences.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/report.c b/source/blender/blenkernel/intern/report.c
index bc11861f2c8b973752cc6016b433ee8e0143967e..98b680c8054c6bf559a7ec9362e72997924b8502 100644
--- a/source/blender/blenkernel/intern/report.c
+++ b/source/blender/blenkernel/intern/report.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/rigidbody.c b/source/blender/blenkernel/intern/rigidbody.c
index 75e9bc2fbee4419c2743bcbe85d303bd0d7d24d1..c21b525f628fe4036fb604e8cf1edad563ea4234 100644
--- a/source/blender/blenkernel/intern/rigidbody.c
+++ b/source/blender/blenkernel/intern/rigidbody.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/scene.c b/source/blender/blenkernel/intern/scene.c
index ed9f10aaa91c8535d4606211d3a923632707b189..6d567bd050e07844fb5ce0f9a287e3fba3221a38 100644
--- a/source/blender/blenkernel/intern/scene.c
+++ b/source/blender/blenkernel/intern/scene.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/screen.c b/source/blender/blenkernel/intern/screen.c
index 6e352b6ba904ad05d3060014728d3b99cee75721..b1b9a24ebaa3127c48ad762cd25bc597964035ef 100644
--- a/source/blender/blenkernel/intern/screen.c
+++ b/source/blender/blenkernel/intern/screen.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/shader_fx.c b/source/blender/blenkernel/intern/shader_fx.c
index a0d67a78d0f5db578a079c47337b9637d77469d8..51ebd232978a607e84f292efecd021ac921e2fb7 100644
--- a/source/blender/blenkernel/intern/shader_fx.c
+++ b/source/blender/blenkernel/intern/shader_fx.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/shrinkwrap.c b/source/blender/blenkernel/intern/shrinkwrap.c
index d51ed2832f097c52d6e87539db0c4f3d65b30183..7c7aa80402d2971d476466dec50108e9b70437b1 100644
--- a/source/blender/blenkernel/intern/shrinkwrap.c
+++ b/source/blender/blenkernel/intern/shrinkwrap.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/simulation.cc b/source/blender/blenkernel/intern/simulation.cc
index ec4b0e8d51d2127e49b890216f98195886c968e9..260d67de4d89dfd6b9d66c2e6ab27975498db90c 100644
--- a/source/blender/blenkernel/intern/simulation.cc
+++ b/source/blender/blenkernel/intern/simulation.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/softbody.c b/source/blender/blenkernel/intern/softbody.c
index baabf57f0c311419be54a22d4e61b0de77e099b1..7b8e5a1409a6521cda903f156d47734b897cb1cb 100644
--- a/source/blender/blenkernel/intern/softbody.c
+++ b/source/blender/blenkernel/intern/softbody.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/sound.c b/source/blender/blenkernel/intern/sound.c
index b27231e6a17cb239f2acca61182edfdb99b3fd57..fd9735ff07fa3d65422bd5e153cd398fdcadfc31 100644
--- a/source/blender/blenkernel/intern/sound.c
+++ b/source/blender/blenkernel/intern/sound.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/speaker.c b/source/blender/blenkernel/intern/speaker.c
index b7199dc1e20a5c32a505d9818d73d66c394c0647..a8b76954a6f832489a0be6daa4e84ee8b44d9018 100644
--- a/source/blender/blenkernel/intern/speaker.c
+++ b/source/blender/blenkernel/intern/speaker.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/spline_base.cc b/source/blender/blenkernel/intern/spline_base.cc
index 3262d768b6c579ef9bf2ee4183f521dcf9409bdd..d1c4756a3b99c7191829f20da34d13729b5460ab 100644
--- a/source/blender/blenkernel/intern/spline_base.cc
+++ b/source/blender/blenkernel/intern/spline_base.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 #include "BLI_span.hh"
diff --git a/source/blender/blenkernel/intern/spline_bezier.cc b/source/blender/blenkernel/intern/spline_bezier.cc
index 980437014b1e38a29bea7470aa6c82ceaabe4444..57f1d73d55eacc116d40afe3cd1eadc9b190587b 100644
--- a/source/blender/blenkernel/intern/spline_bezier.cc
+++ b/source/blender/blenkernel/intern/spline_bezier.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 #include "BLI_span.hh"
diff --git a/source/blender/blenkernel/intern/spline_nurbs.cc b/source/blender/blenkernel/intern/spline_nurbs.cc
index 5993b9a9a27678fec9da9cb0d454e06d56b5de6e..c2479e9e5957d2155c2f1afd899081b7724d0ba1 100644
--- a/source/blender/blenkernel/intern/spline_nurbs.cc
+++ b/source/blender/blenkernel/intern/spline_nurbs.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 #include "BLI_span.hh"
diff --git a/source/blender/blenkernel/intern/spline_poly.cc b/source/blender/blenkernel/intern/spline_poly.cc
index 480bbd1dfe86453e26bf631b03a96f725070ccb6..a5d3fd47ede7dbeb89796f746e700f0a92f202e8 100644
--- a/source/blender/blenkernel/intern/spline_poly.cc
+++ b/source/blender/blenkernel/intern/spline_poly.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_span.hh"
 #include "BLI_virtual_array.hh"
diff --git a/source/blender/blenkernel/intern/studiolight.c b/source/blender/blenkernel/intern/studiolight.c
index b7690e69aa1a98a1c61c9db0eb1985679f29a3d7..811b6bfe1827e7b630a35fc3da92a157812c1070 100644
--- a/source/blender/blenkernel/intern/studiolight.c
+++ b/source/blender/blenkernel/intern/studiolight.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006-2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006-2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv.c b/source/blender/blenkernel/intern/subdiv.c
index 45810e29565d419a86532e049e4f741712d0316a..7b1ebd5df1f1dff2fa8940aa4f2f3fc2029fa366 100644
--- a/source/blender/blenkernel/intern/subdiv.c
+++ b/source/blender/blenkernel/intern/subdiv.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_ccg.c b/source/blender/blenkernel/intern/subdiv_ccg.c
index 7d876acf77667ac0b0c761ead43ee27454dcbd8a..c956ef09af3925f1570f05764f7fb5c664ccb24d 100644
--- a/source/blender/blenkernel/intern/subdiv_ccg.c
+++ b/source/blender/blenkernel/intern/subdiv_ccg.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_ccg_mask.c b/source/blender/blenkernel/intern/subdiv_ccg_mask.c
index 10cd7039948dfa0a6b8c2886283af51341075491..83f76f85a678305fdcf9b69dfcd039e85953a1cb 100644
--- a/source/blender/blenkernel/intern/subdiv_ccg_mask.c
+++ b/source/blender/blenkernel/intern/subdiv_ccg_mask.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_ccg_material.c b/source/blender/blenkernel/intern/subdiv_ccg_material.c
index 9a81eb1198943d3a05626dad8e1693030105152c..9fbc99cb4f1041b8a6d33a20182fff253a7ec4a8 100644
--- a/source/blender/blenkernel/intern/subdiv_ccg_material.c
+++ b/source/blender/blenkernel/intern/subdiv_ccg_material.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_converter.c b/source/blender/blenkernel/intern/subdiv_converter.c
index 39b701da262357faa7d793665600e2f0ab0076cb..1d92d845b36ca8eaf40684e2dd1de64b12f934e6 100644
--- a/source/blender/blenkernel/intern/subdiv_converter.c
+++ b/source/blender/blenkernel/intern/subdiv_converter.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_converter.h b/source/blender/blenkernel/intern/subdiv_converter.h
index ea0efe994b5125da0a2b6ec4a716606c2414a0aa..88be0306461c17ab3b726f99b245aaaa76ffe40e 100644
--- a/source/blender/blenkernel/intern/subdiv_converter.h
+++ b/source/blender/blenkernel/intern/subdiv_converter.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenkernel/intern/subdiv_converter_mesh.c b/source/blender/blenkernel/intern/subdiv_converter_mesh.c
index fc7ef88787903452a5c536b5e5140d318c7ad85a..1c5078df1f3c10ad94891745cd0320c61165515c 100644
--- a/source/blender/blenkernel/intern/subdiv_converter_mesh.c
+++ b/source/blender/blenkernel/intern/subdiv_converter_mesh.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_deform.c b/source/blender/blenkernel/intern/subdiv_deform.c
index c385b1b291dec596404c22d11f58013292836efa..4924125bc4da96310bd264fb96d683eec601592e 100644
--- a/source/blender/blenkernel/intern/subdiv_deform.c
+++ b/source/blender/blenkernel/intern/subdiv_deform.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_displacement.c b/source/blender/blenkernel/intern/subdiv_displacement.c
index 7e1acde9450115e34b9c9de4292704862f76da8c..693c64a18a451daef0482cf9eb5723e65c5b17d7 100644
--- a/source/blender/blenkernel/intern/subdiv_displacement.c
+++ b/source/blender/blenkernel/intern/subdiv_displacement.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_displacement_multires.c b/source/blender/blenkernel/intern/subdiv_displacement_multires.c
index 0fb08880dd55614b7c3e327e41aa79fb95b9a00c..0decb57bb38bbee97639c0bffba142ed3e808485 100644
--- a/source/blender/blenkernel/intern/subdiv_displacement_multires.c
+++ b/source/blender/blenkernel/intern/subdiv_displacement_multires.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_eval.c b/source/blender/blenkernel/intern/subdiv_eval.c
index c2f7581637be90ab58cb169798278849d0afe8c9..9edd9815400a32da805331c23ea178dbc61de2c5 100644
--- a/source/blender/blenkernel/intern/subdiv_eval.c
+++ b/source/blender/blenkernel/intern/subdiv_eval.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_foreach.c b/source/blender/blenkernel/intern/subdiv_foreach.c
index b510a9b3bba3999341d1502797757455bb6f39a9..80364561d010a31bdb72477f8b2c04febefe1fb6 100644
--- a/source/blender/blenkernel/intern/subdiv_foreach.c
+++ b/source/blender/blenkernel/intern/subdiv_foreach.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_inline.h b/source/blender/blenkernel/intern/subdiv_inline.h
index d52adff1e61af689f01f91fd8639cf16353c23b6..c02b4c557c1fef3499b295e0d50871a84be633fd 100644
--- a/source/blender/blenkernel/intern/subdiv_inline.h
+++ b/source/blender/blenkernel/intern/subdiv_inline.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_mesh.c b/source/blender/blenkernel/intern/subdiv_mesh.c
index 09af77d5f0975cd673532685e0dbcca94acb4c9a..fd56582f5e3ddb47d268dea6c6e78173a68a0e9a 100644
--- a/source/blender/blenkernel/intern/subdiv_mesh.c
+++ b/source/blender/blenkernel/intern/subdiv_mesh.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_modifier.c b/source/blender/blenkernel/intern/subdiv_modifier.c
index 525c4837bc4ee58628b60954fc405d36e11b75ed..dd35388f23088d8250820d53a237b1fb04e28023 100644
--- a/source/blender/blenkernel/intern/subdiv_modifier.c
+++ b/source/blender/blenkernel/intern/subdiv_modifier.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 #include "BKE_subdiv_modifier.h"
 
diff --git a/source/blender/blenkernel/intern/subdiv_stats.c b/source/blender/blenkernel/intern/subdiv_stats.c
index 56d08a591ec59a623dda3c4c7cccb063ca256469..213ee902643a92ada75542072e5a597aa269da8c 100644
--- a/source/blender/blenkernel/intern/subdiv_stats.c
+++ b/source/blender/blenkernel/intern/subdiv_stats.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subdiv_topology.c b/source/blender/blenkernel/intern/subdiv_topology.c
index 455fa2cf28f2096e5ea083a20f0eba811a02106f..8dcd4b3517c943c0092d1378f95cfd458b8df9dd 100644
--- a/source/blender/blenkernel/intern/subdiv_topology.c
+++ b/source/blender/blenkernel/intern/subdiv_topology.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/subsurf_ccg.c b/source/blender/blenkernel/intern/subsurf_ccg.c
index 2f63edebb673950958b8062fc21362c13a2e8613..61ed4233474cc891663f3ce4c1aaba5e63d13e1d 100644
--- a/source/blender/blenkernel/intern/subsurf_ccg.c
+++ b/source/blender/blenkernel/intern/subsurf_ccg.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/text.c b/source/blender/blenkernel/intern/text.c
index 4406647bd2c3492d3308236ca2b69a7b85a94044..5d0e515040d4919ac705e4727a3a82169cc5647f 100644
--- a/source/blender/blenkernel/intern/text.c
+++ b/source/blender/blenkernel/intern/text.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/text_suggestions.c b/source/blender/blenkernel/intern/text_suggestions.c
index e93e969cb33992ef51cfcaba70d196ca67d0d569..35b6c31159b0f680d3ac47d2db9ecc174a8d776a 100644
--- a/source/blender/blenkernel/intern/text_suggestions.c
+++ b/source/blender/blenkernel/intern/text_suggestions.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/texture.c b/source/blender/blenkernel/intern/texture.c
index c37e2fb6144779774c681cfb4f14532b6c4d81b4..d9e5887a9a851cb961fe0b2ccaf0d8dfe4a65327 100644
--- a/source/blender/blenkernel/intern/texture.c
+++ b/source/blender/blenkernel/intern/texture.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/tracking.c b/source/blender/blenkernel/intern/tracking.c
index 3878d3b1c988b85523dc9023dc3b1990e24a769a..5708d3eeaec418c0af190ac441579868e8c98b5d 100644
--- a/source/blender/blenkernel/intern/tracking.c
+++ b/source/blender/blenkernel/intern/tracking.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/tracking_auto.c b/source/blender/blenkernel/intern/tracking_auto.c
index c83e595c611dca6812301dd9ca6aae6e6b2a1303..21a56c44c9b7574a94bbd51bd59b910c8c9e972b 100644
--- a/source/blender/blenkernel/intern/tracking_auto.c
+++ b/source/blender/blenkernel/intern/tracking_auto.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/tracking_detect.c b/source/blender/blenkernel/intern/tracking_detect.c
index be680ef8a8b63bb66d70e41e865131a1e8c2eb1f..51ffce4a3e36a967ffd1e2c366097fb51f1d7a8e 100644
--- a/source/blender/blenkernel/intern/tracking_detect.c
+++ b/source/blender/blenkernel/intern/tracking_detect.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/tracking_plane_tracker.c b/source/blender/blenkernel/intern/tracking_plane_tracker.c
index d4a5bb2aa9d74e84e953cd758cd648e4abed52ce..5e60f6f59a91c80319b16a5615bbb918e69475d7 100644
--- a/source/blender/blenkernel/intern/tracking_plane_tracker.c
+++ b/source/blender/blenkernel/intern/tracking_plane_tracker.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/tracking_region_tracker.c b/source/blender/blenkernel/intern/tracking_region_tracker.c
index 4b23f74bc8fd7ea407f22028bfe2c29cee096d5d..c89d44c4bf09b34c020db01e5b8004415c718bb3 100644
--- a/source/blender/blenkernel/intern/tracking_region_tracker.c
+++ b/source/blender/blenkernel/intern/tracking_region_tracker.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/tracking_solver.c b/source/blender/blenkernel/intern/tracking_solver.c
index 47a955c9d93b2de18497be9a0e67fb65c46a456c..962daaa93cd6071c88af52b6a46c525a9bd7c156 100644
--- a/source/blender/blenkernel/intern/tracking_solver.c
+++ b/source/blender/blenkernel/intern/tracking_solver.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/tracking_stabilize.c b/source/blender/blenkernel/intern/tracking_stabilize.c
index fe9a2f2268a99af3f2259ad5294b0a125455d943..851e55c2304f1f17cf8f344b264ef774eb0b9c71 100644
--- a/source/blender/blenkernel/intern/tracking_stabilize.c
+++ b/source/blender/blenkernel/intern/tracking_stabilize.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/tracking_test.cc b/source/blender/blenkernel/intern/tracking_test.cc
index d85d71b7c86625e06c6ba32a6fc1cc1efd6972b3..7c93e4b5406a9ed2ee4eebc0bc16fc2166f12d87 100644
--- a/source/blender/blenkernel/intern/tracking_test.cc
+++ b/source/blender/blenkernel/intern/tracking_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenkernel/intern/tracking_util.c b/source/blender/blenkernel/intern/tracking_util.c
index f1fd3a13e0e89b8d42970106600d149fd4294a76..e97aa49f4cad3254787bbbdc237b14716ca1096d 100644
--- a/source/blender/blenkernel/intern/tracking_util.c
+++ b/source/blender/blenkernel/intern/tracking_util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/type_conversions.cc b/source/blender/blenkernel/intern/type_conversions.cc
index b2011d2baf7ec41c83e424f1b7bb14e9f2016cfa..4ab945d14c60bb2cbfbd1c2bcbdce15f1b94d84e 100644
--- a/source/blender/blenkernel/intern/type_conversions.cc
+++ b/source/blender/blenkernel/intern/type_conversions.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_type_conversions.hh"
 
diff --git a/source/blender/blenkernel/intern/undo_system.c b/source/blender/blenkernel/intern/undo_system.c
index 3e263fafe2882795bfba65e681f33cd669fa73c7..300ef0c646fb8603211868d34fac6259ca7d4f88 100644
--- a/source/blender/blenkernel/intern/undo_system.c
+++ b/source/blender/blenkernel/intern/undo_system.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/unit.c b/source/blender/blenkernel/intern/unit.c
index fde3ac13ceb1b275fe7a51f1af6d692e84a45ffb..02134623a311f4fe48ec3d59513d58a5d7a49880 100644
--- a/source/blender/blenkernel/intern/unit.c
+++ b/source/blender/blenkernel/intern/unit.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/vfont.c b/source/blender/blenkernel/intern/vfont.c
index 4a598288ee666554e47b349aca0d963d8dae20b0..cb5e351e78a1246d4ceffa39d8570d8a1d93a413 100644
--- a/source/blender/blenkernel/intern/vfont.c
+++ b/source/blender/blenkernel/intern/vfont.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/vfontdata_freetype.c b/source/blender/blenkernel/intern/vfontdata_freetype.c
index 60b7e4e5c8bae4d5dbd179cb2b2821743a3a7b7d..79d9b64b0f6248dcb7ad97065c38b8adb6284b4b 100644
--- a/source/blender/blenkernel/intern/vfontdata_freetype.c
+++ b/source/blender/blenkernel/intern/vfontdata_freetype.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is written by Rob Haarsma (phase)
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * The Original Code is written by Rob Haarsma (phase). All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/volume.cc b/source/blender/blenkernel/intern/volume.cc
index 39a7725bfa34c8f97f26fb2b6edd5768d042fc1b..ff3f20479f8c8f2f1f7c71612800cacd816ca6d2 100644
--- a/source/blender/blenkernel/intern/volume.cc
+++ b/source/blender/blenkernel/intern/volume.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/volume_render.cc b/source/blender/blenkernel/intern/volume_render.cc
index c0a205b56730f22b8def12f7751c3197af5ec4b3..ca18d6c3446bb7c1b18362a4a879fbe3580a9fb8 100644
--- a/source/blender/blenkernel/intern/volume_render.cc
+++ b/source/blender/blenkernel/intern/volume_render.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/volume_to_mesh.cc b/source/blender/blenkernel/intern/volume_to_mesh.cc
index 336ce724e35eee7666ca703953dbfa481620ba6d..8544d6c9c77fb8cb30da998c223f1024a8bb6bde 100644
--- a/source/blender/blenkernel/intern/volume_to_mesh.cc
+++ b/source/blender/blenkernel/intern/volume_to_mesh.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <vector>
 
diff --git a/source/blender/blenkernel/intern/workspace.c b/source/blender/blenkernel/intern/workspace.c
index e3fe1e04368a9b9b8a9102b4275fefeeef525305..ef0a3069815c3a04ec520cdbf1af05f24c961260 100644
--- a/source/blender/blenkernel/intern/workspace.c
+++ b/source/blender/blenkernel/intern/workspace.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/world.c b/source/blender/blenkernel/intern/world.c
index b2e90b7ba12a8f44fe38bbc6d78bd5bd6f076d03..ac8b18f339561e9ef69dcee7d27a3e64d9e32bd9 100644
--- a/source/blender/blenkernel/intern/world.c
+++ b/source/blender/blenkernel/intern/world.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/intern/writeavi.c b/source/blender/blenkernel/intern/writeavi.c
index 138c75acd7bd4d44ac1f3474c7454697982fe25e..f4de82824c1e8dbe517a6acc4269d01ac3aa956f 100644
--- a/source/blender/blenkernel/intern/writeavi.c
+++ b/source/blender/blenkernel/intern/writeavi.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * Functions for writing AVI-format files.
diff --git a/source/blender/blenkernel/intern/writeffmpeg.c b/source/blender/blenkernel/intern/writeffmpeg.c
index 9effeb831b67d3ee3a551f2cb17e053703513cf3..3ee75ca21ce35b38dc18c26c4f5ab1c0edf49b71 100644
--- a/source/blender/blenkernel/intern/writeffmpeg.c
+++ b/source/blender/blenkernel/intern/writeffmpeg.c
@@ -1,19 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- * Partial Copyright (c) 2006 Peter Schlaile
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Partial Copyright 2006 Peter Schlaile. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/nla_private.h b/source/blender/blenkernel/nla_private.h
index c338540b5f50a13dcfb16f88962b4336f256fcf9..47cef2a53ec37bec62995de2b995011d1d5ba119 100644
--- a/source/blender/blenkernel/nla_private.h
+++ b/source/blender/blenkernel/nla_private.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/particle_private.h b/source/blender/blenkernel/particle_private.h
index 1c183aab3b72020d0f3a546fcb514a5c6ecb033a..661db81096ed1d7d32c0718904f56e9bf85ccf48 100644
--- a/source/blender/blenkernel/particle_private.h
+++ b/source/blender/blenkernel/particle_private.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenkernel/tracking_private.h b/source/blender/blenkernel/tracking_private.h
index 0c1f73fa4b67645196fe96b8033ecc2784e5d36b..820f7df90fe8d9a2ee638b52aa327854c06cc717 100644
--- a/source/blender/blenkernel/tracking_private.h
+++ b/source/blender/blenkernel/tracking_private.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/blenlib/BLI_alloca.h b/source/blender/blenlib/BLI_alloca.h
index 9e3bd98537dbfb31b39f893ad29d1a3ef419da2b..6529fe534fdab7d53553ef96fc4bea269d36f684 100644
--- a/source/blender/blenlib/BLI_alloca.h
+++ b/source/blender/blenlib/BLI_alloca.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_allocator.hh b/source/blender/blenlib/BLI_allocator.hh
index 899c84998079c71ebcc1424157b1b1ac036bf2a6..f19292fffd83c558c3d4d887b4df3a3c470d4f7d 100644
--- a/source/blender/blenlib/BLI_allocator.hh
+++ b/source/blender/blenlib/BLI_allocator.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenlib/BLI_any.hh b/source/blender/blenlib/BLI_any.hh
index 7ffc323adf616174b3d53363452ea335af930711..4424ad29a21da9b1961c8dd35f795d2060b501aa 100644
--- a/source/blender/blenlib/BLI_any.hh
+++ b/source/blender/blenlib/BLI_any.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_args.h b/source/blender/blenlib/BLI_args.h
index 5d9c168a9bd202a136f8051e8f70d12e8752e6f7..8701fd80084afdcec01811db4b5ae0f2b11397c3 100644
--- a/source/blender/blenlib/BLI_args.h
+++ b/source/blender/blenlib/BLI_args.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_array.h b/source/blender/blenlib/BLI_array.h
index 85fa07d8563374e87d5a6f9414c75801ffc74339..d3bb3401d7e401ea4e0edc68fee250bf251e5dac 100644
--- a/source/blender/blenlib/BLI_array.h
+++ b/source/blender/blenlib/BLI_array.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_array.hh b/source/blender/blenlib/BLI_array.hh
index 8046449963477efadbc3b0296f8f044ceddc4d8e..a580f12851e8f654e4bcd766cb7bdd22cce499e1 100644
--- a/source/blender/blenlib/BLI_array.hh
+++ b/source/blender/blenlib/BLI_array.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_array_store.h b/source/blender/blenlib/BLI_array_store.h
index 68928f53e55610b62943d34c855f79121153abc8..8a91825da6fff2d0e9468a086fafc9397eb37adc 100644
--- a/source/blender/blenlib/BLI_array_store.h
+++ b/source/blender/blenlib/BLI_array_store.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_array_store_utils.h b/source/blender/blenlib/BLI_array_store_utils.h
index 01d7f8804ab841be6bd0e0a19fbab04eec6040df..6a0e583c62f9fb2548c9444aca44a9e3c78eaab0 100644
--- a/source/blender/blenlib/BLI_array_store_utils.h
+++ b/source/blender/blenlib/BLI_array_store_utils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_array_utils.h b/source/blender/blenlib/BLI_array_utils.h
index 202ae9a97869da2eaa4feecdbc8683194786ddfc..af44997be3b118c7ca2ca9c90071d705c0da7907 100644
--- a/source/blender/blenlib/BLI_array_utils.h
+++ b/source/blender/blenlib/BLI_array_utils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_asan.h b/source/blender/blenlib/BLI_asan.h
index c38ad6b39d090eae77ab73ceb159bb08408fbeb0..deeb00b8ce1056513f9641c8be4534aff2b10131 100644
--- a/source/blender/blenlib/BLI_asan.h
+++ b/source/blender/blenlib/BLI_asan.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_assert.h b/source/blender/blenlib/BLI_assert.h
index ad5e2b297664858d3e11d2c8cd5ec5d04728189c..9bb7f3bfa8be846222af0a414bf7e6f6937cc2cf 100644
--- a/source/blender/blenlib/BLI_assert.h
+++ b/source/blender/blenlib/BLI_assert.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_astar.h b/source/blender/blenlib/BLI_astar.h
index 26b45f1ebe6b046b3fc8b159599a3b1f67b458c7..e17cc7133519232fb76bd6921fc622a3b26e3467 100644
--- a/source/blender/blenlib/BLI_astar.h
+++ b/source/blender/blenlib/BLI_astar.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_bitmap.h b/source/blender/blenlib/BLI_bitmap.h
index b5ef08e9e604daf262db4781be48bf4e705459b3..38c44193ab302921554b556424aab4fda3989e27 100644
--- a/source/blender/blenlib/BLI_bitmap.h
+++ b/source/blender/blenlib/BLI_bitmap.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 by Nicholas Bishop. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_bitmap_draw_2d.h b/source/blender/blenlib/BLI_bitmap_draw_2d.h
index 3831ed3c9e7db09743dbf83760f0cdbdb27c6538..145b252c6d56ad23107481245fc22be8240c43eb 100644
--- a/source/blender/blenlib/BLI_bitmap_draw_2d.h
+++ b/source/blender/blenlib/BLI_bitmap_draw_2d.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_blenlib.h b/source/blender/blenlib/BLI_blenlib.h
index a9e8c55b6b451678fad570059842f1a6d732e421..2a78a990a2a3a5ec3bff2b48968b1bc7f4f58f0b 100644
--- a/source/blender/blenlib/BLI_blenlib.h
+++ b/source/blender/blenlib/BLI_blenlib.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/BLI_boxpack_2d.h b/source/blender/blenlib/BLI_boxpack_2d.h
index eee1a0d3d4130ecb00866f2dd2e74c02447a9cee..31669dfd42a43f9a0df2fa991274c521ddc770f4 100644
--- a/source/blender/blenlib/BLI_boxpack_2d.h
+++ b/source/blender/blenlib/BLI_boxpack_2d.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_buffer.h b/source/blender/blenlib/BLI_buffer.h
index e79d44fd934a8ed9eda4d6208ad56b424bbb3dfe..cba51fb724f44ddc25c13d34126220092daa83b0 100644
--- a/source/blender/blenlib/BLI_buffer.h
+++ b/source/blender/blenlib/BLI_buffer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_color.hh b/source/blender/blenlib/BLI_color.hh
index deb1774a4c527d5faa72dd3f5c9d64418d8f4c10..0754221eb65c9c8c10c5ff0fa12bed98c1661120 100644
--- a/source/blender/blenlib/BLI_color.hh
+++ b/source/blender/blenlib/BLI_color.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_compiler_attrs.h b/source/blender/blenlib/BLI_compiler_attrs.h
index 4b5a7d671f2b53a0d75652fa834f09781ecebf19..99f0aa9f04988f5c5bd51398f3e053ae1a63987f 100644
--- a/source/blender/blenlib/BLI_compiler_attrs.h
+++ b/source/blender/blenlib/BLI_compiler_attrs.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_compiler_compat.h b/source/blender/blenlib/BLI_compiler_compat.h
index 023fea3853e20077e337536ff8b7d37f6ade8779..d1f825f7e3d905c6dd070f3521840f60b8aca3ea 100644
--- a/source/blender/blenlib/BLI_compiler_compat.h
+++ b/source/blender/blenlib/BLI_compiler_compat.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /* clang-format off */
 
diff --git a/source/blender/blenlib/BLI_compiler_typecheck.h b/source/blender/blenlib/BLI_compiler_typecheck.h
index 18be2190c1b54b7a9f050330e4f191a84368ead9..0c9513ab1309f5c49eb2f161b3fcfa4f8cc32d6d 100644
--- a/source/blender/blenlib/BLI_compiler_typecheck.h
+++ b/source/blender/blenlib/BLI_compiler_typecheck.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_console.h b/source/blender/blenlib/BLI_console.h
index dc07d3df7549fd9e7886e01bb1e8d89fa253a9e6..2c77a14a57379488fc036096ce1b43762ffdd1de 100644
--- a/source/blender/blenlib/BLI_console.h
+++ b/source/blender/blenlib/BLI_console.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_convexhull_2d.h b/source/blender/blenlib/BLI_convexhull_2d.h
index 77f3eedec9556dff298df4d89b00280c41b73902..0b4c3d486fbd343a979d76cd5004a4772bf7874c 100644
--- a/source/blender/blenlib/BLI_convexhull_2d.h
+++ b/source/blender/blenlib/BLI_convexhull_2d.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_delaunay_2d.h b/source/blender/blenlib/BLI_delaunay_2d.h
index 1ee0be64cee42955f31126d2a9d48901b2b0e7a2..2d8428e164f725ab7ba46ade1d7ab7c95e65d734 100644
--- a/source/blender/blenlib/BLI_delaunay_2d.h
+++ b/source/blender/blenlib/BLI_delaunay_2d.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_dial_2d.h b/source/blender/blenlib/BLI_dial_2d.h
index fdbc3d4430b4b5c46f776d7db47a24b478c343db..f8336165ff34a7039e25489041584360c6372543 100644
--- a/source/blender/blenlib/BLI_dial_2d.h
+++ b/source/blender/blenlib/BLI_dial_2d.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_disjoint_set.hh b/source/blender/blenlib/BLI_disjoint_set.hh
index 2002577f956282705f224cfbc80bbbfaf3e14ff5..d135aa9030789d310a3562a9cb74da949461f088 100644
--- a/source/blender/blenlib/BLI_disjoint_set.hh
+++ b/source/blender/blenlib/BLI_disjoint_set.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_dlrbTree.h b/source/blender/blenlib/BLI_dlrbTree.h
index ad6e350ba2c9caedec614822b8e8d74ebea7e067..9dfe260cee1b0aa019ca4aa638ec4df7c0829e11 100644
--- a/source/blender/blenlib/BLI_dlrbTree.h
+++ b/source/blender/blenlib/BLI_dlrbTree.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_dot_export.hh b/source/blender/blenlib/BLI_dot_export.hh
index 0de8b3b87477208240a5ffb4d96dbfdfb7f8c545..b6decca072052c78ee23de4fdd27bc1a4a4d3265 100644
--- a/source/blender/blenlib/BLI_dot_export.hh
+++ b/source/blender/blenlib/BLI_dot_export.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_dot_export_attribute_enums.hh b/source/blender/blenlib/BLI_dot_export_attribute_enums.hh
index 8cbe7a3e6e6a93ce13a47bff6d1f30b5be2b620b..af23322c7c3723e01b777fa2f09d8995d58658eb 100644
--- a/source/blender/blenlib/BLI_dot_export_attribute_enums.hh
+++ b/source/blender/blenlib/BLI_dot_export_attribute_enums.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_dynlib.h b/source/blender/blenlib/BLI_dynlib.h
index 628e33b6f026f079ac2be55745584fe63d381ae7..e77d56ee64012ff12c34380f4e0e1d64294edf6c 100644
--- a/source/blender/blenlib/BLI_dynlib.h
+++ b/source/blender/blenlib/BLI_dynlib.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/BLI_dynstr.h b/source/blender/blenlib/BLI_dynstr.h
index 90d93f29bcb3e79d409a8bcbe2f5049663d51c74..6529f1bec2ca962298396c8fda42bb7756854d23 100644
--- a/source/blender/blenlib/BLI_dynstr.h
+++ b/source/blender/blenlib/BLI_dynstr.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_easing.h b/source/blender/blenlib/BLI_easing.h
index e6bf8c3bdfa210f382f6929d9b432549f67ac5d5..6fd60fb65faf1d48cb3ab49ac34840048c261e6e 100644
--- a/source/blender/blenlib/BLI_easing.h
+++ b/source/blender/blenlib/BLI_easing.h
@@ -1,32 +1,5 @@
-/*
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *   * Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- *
- *   * Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *
- *   * Neither the name of the author nor the names of contributors may be
- *     used to endorse or promote products derived from this software without
- *     specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Copyright (c) 2001 Robert Penner
- * All rights reserved.
- */
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2001 Robert Penner. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_edgehash.h b/source/blender/blenlib/BLI_edgehash.h
index 26eb8ab7665f2d61cf0cc575b00e5213485cc8ae..facb3ef909b273ce8a71ca70d163c2ad8fc9e8d2 100644
--- a/source/blender/blenlib/BLI_edgehash.h
+++ b/source/blender/blenlib/BLI_edgehash.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_endian_defines.h b/source/blender/blenlib/BLI_endian_defines.h
index 31f28572c798b0d94ccec4f19b71f13ae7707192..e39dba9e2facc48163baa38f468193008fe1f01c 100644
--- a/source/blender/blenlib/BLI_endian_defines.h
+++ b/source/blender/blenlib/BLI_endian_defines.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_endian_switch.h b/source/blender/blenlib/BLI_endian_switch.h
index c8257483616806e87cafc49b42571378bd4fc54a..8de65ce8f77b5c14dbee37f921b8c23fe316b4d6 100644
--- a/source/blender/blenlib/BLI_endian_switch.h
+++ b/source/blender/blenlib/BLI_endian_switch.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /* Use a define instead of `#pragma once` because of `BLI_endian_switch_inline.h` */
 #ifndef __BLI_ENDIAN_SWITCH_H__
diff --git a/source/blender/blenlib/BLI_endian_switch_inline.h b/source/blender/blenlib/BLI_endian_switch_inline.h
index 31be7fd47e438ba6ebcadd10e5e527a9cde48565..ce44348d4ddf58ef521539f371bdd1981989b73f 100644
--- a/source/blender/blenlib/BLI_endian_switch_inline.h
+++ b/source/blender/blenlib/BLI_endian_switch_inline.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_enumerable_thread_specific.hh b/source/blender/blenlib/BLI_enumerable_thread_specific.hh
index ce7df1ff4b90b594884a7dc89306443ecad8beaf..339f02dce0f9830e4714a0b1e7f86d140a63639d 100644
--- a/source/blender/blenlib/BLI_enumerable_thread_specific.hh
+++ b/source/blender/blenlib/BLI_enumerable_thread_specific.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_expr_pylike_eval.h b/source/blender/blenlib/BLI_expr_pylike_eval.h
index dccb1863b4b2c6be85d588156ca37610f4b6b16c..41fd8baa8fc226acdc22e0857774a94113d9014a 100644
--- a/source/blender/blenlib/BLI_expr_pylike_eval.h
+++ b/source/blender/blenlib/BLI_expr_pylike_eval.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation, Alexander Gavrilov
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation, Alexander Gavrilov. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_fileops.h b/source/blender/blenlib/BLI_fileops.h
index 28cb5f6d84bcc86fcb8b7f0b03f711b01f6b5020..6f8b479dddd9513eb3a94e1b74659359bb4e8c24 100644
--- a/source/blender/blenlib/BLI_fileops.h
+++ b/source/blender/blenlib/BLI_fileops.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/BLI_fileops.hh b/source/blender/blenlib/BLI_fileops.hh
index c69b1983c59e0f9d45c72731d1de4f1ffb717c0e..6d7abd0abf6f49444313ff9aef63189d7b2e2248 100644
--- a/source/blender/blenlib/BLI_fileops.hh
+++ b/source/blender/blenlib/BLI_fileops.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/BLI_fileops_types.h b/source/blender/blenlib/BLI_fileops_types.h
index cdae9665f986175a0a58930c4b89cbf998c0066d..5f70237de3bcc044dfbab6acfc52629518ff0d34 100644
--- a/source/blender/blenlib/BLI_fileops_types.h
+++ b/source/blender/blenlib/BLI_fileops_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_filereader.h b/source/blender/blenlib/BLI_filereader.h
index f232ad72cc4a567d1a5780366ba082e53030b01a..a0f4f82b50570fb8d313f5202d442dfbc4d4a24a 100644
--- a/source/blender/blenlib/BLI_filereader.h
+++ b/source/blender/blenlib/BLI_filereader.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/BLI_float4x4.hh b/source/blender/blenlib/BLI_float4x4.hh
index f451f58f6cf5c657df13b50e0d20e278570c19d4..60765aaec09f09e0ec1a9bce6cad8d5db5f9c734 100644
--- a/source/blender/blenlib/BLI_float4x4.hh
+++ b/source/blender/blenlib/BLI_float4x4.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_fnmatch.h b/source/blender/blenlib/BLI_fnmatch.h
index d3a5d5fb53e1f013aace3cffcc6a37b626a0d1ca..48cfaa58a36cbcc3ef5f2d92d3e8d4021ffd7a73 100644
--- a/source/blender/blenlib/BLI_fnmatch.h
+++ b/source/blender/blenlib/BLI_fnmatch.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 1991 1992 1993 Free Software Foundation, Inc. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_function_ref.hh b/source/blender/blenlib/BLI_function_ref.hh
index c762756b474260f3a8b07d0a042d335aa55b70a1..5f18e994991db6840614bc9ad9caebb048dda053 100644
--- a/source/blender/blenlib/BLI_function_ref.hh
+++ b/source/blender/blenlib/BLI_function_ref.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_ghash.h b/source/blender/blenlib/BLI_ghash.h
index 1c5adb8ee82824ffb7af57f7d0512c17a02c55e9..7f90ec20b66c460dc7ed577d249eb0d4191fee02 100644
--- a/source/blender/blenlib/BLI_ghash.h
+++ b/source/blender/blenlib/BLI_ghash.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_gsqueue.h b/source/blender/blenlib/BLI_gsqueue.h
index a35c743c80b57113f763112abb5f312b9e41a495..8ebf0b93aa53d64d15acba38e523fc918a7fd4e7 100644
--- a/source/blender/blenlib/BLI_gsqueue.h
+++ b/source/blender/blenlib/BLI_gsqueue.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_hash.h b/source/blender/blenlib/BLI_hash.h
index cfd39ea3cf87ed89ce822d8750c260250d2c16e6..952fcd56d85f2d47dd023a66da46919887a51ca4 100644
--- a/source/blender/blenlib/BLI_hash.h
+++ b/source/blender/blenlib/BLI_hash.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_hash.hh b/source/blender/blenlib/BLI_hash.hh
index 9132aacf7b96af38398a396f49c3447b00e5497c..25841180fcfa6d44ee6d962354ff9ed0de32fe0b 100644
--- a/source/blender/blenlib/BLI_hash.hh
+++ b/source/blender/blenlib/BLI_hash.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_hash_md5.h b/source/blender/blenlib/BLI_hash_md5.h
index 7b5868d7ffc803afaef6bd19b812aecd2af9efba..45b21afae79eb089e4b4c147a3485d4b5a3efc77 100644
--- a/source/blender/blenlib/BLI_hash_md5.h
+++ b/source/blender/blenlib/BLI_hash_md5.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_hash_mm2a.h b/source/blender/blenlib/BLI_hash_mm2a.h
index 2619e516861517231150405218eaa458066ca178..8638ce1907478e039c371d237ce5e28dcbcdaeae 100644
--- a/source/blender/blenlib/BLI_hash_mm2a.h
+++ b/source/blender/blenlib/BLI_hash_mm2a.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_hash_mm3.h b/source/blender/blenlib/BLI_hash_mm3.h
index 99c24f53dd48c71f1ea8dac2f2007c33629ce97a..85d3cba62c363e234d43a2b66964fce81fc87a61 100644
--- a/source/blender/blenlib/BLI_hash_mm3.h
+++ b/source/blender/blenlib/BLI_hash_mm3.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_hash_tables.hh b/source/blender/blenlib/BLI_hash_tables.hh
index 9fc8ff30f79bda046aaae4d84dbd12a0fc32c5b3..40b20dbd84f72102dcb7671e6b6d27254c2a6c7b 100644
--- a/source/blender/blenlib/BLI_hash_tables.hh
+++ b/source/blender/blenlib/BLI_hash_tables.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_heap.h b/source/blender/blenlib/BLI_heap.h
index b6a12521fff80b9de073c7ccd13764b0a43a911f..e8aa95f6aa767f9aa6b88c72c9308adf184eed61 100644
--- a/source/blender/blenlib/BLI_heap.h
+++ b/source/blender/blenlib/BLI_heap.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_heap_simple.h b/source/blender/blenlib/BLI_heap_simple.h
index 5583f209de07dffe0c8415a875350823ece2d0e0..79504096d6705088c3919416283cd5a07ec65e18 100644
--- a/source/blender/blenlib/BLI_heap_simple.h
+++ b/source/blender/blenlib/BLI_heap_simple.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_index_mask.hh b/source/blender/blenlib/BLI_index_mask.hh
index 2dca3689cb13873522c31683dd5af5b7d99712ff..7f4e7be543b3ee969392591f27b1fa888c58c1fc 100644
--- a/source/blender/blenlib/BLI_index_mask.hh
+++ b/source/blender/blenlib/BLI_index_mask.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_index_range.hh b/source/blender/blenlib/BLI_index_range.hh
index cc6040d49db7ded2c6b94e51f96da0cbb16118a8..25edba8c631f492b64159572266ac1ddb928b94f 100644
--- a/source/blender/blenlib/BLI_index_range.hh
+++ b/source/blender/blenlib/BLI_index_range.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_inplace_priority_queue.hh b/source/blender/blenlib/BLI_inplace_priority_queue.hh
index f0f0dd9b517d63c56c04747c3617f370d8496ebe..29821330f9b5210614cb9b248262c3c8f1730073 100644
--- a/source/blender/blenlib/BLI_inplace_priority_queue.hh
+++ b/source/blender/blenlib/BLI_inplace_priority_queue.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_iterator.h b/source/blender/blenlib/BLI_iterator.h
index 198e42f340dec710046174c3b092c6d2eef08197..6b4f5b40e94b5dc05eb8122c21120bdce409f325 100644
--- a/source/blender/blenlib/BLI_iterator.h
+++ b/source/blender/blenlib/BLI_iterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_jitter_2d.h b/source/blender/blenlib/BLI_jitter_2d.h
index a0af352ddd2393551357da8cecfea7a39c7371c5..fdc7ea63b19db104684c2a06a3711609df770d8d 100644
--- a/source/blender/blenlib/BLI_jitter_2d.h
+++ b/source/blender/blenlib/BLI_jitter_2d.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_kdopbvh.h b/source/blender/blenlib/BLI_kdopbvh.h
index cee9ec4c0a8edf2c1e2bda98ef89767a2663797f..5e56eec2ec694345a20748f761ca11407c76ce59 100644
--- a/source/blender/blenlib/BLI_kdopbvh.h
+++ b/source/blender/blenlib/BLI_kdopbvh.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_kdtree.h b/source/blender/blenlib/BLI_kdtree.h
index bb61ba17d99d4806243bd26ca40cdab854a5fc45..696b2206b5ff863ecaf10867c020cd2b742a4dba 100644
--- a/source/blender/blenlib/BLI_kdtree.h
+++ b/source/blender/blenlib/BLI_kdtree.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_kdtree_impl.h b/source/blender/blenlib/BLI_kdtree_impl.h
index b15ae4a8a2402ec353fedca5a4448a28ca2429af..08fa40fd972f1615796d780da671381287fe378d 100644
--- a/source/blender/blenlib/BLI_kdtree_impl.h
+++ b/source/blender/blenlib/BLI_kdtree_impl.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/BLI_lasso_2d.h b/source/blender/blenlib/BLI_lasso_2d.h
index 2e4a2ed22b4d96f09b17b0cb2c9093c9f0b07d1d..69625a9da832b541e1b020616bd92aa87013c5a4 100644
--- a/source/blender/blenlib/BLI_lasso_2d.h
+++ b/source/blender/blenlib/BLI_lasso_2d.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_linear_allocator.hh b/source/blender/blenlib/BLI_linear_allocator.hh
index bb14a6008a7f15a2c06e25084730f8ba4e135665..6532c59a846f5755e7a0902fc1a19cc27917a67b 100644
--- a/source/blender/blenlib/BLI_linear_allocator.hh
+++ b/source/blender/blenlib/BLI_linear_allocator.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/BLI_link_utils.h b/source/blender/blenlib/BLI_link_utils.h
index 7aa7300da16cc5d78426cc903f3d162172d72c6f..4c915e78bed0d9a779dbf49b9b268ca1b616d4bf 100644
--- a/source/blender/blenlib/BLI_link_utils.h
+++ b/source/blender/blenlib/BLI_link_utils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_linklist.h b/source/blender/blenlib/BLI_linklist.h
index d872921defcfc850697ac1166ce8386cc35cc9ee..527e7e134e53fc93515e675078ab29e49227da86 100644
--- a/source/blender/blenlib/BLI_linklist.h
+++ b/source/blender/blenlib/BLI_linklist.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_linklist_lockfree.h b/source/blender/blenlib/BLI_linklist_lockfree.h
index d2083bdd44eb632ede541e67dac02dfe42b1334c..d0432f83586aaa1c57c7798929e349d2d1cb4cf0 100644
--- a/source/blender/blenlib/BLI_linklist_lockfree.h
+++ b/source/blender/blenlib/BLI_linklist_lockfree.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_linklist_stack.h b/source/blender/blenlib/BLI_linklist_stack.h
index d07bc40c92312a9355631e8fe042d23cf5547d00..e4eecd9a58353d5c55f4608acbf5912b5d251cc6 100644
--- a/source/blender/blenlib/BLI_linklist_stack.h
+++ b/source/blender/blenlib/BLI_linklist_stack.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_listbase.h b/source/blender/blenlib/BLI_listbase.h
index f970563d2a69463bb2adb3f7d8cec780ec6d625c..237fcdae8b9d417260d21fa55092423254718ce0 100644
--- a/source/blender/blenlib/BLI_listbase.h
+++ b/source/blender/blenlib/BLI_listbase.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_listbase_wrapper.hh b/source/blender/blenlib/BLI_listbase_wrapper.hh
index ed2a2b5e5ec76c43266e64a8b4224714beafe2f1..25e029a5616662e940ed4c57591e6df5f4e11fa5 100644
--- a/source/blender/blenlib/BLI_listbase_wrapper.hh
+++ b/source/blender/blenlib/BLI_listbase_wrapper.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_map.hh b/source/blender/blenlib/BLI_map.hh
index 0e7d7c0604968165c4ca9283b95cedc973a4bbb1..3cbb81b5c7d2be7ef0dd870f5760405119b68b75 100644
--- a/source/blender/blenlib/BLI_map.hh
+++ b/source/blender/blenlib/BLI_map.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_map_slots.hh b/source/blender/blenlib/BLI_map_slots.hh
index 7658ae51fd976384768fa784a9bcfc48698a93cb..6426216913f0cc96a0dc787e55a08f075f361f33 100644
--- a/source/blender/blenlib/BLI_map_slots.hh
+++ b/source/blender/blenlib/BLI_map_slots.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math.h b/source/blender/blenlib/BLI_math.h
index b3ce6c0747a8dc499a10d055ecdd0e741f176c3c..ccf90166cdffe84f6f8cfda4885c62c5d4c62355 100644
--- a/source/blender/blenlib/BLI_math.h
+++ b/source/blender/blenlib/BLI_math.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_base.h b/source/blender/blenlib/BLI_math_base.h
index 69abe49c207345b353c5ae1098978015a319d276..f9c05fb116ee57d33ba14e95d30bca2ef76b47b8 100644
--- a/source/blender/blenlib/BLI_math_base.h
+++ b/source/blender/blenlib/BLI_math_base.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_base_safe.h b/source/blender/blenlib/BLI_math_base_safe.h
index 1d6590b2faa0ce75e1719ac362eb3d51d2c770f0..bfef65d06c53db88f38f7079668e9178c4d02915 100644
--- a/source/blender/blenlib/BLI_math_base_safe.h
+++ b/source/blender/blenlib/BLI_math_base_safe.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_bits.h b/source/blender/blenlib/BLI_math_bits.h
index 70a54879446d18c2605744eaf88bd2a079549019..c56c5a11015df798c6bab1cde9d36fae7cfde013 100644
--- a/source/blender/blenlib/BLI_math_bits.h
+++ b/source/blender/blenlib/BLI_math_bits.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_boolean.hh b/source/blender/blenlib/BLI_math_boolean.hh
index 8cf93c82dec2314ce81c3bb9d8483eee78c37060..df03e63c4169dfcc0a8dd1411d8f5c62b14d00ec 100644
--- a/source/blender/blenlib/BLI_math_boolean.hh
+++ b/source/blender/blenlib/BLI_math_boolean.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_color.h b/source/blender/blenlib/BLI_math_color.h
index e1956d2bc2bf1d1b3a290b9f106a19fb6325a05c..dcc00064e47779aead8620d84225b2c224923aeb 100644
--- a/source/blender/blenlib/BLI_math_color.h
+++ b/source/blender/blenlib/BLI_math_color.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_color_blend.h b/source/blender/blenlib/BLI_math_color_blend.h
index df70da0eec3beb23e223e3c78723892850739cef..725cb51337cbc40af15d70ab323310a4616e9fc6 100644
--- a/source/blender/blenlib/BLI_math_color_blend.h
+++ b/source/blender/blenlib/BLI_math_color_blend.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_geom.h b/source/blender/blenlib/BLI_math_geom.h
index 2556aae6aa4c2c45ad73465370ad67fa24b07ed2..3d2ac5688ff536f7bb68d4324d3f7ea0e5ef7ec4 100644
--- a/source/blender/blenlib/BLI_math_geom.h
+++ b/source/blender/blenlib/BLI_math_geom.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_inline.h b/source/blender/blenlib/BLI_math_inline.h
index 35e088983859bd8c851b43ffc5583161144fcef3..bf91c9108a9d389e561d07eeee3953c9c8ba5fa6 100644
--- a/source/blender/blenlib/BLI_math_inline.h
+++ b/source/blender/blenlib/BLI_math_inline.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_interp.h b/source/blender/blenlib/BLI_math_interp.h
index 0af250064f61400f4116d8f5a24825bbb0198be2..00fbf4fc0b1b3f0cba7e82d45a2d63fc3fd46315 100644
--- a/source/blender/blenlib/BLI_math_interp.h
+++ b/source/blender/blenlib/BLI_math_interp.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_matrix.h b/source/blender/blenlib/BLI_math_matrix.h
index ac9364fc254aa08811111b29fd0c5c5150c64fe5..edfe53bc9388f2d105f6139b877e3f61eaf178ad 100644
--- a/source/blender/blenlib/BLI_math_matrix.h
+++ b/source/blender/blenlib/BLI_math_matrix.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_mpq.hh b/source/blender/blenlib/BLI_math_mpq.hh
index 3d8c63491874e54b9923f789aa1ef6a2dc0ad6de..7b43c90da846f7524bd25f5247f441916620e432 100644
--- a/source/blender/blenlib/BLI_math_mpq.hh
+++ b/source/blender/blenlib/BLI_math_mpq.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_rotation.h b/source/blender/blenlib/BLI_math_rotation.h
index 907dc5601fe1803f3ac17b2485c97ecbde40597f..7d10e52f699590e93dc99886b584d8f0263a9d44 100644
--- a/source/blender/blenlib/BLI_math_rotation.h
+++ b/source/blender/blenlib/BLI_math_rotation.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_solvers.h b/source/blender/blenlib/BLI_math_solvers.h
index ca413d2b49cfb042c64e5f43a128445eb6cd430a..ec86ee7f4e4b2bf394b03131442dd425bbd4ea8a 100644
--- a/source/blender/blenlib/BLI_math_solvers.h
+++ b/source/blender/blenlib/BLI_math_solvers.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_statistics.h b/source/blender/blenlib/BLI_math_statistics.h
index 586c82a8844b8032d6db6c8298c4e648fcd26a79..d33d4be360a21420a31f781e3589f9215015cc7b 100644
--- a/source/blender/blenlib/BLI_math_statistics.h
+++ b/source/blender/blenlib/BLI_math_statistics.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_time.h b/source/blender/blenlib/BLI_math_time.h
index 528577737978d44a01194e69840b3a4b69a07e44..d2cd72eb21a7e7799751c1d37b241d88ba2d00d6 100644
--- a/source/blender/blenlib/BLI_math_time.h
+++ b/source/blender/blenlib/BLI_math_time.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_vec_mpq_types.hh b/source/blender/blenlib/BLI_math_vec_mpq_types.hh
index 392c647fe0d94a5b2a8404eb0f52273525738bc9..a7dad2921dda1f9831b69e4235cd20f19d13a511 100644
--- a/source/blender/blenlib/BLI_math_vec_mpq_types.hh
+++ b/source/blender/blenlib/BLI_math_vec_mpq_types.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_vec_types.hh b/source/blender/blenlib/BLI_math_vec_types.hh
index 52aacd294e4a83985fe24dfe6ae87e355a8bacac..192284cb8fc5cf6b93205f49856204ce6f4d7803 100644
--- a/source/blender/blenlib/BLI_math_vec_types.hh
+++ b/source/blender/blenlib/BLI_math_vec_types.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2022, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_vector.h b/source/blender/blenlib/BLI_math_vector.h
index 04b7ac5db62945416a50c4cbbf7ec1a26be409f4..4689072bcce6a3ae2b4825ce7886a41468eaf1d0 100644
--- a/source/blender/blenlib/BLI_math_vector.h
+++ b/source/blender/blenlib/BLI_math_vector.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_math_vector.hh b/source/blender/blenlib/BLI_math_vector.hh
index 1d60447445e495b18136371c72d61f53bdeeb1f8..930f3b62fa58da1baad346ef558300706e37cfbd 100644
--- a/source/blender/blenlib/BLI_math_vector.hh
+++ b/source/blender/blenlib/BLI_math_vector.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2022, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_memarena.h b/source/blender/blenlib/BLI_memarena.h
index bcfe2efc5e53b5da64694e5b22cfb43f45413bd9..2c9e4c4700c1dab8fc68583de45433d3737f7fa9 100644
--- a/source/blender/blenlib/BLI_memarena.h
+++ b/source/blender/blenlib/BLI_memarena.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/BLI_memblock.h b/source/blender/blenlib/BLI_memblock.h
index 827ecc4973968bacf890d683d369d8d5b85f7eec..0d20ab08490e862bc9e1e8f97888cf72da7960a2 100644
--- a/source/blender/blenlib/BLI_memblock.h
+++ b/source/blender/blenlib/BLI_memblock.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_memiter.h b/source/blender/blenlib/BLI_memiter.h
index 231aa31fad9dbb8781800f814aa994b0a52eaebb..727092706c4bd0514771867335cae1f5bb87084e 100644
--- a/source/blender/blenlib/BLI_memiter.h
+++ b/source/blender/blenlib/BLI_memiter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_memory_utils.h b/source/blender/blenlib/BLI_memory_utils.h
index 09d8f6469056dc7212cf8a64dcff4947650ddb10..8ba744a87ca6189726a488a482d62461a854e7e2 100644
--- a/source/blender/blenlib/BLI_memory_utils.h
+++ b/source/blender/blenlib/BLI_memory_utils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /* Use a define instead of `#pragma once` because of `BLI_utildefines.h` */
 #ifndef __BLI_MEMORY_UTILS_H__
diff --git a/source/blender/blenlib/BLI_memory_utils.hh b/source/blender/blenlib/BLI_memory_utils.hh
index 9a5be79b61eeba8b99ccb4b3aed08fbc8ad5efc4..dd6b8463d84cf80738780a3dc56f418b10b2af82 100644
--- a/source/blender/blenlib/BLI_memory_utils.hh
+++ b/source/blender/blenlib/BLI_memory_utils.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_mempool.h b/source/blender/blenlib/BLI_mempool.h
index caf946cabe331ad6b23c3397791e21e95542be66..740cf4dedb96aba55d49b64dd5420a6db838cef0 100644
--- a/source/blender/blenlib/BLI_mempool.h
+++ b/source/blender/blenlib/BLI_mempool.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_mesh_boolean.hh b/source/blender/blenlib/BLI_mesh_boolean.hh
index a55b21755278007d0198026cc62fb10556ebb60b..41b39dc434a8f6f3aeb2e5ddba75b68767fd5f74 100644
--- a/source/blender/blenlib/BLI_mesh_boolean.hh
+++ b/source/blender/blenlib/BLI_mesh_boolean.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_mesh_intersect.hh b/source/blender/blenlib/BLI_mesh_intersect.hh
index 0ebee6f16a8777ea9b9822677a2d00dcb32ea2ab..ba1d9b293c7800643e157fc8ec9667371df53dea 100644
--- a/source/blender/blenlib/BLI_mesh_intersect.hh
+++ b/source/blender/blenlib/BLI_mesh_intersect.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_mmap.h b/source/blender/blenlib/BLI_mmap.h
index 4920152c9d17d0a06f916a44eeeb8267e78c4818..950c5b4818e2c7ca4a09240f877db14847cc35ca 100644
--- a/source/blender/blenlib/BLI_mmap.h
+++ b/source/blender/blenlib/BLI_mmap.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_multi_value_map.hh b/source/blender/blenlib/BLI_multi_value_map.hh
index d3073c984174622baecf55b8086499a2bc4321d6..4b6300c09aa07471811c3de23cdf85c814c27c5b 100644
--- a/source/blender/blenlib/BLI_multi_value_map.hh
+++ b/source/blender/blenlib/BLI_multi_value_map.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_noise.h b/source/blender/blenlib/BLI_noise.h
index 51aee9dc2bae94b6f5d439e345904a15276b183a..c56e9da27b0ed9457fc0b0b80fd623e9a297f4c0 100644
--- a/source/blender/blenlib/BLI_noise.h
+++ b/source/blender/blenlib/BLI_noise.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_noise.hh b/source/blender/blenlib/BLI_noise.hh
index 297c65c250a5db51f8b38744a57a85bbad906cf9..d9a947c2d2fa0e356555a463e211fd1b8cece70f 100644
--- a/source/blender/blenlib/BLI_noise.hh
+++ b/source/blender/blenlib/BLI_noise.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_path_util.h b/source/blender/blenlib/BLI_path_util.h
index 8881983fbec40a404e309950802cdd469a5e8808..b4427b1dc2a9b1b0ce8823642f20696c7fa29658 100644
--- a/source/blender/blenlib/BLI_path_util.h
+++ b/source/blender/blenlib/BLI_path_util.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenlib/BLI_polyfill_2d.h b/source/blender/blenlib/BLI_polyfill_2d.h
index 25a624ba005929ff7ff03d061ad6f8420cc9f3a4..a551188737f0f1d26229f99c382dcf2acb19530f 100644
--- a/source/blender/blenlib/BLI_polyfill_2d.h
+++ b/source/blender/blenlib/BLI_polyfill_2d.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_polyfill_2d_beautify.h b/source/blender/blenlib/BLI_polyfill_2d_beautify.h
index 3a94ef46acaba44e619ae554367f96901cdfb9c9..c5a7cb80ff2829a7451d1b0138ac42dc879a47f8 100644
--- a/source/blender/blenlib/BLI_polyfill_2d_beautify.h
+++ b/source/blender/blenlib/BLI_polyfill_2d_beautify.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_probing_strategies.hh b/source/blender/blenlib/BLI_probing_strategies.hh
index d0b7eaafbf698e8cb893601dbf65c199c187fdb0..c6152e4d03d1e34591679dfccef889adb42f19b9 100644
--- a/source/blender/blenlib/BLI_probing_strategies.hh
+++ b/source/blender/blenlib/BLI_probing_strategies.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_quadric.h b/source/blender/blenlib/BLI_quadric.h
index 0364202398625f89add68cfb5cb2236e88036999..535edbe0cbb837346d550c06e979bf12cfa4d705 100644
--- a/source/blender/blenlib/BLI_quadric.h
+++ b/source/blender/blenlib/BLI_quadric.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_rand.h b/source/blender/blenlib/BLI_rand.h
index a1df6e1263e7d899ebc895c7e08252c765153db8..2cfd868e9432667f47fe03a7cd5fa6188c1042c0 100644
--- a/source/blender/blenlib/BLI_rand.h
+++ b/source/blender/blenlib/BLI_rand.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_rand.hh b/source/blender/blenlib/BLI_rand.hh
index 667d6df899644762f86be1d8448ab99910dc1a9a..069a81bb84b24871b27d7ae97b30521f87679ef6 100644
--- a/source/blender/blenlib/BLI_rand.hh
+++ b/source/blender/blenlib/BLI_rand.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/BLI_range.h b/source/blender/blenlib/BLI_range.h
index e55f443769d63c1ca441aa8370d556df12d8f762..bfa0a0269c83717e888b20016bc4dbeba4a05dcf 100644
--- a/source/blender/blenlib/BLI_range.h
+++ b/source/blender/blenlib/BLI_range.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_rect.h b/source/blender/blenlib/BLI_rect.h
index b8906a979775267232fd7a0904f755ce09dc809f..312c92e78817be9799f4e64ff0f2bdfc9ef0c456 100644
--- a/source/blender/blenlib/BLI_rect.h
+++ b/source/blender/blenlib/BLI_rect.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_resource_scope.hh b/source/blender/blenlib/BLI_resource_scope.hh
index f0d8e71478edc739d18e58c7004212c8494757ea..9826b694e16f2ed9c0700630670eb93a2b1c64c5 100644
--- a/source/blender/blenlib/BLI_resource_scope.hh
+++ b/source/blender/blenlib/BLI_resource_scope.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_scanfill.h b/source/blender/blenlib/BLI_scanfill.h
index eca3c00017c08929227cbf7ec12c6638d13d5f55..8e43a3c5a8f96f977a0dafbdd65413b720d7a561 100644
--- a/source/blender/blenlib/BLI_scanfill.h
+++ b/source/blender/blenlib/BLI_scanfill.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_serialize.hh b/source/blender/blenlib/BLI_serialize.hh
index 0560679499426c12b26ecd399898f6b2d7fb2d77..bd91c522d0677208d60ffa9758d4b6ab5d939997 100644
--- a/source/blender/blenlib/BLI_serialize.hh
+++ b/source/blender/blenlib/BLI_serialize.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_session_uuid.h b/source/blender/blenlib/BLI_session_uuid.h
index 29e291add5aec9947dc401388a6638517c1420ba..dbccf8149b2be28199ed34acf5b76927c595f8bb 100644
--- a/source/blender/blenlib/BLI_session_uuid.h
+++ b/source/blender/blenlib/BLI_session_uuid.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_set.hh b/source/blender/blenlib/BLI_set.hh
index 2e0dfea70e90faf413c437eb6de631b20aa59383..bf177802c97242a240d6bb91567074ff1f74d135 100644
--- a/source/blender/blenlib/BLI_set.hh
+++ b/source/blender/blenlib/BLI_set.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_set_slots.hh b/source/blender/blenlib/BLI_set_slots.hh
index d50ef95f11eeb3c50cee32ef1c7f8c6a1ba8d4c2..805c194ac901eb3fc76156a7fe16de06cc490604 100644
--- a/source/blender/blenlib/BLI_set_slots.hh
+++ b/source/blender/blenlib/BLI_set_slots.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_simd.h b/source/blender/blenlib/BLI_simd.h
index 2ebbd7a2250a1ea34dcd1cd42025bfe6ffd0fad6..34adb93e8d021e847ede09eb1ed46258aa6d9294 100644
--- a/source/blender/blenlib/BLI_simd.h
+++ b/source/blender/blenlib/BLI_simd.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_smallhash.h b/source/blender/blenlib/BLI_smallhash.h
index 9c274d25fbadb2a1aec4948eb191ee86bac78447..55b0fafe59677d5ad0ce011b648ac00c7c873957 100644
--- a/source/blender/blenlib/BLI_smallhash.h
+++ b/source/blender/blenlib/BLI_smallhash.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_sort.h b/source/blender/blenlib/BLI_sort.h
index 31a052eb79da541b9cdcf723e51b6b73f97ce1ae..1824234bf84a16c3ccb4b8a0e2cd0e9e66fbcbdf 100644
--- a/source/blender/blenlib/BLI_sort.h
+++ b/source/blender/blenlib/BLI_sort.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_sort_utils.h b/source/blender/blenlib/BLI_sort_utils.h
index e54252f4e1b5bb2fc796ebef72498cfb6e047cb5..a8950df4f2249c2725d1e0fd4ed92cb35862c9aa 100644
--- a/source/blender/blenlib/BLI_sort_utils.h
+++ b/source/blender/blenlib/BLI_sort_utils.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_span.hh b/source/blender/blenlib/BLI_span.hh
index b4497977815a0f4d4471844a911b4bd1e2a0e2ae..d82f21a57fffc146fcdc371318d1647e399a3b7c 100644
--- a/source/blender/blenlib/BLI_span.hh
+++ b/source/blender/blenlib/BLI_span.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_stack.h b/source/blender/blenlib/BLI_stack.h
index eb4e69a42d477b9eb8c4841211f2c0734ad1594f..a32acd46fc8b4a15671d1f9e1937f03dcd90d69d 100644
--- a/source/blender/blenlib/BLI_stack.h
+++ b/source/blender/blenlib/BLI_stack.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_stack.hh b/source/blender/blenlib/BLI_stack.hh
index c9c355288b6b489cdfd88f03f9724ce6dcfa24a7..a06515a778114ec6fabd70292bb34d3d7aad84ab 100644
--- a/source/blender/blenlib/BLI_stack.hh
+++ b/source/blender/blenlib/BLI_stack.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_strict_flags.h b/source/blender/blenlib/BLI_strict_flags.h
index b967d7e494dad400b8d89fdbce84f4662b837640..8489871d5dae04306b135297c058b731aa4f0a8f 100644
--- a/source/blender/blenlib/BLI_strict_flags.h
+++ b/source/blender/blenlib/BLI_strict_flags.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_string.h b/source/blender/blenlib/BLI_string.h
index 8177545911c9a164d750fe50c2de421f1033cabc..7d0884f83dc85acefbac7c648061608911844354 100644
--- a/source/blender/blenlib/BLI_string.h
+++ b/source/blender/blenlib/BLI_string.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_string_cursor_utf8.h b/source/blender/blenlib/BLI_string_cursor_utf8.h
index e78c7b56cf7734f189fa780ddc19c0132af98388..70ba5da8e5ac83fe2d933bc03f9e963c54bdd890 100644
--- a/source/blender/blenlib/BLI_string_cursor_utf8.h
+++ b/source/blender/blenlib/BLI_string_cursor_utf8.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_string_ref.hh b/source/blender/blenlib/BLI_string_ref.hh
index 32a03213dc15c12958462b5a5a523b2187070a58..3823bd026306d87142c6ee0c4b7e7f0698eda7ac 100644
--- a/source/blender/blenlib/BLI_string_ref.hh
+++ b/source/blender/blenlib/BLI_string_ref.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_string_search.h b/source/blender/blenlib/BLI_string_search.h
index f0bf259d213ed97e54842592b2611fd036eae90b..101a1dc12050ca6326bf32664395c7b22f6494e1 100644
--- a/source/blender/blenlib/BLI_string_search.h
+++ b/source/blender/blenlib/BLI_string_search.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_string_utf8.h b/source/blender/blenlib/BLI_string_utf8.h
index 108a2f5fc7dceea8e851a714e7318370dbbb5479..4c5cc3fd9c5e7e7254f5d77105707b1e73fc2efe 100644
--- a/source/blender/blenlib/BLI_string_utf8.h
+++ b/source/blender/blenlib/BLI_string_utf8.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_string_utils.h b/source/blender/blenlib/BLI_string_utils.h
index 818bfe8182b330ef96605f14b1547af25348d59a..df82e94ae2ed8950bbb1ee5fb2c4c1e236895c15 100644
--- a/source/blender/blenlib/BLI_string_utils.h
+++ b/source/blender/blenlib/BLI_string_utils.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_sys_types.h b/source/blender/blenlib/BLI_sys_types.h
index 95327ff33b889aff0f8e7ad9e1206ca133bae657..3e31fc84896febd15557a1093b30a97002ae9402 100644
--- a/source/blender/blenlib/BLI_sys_types.h
+++ b/source/blender/blenlib/BLI_sys_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/BLI_system.h b/source/blender/blenlib/BLI_system.h
index 2e5e07d84071a7141ca9c2c12f5304919cbbccc2..5ec445dac4b54954a3e3af047ae0d93bd6d8cc89 100644
--- a/source/blender/blenlib/BLI_system.h
+++ b/source/blender/blenlib/BLI_system.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_task.h b/source/blender/blenlib/BLI_task.h
index e487f8acd98c01079fcf4dba232d3113b522350c..1bd491650482a8bd8a6d015f9d4f64c83e38c54b 100644
--- a/source/blender/blenlib/BLI_task.h
+++ b/source/blender/blenlib/BLI_task.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /* Use a define instead of `#pragma once` because of `bmesh_iterators_inline.h` */
 #ifndef __BLI_TASK_H__
diff --git a/source/blender/blenlib/BLI_task.hh b/source/blender/blenlib/BLI_task.hh
index 8f75aa19cfe68b56a81b7aa2ad15f9d0011c049b..d87a86ce6964b2aae68da541e3b859d185689aee 100644
--- a/source/blender/blenlib/BLI_task.hh
+++ b/source/blender/blenlib/BLI_task.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_threads.h b/source/blender/blenlib/BLI_threads.h
index 60ed5f0544a2f5d6a18936c267ccd50a73f1089e..dac33e1d4219052e2fe80fabcd130cbbd09b0124 100644
--- a/source/blender/blenlib/BLI_threads.h
+++ b/source/blender/blenlib/BLI_threads.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_timecode.h b/source/blender/blenlib/BLI_timecode.h
index 1cd18dc86abeffeff890789b4927176bd77e7b52..38db9e38adef7e70e901ea6f81bf78fd78359520 100644
--- a/source/blender/blenlib/BLI_timecode.h
+++ b/source/blender/blenlib/BLI_timecode.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_timeit.hh b/source/blender/blenlib/BLI_timeit.hh
index 8e10758557619527aada00907d07aa74ebccbff3..31e1b5d2a0385e7cb5f9aa99e91eb6de8171aadd 100644
--- a/source/blender/blenlib/BLI_timeit.hh
+++ b/source/blender/blenlib/BLI_timeit.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_timer.h b/source/blender/blenlib/BLI_timer.h
index b1cc8d5514f1907c7e5cf5c3cf8bcf58d0478b19..440fca0d54dea626dee2a911b74ff9e6f90dce71 100644
--- a/source/blender/blenlib/BLI_timer.h
+++ b/source/blender/blenlib/BLI_timer.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_user_counter.hh b/source/blender/blenlib/BLI_user_counter.hh
index 8cebadeac4cca00a0c0b82a887262cc873d9f512..11cd845ff5388e5ca511a5d2441f88040ebcb880 100644
--- a/source/blender/blenlib/BLI_user_counter.hh
+++ b/source/blender/blenlib/BLI_user_counter.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_utildefines.h b/source/blender/blenlib/BLI_utildefines.h
index c4b3181066966693e7059f8f7148b5a6222bacff..51f0d3f486a77cc95b2b4cb0e694b0d76c4a7b60 100644
--- a/source/blender/blenlib/BLI_utildefines.h
+++ b/source/blender/blenlib/BLI_utildefines.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /* Use a define instead of `#pragma once` because of `BLI_memory_utils.h` */
 #ifndef __BLI_UTILDEFINES_H__
diff --git a/source/blender/blenlib/BLI_utildefines_iter.h b/source/blender/blenlib/BLI_utildefines_iter.h
index 5fb6248e1e939c68f5323a27dc73f8035b1a29f3..870e90bd9713e162e1a31a71fdcf4e78935714b7 100644
--- a/source/blender/blenlib/BLI_utildefines_iter.h
+++ b/source/blender/blenlib/BLI_utildefines_iter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_utildefines_stack.h b/source/blender/blenlib/BLI_utildefines_stack.h
index f50004ef79a1313832204d9677d552c79796a561..fd5c3c7216166fceba3969a6798be7c174917a4e 100644
--- a/source/blender/blenlib/BLI_utildefines_stack.h
+++ b/source/blender/blenlib/BLI_utildefines_stack.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_utildefines_variadic.h b/source/blender/blenlib/BLI_utildefines_variadic.h
index be0d0b93cc72a9e317f305d86d7df0d13e2ee371..3659b2ce84b51f247eb2c0a6b9086c5172881339 100644
--- a/source/blender/blenlib/BLI_utildefines_variadic.h
+++ b/source/blender/blenlib/BLI_utildefines_variadic.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_utility_mixins.hh b/source/blender/blenlib/BLI_utility_mixins.hh
index 69b1d85b3b6c084daba870b5f82ad6e5b0eef708..666f7e2b3bac31d20171c39ddd304f6b3d2b62ee 100644
--- a/source/blender/blenlib/BLI_utility_mixins.hh
+++ b/source/blender/blenlib/BLI_utility_mixins.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/BLI_uuid.h b/source/blender/blenlib/BLI_uuid.h
index ed0d31b625f1ba39acd2b6e596b2b5c2ec63f99a..6606ba926e326d194fca52fccbd9930fc28c7547 100644
--- a/source/blender/blenlib/BLI_uuid.h
+++ b/source/blender/blenlib/BLI_uuid.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_uvproject.h b/source/blender/blenlib/BLI_uvproject.h
index c1cc1cdbb51a495bff187f8ebe720bbc85f7bfd9..75f39de6b7f1680ace119f7115ac51723b82eca4 100644
--- a/source/blender/blenlib/BLI_uvproject.h
+++ b/source/blender/blenlib/BLI_uvproject.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenlib/BLI_vector.hh b/source/blender/blenlib/BLI_vector.hh
index 1b10a4c0897da0568b4ad55b2441ab87200102a2..d5d33b8a000577b73f6226be5b715e715f731207 100644
--- a/source/blender/blenlib/BLI_vector.hh
+++ b/source/blender/blenlib/BLI_vector.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_vector_adaptor.hh b/source/blender/blenlib/BLI_vector_adaptor.hh
index 9c805f242e4109b5f9e759246aa82f013ce54627..82d731aacd87bf51ce7adb5af268043829a3efa5 100644
--- a/source/blender/blenlib/BLI_vector_adaptor.hh
+++ b/source/blender/blenlib/BLI_vector_adaptor.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_vector_set.hh b/source/blender/blenlib/BLI_vector_set.hh
index ed744d09314f2f46d48ba21ad66c6ac0fd98b797..23284fd94bc42bdf2929cccbd418bf52ce8ec446 100644
--- a/source/blender/blenlib/BLI_vector_set.hh
+++ b/source/blender/blenlib/BLI_vector_set.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_vector_set_slots.hh b/source/blender/blenlib/BLI_vector_set_slots.hh
index b79341ed744c19614af63ef3afc455747e23299f..35dedd577050d455ea3b1940b6c5befc61b2bdfe 100644
--- a/source/blender/blenlib/BLI_vector_set_slots.hh
+++ b/source/blender/blenlib/BLI_vector_set_slots.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_virtual_array.hh b/source/blender/blenlib/BLI_virtual_array.hh
index 231ce1bdd678315c3f2dd308b781a0a32b2c1942..d697590b946e1e7af78a6cc25e8af1c689c6b455 100644
--- a/source/blender/blenlib/BLI_virtual_array.hh
+++ b/source/blender/blenlib/BLI_virtual_array.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_virtual_vector_array.hh b/source/blender/blenlib/BLI_virtual_vector_array.hh
index 7960c6b142081a999b173fab3ee538c596016885..64f7366368c01d9616cdba8adfef6e31538c3f53 100644
--- a/source/blender/blenlib/BLI_virtual_vector_array.hh
+++ b/source/blender/blenlib/BLI_virtual_vector_array.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_voronoi_2d.h b/source/blender/blenlib/BLI_voronoi_2d.h
index 0e27229352fd607f6f9c6cf76fed6a58b282ed18..004ca249fb6d50be2761056df114e066f954cf0c 100644
--- a/source/blender/blenlib/BLI_voronoi_2d.h
+++ b/source/blender/blenlib/BLI_voronoi_2d.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_voxel.h b/source/blender/blenlib/BLI_voxel.h
index 83e4bdbdc10ff530d99bc88764b9361645e2ff2f..21578edd72f055b2781d104dc3654cf955717595 100644
--- a/source/blender/blenlib/BLI_voxel.h
+++ b/source/blender/blenlib/BLI_voxel.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/BLI_winstuff.h b/source/blender/blenlib/BLI_winstuff.h
index 2ea557e971ae9aaeacc8dc2cdd4c54901980f18c..7201e1bb4a1d687cfd54b164f5de628e3e8ded39 100644
--- a/source/blender/blenlib/BLI_winstuff.h
+++ b/source/blender/blenlib/BLI_winstuff.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/CMakeLists.txt b/source/blender/blenlib/CMakeLists.txt
index 31e550379f1e71643ee19b5f92c726bdb0eec96f..29015084679d668348f468709c2a496ca2be59f2 100644
--- a/source/blender/blenlib/CMakeLists.txt
+++ b/source/blender/blenlib/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/blenlib/PIL_time.h b/source/blender/blenlib/PIL_time.h
index 311869e844ac6b764aff29ca351e9eb1a74b2d5d..b5bb7a575d85b27c306458883dbf160a950862c4 100644
--- a/source/blender/blenlib/PIL_time.h
+++ b/source/blender/blenlib/PIL_time.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/PIL_time_utildefines.h b/source/blender/blenlib/PIL_time_utildefines.h
index d404a8b2b8a305615f26c09a6f90f9f5a26b7d8f..489c712d1d9a6415ec0b3cf4f84239295f98538d 100644
--- a/source/blender/blenlib/PIL_time_utildefines.h
+++ b/source/blender/blenlib/PIL_time_utildefines.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_args.c b/source/blender/blenlib/intern/BLI_args.c
index 70a51982925cf9dc78c40c88b17637fdca47e354..61447ab1a9e3d4ff12870e6105f7a402411e724a 100644
--- a/source/blender/blenlib/intern/BLI_args.c
+++ b/source/blender/blenlib/intern/BLI_args.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_array.c b/source/blender/blenlib/intern/BLI_array.c
index f4d60a9e04768fef05625d7b5aff794d8a71ae9a..9456cd0c0bf5e53bcc21efb615f778d82ebaf379 100644
--- a/source/blender/blenlib/intern/BLI_array.c
+++ b/source/blender/blenlib/intern/BLI_array.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_assert.c b/source/blender/blenlib/intern/BLI_assert.c
index e089ef149a058ec0338098972673fbea73e19ccf..2ebeba43dbed1ff74b8df6352d47b5bf79edadbe 100644
--- a/source/blender/blenlib/intern/BLI_assert.c
+++ b/source/blender/blenlib/intern/BLI_assert.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_color.cc b/source/blender/blenlib/intern/BLI_color.cc
index 6dcef4f4688bea38c8219a4672de49fe5ce71f5c..c4efa985fa4f792d005f3d2d51b980bc94318dc5 100644
--- a/source/blender/blenlib/intern/BLI_color.cc
+++ b/source/blender/blenlib/intern/BLI_color.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_color.hh"
 
diff --git a/source/blender/blenlib/intern/BLI_dial_2d.c b/source/blender/blenlib/intern/BLI_dial_2d.c
index 786fdd219a3437f79fc1ccb933f58b8dc2316588..7e8c62a983344f0134ab8193d207805ad7f33225 100644
--- a/source/blender/blenlib/intern/BLI_dial_2d.c
+++ b/source/blender/blenlib/intern/BLI_dial_2d.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_dynstr.c b/source/blender/blenlib/intern/BLI_dynstr.c
index bc61282fa201e3201ccffdfd6c33c01f672a46fa..e89dff46b24334839b84385f7dbddda500055af8 100644
--- a/source/blender/blenlib/intern/BLI_dynstr.c
+++ b/source/blender/blenlib/intern/BLI_dynstr.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_filelist.c b/source/blender/blenlib/intern/BLI_filelist.c
index 169f34f52c3e170d8ef62e6df2963152eba97918..9f1f8fe044883bbea843cc060c27529736ec0b6d 100644
--- a/source/blender/blenlib/intern/BLI_filelist.c
+++ b/source/blender/blenlib/intern/BLI_filelist.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_ghash.c b/source/blender/blenlib/intern/BLI_ghash.c
index 8e2a8ab7639903c1c678dfb8369b5fa78d88b836..57e05233efa4943495edb74602c9e98796a09ddc 100644
--- a/source/blender/blenlib/intern/BLI_ghash.c
+++ b/source/blender/blenlib/intern/BLI_ghash.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_ghash_utils.c b/source/blender/blenlib/intern/BLI_ghash_utils.c
index f8e621e406c9d1150f5e7a0a9d4a47fe80b23ada..e12e272832fbb2647b01a0a3be848bfa052b976c 100644
--- a/source/blender/blenlib/intern/BLI_ghash_utils.c
+++ b/source/blender/blenlib/intern/BLI_ghash_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_heap.c b/source/blender/blenlib/intern/BLI_heap.c
index efa0110ed53bedb23e18338614b21f864dba41d5..cf8073d4ba43473311795d3916fcd12026841aa4 100644
--- a/source/blender/blenlib/intern/BLI_heap.c
+++ b/source/blender/blenlib/intern/BLI_heap.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_heap_simple.c b/source/blender/blenlib/intern/BLI_heap_simple.c
index f285dd074c3ef48b4ef04237ad7e53e548459903..0876888bcc5b7c5d09513be377ece36bc8b4708f 100644
--- a/source/blender/blenlib/intern/BLI_heap_simple.c
+++ b/source/blender/blenlib/intern/BLI_heap_simple.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_index_range.cc b/source/blender/blenlib/intern/BLI_index_range.cc
index 43c6265a17d07230221898252cf68b1386afed4b..346f55d9405546f67e6fbeb22cca8a2d47b6e9c2 100644
--- a/source/blender/blenlib/intern/BLI_index_range.cc
+++ b/source/blender/blenlib/intern/BLI_index_range.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <atomic>
 #include <mutex>
diff --git a/source/blender/blenlib/intern/BLI_kdopbvh.c b/source/blender/blenlib/intern/BLI_kdopbvh.c
index 64c2ce2a4a3cc1634f7b562dbbf95c2a33826ba9..0c3497d3edfceb69fd39dc5b6cf0d3b27eb4adca 100644
--- a/source/blender/blenlib/intern/BLI_kdopbvh.c
+++ b/source/blender/blenlib/intern/BLI_kdopbvh.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_linklist.c b/source/blender/blenlib/intern/BLI_linklist.c
index f34179b2fa6840aaaa5a0ee24a434b5396023e30..f884ab8e1ebacaecbcfa7fd516b590b0c5348be5 100644
--- a/source/blender/blenlib/intern/BLI_linklist.c
+++ b/source/blender/blenlib/intern/BLI_linklist.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_linklist_lockfree.c b/source/blender/blenlib/intern/BLI_linklist_lockfree.c
index 795e5ba31403c8b8094b756e50330875607b4413..350930f73c5821ca5619101985bb9110d033ade4 100644
--- a/source/blender/blenlib/intern/BLI_linklist_lockfree.c
+++ b/source/blender/blenlib/intern/BLI_linklist_lockfree.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_memarena.c b/source/blender/blenlib/intern/BLI_memarena.c
index f1fc3bba4ea4e074a8b9076c94b5902dc2bc2824..3b73a81012d6a559028d7a2db0eb6d129072a3b0 100644
--- a/source/blender/blenlib/intern/BLI_memarena.c
+++ b/source/blender/blenlib/intern/BLI_memarena.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_memblock.c b/source/blender/blenlib/intern/BLI_memblock.c
index 4e9d68d92e4af991c39dd6468d6eda1ae3e61181..f780d52030124dbe0268efbd14b3803548633a16 100644
--- a/source/blender/blenlib/intern/BLI_memblock.c
+++ b/source/blender/blenlib/intern/BLI_memblock.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_memiter.c b/source/blender/blenlib/intern/BLI_memiter.c
index 98348fe2938b2f1e3fd431ce6fc98aefbd387631..ac0c367785c923458abb7e60ad05289e58b900f8 100644
--- a/source/blender/blenlib/intern/BLI_memiter.c
+++ b/source/blender/blenlib/intern/BLI_memiter.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_mempool.c b/source/blender/blenlib/intern/BLI_mempool.c
index df85d3e75531f1646eb48f3f9bc376442d8fe20d..76a82e505e3306a641701d496c7e0db53102481c 100644
--- a/source/blender/blenlib/intern/BLI_mempool.c
+++ b/source/blender/blenlib/intern/BLI_mempool.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_mempool_private.h b/source/blender/blenlib/intern/BLI_mempool_private.h
index 03b0b11297b9af4a85d2e6b0874f0eeebbc0435b..5e17d4af05a5d8f67a7e9b2ebeda042984823340 100644
--- a/source/blender/blenlib/intern/BLI_mempool_private.h
+++ b/source/blender/blenlib/intern/BLI_mempool_private.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenlib/intern/BLI_mmap.c b/source/blender/blenlib/intern/BLI_mmap.c
index c25e89df818dc6a6dca8a9e80bcd415fe76cd7c6..f1a7c49bc29a997a2db0ca2a0f67ee97b8ad82bc 100644
--- a/source/blender/blenlib/intern/BLI_mmap.c
+++ b/source/blender/blenlib/intern/BLI_mmap.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/BLI_timer.c b/source/blender/blenlib/intern/BLI_timer.c
index af987587d9033c344ad1917f33f658b029c9fef0..8aa5521870f429c2988cafc6ebd7a777902d3166 100644
--- a/source/blender/blenlib/intern/BLI_timer.c
+++ b/source/blender/blenlib/intern/BLI_timer.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/DLRB_tree.c b/source/blender/blenlib/intern/DLRB_tree.c
index 85ff5a6e46feb47bd594e51d18090024342a89a4..0965d8ba05e2c9f8e0ff981c5e7ad40ea3f0afdc 100644
--- a/source/blender/blenlib/intern/DLRB_tree.c
+++ b/source/blender/blenlib/intern/DLRB_tree.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/array_store.c b/source/blender/blenlib/intern/array_store.c
index 825682736e8ff0b7dffa75d39de6d714dbba6d59..3ea004c272121563f7cbe8076cf26cb8aa0d0beb 100644
--- a/source/blender/blenlib/intern/array_store.c
+++ b/source/blender/blenlib/intern/array_store.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/array_store_utils.c b/source/blender/blenlib/intern/array_store_utils.c
index 64c985a4c63835fe3ebae77c16cf29e3a213b0f5..9ac8630204ade5753e988c8530776b9cff8c9204 100644
--- a/source/blender/blenlib/intern/array_store_utils.c
+++ b/source/blender/blenlib/intern/array_store_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/array_utils.c b/source/blender/blenlib/intern/array_utils.c
index 36bd193810edbe7530ba13508250d07e7ca2317f..f1f1dd60ddf7e00059c76b6528afb00cdc5e5b34 100644
--- a/source/blender/blenlib/intern/array_utils.c
+++ b/source/blender/blenlib/intern/array_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/astar.c b/source/blender/blenlib/intern/astar.c
index 8347e00adc8efa70342f31ab98a679356c8c1967..3aeb1f143d9c738dc324ccd98f8a175950c45e39 100644
--- a/source/blender/blenlib/intern/astar.c
+++ b/source/blender/blenlib/intern/astar.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/bitmap.c b/source/blender/blenlib/intern/bitmap.c
index 681736b7927fd16007b887672994a8c1b223d90c..dd022986e14ee333c418166f6fc05720f31693bd 100644
--- a/source/blender/blenlib/intern/bitmap.c
+++ b/source/blender/blenlib/intern/bitmap.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 by Nicholas Bishop. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/bitmap_draw_2d.c b/source/blender/blenlib/intern/bitmap_draw_2d.c
index 31b8939753e7806fe73ec1b00ed96fd931d3db9b..7e7ad0346a8a6a6db8e1790fe3b465120aab50fb 100644
--- a/source/blender/blenlib/intern/bitmap_draw_2d.c
+++ b/source/blender/blenlib/intern/bitmap_draw_2d.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/boxpack_2d.c b/source/blender/blenlib/intern/boxpack_2d.c
index 5d35feee6994523e489797e71bf5b50424a5c92c..78f5088e8b1dda3f1a4bbe589fdee3ea15ed61db 100644
--- a/source/blender/blenlib/intern/boxpack_2d.c
+++ b/source/blender/blenlib/intern/boxpack_2d.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/buffer.c b/source/blender/blenlib/intern/buffer.c
index 9df3205128172f51602717645428679def2b5df6..a542c32979731ebe6a9cf5d6e458012403bf5bc1 100644
--- a/source/blender/blenlib/intern/buffer.c
+++ b/source/blender/blenlib/intern/buffer.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/convexhull_2d.c b/source/blender/blenlib/intern/convexhull_2d.c
index df675b512d99184a5071e1f0211958169a7f4a1f..d1daa511b1a8a87e7a18a3faec161736ad9644d2 100644
--- a/source/blender/blenlib/intern/convexhull_2d.c
+++ b/source/blender/blenlib/intern/convexhull_2d.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/delaunay_2d.cc b/source/blender/blenlib/intern/delaunay_2d.cc
index 842e6cb6135e0c600652b71416c57122b438d644..cb0ba763c945bf8035efe11ecb43fc91031807b7 100644
--- a/source/blender/blenlib/intern/delaunay_2d.cc
+++ b/source/blender/blenlib/intern/delaunay_2d.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/dot_export.cc b/source/blender/blenlib/intern/dot_export.cc
index 93075a23c07808c6fb6abacef9007f48bb00e758..796fd6a934ab299ce83c1560a085045f94ffb5a6 100644
--- a/source/blender/blenlib/intern/dot_export.cc
+++ b/source/blender/blenlib/intern/dot_export.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <iomanip>
 
diff --git a/source/blender/blenlib/intern/dynlib.c b/source/blender/blenlib/intern/dynlib.c
index a555098698bc4e0a77c304f5e612a36a861c3ba2..1cd23ea2ca0b277134cefb685784384df5a0c36c 100644
--- a/source/blender/blenlib/intern/dynlib.c
+++ b/source/blender/blenlib/intern/dynlib.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/easing.c b/source/blender/blenlib/intern/easing.c
index 07aafc1b57baf4e04b249362edbd451fd7be5139..0c67b5f4cfad097b99556dea93a61599d467b09f 100644
--- a/source/blender/blenlib/intern/easing.c
+++ b/source/blender/blenlib/intern/easing.c
@@ -1,32 +1,5 @@
-/*
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * * Redistributions of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- *
- * * Redistributions in binary form must reproduce the above copyright
- *   notice, this list of conditions and the following disclaimer in the
- *   documentation and/or other materials provided with the distribution.
- *
- * * Neither the name of the author nor the names of contributors may be
- *   used to endorse or promote products derived from this software without
- *   specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Copyright (c) 2001 Robert Penner
- * All rights reserved.
- */
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2001 Robert Penner. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/edgehash.c b/source/blender/blenlib/intern/edgehash.c
index d8e59b6f6ee5864177d986d617dbd9c15a7c440d..46361c04625b574cd564c3910d55dd4819185e07 100644
--- a/source/blender/blenlib/intern/edgehash.c
+++ b/source/blender/blenlib/intern/edgehash.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/endian_switch.c b/source/blender/blenlib/intern/endian_switch.c
index 7e316d930a0c698e32c3fc1758aa67b977de3fc4..10d0bfb815b4d0d1f0051d8f4832180f05a96401 100644
--- a/source/blender/blenlib/intern/endian_switch.c
+++ b/source/blender/blenlib/intern/endian_switch.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/expr_pylike_eval.c b/source/blender/blenlib/intern/expr_pylike_eval.c
index c6be8836229f96d3935aafcf90fa25616094daa7..db677cd304c292189eaeb484a71b2cb595ac2ec0 100644
--- a/source/blender/blenlib/intern/expr_pylike_eval.c
+++ b/source/blender/blenlib/intern/expr_pylike_eval.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation, Alexander Gavrilov
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation, Alexander Gavrilov. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/fileops.c b/source/blender/blenlib/intern/fileops.c
index 838644054afe682dbfc3dd3c7590856380b6796d..27f8f1d4bc81e2b2ae97d8af6dfd67dd47d7f957 100644
--- a/source/blender/blenlib/intern/fileops.c
+++ b/source/blender/blenlib/intern/fileops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/fileops.cc b/source/blender/blenlib/intern/fileops.cc
index 5ceedbd8cb540600391d268c99c59065aa82bfe6..31e9e817116a860ef356f9798d20cb20d508b977 100644
--- a/source/blender/blenlib/intern/fileops.cc
+++ b/source/blender/blenlib/intern/fileops.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/filereader_file.c b/source/blender/blenlib/intern/filereader_file.c
index 3a833871e27e792d94a65cbf9426e3c5fcca9b9c..7ba3c43880cfa6e2047278c8ff05fe50695690bf 100644
--- a/source/blender/blenlib/intern/filereader_file.c
+++ b/source/blender/blenlib/intern/filereader_file.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004-2021 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004-2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/filereader_gzip.c b/source/blender/blenlib/intern/filereader_gzip.c
index fe766e5da41094655696d04c0798bd7a64b46922..52a18819ef53b0d0116cd0733c182b6c2773ccbe 100644
--- a/source/blender/blenlib/intern/filereader_gzip.c
+++ b/source/blender/blenlib/intern/filereader_gzip.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004-2021 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004-2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/filereader_memory.c b/source/blender/blenlib/intern/filereader_memory.c
index 150fed7d1cc8a755b1b1f01988b11bed0582e616..d8cfad69c74750bc6c70608d3fc6b08c27121189 100644
--- a/source/blender/blenlib/intern/filereader_memory.c
+++ b/source/blender/blenlib/intern/filereader_memory.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004-2021 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004-2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/filereader_zstd.c b/source/blender/blenlib/intern/filereader_zstd.c
index 5a04f5b11f39be92a0aba1ffce50be1fdf5b1c9d..0a04a443e76539041268957000e74f4e4b7936c9 100644
--- a/source/blender/blenlib/intern/filereader_zstd.c
+++ b/source/blender/blenlib/intern/filereader_zstd.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/gsqueue.c b/source/blender/blenlib/intern/gsqueue.c
index 1bd99497432f9174379ad124f29c5db849b534ce..4bf4e15d864e158df3b80167bf259d4f8d6e8d0f 100644
--- a/source/blender/blenlib/intern/gsqueue.c
+++ b/source/blender/blenlib/intern/gsqueue.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/hash_md5.c b/source/blender/blenlib/intern/hash_md5.c
index a2cc1a0fc12bb8bc522ec5ff124f1db6c43dd3db..cc59662b6de67ec45b239a77810c4732cf8f7d2a 100644
--- a/source/blender/blenlib/intern/hash_md5.c
+++ b/source/blender/blenlib/intern/hash_md5.c
@@ -1,21 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- * Copyright (C) 1995 Free Software Foundation, Inc.
- *
- * Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 1995 Free Software Foundation, Inc.
+ * Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/hash_mm2a.c b/source/blender/blenlib/intern/hash_mm2a.c
index a98ae083fc84103e21dfeb34905f1cd2bcaaf2e8..8411b49ef3803d8da81426f1d84f01ab2329a5d3 100644
--- a/source/blender/blenlib/intern/hash_mm2a.c
+++ b/source/blender/blenlib/intern/hash_mm2a.c
@@ -1,19 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- * Copyright (C) 2014 Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/hash_mm3.c b/source/blender/blenlib/intern/hash_mm3.c
index 4a175f67f30ba67e9c4a012dcabef9e4f8d74b63..cc1143bf55fb793fb6958374f2730e2b1418bad4 100644
--- a/source/blender/blenlib/intern/hash_mm3.c
+++ b/source/blender/blenlib/intern/hash_mm3.c
@@ -1,19 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- * Copyright (C) 2018 Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/index_mask.cc b/source/blender/blenlib/intern/index_mask.cc
index a73e6caf313d3d940e1c7b3eee4c3517cf851281..b55de6a9264a5a6ada81dac597d46b17fb900332 100644
--- a/source/blender/blenlib/intern/index_mask.cc
+++ b/source/blender/blenlib/intern/index_mask.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_index_mask.hh"
 
diff --git a/source/blender/blenlib/intern/jitter_2d.c b/source/blender/blenlib/intern/jitter_2d.c
index 068cb3d2f70ebdaecc84df07cf64f907e03248af..5e840e8178e2f86c83cd1a71c2300f15e0b290de 100644
--- a/source/blender/blenlib/intern/jitter_2d.c
+++ b/source/blender/blenlib/intern/jitter_2d.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/kdtree_1d.c b/source/blender/blenlib/intern/kdtree_1d.c
index b5d5707df29bcf2950f71ae6909e9c3fc4933579..862102325ff1d7c9ce1cd8110d80d6c7d3aae33c 100644
--- a/source/blender/blenlib/intern/kdtree_1d.c
+++ b/source/blender/blenlib/intern/kdtree_1d.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/kdtree_2d.c b/source/blender/blenlib/intern/kdtree_2d.c
index a9d1c953bff31476af62347bdc6c6e3bf301be37..7210bbf7e742a97c1452dddeb33733386bdc631e 100644
--- a/source/blender/blenlib/intern/kdtree_2d.c
+++ b/source/blender/blenlib/intern/kdtree_2d.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/kdtree_3d.c b/source/blender/blenlib/intern/kdtree_3d.c
index 7b24a249e18e0b604c02e8ded2677dca1a9b14cd..3becba8b404b04850f51824dcea3b3ba823ae6e4 100644
--- a/source/blender/blenlib/intern/kdtree_3d.c
+++ b/source/blender/blenlib/intern/kdtree_3d.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/kdtree_4d.c b/source/blender/blenlib/intern/kdtree_4d.c
index cdddf5e3168c8ed5594e8b43b76fb76398b24680..926dfc4f1ea43b585a4c70d8a809f3f36794d676 100644
--- a/source/blender/blenlib/intern/kdtree_4d.c
+++ b/source/blender/blenlib/intern/kdtree_4d.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/kdtree_impl.h b/source/blender/blenlib/intern/kdtree_impl.h
index c0e740b39b3eafd39a6ac1946632793fc9d783fd..d9ae826093c147d74b16c916f1cf6e3912765214 100644
--- a/source/blender/blenlib/intern/kdtree_impl.h
+++ b/source/blender/blenlib/intern/kdtree_impl.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/lasso_2d.c b/source/blender/blenlib/intern/lasso_2d.c
index ee10a233d39390a099cbf104c06667a0509a55a8..13b0e416b76a608f8b808a6ce95e34ae14df2b59 100644
--- a/source/blender/blenlib/intern/lasso_2d.c
+++ b/source/blender/blenlib/intern/lasso_2d.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/list_sort_impl.h b/source/blender/blenlib/intern/list_sort_impl.h
index 626956e2fb60df26ccd576951edd33b38db34d28..e1b93986f4a7c980bcf40c2b2180db2d877d2021 100644
--- a/source/blender/blenlib/intern/list_sort_impl.h
+++ b/source/blender/blenlib/intern/list_sort_impl.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/listbase.c b/source/blender/blenlib/intern/listbase.c
index c21b448e5056dac3becd7c23594cae53d436f3f0..e2044955e4871fd9b1571a6aa97171931d307511 100644
--- a/source/blender/blenlib/intern/listbase.c
+++ b/source/blender/blenlib/intern/listbase.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_base.c b/source/blender/blenlib/intern/math_base.c
index f2e7f411524ffeeb4c1fb075ffe6647834bdf07d..257153dc6fe9652091378f2019687521216e1afa 100644
--- a/source/blender/blenlib/intern/math_base.c
+++ b/source/blender/blenlib/intern/math_base.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_base_inline.c b/source/blender/blenlib/intern/math_base_inline.c
index a7729d83726d7585d7b94ed98ed9a633828b1061..90a91cbe26fa8a78a4640d3909ba8cfcbe18435a 100644
--- a/source/blender/blenlib/intern/math_base_inline.c
+++ b/source/blender/blenlib/intern/math_base_inline.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_base_safe_inline.c b/source/blender/blenlib/intern/math_base_safe_inline.c
index 5600382e395c4b1b91c9cd41d876672bc7938893..49f4c5b0c19c0c27e8ac585234b742f42b20005d 100644
--- a/source/blender/blenlib/intern/math_base_safe_inline.c
+++ b/source/blender/blenlib/intern/math_base_safe_inline.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifndef __MATH_BASE_SAFE_INLINE_C__
 #define __MATH_BASE_SAFE_INLINE_C__
diff --git a/source/blender/blenlib/intern/math_bits_inline.c b/source/blender/blenlib/intern/math_bits_inline.c
index 1b381dccbfd2b3b206a9c7ae61c3d0f1659ba683..b35937f2cbcfd1da1f02359b4ce2c7896413513d 100644
--- a/source/blender/blenlib/intern/math_bits_inline.c
+++ b/source/blender/blenlib/intern/math_bits_inline.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_boolean.cc b/source/blender/blenlib/intern/math_boolean.cc
index 0bae3c23f79a0a6c5f536f864e3a4d62715d53dd..885d2c13b4929b34ddd5e5c4e6ff9011bd2f2cbe 100644
--- a/source/blender/blenlib/intern/math_boolean.cc
+++ b/source/blender/blenlib/intern/math_boolean.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_color.c b/source/blender/blenlib/intern/math_color.c
index 60931f0c474573c2c449e2a535053e874c8aa3ab..aeeaf47d8130ba398dc08783a828bc06745c29e3 100644
--- a/source/blender/blenlib/intern/math_color.c
+++ b/source/blender/blenlib/intern/math_color.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_color_blend_inline.c b/source/blender/blenlib/intern/math_color_blend_inline.c
index 7d1003a05babb9ea11c714af8dab4caf034f7619..27127f6b56fedb06d241dd41c702cef121c0ecc1 100644
--- a/source/blender/blenlib/intern/math_color_blend_inline.c
+++ b/source/blender/blenlib/intern/math_color_blend_inline.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_color_inline.c b/source/blender/blenlib/intern/math_color_inline.c
index 27cad310aa59b6377e7af2fcb0dc4072c25dd89b..fd0c2e3c5f7965f4405e929acf3a59eec13c7d46 100644
--- a/source/blender/blenlib/intern/math_color_inline.c
+++ b/source/blender/blenlib/intern/math_color_inline.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_geom.c b/source/blender/blenlib/intern/math_geom.c
index afbaf0733b6326c2d345113742012ab5e80cf61a..f96c80185b161e7ca96ecd7de1d403f635bd013b 100644
--- a/source/blender/blenlib/intern/math_geom.c
+++ b/source/blender/blenlib/intern/math_geom.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_geom_inline.c b/source/blender/blenlib/intern/math_geom_inline.c
index 17580d84c380d4d8d674b87118597a096ef7b386..8b68f20e3d1a2fef4c94dfbeaeac32e8513ce940 100644
--- a/source/blender/blenlib/intern/math_geom_inline.c
+++ b/source/blender/blenlib/intern/math_geom_inline.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_interp.c b/source/blender/blenlib/intern/math_interp.c
index fed330aa2f049bdd5462ab53ff7e57169b2d859e..34fcb583232a4dbfa40012c7e15067717b88c422 100644
--- a/source/blender/blenlib/intern/math_interp.c
+++ b/source/blender/blenlib/intern/math_interp.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_matrix.c b/source/blender/blenlib/intern/math_matrix.c
index 73e64c2bee70ef10b42e02917416a9e0d435074b..f295734706f70f12ad3961675228750a424ba696 100644
--- a/source/blender/blenlib/intern/math_matrix.c
+++ b/source/blender/blenlib/intern/math_matrix.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_rotation.c b/source/blender/blenlib/intern/math_rotation.c
index 9de9e3d20451e9e00cbfd8d30f1f0cdacb5417c5..05b280a5a39bcf93d1a4a73793fbd399a4e647b9 100644
--- a/source/blender/blenlib/intern/math_rotation.c
+++ b/source/blender/blenlib/intern/math_rotation.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_solvers.c b/source/blender/blenlib/intern/math_solvers.c
index f7630efd203c70931ff72b9e387eff391f033304..2352d687061753684b7a31d54ed80831f7331211 100644
--- a/source/blender/blenlib/intern/math_solvers.c
+++ b/source/blender/blenlib/intern/math_solvers.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_statistics.c b/source/blender/blenlib/intern/math_statistics.c
index 8087e7a962a73afc81db04288f13bb6e7bd3725b..14baca891c0080c1479df461e31c0b91f7d6253a 100644
--- a/source/blender/blenlib/intern/math_statistics.c
+++ b/source/blender/blenlib/intern/math_statistics.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_time.c b/source/blender/blenlib/intern/math_time.c
index 4484144a81ea94448444660e096c5d9a21a2917a..94c9c194152ec2ded895c7c3b566bfb10b07ef42 100644
--- a/source/blender/blenlib/intern/math_time.c
+++ b/source/blender/blenlib/intern/math_time.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_vec.cc b/source/blender/blenlib/intern/math_vec.cc
index 6fab6c9a3839c2860c39ec7fa582f151a5230658..99c873299fee11a69946c455d9fef413a7a01111 100644
--- a/source/blender/blenlib/intern/math_vec.cc
+++ b/source/blender/blenlib/intern/math_vec.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_vector.c b/source/blender/blenlib/intern/math_vector.c
index fb23018b0e078c0a9c6d5d910dfe284babdae6b8..e71b1150d8f68be4755b7e7b81b8d206875e7ad5 100644
--- a/source/blender/blenlib/intern/math_vector.c
+++ b/source/blender/blenlib/intern/math_vector.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/math_vector_inline.c b/source/blender/blenlib/intern/math_vector_inline.c
index 3e9325720386b3cb835c18520339859944197854..339bfb8f95e84d653e8d1f39907b39514965a4a5 100644
--- a/source/blender/blenlib/intern/math_vector_inline.c
+++ b/source/blender/blenlib/intern/math_vector_inline.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/memory_utils.c b/source/blender/blenlib/intern/memory_utils.c
index 2befcb1bb19a1a88123ef8e82d6ee78e7cd5e991..abfc4d9d4193c0f390217e9e5b62b9d3f76ae685 100644
--- a/source/blender/blenlib/intern/memory_utils.c
+++ b/source/blender/blenlib/intern/memory_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/mesh_boolean.cc b/source/blender/blenlib/intern/mesh_boolean.cc
index a3eae1896d355a8284ab0c1c45f72dc50c72a1a7..3cdc047f5fe429a77e992f314dec8931cd087018 100644
--- a/source/blender/blenlib/intern/mesh_boolean.cc
+++ b/source/blender/blenlib/intern/mesh_boolean.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/mesh_intersect.cc b/source/blender/blenlib/intern/mesh_intersect.cc
index 982759ffcfff625e8f01c252e820d7b8f4ebac09..5295c44c9914b0ecd763fa2547da0ab13f07b82f 100644
--- a/source/blender/blenlib/intern/mesh_intersect.cc
+++ b/source/blender/blenlib/intern/mesh_intersect.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/noise.c b/source/blender/blenlib/intern/noise.c
index ce4dee16d32e442fcafd30315d77e3f3bfbc133f..c39a2b5a27ee7d05072802a5e0afe57815db63dd 100644
--- a/source/blender/blenlib/intern/noise.c
+++ b/source/blender/blenlib/intern/noise.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/path_util.c b/source/blender/blenlib/intern/path_util.c
index 3b9b7ed6ddba83189a7581c597a33aa9c785fdd6..69ba9f7fb7bd88e1d6fadf36f23e4ed4b96573eb 100644
--- a/source/blender/blenlib/intern/path_util.c
+++ b/source/blender/blenlib/intern/path_util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/polyfill_2d.c b/source/blender/blenlib/intern/polyfill_2d.c
index aec3465988464684216ff5bf28f315afac0226c5..76cf7880c7ae575efd256ca86c9aacc83e38958b 100644
--- a/source/blender/blenlib/intern/polyfill_2d.c
+++ b/source/blender/blenlib/intern/polyfill_2d.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/polyfill_2d_beautify.c b/source/blender/blenlib/intern/polyfill_2d_beautify.c
index aab33cb163bfd7ab53e20da8673c63e657ac7c53..c527e88b440d54633975718c86c20aefc4d520c4 100644
--- a/source/blender/blenlib/intern/polyfill_2d_beautify.c
+++ b/source/blender/blenlib/intern/polyfill_2d_beautify.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/quadric.c b/source/blender/blenlib/intern/quadric.c
index ac5221719517e9aa8a712684b53d8630ed52f56b..4f057fb348d0bd03e068e86dd5865efed4cb0cf0 100644
--- a/source/blender/blenlib/intern/quadric.c
+++ b/source/blender/blenlib/intern/quadric.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/rand.cc b/source/blender/blenlib/intern/rand.cc
index 1d2274ede37697853e46d0fc3612117fbcb85c17..27774cad31b6d9f7a6ce2791806140b67bc6ba02 100644
--- a/source/blender/blenlib/intern/rand.cc
+++ b/source/blender/blenlib/intern/rand.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/rct.c b/source/blender/blenlib/intern/rct.c
index 091945c9b12205dd6bf36470d1a308c8adb63f2a..0bb606c288edce14b8b3e7c690086eb4caeab14b 100644
--- a/source/blender/blenlib/intern/rct.c
+++ b/source/blender/blenlib/intern/rct.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/resource_scope.cc b/source/blender/blenlib/intern/resource_scope.cc
index 8c8a03b8ce58dfa8af50b70d2060b2475a4d0fb7..9e4f1cbe5bde1c1693be968b5afb2ca52e0423ff 100644
--- a/source/blender/blenlib/intern/resource_scope.cc
+++ b/source/blender/blenlib/intern/resource_scope.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_resource_scope.hh"
 
diff --git a/source/blender/blenlib/intern/scanfill.c b/source/blender/blenlib/intern/scanfill.c
index 4fd6670507a061b26c6b14ab1e49a302efb6ca89..7e9893925a44778652f40f0a339955be2bb5849e 100644
--- a/source/blender/blenlib/intern/scanfill.c
+++ b/source/blender/blenlib/intern/scanfill.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/scanfill_utils.c b/source/blender/blenlib/intern/scanfill_utils.c
index 89c2a695829e28b35718d762c13e957530b0975f..149589fb933766150377104f5491f62a4799de65 100644
--- a/source/blender/blenlib/intern/scanfill_utils.c
+++ b/source/blender/blenlib/intern/scanfill_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/session_uuid.c b/source/blender/blenlib/intern/session_uuid.c
index ac15a400a929dd9cce356fb57225502a0dab1de4..4c26abdd28aad9afe48b42b76169e2a04d8cf7c4 100644
--- a/source/blender/blenlib/intern/session_uuid.c
+++ b/source/blender/blenlib/intern/session_uuid.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/smallhash.c b/source/blender/blenlib/intern/smallhash.c
index 2278daf5516c9f77d06a424a04ab9a2bc7a596a3..2d76f6626112fd4ab62fb44a5c8637940b467d3c 100644
--- a/source/blender/blenlib/intern/smallhash.c
+++ b/source/blender/blenlib/intern/smallhash.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/sort.c b/source/blender/blenlib/intern/sort.c
index 0d52faaa8c6780f638d40b24d3506936dd6a3634..02cfb9f71a5503008904c3c78021e2325946b6c7 100644
--- a/source/blender/blenlib/intern/sort.c
+++ b/source/blender/blenlib/intern/sort.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/sort_utils.c b/source/blender/blenlib/intern/sort_utils.c
index e02d77de0c7dfc42b4e0d0e36f24e9585314c356..387cf7b4843a2aae312f63ad48406b6b0ea929c7 100644
--- a/source/blender/blenlib/intern/sort_utils.c
+++ b/source/blender/blenlib/intern/sort_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/stack.c b/source/blender/blenlib/intern/stack.c
index 629a6eaa78c2c34908371213b028f65a9d654d25..613196138593675a102c76d037c6b9ebcf454541 100644
--- a/source/blender/blenlib/intern/stack.c
+++ b/source/blender/blenlib/intern/stack.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/storage.c b/source/blender/blenlib/intern/storage.c
index c5e30ac6a6bfa9eb30b64786fef33bac5904dc9f..4fa5ca0c0886f42f2659a689410e2603d02896c4 100644
--- a/source/blender/blenlib/intern/storage.c
+++ b/source/blender/blenlib/intern/storage.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/storage_apple.mm b/source/blender/blenlib/intern/storage_apple.mm
index b0234b9a09301d1efd25fe6f25588950ecd11aa2..aa62fcde463c23c481f8801c996fa87a08632467 100644
--- a/source/blender/blenlib/intern/storage_apple.mm
+++ b/source/blender/blenlib/intern/storage_apple.mm
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/string.c b/source/blender/blenlib/intern/string.c
index 2c626773871e4caa576cf5084181d3d9a52bb10f..976c1b0226f48456320d58b84071090c1d20c88d 100644
--- a/source/blender/blenlib/intern/string.c
+++ b/source/blender/blenlib/intern/string.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/string_cursor_utf8.c b/source/blender/blenlib/intern/string_cursor_utf8.c
index 5e2a0b858144965c97e3423ff1a7d74f1d82c90d..a6e68401368d90431405e7314538275b57277c98 100644
--- a/source/blender/blenlib/intern/string_cursor_utf8.c
+++ b/source/blender/blenlib/intern/string_cursor_utf8.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/string_search.cc b/source/blender/blenlib/intern/string_search.cc
index c5528dce2f269fd7176caf78efa2be7744c38a48..d32737f2a4be3807356b8438fb796cb648ef8f28 100644
--- a/source/blender/blenlib/intern/string_search.cc
+++ b/source/blender/blenlib/intern/string_search.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 #include "BLI_linear_allocator.hh"
diff --git a/source/blender/blenlib/intern/string_utf8.c b/source/blender/blenlib/intern/string_utf8.c
index 807344a912c32edb162adb9c10916d4a6b2dd246..94efb0dd9e73a2e467903a0e3e059b8aa0647fe3 100644
--- a/source/blender/blenlib/intern/string_utf8.c
+++ b/source/blender/blenlib/intern/string_utf8.c
@@ -1,23 +1,8 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * Code from gutf8.c Copyright (C) 1999 Tom Tromey
- *                   Copyright (C) 2000 Red Hat, Inc.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation.
+ * Code from gutf8.c Copyright 1999 Tom Tromey
+ *                   Copyright 2000 Red Hat, Inc.
+ * All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/string_utils.c b/source/blender/blenlib/intern/string_utils.c
index d785d3d17f85d0250d17fdec80296c2d1850d99a..0b9baaff3e9fc68a5f37295fdddfad26d97b2d7f 100644
--- a/source/blender/blenlib/intern/string_utils.c
+++ b/source/blender/blenlib/intern/string_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/system.c b/source/blender/blenlib/intern/system.c
index e64d53467e44d60cbe51c3862272aed729c33879..35e26e0cb33493b7137659dee948cb6e2192bd80 100644
--- a/source/blender/blenlib/intern/system.c
+++ b/source/blender/blenlib/intern/system.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/system_win32.c b/source/blender/blenlib/intern/system_win32.c
index b2360cf743ff9b14ba554986b16161bf93e2696b..f5c678abbc7e15af08534b055cda3f30b4c7deb2 100644
--- a/source/blender/blenlib/intern/system_win32.c
+++ b/source/blender/blenlib/intern/system_win32.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/task_graph.cc b/source/blender/blenlib/intern/task_graph.cc
index d84857caeeaf7dcbcfe2bfe458ab14502a687191..6c1cc818d755205ba4c1be566b54ad41485417e5 100644
--- a/source/blender/blenlib/intern/task_graph.cc
+++ b/source/blender/blenlib/intern/task_graph.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/task_iterator.c b/source/blender/blenlib/intern/task_iterator.c
index 49666eb3082a47cf5997c6195372ce2f8862c3e6..4ee4e6c6ff24e6c7593e9dfa096e2bf52a018b1d 100644
--- a/source/blender/blenlib/intern/task_iterator.c
+++ b/source/blender/blenlib/intern/task_iterator.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/task_pool.cc b/source/blender/blenlib/intern/task_pool.cc
index 1651d4c22056c2ccdcd63c00ebb5fb57bf6281a3..a29dbe95ba9fe88f5012a942d6a0806a5d62989e 100644
--- a/source/blender/blenlib/intern/task_pool.cc
+++ b/source/blender/blenlib/intern/task_pool.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/task_range.cc b/source/blender/blenlib/intern/task_range.cc
index 8407be2cb2b57c663545269a2e4e303d7b9d4bdf..7e405529f0365901f35c196062e05f656661b832 100644
--- a/source/blender/blenlib/intern/task_range.cc
+++ b/source/blender/blenlib/intern/task_range.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/task_scheduler.cc b/source/blender/blenlib/intern/task_scheduler.cc
index 5992e092f4d7fdac75ffb8e4da8d1994b623a673..32c833fae383fb4f0c5c67bde56ff6085b646961 100644
--- a/source/blender/blenlib/intern/task_scheduler.cc
+++ b/source/blender/blenlib/intern/task_scheduler.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/threads.cc b/source/blender/blenlib/intern/threads.cc
index f131a46465080a99361adf6e759c38514bc23cc4..ff67f821d1ea21c7d71a87c1f1eae275c9ccc2ae 100644
--- a/source/blender/blenlib/intern/threads.cc
+++ b/source/blender/blenlib/intern/threads.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/time.c b/source/blender/blenlib/intern/time.c
index 299c40d2cc37eb74443eb5c630c8b5314fded23c..997771a068e353d6eab85fc1c3042d22fd937cae 100644
--- a/source/blender/blenlib/intern/time.c
+++ b/source/blender/blenlib/intern/time.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/timecode.c b/source/blender/blenlib/intern/timecode.c
index 14adab8648bdf61fcc29fe8866253261912e818d..fc78b0ad98d36c39749ef4dd8b1ab20eb6b11f65 100644
--- a/source/blender/blenlib/intern/timecode.c
+++ b/source/blender/blenlib/intern/timecode.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/timeit.cc b/source/blender/blenlib/intern/timeit.cc
index 9e07e44ca1214e6daa00df5369f2b0e66cc61595..2dcfe2e6ab1aecc7f03c1158e15e2a1c003133de 100644
--- a/source/blender/blenlib/intern/timeit.cc
+++ b/source/blender/blenlib/intern/timeit.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_timeit.hh"
 
diff --git a/source/blender/blenlib/intern/uuid.cc b/source/blender/blenlib/intern/uuid.cc
index e2578ffa7c79961e194a278ca255fefa3081cf8e..b175ed4a770e4b1e827b1a927fea84519a4d9f8b 100644
--- a/source/blender/blenlib/intern/uuid.cc
+++ b/source/blender/blenlib/intern/uuid.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/uvproject.c b/source/blender/blenlib/intern/uvproject.c
index dbab0162ebab36a46d088267ad2000c7efea16ec..347166bd57dde54a3dd9ff3b7535123eaa786817 100644
--- a/source/blender/blenlib/intern/uvproject.c
+++ b/source/blender/blenlib/intern/uvproject.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/voronoi_2d.c b/source/blender/blenlib/intern/voronoi_2d.c
index 65f9994bce779b2f260a4229f2c620f2c162c2c0..936b8a00b77540d43802c8b2d2582b68e5681fcc 100644
--- a/source/blender/blenlib/intern/voronoi_2d.c
+++ b/source/blender/blenlib/intern/voronoi_2d.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/voxel.c b/source/blender/blenlib/intern/voxel.c
index a2b29ce11851638a3b8e0c65f4f1b46161facf55..a361118ffa4ce1448eb4cbb442a096afa9c39437 100644
--- a/source/blender/blenlib/intern/voxel.c
+++ b/source/blender/blenlib/intern/voxel.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/winstuff.c b/source/blender/blenlib/intern/winstuff.c
index 57f3b740a03e8efdd28b46d2a4d0bbd519ac8add..485836eca7202c7738a0c5141f2f047bb1d491af 100644
--- a/source/blender/blenlib/intern/winstuff.c
+++ b/source/blender/blenlib/intern/winstuff.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/intern/winstuff_dir.c b/source/blender/blenlib/intern/winstuff_dir.c
index f8ab3dc8403d2f0719bbf929121a857b35541d17..d5bc84c4c4f97e0a7a31934f55bae4c6ccb1dc9a 100644
--- a/source/blender/blenlib/intern/winstuff_dir.c
+++ b/source/blender/blenlib/intern/winstuff_dir.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bli
diff --git a/source/blender/blenlib/tests/BLI_any_test.cc b/source/blender/blenlib/tests/BLI_any_test.cc
index dc72affd6102b7d08c8d4659675b66114ba8a41d..2830fe8b3200a9ec1c2dec66a49f7d4821245f9b 100644
--- a/source/blender/blenlib/tests/BLI_any_test.cc
+++ b/source/blender/blenlib/tests/BLI_any_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_any.hh"
 #include "BLI_map.hh"
diff --git a/source/blender/blenlib/tests/BLI_array_store_test.cc b/source/blender/blenlib/tests/BLI_array_store_test.cc
index 89aeccdc10554230f7e1b970f82477b398f11d4a..aa7291e1b41dc3a755336f2f51d8a4451bd7293f 100644
--- a/source/blender/blenlib/tests/BLI_array_store_test.cc
+++ b/source/blender/blenlib/tests/BLI_array_store_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_array_test.cc b/source/blender/blenlib/tests/BLI_array_test.cc
index 7d967eca87e0d0b72f4f09aedf4240f0ed702012..6d12b54099a1260390ba46eca2347927d8b0f5f1 100644
--- a/source/blender/blenlib/tests/BLI_array_test.cc
+++ b/source/blender/blenlib/tests/BLI_array_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_array.hh"
 #include "BLI_exception_safety_test_utils.hh"
diff --git a/source/blender/blenlib/tests/BLI_array_utils_test.cc b/source/blender/blenlib/tests/BLI_array_utils_test.cc
index 1bf221c5335a145044bce52c2cf55b25dfa60d4c..5fed84de1b2d74d57d2815067f18f7c40bfd42c3 100644
--- a/source/blender/blenlib/tests/BLI_array_utils_test.cc
+++ b/source/blender/blenlib/tests/BLI_array_utils_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_color_test.cc b/source/blender/blenlib/tests/BLI_color_test.cc
index 5194d8048bf4281b567db50684c77e11334b6f3c..de7e13b155a038c679216e38f34616e18fdeed00 100644
--- a/source/blender/blenlib/tests/BLI_color_test.cc
+++ b/source/blender/blenlib/tests/BLI_color_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_delaunay_2d_test.cc b/source/blender/blenlib/tests/BLI_delaunay_2d_test.cc
index eac3faa6d1510fb73400fe135596164ec33a2406..bdf263d982af296326484cb77152549748989f64 100644
--- a/source/blender/blenlib/tests/BLI_delaunay_2d_test.cc
+++ b/source/blender/blenlib/tests/BLI_delaunay_2d_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_disjoint_set_test.cc b/source/blender/blenlib/tests/BLI_disjoint_set_test.cc
index f30ee610b2adb416be3f08e40755a1abd9e2d808..92b0915e162766933523a754bf9bb409d3a26c65 100644
--- a/source/blender/blenlib/tests/BLI_disjoint_set_test.cc
+++ b/source/blender/blenlib/tests/BLI_disjoint_set_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_disjoint_set.hh"
 #include "BLI_strict_flags.h"
diff --git a/source/blender/blenlib/tests/BLI_edgehash_test.cc b/source/blender/blenlib/tests/BLI_edgehash_test.cc
index f9f0f99daa82a05df66648d58c1914d528bf2115..301fa226016c3a635982541185899d83799bc2f4 100644
--- a/source/blender/blenlib/tests/BLI_edgehash_test.cc
+++ b/source/blender/blenlib/tests/BLI_edgehash_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 #include <algorithm>
diff --git a/source/blender/blenlib/tests/BLI_expr_pylike_eval_test.cc b/source/blender/blenlib/tests/BLI_expr_pylike_eval_test.cc
index e9ca3c68a716ddd93131fdd9b3a6f1e42797d69c..6fcfcaf421a7a6be56a30c30be51c64d278f025f 100644
--- a/source/blender/blenlib/tests/BLI_expr_pylike_eval_test.cc
+++ b/source/blender/blenlib/tests/BLI_expr_pylike_eval_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_fileops_test.cc b/source/blender/blenlib/tests/BLI_fileops_test.cc
index e2a792647dc8dc49e43edb5627212f1e3b179d2b..2a5ecb7d11db22096100368f467976dd2de89532 100644
--- a/source/blender/blenlib/tests/BLI_fileops_test.cc
+++ b/source/blender/blenlib/tests/BLI_fileops_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_fileops.hh"
 
diff --git a/source/blender/blenlib/tests/BLI_function_ref_test.cc b/source/blender/blenlib/tests/BLI_function_ref_test.cc
index 20c9ee5885e26aac92bfb9d9728880691b40b70f..ea6334dd7ed4ed17431ad4d0b6dbef13d8d4239d 100644
--- a/source/blender/blenlib/tests/BLI_function_ref_test.cc
+++ b/source/blender/blenlib/tests/BLI_function_ref_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_function_ref.hh"
 
diff --git a/source/blender/blenlib/tests/BLI_ghash_test.cc b/source/blender/blenlib/tests/BLI_ghash_test.cc
index 1eb29a006db58821d29afe516b4933d33cec50a3..da5207cb3f84e713cb789ae7d3ec1e0edd071fb3 100644
--- a/source/blender/blenlib/tests/BLI_ghash_test.cc
+++ b/source/blender/blenlib/tests/BLI_ghash_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_hash_mm2a_test.cc b/source/blender/blenlib/tests/BLI_hash_mm2a_test.cc
index c6d3265881d3097cacf52ae9c16974d4c2f11838..99bb107840f2050fa1bc11d90b09222f1a19da65 100644
--- a/source/blender/blenlib/tests/BLI_hash_mm2a_test.cc
+++ b/source/blender/blenlib/tests/BLI_hash_mm2a_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_heap_simple_test.cc b/source/blender/blenlib/tests/BLI_heap_simple_test.cc
index 97644fc26abe7d9ec2e7263ee9c0b171af24ee30..818de67740b0733252e70f45612f37fa91c0f098 100644
--- a/source/blender/blenlib/tests/BLI_heap_simple_test.cc
+++ b/source/blender/blenlib/tests/BLI_heap_simple_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 #include <cstring>
diff --git a/source/blender/blenlib/tests/BLI_heap_test.cc b/source/blender/blenlib/tests/BLI_heap_test.cc
index b8fc62e46cabd4e209e7ecde05c3bcb9c616ec20..333a1530b6def5d108687ee23959455edcedd111 100644
--- a/source/blender/blenlib/tests/BLI_heap_test.cc
+++ b/source/blender/blenlib/tests/BLI_heap_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 #include <cstring>
diff --git a/source/blender/blenlib/tests/BLI_index_mask_test.cc b/source/blender/blenlib/tests/BLI_index_mask_test.cc
index 0778d71df010f1bb1f96ae5e30caf946a411af44..179c1c58cc48c2a1463cea16edd4b6457c49aa4b 100644
--- a/source/blender/blenlib/tests/BLI_index_mask_test.cc
+++ b/source/blender/blenlib/tests/BLI_index_mask_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_index_mask.hh"
 #include "testing/testing.h"
diff --git a/source/blender/blenlib/tests/BLI_index_range_test.cc b/source/blender/blenlib/tests/BLI_index_range_test.cc
index 858dc2ee966ac24892f3a8fa445aebb8c5b4e30a..7f0d2e6c22adc250051ea1a56027592e2818c9c5 100644
--- a/source/blender/blenlib/tests/BLI_index_range_test.cc
+++ b/source/blender/blenlib/tests/BLI_index_range_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_index_range.hh"
 #include "BLI_strict_flags.h"
diff --git a/source/blender/blenlib/tests/BLI_inplace_priority_queue_test.cc b/source/blender/blenlib/tests/BLI_inplace_priority_queue_test.cc
index 3adf12f36a743e709d9c2326677d85bebe965d09..74e4346e1cad11bb8d1115f79d247a7f9c617431 100644
--- a/source/blender/blenlib/tests/BLI_inplace_priority_queue_test.cc
+++ b/source/blender/blenlib/tests/BLI_inplace_priority_queue_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_kdopbvh_test.cc b/source/blender/blenlib/tests/BLI_kdopbvh_test.cc
index 04e4c3a16253d9079937ea7a39d477812927833f..756219cd73364eee0c837f14659d15c7b63bdd71 100644
--- a/source/blender/blenlib/tests/BLI_kdopbvh_test.cc
+++ b/source/blender/blenlib/tests/BLI_kdopbvh_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_linear_allocator_test.cc b/source/blender/blenlib/tests/BLI_linear_allocator_test.cc
index 0e0145e592a8ad163963df2519867981e141950d..b67683d0558f18715fa7d37fc81d625503b7e9ab 100644
--- a/source/blender/blenlib/tests/BLI_linear_allocator_test.cc
+++ b/source/blender/blenlib/tests/BLI_linear_allocator_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_linear_allocator.hh"
 #include "BLI_rand.hh"
diff --git a/source/blender/blenlib/tests/BLI_linklist_lockfree_test.cc b/source/blender/blenlib/tests/BLI_linklist_lockfree_test.cc
index e9810aed179e313654d96ba0f76a55985c950259..561ebefb8d23009b9354a46d3cc0040039410d72 100644
--- a/source/blender/blenlib/tests/BLI_linklist_lockfree_test.cc
+++ b/source/blender/blenlib/tests/BLI_linklist_lockfree_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_listbase_test.cc b/source/blender/blenlib/tests/BLI_listbase_test.cc
index 88f597cdf6722656b3f596c12338391250b44c7d..f19b536a82999b8adb1d5965c8c6386296ced3ba 100644
--- a/source/blender/blenlib/tests/BLI_listbase_test.cc
+++ b/source/blender/blenlib/tests/BLI_listbase_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_map_test.cc b/source/blender/blenlib/tests/BLI_map_test.cc
index 679a10e9ce00f53935193a8d6646cf63a9cfc31d..dbbd4843abc75e1f0dcd16187dc726d2762368e8 100644
--- a/source/blender/blenlib/tests/BLI_map_test.cc
+++ b/source/blender/blenlib/tests/BLI_map_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_exception_safety_test_utils.hh"
 #include "BLI_map.hh"
diff --git a/source/blender/blenlib/tests/BLI_math_base_safe_test.cc b/source/blender/blenlib/tests/BLI_math_base_safe_test.cc
index 2e3e083cf9277bb5adad74f6fb3b3b81e69937f2..03f61e499d27ee0b819385bcf6fcf550be865322 100644
--- a/source/blender/blenlib/tests/BLI_math_base_safe_test.cc
+++ b/source/blender/blenlib/tests/BLI_math_base_safe_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_math_base_test.cc b/source/blender/blenlib/tests/BLI_math_base_test.cc
index f354dd4ce236afc04a0f889a94dad06a21c372b8..33acefeeac26a74f05fa2150fa694f07786544be 100644
--- a/source/blender/blenlib/tests/BLI_math_base_test.cc
+++ b/source/blender/blenlib/tests/BLI_math_base_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_math_bits_test.cc b/source/blender/blenlib/tests/BLI_math_bits_test.cc
index 4fa4809beed752d12396f1e343dce4816fcff23f..8dfad94b6266405c30c3e92d0c9b5aff9163e17a 100644
--- a/source/blender/blenlib/tests/BLI_math_bits_test.cc
+++ b/source/blender/blenlib/tests/BLI_math_bits_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_math_bits.h"
 #include "testing/testing.h"
diff --git a/source/blender/blenlib/tests/BLI_math_color_test.cc b/source/blender/blenlib/tests/BLI_math_color_test.cc
index 7df47e74eb00ae133b6ae10754ea31ef556616d1..7f2c0a3f1ca2cd019d36b50d73a868e0ab271b3f 100644
--- a/source/blender/blenlib/tests/BLI_math_color_test.cc
+++ b/source/blender/blenlib/tests/BLI_math_color_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_math_geom_test.cc b/source/blender/blenlib/tests/BLI_math_geom_test.cc
index 44154d491282113cf586fb22422de82e691d2270..47945620c6630878a6cc92e9d2f89ac23c7ae5b1 100644
--- a/source/blender/blenlib/tests/BLI_math_geom_test.cc
+++ b/source/blender/blenlib/tests/BLI_math_geom_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_math_matrix_test.cc b/source/blender/blenlib/tests/BLI_math_matrix_test.cc
index 2a4e0e9861321d175f1ba7d8599b07f609f7c1fb..e429be231b49ee91dc8d43cf617bd6f00f7cbca9 100644
--- a/source/blender/blenlib/tests/BLI_math_matrix_test.cc
+++ b/source/blender/blenlib/tests/BLI_math_matrix_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_math_rotation_test.cc b/source/blender/blenlib/tests/BLI_math_rotation_test.cc
index 5a179bff3d672096c824f51b69042ced69b795ee..a10e441cfbe0089572bfd41e5a1a52e108034fe1 100644
--- a/source/blender/blenlib/tests/BLI_math_rotation_test.cc
+++ b/source/blender/blenlib/tests/BLI_math_rotation_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_math_solvers_test.cc b/source/blender/blenlib/tests/BLI_math_solvers_test.cc
index 08cb8571490da8e00f2e1624372bf0fa8a9bc81c..2f41ee3d139b632ec57bcf7130a267de7b06c1be 100644
--- a/source/blender/blenlib/tests/BLI_math_solvers_test.cc
+++ b/source/blender/blenlib/tests/BLI_math_solvers_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_math_time_test.cc b/source/blender/blenlib/tests/BLI_math_time_test.cc
index 61a504ac2d7162fc28830f765cef72d4432d8086..7f1069edb2ad5530922558734776dd63c97c9ae1 100644
--- a/source/blender/blenlib/tests/BLI_math_time_test.cc
+++ b/source/blender/blenlib/tests/BLI_math_time_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_math_vec_types_test.cc b/source/blender/blenlib/tests/BLI_math_vec_types_test.cc
index c9be404139ec121b2b5a9b18b4392306ec7120e6..07eb6b29a20d713e3972f2dd241ce7ae6432bed4 100644
--- a/source/blender/blenlib/tests/BLI_math_vec_types_test.cc
+++ b/source/blender/blenlib/tests/BLI_math_vec_types_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_math_vector_test.cc b/source/blender/blenlib/tests/BLI_math_vector_test.cc
index 955f02b8065e161ac20c0ab59611dd7dde850c1d..43e329bd77847ac27a669ab100ef62dadfa63642 100644
--- a/source/blender/blenlib/tests/BLI_math_vector_test.cc
+++ b/source/blender/blenlib/tests/BLI_math_vector_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_memiter_test.cc b/source/blender/blenlib/tests/BLI_memiter_test.cc
index 3cc86630005f3c7361357e089bae8c448ddc66a5..17b26d115c40fe631ea7851fe179115eda5776f5 100644
--- a/source/blender/blenlib/tests/BLI_memiter_test.cc
+++ b/source/blender/blenlib/tests/BLI_memiter_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_memory_utils_test.cc b/source/blender/blenlib/tests/BLI_memory_utils_test.cc
index 74e54151a0622c5b35ab200bf637a77700ead93a..993434ddebad5115685d170d031da79fd55fcd8b 100644
--- a/source/blender/blenlib/tests/BLI_memory_utils_test.cc
+++ b/source/blender/blenlib/tests/BLI_memory_utils_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_math_vec_types.hh"
 #include "BLI_memory_utils.hh"
diff --git a/source/blender/blenlib/tests/BLI_mesh_boolean_test.cc b/source/blender/blenlib/tests/BLI_mesh_boolean_test.cc
index 2b8fb3dbea4b3ebaa5e7309b357aa16e67eed9ae..95cf0f17d2eb9dcc18030deeb4ea121fe11a5b45 100644
--- a/source/blender/blenlib/tests/BLI_mesh_boolean_test.cc
+++ b/source/blender/blenlib/tests/BLI_mesh_boolean_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_mesh_intersect_test.cc b/source/blender/blenlib/tests/BLI_mesh_intersect_test.cc
index d2d7659312984021e35449d564ad3f73fc6858d3..4ddf656ff2e3865b3e3817b10856942ae24fe283 100644
--- a/source/blender/blenlib/tests/BLI_mesh_intersect_test.cc
+++ b/source/blender/blenlib/tests/BLI_mesh_intersect_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_multi_value_map_test.cc b/source/blender/blenlib/tests/BLI_multi_value_map_test.cc
index a910f2935d483467ef8b67cfdc22aa204096fa11..874918690e9a65891c0b22318de62132e953b233 100644
--- a/source/blender/blenlib/tests/BLI_multi_value_map_test.cc
+++ b/source/blender/blenlib/tests/BLI_multi_value_map_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_multi_value_map.hh"
 #include "BLI_vector.hh"
diff --git a/source/blender/blenlib/tests/BLI_path_util_test.cc b/source/blender/blenlib/tests/BLI_path_util_test.cc
index 65b02a19960e63df7a130f1e205771da469335ce..bfd297214c0d8d7908506563f2a45660b21ee386 100644
--- a/source/blender/blenlib/tests/BLI_path_util_test.cc
+++ b/source/blender/blenlib/tests/BLI_path_util_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_polyfill_2d_test.cc b/source/blender/blenlib/tests/BLI_polyfill_2d_test.cc
index 8bf5dd0bc9b7d5c1db8a0a2294d31337c0b243c7..3efa35a0048a737a47eacf5a75cb383f828c6785 100644
--- a/source/blender/blenlib/tests/BLI_polyfill_2d_test.cc
+++ b/source/blender/blenlib/tests/BLI_polyfill_2d_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_ressource_strings.h b/source/blender/blenlib/tests/BLI_ressource_strings.h
index b685097eb4808ea7c0543da86257b41e0a4a01aa..44f54610b8e05263d241a63d23d64d4714bfbf46 100644
--- a/source/blender/blenlib/tests/BLI_ressource_strings.h
+++ b/source/blender/blenlib/tests/BLI_ressource_strings.h
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #pragma once
 
diff --git a/source/blender/blenlib/tests/BLI_serialize_test.cc b/source/blender/blenlib/tests/BLI_serialize_test.cc
index 120fcdc3e814e91c7a48ff81ff4af72a1acd3696..7d0ca057df846a26a0ce5642c3969b2afffd2d40 100644
--- a/source/blender/blenlib/tests/BLI_serialize_test.cc
+++ b/source/blender/blenlib/tests/BLI_serialize_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_session_uuid_test.cc b/source/blender/blenlib/tests/BLI_session_uuid_test.cc
index 1a5f17be06cf0a7d4b13c557e1655728a5c4dd26..5ed5ccc7d14a3e51c6e5197ad924cbb11a382b19 100644
--- a/source/blender/blenlib/tests/BLI_session_uuid_test.cc
+++ b/source/blender/blenlib/tests/BLI_session_uuid_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_set_test.cc b/source/blender/blenlib/tests/BLI_set_test.cc
index 28eb4df2ca6a3d065b18132b35b403d5820dd203..5a97b2c7999b4cf4233cebcfc29a6364c742c5b7 100644
--- a/source/blender/blenlib/tests/BLI_set_test.cc
+++ b/source/blender/blenlib/tests/BLI_set_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include <set>
 #include <unordered_set>
diff --git a/source/blender/blenlib/tests/BLI_span_test.cc b/source/blender/blenlib/tests/BLI_span_test.cc
index fb88fb63e5380291777e9ef402c521f54667960a..35fb22b32573ecf76a0905b030b5c01e5816480a 100644
--- a/source/blender/blenlib/tests/BLI_span_test.cc
+++ b/source/blender/blenlib/tests/BLI_span_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_span.hh"
 #include "BLI_strict_flags.h"
diff --git a/source/blender/blenlib/tests/BLI_stack_cxx_test.cc b/source/blender/blenlib/tests/BLI_stack_cxx_test.cc
index b3108381d780c3e808b299316a70ac066d2cca17..0707759666d401b362651d7057addb75bfa3c146 100644
--- a/source/blender/blenlib/tests/BLI_stack_cxx_test.cc
+++ b/source/blender/blenlib/tests/BLI_stack_cxx_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_exception_safety_test_utils.hh"
 #include "BLI_stack.hh"
diff --git a/source/blender/blenlib/tests/BLI_stack_test.cc b/source/blender/blenlib/tests/BLI_stack_test.cc
index a2650e5509dd9624650b1b935cdf6be6c8d48bc7..216c8bd6d552bd69c31d89ad12dfde2ae799471a 100644
--- a/source/blender/blenlib/tests/BLI_stack_test.cc
+++ b/source/blender/blenlib/tests/BLI_stack_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 #include <cstring>
diff --git a/source/blender/blenlib/tests/BLI_string_ref_test.cc b/source/blender/blenlib/tests/BLI_string_ref_test.cc
index 4ecea8031ca833e60980a890b95b6174943c9cdf..c3bb53f39d5d33fb1dae4a5755dadc2cb8d35d05 100644
--- a/source/blender/blenlib/tests/BLI_string_ref_test.cc
+++ b/source/blender/blenlib/tests/BLI_string_ref_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_strict_flags.h"
 #include "BLI_string_ref.hh"
diff --git a/source/blender/blenlib/tests/BLI_string_search_test.cc b/source/blender/blenlib/tests/BLI_string_search_test.cc
index aa1c0b41c44afe56964b5ae5bdf9d79ca8dd7d69..aa6adae8d76aad7f1593e5b7c563ac65c10d224c 100644
--- a/source/blender/blenlib/tests/BLI_string_search_test.cc
+++ b/source/blender/blenlib/tests/BLI_string_search_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_string_test.cc b/source/blender/blenlib/tests/BLI_string_test.cc
index ccd2d01be989339bf077d353138119dc462f5eae..553bd8453e0cdde6647272f1dac4c50218c740d3 100644
--- a/source/blender/blenlib/tests/BLI_string_test.cc
+++ b/source/blender/blenlib/tests/BLI_string_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_string_utf8_test.cc b/source/blender/blenlib/tests/BLI_string_utf8_test.cc
index b25f2310e1ed0d5b4af187353410713e23766423..a2b8e1395101ab877829a05de405df2053be9d64 100644
--- a/source/blender/blenlib/tests/BLI_string_utf8_test.cc
+++ b/source/blender/blenlib/tests/BLI_string_utf8_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_task_graph_test.cc b/source/blender/blenlib/tests/BLI_task_graph_test.cc
index 475e0270da2c0709f85c719789973ef6f1741177..50984b78429d5ed4a8b98f1bd0da12a41143cd26 100644
--- a/source/blender/blenlib/tests/BLI_task_graph_test.cc
+++ b/source/blender/blenlib/tests/BLI_task_graph_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/blenlib/tests/BLI_task_test.cc b/source/blender/blenlib/tests/BLI_task_test.cc
index 1ed732c1f18a961ce1b43016128ebe47126616ed..6a12ff104157096a846bd828bd6a2fc00650ebe4 100644
--- a/source/blender/blenlib/tests/BLI_task_test.cc
+++ b/source/blender/blenlib/tests/BLI_task_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 #include <atomic>
diff --git a/source/blender/blenlib/tests/BLI_uuid_test.cc b/source/blender/blenlib/tests/BLI_uuid_test.cc
index 111c21cb7d146342dcdf56bd6f417d23e2073425..dbcc31e841153565af85f77984021fca29e6f39e 100644
--- a/source/blender/blenlib/tests/BLI_uuid_test.cc
+++ b/source/blender/blenlib/tests/BLI_uuid_test.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #include "testing/testing.h"
 #include <cstring>
 
diff --git a/source/blender/blenlib/tests/BLI_vector_set_test.cc b/source/blender/blenlib/tests/BLI_vector_set_test.cc
index fe3130a846fb2c616f1d9ac3cf02cc75c01e29f6..34685c76e00789f9a59661e70464f2a3e9a6f938 100644
--- a/source/blender/blenlib/tests/BLI_vector_set_test.cc
+++ b/source/blender/blenlib/tests/BLI_vector_set_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_exception_safety_test_utils.hh"
 #include "BLI_strict_flags.h"
diff --git a/source/blender/blenlib/tests/BLI_vector_test.cc b/source/blender/blenlib/tests/BLI_vector_test.cc
index e9393a2b1e5cf1bc47d507b6487471e306c29556..40cda20c395e84774abd85e0c51361cec2025852 100644
--- a/source/blender/blenlib/tests/BLI_vector_test.cc
+++ b/source/blender/blenlib/tests/BLI_vector_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_exception_safety_test_utils.hh"
 #include "BLI_strict_flags.h"
diff --git a/source/blender/blenlib/tests/BLI_virtual_array_test.cc b/source/blender/blenlib/tests/BLI_virtual_array_test.cc
index 62b7b38383132f6a559bcab4b54a78002fd2d3f4..92cad693b4cdb443a8e2f0a01cfe4b5f3f30be75 100644
--- a/source/blender/blenlib/tests/BLI_virtual_array_test.cc
+++ b/source/blender/blenlib/tests/BLI_virtual_array_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_array.hh"
 #include "BLI_strict_flags.h"
diff --git a/source/blender/blenlib/tests/performance/BLI_ghash_performance_test.cc b/source/blender/blenlib/tests/performance/BLI_ghash_performance_test.cc
index 9a374cd0b1f2e276f7b06ffc3d9954ea68e5bd89..eae90f130cd6136f0f7ad46bbcd2b6e33188e5aa 100644
--- a/source/blender/blenlib/tests/performance/BLI_ghash_performance_test.cc
+++ b/source/blender/blenlib/tests/performance/BLI_ghash_performance_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_ressource_strings.h"
 #include "testing/testing.h"
diff --git a/source/blender/blenlib/tests/performance/BLI_task_performance_test.cc b/source/blender/blenlib/tests/performance/BLI_task_performance_test.cc
index dd1a084037b6c5b3e2e76b58402477e9b3974321..33a196569e9ac864a2d692201d4cf5f2e160c837 100644
--- a/source/blender/blenlib/tests/performance/BLI_task_performance_test.cc
+++ b/source/blender/blenlib/tests/performance/BLI_task_performance_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "BLI_ressource_strings.h"
 #include "testing/testing.h"
diff --git a/source/blender/blenlib/tests/performance/CMakeLists.txt b/source/blender/blenlib/tests/performance/CMakeLists.txt
index 036955a4b43d3802d0149a2b9588bef1656d00e0..c4f03255a11324bfa9969b8ca7a9244ad3b0b2bd 100644
--- a/source/blender/blenlib/tests/performance/CMakeLists.txt
+++ b/source/blender/blenlib/tests/performance/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2014, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2014 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/blenloader/BLO_blend_defs.h b/source/blender/blenloader/BLO_blend_defs.h
index 40da63f20e85347995d74dacbc0c15cc2d38b103..c208534191c09dd832d52ffd966af8920a195936 100644
--- a/source/blender/blenloader/BLO_blend_defs.h
+++ b/source/blender/blenloader/BLO_blend_defs.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/blenloader/BLO_blend_validate.h b/source/blender/blenloader/BLO_blend_validate.h
index 3a192284661136a05a17cd7aba5b519229767156..0ce40987adca1ddae57e2a8549625dadffe607a7 100644
--- a/source/blender/blenloader/BLO_blend_validate.h
+++ b/source/blender/blenloader/BLO_blend_validate.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenloader/BLO_read_write.h b/source/blender/blenloader/BLO_read_write.h
index fe8173e335a5a08fe14832828fd8f58b03faf468..8f0f9fae97fb1f58a49b9e3f27a1a16e341024e1 100644
--- a/source/blender/blenloader/BLO_read_write.h
+++ b/source/blender/blenloader/BLO_read_write.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/BLO_readfile.h b/source/blender/blenloader/BLO_readfile.h
index 066b180dcc960752007803737d77a98f71335ae7..c1274de034de54b109c1b3023f5c1c353249ec7a 100644
--- a/source/blender/blenloader/BLO_readfile.h
+++ b/source/blender/blenloader/BLO_readfile.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 #include "BLI_listbase.h"
diff --git a/source/blender/blenloader/BLO_undofile.h b/source/blender/blenloader/BLO_undofile.h
index 772abebeb2624d685424107ed87d31192ec3c097..49f7f62cb9b07aa4168e44d497fde58240777e37 100644
--- a/source/blender/blenloader/BLO_undofile.h
+++ b/source/blender/blenloader/BLO_undofile.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenloader/BLO_writefile.h b/source/blender/blenloader/BLO_writefile.h
index 072f86b48d60d9af12a47b9e248df2a4e301e532..93f1ea5090f98e566fc10d85272017908e89e01d 100644
--- a/source/blender/blenloader/BLO_writefile.h
+++ b/source/blender/blenloader/BLO_writefile.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/blenloader/CMakeLists.txt b/source/blender/blenloader/CMakeLists.txt
index 1ff713160df596d01c834e3f728095819b6b9e81..81ac25c637ff110a4b2ad281deaf7517883e9e27 100644
--- a/source/blender/blenloader/CMakeLists.txt
+++ b/source/blender/blenloader/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/blenloader/intern/blend_validate.c b/source/blender/blenloader/intern/blend_validate.c
index 333f6e341c6866027682d673491a6c9bc1ecca35..10150f560982e3182ceb6c7c27729ae36269d18b 100644
--- a/source/blender/blenloader/intern/blend_validate.c
+++ b/source/blender/blenloader/intern/blend_validate.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/readblenentry.c b/source/blender/blenloader/intern/readblenentry.c
index f01d6afb22d3d18c285220c6b4a5ab61b59f76eb..10b69b67fa1d9ee6c391853c2fde7090818bc27c 100644
--- a/source/blender/blenloader/intern/readblenentry.c
+++ b/source/blender/blenloader/intern/readblenentry.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index 6757177a385bcab0de8fec5ce8ce50dfb16df2f6..84625fea6fc00ddf2d4b808ce7c2814b3ea73664 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/readfile.h b/source/blender/blenloader/intern/readfile.h
index d75aab9ba9cd850ddfc6372cf2934a07f4a22628..4522adb2aef2e282692574304165d8b6ae6346ba 100644
--- a/source/blender/blenloader/intern/readfile.h
+++ b/source/blender/blenloader/intern/readfile.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/readfile_tempload.c b/source/blender/blenloader/intern/readfile_tempload.c
index 311732adf9953d15d1f7d5983d057d3da3117bab..d642dbb50125474bdfb986cf0dae48d7b3c3ddbf 100644
--- a/source/blender/blenloader/intern/readfile_tempload.c
+++ b/source/blender/blenloader/intern/readfile_tempload.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/undofile.c b/source/blender/blenloader/intern/undofile.c
index 638e6a13b01a0787b9be9e901934e613fc90f873..5c4598b85c50880ac95fc563e089e642a9f0cca1 100644
--- a/source/blender/blenloader/intern/undofile.c
+++ b/source/blender/blenloader/intern/undofile.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/versioning_250.c b/source/blender/blenloader/intern/versioning_250.c
index 52737950ea303c0df2435f803d87678852a95a3a..6bf3402eafe79fd00ce95fc856a7bb3d8d246813 100644
--- a/source/blender/blenloader/intern/versioning_250.c
+++ b/source/blender/blenloader/intern/versioning_250.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/versioning_260.c b/source/blender/blenloader/intern/versioning_260.c
index c34b8f735e5f2bf42ceb9aabfef3585570a45ec9..28b934843af4815097641080dc70c08f4095eb7f 100644
--- a/source/blender/blenloader/intern/versioning_260.c
+++ b/source/blender/blenloader/intern/versioning_260.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/versioning_270.c b/source/blender/blenloader/intern/versioning_270.c
index 54d1efab7dd3144f759a8570ffa3248c08f607c0..2ee3ec7d6fe8bfb3072a18cfa4363f85c9931850 100644
--- a/source/blender/blenloader/intern/versioning_270.c
+++ b/source/blender/blenloader/intern/versioning_270.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/versioning_280.c b/source/blender/blenloader/intern/versioning_280.c
index 57105ca5884e2a4dc60250b5f2f09e227676c82a..32dbabf26430d748e35caf48c5af727622d7a525 100644
--- a/source/blender/blenloader/intern/versioning_280.c
+++ b/source/blender/blenloader/intern/versioning_280.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/versioning_290.c b/source/blender/blenloader/intern/versioning_290.c
index 87b5da09a60f2bca7e8b41a89f314c2108457474..ada011f191d01c94f64c5f455ec8e27c6b50932d 100644
--- a/source/blender/blenloader/intern/versioning_290.c
+++ b/source/blender/blenloader/intern/versioning_290.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/versioning_300.c b/source/blender/blenloader/intern/versioning_300.c
index 001dffdca10683e7192302f97451974c4580b8b1..f14029d6555a8b1f91ab7bae0152850e8bd5041a 100644
--- a/source/blender/blenloader/intern/versioning_300.c
+++ b/source/blender/blenloader/intern/versioning_300.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/versioning_common.cc b/source/blender/blenloader/intern/versioning_common.cc
index 575bfd565e674ec362643f2ac1b06841134fa26d..6aac76642d5cd4a79b4b0dd51709f08e4ea6ed6d 100644
--- a/source/blender/blenloader/intern/versioning_common.cc
+++ b/source/blender/blenloader/intern/versioning_common.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/versioning_common.h b/source/blender/blenloader/intern/versioning_common.h
index ea850a052aea7c6b0ca48d07bcd1467d56824c44..939b87823d488230386d24856e9f0d1cba2979b1 100644
--- a/source/blender/blenloader/intern/versioning_common.h
+++ b/source/blender/blenloader/intern/versioning_common.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/versioning_cycles.c b/source/blender/blenloader/intern/versioning_cycles.c
index 1f18405cdf909e08a230c1e2a9fdef56f32ba460..c654972730fd24933768fb18ec3aa235555b16cf 100644
--- a/source/blender/blenloader/intern/versioning_cycles.c
+++ b/source/blender/blenloader/intern/versioning_cycles.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/versioning_defaults.c b/source/blender/blenloader/intern/versioning_defaults.c
index 234951eac9a594f2fc672ad248555497b8043e1c..000f132adcba089cc050977af103869dfb40dfa8 100644
--- a/source/blender/blenloader/intern/versioning_defaults.c
+++ b/source/blender/blenloader/intern/versioning_defaults.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/versioning_dna.c b/source/blender/blenloader/intern/versioning_dna.c
index 0a97eedb9938f9ade646d69a4a0db56d271a2214..c31e28d92dd91c23c69bbf1940f35cfa7d3f1baa 100644
--- a/source/blender/blenloader/intern/versioning_dna.c
+++ b/source/blender/blenloader/intern/versioning_dna.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/versioning_legacy.c b/source/blender/blenloader/intern/versioning_legacy.c
index 94720ad0b0af94964f96977540e4443d28593ea8..cd4efa95d5edcb75b6da4953d26008fddbb2d43c 100644
--- a/source/blender/blenloader/intern/versioning_legacy.c
+++ b/source/blender/blenloader/intern/versioning_legacy.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/versioning_userdef.c b/source/blender/blenloader/intern/versioning_userdef.c
index 520059649e65789d987243fe908f0c2567ffa80b..d1a1436f74cc57441cd0ebe22eb331aa6a4eb813 100644
--- a/source/blender/blenloader/intern/versioning_userdef.c
+++ b/source/blender/blenloader/intern/versioning_userdef.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/intern/writefile.c b/source/blender/blenloader/intern/writefile.c
index 4eda63d08171406ce6c7b457bfe6754898294a51..495054923f9b8786b25cb787116b5d32dcc9e597 100644
--- a/source/blender/blenloader/intern/writefile.c
+++ b/source/blender/blenloader/intern/writefile.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup blenloader
diff --git a/source/blender/blenloader/tests/blendfile_load_test.cc b/source/blender/blenloader/tests/blendfile_load_test.cc
index 2ba3e3fcd8819e76eea1c3a0bab4e134dd1f958e..00f596adc33e360ba347b1ceee4a5a7a29c2ac33 100644
--- a/source/blender/blenloader/tests/blendfile_load_test.cc
+++ b/source/blender/blenloader/tests/blendfile_load_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 #include "blendfile_loading_base_test.h"
 
 class BlendfileLoadingTest : public BlendfileLoadingBaseTest {
diff --git a/source/blender/blenloader/tests/blendfile_loading_base_test.cc b/source/blender/blenloader/tests/blendfile_loading_base_test.cc
index 7a8afbcb22708558655749ba705f0cec0c8a4459..af570aa9d4b1c93269dca13ebd349c49cdb653c2 100644
--- a/source/blender/blenloader/tests/blendfile_loading_base_test.cc
+++ b/source/blender/blenloader/tests/blendfile_loading_base_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 #include "blendfile_loading_base_test.h"
 
 #include "MEM_guardedalloc.h"
diff --git a/source/blender/blenloader/tests/blendfile_loading_base_test.h b/source/blender/blenloader/tests/blendfile_loading_base_test.h
index d352aecfe41d37dcfa86bed0da073ffad4293322..86fa51fdfccfbe08f90169cfc82024642a215d71 100644
--- a/source/blender/blenloader/tests/blendfile_loading_base_test.h
+++ b/source/blender/blenloader/tests/blendfile_loading_base_test.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 by Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/blentranslation/BLT_lang.h b/source/blender/blentranslation/BLT_lang.h
index 1a0981613a1f26ab2db53e1e3292db143ca6c33e..a3727345e0ba31552ad4521048976f71ae9a8020 100644
--- a/source/blender/blentranslation/BLT_lang.h
+++ b/source/blender/blentranslation/BLT_lang.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blt
diff --git a/source/blender/blentranslation/BLT_translation.h b/source/blender/blentranslation/BLT_translation.h
index 379ff923229ca23a554ce37bade08fba84aaf02e..a7873d5d2d03d9ab341dee524a4de2bc24acb68b 100644
--- a/source/blender/blentranslation/BLT_translation.h
+++ b/source/blender/blentranslation/BLT_translation.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blt
diff --git a/source/blender/blentranslation/CMakeLists.txt b/source/blender/blentranslation/CMakeLists.txt
index bfb812ac64ddbd8254f7a9ab1e82b2fa4b3099df..027a4668d389a1b116fd72624f34b2c100535048 100644
--- a/source/blender/blentranslation/CMakeLists.txt
+++ b/source/blender/blentranslation/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2008, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2008 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/blentranslation/intern/blt_lang.c b/source/blender/blentranslation/intern/blt_lang.c
index 01f7574bd34532654d80e176f3c77078e003b6e9..b015057ad2dc3b81f0ad24c6efc5e649f2fee078 100644
--- a/source/blender/blentranslation/intern/blt_lang.c
+++ b/source/blender/blentranslation/intern/blt_lang.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blt
diff --git a/source/blender/blentranslation/intern/blt_translation.c b/source/blender/blentranslation/intern/blt_translation.c
index 89a2f6c3ac0e3fde365b021d66a35f9aee7a88e2..87bb4251718d8bfca19c2223a934024f66ed8057 100644
--- a/source/blender/blentranslation/intern/blt_translation.c
+++ b/source/blender/blentranslation/intern/blt_translation.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup blt
diff --git a/source/blender/blentranslation/msgfmt/CMakeLists.txt b/source/blender/blentranslation/msgfmt/CMakeLists.txt
index a535d5b8e2da36668ab8ba9b2fe4184cbb4d993f..7b95bf210d7c685ca6fb0aee7a8bc8b345c1eece 100644
--- a/source/blender/blentranslation/msgfmt/CMakeLists.txt
+++ b/source/blender/blentranslation/msgfmt/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2017, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2017 Blender Foundation. All rights reserved.
 
 # -----------------------------------------------------------------------------
 # Build msgfmt executable
diff --git a/source/blender/blentranslation/msgfmt/msgfmt.c b/source/blender/blentranslation/msgfmt/msgfmt.c
index 05c71fd48523c3985f1c26da1bb8b552b32bea64..e6d5c2b79f7180b52acf1888c2665b0c7acbf55e 100644
--- a/source/blender/blentranslation/msgfmt/msgfmt.c
+++ b/source/blender/blentranslation/msgfmt/msgfmt.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /*
  * Based on C++ version by Sergey Sharybin <sergey.vfx@gmail.com>.
diff --git a/source/blender/bmesh/CMakeLists.txt b/source/blender/bmesh/CMakeLists.txt
index a61327238fe748e07ffb763e5a38882ea34c06ea..77b0781bcb628bc3f98f91934cda4b5fd85db518 100644
--- a/source/blender/bmesh/CMakeLists.txt
+++ b/source/blender/bmesh/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/bmesh/bmesh.h b/source/blender/bmesh/bmesh.h
index fc97c55091a3b6d26a5aba2d3ac3b7d9ee525754..2833105e5a4a060e0521087596a38d8da8b21ee0 100644
--- a/source/blender/bmesh/bmesh.h
+++ b/source/blender/bmesh/bmesh.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/bmesh_class.h b/source/blender/bmesh/bmesh_class.h
index 82c76c8ae4f4bd8511dcd4807c9c53311e9b635c..b9491a4913b860a709464ef902276423572b4fe1 100644
--- a/source/blender/bmesh/bmesh_class.h
+++ b/source/blender/bmesh/bmesh_class.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/bmesh_tools.h b/source/blender/bmesh/bmesh_tools.h
index daecbac63ab351ff0addc2284d21f8b1561ee883..62ef48b84e743009e513ed482d715ffa820c484e 100644
--- a/source/blender/bmesh/bmesh_tools.h
+++ b/source/blender/bmesh/bmesh_tools.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_callback_generic.c b/source/blender/bmesh/intern/bmesh_callback_generic.c
index 27e808895cdc4a472fb4121ac811fb9cc19f7a7e..a1a714a945c66f79818d720b4f47b35f76f4b307 100644
--- a/source/blender/bmesh/intern/bmesh_callback_generic.c
+++ b/source/blender/bmesh/intern/bmesh_callback_generic.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_callback_generic.h b/source/blender/bmesh/intern/bmesh_callback_generic.h
index 3f3a48fd5464768c0d4dfc1883683b848ff98010..36dfc7d3d9fe9657bc1dbf4c09e9f56580e3e71b 100644
--- a/source/blender/bmesh/intern/bmesh_callback_generic.h
+++ b/source/blender/bmesh/intern/bmesh_callback_generic.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_construct.c b/source/blender/bmesh/intern/bmesh_construct.c
index a127089ad2c6c18337da592b31a8eba6166fa936..ff8506f1868821a60ce52b94c2ce1254b443370d 100644
--- a/source/blender/bmesh/intern/bmesh_construct.c
+++ b/source/blender/bmesh/intern/bmesh_construct.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_construct.h b/source/blender/bmesh/intern/bmesh_construct.h
index 008219165a8258e520513050f74e131fe24fee17..1851cf58d4ea0b3a814a3b383df86c6477a3726c 100644
--- a/source/blender/bmesh/intern/bmesh_construct.h
+++ b/source/blender/bmesh/intern/bmesh_construct.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_core.c b/source/blender/bmesh/intern/bmesh_core.c
index 1d7d10de96fb1f7aa371c9ab73b49211ec60958c..d6bf556f14b02bcb964e8e513e9f56b76b8ea3a0 100644
--- a/source/blender/bmesh/intern/bmesh_core.c
+++ b/source/blender/bmesh/intern/bmesh_core.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_core.h b/source/blender/bmesh/intern/bmesh_core.h
index a885df51bd34beddab1d2df448841a7dc6cfcf18..b1cf4929b7e8be219d71dd4aa665103155382c2c 100644
--- a/source/blender/bmesh/intern/bmesh_core.h
+++ b/source/blender/bmesh/intern/bmesh_core.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_delete.c b/source/blender/bmesh/intern/bmesh_delete.c
index ae93795d51cf045065764ba2fb614cb4b6d1506b..15f340def44129a5e5f7fb62fe240b878ea0593f 100644
--- a/source/blender/bmesh/intern/bmesh_delete.c
+++ b/source/blender/bmesh/intern/bmesh_delete.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_delete.h b/source/blender/bmesh/intern/bmesh_delete.h
index 068c35f6dc7def4f6130d4221c7ff3f85bf32a0c..7e2edc54224384d90c7db5c1af6cbc15e8dbbf8a 100644
--- a/source/blender/bmesh/intern/bmesh_delete.h
+++ b/source/blender/bmesh/intern/bmesh_delete.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_edgeloop.c b/source/blender/bmesh/intern/bmesh_edgeloop.c
index 3c79d2bce0421d0580a03c501d616e70beef00c4..ee8c22df630f4438c1090d116f78f7ef5c5e7d71 100644
--- a/source/blender/bmesh/intern/bmesh_edgeloop.c
+++ b/source/blender/bmesh/intern/bmesh_edgeloop.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 by Campbell Barton.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 by Campbell Barton. All rights reserved. */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_edgeloop.h b/source/blender/bmesh/intern/bmesh_edgeloop.h
index 9dc1e64dd4650eafe47c2dd573a06ccc7b477140..7e157c30a3d923a15036055913790a7a8bc1e298 100644
--- a/source/blender/bmesh/intern/bmesh_edgeloop.h
+++ b/source/blender/bmesh/intern/bmesh_edgeloop.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 by Campbell Barton.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 by Campbell Barton. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_error.h b/source/blender/bmesh/intern/bmesh_error.h
index 68ec3fe3ee8d25b6680f19073c65747784c6f00a..41c9c02aae49e12330f5edcc936c8a86ca803b4b 100644
--- a/source/blender/bmesh/intern/bmesh_error.h
+++ b/source/blender/bmesh/intern/bmesh_error.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_inline.h b/source/blender/bmesh/intern/bmesh_inline.h
index 4350b4d04edc307256e2a8af649178d0a15cf582..0fe89e79721558438eee1c5e38e81d7d78755ff6 100644
--- a/source/blender/bmesh/intern/bmesh_inline.h
+++ b/source/blender/bmesh/intern/bmesh_inline.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_interp.c b/source/blender/bmesh/intern/bmesh_interp.c
index a1bcd8e6258287e1fdc762bdc32d353d4d008124..2f5827bdc4c9b7695a53b4ed0baa1d69fdddb7a9 100644
--- a/source/blender/bmesh/intern/bmesh_interp.c
+++ b/source/blender/bmesh/intern/bmesh_interp.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_interp.h b/source/blender/bmesh/intern/bmesh_interp.h
index bf5b5bd09f4de11a79c26854f3014e6fbd41634e..a2f1dfc706d3103b1a580e87f08dbc629f61c01c 100644
--- a/source/blender/bmesh/intern/bmesh_interp.h
+++ b/source/blender/bmesh/intern/bmesh_interp.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_iterators.c b/source/blender/bmesh/intern/bmesh_iterators.c
index 6a27e54c6a6ec121975976650c4d0dbcc242ecae..9e98103fd5aa7e003b23bc634074ee3e4acf3b61 100644
--- a/source/blender/bmesh/intern/bmesh_iterators.c
+++ b/source/blender/bmesh/intern/bmesh_iterators.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_iterators.h b/source/blender/bmesh/intern/bmesh_iterators.h
index 1c9b322ef75851ca43b637e00b6f479d874cd2e0..9132450d1f767217f0f710e574800faf24b720d8 100644
--- a/source/blender/bmesh/intern/bmesh_iterators.h
+++ b/source/blender/bmesh/intern/bmesh_iterators.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_iterators_inline.h b/source/blender/bmesh/intern/bmesh_iterators_inline.h
index 81b6a58e58bf59e32a9c3198b7afa0157b8e7a51..0fdc2f39ee8891a64cc5c83644bf645857e1ea39 100644
--- a/source/blender/bmesh/intern/bmesh_iterators_inline.h
+++ b/source/blender/bmesh/intern/bmesh_iterators_inline.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_log.c b/source/blender/bmesh/intern/bmesh_log.c
index edcd9159520c36756823e9380c6aa10391a3115b..a398f14b3127b04ed8b9587a4744a9c839920e5d 100644
--- a/source/blender/bmesh/intern/bmesh_log.c
+++ b/source/blender/bmesh/intern/bmesh_log.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_log.h b/source/blender/bmesh/intern/bmesh_log.h
index 935cb5aba286fe83f29077d2c20e2406c34258e3..189aa97509fcd137d2ec429fe34cfa658c983af5 100644
--- a/source/blender/bmesh/intern/bmesh_log.h
+++ b/source/blender/bmesh/intern/bmesh_log.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_marking.c b/source/blender/bmesh/intern/bmesh_marking.c
index b756aa25edd954d5e90a01791f311881566d8eb3..f348cd5808548346272fcb015a827d9deca53d6b 100644
--- a/source/blender/bmesh/intern/bmesh_marking.c
+++ b/source/blender/bmesh/intern/bmesh_marking.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_marking.h b/source/blender/bmesh/intern/bmesh_marking.h
index 01c3291b525bb33619e1b15dc7e37ee522b723ae..8bee9220aa2acb779c28c40838f7e73d64ee70b9 100644
--- a/source/blender/bmesh/intern/bmesh_marking.h
+++ b/source/blender/bmesh/intern/bmesh_marking.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_mesh.c b/source/blender/bmesh/intern/bmesh_mesh.c
index b65f6e4c872fcca102deca1222e4897455ef5650..7dba854b9ef0b63f12a4ac0199cf7792e144d0be 100644
--- a/source/blender/bmesh/intern/bmesh_mesh.c
+++ b/source/blender/bmesh/intern/bmesh_mesh.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_mesh.h b/source/blender/bmesh/intern/bmesh_mesh.h
index 94615d558fa1a6f612d96656a135337fda121d74..0d16cc9dffd78407e7f35f6dc79df2c175eda132 100644
--- a/source/blender/bmesh/intern/bmesh_mesh.h
+++ b/source/blender/bmesh/intern/bmesh_mesh.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_mesh_convert.cc b/source/blender/bmesh/intern/bmesh_mesh_convert.cc
index d6c642ff80bfcca5ffcccda7347d00cf6c38ff04..ae6b4da600359cd7bd01166b99b4eb396f482572 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_convert.cc
+++ b/source/blender/bmesh/intern/bmesh_mesh_convert.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_mesh_convert.h b/source/blender/bmesh/intern/bmesh_mesh_convert.h
index 07ffc8b43df43d9c99257ba694439b92c1d74648..8e87fc86b6d5b5932c183d244b330e8e24673af2 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_convert.h
+++ b/source/blender/bmesh/intern/bmesh_mesh_convert.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_mesh_debug.c b/source/blender/bmesh/intern/bmesh_mesh_debug.c
index 81a11df13f268ce91dfc4527601b46efae0d4639..f66f8d76b178661450529314af158481918af61a 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_debug.c
+++ b/source/blender/bmesh/intern/bmesh_mesh_debug.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/bmesh/intern/bmesh_mesh_debug.h b/source/blender/bmesh/intern/bmesh_mesh_debug.h
index e903b627419e0c0390f7f57e3f1230435cfd5284..dbbb22b8eac35c9fb2b5a67a3989f0066d9eabec 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_debug.h
+++ b/source/blender/bmesh/intern/bmesh_mesh_debug.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_mesh_duplicate.c b/source/blender/bmesh/intern/bmesh_mesh_duplicate.c
index db21e50bb717f3e5000824c4c9934eaa0ee77601..cb6d086169655127d7076e0921109e4cb3cd6752 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_duplicate.c
+++ b/source/blender/bmesh/intern/bmesh_mesh_duplicate.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_mesh_duplicate.h b/source/blender/bmesh/intern/bmesh_mesh_duplicate.h
index d15ef8f4ab243e64493edd149a7b1a40e65d3e9d..ba503b1cf5bb2c1419af0a0c0341901976b34661 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_duplicate.h
+++ b/source/blender/bmesh/intern/bmesh_mesh_duplicate.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_mesh_normals.c b/source/blender/bmesh/intern/bmesh_mesh_normals.c
index 34c07b4f310b27ac141b17ff727ec136abc6630e..d61b2c5bb43a2997c48328b05b5cfaa4308c722e 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_normals.c
+++ b/source/blender/bmesh/intern/bmesh_mesh_normals.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_mesh_normals.h b/source/blender/bmesh/intern/bmesh_mesh_normals.h
index d9b9a88b10d36c05e785a751743276b70b955334..bbb18ecdbd24d9ea973acb9ebf29baf97e6a4d9d 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_normals.h
+++ b/source/blender/bmesh/intern/bmesh_mesh_normals.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_mesh_partial_update.c b/source/blender/bmesh/intern/bmesh_mesh_partial_update.c
index ad9b8414525f305df30961293ef0039b62e5d192..757ca8f19b6d53fdba0f2493a3adb973524d6232 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_partial_update.c
+++ b/source/blender/bmesh/intern/bmesh_mesh_partial_update.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_mesh_partial_update.h b/source/blender/bmesh/intern/bmesh_mesh_partial_update.h
index a280acb46241c2d07c0e7cd59eb24f5c348dc78b..dd564f0a512d8b9b8da927be77f6a50984083e26 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_partial_update.h
+++ b/source/blender/bmesh/intern/bmesh_mesh_partial_update.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_mesh_tessellate.c b/source/blender/bmesh/intern/bmesh_mesh_tessellate.c
index 94d8901edf87e804b5ea22b6fb49b8dd9bebd351..8d401ae1e5c3eff4d10362f3018ddeadc767e9f6 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_tessellate.c
+++ b/source/blender/bmesh/intern/bmesh_mesh_tessellate.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_mesh_tessellate.h b/source/blender/bmesh/intern/bmesh_mesh_tessellate.h
index 91eac6bc6fc0d2e30e35b6bb72219052e98e96c4..afac03fc3c3682860072cd555720d01dd595e874 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_tessellate.h
+++ b/source/blender/bmesh/intern/bmesh_mesh_tessellate.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_mesh_validate.c b/source/blender/bmesh/intern/bmesh_mesh_validate.c
index 3145ceceafd6013f17680a215b617fceaf29df6a..34df036fc338e587dc791fd3e9105eba20945c66 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_validate.c
+++ b/source/blender/bmesh/intern/bmesh_mesh_validate.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_mesh_validate.h b/source/blender/bmesh/intern/bmesh_mesh_validate.h
index 203c8a89c550412936113844bde4c36353ee6beb..68bf35a18abdf6cb90bc2d9727a88513673af7d0 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_validate.h
+++ b/source/blender/bmesh/intern/bmesh_mesh_validate.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_mods.c b/source/blender/bmesh/intern/bmesh_mods.c
index 0a3857a6e0aea9a4755013fcaa37bc3eeb3720ca..70710edea5c5d5b0a8e02b40f96454ed7c4dbd5f 100644
--- a/source/blender/bmesh/intern/bmesh_mods.c
+++ b/source/blender/bmesh/intern/bmesh_mods.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_mods.h b/source/blender/bmesh/intern/bmesh_mods.h
index 4e8a8a14a6ad300393693587433ce3c11f1aa18b..27ea19a8a7f0df79d9816f5167e5b57e29fa89ae 100644
--- a/source/blender/bmesh/intern/bmesh_mods.h
+++ b/source/blender/bmesh/intern/bmesh_mods.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_opdefines.c b/source/blender/bmesh/intern/bmesh_opdefines.c
index 85ea27b0f4e152a0d6d26da60e4303b5ea951ca5..276a8abb731a85ac28d32d6f5037a420ec4a1515 100644
--- a/source/blender/bmesh/intern/bmesh_opdefines.c
+++ b/source/blender/bmesh/intern/bmesh_opdefines.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_operator_api.h b/source/blender/bmesh/intern/bmesh_operator_api.h
index ef3c2cf8f17ed0fbb3462aa52c18da77d3afb0bb..24b86c71452a34fd86f6459d594a570a4a9eecb8 100644
--- a/source/blender/bmesh/intern/bmesh_operator_api.h
+++ b/source/blender/bmesh/intern/bmesh_operator_api.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_operator_api_inline.h b/source/blender/bmesh/intern/bmesh_operator_api_inline.h
index 85701a76433fd443c96a0983b9dc0de54d5633a5..3cb4923eb784a4de887e12992c1b13e53c2b4f8e 100644
--- a/source/blender/bmesh/intern/bmesh_operator_api_inline.h
+++ b/source/blender/bmesh/intern/bmesh_operator_api_inline.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_operators.c b/source/blender/bmesh/intern/bmesh_operators.c
index dd35f0feee750c37220464d1c6482672c55598f5..ddecab23ed4c76b4ef1115d4e01d9134799750bc 100644
--- a/source/blender/bmesh/intern/bmesh_operators.c
+++ b/source/blender/bmesh/intern/bmesh_operators.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_operators.h b/source/blender/bmesh/intern/bmesh_operators.h
index 900844af4e5d9e1d2f2510378d3ca0355569b70d..59a659dcad054e289930be22b8daf2ddf21466f7 100644
--- a/source/blender/bmesh/intern/bmesh_operators.h
+++ b/source/blender/bmesh/intern/bmesh_operators.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_operators_private.h b/source/blender/bmesh/intern/bmesh_operators_private.h
index 1c53c3d5c89a5cffb806b1ce514c87249e448dca..0f628c04d98544c046f534fcfec677930f3735c5 100644
--- a/source/blender/bmesh/intern/bmesh_operators_private.h
+++ b/source/blender/bmesh/intern/bmesh_operators_private.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_polygon.c b/source/blender/bmesh/intern/bmesh_polygon.c
index e7280303c2621e6007ce10023b267c9075b0e742..9ea16c8b61c79ed6a2470a1b848a71f9f731a94c 100644
--- a/source/blender/bmesh/intern/bmesh_polygon.c
+++ b/source/blender/bmesh/intern/bmesh_polygon.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_polygon.h b/source/blender/bmesh/intern/bmesh_polygon.h
index 2123410c73888f5a3ab19c519317d9cd3c13d459..048dd0c732ca53c0f27660919f120152a649da15 100644
--- a/source/blender/bmesh/intern/bmesh_polygon.h
+++ b/source/blender/bmesh/intern/bmesh_polygon.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_polygon_edgenet.c b/source/blender/bmesh/intern/bmesh_polygon_edgenet.c
index 24d9c1940542b90086af8c69e2cb0f9b891246af..29bd066f33cc91867df7c2be709734a20b4389a3 100644
--- a/source/blender/bmesh/intern/bmesh_polygon_edgenet.c
+++ b/source/blender/bmesh/intern/bmesh_polygon_edgenet.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_polygon_edgenet.h b/source/blender/bmesh/intern/bmesh_polygon_edgenet.h
index 626df9fb46a5baedc039231cca59fc5e22837764..07f79035475015a0fa700a4090cf45a56002a6c6 100644
--- a/source/blender/bmesh/intern/bmesh_polygon_edgenet.h
+++ b/source/blender/bmesh/intern/bmesh_polygon_edgenet.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_private.h b/source/blender/bmesh/intern/bmesh_private.h
index 4b3c4cbff82b79d49a179b30b5bb93f9be70c279..2225841e278ba66c37fc066aea9aea2812e57930 100644
--- a/source/blender/bmesh/intern/bmesh_private.h
+++ b/source/blender/bmesh/intern/bmesh_private.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_query.c b/source/blender/bmesh/intern/bmesh_query.c
index fe2142670a266c88ea7dc31d48079d3fd641d908..45a42c29d84af1bcc6a451cea1aeaf2620ba6beb 100644
--- a/source/blender/bmesh/intern/bmesh_query.c
+++ b/source/blender/bmesh/intern/bmesh_query.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_query.h b/source/blender/bmesh/intern/bmesh_query.h
index 841549945ca79f630dff55f04d5ee8144d13b468..85eadd3076ac0d375e20ae234601dac6e7616f30 100644
--- a/source/blender/bmesh/intern/bmesh_query.h
+++ b/source/blender/bmesh/intern/bmesh_query.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_query_inline.h b/source/blender/bmesh/intern/bmesh_query_inline.h
index 8b12ccace20130fba110126db89d7dab8ab70a3a..b0e75bbd65b3eaa889705d3b461fb4bcd133cbd4 100644
--- a/source/blender/bmesh/intern/bmesh_query_inline.h
+++ b/source/blender/bmesh/intern/bmesh_query_inline.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_query_uv.c b/source/blender/bmesh/intern/bmesh_query_uv.c
index f069613f5b3fc3de6abd48d1f7e4d3c5ceb0e4d5..1225543cd06e131881080c6a8e6ac2030fd4b371 100644
--- a/source/blender/bmesh/intern/bmesh_query_uv.c
+++ b/source/blender/bmesh/intern/bmesh_query_uv.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_query_uv.h b/source/blender/bmesh/intern/bmesh_query_uv.h
index 4399f8b4c4d25662085bfacd39a94259b989c6dc..2b0833f9185c223b34d3dcc604b3282a92b1e250 100644
--- a/source/blender/bmesh/intern/bmesh_query_uv.h
+++ b/source/blender/bmesh/intern/bmesh_query_uv.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_structure.c b/source/blender/bmesh/intern/bmesh_structure.c
index 08b0920c11573680922ce7f2308ab20b2aa3ec23..6baaeb43f1afba41ddaf990804419749f673ed72 100644
--- a/source/blender/bmesh/intern/bmesh_structure.c
+++ b/source/blender/bmesh/intern/bmesh_structure.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_structure.h b/source/blender/bmesh/intern/bmesh_structure.h
index 8a9c1f114f9357028d7559ceb09ac43b9ae9529e..06234318627ed5e4da11c26d109ea19f90b2ad0b 100644
--- a/source/blender/bmesh/intern/bmesh_structure.h
+++ b/source/blender/bmesh/intern/bmesh_structure.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_structure_inline.h b/source/blender/bmesh/intern/bmesh_structure_inline.h
index 85a84dde4adf8ea7e91de34d84b2b00dd4558440..e753318be46e6d40f8852a869c407984fc3b9e15 100644
--- a/source/blender/bmesh/intern/bmesh_structure_inline.h
+++ b/source/blender/bmesh/intern/bmesh_structure_inline.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_walkers.c b/source/blender/bmesh/intern/bmesh_walkers.c
index 0e13c4c8128e813bb013119d3d98d39926b697a8..3c3c5cb62326bd607eaf902559d18cd09fd5b6f8 100644
--- a/source/blender/bmesh/intern/bmesh_walkers.c
+++ b/source/blender/bmesh/intern/bmesh_walkers.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_walkers.h b/source/blender/bmesh/intern/bmesh_walkers.h
index f36f77ce009d6e78bf7051d90b3dcf9ff8ab8cb5..f6907366de009e74b99ddcb2c2fb11b79524b96e 100644
--- a/source/blender/bmesh/intern/bmesh_walkers.h
+++ b/source/blender/bmesh/intern/bmesh_walkers.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/intern/bmesh_walkers_impl.c b/source/blender/bmesh/intern/bmesh_walkers_impl.c
index 15d3a6a6a531dff65f4438f8af7d62d5a8537e5d..bd12287e63efe727785df37543c602a94ab3bdb7 100644
--- a/source/blender/bmesh/intern/bmesh_walkers_impl.c
+++ b/source/blender/bmesh/intern/bmesh_walkers_impl.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/intern/bmesh_walkers_private.h b/source/blender/bmesh/intern/bmesh_walkers_private.h
index 2da4f290c7620e6a05d14927245b33e938070064..a998151de48b536498bd7856d4ba680921392e5b 100644
--- a/source/blender/bmesh/intern/bmesh_walkers_private.h
+++ b/source/blender/bmesh/intern/bmesh_walkers_private.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/operators/bmo_beautify.c b/source/blender/bmesh/operators/bmo_beautify.c
index a72ff6363ed6ef6121f72c5947d3738f0c46dba9..e21fb5a1f7ef125d375e768555b3a94d1f2c2682 100644
--- a/source/blender/bmesh/operators/bmo_beautify.c
+++ b/source/blender/bmesh/operators/bmo_beautify.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_bevel.c b/source/blender/bmesh/operators/bmo_bevel.c
index 4e708b595e0b261d2f1752349dc927606061bb70..ef53f8bd9d960c28cf9684b31d17636fd044a10b 100644
--- a/source/blender/bmesh/operators/bmo_bevel.c
+++ b/source/blender/bmesh/operators/bmo_bevel.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_bisect_plane.c b/source/blender/bmesh/operators/bmo_bisect_plane.c
index 6296694f121fcd46b82911a1cd3ec68cb2c08423..e7e130165db6820ecb22124763eb33390455e58b 100644
--- a/source/blender/bmesh/operators/bmo_bisect_plane.c
+++ b/source/blender/bmesh/operators/bmo_bisect_plane.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_bridge.c b/source/blender/bmesh/operators/bmo_bridge.c
index fb913d4f19f9d446bf3d93b858284b4e12f33a87..1a2c52a321f924250eb49c616a7ce35dd0aa35bc 100644
--- a/source/blender/bmesh/operators/bmo_bridge.c
+++ b/source/blender/bmesh/operators/bmo_bridge.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_connect.c b/source/blender/bmesh/operators/bmo_connect.c
index abc040f7564f0c57465af11ac8cef534380302b7..42de425103e001f066255ca5598a328506ca98c5 100644
--- a/source/blender/bmesh/operators/bmo_connect.c
+++ b/source/blender/bmesh/operators/bmo_connect.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_connect_concave.c b/source/blender/bmesh/operators/bmo_connect_concave.c
index 15ed930afd8e4c0f2edc9d13eede166a68b56340..76e25837f29ddecb5afe8285669653d9989b76b1 100644
--- a/source/blender/bmesh/operators/bmo_connect_concave.c
+++ b/source/blender/bmesh/operators/bmo_connect_concave.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_connect_nonplanar.c b/source/blender/bmesh/operators/bmo_connect_nonplanar.c
index e0c5109430ddcac8176502ddff39999b9788d950..ac88ffb9065e18804f9842e5226ec88f6be23402 100644
--- a/source/blender/bmesh/operators/bmo_connect_nonplanar.c
+++ b/source/blender/bmesh/operators/bmo_connect_nonplanar.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_connect_pair.c b/source/blender/bmesh/operators/bmo_connect_pair.c
index 29fd8d9094b54553e8725ab058073e8dd03d1880..e91dab3dd6fad8cb727449de6ebc4a0b829e9e83 100644
--- a/source/blender/bmesh/operators/bmo_connect_pair.c
+++ b/source/blender/bmesh/operators/bmo_connect_pair.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_create.c b/source/blender/bmesh/operators/bmo_create.c
index 6bb2830c71b836880ec35c52cbb3db4815a04222..a809fe6ee3de199c09ca8f9104561df08ab8d807 100644
--- a/source/blender/bmesh/operators/bmo_create.c
+++ b/source/blender/bmesh/operators/bmo_create.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_dissolve.c b/source/blender/bmesh/operators/bmo_dissolve.c
index 82d277ec3afc0d28e05df92ea5e7448032008094..ab468200e8deeec48c6c868c06a3b1a99015d38b 100644
--- a/source/blender/bmesh/operators/bmo_dissolve.c
+++ b/source/blender/bmesh/operators/bmo_dissolve.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_dupe.c b/source/blender/bmesh/operators/bmo_dupe.c
index d8b30fc1a45ae9ac065f4f9692c7f19e56815ab9..1ed9d763e8cd8ec0cea0cbb648e891e653b16f5d 100644
--- a/source/blender/bmesh/operators/bmo_dupe.c
+++ b/source/blender/bmesh/operators/bmo_dupe.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_edgenet.c b/source/blender/bmesh/operators/bmo_edgenet.c
index 7f70c452af3fcb22095f02e8d0edbf7384acdb2c..8083a06e0b51e5ccc51345c0008e5374196da74a 100644
--- a/source/blender/bmesh/operators/bmo_edgenet.c
+++ b/source/blender/bmesh/operators/bmo_edgenet.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_extrude.c b/source/blender/bmesh/operators/bmo_extrude.c
index 0cedc2324f267cd6a932ee68be920dc4ed385c22..48d8cded95d370fa96c1fd266dcd712cc3f2d721 100644
--- a/source/blender/bmesh/operators/bmo_extrude.c
+++ b/source/blender/bmesh/operators/bmo_extrude.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_fill_attribute.c b/source/blender/bmesh/operators/bmo_fill_attribute.c
index 5e8924c4a3bae81c62977ef18e52e21becf6300d..efce7a3370698f12c78c15c6e1a859bd6d4ef2a8 100644
--- a/source/blender/bmesh/operators/bmo_fill_attribute.c
+++ b/source/blender/bmesh/operators/bmo_fill_attribute.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_fill_edgeloop.c b/source/blender/bmesh/operators/bmo_fill_edgeloop.c
index f366aede2abfbd80fa0ad8496330cc8af7f7499f..352b9336a20dc652ae5c599c7ab55e79dde72014 100644
--- a/source/blender/bmesh/operators/bmo_fill_edgeloop.c
+++ b/source/blender/bmesh/operators/bmo_fill_edgeloop.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_fill_grid.c b/source/blender/bmesh/operators/bmo_fill_grid.c
index 6734cc60cad117ad1fbaf6ca45879e8087d991d9..e256e261eaac313ae7b36525dc18ef9c81f0bc94 100644
--- a/source/blender/bmesh/operators/bmo_fill_grid.c
+++ b/source/blender/bmesh/operators/bmo_fill_grid.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_fill_holes.c b/source/blender/bmesh/operators/bmo_fill_holes.c
index a24d81c5bdb6e8c405b032bc6d0734d27aa8b33e..b717db8c76ff7fe83dc54fa473d7d922d6e7a092 100644
--- a/source/blender/bmesh/operators/bmo_fill_holes.c
+++ b/source/blender/bmesh/operators/bmo_fill_holes.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_hull.c b/source/blender/bmesh/operators/bmo_hull.c
index f6cdb18f9822be706e3e5144080ccc75c8b7201f..2e58b49a9d34388abe8a7894fc015635dd7106c6 100644
--- a/source/blender/bmesh/operators/bmo_hull.c
+++ b/source/blender/bmesh/operators/bmo_hull.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_inset.c b/source/blender/bmesh/operators/bmo_inset.c
index 4833290aa0b80e16ab0645f2dcb9cfb7da93156d..1da0108bd6abf27dd65fa5193b27ccfdd52d9d80 100644
--- a/source/blender/bmesh/operators/bmo_inset.c
+++ b/source/blender/bmesh/operators/bmo_inset.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_join_triangles.c b/source/blender/bmesh/operators/bmo_join_triangles.c
index 8b456bb0925226cbb760987e3831e289fcb2a734..35614069f9611501582fa5c9df2706fd176b3970 100644
--- a/source/blender/bmesh/operators/bmo_join_triangles.c
+++ b/source/blender/bmesh/operators/bmo_join_triangles.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_mesh_convert.c b/source/blender/bmesh/operators/bmo_mesh_convert.c
index e480db64f9d2c53ca177f9c03448b264d385046b..7cbbba80bb7d8ac6705ad6ed40733528b66d4092 100644
--- a/source/blender/bmesh/operators/bmo_mesh_convert.c
+++ b/source/blender/bmesh/operators/bmo_mesh_convert.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_mirror.c b/source/blender/bmesh/operators/bmo_mirror.c
index e9820327fe8b3ba7eea5fbc6c8276a2b66c19250..72507cbab6db028ec0fd7affdb813c57331d7738 100644
--- a/source/blender/bmesh/operators/bmo_mirror.c
+++ b/source/blender/bmesh/operators/bmo_mirror.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_normals.c b/source/blender/bmesh/operators/bmo_normals.c
index b5f5e5e308bda1c6ac3f22cb026d6d78988aae0a..04eaa43c899ab25fc6e23388c2603b0ced8ec829 100644
--- a/source/blender/bmesh/operators/bmo_normals.c
+++ b/source/blender/bmesh/operators/bmo_normals.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_offset_edgeloops.c b/source/blender/bmesh/operators/bmo_offset_edgeloops.c
index 28f2c9a47aa272f93648a655120bbd34d8ddf7a1..b545cd9067a1d141d11c56eed0ef89ec600d3119 100644
--- a/source/blender/bmesh/operators/bmo_offset_edgeloops.c
+++ b/source/blender/bmesh/operators/bmo_offset_edgeloops.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_planar_faces.c b/source/blender/bmesh/operators/bmo_planar_faces.c
index 53cfc379269514e29725279a9df03dfb4bd904b9..9946e7733695b7e13800782475cc52817338e420 100644
--- a/source/blender/bmesh/operators/bmo_planar_faces.c
+++ b/source/blender/bmesh/operators/bmo_planar_faces.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_poke.c b/source/blender/bmesh/operators/bmo_poke.c
index f57a2285e4a984a4f7af6d5b01cbe9136bf01734..7ff3b9b072c97209f20d14648cb62cb89d26e797 100644
--- a/source/blender/bmesh/operators/bmo_poke.c
+++ b/source/blender/bmesh/operators/bmo_poke.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_primitive.c b/source/blender/bmesh/operators/bmo_primitive.c
index 69404c8ba0ea586eaee12ea36a3e1125f4d866b1..432c7590f3c1f6c0428dce66d3a7a5e137757178 100644
--- a/source/blender/bmesh/operators/bmo_primitive.c
+++ b/source/blender/bmesh/operators/bmo_primitive.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_removedoubles.c b/source/blender/bmesh/operators/bmo_removedoubles.c
index 57760900d4515c051892dd15d1b4d33ba2fd03aa..e3275555b86c6df5cf208a2929f4a20fb82b5285 100644
--- a/source/blender/bmesh/operators/bmo_removedoubles.c
+++ b/source/blender/bmesh/operators/bmo_removedoubles.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_rotate_edges.c b/source/blender/bmesh/operators/bmo_rotate_edges.c
index 10dd9dcc9b71e712e14ceaf8f959b894c294895c..50d7014efcd786f8c523c4525a46003a3070d6ab 100644
--- a/source/blender/bmesh/operators/bmo_rotate_edges.c
+++ b/source/blender/bmesh/operators/bmo_rotate_edges.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_smooth_laplacian.c b/source/blender/bmesh/operators/bmo_smooth_laplacian.c
index 94856701e72c0e6d1fab0cf2e6ae05c2b969828d..704c2b267dedd2d5a4f8e791bf3c28156aaf9594 100644
--- a/source/blender/bmesh/operators/bmo_smooth_laplacian.c
+++ b/source/blender/bmesh/operators/bmo_smooth_laplacian.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_split_edges.c b/source/blender/bmesh/operators/bmo_split_edges.c
index 5a00094ef45a6398924cdc9edae93c27f0b4517f..222853a91742153563a69221d49d863d7e97dc72 100644
--- a/source/blender/bmesh/operators/bmo_split_edges.c
+++ b/source/blender/bmesh/operators/bmo_split_edges.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_subdivide.c b/source/blender/bmesh/operators/bmo_subdivide.c
index 05837ae2a0e31b2de91ed73ea0bceab14223282d..d6c64809e13c72d7c3aa9eaa3818e95b290c1b4f 100644
--- a/source/blender/bmesh/operators/bmo_subdivide.c
+++ b/source/blender/bmesh/operators/bmo_subdivide.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_subdivide_edgering.c b/source/blender/bmesh/operators/bmo_subdivide_edgering.c
index 7f0bfc5e2c9dfb588f0376892ccbd2d488de6b4f..3d2f59475391211c2e3972d14b97f4ca8275c2a8 100644
--- a/source/blender/bmesh/operators/bmo_subdivide_edgering.c
+++ b/source/blender/bmesh/operators/bmo_subdivide_edgering.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_symmetrize.c b/source/blender/bmesh/operators/bmo_symmetrize.c
index f5bfd22bd515bbcb096b94b2a82f67f8e545f151..13afff41263ab400feb2f613f1e4d2c13db9fbad 100644
--- a/source/blender/bmesh/operators/bmo_symmetrize.c
+++ b/source/blender/bmesh/operators/bmo_symmetrize.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_triangulate.c b/source/blender/bmesh/operators/bmo_triangulate.c
index 9fa74bb64c323f163b7e1901762fe3c83ea42533..a6d1ec45f1220edd8a83a103e70fc69ea5241ff1 100644
--- a/source/blender/bmesh/operators/bmo_triangulate.c
+++ b/source/blender/bmesh/operators/bmo_triangulate.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_unsubdivide.c b/source/blender/bmesh/operators/bmo_unsubdivide.c
index f11e359e96222c0f0a838c0dc5f0274b2adf75ef..fb32c252009f78cabf2b596e95c447a01c3d0570 100644
--- a/source/blender/bmesh/operators/bmo_unsubdivide.c
+++ b/source/blender/bmesh/operators/bmo_unsubdivide.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_utils.c b/source/blender/bmesh/operators/bmo_utils.c
index 7d2b6b734552913cf426d17d740e4d4da8b2e896..c79eecaf1a0b9afeec23a4cc9eab0255af198c46 100644
--- a/source/blender/bmesh/operators/bmo_utils.c
+++ b/source/blender/bmesh/operators/bmo_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/operators/bmo_wireframe.c b/source/blender/bmesh/operators/bmo_wireframe.c
index dc8a8d03eef6eebbcff388ae08bcfc96cce7595e..1ca8847e02e356f6e65df7a629854b0c69926bed 100644
--- a/source/blender/bmesh/operators/bmo_wireframe.c
+++ b/source/blender/bmesh/operators/bmo_wireframe.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_beautify.c b/source/blender/bmesh/tools/bmesh_beautify.c
index 266b1c0cea8975c067e28026d75ba786cf91219e..3cb5d3513e3985e676ba8eeb633fb0549aa407ad 100644
--- a/source/blender/bmesh/tools/bmesh_beautify.c
+++ b/source/blender/bmesh/tools/bmesh_beautify.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_beautify.h b/source/blender/bmesh/tools/bmesh_beautify.h
index a61ae55c3b057fa1fff49541b8a9372c5d5775f1..34ff5b065fe24da4b71f8da0e0ebbfb4c8ad5c27 100644
--- a/source/blender/bmesh/tools/bmesh_beautify.h
+++ b/source/blender/bmesh/tools/bmesh_beautify.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_bevel.c b/source/blender/bmesh/tools/bmesh_bevel.c
index 5461e2421f2deb7481cd20224ba463b53d2351f0..e2e26c5c52b462cf9766bb1d159cc3b5e9bd1205 100644
--- a/source/blender/bmesh/tools/bmesh_bevel.c
+++ b/source/blender/bmesh/tools/bmesh_bevel.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_bevel.h b/source/blender/bmesh/tools/bmesh_bevel.h
index 56533e83c3901763cba29c696be39ded97837f36..9729d19bb107c162956e730ce120882c45efaa8a 100644
--- a/source/blender/bmesh/tools/bmesh_bevel.h
+++ b/source/blender/bmesh/tools/bmesh_bevel.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_bisect_plane.c b/source/blender/bmesh/tools/bmesh_bisect_plane.c
index d220b183b8dc5a0ddf946270ba8f2ce5af3d001c..3d7bacf7080e6ca7e63f6093695bf768fa5b8cfe 100644
--- a/source/blender/bmesh/tools/bmesh_bisect_plane.c
+++ b/source/blender/bmesh/tools/bmesh_bisect_plane.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_bisect_plane.h b/source/blender/bmesh/tools/bmesh_bisect_plane.h
index d3c1c6f4c62f355edd180d6c1b2151d13731fb7e..fff53879ad32070b25c4f3a0e94193efcb1b654f 100644
--- a/source/blender/bmesh/tools/bmesh_bisect_plane.h
+++ b/source/blender/bmesh/tools/bmesh_bisect_plane.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_boolean.cc b/source/blender/bmesh/tools/bmesh_boolean.cc
index 91883b0adeeebc1452b7bd58efc6be5034d8db6a..216c73564c8839c57884bd2069bb3c55e8372bf3 100644
--- a/source/blender/bmesh/tools/bmesh_boolean.cc
+++ b/source/blender/bmesh/tools/bmesh_boolean.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_boolean.h b/source/blender/bmesh/tools/bmesh_boolean.h
index f97f49a7470a73bd6f9ebb53380a37f0d695f97e..c661225a0307dbe5107f4817b951e7c49c37c48a 100644
--- a/source/blender/bmesh/tools/bmesh_boolean.h
+++ b/source/blender/bmesh/tools/bmesh_boolean.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_decimate.h b/source/blender/bmesh/tools/bmesh_decimate.h
index 336b653d462de54910a660af54d7b90f4afffe3e..9f2f745b775ea0c9d76a7e826912c9f216b95374 100644
--- a/source/blender/bmesh/tools/bmesh_decimate.h
+++ b/source/blender/bmesh/tools/bmesh_decimate.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_decimate_collapse.c b/source/blender/bmesh/tools/bmesh_decimate_collapse.c
index c653b2b80075f201201fec4f6706033bc131a2de..07d4172d037013e2c0b0fb90a07f7c3dd3b9f953 100644
--- a/source/blender/bmesh/tools/bmesh_decimate_collapse.c
+++ b/source/blender/bmesh/tools/bmesh_decimate_collapse.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_decimate_dissolve.c b/source/blender/bmesh/tools/bmesh_decimate_dissolve.c
index d8a586acee53cea592f417df35f822dd283ca8d7..41c995a52bf253fbee140d932874983e11e5bf17 100644
--- a/source/blender/bmesh/tools/bmesh_decimate_dissolve.c
+++ b/source/blender/bmesh/tools/bmesh_decimate_dissolve.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_decimate_unsubdivide.c b/source/blender/bmesh/tools/bmesh_decimate_unsubdivide.c
index ca0f31fdf75b6a2ae8ee62897fdc29841278c3f9..bd479bad9456e56a87923188aa2c5ac6a8018826 100644
--- a/source/blender/bmesh/tools/bmesh_decimate_unsubdivide.c
+++ b/source/blender/bmesh/tools/bmesh_decimate_unsubdivide.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_edgenet.c b/source/blender/bmesh/tools/bmesh_edgenet.c
index 4cad1d3cb3cf47eb3030b5101f9bc73d8f6f4b15..110017739b9ffef3d27eb98c655137cc42abb2da 100644
--- a/source/blender/bmesh/tools/bmesh_edgenet.c
+++ b/source/blender/bmesh/tools/bmesh_edgenet.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_edgenet.h b/source/blender/bmesh/tools/bmesh_edgenet.h
index 60e9d9acff1629f8acdd4a230dd3d75bf9dfbb72..d9e79d1cf0933a1d3876f6db87e4a00a0b14c86c 100644
--- a/source/blender/bmesh/tools/bmesh_edgenet.h
+++ b/source/blender/bmesh/tools/bmesh_edgenet.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_edgesplit.c b/source/blender/bmesh/tools/bmesh_edgesplit.c
index cd5200a660d5fb15136442c9fa125e0598bea1ed..a703b5338ef58ef039a048865d9d8c0a1a75b770 100644
--- a/source/blender/bmesh/tools/bmesh_edgesplit.c
+++ b/source/blender/bmesh/tools/bmesh_edgesplit.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_edgesplit.h b/source/blender/bmesh/tools/bmesh_edgesplit.h
index dd835ba335c7014310f4907d1e7898f5d9695709..a89e3104e292335e0c0990a222d33e22d2b3d7cb 100644
--- a/source/blender/bmesh/tools/bmesh_edgesplit.h
+++ b/source/blender/bmesh/tools/bmesh_edgesplit.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_intersect.c b/source/blender/bmesh/tools/bmesh_intersect.c
index 6824dd5008a66637a24373e9a8440d2bceb28cc1..8e1dfbebe4769ac4240611ae699c56b057952804 100644
--- a/source/blender/bmesh/tools/bmesh_intersect.c
+++ b/source/blender/bmesh/tools/bmesh_intersect.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_intersect.h b/source/blender/bmesh/tools/bmesh_intersect.h
index 4fc6460a35fdb5cdddd964916d7e4b4e6947a04f..0ce90b9ed7dc9d811c96fb1b9c75a9663194a7bc 100644
--- a/source/blender/bmesh/tools/bmesh_intersect.h
+++ b/source/blender/bmesh/tools/bmesh_intersect.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_intersect_edges.c b/source/blender/bmesh/tools/bmesh_intersect_edges.c
index eb56075e1360783725e172cac78d0dfcbd1b9745..3efab3f78c83ae68223c94b777759cfcdb938b89 100644
--- a/source/blender/bmesh/tools/bmesh_intersect_edges.c
+++ b/source/blender/bmesh/tools/bmesh_intersect_edges.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_intersect_edges.h b/source/blender/bmesh/tools/bmesh_intersect_edges.h
index cd7293c4a0b838c54f468d28864f651807513a9e..94aae4d5723babd4319df49db3769410d17c3690 100644
--- a/source/blender/bmesh/tools/bmesh_intersect_edges.h
+++ b/source/blender/bmesh/tools/bmesh_intersect_edges.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_path.c b/source/blender/bmesh/tools/bmesh_path.c
index 52bb92a62218cc6c03801630b12908b14a3d5598..5f1003ad8085be630ce61cf652742d1d4403fb5b 100644
--- a/source/blender/bmesh/tools/bmesh_path.c
+++ b/source/blender/bmesh/tools/bmesh_path.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_path.h b/source/blender/bmesh/tools/bmesh_path.h
index 79c3d3a5d6338d258708090218bb40c373ced12d..405dfc7ae091a7750181488cc67c100ea93e7c36 100644
--- a/source/blender/bmesh/tools/bmesh_path.h
+++ b/source/blender/bmesh/tools/bmesh_path.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_path_region.c b/source/blender/bmesh/tools/bmesh_path_region.c
index 23be3cdf117b7fdd9c291279bda6a82bca914006..1e464108b844b22aa5fdbaa3c153435d51b96535 100644
--- a/source/blender/bmesh/tools/bmesh_path_region.c
+++ b/source/blender/bmesh/tools/bmesh_path_region.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_path_region.h b/source/blender/bmesh/tools/bmesh_path_region.h
index 2badead33a062f51c12bdffa2ba717a032233ff1..791c76942b933a2c2ddfbd12a2422db5e10f6493 100644
--- a/source/blender/bmesh/tools/bmesh_path_region.h
+++ b/source/blender/bmesh/tools/bmesh_path_region.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_path_region_uv.c b/source/blender/bmesh/tools/bmesh_path_region_uv.c
index 517913b5b56534a3983c97b55504aaee0eaf4a4a..5c70f7fa5ec22b1c50a868347f24e82bbeaa266c 100644
--- a/source/blender/bmesh/tools/bmesh_path_region_uv.c
+++ b/source/blender/bmesh/tools/bmesh_path_region_uv.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_path_region_uv.h b/source/blender/bmesh/tools/bmesh_path_region_uv.h
index 2f29ef2a36ea2538d7e27470642437f606e52dc8..fa1b2bfcf9b7998cb298eab8860292b422346ebb 100644
--- a/source/blender/bmesh/tools/bmesh_path_region_uv.h
+++ b/source/blender/bmesh/tools/bmesh_path_region_uv.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_path_uv.c b/source/blender/bmesh/tools/bmesh_path_uv.c
index 131a8aa008541d12f10e83a7f4a35d93ccf29d02..a2b35839454a2928209bd29eaeadbcc0ebc95c85 100644
--- a/source/blender/bmesh/tools/bmesh_path_uv.c
+++ b/source/blender/bmesh/tools/bmesh_path_uv.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_path_uv.h b/source/blender/bmesh/tools/bmesh_path_uv.h
index 5f35d2c1594813dda5e9edddc9d7fcc3f5c1a519..af7341e22199cc0c78139b2e8d02f3074776e26e 100644
--- a/source/blender/bmesh/tools/bmesh_path_uv.h
+++ b/source/blender/bmesh/tools/bmesh_path_uv.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_region_match.c b/source/blender/bmesh/tools/bmesh_region_match.c
index 2ada18f51e76322feb46a3ca79544c41ac391201..d693755053c2cb0de15f68a08d5b4e7c15397b0e 100644
--- a/source/blender/bmesh/tools/bmesh_region_match.c
+++ b/source/blender/bmesh/tools/bmesh_region_match.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_region_match.h b/source/blender/bmesh/tools/bmesh_region_match.h
index 7b7233783ce91fe60b5c130154cda5898d6d159b..3ea426e932665e17648c6f34c85bf49ea7b276fc 100644
--- a/source/blender/bmesh/tools/bmesh_region_match.h
+++ b/source/blender/bmesh/tools/bmesh_region_match.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_separate.c b/source/blender/bmesh/tools/bmesh_separate.c
index e00829604d51ed2aed1df6daee8b2cfa0bb9718f..2282c482e52dd4e140a0732cf6a62a33320ae162 100644
--- a/source/blender/bmesh/tools/bmesh_separate.c
+++ b/source/blender/bmesh/tools/bmesh_separate.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_separate.h b/source/blender/bmesh/tools/bmesh_separate.h
index 8c599eef2b08ecce2666e65e00aeed50397ee259..edece915a2e248deb70b39e6b04596f69f02696e 100644
--- a/source/blender/bmesh/tools/bmesh_separate.h
+++ b/source/blender/bmesh/tools/bmesh_separate.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_triangulate.c b/source/blender/bmesh/tools/bmesh_triangulate.c
index 08dbac95b563aa257aa237241c9d70be65644289..9f1d24ee65465a6272eb2bc8169f34da15f9dd43 100644
--- a/source/blender/bmesh/tools/bmesh_triangulate.c
+++ b/source/blender/bmesh/tools/bmesh_triangulate.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_triangulate.h b/source/blender/bmesh/tools/bmesh_triangulate.h
index 0d78b6a74b41be6ed0228816b1fa324f1793e225..676e5c01280c129c77f4088793841d97957e8284 100644
--- a/source/blender/bmesh/tools/bmesh_triangulate.h
+++ b/source/blender/bmesh/tools/bmesh_triangulate.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_wireframe.c b/source/blender/bmesh/tools/bmesh_wireframe.c
index 67010fc89c7334d1bb31ce77807ddcdd9e533a48..14ec45f14b0e89b0009872fece4bf6d030e8c230 100644
--- a/source/blender/bmesh/tools/bmesh_wireframe.c
+++ b/source/blender/bmesh/tools/bmesh_wireframe.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_wireframe.h b/source/blender/bmesh/tools/bmesh_wireframe.h
index 8e523780a677e17917a1a9643ecdeb5a1f4321fc..a5f1da8b3e92d8662ff2ae43db25d42a7be57a22 100644
--- a/source/blender/bmesh/tools/bmesh_wireframe.h
+++ b/source/blender/bmesh/tools/bmesh_wireframe.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/compositor/CMakeLists.txt b/source/blender/compositor/CMakeLists.txt
index 2f473ef294526dcaf8126a0aab35686d382cf058..8263547ccb3da422011e6759c24e0d3d91160a10 100644
--- a/source/blender/compositor/CMakeLists.txt
+++ b/source/blender/compositor/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2011, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2011 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/compositor/COM_compositor.h b/source/blender/compositor/COM_compositor.h
index 67d189fe5f82acf18896d2b96ebaa9c932b1439c..eafa6614d31e39223bf190a14c4db36d48005b6b 100644
--- a/source/blender/compositor/COM_compositor.h
+++ b/source/blender/compositor/COM_compositor.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/COM_defines.h b/source/blender/compositor/COM_defines.h
index 794bf1b23bc82836b6ef0ea58eb44e16bcc2ff19..32f097a4dc547beb7957adbac9f23331a0ed5445 100644
--- a/source/blender/compositor/COM_defines.h
+++ b/source/blender/compositor/COM_defines.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_BufferArea.h b/source/blender/compositor/intern/COM_BufferArea.h
index 6f7756ecbfc0e0019c623338d874ab0fd5055067..73c58c3e03ea6c0cf1fb1374b84336fa86159d3f 100644
--- a/source/blender/compositor/intern/COM_BufferArea.h
+++ b/source/blender/compositor/intern/COM_BufferArea.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_BufferOperation.cc b/source/blender/compositor/intern/COM_BufferOperation.cc
index 81ea645e482ac2e69f35067bd4948f84994d955d..905e8b9912a30689423841f0ffa10334e411abed 100644
--- a/source/blender/compositor/intern/COM_BufferOperation.cc
+++ b/source/blender/compositor/intern/COM_BufferOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_BufferOperation.h"
 
diff --git a/source/blender/compositor/intern/COM_BufferOperation.h b/source/blender/compositor/intern/COM_BufferOperation.h
index 4aba3a705ddef226217df4a009425142c5120773..f04408a839842252afdd40093a0da4fa88bf3285 100644
--- a/source/blender/compositor/intern/COM_BufferOperation.h
+++ b/source/blender/compositor/intern/COM_BufferOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_BufferRange.h b/source/blender/compositor/intern/COM_BufferRange.h
index 7684ae52fab0531b0ed953df1b0ce512f6d440b5..048d6ad6100c7517514ac426f0eeda0e4816824d 100644
--- a/source/blender/compositor/intern/COM_BufferRange.h
+++ b/source/blender/compositor/intern/COM_BufferRange.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_BuffersIterator.h b/source/blender/compositor/intern/COM_BuffersIterator.h
index bfe0b7a3d45c6c6c585ae1019acdcc2470efb53d..0af00a6ca7d8a30ad8b78cf48aa832fe3ce17d7c 100644
--- a/source/blender/compositor/intern/COM_BuffersIterator.h
+++ b/source/blender/compositor/intern/COM_BuffersIterator.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_CPUDevice.cc b/source/blender/compositor/intern/COM_CPUDevice.cc
index ad7a807b8fdee6bfd0414bb678824a22ca950592..93c0b233752619628487d3dcc17d517e0b4ba38d 100644
--- a/source/blender/compositor/intern/COM_CPUDevice.cc
+++ b/source/blender/compositor/intern/COM_CPUDevice.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_CPUDevice.h"
 
diff --git a/source/blender/compositor/intern/COM_CPUDevice.h b/source/blender/compositor/intern/COM_CPUDevice.h
index b5d1fd1fff14d3bce93ee66e2eeb055a1edcfbba..dbaae763eede421bc2d7f1954e1440597e7fdddc 100644
--- a/source/blender/compositor/intern/COM_CPUDevice.h
+++ b/source/blender/compositor/intern/COM_CPUDevice.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_ChunkOrder.cc b/source/blender/compositor/intern/COM_ChunkOrder.cc
index 3e0246ce893877f36e9bc595ebcc11d80074a3c2..38298840bf0140e044a51fd01e48a46313ab62f5 100644
--- a/source/blender/compositor/intern/COM_ChunkOrder.cc
+++ b/source/blender/compositor/intern/COM_ChunkOrder.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include <cfloat>
 
diff --git a/source/blender/compositor/intern/COM_ChunkOrder.h b/source/blender/compositor/intern/COM_ChunkOrder.h
index a697f9231d9523f6f448fdec2488787bade008e4..927eab97ccd582b9f851a81cfda30d5eb48ebdd7 100644
--- a/source/blender/compositor/intern/COM_ChunkOrder.h
+++ b/source/blender/compositor/intern/COM_ChunkOrder.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_ChunkOrderHotspot.cc b/source/blender/compositor/intern/COM_ChunkOrderHotspot.cc
index b8e19fc2c343cc2ee89be019b73cf5b6a0837fe9..b9179c0a9102d7027bb73c7f6983b7d9ba202c8b 100644
--- a/source/blender/compositor/intern/COM_ChunkOrderHotspot.cc
+++ b/source/blender/compositor/intern/COM_ChunkOrderHotspot.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ChunkOrderHotspot.h"
 #include <cmath>
diff --git a/source/blender/compositor/intern/COM_ChunkOrderHotspot.h b/source/blender/compositor/intern/COM_ChunkOrderHotspot.h
index 249b328f5c2fed44c4668c4097604f479ea1c2bb..f6a4638dfc073f5d78386fcb7e9dc8ac18b7a63a 100644
--- a/source/blender/compositor/intern/COM_ChunkOrderHotspot.h
+++ b/source/blender/compositor/intern/COM_ChunkOrderHotspot.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_CompositorContext.cc b/source/blender/compositor/intern/COM_CompositorContext.cc
index 7b0f7b0f8fbd56f6fe5125700b7f2efebe2e400c..f17a24c6b9d41359940712f66b9c0269744ea330 100644
--- a/source/blender/compositor/intern/COM_CompositorContext.cc
+++ b/source/blender/compositor/intern/COM_CompositorContext.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_CompositorContext.h"
 
diff --git a/source/blender/compositor/intern/COM_CompositorContext.h b/source/blender/compositor/intern/COM_CompositorContext.h
index e41576b6f69abae02a11dbe47bccef2f2ded739f..430bab4835266132e87b86adf68b4ff1bca113b2 100644
--- a/source/blender/compositor/intern/COM_CompositorContext.h
+++ b/source/blender/compositor/intern/COM_CompositorContext.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_ConstantFolder.cc b/source/blender/compositor/intern/COM_ConstantFolder.cc
index f10bee38a6ea415bed12bd19ec915dc1acdd528a..5cbacd5376f664dfcb8a4948018e176218a9785e 100644
--- a/source/blender/compositor/intern/COM_ConstantFolder.cc
+++ b/source/blender/compositor/intern/COM_ConstantFolder.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "BLI_map.hh"
 #include "BLI_set.hh"
diff --git a/source/blender/compositor/intern/COM_ConstantFolder.h b/source/blender/compositor/intern/COM_ConstantFolder.h
index 972dbf0e125554f4e0364a5f8bf1e49291d92e5a..bdc9527bb3cf197a8c9ec7ab325b76feba04f554 100644
--- a/source/blender/compositor/intern/COM_ConstantFolder.h
+++ b/source/blender/compositor/intern/COM_ConstantFolder.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_Converter.cc b/source/blender/compositor/intern/COM_Converter.cc
index d0b3ae744462023bced48e84c300812ccf777282..13d412a338b3cdc3138dad03ddf63087c2d643a7 100644
--- a/source/blender/compositor/intern/COM_Converter.cc
+++ b/source/blender/compositor/intern/COM_Converter.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include <cstring>
 
diff --git a/source/blender/compositor/intern/COM_Converter.h b/source/blender/compositor/intern/COM_Converter.h
index 39bd44e8a9fceb051e8aecd662cbd4b3a98bcae6..e0164b9162d0fda7c6293d7f836e93c4dd0d6b43 100644
--- a/source/blender/compositor/intern/COM_Converter.h
+++ b/source/blender/compositor/intern/COM_Converter.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_Debug.cc b/source/blender/compositor/intern/COM_Debug.cc
index 8525e2fde50e5e33f1477cfce2b8b2ae680b8bcd..0d9d3b111b0bf20b6b5595db4ea8da63de21f20d 100644
--- a/source/blender/compositor/intern/COM_Debug.cc
+++ b/source/blender/compositor/intern/COM_Debug.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #include "COM_Debug.h"
 
diff --git a/source/blender/compositor/intern/COM_Debug.h b/source/blender/compositor/intern/COM_Debug.h
index 021d6e744fb594b704e85eb532cba76f645c2225..53b8c1c2d2cee63987ce90f3fce934b79785b47d 100644
--- a/source/blender/compositor/intern/COM_Debug.h
+++ b/source/blender/compositor/intern/COM_Debug.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_Device.cc b/source/blender/compositor/intern/COM_Device.cc
index 38a22369005046c4584d2100f2cf8ce5234f3eaf..c0d119322680e5c673096d0d944561b9ca9c856a 100644
--- a/source/blender/compositor/intern/COM_Device.cc
+++ b/source/blender/compositor/intern/COM_Device.cc
@@ -1,19 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_Device.h"
diff --git a/source/blender/compositor/intern/COM_Device.h b/source/blender/compositor/intern/COM_Device.h
index a409ddf97a5e6b6073f78c7bf91137d4a7c147cb..03f981cd0a2a201ec22fd8a157c59ef797ee62be 100644
--- a/source/blender/compositor/intern/COM_Device.h
+++ b/source/blender/compositor/intern/COM_Device.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_Enums.cc b/source/blender/compositor/intern/COM_Enums.cc
index 63a5a78436bd2ea623c6e8c0652641afc5af7af9..152919f7bb5fffa2b8f5efd4890225b40cb598c4 100644
--- a/source/blender/compositor/intern/COM_Enums.cc
+++ b/source/blender/compositor/intern/COM_Enums.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_Enums.h"
 
diff --git a/source/blender/compositor/intern/COM_Enums.h b/source/blender/compositor/intern/COM_Enums.h
index 7e5a1b73132954a8b8f4cb71e0d478ce33cf9c99..9fbfb1f858dfe56ec41e402aa1c99659be6df4f9 100644
--- a/source/blender/compositor/intern/COM_Enums.h
+++ b/source/blender/compositor/intern/COM_Enums.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_ExecutionGroup.cc b/source/blender/compositor/intern/COM_ExecutionGroup.cc
index 63ca642d52d699e5c08f700509a388822ac5177c..6f2d4faffb155da4a5a61e399f3240b1483c90af 100644
--- a/source/blender/compositor/intern/COM_ExecutionGroup.cc
+++ b/source/blender/compositor/intern/COM_ExecutionGroup.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ExecutionGroup.h"
 #include "COM_ChunkOrder.h"
diff --git a/source/blender/compositor/intern/COM_ExecutionGroup.h b/source/blender/compositor/intern/COM_ExecutionGroup.h
index d37bfe29306e320ca52c323b291da78794c0463c..fc7562658f1d234e30949a9739996ca17f88b326 100644
--- a/source/blender/compositor/intern/COM_ExecutionGroup.h
+++ b/source/blender/compositor/intern/COM_ExecutionGroup.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_ExecutionModel.cc b/source/blender/compositor/intern/COM_ExecutionModel.cc
index b319aaa4b21906c7b5bf873ba252dd1c62a5551e..235ad83761f9c6de5f1485531259d83dde379c0f 100644
--- a/source/blender/compositor/intern/COM_ExecutionModel.cc
+++ b/source/blender/compositor/intern/COM_ExecutionModel.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_ExecutionModel.h"
 #include "COM_CompositorContext.h"
diff --git a/source/blender/compositor/intern/COM_ExecutionModel.h b/source/blender/compositor/intern/COM_ExecutionModel.h
index f0adc7d3e547240ed82974dfdf764f198099d128..5c896b690cd2f491b735c6f27af7c4c6cbc60948 100644
--- a/source/blender/compositor/intern/COM_ExecutionModel.h
+++ b/source/blender/compositor/intern/COM_ExecutionModel.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_ExecutionSystem.cc b/source/blender/compositor/intern/COM_ExecutionSystem.cc
index 038df6ed9dffb2de74d5b90bf4bad1d498d9d928..036e2bc8a9156f44d3ea65ce17f810cf28631000 100644
--- a/source/blender/compositor/intern/COM_ExecutionSystem.cc
+++ b/source/blender/compositor/intern/COM_ExecutionSystem.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ExecutionSystem.h"
 
diff --git a/source/blender/compositor/intern/COM_ExecutionSystem.h b/source/blender/compositor/intern/COM_ExecutionSystem.h
index 4456ec107fae913c82c71985de4f9478cff11762..9dd20d181440be02b26d89ca970a0c56ce717363 100644
--- a/source/blender/compositor/intern/COM_ExecutionSystem.h
+++ b/source/blender/compositor/intern/COM_ExecutionSystem.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_FullFrameExecutionModel.cc b/source/blender/compositor/intern/COM_FullFrameExecutionModel.cc
index 15dbbfde7ed31129e6a65f1949d1c66bcf05ed33..ceb52feb9b4837b2079fad84f16921fe6726c535 100644
--- a/source/blender/compositor/intern/COM_FullFrameExecutionModel.cc
+++ b/source/blender/compositor/intern/COM_FullFrameExecutionModel.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_FullFrameExecutionModel.h"
 
diff --git a/source/blender/compositor/intern/COM_FullFrameExecutionModel.h b/source/blender/compositor/intern/COM_FullFrameExecutionModel.h
index 6d3a5fba53a5fa2283daa7b8e92b11bedfaaed06..74cdd68972247a4d32d8eb986dde8fbfee60edbd 100644
--- a/source/blender/compositor/intern/COM_FullFrameExecutionModel.h
+++ b/source/blender/compositor/intern/COM_FullFrameExecutionModel.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_MemoryBuffer.cc b/source/blender/compositor/intern/COM_MemoryBuffer.cc
index dcc279e3b883f8fb6ee8292adc255d2cd2c379b4..ea2a85e8ea9b9648f40715de70bdd8c1c92dfe8c 100644
--- a/source/blender/compositor/intern/COM_MemoryBuffer.cc
+++ b/source/blender/compositor/intern/COM_MemoryBuffer.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MemoryBuffer.h"
 
diff --git a/source/blender/compositor/intern/COM_MemoryBuffer.h b/source/blender/compositor/intern/COM_MemoryBuffer.h
index 1765fb93035c0e4bdfd39ec4203e7fe4984dea80..701ef9679c9c39362d5f7bdcb48eaab8f7619d7c 100644
--- a/source/blender/compositor/intern/COM_MemoryBuffer.h
+++ b/source/blender/compositor/intern/COM_MemoryBuffer.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_MemoryProxy.cc b/source/blender/compositor/intern/COM_MemoryProxy.cc
index 6263c47fc9e7ea3e2cfe17a448b900a1314f44a9..42d0f86843da4b3d1864677a06a4c4112236da4a 100644
--- a/source/blender/compositor/intern/COM_MemoryProxy.cc
+++ b/source/blender/compositor/intern/COM_MemoryProxy.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MemoryProxy.h"
 #include "COM_MemoryBuffer.h"
diff --git a/source/blender/compositor/intern/COM_MemoryProxy.h b/source/blender/compositor/intern/COM_MemoryProxy.h
index 89149a47976d06c4811ff578d9933907a229da05..e181752e496c8d30b0161fa8f6bbcf1dd4bcc6ea 100644
--- a/source/blender/compositor/intern/COM_MemoryProxy.h
+++ b/source/blender/compositor/intern/COM_MemoryProxy.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_MetaData.cc b/source/blender/compositor/intern/COM_MetaData.cc
index 50561975ae4a06328fa30a4fbd947de732be7c3d..9ee3d7e5c224b08354382e1e0e2378a9236c0dac 100644
--- a/source/blender/compositor/intern/COM_MetaData.cc
+++ b/source/blender/compositor/intern/COM_MetaData.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_MetaData.h"
 
diff --git a/source/blender/compositor/intern/COM_MetaData.h b/source/blender/compositor/intern/COM_MetaData.h
index be47d7c281e2abb625c061e221021a24474bf646..de09d9995db06a45f6103cec4abe212fa199ac03 100644
--- a/source/blender/compositor/intern/COM_MetaData.h
+++ b/source/blender/compositor/intern/COM_MetaData.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_MultiThreadedOperation.h b/source/blender/compositor/intern/COM_MultiThreadedOperation.h
index a7e574ca745fabb739c6e537df5c38fd55db0dd9..9ec81fa834ed1daa4f0e0d5b9060fd44e2423293 100644
--- a/source/blender/compositor/intern/COM_MultiThreadedOperation.h
+++ b/source/blender/compositor/intern/COM_MultiThreadedOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_MultiThreadedRowOperation.cc b/source/blender/compositor/intern/COM_MultiThreadedRowOperation.cc
index 6bf318bb96b7261c9d4ec8752fc2739b8f214ac4..c071fccbae7ebf2337ea78b07a32cd05a1afcfc7 100644
--- a/source/blender/compositor/intern/COM_MultiThreadedRowOperation.cc
+++ b/source/blender/compositor/intern/COM_MultiThreadedRowOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_MultiThreadedRowOperation.h"
 
diff --git a/source/blender/compositor/intern/COM_MultiThreadedRowOperation.h b/source/blender/compositor/intern/COM_MultiThreadedRowOperation.h
index c1835e85949bc2bb7ea8268d6b0eacec0abbd67c..125b85c0439025279dfce79e2b811d945a71814c 100644
--- a/source/blender/compositor/intern/COM_MultiThreadedRowOperation.h
+++ b/source/blender/compositor/intern/COM_MultiThreadedRowOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_Node.cc b/source/blender/compositor/intern/COM_Node.cc
index 67af9496ca43721728de98090326cffcbd044105..9f2fb8552f66692e87f1c3fd1adeddf27e833122 100644
--- a/source/blender/compositor/intern/COM_Node.cc
+++ b/source/blender/compositor/intern/COM_Node.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "BKE_node.h"
 
diff --git a/source/blender/compositor/intern/COM_Node.h b/source/blender/compositor/intern/COM_Node.h
index 37fa71f9b974f54fbab19519cf155505049b718a..ae910c2834269e7257e92a2ddcbc72fd1427d88a 100644
--- a/source/blender/compositor/intern/COM_Node.h
+++ b/source/blender/compositor/intern/COM_Node.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_NodeConverter.cc b/source/blender/compositor/intern/COM_NodeConverter.cc
index 93ec559533b44e90013c5c4f06ac408c6fdd8d7a..054f822cb65371d394bd43fd50d430c8d6303f8a 100644
--- a/source/blender/compositor/intern/COM_NodeConverter.cc
+++ b/source/blender/compositor/intern/COM_NodeConverter.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #include "BLI_utildefines.h"
 
diff --git a/source/blender/compositor/intern/COM_NodeConverter.h b/source/blender/compositor/intern/COM_NodeConverter.h
index 9193a28a77f0b0928207829306ea08899e3f7a24..a90531bad0ecd2a262902f001f679cf588324439 100644
--- a/source/blender/compositor/intern/COM_NodeConverter.h
+++ b/source/blender/compositor/intern/COM_NodeConverter.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_NodeGraph.cc b/source/blender/compositor/intern/COM_NodeGraph.cc
index 64684b772d9c31d63f51370209af9f2868619d82..b38ac804cf5a934561b034413041dee05c349dcb 100644
--- a/source/blender/compositor/intern/COM_NodeGraph.cc
+++ b/source/blender/compositor/intern/COM_NodeGraph.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #include <cstring>
 
diff --git a/source/blender/compositor/intern/COM_NodeGraph.h b/source/blender/compositor/intern/COM_NodeGraph.h
index 476b99033c9a598ed856721bd55d53fb4840a4aa..46f2facfb0ec25a3bef691549e88182d4bd74078 100644
--- a/source/blender/compositor/intern/COM_NodeGraph.h
+++ b/source/blender/compositor/intern/COM_NodeGraph.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_NodeOperation.cc b/source/blender/compositor/intern/COM_NodeOperation.cc
index 1f8bc5428431aa7c3d8e9d9393488ddb140f3510..3867b1d5c101f555feb0a0f0df2a5587c8ef8e56 100644
--- a/source/blender/compositor/intern/COM_NodeOperation.cc
+++ b/source/blender/compositor/intern/COM_NodeOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include <cstdio>
 
diff --git a/source/blender/compositor/intern/COM_NodeOperation.h b/source/blender/compositor/intern/COM_NodeOperation.h
index 4412c02151780f65336de433760c6a632f0da018..aa9e4329ab66fe45d9d4e60f7304bc9e3c89b295 100644
--- a/source/blender/compositor/intern/COM_NodeOperation.h
+++ b/source/blender/compositor/intern/COM_NodeOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_NodeOperationBuilder.cc b/source/blender/compositor/intern/COM_NodeOperationBuilder.cc
index 2109dd9c582f0f0f8583621662a0aea08625b757..2f27699ce9c617431fb3a35b7b1289189342c654 100644
--- a/source/blender/compositor/intern/COM_NodeOperationBuilder.cc
+++ b/source/blender/compositor/intern/COM_NodeOperationBuilder.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #include <set>
 
diff --git a/source/blender/compositor/intern/COM_NodeOperationBuilder.h b/source/blender/compositor/intern/COM_NodeOperationBuilder.h
index efc927e7c9e5614ffb5a2ad60e5c5348707c5a5a..09cb36b6e8162698a0232aea0d19f281a98aab4d 100644
--- a/source/blender/compositor/intern/COM_NodeOperationBuilder.h
+++ b/source/blender/compositor/intern/COM_NodeOperationBuilder.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_OpenCLDevice.cc b/source/blender/compositor/intern/COM_OpenCLDevice.cc
index 9a274abf806da320d0cae6f6fafab3565d61ae37..d951ebef1721b6d62674fe7e43132037cf47d698 100644
--- a/source/blender/compositor/intern/COM_OpenCLDevice.cc
+++ b/source/blender/compositor/intern/COM_OpenCLDevice.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_OpenCLDevice.h"
 
diff --git a/source/blender/compositor/intern/COM_OpenCLDevice.h b/source/blender/compositor/intern/COM_OpenCLDevice.h
index 44a2574740783fb78ed09f1306ef182b78829aa9..9feed398bdbf13b76692a58f4fa49014480b375e 100644
--- a/source/blender/compositor/intern/COM_OpenCLDevice.h
+++ b/source/blender/compositor/intern/COM_OpenCLDevice.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 class OpenCLDevice;
 
diff --git a/source/blender/compositor/intern/COM_SharedOperationBuffers.cc b/source/blender/compositor/intern/COM_SharedOperationBuffers.cc
index 567b5e0ee53162181a4b052bbc58bc2799b18acf..9102122e226e0a1866baa71e3b2594286417edad 100644
--- a/source/blender/compositor/intern/COM_SharedOperationBuffers.cc
+++ b/source/blender/compositor/intern/COM_SharedOperationBuffers.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_SharedOperationBuffers.h"
 #include "COM_NodeOperation.h"
diff --git a/source/blender/compositor/intern/COM_SharedOperationBuffers.h b/source/blender/compositor/intern/COM_SharedOperationBuffers.h
index fd053fce02f36d08d642c73c1d690b714adbb7fa..6187608558b053439ae572b60deb4bd408eeeb29 100644
--- a/source/blender/compositor/intern/COM_SharedOperationBuffers.h
+++ b/source/blender/compositor/intern/COM_SharedOperationBuffers.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_SingleThreadedOperation.cc b/source/blender/compositor/intern/COM_SingleThreadedOperation.cc
index 5ad324459fd5bb0830c488bc8ac1a6e7a5b99ac0..14506bbe29825a8ce8f63be4112c5d00cdd3928c 100644
--- a/source/blender/compositor/intern/COM_SingleThreadedOperation.cc
+++ b/source/blender/compositor/intern/COM_SingleThreadedOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SingleThreadedOperation.h"
 
diff --git a/source/blender/compositor/intern/COM_SingleThreadedOperation.h b/source/blender/compositor/intern/COM_SingleThreadedOperation.h
index 7588e654f7590bda3508f5b924c7f317a231d714..46a842cfd81c47b63b6b7178aef4833d79286d91 100644
--- a/source/blender/compositor/intern/COM_SingleThreadedOperation.h
+++ b/source/blender/compositor/intern/COM_SingleThreadedOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_TiledExecutionModel.cc b/source/blender/compositor/intern/COM_TiledExecutionModel.cc
index e9f7310cead6098419ba242ef90f17a3fc5a836f..cf8d3e9a084b0bef687f2b5a4bb2af732cbade3f 100644
--- a/source/blender/compositor/intern/COM_TiledExecutionModel.cc
+++ b/source/blender/compositor/intern/COM_TiledExecutionModel.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_TiledExecutionModel.h"
 #include "COM_Debug.h"
diff --git a/source/blender/compositor/intern/COM_TiledExecutionModel.h b/source/blender/compositor/intern/COM_TiledExecutionModel.h
index 1f5345241e24696aae3fd02cef369d0d9330c1af..c83b9f5ba0e2fa051ee418e3c3539d35a5f823b2 100644
--- a/source/blender/compositor/intern/COM_TiledExecutionModel.h
+++ b/source/blender/compositor/intern/COM_TiledExecutionModel.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_WorkPackage.cc b/source/blender/compositor/intern/COM_WorkPackage.cc
index 7db44226574d53656d04de33a123bbc5ee6d51fd..18970e7fd80b1915e3daad64104bc8054c28036e 100644
--- a/source/blender/compositor/intern/COM_WorkPackage.cc
+++ b/source/blender/compositor/intern/COM_WorkPackage.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_WorkPackage.h"
 
diff --git a/source/blender/compositor/intern/COM_WorkPackage.h b/source/blender/compositor/intern/COM_WorkPackage.h
index 1fe50b9ecf30d9302c6dff90a63f5e6621d848d6..aee216aeb526306a1e3ef97e725cc248fe139dd2 100644
--- a/source/blender/compositor/intern/COM_WorkPackage.h
+++ b/source/blender/compositor/intern/COM_WorkPackage.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_WorkScheduler.cc b/source/blender/compositor/intern/COM_WorkScheduler.cc
index c88cc556e72c1856f82990fd78a3d016ebb2a957..1f93a3d9bfa910e6f50634a6297ebc6207b182f8 100644
--- a/source/blender/compositor/intern/COM_WorkScheduler.cc
+++ b/source/blender/compositor/intern/COM_WorkScheduler.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_WorkScheduler.h"
 
diff --git a/source/blender/compositor/intern/COM_WorkScheduler.h b/source/blender/compositor/intern/COM_WorkScheduler.h
index dfba5a03256b0cb246dd6c5b133068371cbd4f61..da20e2b8272e793a78b480310771299415fa4bfb 100644
--- a/source/blender/compositor/intern/COM_WorkScheduler.h
+++ b/source/blender/compositor/intern/COM_WorkScheduler.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/intern/COM_compositor.cc b/source/blender/compositor/intern/COM_compositor.cc
index 5c9b34c47727025dfab4e3112974983fb66b68cd..791cc327bfbb814c19acf5347e59b012e7e48f70 100644
--- a/source/blender/compositor/intern/COM_compositor.cc
+++ b/source/blender/compositor/intern/COM_compositor.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "BLI_threads.h"
 
diff --git a/source/blender/compositor/nodes/COM_AlphaOverNode.cc b/source/blender/compositor/nodes/COM_AlphaOverNode.cc
index 42836d0a575bc52d5985ed8b6a21de7a33ca1e23..5b0f7a1d0e6521ecc6128575e0185c58269f4047 100644
--- a/source/blender/compositor/nodes/COM_AlphaOverNode.cc
+++ b/source/blender/compositor/nodes/COM_AlphaOverNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_AlphaOverNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_AlphaOverNode.h b/source/blender/compositor/nodes/COM_AlphaOverNode.h
index 447570fe604b1e8155a7600c0d181bc3546b2c54..40b1d3c2b4f765f5bffe391ba8cd9cd8d8cc0cb3 100644
--- a/source/blender/compositor/nodes/COM_AlphaOverNode.h
+++ b/source/blender/compositor/nodes/COM_AlphaOverNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_AntiAliasingNode.cc b/source/blender/compositor/nodes/COM_AntiAliasingNode.cc
index d1b2e69d7ff2b04b382a3c65b99f15d1f6e1e2f4..e201720c53b7af3d57b87a3b0f618135c95a5336 100644
--- a/source/blender/compositor/nodes/COM_AntiAliasingNode.cc
+++ b/source/blender/compositor/nodes/COM_AntiAliasingNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2017, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 #include "COM_AntiAliasingNode.h"
 #include "COM_SMAAOperation.h"
diff --git a/source/blender/compositor/nodes/COM_AntiAliasingNode.h b/source/blender/compositor/nodes/COM_AntiAliasingNode.h
index bcae235b434d367ce7b57542219b5130ac0c8e9a..fe0a0fb2ff96419a11db7c509d63e84ea8048134 100644
--- a/source/blender/compositor/nodes/COM_AntiAliasingNode.h
+++ b/source/blender/compositor/nodes/COM_AntiAliasingNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2017, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_BilateralBlurNode.cc b/source/blender/compositor/nodes/COM_BilateralBlurNode.cc
index 2390f6305b2dfc676cdd82f618bab53448df854b..5393072950361e59be3dd619774d97f0f9aa793b 100644
--- a/source/blender/compositor/nodes/COM_BilateralBlurNode.cc
+++ b/source/blender/compositor/nodes/COM_BilateralBlurNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_BilateralBlurNode.h"
 #include "COM_BilateralBlurOperation.h"
diff --git a/source/blender/compositor/nodes/COM_BilateralBlurNode.h b/source/blender/compositor/nodes/COM_BilateralBlurNode.h
index 6bef897f2ef888b52ab5b66446ce0152eca6cd81..41ec86ebc502024d2aaae568b56f9f5857663f57 100644
--- a/source/blender/compositor/nodes/COM_BilateralBlurNode.h
+++ b/source/blender/compositor/nodes/COM_BilateralBlurNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_BlurNode.cc b/source/blender/compositor/nodes/COM_BlurNode.cc
index 97a7159de6766b05d6d44065f63d3b0fd8baad28..a8148d7abd717f2a287bb8d56339dca7f29d05f9 100644
--- a/source/blender/compositor/nodes/COM_BlurNode.cc
+++ b/source/blender/compositor/nodes/COM_BlurNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_BlurNode.h"
 #include "COM_FastGaussianBlurOperation.h"
diff --git a/source/blender/compositor/nodes/COM_BlurNode.h b/source/blender/compositor/nodes/COM_BlurNode.h
index 816f359cab1bc36df2c98bba549ff576fbe6455c..35cd676ff509d0c54d8678c88e2b59fe70805c20 100644
--- a/source/blender/compositor/nodes/COM_BlurNode.h
+++ b/source/blender/compositor/nodes/COM_BlurNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_BokehBlurNode.cc b/source/blender/compositor/nodes/COM_BokehBlurNode.cc
index 8f71621c435418f197bf90ad7a02e732602eedc3..31258ddb56ac85135095329ca81d3887ef2d2b69 100644
--- a/source/blender/compositor/nodes/COM_BokehBlurNode.cc
+++ b/source/blender/compositor/nodes/COM_BokehBlurNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_BokehBlurNode.h"
 #include "COM_BokehBlurOperation.h"
diff --git a/source/blender/compositor/nodes/COM_BokehBlurNode.h b/source/blender/compositor/nodes/COM_BokehBlurNode.h
index 869eee44a6fe19bfe2ebd93aea19631f667aa0f4..9cf9c746d40cf7e1158a889f07007a464d5bb394 100644
--- a/source/blender/compositor/nodes/COM_BokehBlurNode.h
+++ b/source/blender/compositor/nodes/COM_BokehBlurNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_BokehImageNode.cc b/source/blender/compositor/nodes/COM_BokehImageNode.cc
index c860ef7a1c93df5d730a79a3b91c4267dca57d17..6bc56aa5184b626ebc4d0677819bbf0365f29082 100644
--- a/source/blender/compositor/nodes/COM_BokehImageNode.cc
+++ b/source/blender/compositor/nodes/COM_BokehImageNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_BokehImageNode.h"
 #include "COM_BokehImageOperation.h"
diff --git a/source/blender/compositor/nodes/COM_BokehImageNode.h b/source/blender/compositor/nodes/COM_BokehImageNode.h
index cb685c932379f00d36fe21fcce2ead554369062e..0ee945ff9459b3c8809fbdfe1be1bbb0d7d02f19 100644
--- a/source/blender/compositor/nodes/COM_BokehImageNode.h
+++ b/source/blender/compositor/nodes/COM_BokehImageNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_BoxMaskNode.cc b/source/blender/compositor/nodes/COM_BoxMaskNode.cc
index 1cf05727a0ada2b9fabf1099c190346207f78544..41717804dba5178bdeb33a062dc50b4a36145370 100644
--- a/source/blender/compositor/nodes/COM_BoxMaskNode.cc
+++ b/source/blender/compositor/nodes/COM_BoxMaskNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_BoxMaskNode.h"
 #include "COM_BoxMaskOperation.h"
diff --git a/source/blender/compositor/nodes/COM_BoxMaskNode.h b/source/blender/compositor/nodes/COM_BoxMaskNode.h
index 68d98f6c0eaba1d394cef3f58c37a8daa32e7454..57a89ad6c6e961be0b725fd0d67304b38b1df3cc 100644
--- a/source/blender/compositor/nodes/COM_BoxMaskNode.h
+++ b/source/blender/compositor/nodes/COM_BoxMaskNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_BrightnessNode.cc b/source/blender/compositor/nodes/COM_BrightnessNode.cc
index 0b87d5d3d491a9e02ac2fbb5a3d4683949af8b3e..88efd541fe9c799485238b7436eb61e0e6cc941d 100644
--- a/source/blender/compositor/nodes/COM_BrightnessNode.cc
+++ b/source/blender/compositor/nodes/COM_BrightnessNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_BrightnessNode.h"
 #include "COM_BrightnessOperation.h"
diff --git a/source/blender/compositor/nodes/COM_BrightnessNode.h b/source/blender/compositor/nodes/COM_BrightnessNode.h
index 82a383557ba6e8f398f64f4308df4d0a50402376..f80ed945af131af709d35e1c07474597b4b3e65b 100644
--- a/source/blender/compositor/nodes/COM_BrightnessNode.h
+++ b/source/blender/compositor/nodes/COM_BrightnessNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ChannelMatteNode.cc b/source/blender/compositor/nodes/COM_ChannelMatteNode.cc
index cf8e8a7392de4948a8b0420bf882ef8802a2da35..81fc638970fcd1b77fdbd403f2a5609973a73d2e 100644
--- a/source/blender/compositor/nodes/COM_ChannelMatteNode.cc
+++ b/source/blender/compositor/nodes/COM_ChannelMatteNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_ChannelMatteNode.h"
 #include "COM_ChannelMatteOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ChannelMatteNode.h b/source/blender/compositor/nodes/COM_ChannelMatteNode.h
index c071c516e6de5b73928ab47608375f7586c9a3cd..4125f6440861307bec7f49caf1a145952a59b56f 100644
--- a/source/blender/compositor/nodes/COM_ChannelMatteNode.h
+++ b/source/blender/compositor/nodes/COM_ChannelMatteNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ChromaMatteNode.cc b/source/blender/compositor/nodes/COM_ChromaMatteNode.cc
index 8db96e0308df6577edfcf3fbc03d6931887f2b76..cbc5a06ce11181a5e6e0ed93912ef48bfe44e8da 100644
--- a/source/blender/compositor/nodes/COM_ChromaMatteNode.cc
+++ b/source/blender/compositor/nodes/COM_ChromaMatteNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ChromaMatteNode.h"
 #include "COM_ChromaMatteOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ChromaMatteNode.h b/source/blender/compositor/nodes/COM_ChromaMatteNode.h
index 854c07c104bd80c0e41edb8c1c68be55693b62a7..a22572cdb94ac2fd432e6fa52a86b9091c770cf7 100644
--- a/source/blender/compositor/nodes/COM_ChromaMatteNode.h
+++ b/source/blender/compositor/nodes/COM_ChromaMatteNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ColorBalanceNode.cc b/source/blender/compositor/nodes/COM_ColorBalanceNode.cc
index e7c43161a00eefbe0f2f056220742c010904ce98..cb009ecc634d947992aa10010f14657ee8e7b1f9 100644
--- a/source/blender/compositor/nodes/COM_ColorBalanceNode.cc
+++ b/source/blender/compositor/nodes/COM_ColorBalanceNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorBalanceNode.h"
 #include "COM_ColorBalanceASCCDLOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ColorBalanceNode.h b/source/blender/compositor/nodes/COM_ColorBalanceNode.h
index 3ac0b7cdee199635374032ac48b4dc66bce110d4..87d859f461da052a9c9d63917dcf7803f53dc67f 100644
--- a/source/blender/compositor/nodes/COM_ColorBalanceNode.h
+++ b/source/blender/compositor/nodes/COM_ColorBalanceNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ColorCorrectionNode.cc b/source/blender/compositor/nodes/COM_ColorCorrectionNode.cc
index 49d8a7fec98b82c8d480fe06499304ef455aed87..2497f1d57bc33b66f7eb683a255a2bd42640155d 100644
--- a/source/blender/compositor/nodes/COM_ColorCorrectionNode.cc
+++ b/source/blender/compositor/nodes/COM_ColorCorrectionNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorCorrectionNode.h"
 #include "COM_ColorCorrectionOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ColorCorrectionNode.h b/source/blender/compositor/nodes/COM_ColorCorrectionNode.h
index 6fe4212e428b1818caf2dc4b33a8f759a30c7fa0..02e1692d71d029a12dbbf821fba3a30026ac12d3 100644
--- a/source/blender/compositor/nodes/COM_ColorCorrectionNode.h
+++ b/source/blender/compositor/nodes/COM_ColorCorrectionNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ColorCurveNode.cc b/source/blender/compositor/nodes/COM_ColorCurveNode.cc
index 5b59b2bee143a5398cdb1c028f534029a2eccce1..ba81d37584675491b3d3956d5b846e855b079bf3 100644
--- a/source/blender/compositor/nodes/COM_ColorCurveNode.cc
+++ b/source/blender/compositor/nodes/COM_ColorCurveNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorCurveNode.h"
 #include "COM_ColorCurveOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ColorCurveNode.h b/source/blender/compositor/nodes/COM_ColorCurveNode.h
index 852f755bf95ceed1bd17b475841a0f6c53d8ae51..4d3cb0738ae95a764aa6f029334fd3020c6909e8 100644
--- a/source/blender/compositor/nodes/COM_ColorCurveNode.h
+++ b/source/blender/compositor/nodes/COM_ColorCurveNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ColorExposureNode.cc b/source/blender/compositor/nodes/COM_ColorExposureNode.cc
index 2f5e6b0a7bfd579916df3fcc1fddec021f8513bd..c4a0764130ac0c3144c0f92753fc068c7e25f5f8 100644
--- a/source/blender/compositor/nodes/COM_ColorExposureNode.cc
+++ b/source/blender/compositor/nodes/COM_ColorExposureNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 #include "COM_ColorExposureNode.h"
 #include "COM_ColorExposureOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ColorExposureNode.h b/source/blender/compositor/nodes/COM_ColorExposureNode.h
index 33b143e06764e8a7935166b778c65d5999ad8b4b..8665e38c419dd4888bf5d46118633670a907159f 100644
--- a/source/blender/compositor/nodes/COM_ColorExposureNode.h
+++ b/source/blender/compositor/nodes/COM_ColorExposureNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ColorMatteNode.cc b/source/blender/compositor/nodes/COM_ColorMatteNode.cc
index 629ae932eb7e04754869a73ebb2ffe8a7440dadd..f8fccd53a9176b8ebe3160d2aea0fee5eb90610a 100644
--- a/source/blender/compositor/nodes/COM_ColorMatteNode.cc
+++ b/source/blender/compositor/nodes/COM_ColorMatteNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorMatteNode.h"
 #include "COM_ColorMatteOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ColorMatteNode.h b/source/blender/compositor/nodes/COM_ColorMatteNode.h
index 3e1bfd607e880ea91ae32bb14da6216020266466..d1c54c807cf06846c51c65cb8353dd12b327fdfa 100644
--- a/source/blender/compositor/nodes/COM_ColorMatteNode.h
+++ b/source/blender/compositor/nodes/COM_ColorMatteNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ColorNode.cc b/source/blender/compositor/nodes/COM_ColorNode.cc
index 2d875d703c7460f56c6ba568d8819c27fae1f476..de6aa2f810d442cc52bfc20701f18bbfb6e0e6cb 100644
--- a/source/blender/compositor/nodes/COM_ColorNode.cc
+++ b/source/blender/compositor/nodes/COM_ColorNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorNode.h"
 #include "COM_SetColorOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ColorNode.h b/source/blender/compositor/nodes/COM_ColorNode.h
index f5b932f63211045a26d0a285d1ab004c2fb159ca..e439698e48dd115f5ea4df150226f47e441c2d05 100644
--- a/source/blender/compositor/nodes/COM_ColorNode.h
+++ b/source/blender/compositor/nodes/COM_ColorNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ColorRampNode.cc b/source/blender/compositor/nodes/COM_ColorRampNode.cc
index 7ae83be65c2be3618f095cbf7cb6bae5c3684cb1..fd91678800aabb7d0c991644c5671c91195cff06 100644
--- a/source/blender/compositor/nodes/COM_ColorRampNode.cc
+++ b/source/blender/compositor/nodes/COM_ColorRampNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorRampNode.h"
 #include "COM_ColorRampOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ColorRampNode.h b/source/blender/compositor/nodes/COM_ColorRampNode.h
index 70e10311b2a03fcf0d7e8fdcaa78e9f43a37b27b..3e13cc3c9c7f659064a1bbadaa948eb70ee35abc 100644
--- a/source/blender/compositor/nodes/COM_ColorRampNode.h
+++ b/source/blender/compositor/nodes/COM_ColorRampNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ColorSpillNode.cc b/source/blender/compositor/nodes/COM_ColorSpillNode.cc
index 063c515b460e3d1ec14c59dacd547edc201a120c..118879ebdcc40f2adc961253825ed16b9b8d7194 100644
--- a/source/blender/compositor/nodes/COM_ColorSpillNode.cc
+++ b/source/blender/compositor/nodes/COM_ColorSpillNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorSpillNode.h"
 #include "COM_ColorSpillOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ColorSpillNode.h b/source/blender/compositor/nodes/COM_ColorSpillNode.h
index 3a9b0e665e871cd79776fcc4b61fb0bca21d797f..e62091d8cbfcd9278fab2eb34a3ac9a1552caaf8 100644
--- a/source/blender/compositor/nodes/COM_ColorSpillNode.h
+++ b/source/blender/compositor/nodes/COM_ColorSpillNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ColorToBWNode.cc b/source/blender/compositor/nodes/COM_ColorToBWNode.cc
index c021ee59b9eae46238accc6be72d44c98f7ce016..281ca7fdfb06f84ba98c1cdc83258a9a3d388b39 100644
--- a/source/blender/compositor/nodes/COM_ColorToBWNode.cc
+++ b/source/blender/compositor/nodes/COM_ColorToBWNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorToBWNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_ColorToBWNode.h b/source/blender/compositor/nodes/COM_ColorToBWNode.h
index 7018f30f559f7682c403847a5974252415c45c8a..2bcefce19eded8aef831414ce3b4b3909e9d53fb 100644
--- a/source/blender/compositor/nodes/COM_ColorToBWNode.h
+++ b/source/blender/compositor/nodes/COM_ColorToBWNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_CombineColorNode.cc b/source/blender/compositor/nodes/COM_CombineColorNode.cc
index a37fc6ad5fa45482a842a1703de41791f1fbb859..0c8748fd2d6ead0246be2921816810c5f7dfbd15 100644
--- a/source/blender/compositor/nodes/COM_CombineColorNode.cc
+++ b/source/blender/compositor/nodes/COM_CombineColorNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_CombineColorNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_CombineColorNode.h b/source/blender/compositor/nodes/COM_CombineColorNode.h
index 3252fc779f4ecb023844cd08057e3522f65f4bfa..2bead24cb02325bfd44c9483cef635846ce27423 100644
--- a/source/blender/compositor/nodes/COM_CombineColorNode.h
+++ b/source/blender/compositor/nodes/COM_CombineColorNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_CombineXYZNode.cc b/source/blender/compositor/nodes/COM_CombineXYZNode.cc
index 2b71b94e192e14ba27e50ff9e8e125928a18a2b6..0b46f7ba0d4a2717ddc7bbb8b3b253af3b8d9c38 100644
--- a/source/blender/compositor/nodes/COM_CombineXYZNode.cc
+++ b/source/blender/compositor/nodes/COM_CombineXYZNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_CombineXYZNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_CombineXYZNode.h b/source/blender/compositor/nodes/COM_CombineXYZNode.h
index c3bb69b03edd28aa574b24f842a95ad01f14d255..8c0190c591288b308fb2f048a4eae8a25e84d862 100644
--- a/source/blender/compositor/nodes/COM_CombineXYZNode.h
+++ b/source/blender/compositor/nodes/COM_CombineXYZNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_CompositorNode.cc b/source/blender/compositor/nodes/COM_CompositorNode.cc
index 5121a7cc123b92ea4be568b040f90d21540cf7da..d9009e313dd91ea61f3d41be82e45e1e2f166113 100644
--- a/source/blender/compositor/nodes/COM_CompositorNode.cc
+++ b/source/blender/compositor/nodes/COM_CompositorNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_CompositorNode.h"
 #include "COM_CompositorOperation.h"
diff --git a/source/blender/compositor/nodes/COM_CompositorNode.h b/source/blender/compositor/nodes/COM_CompositorNode.h
index 68005230ba2d586aeefaea50994bb183acdf8cec..03017e04ecb5bf85bcc5c1a373d961022678ca4f 100644
--- a/source/blender/compositor/nodes/COM_CompositorNode.h
+++ b/source/blender/compositor/nodes/COM_CompositorNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ConvertAlphaNode.cc b/source/blender/compositor/nodes/COM_ConvertAlphaNode.cc
index c2c4b9890076afcc63b774c2730ae3f31dee4aa6..690be1c4551a78b4f392087ac4538ecdf890a6ba 100644
--- a/source/blender/compositor/nodes/COM_ConvertAlphaNode.cc
+++ b/source/blender/compositor/nodes/COM_ConvertAlphaNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_ConvertAlphaNode.h"
 #include "COM_ConvertOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ConvertAlphaNode.h b/source/blender/compositor/nodes/COM_ConvertAlphaNode.h
index 8f26c82c110df2a721a295d924ddcf8d560dab23..2ca56a18897086adc0d4498b54e9defce76fbb81 100644
--- a/source/blender/compositor/nodes/COM_ConvertAlphaNode.h
+++ b/source/blender/compositor/nodes/COM_ConvertAlphaNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ConvertColorSpaceNode.cc b/source/blender/compositor/nodes/COM_ConvertColorSpaceNode.cc
index 4e7bbefc22d973a2f3510f8915195a5b9729356c..219b3acbd049c6496c4c88ebd7298a2ff99f57a6 100644
--- a/source/blender/compositor/nodes/COM_ConvertColorSpaceNode.cc
+++ b/source/blender/compositor/nodes/COM_ConvertColorSpaceNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_ConvertColorSpaceNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_ConvertColorSpaceNode.h b/source/blender/compositor/nodes/COM_ConvertColorSpaceNode.h
index b3460abea27faea780ad526cc0ea9eeeafb27043..7b6d846c670cedd8fa3bb73ce0126fc8c09e11f2 100644
--- a/source/blender/compositor/nodes/COM_ConvertColorSpaceNode.h
+++ b/source/blender/compositor/nodes/COM_ConvertColorSpaceNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_CornerPinNode.cc b/source/blender/compositor/nodes/COM_CornerPinNode.cc
index 0f7b58db89db090b052d7d7b1d85a0917e659850..86e9e518d816f68699867ae67ad377eeb650607b 100644
--- a/source/blender/compositor/nodes/COM_CornerPinNode.cc
+++ b/source/blender/compositor/nodes/COM_CornerPinNode.cc
@@ -1,19 +1,5 @@
-/* This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2014, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. */
 
 #include "COM_CornerPinNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_CornerPinNode.h b/source/blender/compositor/nodes/COM_CornerPinNode.h
index a1b4d107126faef5c0c6537c90a11c354a8b2d12..fe9794a9ddf9141e0ca3db4a227e119a51e91d71 100644
--- a/source/blender/compositor/nodes/COM_CornerPinNode.h
+++ b/source/blender/compositor/nodes/COM_CornerPinNode.h
@@ -1,19 +1,5 @@
-/* This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2014, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_CropNode.cc b/source/blender/compositor/nodes/COM_CropNode.cc
index e33af232f17869c5558bec195e15e4b1aad852c1..fd07b028a0108f1d9c117ee75068d6d873e4e12b 100644
--- a/source/blender/compositor/nodes/COM_CropNode.cc
+++ b/source/blender/compositor/nodes/COM_CropNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_CropNode.h"
 #include "COM_CropOperation.h"
diff --git a/source/blender/compositor/nodes/COM_CropNode.h b/source/blender/compositor/nodes/COM_CropNode.h
index 55324bb37dfb5f0a8619f36f3239928b1a103914..cd452c8f6521db808f320a5b6a63f0a81fbeaac8 100644
--- a/source/blender/compositor/nodes/COM_CropNode.h
+++ b/source/blender/compositor/nodes/COM_CropNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_CryptomatteNode.cc b/source/blender/compositor/nodes/COM_CryptomatteNode.cc
index c360e519cf8b06752e5eb5a99ed22e29dd0e8ee9..b1cae5bfc24f2573279e055667a8bf152818a20b 100644
--- a/source/blender/compositor/nodes/COM_CryptomatteNode.cc
+++ b/source/blender/compositor/nodes/COM_CryptomatteNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2018, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 #include "BKE_node.h"
 
diff --git a/source/blender/compositor/nodes/COM_CryptomatteNode.h b/source/blender/compositor/nodes/COM_CryptomatteNode.h
index 7ca1084886be6a0c126ede4d7d70ca932b084b1a..9d34ccb9e7e52c82a0150ed560790f0701a31498 100644
--- a/source/blender/compositor/nodes/COM_CryptomatteNode.h
+++ b/source/blender/compositor/nodes/COM_CryptomatteNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2018, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_DefocusNode.cc b/source/blender/compositor/nodes/COM_DefocusNode.cc
index 684f9014c3c34df3b96c1d377bcd78ebbbd4e341..26bb79a584634c67484b6f9f5ee4e5dea61eb572 100644
--- a/source/blender/compositor/nodes/COM_DefocusNode.cc
+++ b/source/blender/compositor/nodes/COM_DefocusNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DefocusNode.h"
 #include "COM_BokehImageOperation.h"
diff --git a/source/blender/compositor/nodes/COM_DefocusNode.h b/source/blender/compositor/nodes/COM_DefocusNode.h
index 58993495bee58dd852e261b7d1121209fcb3c3c4..27cc924c44bdb65b766125056dffb8673f256778 100644
--- a/source/blender/compositor/nodes/COM_DefocusNode.h
+++ b/source/blender/compositor/nodes/COM_DefocusNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_DenoiseNode.cc b/source/blender/compositor/nodes/COM_DenoiseNode.cc
index 2ff8870f716662c344329744ab9e4fca1bf6a230..301cb123359d248d6cd78aa259ec01fc489a69f1 100644
--- a/source/blender/compositor/nodes/COM_DenoiseNode.cc
+++ b/source/blender/compositor/nodes/COM_DenoiseNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 #include "COM_DenoiseNode.h"
 #include "COM_DenoiseOperation.h"
 
diff --git a/source/blender/compositor/nodes/COM_DenoiseNode.h b/source/blender/compositor/nodes/COM_DenoiseNode.h
index 7e18c22c1e914fc7ce4baac7db57a2cbae7401e6..394318f503bc07692954d010954b0e453524f909 100644
--- a/source/blender/compositor/nodes/COM_DenoiseNode.h
+++ b/source/blender/compositor/nodes/COM_DenoiseNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_DespeckleNode.cc b/source/blender/compositor/nodes/COM_DespeckleNode.cc
index 12c9d50f2142407c07146c549931066baab56c9e..cbdff384edab6c3ae86ed1b401a65c335d53f00b 100644
--- a/source/blender/compositor/nodes/COM_DespeckleNode.cc
+++ b/source/blender/compositor/nodes/COM_DespeckleNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DespeckleNode.h"
 #include "COM_DespeckleOperation.h"
diff --git a/source/blender/compositor/nodes/COM_DespeckleNode.h b/source/blender/compositor/nodes/COM_DespeckleNode.h
index 2c3af600aed68f3413c662ef48242108da226cef..14ca54efd514ba56d36ffaf491014ba4d062104d 100644
--- a/source/blender/compositor/nodes/COM_DespeckleNode.h
+++ b/source/blender/compositor/nodes/COM_DespeckleNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_DifferenceMatteNode.cc b/source/blender/compositor/nodes/COM_DifferenceMatteNode.cc
index ceb5be7bd08b4134eb56a97528077bcdf0aec329..7c5d1f69fb1e0f26a68b1b7984bc4375d486eb0e 100644
--- a/source/blender/compositor/nodes/COM_DifferenceMatteNode.cc
+++ b/source/blender/compositor/nodes/COM_DifferenceMatteNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DifferenceMatteNode.h"
 #include "COM_DifferenceMatteOperation.h"
diff --git a/source/blender/compositor/nodes/COM_DifferenceMatteNode.h b/source/blender/compositor/nodes/COM_DifferenceMatteNode.h
index f99d4022507c8d0f58c12769f5ff755f31155b67..f0cb70293839973c4236e44b4d33d8715bc28b45 100644
--- a/source/blender/compositor/nodes/COM_DifferenceMatteNode.h
+++ b/source/blender/compositor/nodes/COM_DifferenceMatteNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_DilateErodeNode.cc b/source/blender/compositor/nodes/COM_DilateErodeNode.cc
index b121fcb3724bdc1eb809000297bcdc4893235bf1..ee3ad8f463979cd0978e10e703d91e1a4e76c588 100644
--- a/source/blender/compositor/nodes/COM_DilateErodeNode.cc
+++ b/source/blender/compositor/nodes/COM_DilateErodeNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DilateErodeNode.h"
 #include "COM_AntiAliasOperation.h"
diff --git a/source/blender/compositor/nodes/COM_DilateErodeNode.h b/source/blender/compositor/nodes/COM_DilateErodeNode.h
index df6abe7a6b64b5c584f8321fc6febd78bd1db32e..8c6bb0d2512bb9e96975f85c2b259e06bb97c4ae 100644
--- a/source/blender/compositor/nodes/COM_DilateErodeNode.h
+++ b/source/blender/compositor/nodes/COM_DilateErodeNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_DirectionalBlurNode.cc b/source/blender/compositor/nodes/COM_DirectionalBlurNode.cc
index b8e3e44f41f03a07b17e00f9dc1e39fb667b4008..b9477cc6783ef7d724e242095740a971b2a1315e 100644
--- a/source/blender/compositor/nodes/COM_DirectionalBlurNode.cc
+++ b/source/blender/compositor/nodes/COM_DirectionalBlurNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DirectionalBlurNode.h"
 #include "COM_DirectionalBlurOperation.h"
diff --git a/source/blender/compositor/nodes/COM_DirectionalBlurNode.h b/source/blender/compositor/nodes/COM_DirectionalBlurNode.h
index 96a5122d13482e17bf9bd367b3fc490a1fce4e76..55c2e008038c1a4ad295e52dbbb62e1c4aac20e2 100644
--- a/source/blender/compositor/nodes/COM_DirectionalBlurNode.h
+++ b/source/blender/compositor/nodes/COM_DirectionalBlurNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_DisplaceNode.cc b/source/blender/compositor/nodes/COM_DisplaceNode.cc
index 06208fb7d8959fcbfed16fa1209b9138affa5226..bcc5c8b804591b692e8e881c0145c6fe55f8dd10 100644
--- a/source/blender/compositor/nodes/COM_DisplaceNode.cc
+++ b/source/blender/compositor/nodes/COM_DisplaceNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DisplaceNode.h"
 #include "COM_DisplaceOperation.h"
diff --git a/source/blender/compositor/nodes/COM_DisplaceNode.h b/source/blender/compositor/nodes/COM_DisplaceNode.h
index 394624e8f60cee388044f6a28eb0f8387d213b6c..6cd2a4a40a4b762df7320b6d69e3f160e02e5c0f 100644
--- a/source/blender/compositor/nodes/COM_DisplaceNode.h
+++ b/source/blender/compositor/nodes/COM_DisplaceNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_DistanceMatteNode.cc b/source/blender/compositor/nodes/COM_DistanceMatteNode.cc
index db78e60fbbed31bc56a238eef8407dc78acb76d3..ea0327d3d4603b5c8cbf952fdb7485a449024a4e 100644
--- a/source/blender/compositor/nodes/COM_DistanceMatteNode.cc
+++ b/source/blender/compositor/nodes/COM_DistanceMatteNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DistanceMatteNode.h"
 #include "COM_ConvertOperation.h"
diff --git a/source/blender/compositor/nodes/COM_DistanceMatteNode.h b/source/blender/compositor/nodes/COM_DistanceMatteNode.h
index d12e69d8065b16af48b05e4da35d0ec5d757185a..b1dd2fd4b2e5ff7edae85839e5f6c72dad0e20fa 100644
--- a/source/blender/compositor/nodes/COM_DistanceMatteNode.h
+++ b/source/blender/compositor/nodes/COM_DistanceMatteNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_DoubleEdgeMaskNode.cc b/source/blender/compositor/nodes/COM_DoubleEdgeMaskNode.cc
index b88348ccc601d5aa032952fee07e214ea322e886..eb4510a104cac7be92fab63ccbec9bce322249bf 100644
--- a/source/blender/compositor/nodes/COM_DoubleEdgeMaskNode.cc
+++ b/source/blender/compositor/nodes/COM_DoubleEdgeMaskNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DoubleEdgeMaskNode.h"
 #include "COM_DoubleEdgeMaskOperation.h"
diff --git a/source/blender/compositor/nodes/COM_DoubleEdgeMaskNode.h b/source/blender/compositor/nodes/COM_DoubleEdgeMaskNode.h
index 99b3b1d0546e646b4d7c011c56a85442e09626c0..c55359a8130a7993211395c79e314ccb6606a774 100644
--- a/source/blender/compositor/nodes/COM_DoubleEdgeMaskNode.h
+++ b/source/blender/compositor/nodes/COM_DoubleEdgeMaskNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_EllipseMaskNode.cc b/source/blender/compositor/nodes/COM_EllipseMaskNode.cc
index 1f6e2ab2a6c3964174b1ce6d9e87b2788f7a3099..42b1b20154005cf8f5b0e2ae085adc78601a6543 100644
--- a/source/blender/compositor/nodes/COM_EllipseMaskNode.cc
+++ b/source/blender/compositor/nodes/COM_EllipseMaskNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_EllipseMaskNode.h"
 #include "COM_EllipseMaskOperation.h"
diff --git a/source/blender/compositor/nodes/COM_EllipseMaskNode.h b/source/blender/compositor/nodes/COM_EllipseMaskNode.h
index 4a582b63d919c010eae1b206e727101802025a07..c51cd8da3409db2e6f96466b989f13a61304bf14 100644
--- a/source/blender/compositor/nodes/COM_EllipseMaskNode.h
+++ b/source/blender/compositor/nodes/COM_EllipseMaskNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_FilterNode.cc b/source/blender/compositor/nodes/COM_FilterNode.cc
index 4eca1492fe9449dcca392dd44a9e22476128ccdd..f2efa8caefd047b8a927f213d1d54d9d176562e6 100644
--- a/source/blender/compositor/nodes/COM_FilterNode.cc
+++ b/source/blender/compositor/nodes/COM_FilterNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_FilterNode.h"
 #include "BKE_node.h"
diff --git a/source/blender/compositor/nodes/COM_FilterNode.h b/source/blender/compositor/nodes/COM_FilterNode.h
index c160e11fd9f968ff085532d87c93035d145a3af6..09e53d04d8fdb7cfc8f4e1a05de5c1f84da2bef0 100644
--- a/source/blender/compositor/nodes/COM_FilterNode.h
+++ b/source/blender/compositor/nodes/COM_FilterNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_FlipNode.cc b/source/blender/compositor/nodes/COM_FlipNode.cc
index ec9a4f9419bc4b312fa9e46e289fa0de9df1164e..a7c23a4171439f404a3adfa397dda1a8848a8081 100644
--- a/source/blender/compositor/nodes/COM_FlipNode.cc
+++ b/source/blender/compositor/nodes/COM_FlipNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_FlipNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_FlipNode.h b/source/blender/compositor/nodes/COM_FlipNode.h
index 40dc44edbbe06421f217bb2388f59e97142309bb..3f007a181859e8e93135cc7f0b40b9eb56c7f60a 100644
--- a/source/blender/compositor/nodes/COM_FlipNode.h
+++ b/source/blender/compositor/nodes/COM_FlipNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_GammaNode.cc b/source/blender/compositor/nodes/COM_GammaNode.cc
index 3c4e885ff7671bad2d7d01a9a19ce9249ed62523..baef5611ac7ba21055d584fd3383101b67581f2c 100644
--- a/source/blender/compositor/nodes/COM_GammaNode.cc
+++ b/source/blender/compositor/nodes/COM_GammaNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GammaNode.h"
 #include "COM_GammaOperation.h"
diff --git a/source/blender/compositor/nodes/COM_GammaNode.h b/source/blender/compositor/nodes/COM_GammaNode.h
index 3c7a8ee4983c005bd340e8e41c63d7f149e7b23f..57c31c64d32c000368430a0628eefc3d31983904 100644
--- a/source/blender/compositor/nodes/COM_GammaNode.h
+++ b/source/blender/compositor/nodes/COM_GammaNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_GlareNode.cc b/source/blender/compositor/nodes/COM_GlareNode.cc
index 77b1162f7ccdd72bd3d36a1f25217f4f3ea27d6e..0d7be486b9b5d36f1b1df8a180ddc2dcb59d03a3 100644
--- a/source/blender/compositor/nodes/COM_GlareNode.cc
+++ b/source/blender/compositor/nodes/COM_GlareNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GlareNode.h"
 #include "COM_GlareFogGlowOperation.h"
diff --git a/source/blender/compositor/nodes/COM_GlareNode.h b/source/blender/compositor/nodes/COM_GlareNode.h
index 85e657984cd8b6dc2c618b799c998f287b7b3a08..6370bcc627dbee5c6eca950f86138e090139ca79 100644
--- a/source/blender/compositor/nodes/COM_GlareNode.h
+++ b/source/blender/compositor/nodes/COM_GlareNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_HueSaturationValueCorrectNode.cc b/source/blender/compositor/nodes/COM_HueSaturationValueCorrectNode.cc
index 6cf9a5356c47b4ced7b0b1c964aa931f7674b6e0..8ae415b9c28cdefb6372c8e318a1df0889f1eab8 100644
--- a/source/blender/compositor/nodes/COM_HueSaturationValueCorrectNode.cc
+++ b/source/blender/compositor/nodes/COM_HueSaturationValueCorrectNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_HueSaturationValueCorrectNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_HueSaturationValueCorrectNode.h b/source/blender/compositor/nodes/COM_HueSaturationValueCorrectNode.h
index 1f59c06cb9f563ebf66d2b25cb807ff6c886501b..7ded0d52b268772c9918c0953af55cc33c9b5c80 100644
--- a/source/blender/compositor/nodes/COM_HueSaturationValueCorrectNode.h
+++ b/source/blender/compositor/nodes/COM_HueSaturationValueCorrectNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_HueSaturationValueNode.cc b/source/blender/compositor/nodes/COM_HueSaturationValueNode.cc
index fa296f54d8ffb4837824e83deed69873986ab540..c0112235b1c8fadefceb151320a19f03abd65ce2 100644
--- a/source/blender/compositor/nodes/COM_HueSaturationValueNode.cc
+++ b/source/blender/compositor/nodes/COM_HueSaturationValueNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_HueSaturationValueNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_HueSaturationValueNode.h b/source/blender/compositor/nodes/COM_HueSaturationValueNode.h
index abb7d0afebef43eaad6a416b510d25e8108aa378..708d65e406a8d45c4e3b57d111f2ee788eb9b915 100644
--- a/source/blender/compositor/nodes/COM_HueSaturationValueNode.h
+++ b/source/blender/compositor/nodes/COM_HueSaturationValueNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_IDMaskNode.cc b/source/blender/compositor/nodes/COM_IDMaskNode.cc
index 4d761f25fd3c60823b93dcd1c9d2178833b2714a..f9c284b916c7607d028fcc5773f4db11e9c0a226 100644
--- a/source/blender/compositor/nodes/COM_IDMaskNode.cc
+++ b/source/blender/compositor/nodes/COM_IDMaskNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_IDMaskNode.h"
 #include "COM_IDMaskOperation.h"
diff --git a/source/blender/compositor/nodes/COM_IDMaskNode.h b/source/blender/compositor/nodes/COM_IDMaskNode.h
index 8eba2af715ff51f8c998799642014e4a5f83225a..426b8d349cde64dc8e476b1445b70597c65b4354 100644
--- a/source/blender/compositor/nodes/COM_IDMaskNode.h
+++ b/source/blender/compositor/nodes/COM_IDMaskNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ImageNode.cc b/source/blender/compositor/nodes/COM_ImageNode.cc
index cc1c4109d9e8cba9c715c2e18a9158bb7aa69612..35031888d5c66988be33e491d57d4723f6873e63 100644
--- a/source/blender/compositor/nodes/COM_ImageNode.cc
+++ b/source/blender/compositor/nodes/COM_ImageNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ImageNode.h"
 #include "COM_ConvertOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ImageNode.h b/source/blender/compositor/nodes/COM_ImageNode.h
index 7dd948be9460c19c01d5dab0cc67a780e5597887..d8cf55c97107acc6a11fac47bd28aa47fa6f4f5f 100644
--- a/source/blender/compositor/nodes/COM_ImageNode.h
+++ b/source/blender/compositor/nodes/COM_ImageNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_InpaintNode.cc b/source/blender/compositor/nodes/COM_InpaintNode.cc
index 1feb618d47ad4ad4cf58bbb741c4a982b42f883c..1b899163e4d49f29ae6c487a4de0f5bf93728f5b 100644
--- a/source/blender/compositor/nodes/COM_InpaintNode.cc
+++ b/source/blender/compositor/nodes/COM_InpaintNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_InpaintNode.h"
 #include "COM_InpaintOperation.h"
diff --git a/source/blender/compositor/nodes/COM_InpaintNode.h b/source/blender/compositor/nodes/COM_InpaintNode.h
index 389ca1d56f4f78a583e4323a7b038c018efc824d..b966ccc4ae86af12088fb3dfdf83824930581ba9 100644
--- a/source/blender/compositor/nodes/COM_InpaintNode.h
+++ b/source/blender/compositor/nodes/COM_InpaintNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_InvertNode.cc b/source/blender/compositor/nodes/COM_InvertNode.cc
index ffde5b1e12ebe1970a30d32f28f17d6c7472452e..002136e5c2a7fa071ff2e1c807307c69ca934809 100644
--- a/source/blender/compositor/nodes/COM_InvertNode.cc
+++ b/source/blender/compositor/nodes/COM_InvertNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_InvertNode.h"
 #include "BKE_node.h"
diff --git a/source/blender/compositor/nodes/COM_InvertNode.h b/source/blender/compositor/nodes/COM_InvertNode.h
index 8f2eb258ab5f82f26461a2a09ee8be4a92a8cf33..9896e0633d0ac77607241af4b42191910b7a8d00 100644
--- a/source/blender/compositor/nodes/COM_InvertNode.h
+++ b/source/blender/compositor/nodes/COM_InvertNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_KeyingNode.cc b/source/blender/compositor/nodes/COM_KeyingNode.cc
index d3130fdd2eb5f2c4005bb59e659388209f1b6713..10e6b5597f2fe0f346ab10030feb7ade1440a64a 100644
--- a/source/blender/compositor/nodes/COM_KeyingNode.cc
+++ b/source/blender/compositor/nodes/COM_KeyingNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_KeyingNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_KeyingNode.h b/source/blender/compositor/nodes/COM_KeyingNode.h
index ed70433fea34c3fe1cc33183540ba53925c22cd6..68fc97b67274b3b698593514c68aff88586b14ec 100644
--- a/source/blender/compositor/nodes/COM_KeyingNode.h
+++ b/source/blender/compositor/nodes/COM_KeyingNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_KeyingScreenNode.cc b/source/blender/compositor/nodes/COM_KeyingScreenNode.cc
index bf5d7bb237a8871f428318dffb795ed8470c6399..1e159e1196695b5de556b1aa4c385fb6b5cc9b43 100644
--- a/source/blender/compositor/nodes/COM_KeyingScreenNode.cc
+++ b/source/blender/compositor/nodes/COM_KeyingScreenNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_KeyingScreenNode.h"
 #include "COM_KeyingScreenOperation.h"
diff --git a/source/blender/compositor/nodes/COM_KeyingScreenNode.h b/source/blender/compositor/nodes/COM_KeyingScreenNode.h
index 3704081041fc0bdffb2a583f814ef8a5b8fcdda7..023b3cf6e4741d99aa9ccfb461abf2879cf74e38 100644
--- a/source/blender/compositor/nodes/COM_KeyingScreenNode.h
+++ b/source/blender/compositor/nodes/COM_KeyingScreenNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_LensDistortionNode.cc b/source/blender/compositor/nodes/COM_LensDistortionNode.cc
index 7cef21487df6094096709a98544b12ec562c5e98..3fe1125382eb7da6b784a8bb866eddb59c44d0be 100644
--- a/source/blender/compositor/nodes/COM_LensDistortionNode.cc
+++ b/source/blender/compositor/nodes/COM_LensDistortionNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_LensDistortionNode.h"
 #include "COM_ProjectorLensDistortionOperation.h"
diff --git a/source/blender/compositor/nodes/COM_LensDistortionNode.h b/source/blender/compositor/nodes/COM_LensDistortionNode.h
index 154b8c20b868a628c577840b9fc2e0d5dccd3a28..60216f212169a81b924b0147a24e1dc18c919f8a 100644
--- a/source/blender/compositor/nodes/COM_LensDistortionNode.h
+++ b/source/blender/compositor/nodes/COM_LensDistortionNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_LuminanceMatteNode.cc b/source/blender/compositor/nodes/COM_LuminanceMatteNode.cc
index 645cbe91fd2c521f8c43be573628f129e85ffc82..00ae679581c407438688563a52014ef5a32251f0 100644
--- a/source/blender/compositor/nodes/COM_LuminanceMatteNode.cc
+++ b/source/blender/compositor/nodes/COM_LuminanceMatteNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_LuminanceMatteNode.h"
 #include "COM_LuminanceMatteOperation.h"
diff --git a/source/blender/compositor/nodes/COM_LuminanceMatteNode.h b/source/blender/compositor/nodes/COM_LuminanceMatteNode.h
index 1f934c73d1ed8efa4e396886f209ffb5effc93cb..a2b8ebe3172ef610609f9a7e733938ac88398654 100644
--- a/source/blender/compositor/nodes/COM_LuminanceMatteNode.h
+++ b/source/blender/compositor/nodes/COM_LuminanceMatteNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_MapRangeNode.cc b/source/blender/compositor/nodes/COM_MapRangeNode.cc
index 45f3113ca9ead07383014568b79adf5c83eced3a..6e6508ddca2668edc9c30ded14b4a4d6fd1852a4 100644
--- a/source/blender/compositor/nodes/COM_MapRangeNode.cc
+++ b/source/blender/compositor/nodes/COM_MapRangeNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_MapRangeNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_MapRangeNode.h b/source/blender/compositor/nodes/COM_MapRangeNode.h
index c9323ac00c2a56b825f47bebb623f827ac1a7282..8aff6be6ec6dd13427424e4063f2df58d216ca12 100644
--- a/source/blender/compositor/nodes/COM_MapRangeNode.h
+++ b/source/blender/compositor/nodes/COM_MapRangeNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_MapUVNode.cc b/source/blender/compositor/nodes/COM_MapUVNode.cc
index 9c794165e0b2749e0aafe8b5b4e8b82d22b96aa3..54a24a94ad18de81c807c744947902ab1e7c5494 100644
--- a/source/blender/compositor/nodes/COM_MapUVNode.cc
+++ b/source/blender/compositor/nodes/COM_MapUVNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MapUVNode.h"
 #include "COM_MapUVOperation.h"
diff --git a/source/blender/compositor/nodes/COM_MapUVNode.h b/source/blender/compositor/nodes/COM_MapUVNode.h
index eebfd0e66fa3f2e59f62d35eecd59e51e5b4ff00..0b41b6e6f1a59145ae07475d96df80bd6fdbde55 100644
--- a/source/blender/compositor/nodes/COM_MapUVNode.h
+++ b/source/blender/compositor/nodes/COM_MapUVNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_MapValueNode.cc b/source/blender/compositor/nodes/COM_MapValueNode.cc
index 8c81a902863ba95e0a28960faa6a1d3c5639d55d..be7289e61b1a7ac9eb6a13ae02a1d828e50338bc 100644
--- a/source/blender/compositor/nodes/COM_MapValueNode.cc
+++ b/source/blender/compositor/nodes/COM_MapValueNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MapValueNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_MapValueNode.h b/source/blender/compositor/nodes/COM_MapValueNode.h
index 4516d7eb0160b5439c7a7a2c259869e80fa211a7..6062a17b456f6891c0669fe21d6fe1a64bca0e0e 100644
--- a/source/blender/compositor/nodes/COM_MapValueNode.h
+++ b/source/blender/compositor/nodes/COM_MapValueNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_MaskNode.cc b/source/blender/compositor/nodes/COM_MaskNode.cc
index b1e0506089e07ade1adae8e908901ea0b3954eca..01f98416a9ec768972170aa67e3d3bc64750f475 100644
--- a/source/blender/compositor/nodes/COM_MaskNode.cc
+++ b/source/blender/compositor/nodes/COM_MaskNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_MaskNode.h"
 #include "COM_MaskOperation.h"
diff --git a/source/blender/compositor/nodes/COM_MaskNode.h b/source/blender/compositor/nodes/COM_MaskNode.h
index 0d9d4284b277f1a809c01927c0e06281eb29b632..2271f2faa34d0ed0511df7446a98cfa82bd2fbcd 100644
--- a/source/blender/compositor/nodes/COM_MaskNode.h
+++ b/source/blender/compositor/nodes/COM_MaskNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_MathNode.cc b/source/blender/compositor/nodes/COM_MathNode.cc
index 6102aed0f88f14111a0afcc7892043c8a8df349a..cedda3976e2c3769cbf18b71f6865bd6493bf355 100644
--- a/source/blender/compositor/nodes/COM_MathNode.cc
+++ b/source/blender/compositor/nodes/COM_MathNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MathNode.h"
 #include "COM_MathBaseOperation.h"
diff --git a/source/blender/compositor/nodes/COM_MathNode.h b/source/blender/compositor/nodes/COM_MathNode.h
index 7f60fc03fcdc4e0bd87b1c45b9f543ba4d5ecbbf..f7db849f326ee3100d9f831045e23550a79a14f9 100644
--- a/source/blender/compositor/nodes/COM_MathNode.h
+++ b/source/blender/compositor/nodes/COM_MathNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_MixNode.cc b/source/blender/compositor/nodes/COM_MixNode.cc
index ae7736b4b67bab81816a8096b4976159007dbabc..a44dfc6caa6ca100bdea7a2a101144ea29271c93 100644
--- a/source/blender/compositor/nodes/COM_MixNode.cc
+++ b/source/blender/compositor/nodes/COM_MixNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MixNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_MixNode.h b/source/blender/compositor/nodes/COM_MixNode.h
index 1a6bdf1cf574e9e80e82826140bf29dc96724cf9..ed5ac8bdce3c6f84e8e6957e076c3c5f908d1ca2 100644
--- a/source/blender/compositor/nodes/COM_MixNode.h
+++ b/source/blender/compositor/nodes/COM_MixNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_MovieClipNode.cc b/source/blender/compositor/nodes/COM_MovieClipNode.cc
index b71e379304eca5694a4432a4177046df63c7ad8e..d3f522fd8cdebbf0dd898715992b05214c1d85cb 100644
--- a/source/blender/compositor/nodes/COM_MovieClipNode.cc
+++ b/source/blender/compositor/nodes/COM_MovieClipNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MovieClipNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_MovieClipNode.h b/source/blender/compositor/nodes/COM_MovieClipNode.h
index cf9e7a3e01e84b351050593d9f981c520830196a..de48428a01aa7dab09abe6563989a154226e50cb 100644
--- a/source/blender/compositor/nodes/COM_MovieClipNode.h
+++ b/source/blender/compositor/nodes/COM_MovieClipNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_MovieDistortionNode.cc b/source/blender/compositor/nodes/COM_MovieDistortionNode.cc
index 03b780198cd308280da20ecafe0e044593bd1970..41ecfc24a8aec3bc92134da5b6ffa504c96297c7 100644
--- a/source/blender/compositor/nodes/COM_MovieDistortionNode.cc
+++ b/source/blender/compositor/nodes/COM_MovieDistortionNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MovieDistortionNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_MovieDistortionNode.h b/source/blender/compositor/nodes/COM_MovieDistortionNode.h
index 530b0dd6f970295d7462206c10e0cdd3982ee149..09c5b0da4f01d8e7668735b53f0da624a6547470 100644
--- a/source/blender/compositor/nodes/COM_MovieDistortionNode.h
+++ b/source/blender/compositor/nodes/COM_MovieDistortionNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_NormalNode.cc b/source/blender/compositor/nodes/COM_NormalNode.cc
index f9875c6015c2e64b793fdb730f0881545968a39c..1abdc894c842578b7a22329ec0729479f4ff8c3b 100644
--- a/source/blender/compositor/nodes/COM_NormalNode.cc
+++ b/source/blender/compositor/nodes/COM_NormalNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_NormalNode.h"
 #include "COM_DotproductOperation.h"
diff --git a/source/blender/compositor/nodes/COM_NormalNode.h b/source/blender/compositor/nodes/COM_NormalNode.h
index 2fcbb280c203b06a293ddb47a0a712d50ccb72cf..36e1f39b9d3c164d51abcbedc92e696551e312a6 100644
--- a/source/blender/compositor/nodes/COM_NormalNode.h
+++ b/source/blender/compositor/nodes/COM_NormalNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_NormalizeNode.cc b/source/blender/compositor/nodes/COM_NormalizeNode.cc
index 0dbd9e1837c6d6a616c5ac0b543ac79883159313..c69734f77233d60badfbd1897fb5de9c64304c76 100644
--- a/source/blender/compositor/nodes/COM_NormalizeNode.cc
+++ b/source/blender/compositor/nodes/COM_NormalizeNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_NormalizeNode.h"
 #include "COM_NormalizeOperation.h"
diff --git a/source/blender/compositor/nodes/COM_NormalizeNode.h b/source/blender/compositor/nodes/COM_NormalizeNode.h
index 50d3b939b307ea81eddecb2a786a3ad94c47cebc..991ba8cf582462f971ce3be22178a07a6059fe39 100644
--- a/source/blender/compositor/nodes/COM_NormalizeNode.h
+++ b/source/blender/compositor/nodes/COM_NormalizeNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_OutputFileNode.cc b/source/blender/compositor/nodes/COM_OutputFileNode.cc
index 1a9908d4a93f052a00cf44c16b20a186033361d2..b0568dc308e2304d1e49d542fe46cfac64589e5f 100644
--- a/source/blender/compositor/nodes/COM_OutputFileNode.cc
+++ b/source/blender/compositor/nodes/COM_OutputFileNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_OutputFileNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_OutputFileNode.h b/source/blender/compositor/nodes/COM_OutputFileNode.h
index 4c5575cc6b97cb13e836a7a542e97d89165fc151..be2464c1888a09700acdb191e923c27b029a662f 100644
--- a/source/blender/compositor/nodes/COM_OutputFileNode.h
+++ b/source/blender/compositor/nodes/COM_OutputFileNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_PixelateNode.cc b/source/blender/compositor/nodes/COM_PixelateNode.cc
index 251ef7b192a5cc56432b60aa7cba8e82386bff83..6ea83b9a89d101f0c1ea97cc59de2019f054f125 100644
--- a/source/blender/compositor/nodes/COM_PixelateNode.cc
+++ b/source/blender/compositor/nodes/COM_PixelateNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_PixelateNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_PixelateNode.h b/source/blender/compositor/nodes/COM_PixelateNode.h
index c52a73cafa6f5c9e10d7ee71763281695d3bde1c..62300abb3397401b24f835ef53ba9fe9050d9fa3 100644
--- a/source/blender/compositor/nodes/COM_PixelateNode.h
+++ b/source/blender/compositor/nodes/COM_PixelateNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_PlaneTrackDeformNode.cc b/source/blender/compositor/nodes/COM_PlaneTrackDeformNode.cc
index 0d2623f6e8b48e3a111be2fe563e545c9b96c2cd..a2037812677f972bfe01ea3f4f4d7dc16fb2f10d 100644
--- a/source/blender/compositor/nodes/COM_PlaneTrackDeformNode.cc
+++ b/source/blender/compositor/nodes/COM_PlaneTrackDeformNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #include "COM_PlaneTrackDeformNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_PlaneTrackDeformNode.h b/source/blender/compositor/nodes/COM_PlaneTrackDeformNode.h
index 16367423454909776efa18d76c23ebea0a4eaa60..c9d08ae9966d90e3e4cce21e8128f0c941d006cf 100644
--- a/source/blender/compositor/nodes/COM_PlaneTrackDeformNode.h
+++ b/source/blender/compositor/nodes/COM_PlaneTrackDeformNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_PosterizeNode.cc b/source/blender/compositor/nodes/COM_PosterizeNode.cc
index c055a954c018709a2cf89c7138472f83f7d9cbf0..4e11de553344a161c76e4c901e83f30d952be508 100644
--- a/source/blender/compositor/nodes/COM_PosterizeNode.cc
+++ b/source/blender/compositor/nodes/COM_PosterizeNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 #include "COM_PosterizeNode.h"
 #include "COM_PosterizeOperation.h"
diff --git a/source/blender/compositor/nodes/COM_PosterizeNode.h b/source/blender/compositor/nodes/COM_PosterizeNode.h
index d19e598632a5bc5e7d124d9c495b28ec6d19c0f1..da211542049e492b8a1977b6f97ecb1874e433ac 100644
--- a/source/blender/compositor/nodes/COM_PosterizeNode.h
+++ b/source/blender/compositor/nodes/COM_PosterizeNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_RenderLayersNode.cc b/source/blender/compositor/nodes/COM_RenderLayersNode.cc
index 4b82c5cbc21f639b551ec1eb3d65593cf5dc68b3..274f8be5685a39edec60539f3f6b9c7554eadc6f 100644
--- a/source/blender/compositor/nodes/COM_RenderLayersNode.cc
+++ b/source/blender/compositor/nodes/COM_RenderLayersNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_RenderLayersNode.h"
 #include "COM_SetColorOperation.h"
diff --git a/source/blender/compositor/nodes/COM_RenderLayersNode.h b/source/blender/compositor/nodes/COM_RenderLayersNode.h
index 33e61c583362795692228494e1565a6f8e0d6280..1246a0ae882fa194b91731f26063af95e398878d 100644
--- a/source/blender/compositor/nodes/COM_RenderLayersNode.h
+++ b/source/blender/compositor/nodes/COM_RenderLayersNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_RotateNode.cc b/source/blender/compositor/nodes/COM_RotateNode.cc
index 64f49893335cc540d4ec8ff7c44ff1544300eed4..12ca0f673e9dae3ede64f6fda18f07fa1ff7414a 100644
--- a/source/blender/compositor/nodes/COM_RotateNode.cc
+++ b/source/blender/compositor/nodes/COM_RotateNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_RotateNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_RotateNode.h b/source/blender/compositor/nodes/COM_RotateNode.h
index fa50cd1f689aeac7ab4d7be0fb0538d547cc026d..183a37d2ac5ae1e8981f29710938d9556117604d 100644
--- a/source/blender/compositor/nodes/COM_RotateNode.h
+++ b/source/blender/compositor/nodes/COM_RotateNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ScaleNode.cc b/source/blender/compositor/nodes/COM_ScaleNode.cc
index 56f1d998db8d5910fb5158457547075af1647de6..6eea61b1568c616226bccd260727ec6bbe7fec08 100644
--- a/source/blender/compositor/nodes/COM_ScaleNode.cc
+++ b/source/blender/compositor/nodes/COM_ScaleNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ScaleNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_ScaleNode.h b/source/blender/compositor/nodes/COM_ScaleNode.h
index 7800a7acb8b201312d20145c7944803f00ac4f1a..5454a5181786582efb016a0280f90b6a7a525e13 100644
--- a/source/blender/compositor/nodes/COM_ScaleNode.h
+++ b/source/blender/compositor/nodes/COM_ScaleNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_SceneTimeNode.cc b/source/blender/compositor/nodes/COM_SceneTimeNode.cc
index 533f30918ca0f7a0d39c85596656d8ddf9a971b2..edd6efdb67b66d8b4a59183de06042c50a8faf97 100644
--- a/source/blender/compositor/nodes/COM_SceneTimeNode.cc
+++ b/source/blender/compositor/nodes/COM_SceneTimeNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2022, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. */
 
 #include "COM_SceneTimeNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_SceneTimeNode.h b/source/blender/compositor/nodes/COM_SceneTimeNode.h
index 62c502d26d2138493099f57b8a197036de29ba60..e92a40ac77178cbd5b28819196f1effa1a1175ec 100644
--- a/source/blender/compositor/nodes/COM_SceneTimeNode.h
+++ b/source/blender/compositor/nodes/COM_SceneTimeNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2022, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_SeparateColorNode.cc b/source/blender/compositor/nodes/COM_SeparateColorNode.cc
index 046a813895e922fbd8424b302487176b4abd0829..221d80e67f2e2a3726c9446b2303f884a96e85d4 100644
--- a/source/blender/compositor/nodes/COM_SeparateColorNode.cc
+++ b/source/blender/compositor/nodes/COM_SeparateColorNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SeparateColorNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_SeparateColorNode.h b/source/blender/compositor/nodes/COM_SeparateColorNode.h
index 0dfcd67677208ccdec2612b11d85c656c065e479..78ab0959f433e13d26abcce00fc7bb0e20ac9f6f 100644
--- a/source/blender/compositor/nodes/COM_SeparateColorNode.h
+++ b/source/blender/compositor/nodes/COM_SeparateColorNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_SeparateXYZNode.cc b/source/blender/compositor/nodes/COM_SeparateXYZNode.cc
index 749116d6217603bc8b35cd8b11646ba7dbb8c212..4e7704dcdc872f5924ef01a1f5c19b34852026f2 100644
--- a/source/blender/compositor/nodes/COM_SeparateXYZNode.cc
+++ b/source/blender/compositor/nodes/COM_SeparateXYZNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_SeparateXYZNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_SeparateXYZNode.h b/source/blender/compositor/nodes/COM_SeparateXYZNode.h
index 1efa017d9e31f31046d3be85d21d72d15383087e..a5ef1f9948028270277e634594be728ab0b231eb 100644
--- a/source/blender/compositor/nodes/COM_SeparateXYZNode.h
+++ b/source/blender/compositor/nodes/COM_SeparateXYZNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_SetAlphaNode.cc b/source/blender/compositor/nodes/COM_SetAlphaNode.cc
index 58b8df98bc8ebd142728b3ff7b120705dbbef4e6..45a68f985515570143497487af1e7db819dbb2be 100644
--- a/source/blender/compositor/nodes/COM_SetAlphaNode.cc
+++ b/source/blender/compositor/nodes/COM_SetAlphaNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SetAlphaNode.h"
 #include "COM_SetAlphaMultiplyOperation.h"
diff --git a/source/blender/compositor/nodes/COM_SetAlphaNode.h b/source/blender/compositor/nodes/COM_SetAlphaNode.h
index 9e369838bbe054a1e4f944141a921901016d34f8..ee4734bdb14f6a5e6f1720459b06e39c9bd2729d 100644
--- a/source/blender/compositor/nodes/COM_SetAlphaNode.h
+++ b/source/blender/compositor/nodes/COM_SetAlphaNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_SocketProxyNode.cc b/source/blender/compositor/nodes/COM_SocketProxyNode.cc
index e7c8a90a48bfd274659587d41541996f8b1302dd..97e29e5b5a655d28348637686d93610bdadf7bff 100644
--- a/source/blender/compositor/nodes/COM_SocketProxyNode.cc
+++ b/source/blender/compositor/nodes/COM_SocketProxyNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SocketProxyNode.h"
 #include "COM_ReadBufferOperation.h"
diff --git a/source/blender/compositor/nodes/COM_SocketProxyNode.h b/source/blender/compositor/nodes/COM_SocketProxyNode.h
index 50079ed4718d4bbbe1cd27c359185ff1500f79c2..d6c844cea98689104fb42df34acf568f12847666 100644
--- a/source/blender/compositor/nodes/COM_SocketProxyNode.h
+++ b/source/blender/compositor/nodes/COM_SocketProxyNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_SplitViewerNode.cc b/source/blender/compositor/nodes/COM_SplitViewerNode.cc
index c3234fad0fbeefd48d5d00086a799ae2d61c7146..0e7db05980ac57e2107339e5b7b7f73d115c7b89 100644
--- a/source/blender/compositor/nodes/COM_SplitViewerNode.cc
+++ b/source/blender/compositor/nodes/COM_SplitViewerNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SplitViewerNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_SplitViewerNode.h b/source/blender/compositor/nodes/COM_SplitViewerNode.h
index 579eca9d8e1c1903125a4f428c857d69b3070883..723630286123e4fee71bccddd84bffd11fb19187 100644
--- a/source/blender/compositor/nodes/COM_SplitViewerNode.h
+++ b/source/blender/compositor/nodes/COM_SplitViewerNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_Stabilize2dNode.cc b/source/blender/compositor/nodes/COM_Stabilize2dNode.cc
index 9892c4f5c050cd334fdf3104afda391f684d3418..bcb1cf2accc1f00b51d9e9716e690f214c4be15c 100644
--- a/source/blender/compositor/nodes/COM_Stabilize2dNode.cc
+++ b/source/blender/compositor/nodes/COM_Stabilize2dNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_Stabilize2dNode.h"
 #include "COM_MovieClipAttributeOperation.h"
diff --git a/source/blender/compositor/nodes/COM_Stabilize2dNode.h b/source/blender/compositor/nodes/COM_Stabilize2dNode.h
index 0c6afb272e9ee9a51c11c3270f50eaaef4822114..f529ca96837f2009a9fe8b5b300a9460af26e827 100644
--- a/source/blender/compositor/nodes/COM_Stabilize2dNode.h
+++ b/source/blender/compositor/nodes/COM_Stabilize2dNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_SunBeamsNode.cc b/source/blender/compositor/nodes/COM_SunBeamsNode.cc
index ba42b79f3077a2df83c458f0e90ada41ef250d50..197098f2ff4a96a15034f0f323caf263b93928f0 100644
--- a/source/blender/compositor/nodes/COM_SunBeamsNode.cc
+++ b/source/blender/compositor/nodes/COM_SunBeamsNode.cc
@@ -1,19 +1,5 @@
-/* This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2014, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. */
 
 #include "COM_SunBeamsNode.h"
 #include "COM_SunBeamsOperation.h"
diff --git a/source/blender/compositor/nodes/COM_SunBeamsNode.h b/source/blender/compositor/nodes/COM_SunBeamsNode.h
index 478b5ce39f88fa22645eab45ad02a8175f53aef5..04c8f57124cbf4b6a0e601d48e0144c23e251f46 100644
--- a/source/blender/compositor/nodes/COM_SunBeamsNode.h
+++ b/source/blender/compositor/nodes/COM_SunBeamsNode.h
@@ -1,19 +1,5 @@
-/* This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2014, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_SwitchNode.cc b/source/blender/compositor/nodes/COM_SwitchNode.cc
index d0bc0f6dea2b234a4b43d6c46c9e6e2557335e0a..067168cbc82c997ef71d65d18c320c935f76dbf1 100644
--- a/source/blender/compositor/nodes/COM_SwitchNode.cc
+++ b/source/blender/compositor/nodes/COM_SwitchNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SwitchNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_SwitchNode.h b/source/blender/compositor/nodes/COM_SwitchNode.h
index eafdeb4ac742f6d7e58c84e73f400aebba5a0e8a..2f638e6382945b71dbfc94c0397f0bb36e9fc987 100644
--- a/source/blender/compositor/nodes/COM_SwitchNode.h
+++ b/source/blender/compositor/nodes/COM_SwitchNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_SwitchViewNode.cc b/source/blender/compositor/nodes/COM_SwitchViewNode.cc
index 735ccaf3513e9f20a375718564f938db916a2a9c..ed9e311f1b46da325a93048596681b3d02566b8f 100644
--- a/source/blender/compositor/nodes/COM_SwitchViewNode.cc
+++ b/source/blender/compositor/nodes/COM_SwitchViewNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2015, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. */
 
 #include "COM_SwitchViewNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_SwitchViewNode.h b/source/blender/compositor/nodes/COM_SwitchViewNode.h
index 227c076f1810a2238fa0e7633313c9b2dc1fd359..fe24e7be3744e7b4719f0b481311218e4711f47a 100644
--- a/source/blender/compositor/nodes/COM_SwitchViewNode.h
+++ b/source/blender/compositor/nodes/COM_SwitchViewNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2015, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_TextureNode.cc b/source/blender/compositor/nodes/COM_TextureNode.cc
index ca57680781f5e76bd42f1a530af54fb390f397e5..216df59cc476e14d22332c578eb1386edb94eb5d 100644
--- a/source/blender/compositor/nodes/COM_TextureNode.cc
+++ b/source/blender/compositor/nodes/COM_TextureNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_TextureNode.h"
 #include "COM_TextureOperation.h"
diff --git a/source/blender/compositor/nodes/COM_TextureNode.h b/source/blender/compositor/nodes/COM_TextureNode.h
index bd477e6c6e64309e5c86630333a9fee3f6926ae0..8fa96919972a2d1bad48a243d6709685cdc065bf 100644
--- a/source/blender/compositor/nodes/COM_TextureNode.h
+++ b/source/blender/compositor/nodes/COM_TextureNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_TimeNode.cc b/source/blender/compositor/nodes/COM_TimeNode.cc
index 0d1532f62f942c37209b59809eb41e45061351df..b3dbd74b795f4bbb3ad7d885b635aa38b80ed020 100644
--- a/source/blender/compositor/nodes/COM_TimeNode.cc
+++ b/source/blender/compositor/nodes/COM_TimeNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_TimeNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_TimeNode.h b/source/blender/compositor/nodes/COM_TimeNode.h
index 5c5a0c98058766dc67f28c6b83ee8609e4e41113..099e2913c15433bfa5999ebafd3bf1013739d8d4 100644
--- a/source/blender/compositor/nodes/COM_TimeNode.h
+++ b/source/blender/compositor/nodes/COM_TimeNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_TonemapNode.cc b/source/blender/compositor/nodes/COM_TonemapNode.cc
index 54ba84d46bddc9a6121b9835cada1a66c83acd96..d20b969816324eade9a0a88a35b41f944808f98b 100644
--- a/source/blender/compositor/nodes/COM_TonemapNode.cc
+++ b/source/blender/compositor/nodes/COM_TonemapNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_TonemapNode.h"
 #include "COM_TonemapOperation.h"
diff --git a/source/blender/compositor/nodes/COM_TonemapNode.h b/source/blender/compositor/nodes/COM_TonemapNode.h
index 3c67472bf988a4f863c7f3e93d7d22e8de862788..a0f8a2a7e095591ace53ece3e129bc584b77bb60 100644
--- a/source/blender/compositor/nodes/COM_TonemapNode.h
+++ b/source/blender/compositor/nodes/COM_TonemapNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_TrackPositionNode.cc b/source/blender/compositor/nodes/COM_TrackPositionNode.cc
index ced09d8535f32dcb6efcbf61aedc3881f1cb71c0..1143ce81c80e42b1dfa5bc43a122ea3e7b04af02 100644
--- a/source/blender/compositor/nodes/COM_TrackPositionNode.cc
+++ b/source/blender/compositor/nodes/COM_TrackPositionNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_TrackPositionNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_TrackPositionNode.h b/source/blender/compositor/nodes/COM_TrackPositionNode.h
index d0b1648b0c99a30c410672ca41e26a3aa00cd954..c8ffcf5ae28d1e9a62643d356649c454d1c581bb 100644
--- a/source/blender/compositor/nodes/COM_TrackPositionNode.h
+++ b/source/blender/compositor/nodes/COM_TrackPositionNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_TransformNode.cc b/source/blender/compositor/nodes/COM_TransformNode.cc
index cd60e8c17db9b332955e50d3fd4f7b8855169b0d..08d4f7cae6a8d0793629262c174b2e11d12f839f 100644
--- a/source/blender/compositor/nodes/COM_TransformNode.cc
+++ b/source/blender/compositor/nodes/COM_TransformNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_TransformNode.h"
 #include "COM_RotateOperation.h"
diff --git a/source/blender/compositor/nodes/COM_TransformNode.h b/source/blender/compositor/nodes/COM_TransformNode.h
index 66255d63813b515248ffa30713efd120cba90f11..627db2bcef6ec3779216f08410deecb356ff77e3 100644
--- a/source/blender/compositor/nodes/COM_TransformNode.h
+++ b/source/blender/compositor/nodes/COM_TransformNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_TranslateNode.cc b/source/blender/compositor/nodes/COM_TranslateNode.cc
index b9f96d92942c1f364ecd539b9bb68b86c3cd6491..50c5b4c0d2c013269d40501e0b58a312cea5147c 100644
--- a/source/blender/compositor/nodes/COM_TranslateNode.cc
+++ b/source/blender/compositor/nodes/COM_TranslateNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_TranslateNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_TranslateNode.h b/source/blender/compositor/nodes/COM_TranslateNode.h
index 5ccbb01f3f0cb6f8d26f3ce19c6f9a528cff5c04..c48bb1515d12d217e154285dd5f15a7759496326 100644
--- a/source/blender/compositor/nodes/COM_TranslateNode.h
+++ b/source/blender/compositor/nodes/COM_TranslateNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ValueNode.cc b/source/blender/compositor/nodes/COM_ValueNode.cc
index 892a68dabcc6374d8aac869ac56c26d136fe3f84..34799992ccc1ffa7a783916d363cfbdbf7def2ff 100644
--- a/source/blender/compositor/nodes/COM_ValueNode.cc
+++ b/source/blender/compositor/nodes/COM_ValueNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ValueNode.h"
 #include "COM_SetValueOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ValueNode.h b/source/blender/compositor/nodes/COM_ValueNode.h
index d70013c48afa196ef941748be73db77ec2fc9c84..b0655eb22c4d4976195ab30d8ac1d7d409f8a473 100644
--- a/source/blender/compositor/nodes/COM_ValueNode.h
+++ b/source/blender/compositor/nodes/COM_ValueNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_VectorBlurNode.cc b/source/blender/compositor/nodes/COM_VectorBlurNode.cc
index b3f32465a34d83e152678ef28ca5084960bb5424..f8a2a90ca81f65ced319526fabde0c0e7f1c70b3 100644
--- a/source/blender/compositor/nodes/COM_VectorBlurNode.cc
+++ b/source/blender/compositor/nodes/COM_VectorBlurNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_VectorBlurNode.h"
 #include "COM_VectorBlurOperation.h"
diff --git a/source/blender/compositor/nodes/COM_VectorBlurNode.h b/source/blender/compositor/nodes/COM_VectorBlurNode.h
index fb8a70ab2ec98e43fa0c592c16cf024ab93f1771..9db0534dc7981abe44ab11efbc1864181a635485 100644
--- a/source/blender/compositor/nodes/COM_VectorBlurNode.h
+++ b/source/blender/compositor/nodes/COM_VectorBlurNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_VectorCurveNode.cc b/source/blender/compositor/nodes/COM_VectorCurveNode.cc
index d064c5787fdcc1f98f82deadf32344510d545240..c0871ab21e1595429b7dca2c92df88cf33c931a5 100644
--- a/source/blender/compositor/nodes/COM_VectorCurveNode.cc
+++ b/source/blender/compositor/nodes/COM_VectorCurveNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_VectorCurveNode.h"
 #include "COM_VectorCurveOperation.h"
diff --git a/source/blender/compositor/nodes/COM_VectorCurveNode.h b/source/blender/compositor/nodes/COM_VectorCurveNode.h
index 901bd6f64b9e45cb73f2a8ad984622a01683e18a..6e39c1d3fd02332c38c2b69c6b8921b318e5eb13 100644
--- a/source/blender/compositor/nodes/COM_VectorCurveNode.h
+++ b/source/blender/compositor/nodes/COM_VectorCurveNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ViewLevelsNode.cc b/source/blender/compositor/nodes/COM_ViewLevelsNode.cc
index 79d535fc58ae636e8ebadd916d68e887e25d965a..a28ba8476600cad3754da7b41a42ab544efbc9c7 100644
--- a/source/blender/compositor/nodes/COM_ViewLevelsNode.cc
+++ b/source/blender/compositor/nodes/COM_ViewLevelsNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ViewLevelsNode.h"
 #include "COM_CalculateStandardDeviationOperation.h"
diff --git a/source/blender/compositor/nodes/COM_ViewLevelsNode.h b/source/blender/compositor/nodes/COM_ViewLevelsNode.h
index 5415bbb2ee9ebccd151e1f3f2a827f6f906c46f4..ccd3a68ab151d8cb94319261429a2894e69012fc 100644
--- a/source/blender/compositor/nodes/COM_ViewLevelsNode.h
+++ b/source/blender/compositor/nodes/COM_ViewLevelsNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ViewerNode.cc b/source/blender/compositor/nodes/COM_ViewerNode.cc
index 7efb23b849d935db334d8a61b921e858b3ed825d..1b335abc4d7b0acf8499633b40b2ba0b0515b5fb 100644
--- a/source/blender/compositor/nodes/COM_ViewerNode.cc
+++ b/source/blender/compositor/nodes/COM_ViewerNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ViewerNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_ViewerNode.h b/source/blender/compositor/nodes/COM_ViewerNode.h
index ce9076666bc0a71569e4f8f82b9d829f5cf90de1..2ece7bde90bbda430edd19ccb7059e6f9f75a7ed 100644
--- a/source/blender/compositor/nodes/COM_ViewerNode.h
+++ b/source/blender/compositor/nodes/COM_ViewerNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/nodes/COM_ZCombineNode.cc b/source/blender/compositor/nodes/COM_ZCombineNode.cc
index 52cb1451ba125c6c6577e6a7135729e5544d0907..ba1ea1e85fee04651f4bee1f684dc20e4dffe61a 100644
--- a/source/blender/compositor/nodes/COM_ZCombineNode.cc
+++ b/source/blender/compositor/nodes/COM_ZCombineNode.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ZCombineNode.h"
 
diff --git a/source/blender/compositor/nodes/COM_ZCombineNode.h b/source/blender/compositor/nodes/COM_ZCombineNode.h
index 4761b336fc1bde2d1e9456513ade663c0122ea87..97bd93bd4ccca619f392dc5b6f9fa6dbaf5b927f 100644
--- a/source/blender/compositor/nodes/COM_ZCombineNode.h
+++ b/source/blender/compositor/nodes/COM_ZCombineNode.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_AlphaOverKeyOperation.cc b/source/blender/compositor/operations/COM_AlphaOverKeyOperation.cc
index 5b8d376cf790accdd1a226c76e67dce3dcd7a938..53de55e77bd968583f299129a7ba000b55729580 100644
--- a/source/blender/compositor/operations/COM_AlphaOverKeyOperation.cc
+++ b/source/blender/compositor/operations/COM_AlphaOverKeyOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_AlphaOverKeyOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_AlphaOverKeyOperation.h b/source/blender/compositor/operations/COM_AlphaOverKeyOperation.h
index cfcb655ceca43aa6a74f202dd1d15e19ac0517fc..c3714595eca33899e3d13793238462c62e0befe9 100644
--- a/source/blender/compositor/operations/COM_AlphaOverKeyOperation.h
+++ b/source/blender/compositor/operations/COM_AlphaOverKeyOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_AlphaOverMixedOperation.cc b/source/blender/compositor/operations/COM_AlphaOverMixedOperation.cc
index 42efca996ab8a0685b5aacffb6aef088e3e577c8..728dd3050caa7b65055a9c1dd7f6feedd9f2dad1 100644
--- a/source/blender/compositor/operations/COM_AlphaOverMixedOperation.cc
+++ b/source/blender/compositor/operations/COM_AlphaOverMixedOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_AlphaOverMixedOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_AlphaOverMixedOperation.h b/source/blender/compositor/operations/COM_AlphaOverMixedOperation.h
index 32ff77fdecd94f2332efc7bf6e8eb57fcde70149..6cee71e87fded733c941e1c9195607ec1285e3f1 100644
--- a/source/blender/compositor/operations/COM_AlphaOverMixedOperation.h
+++ b/source/blender/compositor/operations/COM_AlphaOverMixedOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_AlphaOverPremultiplyOperation.cc b/source/blender/compositor/operations/COM_AlphaOverPremultiplyOperation.cc
index a627705fab5ed900214fbdde7db176c0aaf12b34..b4e7d20384a64d97fbe21146ca4637e953a1aa47 100644
--- a/source/blender/compositor/operations/COM_AlphaOverPremultiplyOperation.cc
+++ b/source/blender/compositor/operations/COM_AlphaOverPremultiplyOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_AlphaOverPremultiplyOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_AlphaOverPremultiplyOperation.h b/source/blender/compositor/operations/COM_AlphaOverPremultiplyOperation.h
index cc4cb615de898a7aff4c70430de1ee166d680eb0..544e9748f9863cb27048f8581bc0f8fe08b9becc 100644
--- a/source/blender/compositor/operations/COM_AlphaOverPremultiplyOperation.h
+++ b/source/blender/compositor/operations/COM_AlphaOverPremultiplyOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_AntiAliasOperation.cc b/source/blender/compositor/operations/COM_AntiAliasOperation.cc
index 2695e47aa60e72e84d4306603707d5b5c69a7c90..0c297c20eef0ccf0cde1c1c2f79895c597bd074f 100644
--- a/source/blender/compositor/operations/COM_AntiAliasOperation.cc
+++ b/source/blender/compositor/operations/COM_AntiAliasOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_AntiAliasOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_AntiAliasOperation.h b/source/blender/compositor/operations/COM_AntiAliasOperation.h
index 0a6a63bf57e1ace8c32072a25e98e1c9360013e3..121ad23c265d407a88e586d6ae48bcaf65e3037e 100644
--- a/source/blender/compositor/operations/COM_AntiAliasOperation.h
+++ b/source/blender/compositor/operations/COM_AntiAliasOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_BilateralBlurOperation.cc b/source/blender/compositor/operations/COM_BilateralBlurOperation.cc
index 32780ad4ea8a5e33b92bafd297608a6a59ae570b..3711851e8f50716bda4e76ed8810d8fbdbc6d966 100644
--- a/source/blender/compositor/operations/COM_BilateralBlurOperation.cc
+++ b/source/blender/compositor/operations/COM_BilateralBlurOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_BilateralBlurOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_BilateralBlurOperation.h b/source/blender/compositor/operations/COM_BilateralBlurOperation.h
index 42df82a5296f8aabbddf583e2708a6fa5fe378a4..fdab4792178759a41b99919df527b4cbba5484e4 100644
--- a/source/blender/compositor/operations/COM_BilateralBlurOperation.h
+++ b/source/blender/compositor/operations/COM_BilateralBlurOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_BlurBaseOperation.cc b/source/blender/compositor/operations/COM_BlurBaseOperation.cc
index 702733498c87fddaf4c0c68f232451f1b988027b..b278997eced3336d0faf5111d5350f802c151131 100644
--- a/source/blender/compositor/operations/COM_BlurBaseOperation.cc
+++ b/source/blender/compositor/operations/COM_BlurBaseOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_BlurBaseOperation.h"
 #include "COM_ConstantOperation.h"
diff --git a/source/blender/compositor/operations/COM_BlurBaseOperation.h b/source/blender/compositor/operations/COM_BlurBaseOperation.h
index e12c542708286ee253300962e4dc8a2d0bfdebdf..e6e846c033d0852114bde815125d97d88ab8a99a 100644
--- a/source/blender/compositor/operations/COM_BlurBaseOperation.h
+++ b/source/blender/compositor/operations/COM_BlurBaseOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_BokehBlurOperation.cc b/source/blender/compositor/operations/COM_BokehBlurOperation.cc
index 3c8dd94c09453b3d175eeaf1b0b5fce622f2ba4f..4f1cf0e449aad7ceb4accd1e0ad475ee3e32ec8d 100644
--- a/source/blender/compositor/operations/COM_BokehBlurOperation.cc
+++ b/source/blender/compositor/operations/COM_BokehBlurOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_BokehBlurOperation.h"
 #include "COM_ConstantOperation.h"
diff --git a/source/blender/compositor/operations/COM_BokehBlurOperation.h b/source/blender/compositor/operations/COM_BokehBlurOperation.h
index 5f6a880f8908a2c2a2e45bf6579a65523225481d..98665381c577371d852dc45c2a8f61d37d4bc6c5 100644
--- a/source/blender/compositor/operations/COM_BokehBlurOperation.h
+++ b/source/blender/compositor/operations/COM_BokehBlurOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_BokehImageOperation.cc b/source/blender/compositor/operations/COM_BokehImageOperation.cc
index 9e7c11620527bc4cffdf25b6a2c670aaf567781a..42caa7aa3c0128df8b83830257c391d2779dc8b5 100644
--- a/source/blender/compositor/operations/COM_BokehImageOperation.cc
+++ b/source/blender/compositor/operations/COM_BokehImageOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_BokehImageOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_BokehImageOperation.h b/source/blender/compositor/operations/COM_BokehImageOperation.h
index 6c7818724b353a19314b6adc2c4844217cd4a470..751f1ad8d8e98e656d0493d058136e6e5f82913c 100644
--- a/source/blender/compositor/operations/COM_BokehImageOperation.h
+++ b/source/blender/compositor/operations/COM_BokehImageOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_BoxMaskOperation.cc b/source/blender/compositor/operations/COM_BoxMaskOperation.cc
index c79179a3e0a22d4da6623d44d1b5b783ae2e7365..5b3e00afe31975292a0e84f7b35a2e406ab74656 100644
--- a/source/blender/compositor/operations/COM_BoxMaskOperation.cc
+++ b/source/blender/compositor/operations/COM_BoxMaskOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_BoxMaskOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_BoxMaskOperation.h b/source/blender/compositor/operations/COM_BoxMaskOperation.h
index 4aee88556eeed2a299d057bb271c27e8415a9cd6..9f18d110f3c56e902e2d0e602996ea5a80e847ec 100644
--- a/source/blender/compositor/operations/COM_BoxMaskOperation.h
+++ b/source/blender/compositor/operations/COM_BoxMaskOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_BrightnessOperation.cc b/source/blender/compositor/operations/COM_BrightnessOperation.cc
index cebcc14b13a9f431c5f89b3fc8c0a3a0bdc9a9b7..764d5d64046ed8b7f30d36defa73622a1a29dd4c 100644
--- a/source/blender/compositor/operations/COM_BrightnessOperation.cc
+++ b/source/blender/compositor/operations/COM_BrightnessOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_BrightnessOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_BrightnessOperation.h b/source/blender/compositor/operations/COM_BrightnessOperation.h
index 003baa966136038999ea5b6acff1feca8ba5e19c..fb2d8ea943e929d498c571e86047c6f10c276938 100644
--- a/source/blender/compositor/operations/COM_BrightnessOperation.h
+++ b/source/blender/compositor/operations/COM_BrightnessOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_CalculateMeanOperation.cc b/source/blender/compositor/operations/COM_CalculateMeanOperation.cc
index b8d85675041fda50cee37b0dac7f5f06bf98edc3..4e5832a7d34a09935362e2edc08c52470b5df4fb 100644
--- a/source/blender/compositor/operations/COM_CalculateMeanOperation.cc
+++ b/source/blender/compositor/operations/COM_CalculateMeanOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_CalculateMeanOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_CalculateMeanOperation.h b/source/blender/compositor/operations/COM_CalculateMeanOperation.h
index 7c4fafb2f27d3f9201c87c41e0e2d0b401edf5d9..5059acff5baee9b1e4eecbe8e95bc9b7e041ffdb 100644
--- a/source/blender/compositor/operations/COM_CalculateMeanOperation.h
+++ b/source/blender/compositor/operations/COM_CalculateMeanOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_CalculateStandardDeviationOperation.cc b/source/blender/compositor/operations/COM_CalculateStandardDeviationOperation.cc
index 06b3114845ed93ec9aedc6dde28c674b041aef47..881b894d66db9f45074e5c555f3edf374b6da395 100644
--- a/source/blender/compositor/operations/COM_CalculateStandardDeviationOperation.cc
+++ b/source/blender/compositor/operations/COM_CalculateStandardDeviationOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_CalculateStandardDeviationOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_CalculateStandardDeviationOperation.h b/source/blender/compositor/operations/COM_CalculateStandardDeviationOperation.h
index 95b9eb21982e44bfc3356842b0f32b5107117c85..eb38dff1f06d232404f9b76ca8fc99e969e0d92b 100644
--- a/source/blender/compositor/operations/COM_CalculateStandardDeviationOperation.h
+++ b/source/blender/compositor/operations/COM_CalculateStandardDeviationOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ChangeHSVOperation.cc b/source/blender/compositor/operations/COM_ChangeHSVOperation.cc
index 7c64b1954d49e15b88017c9b0e604b32894bba9f..4e6e79dba3c25a4b9412bc2291d065a04d4dd663 100644
--- a/source/blender/compositor/operations/COM_ChangeHSVOperation.cc
+++ b/source/blender/compositor/operations/COM_ChangeHSVOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ChangeHSVOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ChangeHSVOperation.h b/source/blender/compositor/operations/COM_ChangeHSVOperation.h
index 35e606f63dfb15b1ea516c1727491f8fac91b06e..b0a9fa6fd81b97e12b7a116f3fc0c78941da85d0 100644
--- a/source/blender/compositor/operations/COM_ChangeHSVOperation.h
+++ b/source/blender/compositor/operations/COM_ChangeHSVOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ChannelMatteOperation.cc b/source/blender/compositor/operations/COM_ChannelMatteOperation.cc
index af20193118cf933843adad49cb0671ea460bcc3b..40fcd90ec7b50cff6b607050e59970a334aa04f3 100644
--- a/source/blender/compositor/operations/COM_ChannelMatteOperation.cc
+++ b/source/blender/compositor/operations/COM_ChannelMatteOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_ChannelMatteOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ChannelMatteOperation.h b/source/blender/compositor/operations/COM_ChannelMatteOperation.h
index 64b173885d5f5cab5a7a70d1f5ce7b8d50c16094..d56685e0535fdb850cbf5d210435166bee0e9493 100644
--- a/source/blender/compositor/operations/COM_ChannelMatteOperation.h
+++ b/source/blender/compositor/operations/COM_ChannelMatteOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ChromaMatteOperation.cc b/source/blender/compositor/operations/COM_ChromaMatteOperation.cc
index d0fc65ef331929e9d50819b56e71ca44ed24b10b..fa9f47ec63042a7ed26f8a5218b6e81b5c94d8f0 100644
--- a/source/blender/compositor/operations/COM_ChromaMatteOperation.cc
+++ b/source/blender/compositor/operations/COM_ChromaMatteOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ChromaMatteOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ChromaMatteOperation.h b/source/blender/compositor/operations/COM_ChromaMatteOperation.h
index 954daef1be78e3a4ea36d9aa375ce6e54d770d42..b0cd04e93fc7a442f37a8ccd9b2cfa88ea8a5658 100644
--- a/source/blender/compositor/operations/COM_ChromaMatteOperation.h
+++ b/source/blender/compositor/operations/COM_ChromaMatteOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.cc b/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.cc
index 533854b62dd7883a5291d65519c5669178ed5816..6cea68aa37d53e478f126f14f613d852b4182243 100644
--- a/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.cc
+++ b/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorBalanceASCCDLOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.h b/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.h
index 64622e399d39e98bf6d0759b1b049c420779c90d..442a03ab0cfe72ea6e3293032cd7d86fd5448720 100644
--- a/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.h
+++ b/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ColorBalanceLGGOperation.cc b/source/blender/compositor/operations/COM_ColorBalanceLGGOperation.cc
index 606fd560cfff9627f2eb01b34b7965ebeececfa7..c801e517eb048fe5a07004f0f3f1e5fe81746cf9 100644
--- a/source/blender/compositor/operations/COM_ColorBalanceLGGOperation.cc
+++ b/source/blender/compositor/operations/COM_ColorBalanceLGGOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorBalanceLGGOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ColorBalanceLGGOperation.h b/source/blender/compositor/operations/COM_ColorBalanceLGGOperation.h
index 738669e71f9ec2ac8a26e384c90dc308497e3df6..f394b4019bc68b0fda509293a03434a45776b535 100644
--- a/source/blender/compositor/operations/COM_ColorBalanceLGGOperation.h
+++ b/source/blender/compositor/operations/COM_ColorBalanceLGGOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ColorCorrectionOperation.cc b/source/blender/compositor/operations/COM_ColorCorrectionOperation.cc
index 2e7ce6b84979a41c127395684cc6991b8c39d1f9..0c8a52491a425f55ee7d11d0dcac7d3b54d8ea03 100644
--- a/source/blender/compositor/operations/COM_ColorCorrectionOperation.cc
+++ b/source/blender/compositor/operations/COM_ColorCorrectionOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorCorrectionOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ColorCorrectionOperation.h b/source/blender/compositor/operations/COM_ColorCorrectionOperation.h
index b0d52507204ae75ad7abe5ec9c89b042173f4255..bc0c47cd32cdafbe9b10c2b62fecd460817ec601 100644
--- a/source/blender/compositor/operations/COM_ColorCorrectionOperation.h
+++ b/source/blender/compositor/operations/COM_ColorCorrectionOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ColorCurveOperation.cc b/source/blender/compositor/operations/COM_ColorCurveOperation.cc
index bf82ae73d55d006b1800963e834ad1d6e22acf25..9613e21c42dd5471be73c2f8da757aec6fb1f948 100644
--- a/source/blender/compositor/operations/COM_ColorCurveOperation.cc
+++ b/source/blender/compositor/operations/COM_ColorCurveOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorCurveOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ColorCurveOperation.h b/source/blender/compositor/operations/COM_ColorCurveOperation.h
index eaebf1f3ff691da9b578a7a8bed6a3602c8e2e4c..8d054929c4ab929e9334f7f3a3e9c930846324dd 100644
--- a/source/blender/compositor/operations/COM_ColorCurveOperation.h
+++ b/source/blender/compositor/operations/COM_ColorCurveOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ColorExposureOperation.cc b/source/blender/compositor/operations/COM_ColorExposureOperation.cc
index 890a0ab4ccb1bdc88fd82ebfb36be61eb73090be..1fbb792d26a941f870a2b0d806ac0c6a5f1e4a5c 100644
--- a/source/blender/compositor/operations/COM_ColorExposureOperation.cc
+++ b/source/blender/compositor/operations/COM_ColorExposureOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 #include "COM_ColorExposureOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ColorExposureOperation.h b/source/blender/compositor/operations/COM_ColorExposureOperation.h
index 6de93a24ddda13fcc0258d232f8080d1d59c6118..4aad55572a653b207e11b50ff9e6372ee4e8a45e 100644
--- a/source/blender/compositor/operations/COM_ColorExposureOperation.h
+++ b/source/blender/compositor/operations/COM_ColorExposureOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ColorMatteOperation.cc b/source/blender/compositor/operations/COM_ColorMatteOperation.cc
index 14123d99b0fa3a104630168811645c9b199b4f7a..41bf91634cdb07fb1d71b4836726893bd8dc5874 100644
--- a/source/blender/compositor/operations/COM_ColorMatteOperation.cc
+++ b/source/blender/compositor/operations/COM_ColorMatteOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorMatteOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ColorMatteOperation.h b/source/blender/compositor/operations/COM_ColorMatteOperation.h
index 97cf568621a7c1524d22e10d7842f15c86aac2b4..c7775f712426792d80710ec82038fae45d079b03 100644
--- a/source/blender/compositor/operations/COM_ColorMatteOperation.h
+++ b/source/blender/compositor/operations/COM_ColorMatteOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ColorRampOperation.cc b/source/blender/compositor/operations/COM_ColorRampOperation.cc
index 94b840a6f739bb5030e3e71442f4e66e8b4bdebe..8bad5cc1b0bcac930cf41f409df29f2a462f14b5 100644
--- a/source/blender/compositor/operations/COM_ColorRampOperation.cc
+++ b/source/blender/compositor/operations/COM_ColorRampOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorRampOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ColorRampOperation.h b/source/blender/compositor/operations/COM_ColorRampOperation.h
index 2faaab4ba54e73ef0e685d57a82313727cbc191c..fb460ac69a8669ce43652c74948e76c96ea9dc99 100644
--- a/source/blender/compositor/operations/COM_ColorRampOperation.h
+++ b/source/blender/compositor/operations/COM_ColorRampOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ColorSpillOperation.cc b/source/blender/compositor/operations/COM_ColorSpillOperation.cc
index d614c9634881734ae8d1efcb69ab0d801d51c1ec..c97e4f640ae0a49539bc16fcb68d04f369b958fb 100644
--- a/source/blender/compositor/operations/COM_ColorSpillOperation.cc
+++ b/source/blender/compositor/operations/COM_ColorSpillOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ColorSpillOperation.h"
 #define AVG(a, b) ((a + b) / 2)
diff --git a/source/blender/compositor/operations/COM_ColorSpillOperation.h b/source/blender/compositor/operations/COM_ColorSpillOperation.h
index bfb0c6c963fe51c339d74808487a4da5367792c1..001518bb252575136f7201a790f7d48c5df574e3 100644
--- a/source/blender/compositor/operations/COM_ColorSpillOperation.h
+++ b/source/blender/compositor/operations/COM_ColorSpillOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_CompositorOperation.cc b/source/blender/compositor/operations/COM_CompositorOperation.cc
index 696dbb1807ca6cfaa09fd42b3c2d17c27672fcb1..f72e81d82b9cdd17908a78304089d94e6d500582 100644
--- a/source/blender/compositor/operations/COM_CompositorOperation.cc
+++ b/source/blender/compositor/operations/COM_CompositorOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_CompositorOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_CompositorOperation.h b/source/blender/compositor/operations/COM_CompositorOperation.h
index a096007470819171da1c79a8ed9bc682de0f3992..65cfa9ec6bb66ddf4e0ca3895fd19fc911dc5ab7 100644
--- a/source/blender/compositor/operations/COM_CompositorOperation.h
+++ b/source/blender/compositor/operations/COM_CompositorOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ConstantOperation.cc b/source/blender/compositor/operations/COM_ConstantOperation.cc
index 400c04d95922fa04cc6bae89d3a27223ea924fee..0977da5e37c8353bb936ed188146a55d4708ca3b 100644
--- a/source/blender/compositor/operations/COM_ConstantOperation.cc
+++ b/source/blender/compositor/operations/COM_ConstantOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_ConstantOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ConstantOperation.h b/source/blender/compositor/operations/COM_ConstantOperation.h
index d0db1ef1366f7b67180e0a2934b1dd29ef02bf63..d142a644884ccfff95864e90e396338f7fa3e177 100644
--- a/source/blender/compositor/operations/COM_ConstantOperation.h
+++ b/source/blender/compositor/operations/COM_ConstantOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ConvertColorProfileOperation.cc b/source/blender/compositor/operations/COM_ConvertColorProfileOperation.cc
index db75b2724c487c5acfe377200321db36fe679f79..01911b3bcd5d2430d69c55cb5da1e133db8f34be 100644
--- a/source/blender/compositor/operations/COM_ConvertColorProfileOperation.cc
+++ b/source/blender/compositor/operations/COM_ConvertColorProfileOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ConvertColorProfileOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ConvertColorProfileOperation.h b/source/blender/compositor/operations/COM_ConvertColorProfileOperation.h
index 960d267b9066d51652461cb21db20c1f078f4528..00270d04f321267af98d21fed526b62148899c52 100644
--- a/source/blender/compositor/operations/COM_ConvertColorProfileOperation.h
+++ b/source/blender/compositor/operations/COM_ConvertColorProfileOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ConvertColorSpaceOperation.cc b/source/blender/compositor/operations/COM_ConvertColorSpaceOperation.cc
index 5b1dfb4a02c50c400da21d1cfe00255cfc74f206..3d19f13c8b0ba3178b71993feca2b6ef8a256a33 100644
--- a/source/blender/compositor/operations/COM_ConvertColorSpaceOperation.cc
+++ b/source/blender/compositor/operations/COM_ConvertColorSpaceOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_ConvertColorSpaceOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ConvertColorSpaceOperation.h b/source/blender/compositor/operations/COM_ConvertColorSpaceOperation.h
index c065224eadc77e13be8e126c2de13ddd2b6fb781..d14667ec84110f8a2f71a084420853095cbd4d89 100644
--- a/source/blender/compositor/operations/COM_ConvertColorSpaceOperation.h
+++ b/source/blender/compositor/operations/COM_ConvertColorSpaceOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ConvertDepthToRadiusOperation.cc b/source/blender/compositor/operations/COM_ConvertDepthToRadiusOperation.cc
index a781b3ea1ed428ddd1e1fb62523dbd8f3c08cf26..89c1c7cb153507812735caef9fba52768d467218 100644
--- a/source/blender/compositor/operations/COM_ConvertDepthToRadiusOperation.cc
+++ b/source/blender/compositor/operations/COM_ConvertDepthToRadiusOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ConvertDepthToRadiusOperation.h"
 #include "BKE_camera.h"
diff --git a/source/blender/compositor/operations/COM_ConvertDepthToRadiusOperation.h b/source/blender/compositor/operations/COM_ConvertDepthToRadiusOperation.h
index 72d19eb3dd85ce09b19b57c1e26f05d3a69cf592..ae398913906e3e792314dda3747a525ed218cb65 100644
--- a/source/blender/compositor/operations/COM_ConvertDepthToRadiusOperation.h
+++ b/source/blender/compositor/operations/COM_ConvertDepthToRadiusOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ConvertOperation.cc b/source/blender/compositor/operations/COM_ConvertOperation.cc
index ec321494c6f1fea69a99d8a6a61b66ff48ce9337..7579abf792afa6ea7f9aa65e512b948e3b16595b 100644
--- a/source/blender/compositor/operations/COM_ConvertOperation.cc
+++ b/source/blender/compositor/operations/COM_ConvertOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ConvertOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ConvertOperation.h b/source/blender/compositor/operations/COM_ConvertOperation.h
index 3c4ce358eecca8b0d3ec160b9dea5cf9f444593c..e1904d61d46dea45967e4f5152a67c6aca001d64 100644
--- a/source/blender/compositor/operations/COM_ConvertOperation.h
+++ b/source/blender/compositor/operations/COM_ConvertOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ConvolutionEdgeFilterOperation.cc b/source/blender/compositor/operations/COM_ConvolutionEdgeFilterOperation.cc
index 7ba1f0bbe1468eed20ade01d509c6cc4a6b9f4f7..26102d2595f9ba70bd1eb9ffa52dbd76c76b7182 100644
--- a/source/blender/compositor/operations/COM_ConvolutionEdgeFilterOperation.cc
+++ b/source/blender/compositor/operations/COM_ConvolutionEdgeFilterOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ConvolutionEdgeFilterOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ConvolutionEdgeFilterOperation.h b/source/blender/compositor/operations/COM_ConvolutionEdgeFilterOperation.h
index a89a9412cf22762fbca261606acb8c91ee0cf9d0..38d1c0cb6ff4a6dc121ae6991aa5c10a4d278430 100644
--- a/source/blender/compositor/operations/COM_ConvolutionEdgeFilterOperation.h
+++ b/source/blender/compositor/operations/COM_ConvolutionEdgeFilterOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ConvolutionFilterOperation.cc b/source/blender/compositor/operations/COM_ConvolutionFilterOperation.cc
index 2e9990348c10899b7e729f6ff315ed5a96af9807..ece3bca53e8ae922219db8bd19c46c0c624bc24d 100644
--- a/source/blender/compositor/operations/COM_ConvolutionFilterOperation.cc
+++ b/source/blender/compositor/operations/COM_ConvolutionFilterOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ConvolutionFilterOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ConvolutionFilterOperation.h b/source/blender/compositor/operations/COM_ConvolutionFilterOperation.h
index d764c7c9081416ebbbe381a1ff74e0fb87939422..2633fd39092a60e90dc46d2aff7b77fcc4c28efc 100644
--- a/source/blender/compositor/operations/COM_ConvolutionFilterOperation.h
+++ b/source/blender/compositor/operations/COM_ConvolutionFilterOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_CropOperation.cc b/source/blender/compositor/operations/COM_CropOperation.cc
index 2385a0b54ba69d9fbd278448161c339e72b6cae6..e27a534f0beaeca64b8029fe5e89229e9f919410 100644
--- a/source/blender/compositor/operations/COM_CropOperation.cc
+++ b/source/blender/compositor/operations/COM_CropOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_CropOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_CropOperation.h b/source/blender/compositor/operations/COM_CropOperation.h
index 69bfd72b052c67bddb19ac846256c77d3531cff0..ba287945d8a88b172064340e23cae3b2e4b963cb 100644
--- a/source/blender/compositor/operations/COM_CropOperation.h
+++ b/source/blender/compositor/operations/COM_CropOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_CryptomatteOperation.cc b/source/blender/compositor/operations/COM_CryptomatteOperation.cc
index 8a24626969109c41998b3178d6595effde837c39..69218576237b9eeb751a9aa339130b12d8cd8999 100644
--- a/source/blender/compositor/operations/COM_CryptomatteOperation.cc
+++ b/source/blender/compositor/operations/COM_CryptomatteOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2018, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 #include "COM_CryptomatteOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_CryptomatteOperation.h b/source/blender/compositor/operations/COM_CryptomatteOperation.h
index 2fa6fbc8390a2fe628bb7bd55ea99489977f88ce..d26807bc0b2e07d7831e5d8c9f827f9c200c558e 100644
--- a/source/blender/compositor/operations/COM_CryptomatteOperation.h
+++ b/source/blender/compositor/operations/COM_CryptomatteOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2018, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_CurveBaseOperation.cc b/source/blender/compositor/operations/COM_CurveBaseOperation.cc
index a014fb17750780b36eb5844d327da609efd0c143..e92a2f08ed473e90bea0c5715b63851afc59460f 100644
--- a/source/blender/compositor/operations/COM_CurveBaseOperation.cc
+++ b/source/blender/compositor/operations/COM_CurveBaseOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_CurveBaseOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_CurveBaseOperation.h b/source/blender/compositor/operations/COM_CurveBaseOperation.h
index d3548c36870b06dfc2c0486105c2a142e8a690fe..d30c64e3282fe553e471ecb241d447e335b68877 100644
--- a/source/blender/compositor/operations/COM_CurveBaseOperation.h
+++ b/source/blender/compositor/operations/COM_CurveBaseOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_DenoiseOperation.cc b/source/blender/compositor/operations/COM_DenoiseOperation.cc
index 0174c50450c5ad1a9ce92d8095c65de18e1bab49..1a199ba2eabf35a8271104953f5222292b424c8e 100644
--- a/source/blender/compositor/operations/COM_DenoiseOperation.cc
+++ b/source/blender/compositor/operations/COM_DenoiseOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 #include "COM_DenoiseOperation.h"
 #include "BLI_system.h"
diff --git a/source/blender/compositor/operations/COM_DenoiseOperation.h b/source/blender/compositor/operations/COM_DenoiseOperation.h
index a3eb1f57f2f87ad6da7b8b2e2225684ab0d8e68d..2b170bb9bb73e68ac5e75a75cc48f5516382ce61 100644
--- a/source/blender/compositor/operations/COM_DenoiseOperation.h
+++ b/source/blender/compositor/operations/COM_DenoiseOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_DespeckleOperation.cc b/source/blender/compositor/operations/COM_DespeckleOperation.cc
index c60a4167dfce9ea5eeb108f97cfc85633b521a7f..cfc437a6324c35b3249599179b6370d8efac06a3 100644
--- a/source/blender/compositor/operations/COM_DespeckleOperation.cc
+++ b/source/blender/compositor/operations/COM_DespeckleOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "MEM_guardedalloc.h"
 
diff --git a/source/blender/compositor/operations/COM_DespeckleOperation.h b/source/blender/compositor/operations/COM_DespeckleOperation.h
index bb5b012a33031fa867d93929e20e790ce794e7ed..c0888b063e6fefbf11edd60fb6c736db3babaedf 100644
--- a/source/blender/compositor/operations/COM_DespeckleOperation.h
+++ b/source/blender/compositor/operations/COM_DespeckleOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_DifferenceMatteOperation.cc b/source/blender/compositor/operations/COM_DifferenceMatteOperation.cc
index 251dc4cc1616ff552ab16943d651c1ab9bf219d7..53d954f7c40d78f91440cc76c10a7d10cc47e0b2 100644
--- a/source/blender/compositor/operations/COM_DifferenceMatteOperation.cc
+++ b/source/blender/compositor/operations/COM_DifferenceMatteOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DifferenceMatteOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_DifferenceMatteOperation.h b/source/blender/compositor/operations/COM_DifferenceMatteOperation.h
index 700dabc9b8dbeb5908504572ea2b5662cf52be9f..3a9b710f3ac48162af44a1a07fdff3530c72a3d0 100644
--- a/source/blender/compositor/operations/COM_DifferenceMatteOperation.h
+++ b/source/blender/compositor/operations/COM_DifferenceMatteOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_DilateErodeOperation.cc b/source/blender/compositor/operations/COM_DilateErodeOperation.cc
index 3aaf402ae24a46e9df3351b9e0cffcb77429fc06..a93571ebee436d2985ccb07769a4478fbe2fbf7e 100644
--- a/source/blender/compositor/operations/COM_DilateErodeOperation.cc
+++ b/source/blender/compositor/operations/COM_DilateErodeOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DilateErodeOperation.h"
 #include "COM_OpenCLDevice.h"
diff --git a/source/blender/compositor/operations/COM_DilateErodeOperation.h b/source/blender/compositor/operations/COM_DilateErodeOperation.h
index 2ca6431862dfd3cfa8b4706d2eba2463d5521c1f..79af1c437bdd7e5ef611e7a87629e324defac84b 100644
--- a/source/blender/compositor/operations/COM_DilateErodeOperation.h
+++ b/source/blender/compositor/operations/COM_DilateErodeOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_DirectionalBlurOperation.cc b/source/blender/compositor/operations/COM_DirectionalBlurOperation.cc
index 1104ef6f71f340fcd508c24bf5dd722649adbaa1..37e05de33db9c214480ce1882d13bfad7ddf5e6c 100644
--- a/source/blender/compositor/operations/COM_DirectionalBlurOperation.cc
+++ b/source/blender/compositor/operations/COM_DirectionalBlurOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DirectionalBlurOperation.h"
 #include "COM_OpenCLDevice.h"
diff --git a/source/blender/compositor/operations/COM_DirectionalBlurOperation.h b/source/blender/compositor/operations/COM_DirectionalBlurOperation.h
index 2dd2fc98ccdbf3daa1d9796c2bafef4f4ea4a792..e209bac2305989f2f20d79c17407884c5351a1c1 100644
--- a/source/blender/compositor/operations/COM_DirectionalBlurOperation.h
+++ b/source/blender/compositor/operations/COM_DirectionalBlurOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_DisplaceOperation.cc b/source/blender/compositor/operations/COM_DisplaceOperation.cc
index 4742692b75de4f0395d46829ccf9d34e3366d04f..198cca0482e03e0277cb6f027134f037f694183f 100644
--- a/source/blender/compositor/operations/COM_DisplaceOperation.cc
+++ b/source/blender/compositor/operations/COM_DisplaceOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DisplaceOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_DisplaceOperation.h b/source/blender/compositor/operations/COM_DisplaceOperation.h
index a6f6927407ff0ce464fd7a5b092663ee996a1ba7..a355539672ce8c2ad366dde83303aae213e1fb20 100644
--- a/source/blender/compositor/operations/COM_DisplaceOperation.h
+++ b/source/blender/compositor/operations/COM_DisplaceOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_DisplaceSimpleOperation.cc b/source/blender/compositor/operations/COM_DisplaceSimpleOperation.cc
index 729b01d924d15a8eab32f78226b48028693ff7dc..cb872f61941e201b6d24f5dba4a417c39eeeb895 100644
--- a/source/blender/compositor/operations/COM_DisplaceSimpleOperation.cc
+++ b/source/blender/compositor/operations/COM_DisplaceSimpleOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_DisplaceSimpleOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_DisplaceSimpleOperation.h b/source/blender/compositor/operations/COM_DisplaceSimpleOperation.h
index c16146dc464c4e2e9130a0a65e848ea7da2ef7ee..19a4294cbf8f5146a629b13da61c7a0db9a0994a 100644
--- a/source/blender/compositor/operations/COM_DisplaceSimpleOperation.h
+++ b/source/blender/compositor/operations/COM_DisplaceSimpleOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.cc b/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.cc
index 7618e318c779c451b9bac90bef0240768ccaf65e..116aaa8251b8d490e6e041586a30d25d4dac4413 100644
--- a/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.cc
+++ b/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DistanceRGBMatteOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.h b/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.h
index 306a4e316f5734f01e6b32bd328019a8d93b1b49..2cb21be43ad1b4efcd4ad792d8ca2045d8ea940e 100644
--- a/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.h
+++ b/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.cc b/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.cc
index 682c01a63d55dcd7064b329c96dfb2bf8444777a..ea82c65eac032068db8bd6863f1f4f5ca175d387 100644
--- a/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.cc
+++ b/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DistanceYCCMatteOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.h b/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.h
index 1d5ed9f0de175a8bb04f0fc52a7eb3cf10104a8c..c3a38bc25a7d8fc17b1f54ae79d8a3b590628bf2 100644
--- a/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.h
+++ b/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_DotproductOperation.cc b/source/blender/compositor/operations/COM_DotproductOperation.cc
index ce1432547ae7bbdb3398f0582f99922e4f981aa1..01ef83e54aa4cafedeecb6f2ad0791dd0e767170 100644
--- a/source/blender/compositor/operations/COM_DotproductOperation.cc
+++ b/source/blender/compositor/operations/COM_DotproductOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_DotproductOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_DotproductOperation.h b/source/blender/compositor/operations/COM_DotproductOperation.h
index f9e5d4d39c464d1822d7163e291805a997d01f56..e20b78ca4dd5362e9afd607a745358722cf53ef8 100644
--- a/source/blender/compositor/operations/COM_DotproductOperation.h
+++ b/source/blender/compositor/operations/COM_DotproductOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_DoubleEdgeMaskOperation.cc b/source/blender/compositor/operations/COM_DoubleEdgeMaskOperation.cc
index 22899bd396a52c0f05bab7fa612679843a0c6624..ea156cd19db6084f259b2208c572920c9323894f 100644
--- a/source/blender/compositor/operations/COM_DoubleEdgeMaskOperation.cc
+++ b/source/blender/compositor/operations/COM_DoubleEdgeMaskOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include <cstdlib>
 
diff --git a/source/blender/compositor/operations/COM_DoubleEdgeMaskOperation.h b/source/blender/compositor/operations/COM_DoubleEdgeMaskOperation.h
index f2086d9ebd40ca87404edafef9f0154720d48440..2988e09014d459219b1c1ba27946650fa95efec3 100644
--- a/source/blender/compositor/operations/COM_DoubleEdgeMaskOperation.h
+++ b/source/blender/compositor/operations/COM_DoubleEdgeMaskOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_EllipseMaskOperation.cc b/source/blender/compositor/operations/COM_EllipseMaskOperation.cc
index a051e06d15e765a23006e19590cf1496f3be835e..508e5ea57125a6b0615ad72ef3bab9f126a3787d 100644
--- a/source/blender/compositor/operations/COM_EllipseMaskOperation.cc
+++ b/source/blender/compositor/operations/COM_EllipseMaskOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_EllipseMaskOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_EllipseMaskOperation.h b/source/blender/compositor/operations/COM_EllipseMaskOperation.h
index 7a6f96ab1b1875b4028f898577d74168007280d0..b50a7f1253c33cd87e556c75009757074f0d5ae4 100644
--- a/source/blender/compositor/operations/COM_EllipseMaskOperation.h
+++ b/source/blender/compositor/operations/COM_EllipseMaskOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_FastGaussianBlurOperation.cc b/source/blender/compositor/operations/COM_FastGaussianBlurOperation.cc
index 850fad1d96a34f6654382e009d5e6ef962290cc0..573a740dac8a0615aa10ba3bd641f8a5b716bf5e 100644
--- a/source/blender/compositor/operations/COM_FastGaussianBlurOperation.cc
+++ b/source/blender/compositor/operations/COM_FastGaussianBlurOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include <climits>
 
diff --git a/source/blender/compositor/operations/COM_FastGaussianBlurOperation.h b/source/blender/compositor/operations/COM_FastGaussianBlurOperation.h
index 8d33e5ef244c9514d1d9efb34ca2e5fa0fc45a7b..157d3c7f32f33f073a8a13d2fdbab89d1dc9c47f 100644
--- a/source/blender/compositor/operations/COM_FastGaussianBlurOperation.h
+++ b/source/blender/compositor/operations/COM_FastGaussianBlurOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_FlipOperation.cc b/source/blender/compositor/operations/COM_FlipOperation.cc
index 7ca12a504b7c745b827714fbf88d97430c076552..369f124622aacd3a3488c51fed476e08ddee7258 100644
--- a/source/blender/compositor/operations/COM_FlipOperation.cc
+++ b/source/blender/compositor/operations/COM_FlipOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_FlipOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_FlipOperation.h b/source/blender/compositor/operations/COM_FlipOperation.h
index 001fd652740f48439264492d9494e34d1d557903..440ed9d9916a3dfea3e0799188feb6331b0207df 100644
--- a/source/blender/compositor/operations/COM_FlipOperation.h
+++ b/source/blender/compositor/operations/COM_FlipOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GammaCorrectOperation.cc b/source/blender/compositor/operations/COM_GammaCorrectOperation.cc
index 57d2ebd1b84dd6b84d3db2393cd230f92a02604d..29a82ddc3d5368fb8e32a6d1b579d7fabe56bfe6 100644
--- a/source/blender/compositor/operations/COM_GammaCorrectOperation.cc
+++ b/source/blender/compositor/operations/COM_GammaCorrectOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GammaCorrectOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_GammaCorrectOperation.h b/source/blender/compositor/operations/COM_GammaCorrectOperation.h
index e13d96184ad7d77980eeece63ad139ae16ce0078..6f7c907ebfb674cb1cb85e8df5ba6bb61c8c4e1d 100644
--- a/source/blender/compositor/operations/COM_GammaCorrectOperation.h
+++ b/source/blender/compositor/operations/COM_GammaCorrectOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GammaOperation.cc b/source/blender/compositor/operations/COM_GammaOperation.cc
index 3ea7f35f1b51c218a7979deadde464330479a000..80479ba07c37e6909917c131b8dabe5c84e0992e 100644
--- a/source/blender/compositor/operations/COM_GammaOperation.cc
+++ b/source/blender/compositor/operations/COM_GammaOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GammaOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_GammaOperation.h b/source/blender/compositor/operations/COM_GammaOperation.h
index d8703a0a19aed263db9b978166e4af66db0fa687..2c0066fe9a91083ce0114a1a8b042687054b67d9 100644
--- a/source/blender/compositor/operations/COM_GammaOperation.h
+++ b/source/blender/compositor/operations/COM_GammaOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GaussianAlphaBlurBaseOperation.cc b/source/blender/compositor/operations/COM_GaussianAlphaBlurBaseOperation.cc
index cfd83102aaf583841f8bd9ed937319ecedc982d5..f380abf42f059cec87cb06de6a75c957db3301a3 100644
--- a/source/blender/compositor/operations/COM_GaussianAlphaBlurBaseOperation.cc
+++ b/source/blender/compositor/operations/COM_GaussianAlphaBlurBaseOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_GaussianAlphaBlurBaseOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_GaussianAlphaBlurBaseOperation.h b/source/blender/compositor/operations/COM_GaussianAlphaBlurBaseOperation.h
index 2bab6912d341aa7be31352c31e98e423c88ee8d6..da5f54208df602871de42b6da8c85c5dd89549db 100644
--- a/source/blender/compositor/operations/COM_GaussianAlphaBlurBaseOperation.h
+++ b/source/blender/compositor/operations/COM_GaussianAlphaBlurBaseOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GaussianAlphaXBlurOperation.cc b/source/blender/compositor/operations/COM_GaussianAlphaXBlurOperation.cc
index 3836cf45371d661262c639383ae323ee9676c80b..49669d701777a75a28a0e6b3dee34ba0514735d1 100644
--- a/source/blender/compositor/operations/COM_GaussianAlphaXBlurOperation.cc
+++ b/source/blender/compositor/operations/COM_GaussianAlphaXBlurOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GaussianAlphaXBlurOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_GaussianAlphaXBlurOperation.h b/source/blender/compositor/operations/COM_GaussianAlphaXBlurOperation.h
index 31b4a582c4babd5faa7aec2c8dd1e3d5b0cee7d8..0b07501341ecc6e477fe472b188b779b2cbfa762 100644
--- a/source/blender/compositor/operations/COM_GaussianAlphaXBlurOperation.h
+++ b/source/blender/compositor/operations/COM_GaussianAlphaXBlurOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GaussianAlphaYBlurOperation.cc b/source/blender/compositor/operations/COM_GaussianAlphaYBlurOperation.cc
index d71d90e7fa4cdfe279c6d5bbacf24f576470d580..0e73299f58e679e93896f3f2913cec6a4136b6f8 100644
--- a/source/blender/compositor/operations/COM_GaussianAlphaYBlurOperation.cc
+++ b/source/blender/compositor/operations/COM_GaussianAlphaYBlurOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GaussianAlphaYBlurOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_GaussianAlphaYBlurOperation.h b/source/blender/compositor/operations/COM_GaussianAlphaYBlurOperation.h
index 28dc289c4456729214b93d55c1ef41c4a0c7442a..7b4bf9c398c957ca6a2746e644d499d050b863e3 100644
--- a/source/blender/compositor/operations/COM_GaussianAlphaYBlurOperation.h
+++ b/source/blender/compositor/operations/COM_GaussianAlphaYBlurOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GaussianBlurBaseOperation.cc b/source/blender/compositor/operations/COM_GaussianBlurBaseOperation.cc
index 9f4ee376fbf1eedbe9b979ddedccddcf559b599f..3c66f74f28418e742c75cbbc514c9dcd06e8a444 100644
--- a/source/blender/compositor/operations/COM_GaussianBlurBaseOperation.cc
+++ b/source/blender/compositor/operations/COM_GaussianBlurBaseOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_GaussianBlurBaseOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_GaussianBlurBaseOperation.h b/source/blender/compositor/operations/COM_GaussianBlurBaseOperation.h
index 55099c2d9be6aadef1808e94bec435ca057d0fce..542324c83e76e09c3351bef8c4c7ecc93487ef6f 100644
--- a/source/blender/compositor/operations/COM_GaussianBlurBaseOperation.h
+++ b/source/blender/compositor/operations/COM_GaussianBlurBaseOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GaussianBokehBlurOperation.cc b/source/blender/compositor/operations/COM_GaussianBokehBlurOperation.cc
index db5f9c7c35d7a7c3d98615df1cc2968e799d0cb2..1b23b0e001c8d58f067b03b61c2444a9ac2c8e6b 100644
--- a/source/blender/compositor/operations/COM_GaussianBokehBlurOperation.cc
+++ b/source/blender/compositor/operations/COM_GaussianBokehBlurOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GaussianBokehBlurOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_GaussianBokehBlurOperation.h b/source/blender/compositor/operations/COM_GaussianBokehBlurOperation.h
index 06d7d85894cca6f99168df888098c5291af4caa8..2c0e224c50535a4cc8c2f90bd42fac8463821717 100644
--- a/source/blender/compositor/operations/COM_GaussianBokehBlurOperation.h
+++ b/source/blender/compositor/operations/COM_GaussianBokehBlurOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GaussianXBlurOperation.cc b/source/blender/compositor/operations/COM_GaussianXBlurOperation.cc
index b43db5ba66451591d99c9d8d9482e2e38711ff1e..a74d09e81c1d802a337670dafc545306769e0fab 100644
--- a/source/blender/compositor/operations/COM_GaussianXBlurOperation.cc
+++ b/source/blender/compositor/operations/COM_GaussianXBlurOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GaussianXBlurOperation.h"
 #include "COM_OpenCLDevice.h"
diff --git a/source/blender/compositor/operations/COM_GaussianXBlurOperation.h b/source/blender/compositor/operations/COM_GaussianXBlurOperation.h
index 72356381da3d8f5e413b873b7273586e1d3635c9..3c0fdc95a27fe3d7b2c46cbb5e3c4d05b20e9e67 100644
--- a/source/blender/compositor/operations/COM_GaussianXBlurOperation.h
+++ b/source/blender/compositor/operations/COM_GaussianXBlurOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GaussianYBlurOperation.cc b/source/blender/compositor/operations/COM_GaussianYBlurOperation.cc
index 639536ebcc18ce6b258d483956fb8f332d7134a0..88bb86ab6d62354338152c82d50d9f6de6262e0d 100644
--- a/source/blender/compositor/operations/COM_GaussianYBlurOperation.cc
+++ b/source/blender/compositor/operations/COM_GaussianYBlurOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GaussianYBlurOperation.h"
 #include "COM_OpenCLDevice.h"
diff --git a/source/blender/compositor/operations/COM_GaussianYBlurOperation.h b/source/blender/compositor/operations/COM_GaussianYBlurOperation.h
index 817e5a137c25b49642359c88f7c19e4047e168e4..284d70df3b385e5160aa5018531d94e986008fc1 100644
--- a/source/blender/compositor/operations/COM_GaussianYBlurOperation.h
+++ b/source/blender/compositor/operations/COM_GaussianYBlurOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GlareBaseOperation.cc b/source/blender/compositor/operations/COM_GlareBaseOperation.cc
index 766b20326db39e132a38ad184ddc9780f8971381..13f55b5909cf7daaf195b9a6793bfb5f568574b0 100644
--- a/source/blender/compositor/operations/COM_GlareBaseOperation.cc
+++ b/source/blender/compositor/operations/COM_GlareBaseOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GlareBaseOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_GlareBaseOperation.h b/source/blender/compositor/operations/COM_GlareBaseOperation.h
index c29587839b1b086d50866516b859ccd9a0a0419a..4750086a1199d9b285a73fa09d5f9b52924218e3 100644
--- a/source/blender/compositor/operations/COM_GlareBaseOperation.h
+++ b/source/blender/compositor/operations/COM_GlareBaseOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GlareFogGlowOperation.cc b/source/blender/compositor/operations/COM_GlareFogGlowOperation.cc
index fa2e2597452f990ab312861553fa93af2c9ff2ea..8b52123b2f02670a138ba9218ee62ab7aebdf9d6 100644
--- a/source/blender/compositor/operations/COM_GlareFogGlowOperation.cc
+++ b/source/blender/compositor/operations/COM_GlareFogGlowOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GlareFogGlowOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_GlareFogGlowOperation.h b/source/blender/compositor/operations/COM_GlareFogGlowOperation.h
index 648351fa6925fb6f94ae3373a0226e683eaf1cfe..5e19f2ab2aab15daf8f0e57669908cd77565a0c6 100644
--- a/source/blender/compositor/operations/COM_GlareFogGlowOperation.h
+++ b/source/blender/compositor/operations/COM_GlareFogGlowOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GlareGhostOperation.cc b/source/blender/compositor/operations/COM_GlareGhostOperation.cc
index 930c723e94e628e96b3c5d342bd26f5bcce0014d..e863f74d98a14506c081f6c15021fcc2f0e1c083 100644
--- a/source/blender/compositor/operations/COM_GlareGhostOperation.cc
+++ b/source/blender/compositor/operations/COM_GlareGhostOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GlareGhostOperation.h"
 #include "COM_FastGaussianBlurOperation.h"
diff --git a/source/blender/compositor/operations/COM_GlareGhostOperation.h b/source/blender/compositor/operations/COM_GlareGhostOperation.h
index e84084c3f6e4fe907b31ccb770da6cbddbbf985c..644c297567667c573559b89e84d66de97473e553 100644
--- a/source/blender/compositor/operations/COM_GlareGhostOperation.h
+++ b/source/blender/compositor/operations/COM_GlareGhostOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GlareSimpleStarOperation.cc b/source/blender/compositor/operations/COM_GlareSimpleStarOperation.cc
index 5d8dca055aaf79d7f11e511e1974a35dcb3c78fe..a656eb3c70624a5b727f3b835fd191db90e7ca59 100644
--- a/source/blender/compositor/operations/COM_GlareSimpleStarOperation.cc
+++ b/source/blender/compositor/operations/COM_GlareSimpleStarOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GlareSimpleStarOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_GlareSimpleStarOperation.h b/source/blender/compositor/operations/COM_GlareSimpleStarOperation.h
index be162bbda446ba3a138d02c363cadd93c56d119a..3c2d2fe2d0fed3932c018dfff5674db10490c217 100644
--- a/source/blender/compositor/operations/COM_GlareSimpleStarOperation.h
+++ b/source/blender/compositor/operations/COM_GlareSimpleStarOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GlareStreaksOperation.cc b/source/blender/compositor/operations/COM_GlareStreaksOperation.cc
index f4d9b588917a81f1a2445303dff50e0b678434c8..233eb8caf38bd5ebc61a6dbfbe8267bc1df03b4e 100644
--- a/source/blender/compositor/operations/COM_GlareStreaksOperation.cc
+++ b/source/blender/compositor/operations/COM_GlareStreaksOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GlareStreaksOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_GlareStreaksOperation.h b/source/blender/compositor/operations/COM_GlareStreaksOperation.h
index bad73687afddea3e696807132ac7a4edf843ec5f..09ef30c339d6c1a5897675201a7343a0fa1a3f83 100644
--- a/source/blender/compositor/operations/COM_GlareStreaksOperation.h
+++ b/source/blender/compositor/operations/COM_GlareStreaksOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_GlareThresholdOperation.cc b/source/blender/compositor/operations/COM_GlareThresholdOperation.cc
index 0538b4e48a045df5f62134817c7cf376ae55ed41..a529d3f75d9e55364c9522bf4e334d40e5e997a7 100644
--- a/source/blender/compositor/operations/COM_GlareThresholdOperation.cc
+++ b/source/blender/compositor/operations/COM_GlareThresholdOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_GlareThresholdOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_GlareThresholdOperation.h b/source/blender/compositor/operations/COM_GlareThresholdOperation.h
index 41eac34375d9a8f1846178a7103ddcaf028b970f..90870e3cca9442e8cb1ab5a9a9e943ac2e2c9d87 100644
--- a/source/blender/compositor/operations/COM_GlareThresholdOperation.h
+++ b/source/blender/compositor/operations/COM_GlareThresholdOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_HueSaturationValueCorrectOperation.cc b/source/blender/compositor/operations/COM_HueSaturationValueCorrectOperation.cc
index d1fad29498a9e5eca6a97e36785f37ed12f59975..3fdd3faeaf3155283049cf7bea3ac6e4584a31da 100644
--- a/source/blender/compositor/operations/COM_HueSaturationValueCorrectOperation.cc
+++ b/source/blender/compositor/operations/COM_HueSaturationValueCorrectOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_HueSaturationValueCorrectOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_HueSaturationValueCorrectOperation.h b/source/blender/compositor/operations/COM_HueSaturationValueCorrectOperation.h
index ac64d31e494bef75c3a38d415fa650f9dc7dd3ce..e3038e7e72f2fbae0ce8066024d3a9a527d03bc3 100644
--- a/source/blender/compositor/operations/COM_HueSaturationValueCorrectOperation.h
+++ b/source/blender/compositor/operations/COM_HueSaturationValueCorrectOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_IDMaskOperation.cc b/source/blender/compositor/operations/COM_IDMaskOperation.cc
index 503cbf5eb31654688a94046db92da55fedf1a0ee..dee779647e25df4137891ea41140c7a756909bf2 100644
--- a/source/blender/compositor/operations/COM_IDMaskOperation.cc
+++ b/source/blender/compositor/operations/COM_IDMaskOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_IDMaskOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_IDMaskOperation.h b/source/blender/compositor/operations/COM_IDMaskOperation.h
index 3a7ceec8c497982a7f95767faad1c18d5a22e10a..92d6e0ee861bd00fbd70a40f9ede7af6b995798d 100644
--- a/source/blender/compositor/operations/COM_IDMaskOperation.h
+++ b/source/blender/compositor/operations/COM_IDMaskOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ImageOperation.cc b/source/blender/compositor/operations/COM_ImageOperation.cc
index e32343cfbf2b68cbca6f7c289fca21209cedf24b..a9ab414670f34245f0d7dca7caad9d3bf984f66d 100644
--- a/source/blender/compositor/operations/COM_ImageOperation.cc
+++ b/source/blender/compositor/operations/COM_ImageOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ImageOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ImageOperation.h b/source/blender/compositor/operations/COM_ImageOperation.h
index 054398604b6a233edc8b236c24907e6676adfeb5..1eaa828fe2a9a8c58f671f43ed7819eb23cf7713 100644
--- a/source/blender/compositor/operations/COM_ImageOperation.h
+++ b/source/blender/compositor/operations/COM_ImageOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_InpaintOperation.cc b/source/blender/compositor/operations/COM_InpaintOperation.cc
index 83bc81d35fcc4a120f2022135cdc5c22dbf827a3..12533c26a538c9bc8f1ccc2bd4172e18ebef62c3 100644
--- a/source/blender/compositor/operations/COM_InpaintOperation.cc
+++ b/source/blender/compositor/operations/COM_InpaintOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "MEM_guardedalloc.h"
 
diff --git a/source/blender/compositor/operations/COM_InpaintOperation.h b/source/blender/compositor/operations/COM_InpaintOperation.h
index 0e52aa82b92a978ecda28f045c37d689dd174675..1bfdf2e55a1d32f350aa2034180b5e3fe0d9f28b 100644
--- a/source/blender/compositor/operations/COM_InpaintOperation.h
+++ b/source/blender/compositor/operations/COM_InpaintOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_InvertOperation.cc b/source/blender/compositor/operations/COM_InvertOperation.cc
index 3722282bd7316ece1dd11e34d8c6bd1262b094da..5761b9cb4fc4fa239dffe2364155f8a49b995a63 100644
--- a/source/blender/compositor/operations/COM_InvertOperation.cc
+++ b/source/blender/compositor/operations/COM_InvertOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_InvertOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_InvertOperation.h b/source/blender/compositor/operations/COM_InvertOperation.h
index 19abca968c0a57d935d93aaa7b2e580f4e3b175b..1b7965ba4a4061837447495715a5497d7d16e2a2 100644
--- a/source/blender/compositor/operations/COM_InvertOperation.h
+++ b/source/blender/compositor/operations/COM_InvertOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_KeyingBlurOperation.cc b/source/blender/compositor/operations/COM_KeyingBlurOperation.cc
index 7fbe96d382beb537a0c3605c292c6344a49ecaf5..71699f23a4b4b1508a88b36a0101787e87f94875 100644
--- a/source/blender/compositor/operations/COM_KeyingBlurOperation.cc
+++ b/source/blender/compositor/operations/COM_KeyingBlurOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_KeyingBlurOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_KeyingBlurOperation.h b/source/blender/compositor/operations/COM_KeyingBlurOperation.h
index cc4a98767d84af2b9a885cc8c7f42a190c0d5846..f1b1023fcdad95d44d206c48cc00ca13c530fa7e 100644
--- a/source/blender/compositor/operations/COM_KeyingBlurOperation.h
+++ b/source/blender/compositor/operations/COM_KeyingBlurOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_KeyingClipOperation.cc b/source/blender/compositor/operations/COM_KeyingClipOperation.cc
index d52b2801811ecc6b0f8da2758e0c86e1c112c717..bb951aaa9386d24e1f9cc404b4364ccf6e548f41 100644
--- a/source/blender/compositor/operations/COM_KeyingClipOperation.cc
+++ b/source/blender/compositor/operations/COM_KeyingClipOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_KeyingClipOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_KeyingClipOperation.h b/source/blender/compositor/operations/COM_KeyingClipOperation.h
index b945d4264afb445519e2f60549273ef786c799b7..82768e46d45dd0255ebc336d85b9f2949dcfae16 100644
--- a/source/blender/compositor/operations/COM_KeyingClipOperation.h
+++ b/source/blender/compositor/operations/COM_KeyingClipOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_KeyingDespillOperation.cc b/source/blender/compositor/operations/COM_KeyingDespillOperation.cc
index d200d1e5eb3658c7fbd9fbde81864d398368cd21..8dd63b09145273b8cac39e9f4ebf642cb0f77ae1 100644
--- a/source/blender/compositor/operations/COM_KeyingDespillOperation.cc
+++ b/source/blender/compositor/operations/COM_KeyingDespillOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_KeyingDespillOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_KeyingDespillOperation.h b/source/blender/compositor/operations/COM_KeyingDespillOperation.h
index b57fbd09e74cec77927d47bc4d889227ec351889..9df662b8f424a2aab931a287f8f7d65cdbed251a 100644
--- a/source/blender/compositor/operations/COM_KeyingDespillOperation.h
+++ b/source/blender/compositor/operations/COM_KeyingDespillOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_KeyingOperation.cc b/source/blender/compositor/operations/COM_KeyingOperation.cc
index c7ab3aca2e2330414f4c2190d6315c3ae582c994..dd5d4ada87ccf846ac99d6975b6277c3b84ab774 100644
--- a/source/blender/compositor/operations/COM_KeyingOperation.cc
+++ b/source/blender/compositor/operations/COM_KeyingOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_KeyingOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_KeyingOperation.h b/source/blender/compositor/operations/COM_KeyingOperation.h
index d7be48720654a78a5b26f5e8603593a84970fab3..864a37c71d90ef67bdcf6a9acce1a9dcf9fd7860 100644
--- a/source/blender/compositor/operations/COM_KeyingOperation.h
+++ b/source/blender/compositor/operations/COM_KeyingOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_KeyingScreenOperation.cc b/source/blender/compositor/operations/COM_KeyingScreenOperation.cc
index 5d12f29b83fef6c7aecc746666f58ce4d506b3a8..0db9b7e6a042dafa1d0d9a9f0154878b091612f9 100644
--- a/source/blender/compositor/operations/COM_KeyingScreenOperation.cc
+++ b/source/blender/compositor/operations/COM_KeyingScreenOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_KeyingScreenOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_KeyingScreenOperation.h b/source/blender/compositor/operations/COM_KeyingScreenOperation.h
index 3450a82a4853035feb214b04840d9a9ff7247677..2cc87b89841a5a9cb02a152b2b9da2acc5a38300 100644
--- a/source/blender/compositor/operations/COM_KeyingScreenOperation.h
+++ b/source/blender/compositor/operations/COM_KeyingScreenOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_LuminanceMatteOperation.cc b/source/blender/compositor/operations/COM_LuminanceMatteOperation.cc
index f2543d0d159682af10cd58e60a4fa6b3b93faa5d..1cb98a7c98fcce7fcac89d5ea57c70d0fc0fbde1 100644
--- a/source/blender/compositor/operations/COM_LuminanceMatteOperation.cc
+++ b/source/blender/compositor/operations/COM_LuminanceMatteOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_LuminanceMatteOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_LuminanceMatteOperation.h b/source/blender/compositor/operations/COM_LuminanceMatteOperation.h
index 7f9ccfc83ac33d2c9f49ed304e1bd6de7e7a576b..30f94c8b19c331a0acec1089723989234379ee34 100644
--- a/source/blender/compositor/operations/COM_LuminanceMatteOperation.h
+++ b/source/blender/compositor/operations/COM_LuminanceMatteOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_MapRangeOperation.cc b/source/blender/compositor/operations/COM_MapRangeOperation.cc
index 7d63a47350049c763b00d6f64791d1bfd450646d..4dd5b571166620d0d6cd50d86066277602f1b982 100644
--- a/source/blender/compositor/operations/COM_MapRangeOperation.cc
+++ b/source/blender/compositor/operations/COM_MapRangeOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_MapRangeOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_MapRangeOperation.h b/source/blender/compositor/operations/COM_MapRangeOperation.h
index 0d0f3c90e35d89ebddcf96b393fb19489475bb59..34cb4e5347ee6664aa5f0457db652f3c604c6ca6 100644
--- a/source/blender/compositor/operations/COM_MapRangeOperation.h
+++ b/source/blender/compositor/operations/COM_MapRangeOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_MapUVOperation.cc b/source/blender/compositor/operations/COM_MapUVOperation.cc
index 8f46332c9bcbc39d990716f6365c8fd3cef51534..40f91a041348b4591d08d3b1c9c57994d578423a 100644
--- a/source/blender/compositor/operations/COM_MapUVOperation.cc
+++ b/source/blender/compositor/operations/COM_MapUVOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MapUVOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_MapUVOperation.h b/source/blender/compositor/operations/COM_MapUVOperation.h
index 38d848f61a0bc7e3257096a8219aca2f42b14977..9015f950a9eea691ff21399b08ae5c62d7921be0 100644
--- a/source/blender/compositor/operations/COM_MapUVOperation.h
+++ b/source/blender/compositor/operations/COM_MapUVOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_MapValueOperation.cc b/source/blender/compositor/operations/COM_MapValueOperation.cc
index 1e6570f2f6421a685d12aeb56edf338da4aff3a1..1353e0391a3d137abf78458cafa3de141abf04d4 100644
--- a/source/blender/compositor/operations/COM_MapValueOperation.cc
+++ b/source/blender/compositor/operations/COM_MapValueOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MapValueOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_MapValueOperation.h b/source/blender/compositor/operations/COM_MapValueOperation.h
index 77d3a4a293225388ed791693e897e3ad45f2c4f7..4c384e52c956d815af9da1f469c90375e27633a7 100644
--- a/source/blender/compositor/operations/COM_MapValueOperation.h
+++ b/source/blender/compositor/operations/COM_MapValueOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_MaskOperation.cc b/source/blender/compositor/operations/COM_MaskOperation.cc
index 4e4cc820edb6c5016094ede862b9732243fe6594..29d0c0c2b9c034a6f8d016f7c7cc0b9c4e4736e7 100644
--- a/source/blender/compositor/operations/COM_MaskOperation.cc
+++ b/source/blender/compositor/operations/COM_MaskOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_MaskOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_MaskOperation.h b/source/blender/compositor/operations/COM_MaskOperation.h
index 5fc0ed96c22efb476a04540e67c802b81d17973d..c1697000dd6061b8b2088eb011f0c38cf2ee45a9 100644
--- a/source/blender/compositor/operations/COM_MaskOperation.h
+++ b/source/blender/compositor/operations/COM_MaskOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_MathBaseOperation.cc b/source/blender/compositor/operations/COM_MathBaseOperation.cc
index 1a4684ae3f0bcefbbaec04f088f7c99a9a16f7f5..7c8198d3a90cd120f43879e3c1de0f0928a76beb 100644
--- a/source/blender/compositor/operations/COM_MathBaseOperation.cc
+++ b/source/blender/compositor/operations/COM_MathBaseOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MathBaseOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_MathBaseOperation.h b/source/blender/compositor/operations/COM_MathBaseOperation.h
index dc5a16ba4a16aed37bbf5de3e5b033b401ac30ca..69e2edbe2604829e5fb8c62a4babf9c637efe65d 100644
--- a/source/blender/compositor/operations/COM_MathBaseOperation.h
+++ b/source/blender/compositor/operations/COM_MathBaseOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_MixOperation.cc b/source/blender/compositor/operations/COM_MixOperation.cc
index edae4454b1316e085a60df4e6dea7dcdc60845d1..7a6c48b89c0d65ddffbf808758cf9ec7704b4715 100644
--- a/source/blender/compositor/operations/COM_MixOperation.cc
+++ b/source/blender/compositor/operations/COM_MixOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MixOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_MixOperation.h b/source/blender/compositor/operations/COM_MixOperation.h
index bf5639f43a3232baff17238ffb4eb93153919ada..73c1f9fcb2261da2ca4c6fe5fb4a1f96b416e4dc 100644
--- a/source/blender/compositor/operations/COM_MixOperation.h
+++ b/source/blender/compositor/operations/COM_MixOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_MovieClipAttributeOperation.cc b/source/blender/compositor/operations/COM_MovieClipAttributeOperation.cc
index 1765012d87393f2a228b2ebbb6948e35a7aef2cc..d44e6fc61af0684308167f3865bfd545f5a84dbe 100644
--- a/source/blender/compositor/operations/COM_MovieClipAttributeOperation.cc
+++ b/source/blender/compositor/operations/COM_MovieClipAttributeOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MovieClipAttributeOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_MovieClipAttributeOperation.h b/source/blender/compositor/operations/COM_MovieClipAttributeOperation.h
index 9f333189811fdd7b8d1e3d350b8e500ff6c6616b..c4f325353a1800b954a1700a96771d611ce5c765 100644
--- a/source/blender/compositor/operations/COM_MovieClipAttributeOperation.h
+++ b/source/blender/compositor/operations/COM_MovieClipAttributeOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_MovieClipOperation.cc b/source/blender/compositor/operations/COM_MovieClipOperation.cc
index a73b408e3ff72689f3c0c240ab8f4287e6189490..d7cf41cf422d7764a5c2928ef77b7f28f0fa6c26 100644
--- a/source/blender/compositor/operations/COM_MovieClipOperation.cc
+++ b/source/blender/compositor/operations/COM_MovieClipOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MovieClipOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_MovieClipOperation.h b/source/blender/compositor/operations/COM_MovieClipOperation.h
index e576917df1b29daa51f0344b0b8d3955669ba503..a0e66bd4f6e486006005a4f2d52822af32c270ab 100644
--- a/source/blender/compositor/operations/COM_MovieClipOperation.h
+++ b/source/blender/compositor/operations/COM_MovieClipOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_MovieDistortionOperation.cc b/source/blender/compositor/operations/COM_MovieDistortionOperation.cc
index b25073394a26fbaf86a1096d51c9a1a4dcd9fb19..ea3aad20792881537b7b66ff4ac2accc6464478d 100644
--- a/source/blender/compositor/operations/COM_MovieDistortionOperation.cc
+++ b/source/blender/compositor/operations/COM_MovieDistortionOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MovieDistortionOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_MovieDistortionOperation.h b/source/blender/compositor/operations/COM_MovieDistortionOperation.h
index cf430c74f30d68bf812621a8b852a0e9f032a44e..b52d8dff47b7d3ede493ab149b65d8513fcd95ed 100644
--- a/source/blender/compositor/operations/COM_MovieDistortionOperation.h
+++ b/source/blender/compositor/operations/COM_MovieDistortionOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_MultilayerImageOperation.cc b/source/blender/compositor/operations/COM_MultilayerImageOperation.cc
index 5549cd1e93736ebe9ace47e23ded107848116b98..11f80c16c2f0a69c2c3e086e6b005216c6a3aa68 100644
--- a/source/blender/compositor/operations/COM_MultilayerImageOperation.cc
+++ b/source/blender/compositor/operations/COM_MultilayerImageOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_MultilayerImageOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_MultilayerImageOperation.h b/source/blender/compositor/operations/COM_MultilayerImageOperation.h
index ea5b0fb46ea776e06e1419708f69cf18633c7ac0..19774214fc7b41e4651c652714dcaf4df70e8505 100644
--- a/source/blender/compositor/operations/COM_MultilayerImageOperation.h
+++ b/source/blender/compositor/operations/COM_MultilayerImageOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_NormalizeOperation.cc b/source/blender/compositor/operations/COM_NormalizeOperation.cc
index 0625cdb5ddbecb80b49dc11ab0600d849fa0dec5..1131fc2843984166f5a97153fc7d4743f3df4a17 100644
--- a/source/blender/compositor/operations/COM_NormalizeOperation.cc
+++ b/source/blender/compositor/operations/COM_NormalizeOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_NormalizeOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_NormalizeOperation.h b/source/blender/compositor/operations/COM_NormalizeOperation.h
index dd9abcfad26a948f19114a40e131804581b81517..bf9dba9724040f5eb2c1cbaf3dc7872c438352ad 100644
--- a/source/blender/compositor/operations/COM_NormalizeOperation.h
+++ b/source/blender/compositor/operations/COM_NormalizeOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_OutputFileMultiViewOperation.cc b/source/blender/compositor/operations/COM_OutputFileMultiViewOperation.cc
index 7f2968a4719d9040d89060afcf4e1f96f61bb80e..db29a84f7dad54247fda222293caf058d51c3109 100644
--- a/source/blender/compositor/operations/COM_OutputFileMultiViewOperation.cc
+++ b/source/blender/compositor/operations/COM_OutputFileMultiViewOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2015, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. */
 
 #include "COM_OutputFileMultiViewOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_OutputFileMultiViewOperation.h b/source/blender/compositor/operations/COM_OutputFileMultiViewOperation.h
index 864eb68ac2485407b21aa28a38e12d98df66a78f..dac7a208e7ef008772711a12fb4b1aa30955c8db 100644
--- a/source/blender/compositor/operations/COM_OutputFileMultiViewOperation.h
+++ b/source/blender/compositor/operations/COM_OutputFileMultiViewOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2015, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_OutputFileOperation.cc b/source/blender/compositor/operations/COM_OutputFileOperation.cc
index 77e291e9dc495f4345bcbd380cace3ddc38bc867..56fbfc570a8163cf577caf9680e9617f99b46d95 100644
--- a/source/blender/compositor/operations/COM_OutputFileOperation.cc
+++ b/source/blender/compositor/operations/COM_OutputFileOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_OutputFileOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_OutputFileOperation.h b/source/blender/compositor/operations/COM_OutputFileOperation.h
index e601ebac4e173bfc946e16e51ab0a28957259875..12fc9ddf5f687ea15ceb2382983b6fc82d576fd4 100644
--- a/source/blender/compositor/operations/COM_OutputFileOperation.h
+++ b/source/blender/compositor/operations/COM_OutputFileOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_PixelateOperation.cc b/source/blender/compositor/operations/COM_PixelateOperation.cc
index 869e2357126fc286b3e1f56adc0b237bfdc6fc87..0b27e3828bc207977dab414462705612b406efb1 100644
--- a/source/blender/compositor/operations/COM_PixelateOperation.cc
+++ b/source/blender/compositor/operations/COM_PixelateOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_PixelateOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_PixelateOperation.h b/source/blender/compositor/operations/COM_PixelateOperation.h
index 51a480b98e9ae6685e30fcd2e2374a5e7b20ab9b..48f7653e1fff5d67af0c708db5f924f1795d5580 100644
--- a/source/blender/compositor/operations/COM_PixelateOperation.h
+++ b/source/blender/compositor/operations/COM_PixelateOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_PlaneCornerPinOperation.cc b/source/blender/compositor/operations/COM_PlaneCornerPinOperation.cc
index 8467a5d9d97392039aa5e3d410231b02dcc50116..006f1f919ba8887918d49c5ce866d267b31f72a6 100644
--- a/source/blender/compositor/operations/COM_PlaneCornerPinOperation.cc
+++ b/source/blender/compositor/operations/COM_PlaneCornerPinOperation.cc
@@ -1,19 +1,5 @@
-/* This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2014, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. */
 
 #include "COM_PlaneCornerPinOperation.h"
 #include "COM_ConstantOperation.h"
diff --git a/source/blender/compositor/operations/COM_PlaneCornerPinOperation.h b/source/blender/compositor/operations/COM_PlaneCornerPinOperation.h
index bb2166bf8b839056dc4b9d37a62436a30be29b30..f35fcbe26a9b1b5c4e40aa8fb4e01044eadbb6ea 100644
--- a/source/blender/compositor/operations/COM_PlaneCornerPinOperation.h
+++ b/source/blender/compositor/operations/COM_PlaneCornerPinOperation.h
@@ -1,19 +1,5 @@
-/* This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2014, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.cc b/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.cc
index a11a358c71dbed040df3ce9c716436f0eac60372..8bf8e339697279bda485f033786990ad49e7a2cd 100644
--- a/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.cc
+++ b/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #include "COM_PlaneDistortCommonOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.h b/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.h
index bf330ed7230cbe0a0adcd37bf52526b10b5220cd..9faaadc59e5f6ac3bfa4a42fdc70817dd89e4675 100644
--- a/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.h
+++ b/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_PlaneTrackOperation.cc b/source/blender/compositor/operations/COM_PlaneTrackOperation.cc
index cb73fa9af7bb338aadd31093e991d297ccb74024..7d51528473755e7c118cd13438cd1d6a04a8329a 100644
--- a/source/blender/compositor/operations/COM_PlaneTrackOperation.cc
+++ b/source/blender/compositor/operations/COM_PlaneTrackOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #include "COM_PlaneTrackOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_PlaneTrackOperation.h b/source/blender/compositor/operations/COM_PlaneTrackOperation.h
index 22ece04b90064b002109fc6a06ae2422a258dc65..ab0986bd7262d772958838a1d17cf72d34c5c3b0 100644
--- a/source/blender/compositor/operations/COM_PlaneTrackOperation.h
+++ b/source/blender/compositor/operations/COM_PlaneTrackOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2013, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_PosterizeOperation.cc b/source/blender/compositor/operations/COM_PosterizeOperation.cc
index 585acb31e680cdf39a42632c8a3b638a32ca014f..b541648d4fe8804422565a813645417a96b5bc4e 100644
--- a/source/blender/compositor/operations/COM_PosterizeOperation.cc
+++ b/source/blender/compositor/operations/COM_PosterizeOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_PosterizeOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_PosterizeOperation.h b/source/blender/compositor/operations/COM_PosterizeOperation.h
index 70e516bccf8d1742e268df73bca4b6f8ac660ead..ae7c37e3ff975289e743da3b6cd563421d415fe3 100644
--- a/source/blender/compositor/operations/COM_PosterizeOperation.h
+++ b/source/blender/compositor/operations/COM_PosterizeOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_PreviewOperation.cc b/source/blender/compositor/operations/COM_PreviewOperation.cc
index a3fe0acebdf569845a306b28cc0a341dd9081946..dbc544896e3721bb5012d1128d58927d062a71fd 100644
--- a/source/blender/compositor/operations/COM_PreviewOperation.cc
+++ b/source/blender/compositor/operations/COM_PreviewOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_PreviewOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_PreviewOperation.h b/source/blender/compositor/operations/COM_PreviewOperation.h
index 97d1884c9a7a4d3d2274451e4f1069a1bb4a872d..525f80546ce551a1ec9426d115f5454558c267ef 100644
--- a/source/blender/compositor/operations/COM_PreviewOperation.h
+++ b/source/blender/compositor/operations/COM_PreviewOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ProjectorLensDistortionOperation.cc b/source/blender/compositor/operations/COM_ProjectorLensDistortionOperation.cc
index 4813af511f7a6f66bb2bd502335c91f257f4a2db..fb6c3944d60d8db05d5a32159f4c5c39ef81168d 100644
--- a/source/blender/compositor/operations/COM_ProjectorLensDistortionOperation.cc
+++ b/source/blender/compositor/operations/COM_ProjectorLensDistortionOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ProjectorLensDistortionOperation.h"
 #include "COM_ConstantOperation.h"
diff --git a/source/blender/compositor/operations/COM_ProjectorLensDistortionOperation.h b/source/blender/compositor/operations/COM_ProjectorLensDistortionOperation.h
index ea90840e61c87577fd6fbbca60cca236b28ab2dc..8ff7b321d6a7923ec162c9a037af297ab73e21e6 100644
--- a/source/blender/compositor/operations/COM_ProjectorLensDistortionOperation.h
+++ b/source/blender/compositor/operations/COM_ProjectorLensDistortionOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_QualityStepHelper.cc b/source/blender/compositor/operations/COM_QualityStepHelper.cc
index 895e341d55034b5014e907ebe12820887b47f289..5a7e2eec645e18826e0c0a651ae093b408253658 100644
--- a/source/blender/compositor/operations/COM_QualityStepHelper.cc
+++ b/source/blender/compositor/operations/COM_QualityStepHelper.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_QualityStepHelper.h"
 
diff --git a/source/blender/compositor/operations/COM_QualityStepHelper.h b/source/blender/compositor/operations/COM_QualityStepHelper.h
index 6f168babeaedf25558ea16e6077904f2763e9639..1bccbf0d6af2289755461a070b3eca3fe320cce1 100644
--- a/source/blender/compositor/operations/COM_QualityStepHelper.h
+++ b/source/blender/compositor/operations/COM_QualityStepHelper.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ReadBufferOperation.cc b/source/blender/compositor/operations/COM_ReadBufferOperation.cc
index b0e0b2c219f8acfd3dc948a62984079cae523505..81f046af1b97f49f74be2d3216bc54a09f6715dd 100644
--- a/source/blender/compositor/operations/COM_ReadBufferOperation.cc
+++ b/source/blender/compositor/operations/COM_ReadBufferOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ReadBufferOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ReadBufferOperation.h b/source/blender/compositor/operations/COM_ReadBufferOperation.h
index 7f461d1c925666ec504d9aad5ddbf1a5eef234d6..54c363eff7a5f06cd5d411fbd371425a2995fb70 100644
--- a/source/blender/compositor/operations/COM_ReadBufferOperation.h
+++ b/source/blender/compositor/operations/COM_ReadBufferOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_RenderLayersProg.cc b/source/blender/compositor/operations/COM_RenderLayersProg.cc
index d8e73b7c979253360efb4c96ca0485ceae43d630..522086658f8be791b42b034b94e0bce9ff6c21cf 100644
--- a/source/blender/compositor/operations/COM_RenderLayersProg.cc
+++ b/source/blender/compositor/operations/COM_RenderLayersProg.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_RenderLayersProg.h"
 
diff --git a/source/blender/compositor/operations/COM_RenderLayersProg.h b/source/blender/compositor/operations/COM_RenderLayersProg.h
index 79afe3c2a8ca31a9fe356620686c81036eb18af6..069c63a306238ad54760f418634891835c757e95 100644
--- a/source/blender/compositor/operations/COM_RenderLayersProg.h
+++ b/source/blender/compositor/operations/COM_RenderLayersProg.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_RotateOperation.cc b/source/blender/compositor/operations/COM_RotateOperation.cc
index 145a2f9c9d069d3ca8a0d3578607d0fe74e73a6f..79f8cf5fc514d60f3475576f0952532ddb658e22 100644
--- a/source/blender/compositor/operations/COM_RotateOperation.cc
+++ b/source/blender/compositor/operations/COM_RotateOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_RotateOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_RotateOperation.h b/source/blender/compositor/operations/COM_RotateOperation.h
index f53fb3a49323f0607e65af8d2674d6cc397dfdc0..e1a0b52963ab8a8adb7605d3d87cd8ef0e063d06 100644
--- a/source/blender/compositor/operations/COM_RotateOperation.h
+++ b/source/blender/compositor/operations/COM_RotateOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_SMAAOperation.cc b/source/blender/compositor/operations/COM_SMAAOperation.cc
index c466338b61c6d33c96b417e765a1388437a6f068..11e51e81ef03b81eae38a74d760c5f43f5cf5ea9 100644
--- a/source/blender/compositor/operations/COM_SMAAOperation.cc
+++ b/source/blender/compositor/operations/COM_SMAAOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2017, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 #include "COM_SMAAOperation.h"
 #include "BKE_node.h"
diff --git a/source/blender/compositor/operations/COM_SMAAOperation.h b/source/blender/compositor/operations/COM_SMAAOperation.h
index bac33f0a2b4163ccb4b3c131d2f435ae392c7eb0..f35a9b21073233c7d9f63881dfe0b390c5f1e1b5 100644
--- a/source/blender/compositor/operations/COM_SMAAOperation.h
+++ b/source/blender/compositor/operations/COM_SMAAOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2017, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ScaleOperation.cc b/source/blender/compositor/operations/COM_ScaleOperation.cc
index 281087bb4c716434a65b7b58d1e7b3f4eee45e80..1957c5eb5fc1692ed371b09309898cb3f1bd8265 100644
--- a/source/blender/compositor/operations/COM_ScaleOperation.cc
+++ b/source/blender/compositor/operations/COM_ScaleOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ScaleOperation.h"
 #include "COM_ConstantOperation.h"
diff --git a/source/blender/compositor/operations/COM_ScaleOperation.h b/source/blender/compositor/operations/COM_ScaleOperation.h
index 132e9c8fed0d1589fa2f616ca75226c25f523e25..4cd50f3ead39a734e3edaacd9e688e4e8a3b98ad 100644
--- a/source/blender/compositor/operations/COM_ScaleOperation.h
+++ b/source/blender/compositor/operations/COM_ScaleOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ScreenLensDistortionOperation.cc b/source/blender/compositor/operations/COM_ScreenLensDistortionOperation.cc
index e36770b11a168cc50a9d7b0db057e3f9b1ee65c1..0fc5589a3df55339dbb8d2b9daac4f6ef8ab6163 100644
--- a/source/blender/compositor/operations/COM_ScreenLensDistortionOperation.cc
+++ b/source/blender/compositor/operations/COM_ScreenLensDistortionOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ScreenLensDistortionOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ScreenLensDistortionOperation.h b/source/blender/compositor/operations/COM_ScreenLensDistortionOperation.h
index fb610b904668e15e7cc7aa8bba012a5fb2147227..7e0216fe85e3f3a02966e247e52b3666d5501c4b 100644
--- a/source/blender/compositor/operations/COM_ScreenLensDistortionOperation.h
+++ b/source/blender/compositor/operations/COM_ScreenLensDistortionOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_SetAlphaMultiplyOperation.cc b/source/blender/compositor/operations/COM_SetAlphaMultiplyOperation.cc
index 9f193985d38f470fc161572cc89c846c78ee8b42..c868202224a49f6101ddb128b5a1e5427c0ff375 100644
--- a/source/blender/compositor/operations/COM_SetAlphaMultiplyOperation.cc
+++ b/source/blender/compositor/operations/COM_SetAlphaMultiplyOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SetAlphaMultiplyOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_SetAlphaMultiplyOperation.h b/source/blender/compositor/operations/COM_SetAlphaMultiplyOperation.h
index 2aa56800ff7607713374b91deb63bf4915ed925d..77e0447a6b493d303f3d0c782d17b9852bb06966 100644
--- a/source/blender/compositor/operations/COM_SetAlphaMultiplyOperation.h
+++ b/source/blender/compositor/operations/COM_SetAlphaMultiplyOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_SetAlphaReplaceOperation.cc b/source/blender/compositor/operations/COM_SetAlphaReplaceOperation.cc
index c4490cab178e37955d39892d3fc4c59e59b9e2a5..10650bfa07f310b9a9361956be75b627d007c3eb 100644
--- a/source/blender/compositor/operations/COM_SetAlphaReplaceOperation.cc
+++ b/source/blender/compositor/operations/COM_SetAlphaReplaceOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SetAlphaReplaceOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_SetAlphaReplaceOperation.h b/source/blender/compositor/operations/COM_SetAlphaReplaceOperation.h
index ea27e6af672fbb3fe11bdf4fd819cd4443880d38..19b90afdfb02e56240130734b5183ea1a96949af 100644
--- a/source/blender/compositor/operations/COM_SetAlphaReplaceOperation.h
+++ b/source/blender/compositor/operations/COM_SetAlphaReplaceOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_SetColorOperation.cc b/source/blender/compositor/operations/COM_SetColorOperation.cc
index b7fee8560531ff37ab8cd2b5d922eec357f04a36..f7eb7bccc983744448d612d9f0a9cc63ee4d20c7 100644
--- a/source/blender/compositor/operations/COM_SetColorOperation.cc
+++ b/source/blender/compositor/operations/COM_SetColorOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SetColorOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_SetColorOperation.h b/source/blender/compositor/operations/COM_SetColorOperation.h
index 0e04c0324b8774135e3b06cfd520e81fa434d396..deefe4a5f4c526daab62978dc0b8f33a6e89f4cc 100644
--- a/source/blender/compositor/operations/COM_SetColorOperation.h
+++ b/source/blender/compositor/operations/COM_SetColorOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_SetSamplerOperation.cc b/source/blender/compositor/operations/COM_SetSamplerOperation.cc
index 6f5ac63317b1bda5afd1cabcaa5d8eed92694a4e..7829e8ab3993540c165cb041595ee884d483be35 100644
--- a/source/blender/compositor/operations/COM_SetSamplerOperation.cc
+++ b/source/blender/compositor/operations/COM_SetSamplerOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SetSamplerOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_SetSamplerOperation.h b/source/blender/compositor/operations/COM_SetSamplerOperation.h
index 27ef6603ae4854cf39408d2394ed5bc9723509e5..6af2b9b9efa5670804fa5aab0243029aad7a898f 100644
--- a/source/blender/compositor/operations/COM_SetSamplerOperation.h
+++ b/source/blender/compositor/operations/COM_SetSamplerOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_SetValueOperation.cc b/source/blender/compositor/operations/COM_SetValueOperation.cc
index d11a35aefc32806a8aa20b7daf94637ed572885c..79febb207db4f1d0fe9a0e9af88dd3351c0d1587 100644
--- a/source/blender/compositor/operations/COM_SetValueOperation.cc
+++ b/source/blender/compositor/operations/COM_SetValueOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SetValueOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_SetValueOperation.h b/source/blender/compositor/operations/COM_SetValueOperation.h
index 4c824d002944055c5cfc175d4b952a7802f9a982..d3d1d1dc526e0a65ebe26813d88312c7397c6a4f 100644
--- a/source/blender/compositor/operations/COM_SetValueOperation.h
+++ b/source/blender/compositor/operations/COM_SetValueOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_SetVectorOperation.cc b/source/blender/compositor/operations/COM_SetVectorOperation.cc
index c1db429b41ea169ea53580142881f48381a66e7a..ae9056c1a866bf44d3f11b78f2f1009a448eb346 100644
--- a/source/blender/compositor/operations/COM_SetVectorOperation.cc
+++ b/source/blender/compositor/operations/COM_SetVectorOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SetVectorOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_SetVectorOperation.h b/source/blender/compositor/operations/COM_SetVectorOperation.h
index 291fef37817cf004d5e01c0a6159a19b5a6df909..39b2184e17620f53099206275c83559328b6b6da 100644
--- a/source/blender/compositor/operations/COM_SetVectorOperation.h
+++ b/source/blender/compositor/operations/COM_SetVectorOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_SocketProxyOperation.cc b/source/blender/compositor/operations/COM_SocketProxyOperation.cc
index fd37f0b5f4fbf11a08f1f3d14f616d42d511475a..2d9fd1ede49dd1a5b553feaa2a0f2e8529b9a31b 100644
--- a/source/blender/compositor/operations/COM_SocketProxyOperation.cc
+++ b/source/blender/compositor/operations/COM_SocketProxyOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SocketProxyOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_SocketProxyOperation.h b/source/blender/compositor/operations/COM_SocketProxyOperation.h
index e9740cf43bcae914087c8754cd1285a8f1bee1e5..613f9f49792ff9f1c9bf73a6891f1d93c155b377 100644
--- a/source/blender/compositor/operations/COM_SocketProxyOperation.h
+++ b/source/blender/compositor/operations/COM_SocketProxyOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_SplitOperation.cc b/source/blender/compositor/operations/COM_SplitOperation.cc
index 39d097b02e1166337ad372fba16c011e0349a6c0..4cf08fb4bda0334a213c01db48094bcb9df99de7 100644
--- a/source/blender/compositor/operations/COM_SplitOperation.cc
+++ b/source/blender/compositor/operations/COM_SplitOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_SplitOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_SplitOperation.h b/source/blender/compositor/operations/COM_SplitOperation.h
index 2d2b2e89cca3f168ffe6004f651bee61839fcab0..301cdf697b2b2c6fa8dc6d1f695e63f31ed8a11c 100644
--- a/source/blender/compositor/operations/COM_SplitOperation.h
+++ b/source/blender/compositor/operations/COM_SplitOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_SunBeamsOperation.cc b/source/blender/compositor/operations/COM_SunBeamsOperation.cc
index ba1363d119360035a0a7b76f2dca6dfb79c32358..1628c0fa1f897a4fe8bdfa406a1c2baf1617b47f 100644
--- a/source/blender/compositor/operations/COM_SunBeamsOperation.cc
+++ b/source/blender/compositor/operations/COM_SunBeamsOperation.cc
@@ -1,19 +1,5 @@
-/* This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2014, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. */
 
 #include "MEM_guardedalloc.h"
 
diff --git a/source/blender/compositor/operations/COM_SunBeamsOperation.h b/source/blender/compositor/operations/COM_SunBeamsOperation.h
index c40d540996ef2b2347af3dc9d6fd0f59d60ac20b..87e065a8602d526329dd1664837be22ecbffa670 100644
--- a/source/blender/compositor/operations/COM_SunBeamsOperation.h
+++ b/source/blender/compositor/operations/COM_SunBeamsOperation.h
@@ -1,19 +1,5 @@
-/* This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2014, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_TextureOperation.cc b/source/blender/compositor/operations/COM_TextureOperation.cc
index f0e661818f841d3fd3fbd0c0b6a3c45341b7065a..8b27c3aded483891be9ac6faf5f704f6a8798748 100644
--- a/source/blender/compositor/operations/COM_TextureOperation.cc
+++ b/source/blender/compositor/operations/COM_TextureOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_TextureOperation.h"
 #include "COM_WorkScheduler.h"
diff --git a/source/blender/compositor/operations/COM_TextureOperation.h b/source/blender/compositor/operations/COM_TextureOperation.h
index bf1bb1affb8f4acb2428a13ba1e0f4a0c570d55d..cea52d039624910a31be3d9d083c9bbe96be338e 100644
--- a/source/blender/compositor/operations/COM_TextureOperation.h
+++ b/source/blender/compositor/operations/COM_TextureOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_TonemapOperation.cc b/source/blender/compositor/operations/COM_TonemapOperation.cc
index bc370e3496b928ffd47ef2a724b79786260495de..fa40cd36f4c9a544548461320b4d6d76412aaf83 100644
--- a/source/blender/compositor/operations/COM_TonemapOperation.cc
+++ b/source/blender/compositor/operations/COM_TonemapOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_TonemapOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_TonemapOperation.h b/source/blender/compositor/operations/COM_TonemapOperation.h
index a20c061965e4a4c122c8e18396ee6c0111f3554b..84ee9c563fdaec43f39063fd0a0cb1f73c04b296 100644
--- a/source/blender/compositor/operations/COM_TonemapOperation.h
+++ b/source/blender/compositor/operations/COM_TonemapOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_TrackPositionOperation.cc b/source/blender/compositor/operations/COM_TrackPositionOperation.cc
index 61ce750a2f4507aea94ef3617d61bb507a0de826..db65edca31b148a3aa734a3b086043f98932206c 100644
--- a/source/blender/compositor/operations/COM_TrackPositionOperation.cc
+++ b/source/blender/compositor/operations/COM_TrackPositionOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #include "COM_TrackPositionOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_TrackPositionOperation.h b/source/blender/compositor/operations/COM_TrackPositionOperation.h
index 1de8b72f7831c31bd712b42896ff25466f77aa2c..6130aa20f0e83d254dc366ea22e13afb5a025261 100644
--- a/source/blender/compositor/operations/COM_TrackPositionOperation.h
+++ b/source/blender/compositor/operations/COM_TrackPositionOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2012, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_TransformOperation.cc b/source/blender/compositor/operations/COM_TransformOperation.cc
index f18e7e44094b03b8b2d070da4a2d4edefe03a02f..36a4899ef5388def5206ca8026a2ec92c032eefd 100644
--- a/source/blender/compositor/operations/COM_TransformOperation.cc
+++ b/source/blender/compositor/operations/COM_TransformOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "COM_TransformOperation.h"
 #include "COM_RotateOperation.h"
diff --git a/source/blender/compositor/operations/COM_TransformOperation.h b/source/blender/compositor/operations/COM_TransformOperation.h
index 4db2145cc2df4fe421ec031fca9dc91510cc363d..846962abd88cc067738e1b244f3be5eed9143f58 100644
--- a/source/blender/compositor/operations/COM_TransformOperation.h
+++ b/source/blender/compositor/operations/COM_TransformOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_TranslateOperation.cc b/source/blender/compositor/operations/COM_TranslateOperation.cc
index d3c87b09fb7e73859609010b335e41742a475db8..c5599cabe1ac1946a70557689bf78be72392a383 100644
--- a/source/blender/compositor/operations/COM_TranslateOperation.cc
+++ b/source/blender/compositor/operations/COM_TranslateOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_TranslateOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_TranslateOperation.h b/source/blender/compositor/operations/COM_TranslateOperation.h
index 30e489bf395bcf9ec40ef2ad54ba0659bd50403b..4ac84315dfd6f64c0bb07d1afcf99c1a4a00a928 100644
--- a/source/blender/compositor/operations/COM_TranslateOperation.h
+++ b/source/blender/compositor/operations/COM_TranslateOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_VariableSizeBokehBlurOperation.cc b/source/blender/compositor/operations/COM_VariableSizeBokehBlurOperation.cc
index 86bc6d0041a7defd9540f5e33ee1919b47d010b5..d4365af4860073307fcb98f193cfabe4f3d8e015 100644
--- a/source/blender/compositor/operations/COM_VariableSizeBokehBlurOperation.cc
+++ b/source/blender/compositor/operations/COM_VariableSizeBokehBlurOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_VariableSizeBokehBlurOperation.h"
 #include "COM_OpenCLDevice.h"
diff --git a/source/blender/compositor/operations/COM_VariableSizeBokehBlurOperation.h b/source/blender/compositor/operations/COM_VariableSizeBokehBlurOperation.h
index 7e53ed8a97907480dcd97f84be2c5fa086a7b896..3b733c7ba03edf0494b429b74e2c171397f02423 100644
--- a/source/blender/compositor/operations/COM_VariableSizeBokehBlurOperation.h
+++ b/source/blender/compositor/operations/COM_VariableSizeBokehBlurOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_VectorBlurOperation.cc b/source/blender/compositor/operations/COM_VectorBlurOperation.cc
index 1d097b37ca5822fb9ee589bc7d9d8c908573a456..71c61a6e5880aa77103501cd05ee6b37cf2a5e81 100644
--- a/source/blender/compositor/operations/COM_VectorBlurOperation.cc
+++ b/source/blender/compositor/operations/COM_VectorBlurOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "BLI_jitter_2d.h"
 
diff --git a/source/blender/compositor/operations/COM_VectorBlurOperation.h b/source/blender/compositor/operations/COM_VectorBlurOperation.h
index 75df9d9e0241034072dc5bfc8d16a391a66c58c0..9c83c0645c2786f7c55d7a5f065fea36695594ac 100644
--- a/source/blender/compositor/operations/COM_VectorBlurOperation.h
+++ b/source/blender/compositor/operations/COM_VectorBlurOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_VectorCurveOperation.cc b/source/blender/compositor/operations/COM_VectorCurveOperation.cc
index c7cd8dc56849c2c538eee4da730ccad2faba0917..13a8c6541e8c703689dd8161543a12bcd2b4bf39 100644
--- a/source/blender/compositor/operations/COM_VectorCurveOperation.cc
+++ b/source/blender/compositor/operations/COM_VectorCurveOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_VectorCurveOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_VectorCurveOperation.h b/source/blender/compositor/operations/COM_VectorCurveOperation.h
index 87864e08e255cd586ea77ba281fcb3af5043e8af..0153f29687f0bd3b12c4ed034395809e821da9a5 100644
--- a/source/blender/compositor/operations/COM_VectorCurveOperation.h
+++ b/source/blender/compositor/operations/COM_VectorCurveOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ViewerOperation.cc b/source/blender/compositor/operations/COM_ViewerOperation.cc
index 205596b46d1e883f983a939386bb841f94859bd2..a00e537bd0b8dad45c498c2a1dfd6d76e88b434c 100644
--- a/source/blender/compositor/operations/COM_ViewerOperation.cc
+++ b/source/blender/compositor/operations/COM_ViewerOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ViewerOperation.h"
 #include "BKE_image.h"
diff --git a/source/blender/compositor/operations/COM_ViewerOperation.h b/source/blender/compositor/operations/COM_ViewerOperation.h
index 7fc5ae36ad9e24659d493a1a13cb469840c17eae..1ad6cc51269e6571e9abc34933c77ea6d6758645 100644
--- a/source/blender/compositor/operations/COM_ViewerOperation.h
+++ b/source/blender/compositor/operations/COM_ViewerOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_WrapOperation.cc b/source/blender/compositor/operations/COM_WrapOperation.cc
index 336e1b72520e18fa280787b8fe0134c21bad1f59..769f00483dd6d9e79f92074bcc27d08a69be5ea4 100644
--- a/source/blender/compositor/operations/COM_WrapOperation.cc
+++ b/source/blender/compositor/operations/COM_WrapOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include <cmath>
 
diff --git a/source/blender/compositor/operations/COM_WrapOperation.h b/source/blender/compositor/operations/COM_WrapOperation.h
index e8ec97fa5f2fa2e6a396f7ad98c30352b523cf21..b7aa85fc6686a5ebe22f7a4931dd7ffbd19884bb 100644
--- a/source/blender/compositor/operations/COM_WrapOperation.h
+++ b/source/blender/compositor/operations/COM_WrapOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_WriteBufferOperation.cc b/source/blender/compositor/operations/COM_WriteBufferOperation.cc
index 2511488615ee9bd8e72474cd4395bf7ed608487b..9073c92b154836ec5e82d3da51f76beec4a17dad 100644
--- a/source/blender/compositor/operations/COM_WriteBufferOperation.cc
+++ b/source/blender/compositor/operations/COM_WriteBufferOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_WriteBufferOperation.h"
 #include "COM_OpenCLDevice.h"
diff --git a/source/blender/compositor/operations/COM_WriteBufferOperation.h b/source/blender/compositor/operations/COM_WriteBufferOperation.h
index cf6b7f655cea80a93d412e1d3e8201dd03363792..e57cd0ba93dcc001e6d9995a99267b0fde500420 100644
--- a/source/blender/compositor/operations/COM_WriteBufferOperation.h
+++ b/source/blender/compositor/operations/COM_WriteBufferOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/operations/COM_ZCombineOperation.cc b/source/blender/compositor/operations/COM_ZCombineOperation.cc
index c9b3e70a9cd723ee00f9235165b84c6d6067de52..51086c809b3f5a2c924a2c9d6f2e92ce3b8f4e04 100644
--- a/source/blender/compositor/operations/COM_ZCombineOperation.cc
+++ b/source/blender/compositor/operations/COM_ZCombineOperation.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #include "COM_ZCombineOperation.h"
 
diff --git a/source/blender/compositor/operations/COM_ZCombineOperation.h b/source/blender/compositor/operations/COM_ZCombineOperation.h
index ffc1bdd93b4634d83f8d5d3290c9efdd2f876ba2..0db8d7e7f95f7e880eed0018feebb095e4d82f4e 100644
--- a/source/blender/compositor/operations/COM_ZCombineOperation.h
+++ b/source/blender/compositor/operations/COM_ZCombineOperation.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/compositor/tests/COM_BufferArea_test.cc b/source/blender/compositor/tests/COM_BufferArea_test.cc
index 8dad0b0fea26f98f339acbc7a88a206b047b7dd4..f4d9c36d3002556ad34b55e9d43433396c54d0c3 100644
--- a/source/blender/compositor/tests/COM_BufferArea_test.cc
+++ b/source/blender/compositor/tests/COM_BufferArea_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/compositor/tests/COM_BufferRange_test.cc b/source/blender/compositor/tests/COM_BufferRange_test.cc
index 9ebeb181fa656dcaa0442889326b4209e3c72298..a7f16758bad1f396f6ab044bdb7341f251378085 100644
--- a/source/blender/compositor/tests/COM_BufferRange_test.cc
+++ b/source/blender/compositor/tests/COM_BufferRange_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/compositor/tests/COM_BuffersIterator_test.cc b/source/blender/compositor/tests/COM_BuffersIterator_test.cc
index 0a288cdc5f0e6bd1e60d8bc8e84080a165225ebb..03748760029991ad4e451f31c147a39032379aa8 100644
--- a/source/blender/compositor/tests/COM_BuffersIterator_test.cc
+++ b/source/blender/compositor/tests/COM_BuffersIterator_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/compositor/tests/COM_NodeOperation_test.cc b/source/blender/compositor/tests/COM_NodeOperation_test.cc
index ea61df22f881f313b4b5eb1f59f784d86e8b2f2b..02ee17db4597bbc701ed6327487cdbd1b0f7ec54 100644
--- a/source/blender/compositor/tests/COM_NodeOperation_test.cc
+++ b/source/blender/compositor/tests/COM_NodeOperation_test.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/datatoc/CMakeLists.txt b/source/blender/datatoc/CMakeLists.txt
index 756ab15b16386f744f31786cfcaecd0792b2c83e..5b75928e5a0f9a989f9d672871bc99d110dddf39 100644
--- a/source/blender/datatoc/CMakeLists.txt
+++ b/source/blender/datatoc/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public Licenses
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 
 # -----------------------------------------------------------------------------
diff --git a/source/blender/datatoc/datatoc.c b/source/blender/datatoc/datatoc.c
index 816353be9de752b0cd7747cad5e3caa52c7d7bd5..cf505f3eab18fb035842924278b1288d47e69bc9 100644
--- a/source/blender/datatoc/datatoc.c
+++ b/source/blender/datatoc/datatoc.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup datatoc
diff --git a/source/blender/datatoc/datatoc_icon.c b/source/blender/datatoc/datatoc_icon.c
index b4ee1c6d4c9426cdf1414e3ac63dcf0b4b6d49a1..780dea34b93b59498601d3fdafe0243ff61ba57b 100644
--- a/source/blender/datatoc/datatoc_icon.c
+++ b/source/blender/datatoc/datatoc_icon.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup datatoc
diff --git a/source/blender/datatoc/datatoc_icon.py b/source/blender/datatoc/datatoc_icon.py
index 875e5359079d3aa6a7258d859130afc19df07726..cce464dbc4138860b1c0936fdcaa179384da9d87 100755
--- a/source/blender/datatoc/datatoc_icon.py
+++ b/source/blender/datatoc/datatoc_icon.py
@@ -1,21 +1,5 @@
 #!/usr/bin/env python3
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 _IS_BIG_ENDIAN = (__import__("sys").byteorder != 'little')
diff --git a/source/blender/datatoc/datatoc_icon_split.py b/source/blender/datatoc/datatoc_icon_split.py
index e58dbb1a61f38ceb2f66fb5c950959126d461d0a..fcfd63f87071bbb3265834daced2875c4a2938a0 100755
--- a/source/blender/datatoc/datatoc_icon_split.py
+++ b/source/blender/datatoc/datatoc_icon_split.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/source/blender/datatoc/datatoc_icon_split_to_png.py b/source/blender/datatoc/datatoc_icon_split_to_png.py
index f8ddcdd216f077310a63d2ee77a6a5eff55e0291..519b11f8418f84aacb2f336d4a9a72ec1ae0f6bf 100755
--- a/source/blender/datatoc/datatoc_icon_split_to_png.py
+++ b/source/blender/datatoc/datatoc_icon_split_to_png.py
@@ -1,22 +1,6 @@
 #!/usr/bin/env python3
 
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # This script is just to view the icons
 
diff --git a/source/blender/depsgraph/CMakeLists.txt b/source/blender/depsgraph/CMakeLists.txt
index 91c7fac68de947ee933127c92fd1c9327a4284e8..7e3bfbd38728780dddfea1019c608c82b94204cb 100644
--- a/source/blender/depsgraph/CMakeLists.txt
+++ b/source/blender/depsgraph/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2014, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2014 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/depsgraph/DEG_depsgraph.h b/source/blender/depsgraph/DEG_depsgraph.h
index b8ff49640b7beae2f2aa6f8c486e3df9d275e644..00efa779c4d57d1d5c956cdb5d720a7a91810750 100644
--- a/source/blender/depsgraph/DEG_depsgraph.h
+++ b/source/blender/depsgraph/DEG_depsgraph.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/DEG_depsgraph_build.h b/source/blender/depsgraph/DEG_depsgraph_build.h
index 8e4a7dafcd6fd85a408610f20ca17e02fc979dd8..763d2d2903500c109fbea15318c139373762e005 100644
--- a/source/blender/depsgraph/DEG_depsgraph_build.h
+++ b/source/blender/depsgraph/DEG_depsgraph_build.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/DEG_depsgraph_debug.h b/source/blender/depsgraph/DEG_depsgraph_debug.h
index 5c400a1392fe0f77b2af2a7459dbae961f090002..2c07852da5a7e0e36b2d646fd379e2993ef6b210 100644
--- a/source/blender/depsgraph/DEG_depsgraph_debug.h
+++ b/source/blender/depsgraph/DEG_depsgraph_debug.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/DEG_depsgraph_physics.h b/source/blender/depsgraph/DEG_depsgraph_physics.h
index 7bd2994b426ddb9c7c786237e1fe4da024548262..4598afbc81792a3606301d9eb6613c78ea2d95f9 100644
--- a/source/blender/depsgraph/DEG_depsgraph_physics.h
+++ b/source/blender/depsgraph/DEG_depsgraph_physics.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/DEG_depsgraph_query.h b/source/blender/depsgraph/DEG_depsgraph_query.h
index ebb5f4d669cd41b261be640c13993c016d45a611..ade75fa2f6fdb39154ea5c3da2731d0f1bf5636b 100644
--- a/source/blender/depsgraph/DEG_depsgraph_query.h
+++ b/source/blender/depsgraph/DEG_depsgraph_query.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder.cc b/source/blender/depsgraph/intern/builder/deg_builder.cc
index 990021dc29bfc6c4c61fa561330acb7a23ca73df..02ff3f7b656de84a3b9739ad5b47fdd7688ef03d 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder.h b/source/blender/depsgraph/intern/builder/deg_builder.h
index 6e1c8d8526ffd8d8478fba3fbcc8468aa7f945d3..8fbe255ed9dd08ad2eab7f0e72a1af5fb5bb84d8 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_cache.cc b/source/blender/depsgraph/intern/builder/deg_builder_cache.cc
index 0afaa72aad071086052eaa1a4ce06d3724553cc5..7f88f54fdca4e2d9cd9957a7ca611c4468d123dd 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_cache.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_cache.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_cache.h b/source/blender/depsgraph/intern/builder/deg_builder_cache.h
index 690046cb0d34b62c128ff64579e81e2bfb109402..2d2bdeaf82556397285a12f8059dca1d532e51c1 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_cache.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_cache.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_cycle.cc b/source/blender/depsgraph/intern/builder/deg_builder_cycle.cc
index dbc8bbd31fa5e45f917286e8a022333fda47b62f..d632c4e2f7ea3c9a778f2791b9b6dcfe2324a96c 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_cycle.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_cycle.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_cycle.h b/source/blender/depsgraph/intern/builder/deg_builder_cycle.h
index f9674e0e60d402acc3f6d7029738710cad9026a5..8e94e0ae21f9892f5d2c078e5efd0916cc4960e0 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_cycle.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_cycle.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_map.cc b/source/blender/depsgraph/intern/builder/deg_builder_map.cc
index 6e926da6b29260cd6694f100d5c98c029f8bbb15..30c8cedcfd729b191cf2166d80d35bae25130254 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_map.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_map.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_map.h b/source/blender/depsgraph/intern/builder/deg_builder_map.h
index 53f6a722e85acb3951ec6df658bdaf77f150a4db..50ebadeb382f66db6125ee0c91eead5e4ae3c0d0 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_map.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_map.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
index ba1432d9ec8f25d63d10c41d5456ccdc6da1c6b8..2a0d5ce9116613b13f349284e6b5fe2edd0f0500 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_nodes.h b/source/blender/depsgraph/intern/builder/deg_builder_nodes.h
index 6e3193834787555e8c432e9a9dc60fdcb4a5f01b..be9983edf85003d1c39d94a36da27feb436ea77c 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_nodes.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_nodes.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_nodes_rig.cc b/source/blender/depsgraph/intern/builder/deg_builder_nodes_rig.cc
index 0e196450f60c2e2316fe9e5134e23e1d2ee60b95..b3157f1547003052e565e71351ec3b0fda431678 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_nodes_rig.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_nodes_rig.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_nodes_scene.cc b/source/blender/depsgraph/intern/builder/deg_builder_nodes_scene.cc
index 090b7f9dcb362e3b8afc0b3e4cffffef2ff38171..0d02e9b7d3ee468b7ebc5a1f4589c5817fe8e1aa 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_nodes_scene.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_nodes_scene.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_nodes_view_layer.cc b/source/blender/depsgraph/intern/builder/deg_builder_nodes_view_layer.cc
index b6e3f4fa935f8ac37d70c5fa3fb558fe859dc067..32ec94211a0705be8b215bc3a85dabb05416cbce 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_nodes_view_layer.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_nodes_view_layer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_pchanmap.cc b/source/blender/depsgraph/intern/builder/deg_builder_pchanmap.cc
index 79f358213d3339db9bbab0c07e657ef9a533ba10..2b04696de730a5bb737e311f88fb2ac53e6a4bb3 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_pchanmap.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_pchanmap.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_pchanmap.h b/source/blender/depsgraph/intern/builder/deg_builder_pchanmap.h
index 42f9ec9cc6a722b6452d550b01754247b51eb800..2f98c8b419cb12e5951d575c371685fb50958f2e 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_pchanmap.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_pchanmap.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
index ac89b6b019803b72fed9a87c9ca64570b2097676..25d7a0a6ac2b18aabe17261d6cb5b47d5507c4bf 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.h b/source/blender/depsgraph/intern/builder/deg_builder_relations.h
index df315176a92d8e580f9711cab5b8c1070aa54557..e1312c68cea4054f4dd75d8132f149b437483cdb 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations_drivers.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations_drivers.cc
index 6e5c1f05cf3fc4d62abb8fc26b2085dbcbdea254..009b191b91e8ea12f69577f59a69c60cb450f458 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations_drivers.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations_drivers.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations_drivers.h b/source/blender/depsgraph/intern/builder/deg_builder_relations_drivers.h
index 4ad5bdda1ef116efd28ef488cf954dd6655db99b..e517dd6a927a4390e7cf0b8a8fe65166d907b504 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations_drivers.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations_drivers.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations_impl.h b/source/blender/depsgraph/intern/builder/deg_builder_relations_impl.h
index 14ed153832df24ffece01e6a3030e6e7cdaf177c..5cbd8c8dd75991e88f08e186d020278487d54069 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations_impl.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations_impl.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations_keys.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations_keys.cc
index bad4e96c60b24cd0fc0b5e1faff11c1fc8ddb04f..eeaab623482844510455fdf2cf5f9aa5167dddc8 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations_keys.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations_keys.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations_rig.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations_rig.cc
index 377ef9fc357456583b4d0e47024650dd6ecbc46d..f8785a8aad2d87b9e1b5fc7d61c18dae6f310b67 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations_rig.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations_rig.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations_scene.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations_scene.cc
index 74948a336e9303f5999ce27a2a818ef614a68520..cdb7361afc0f381be41c8996682b923f34978412 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations_scene.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations_scene.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations_view_layer.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations_view_layer.cc
index c37fb1b83a48d691e9114f1c9c844c58df652715..f9306620a9de938fa57426fdc24b756dad78ba55 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations_view_layer.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations_view_layer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_remove_noop.cc b/source/blender/depsgraph/intern/builder/deg_builder_remove_noop.cc
index 77d1a89c256d7e6fa60da563d6d5e07cff0e5d4a..992620a6f03ada543d32f5be898087b7f1600569 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_remove_noop.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_remove_noop.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_remove_noop.h b/source/blender/depsgraph/intern/builder/deg_builder_remove_noop.h
index e30e90af9c0f7d26f7e02bb20f5d9d179096106f..922d2d7dc05e6165416c7ff87888d97f785abc63 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_remove_noop.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_remove_noop.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_rna.cc b/source/blender/depsgraph/intern/builder/deg_builder_rna.cc
index 76a115a06c8b6b95eb7d5b809f8f70395e5a9c95..1b96810e8b382b0ddfd7c101fd6a726c81d27793 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_rna.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_rna.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_rna.h b/source/blender/depsgraph/intern/builder/deg_builder_rna.h
index 24d7f5f3a30b86dcb2db5b5b963b5f66be5c64a0..4f482d4352d62613f1701a5362cfedbb3260aa8e 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_rna.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_rna.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_rna_test.cc b/source/blender/depsgraph/intern/builder/deg_builder_rna_test.cc
index b7a5aa7c1718d27e9d082e65bdf83e93204f0653..c548777ec7318f7ffb70d6ac7f9edc4bbf36490c 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_rna_test.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_rna_test.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_transitive.cc b/source/blender/depsgraph/intern/builder/deg_builder_transitive.cc
index c30778e7a91057d6800e2380e59db1b9b9b26bb2..0bc381d316ed685aca950ea60e3836f15f047ca9 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_transitive.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_transitive.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_transitive.h b/source/blender/depsgraph/intern/builder/deg_builder_transitive.h
index 3f083381f83e46f0624cd40c76ca0414cd1e7a50..8b208610203bb3199af50ef3734d7908166ee910 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_transitive.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_transitive.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/pipeline.cc b/source/blender/depsgraph/intern/builder/pipeline.cc
index 28e4c973c1e73d889e9033dc598914d0500626ad..540b8e173f15a236dbbd6468c4d92c28acaf0994 100644
--- a/source/blender/depsgraph/intern/builder/pipeline.cc
+++ b/source/blender/depsgraph/intern/builder/pipeline.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "pipeline.h"
 
diff --git a/source/blender/depsgraph/intern/builder/pipeline.h b/source/blender/depsgraph/intern/builder/pipeline.h
index d0ccf352c215ac7b762f7cf3fef446dd48b28ece..b106e73b97ca6d4784637155ec5ed0a424c64440 100644
--- a/source/blender/depsgraph/intern/builder/pipeline.h
+++ b/source/blender/depsgraph/intern/builder/pipeline.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/pipeline_all_objects.cc b/source/blender/depsgraph/intern/builder/pipeline_all_objects.cc
index dd71cc0504e4798451ddadaafff96510a4e6415c..74d151c65d776ccd516b14504951795aba52e14a 100644
--- a/source/blender/depsgraph/intern/builder/pipeline_all_objects.cc
+++ b/source/blender/depsgraph/intern/builder/pipeline_all_objects.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "pipeline_all_objects.h"
 
diff --git a/source/blender/depsgraph/intern/builder/pipeline_all_objects.h b/source/blender/depsgraph/intern/builder/pipeline_all_objects.h
index 11ca2314331b5cd339d978f6b01fd84bbd4df12f..75d9605dec756879539813558a0559cd5b95cf26 100644
--- a/source/blender/depsgraph/intern/builder/pipeline_all_objects.h
+++ b/source/blender/depsgraph/intern/builder/pipeline_all_objects.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/pipeline_compositor.cc b/source/blender/depsgraph/intern/builder/pipeline_compositor.cc
index 5fa9788cf726728891cb634af6a3b15e63c2541e..3f739b9cf4be02cb9e56763d480dd0c450509dd8 100644
--- a/source/blender/depsgraph/intern/builder/pipeline_compositor.cc
+++ b/source/blender/depsgraph/intern/builder/pipeline_compositor.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "pipeline_compositor.h"
 
diff --git a/source/blender/depsgraph/intern/builder/pipeline_compositor.h b/source/blender/depsgraph/intern/builder/pipeline_compositor.h
index 46f1e3694d34738dcd90d5fd2476fa082627844a..3325741c94a0b6cbf4477363afe550449974908e 100644
--- a/source/blender/depsgraph/intern/builder/pipeline_compositor.h
+++ b/source/blender/depsgraph/intern/builder/pipeline_compositor.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/pipeline_from_ids.cc b/source/blender/depsgraph/intern/builder/pipeline_from_ids.cc
index b77b935b9f69366e9e1956b6595ffa247cd59e96..ee10b28a30685f4c26a0fda9d769dc817b77a5d5 100644
--- a/source/blender/depsgraph/intern/builder/pipeline_from_ids.cc
+++ b/source/blender/depsgraph/intern/builder/pipeline_from_ids.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "pipeline_from_ids.h"
 
diff --git a/source/blender/depsgraph/intern/builder/pipeline_from_ids.h b/source/blender/depsgraph/intern/builder/pipeline_from_ids.h
index 8c89bbf16603113c1af88b01ae4f91b3635a9dc9..a2c75c048cb5092d28c1c0711acc29556bf2174c 100644
--- a/source/blender/depsgraph/intern/builder/pipeline_from_ids.h
+++ b/source/blender/depsgraph/intern/builder/pipeline_from_ids.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/pipeline_render.cc b/source/blender/depsgraph/intern/builder/pipeline_render.cc
index 9b40e4644a28ee08cd9a5dc2deeef6cd0151e54d..269c279521532eb980adda0937a0e490d27eb147 100644
--- a/source/blender/depsgraph/intern/builder/pipeline_render.cc
+++ b/source/blender/depsgraph/intern/builder/pipeline_render.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "pipeline_render.h"
 
diff --git a/source/blender/depsgraph/intern/builder/pipeline_render.h b/source/blender/depsgraph/intern/builder/pipeline_render.h
index 91a4be137b6b95255a5c9fe68e06eb67eadf56c6..cb704f84c594f70ad13a69a9aa124c821e91e145 100644
--- a/source/blender/depsgraph/intern/builder/pipeline_render.h
+++ b/source/blender/depsgraph/intern/builder/pipeline_render.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/builder/pipeline_view_layer.cc b/source/blender/depsgraph/intern/builder/pipeline_view_layer.cc
index 5ae577ab031bccf379e45076936455bdb9dc0388..a240395fd7713a3e8f6ec35a6d4848e6c3cc6ef7 100644
--- a/source/blender/depsgraph/intern/builder/pipeline_view_layer.cc
+++ b/source/blender/depsgraph/intern/builder/pipeline_view_layer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "pipeline_view_layer.h"
 
diff --git a/source/blender/depsgraph/intern/builder/pipeline_view_layer.h b/source/blender/depsgraph/intern/builder/pipeline_view_layer.h
index aa85dd7a47bd26f148e95a19eefc23493a8a0058..18b9ce5d5ff07ab0340fe87d83c59105a6fdddad 100644
--- a/source/blender/depsgraph/intern/builder/pipeline_view_layer.h
+++ b/source/blender/depsgraph/intern/builder/pipeline_view_layer.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/debug/deg_debug.cc b/source/blender/depsgraph/intern/debug/deg_debug.cc
index 47c97211886c76c95ef3a211af94f19b4a06ba90..2b2bbdc0fe6a0bc12ad2eb12c182f5a496e3e469 100644
--- a/source/blender/depsgraph/intern/debug/deg_debug.cc
+++ b/source/blender/depsgraph/intern/debug/deg_debug.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/debug/deg_debug.h b/source/blender/depsgraph/intern/debug/deg_debug.h
index 043cdc853333c1f6c716cdee616a06154150d5e1..ee6c5b046b79f61e74f0ae7b5939b8f641158375 100644
--- a/source/blender/depsgraph/intern/debug/deg_debug.h
+++ b/source/blender/depsgraph/intern/debug/deg_debug.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/debug/deg_debug_relations_graphviz.cc b/source/blender/depsgraph/intern/debug/deg_debug_relations_graphviz.cc
index ef82584d67118cdddb3ee9e494c1e936c88f55c0..b8d0fb6c365dc8c03cf123b590b96d01ff25902d 100644
--- a/source/blender/depsgraph/intern/debug/deg_debug_relations_graphviz.cc
+++ b/source/blender/depsgraph/intern/debug/deg_debug_relations_graphviz.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/debug/deg_debug_stats_gnuplot.cc b/source/blender/depsgraph/intern/debug/deg_debug_stats_gnuplot.cc
index df343a3eb28966f2994ac9cae3f0ba33121ad620..6a6f146ac75ed238b11660b3bb0655cf41ccebd8 100644
--- a/source/blender/depsgraph/intern/debug/deg_debug_stats_gnuplot.cc
+++ b/source/blender/depsgraph/intern/debug/deg_debug_stats_gnuplot.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/debug/deg_time_average.h b/source/blender/depsgraph/intern/debug/deg_time_average.h
index 4ed78fe70cb6521067c1264a5e92c491d001a72d..cc47f03b221e2beaad2ccaf21025fe40480a4621 100644
--- a/source/blender/depsgraph/intern/debug/deg_time_average.h
+++ b/source/blender/depsgraph/intern/debug/deg_time_average.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph.cc b/source/blender/depsgraph/intern/depsgraph.cc
index b348ab0f432ca4125fa1363694a9a389fe53dbac..4514084059a489cc7cc4e9115c656f60ff22a7ec 100644
--- a/source/blender/depsgraph/intern/depsgraph.cc
+++ b/source/blender/depsgraph/intern/depsgraph.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph.h b/source/blender/depsgraph/intern/depsgraph.h
index bfe6ed649f6b793480c2b88b8394e2782f862dbb..ca4ce058904e8b4c8d96812236e7d4fc5dd2614f 100644
--- a/source/blender/depsgraph/intern/depsgraph.h
+++ b/source/blender/depsgraph/intern/depsgraph.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_build.cc b/source/blender/depsgraph/intern/depsgraph_build.cc
index acb8fa8fe8872cbe528bd542456b53190e11ab3d..c64b7bc1eb7193062b01975e9a8d79ea860f107f 100644
--- a/source/blender/depsgraph/intern/depsgraph_build.cc
+++ b/source/blender/depsgraph/intern/depsgraph_build.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_debug.cc b/source/blender/depsgraph/intern/depsgraph_debug.cc
index 9e3cbdbec09ea5319b6bb4e272249b4910fdd372..ddad00bc0e8bfaa207afa103f799dc4c1b912905 100644
--- a/source/blender/depsgraph/intern/depsgraph_debug.cc
+++ b/source/blender/depsgraph/intern/depsgraph_debug.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_eval.cc b/source/blender/depsgraph/intern/depsgraph_eval.cc
index ae94fbcfdb860001e474d8c0faaea1b0d5f2431d..b997ac14f99c6cf356d5861673b1d08710e20b94 100644
--- a/source/blender/depsgraph/intern/depsgraph_eval.cc
+++ b/source/blender/depsgraph/intern/depsgraph_eval.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_physics.cc b/source/blender/depsgraph/intern/depsgraph_physics.cc
index a70c0c10de0a08a9c555f6898d40d78a9602080f..5660d5eb1bd5c89cc28a4a7929525489133b9cea 100644
--- a/source/blender/depsgraph/intern/depsgraph_physics.cc
+++ b/source/blender/depsgraph/intern/depsgraph_physics.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_physics.h b/source/blender/depsgraph/intern/depsgraph_physics.h
index dbcb577b0b2b35562af73320c658b86f60c439f9..a8d37f76b09f75522e6204cf897fd1d8b0001b4c 100644
--- a/source/blender/depsgraph/intern/depsgraph_physics.h
+++ b/source/blender/depsgraph/intern/depsgraph_physics.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_query.cc b/source/blender/depsgraph/intern/depsgraph_query.cc
index 6c1947728b52e846745e20544090c7d1a98cdd0c..634eb0a4f886418bf882828ce31e31233e1cb3d0 100644
--- a/source/blender/depsgraph/intern/depsgraph_query.cc
+++ b/source/blender/depsgraph/intern/depsgraph_query.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_query_foreach.cc b/source/blender/depsgraph/intern/depsgraph_query_foreach.cc
index 65a21323258837de3e96eff68d02941555e257b0..2839f0daed778958b67c20076c020baf37771b91 100644
--- a/source/blender/depsgraph/intern/depsgraph_query_foreach.cc
+++ b/source/blender/depsgraph/intern/depsgraph_query_foreach.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_query_iter.cc b/source/blender/depsgraph/intern/depsgraph_query_iter.cc
index 0b219dcbf5ee1eba4143e3e96e2c4cabbe788e47..5788e8efa07bd2c6fd4ef6a72347dbfe4f8c047c 100644
--- a/source/blender/depsgraph/intern/depsgraph_query_iter.cc
+++ b/source/blender/depsgraph/intern/depsgraph_query_iter.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_registry.cc b/source/blender/depsgraph/intern/depsgraph_registry.cc
index cc9fcf78292b17dac7ea611a38c05197a4dadfa7..96336167b5a449c375e9618804fe316b27364490 100644
--- a/source/blender/depsgraph/intern/depsgraph_registry.cc
+++ b/source/blender/depsgraph/intern/depsgraph_registry.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_registry.h b/source/blender/depsgraph/intern/depsgraph_registry.h
index dc29f9d8edf53ace706ee924df3bf7b558ada27d..2746f17590a2c2a0c0a84d82f26354639e9e904d 100644
--- a/source/blender/depsgraph/intern/depsgraph_registry.h
+++ b/source/blender/depsgraph/intern/depsgraph_registry.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_relation.cc b/source/blender/depsgraph/intern/depsgraph_relation.cc
index 904a6b56ae9bb07eaed00284fc4189dbd83d791f..0b9b520b328600e2894ad287e461ac3855a149de 100644
--- a/source/blender/depsgraph/intern/depsgraph_relation.cc
+++ b/source/blender/depsgraph/intern/depsgraph_relation.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_relation.h b/source/blender/depsgraph/intern/depsgraph_relation.h
index 7154710e07e50966d3f0dcc7f1a0125cf450b103..4d51ad858787583218979b6a46354e63d72e1caa 100644
--- a/source/blender/depsgraph/intern/depsgraph_relation.h
+++ b/source/blender/depsgraph/intern/depsgraph_relation.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_tag.cc b/source/blender/depsgraph/intern/depsgraph_tag.cc
index b9ec01d729cd0940ef6345c2cad30609aa63a85b..b5968cbaeca2c56d2ed45cbc887a163e4c01f04a 100644
--- a/source/blender/depsgraph/intern/depsgraph_tag.cc
+++ b/source/blender/depsgraph/intern/depsgraph_tag.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_tag.h b/source/blender/depsgraph/intern/depsgraph_tag.h
index 6a0b1826cd92d5dac22e74a8a1be3a2094aa57fd..a0518420bfb3ca386969501aee523173cd8e5ed3 100644
--- a/source/blender/depsgraph/intern/depsgraph_tag.h
+++ b/source/blender/depsgraph/intern/depsgraph_tag.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_type.cc b/source/blender/depsgraph/intern/depsgraph_type.cc
index 0405a7d90b461c072b9d268fc62643e5faefb9b7..77d5419f99ef01229cc23d25f5b80bccdbb3effd 100644
--- a/source/blender/depsgraph/intern/depsgraph_type.cc
+++ b/source/blender/depsgraph/intern/depsgraph_type.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_type.h b/source/blender/depsgraph/intern/depsgraph_type.h
index 50f697323c400e84141cf9a4c9f0a55d6078f359..9cf14a831bc1e92dd63539ab9c438af05451d478 100644
--- a/source/blender/depsgraph/intern/depsgraph_type.h
+++ b/source/blender/depsgraph/intern/depsgraph_type.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_update.cc b/source/blender/depsgraph/intern/depsgraph_update.cc
index ec287edbd12af9d856e1bde8d83423a603204d7a..403386e7eb42f7006944c2e3d334d6d0d4a4a795 100644
--- a/source/blender/depsgraph/intern/depsgraph_update.cc
+++ b/source/blender/depsgraph/intern/depsgraph_update.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/depsgraph_update.h b/source/blender/depsgraph/intern/depsgraph_update.h
index 6f40a4366a52282f810740443b11e7a63aa028b9..18f8e6acab648c03aaf7abd05be2bc320c224a79 100644
--- a/source/blender/depsgraph/intern/depsgraph_update.h
+++ b/source/blender/depsgraph/intern/depsgraph_update.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval.cc b/source/blender/depsgraph/intern/eval/deg_eval.cc
index 30aeeee5b2cbcc4e28fb0c4681482e1ff94e2687..2d9d40aede671ce58c4f9cbfcb1056fb3e5c8adc 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval.h b/source/blender/depsgraph/intern/eval/deg_eval.h
index 7a23c0f8613a1c7456bc120fc8a71221249b448c..ba86e1a349de7a197d9f3f8dd5f395ce2a702e29 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.cc b/source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.cc
index 48166567354f24b53097ce7e7f9d55ced41485c2..646e4d6d6d64fff6ee283d9a6abb986d29fbc2ab 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.h b/source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.h
index 728f631f789ab256840e18f2ff6c886d955e9fbc..29322d582189b4fb4d50e4b75929851ca9f4e68a 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_flush.cc b/source/blender/depsgraph/intern/eval/deg_eval_flush.cc
index 7ec77689ba531aec991810ebee2dc262a900132d..de4e26aa4b54c896c1bc8264075c13e27162def7 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_flush.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_flush.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_flush.h b/source/blender/depsgraph/intern/eval/deg_eval_flush.h
index d70df62cb385301a51e8247bc5d561e44c20127c..6eb232e76e53838a9804c3c97a16d9f41e267f65 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_flush.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_flush.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup.cc
index 85ac8b509c2e0f7b9c79fe2d0ad8b53e46acc716..96ab93880235a865ca77e1f76c15868a7bbc0bed 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup.h b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup.h
index 5a215fbe1dbcbd57b1b4f9e4a659412ac21e6814..deb21715a28f42d3a0e8d451314600bed6e8edef 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_animation.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_animation.cc
index bd872d408252e995195001c12dda008586d9a816..f7fe968d12f452db6c88e7f65f24b7bb32391737 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_animation.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_animation.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_animation.h b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_animation.h
index 8f71457ae6fb788430877b23d692e3ffcaa7a1c9..92847b330e8888221cdf6e778f2983c961bce3b9 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_animation.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_animation.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_gpencil.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_gpencil.cc
index 63d1eb9f711067ff32fda01d56230b51187c7601..6986ef7d9eede8c13080af1f86899ea78a5dc9b2 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_gpencil.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_gpencil.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_gpencil.h b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_gpencil.h
index 1234f1df37b4303b9714e39abb72cf19f06de40e..68eff01fd6085b0566ce747bd85a82cfc4501c74 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_gpencil.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_gpencil.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_modifier.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_modifier.cc
index 0594b8a11b6f0189d6f71afbc47034f431b12468..2ec20909cfbf376a4f1113ff03d2382fc4b1a432 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_modifier.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_modifier.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_modifier.h b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_modifier.h
index f02dc73c392e2eef669eb81410a3b0cb1764f29d..faec8f7c0658963b74cf064f13b6e8f28ef5553b 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_modifier.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_modifier.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_movieclip.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_movieclip.cc
index 3ee0d018782d4c9edc81f686215dd9e7dd0bb171..112c576187b1cd68cf84ee4e72304e8efe6b9a9a 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_movieclip.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_movieclip.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_movieclip.h b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_movieclip.h
index 0b1de63369614623f7a8e1e7bafc37b0c8622e69..0e826e8f72a60534147d0191fc3a5111e12d791b 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_movieclip.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_movieclip.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_object.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_object.cc
index 10507948246cbac16e28d0c0aec55924a3105fd1..0992e242c7a0ab468b9fd28d14be5b441346eafb 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_object.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_object.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_object.h b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_object.h
index 5f6b443a2b25013ca535d53162f12951e285ebfe..3b138feec0bfd11daa4e2c8f71e25c0ee0e87b37 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_object.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_object.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_pose.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_pose.cc
index e99d18b442dd11177ba264a4ccf1923cfeb8afa6..a0d848a975b049f10fb07baff252d06044730c5d 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_pose.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_pose.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_pose.h b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_pose.h
index a6ce97529b7a32a5d1054d8f186b0dc67b0e1fa6..8fd5de44001a7d1574810ad97c1a9178d662a11a 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_pose.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_pose.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_scene.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_scene.cc
index 96a82c247782e01fd383fcfb2e526a8532b9fe76..c0ab129bd05a603e07f4b89d5ab26ff6b6290a3d 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_scene.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_scene.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_scene.h b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_scene.h
index d16f5b9b5ce40f1ccd6e1d4c6bdff600a31749e5..17683966a224b12e89f1c001988dd06d1ddf012b 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_scene.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_scene.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequence.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequence.cc
index d481e0c39a8b4a2b5d6f60d86bce39b98014770a..b5dfd777605be24fc6884b8fc5e3487221abc0a0 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequence.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequence.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequence.h b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequence.h
index 3b3aa496496a32e38cc7c8ab579a7af6427f5b96..95fbd2a3e4ef7035eb9536c687290770219eba6c 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequence.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequence.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequencer.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequencer.cc
index 166ca37bc3528bb270ebcc232df16fbb8b166026..3902543c1f8227258f5474a216a99dccd03e05c2 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequencer.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequencer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequencer.h b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequencer.h
index 4419238da329beff38f418efa6a8cc47a99a2206..19e1a63ab4c3ec2b1a33765a4719f66a2cdcd700 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequencer.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequencer.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sound.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sound.cc
index d05245a1c28db85c1b3c73ee35f0dbad04b99f11..7b896cfc005f59e1ac9f09649dfe6fe9c055eee8 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sound.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sound.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sound.h b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sound.h
index 754deb575564730f957ffc1c1293cf0db0ff7a55..c4267be1421e56ee32f12f65bc0518717a3dec59 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sound.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sound.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_volume.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_volume.cc
index 8fe0dd95bc25f1625fb6408eee08249aa7976159..4f36c90fc7c7dbef6d31bef1fc048c99d800dd09 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_volume.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_volume.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_volume.h b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_volume.h
index c0ef52046533f4534e030e1ef96edf6dd98e0fc4..bc263cc58f856dd6b3122061299a38ffc4316572 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_volume.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_volume.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_stats.cc b/source/blender/depsgraph/intern/eval/deg_eval_stats.cc
index fb627fa69c5db6b09400c5279889d798cf5ec06a..6478f70417507d0ac66c45e0e8ac094dc51f44b2 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_stats.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_stats.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_stats.h b/source/blender/depsgraph/intern/eval/deg_eval_stats.h
index 8f0d3b1b938e8627abbef80d13516bba01fe317f..a1e3cdaca76209ceb6df4cf7fa8c250345d75e86 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_stats.h
+++ b/source/blender/depsgraph/intern/eval/deg_eval_stats.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/node/deg_node.cc b/source/blender/depsgraph/intern/node/deg_node.cc
index 1eb76d76c22846d904afbc671f109864cb7e576b..7a515424e066653a8c29cc9fb11613afde901edd 100644
--- a/source/blender/depsgraph/intern/node/deg_node.cc
+++ b/source/blender/depsgraph/intern/node/deg_node.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/node/deg_node.h b/source/blender/depsgraph/intern/node/deg_node.h
index 72d3e375bcd61f2fb67324481050a68eb72bcce8..509867ad47a03f6facba6985ddd1d2e47b78d61d 100644
--- a/source/blender/depsgraph/intern/node/deg_node.h
+++ b/source/blender/depsgraph/intern/node/deg_node.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/node/deg_node_component.cc b/source/blender/depsgraph/intern/node/deg_node_component.cc
index e14f758c739618022f8dc084143caef8e25d5f49..cfcbec465694e97bc21cbf9487a7b94ad2113e31 100644
--- a/source/blender/depsgraph/intern/node/deg_node_component.cc
+++ b/source/blender/depsgraph/intern/node/deg_node_component.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/node/deg_node_component.h b/source/blender/depsgraph/intern/node/deg_node_component.h
index d45d464293767fb103c8ce935584f83c186f2305..6958866af3b29d931589f37c73e22f4e59e72a46 100644
--- a/source/blender/depsgraph/intern/node/deg_node_component.h
+++ b/source/blender/depsgraph/intern/node/deg_node_component.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/node/deg_node_factory.cc b/source/blender/depsgraph/intern/node/deg_node_factory.cc
index 209178f4b73bb27a6a03585ee9fef35129222eb8..bcdfdbec6048f558dfe3754827c251a05a8b80ee 100644
--- a/source/blender/depsgraph/intern/node/deg_node_factory.cc
+++ b/source/blender/depsgraph/intern/node/deg_node_factory.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/node/deg_node_factory.h b/source/blender/depsgraph/intern/node/deg_node_factory.h
index b3153a7ddfbfc43d6e4faa937aaa6d49670a2537..6caf99ac9ba71aac21c07b7030d2fc353ba03fbc 100644
--- a/source/blender/depsgraph/intern/node/deg_node_factory.h
+++ b/source/blender/depsgraph/intern/node/deg_node_factory.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/node/deg_node_factory_impl.h b/source/blender/depsgraph/intern/node/deg_node_factory_impl.h
index 0fc7e496ed9bb7e1964f352ef7e55d4741deba06..76a91860cc1363ec8b04a5784f42c07ddecce03e 100644
--- a/source/blender/depsgraph/intern/node/deg_node_factory_impl.h
+++ b/source/blender/depsgraph/intern/node/deg_node_factory_impl.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/node/deg_node_id.cc b/source/blender/depsgraph/intern/node/deg_node_id.cc
index baad8318de286bb96f37056db400f9056c8d23f2..99224501e98411f9cf908a28237130f4aad28f4e 100644
--- a/source/blender/depsgraph/intern/node/deg_node_id.cc
+++ b/source/blender/depsgraph/intern/node/deg_node_id.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/node/deg_node_id.h b/source/blender/depsgraph/intern/node/deg_node_id.h
index f18c44b6332d6cf22393cbdd1ccf81a4fcc1e834..a8b6294b4826465b2213366a85ff2096078d2165 100644
--- a/source/blender/depsgraph/intern/node/deg_node_id.h
+++ b/source/blender/depsgraph/intern/node/deg_node_id.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/node/deg_node_operation.cc b/source/blender/depsgraph/intern/node/deg_node_operation.cc
index 2d0d6854851ab895837729445837324f540bc089..c29aeefd9b202f0668ed713dcb1829690e9ba4bc 100644
--- a/source/blender/depsgraph/intern/node/deg_node_operation.cc
+++ b/source/blender/depsgraph/intern/node/deg_node_operation.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/node/deg_node_operation.h b/source/blender/depsgraph/intern/node/deg_node_operation.h
index 4abdc014946cb0653d875b60ae0ff0e12fa39321..d4916be1113452013351a1e02f289ad98ab5054d 100644
--- a/source/blender/depsgraph/intern/node/deg_node_operation.h
+++ b/source/blender/depsgraph/intern/node/deg_node_operation.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/node/deg_node_time.cc b/source/blender/depsgraph/intern/node/deg_node_time.cc
index 59ac4bd3d0834d45f2ac3e85fd2d5d2d7f6bdc1b..205385bb3e2adaa0fe30e3e21b537c58a47b3a11 100644
--- a/source/blender/depsgraph/intern/node/deg_node_time.cc
+++ b/source/blender/depsgraph/intern/node/deg_node_time.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/depsgraph/intern/node/deg_node_time.h b/source/blender/depsgraph/intern/node/deg_node_time.h
index 79ad92f336f7f6dcf77b350978876c1e988661a2..fcfe9a0fa80be68f2c861fadaf119c760ccb9de5 100644
--- a/source/blender/depsgraph/intern/node/deg_node_time.h
+++ b/source/blender/depsgraph/intern/node/deg_node_time.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup depsgraph
diff --git a/source/blender/draw/CMakeLists.txt b/source/blender/draw/CMakeLists.txt
index 17feb39a072da561c958829bca9e90ace7d8a11c..4103d9a708780c1fd33b8792d45bf76bdc1db91e 100644
--- a/source/blender/draw/CMakeLists.txt
+++ b/source/blender/draw/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2016, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2016 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/draw/DRW_engine.h b/source/blender/draw/DRW_engine.h
index 7e411fff72bc1218ef51fe9d0e44ea16d3b1bdaa..99d9a0d121faac72413c2836774ef782d9c410f7 100644
--- a/source/blender/draw/DRW_engine.h
+++ b/source/blender/draw/DRW_engine.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/DRW_select_buffer.h b/source/blender/draw/DRW_select_buffer.h
index 0d5c417457c7d0f5143b1d77e820c4f6c8c7b9c8..324ebebfbe69fc54bcdc3e0343a90f6a24ecf29d 100644
--- a/source/blender/draw/DRW_select_buffer.h
+++ b/source/blender/draw/DRW_select_buffer.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/engines/basic/basic_engine.c b/source/blender/draw/engines/basic/basic_engine.c
index 228281af2b080274ff6d92738a697701c25d327d..04a3c27959ddf87bbf93d8597822d35a3f734f51 100644
--- a/source/blender/draw/engines/basic/basic_engine.c
+++ b/source/blender/draw/engines/basic/basic_engine.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/basic/basic_engine.h b/source/blender/draw/engines/basic/basic_engine.h
index 8ace6f23cdc4ef5682c2c5c76a6a66dab72a53dd..6633da57bf09ac1a5f3d0a4f82a92ad95fe06008 100644
--- a/source/blender/draw/engines/basic/basic_engine.h
+++ b/source/blender/draw/engines/basic/basic_engine.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/basic/basic_private.h b/source/blender/draw/engines/basic/basic_private.h
index e5f494bf0e71549b2bac398f64a5f7c4682da914..22b458baca248401973cea3eec17f2e91c31d3f1 100644
--- a/source/blender/draw/engines/basic/basic_private.h
+++ b/source/blender/draw/engines/basic/basic_private.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/basic/basic_shader.c b/source/blender/draw/engines/basic/basic_shader.c
index 4b92406d5c0ba626d50e0320263faae4d0bef524..41d62afe525677f87c5d1fdd9ff99d2f7b1fe7bf 100644
--- a/source/blender/draw/engines/basic/basic_shader.c
+++ b/source/blender/draw/engines/basic/basic_shader.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_bloom.c b/source/blender/draw/engines/eevee/eevee_bloom.c
index cc6e75859c8e70ba8ef16e44760b4c4c66eb9081..d12ce7213f99a3703fb04c8a330cfb5f8e355be7 100644
--- a/source/blender/draw/engines/eevee/eevee_bloom.c
+++ b/source/blender/draw/engines/eevee/eevee_bloom.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_cryptomatte.c b/source/blender/draw/engines/eevee/eevee_cryptomatte.c
index 8f02e96b1684c0570d5f3c6faf28f5a5ee62aeee..50302eaa87aab6fec4703982ae15c879c9f319d8 100644
--- a/source/blender/draw/engines/eevee/eevee_cryptomatte.c
+++ b/source/blender/draw/engines/eevee/eevee_cryptomatte.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup EEVEE
diff --git a/source/blender/draw/engines/eevee/eevee_data.c b/source/blender/draw/engines/eevee/eevee_data.c
index 64553acd228e9c39b49f8c5c1ab4ef1efd6ab9ac..58676caa6f987289f25d16790ea178cf205c7c90 100644
--- a/source/blender/draw/engines/eevee/eevee_data.c
+++ b/source/blender/draw/engines/eevee/eevee_data.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_depth_of_field.c b/source/blender/draw/engines/eevee/eevee_depth_of_field.c
index d0c0635a1fb97e43eb577581b4bbe2cf0b32e05f..39cfbb40318ba44a8e2acd0a41f7409659f33c6d 100644
--- a/source/blender/draw/engines/eevee/eevee_depth_of_field.c
+++ b/source/blender/draw/engines/eevee/eevee_depth_of_field.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_effects.c b/source/blender/draw/engines/eevee/eevee_effects.c
index 3d32b4acd82f952d63fb28b789cd754fd63d95b0..78b9b68bb019e9e3b48fdd20188c869fd2559067 100644
--- a/source/blender/draw/engines/eevee/eevee_effects.c
+++ b/source/blender/draw/engines/eevee/eevee_effects.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_engine.c b/source/blender/draw/engines/eevee/eevee_engine.c
index 9b6b5c5f08d4b1a5145754673747ec91308d6530..6cd1a31085f9762442c72921fec5aca154279564 100644
--- a/source/blender/draw/engines/eevee/eevee_engine.c
+++ b/source/blender/draw/engines/eevee/eevee_engine.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_engine.h b/source/blender/draw/engines/eevee/eevee_engine.h
index 40784e2980b0618cf4e1383818e23ce5c9136b77..1de4fe53c9dc43cd1bd89f4ac4d5c5f00dfa5f3b 100644
--- a/source/blender/draw/engines/eevee/eevee_engine.h
+++ b/source/blender/draw/engines/eevee/eevee_engine.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/draw/engines/eevee/eevee_lightcache.c b/source/blender/draw/engines/eevee/eevee_lightcache.c
index bcbe17fdabc295ce1fab793bec651e6b5aaeb2ad..2e1b92de068c3fb4a443acca0ee6545c0aa3f0e9 100644
--- a/source/blender/draw/engines/eevee/eevee_lightcache.c
+++ b/source/blender/draw/engines/eevee/eevee_lightcache.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_lightcache.h b/source/blender/draw/engines/eevee/eevee_lightcache.h
index 240eecf9547debc07c68be32610097044c4bbfdf..4e94e1914a7610017bdc6810ef7821c93289d2a1 100644
--- a/source/blender/draw/engines/eevee/eevee_lightcache.h
+++ b/source/blender/draw/engines/eevee/eevee_lightcache.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2018, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup eevee
diff --git a/source/blender/draw/engines/eevee/eevee_lightprobes.c b/source/blender/draw/engines/eevee/eevee_lightprobes.c
index c7a8d2cc001d80633c7935977db4c410c7e1a1bb..a20fe156edaf80dfd904a59de48bff0446df7b63 100644
--- a/source/blender/draw/engines/eevee/eevee_lightprobes.c
+++ b/source/blender/draw/engines/eevee/eevee_lightprobes.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_lights.c b/source/blender/draw/engines/eevee/eevee_lights.c
index 4ed968e2935ba0317d299a61db2282042a787e55..312305a31f706e5782c2f4f34a12a922e253d6ae 100644
--- a/source/blender/draw/engines/eevee/eevee_lights.c
+++ b/source/blender/draw/engines/eevee/eevee_lights.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/draw/engines/eevee/eevee_lookdev.c b/source/blender/draw/engines/eevee/eevee_lookdev.c
index 879a7b08eba00751dbe03182f181fabbbd14696b..0ef78d97a79dbf0a050a87d3844d5f7f9f3e8235 100644
--- a/source/blender/draw/engines/eevee/eevee_lookdev.c
+++ b/source/blender/draw/engines/eevee/eevee_lookdev.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_lut.c b/source/blender/draw/engines/eevee/eevee_lut.c
index 27ce66ebec7efdfa0b6f03755667cc0ddd14c032..07cc2f0e8f278698fb7636f5fb2c32379bd698d2 100644
--- a/source/blender/draw/engines/eevee/eevee_lut.c
+++ b/source/blender/draw/engines/eevee/eevee_lut.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/draw/engines/eevee/eevee_lut.h b/source/blender/draw/engines/eevee/eevee_lut.h
index 8e107adfe0aaf57cdad0aab52b314b33fdb591bd..de9d0a109ea4955aeb6bab2b709c64b1dd0ff622 100644
--- a/source/blender/draw/engines/eevee/eevee_lut.h
+++ b/source/blender/draw/engines/eevee/eevee_lut.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/draw/engines/eevee/eevee_lut_gen.c b/source/blender/draw/engines/eevee/eevee_lut_gen.c
index 770134d27f9365e31713805e9769c726aa0f4f5b..9fab1a80c791f9e2a410068e47ae725a4bf0802f 100644
--- a/source/blender/draw/engines/eevee/eevee_lut_gen.c
+++ b/source/blender/draw/engines/eevee/eevee_lut_gen.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_materials.c b/source/blender/draw/engines/eevee/eevee_materials.c
index b8586ee0f6807428356d0fb17f65f6c3fc918e28..4b9ad693971f6515d01554e01ed3430bb97da8d6 100644
--- a/source/blender/draw/engines/eevee/eevee_materials.c
+++ b/source/blender/draw/engines/eevee/eevee_materials.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_mist.c b/source/blender/draw/engines/eevee/eevee_mist.c
index d4490d6fd4cce19e6744b6cc744b472b0b77ed8b..568682793cc8b8762605463e56c436678b80e99f 100644
--- a/source/blender/draw/engines/eevee/eevee_mist.c
+++ b/source/blender/draw/engines/eevee/eevee_mist.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_motion_blur.c b/source/blender/draw/engines/eevee/eevee_motion_blur.c
index 703518a32eca8253b7b2853c335bf299d5b9f44e..93ffa2be9f3ce2bbe2f59e5355f4ce755c3a63c1 100644
--- a/source/blender/draw/engines/eevee/eevee_motion_blur.c
+++ b/source/blender/draw/engines/eevee/eevee_motion_blur.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_occlusion.c b/source/blender/draw/engines/eevee/eevee_occlusion.c
index 1acd9950012af38fbb08d45d5141c7c95dbe2d9f..e148ac53cd44ab7929232d8eb0a6849c0a7abb94 100644
--- a/source/blender/draw/engines/eevee/eevee_occlusion.c
+++ b/source/blender/draw/engines/eevee/eevee_occlusion.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_private.h b/source/blender/draw/engines/eevee/eevee_private.h
index 883d2eff852d68ccba3acc4e54eceea27400e3fd..e8828cc74949cdd38e0237d7ab64ec9965bb03bb 100644
--- a/source/blender/draw/engines/eevee/eevee_private.h
+++ b/source/blender/draw/engines/eevee/eevee_private.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/draw/engines/eevee/eevee_render.c b/source/blender/draw/engines/eevee/eevee_render.c
index 2fd033b6745e1ccfb6808e4d9df1983b7683d5e4..e971edbaa442dc7c92276a84167854eef371c058 100644
--- a/source/blender/draw/engines/eevee/eevee_render.c
+++ b/source/blender/draw/engines/eevee/eevee_render.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_renderpasses.c b/source/blender/draw/engines/eevee/eevee_renderpasses.c
index 3ebfc8a8f0f3fe66f714edfeb13d4d733d10049d..3814cf44fd68cb65b059d314061b91b12d639437 100644
--- a/source/blender/draw/engines/eevee/eevee_renderpasses.c
+++ b/source/blender/draw/engines/eevee/eevee_renderpasses.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_sampling.c b/source/blender/draw/engines/eevee/eevee_sampling.c
index 99d14bd2c825bf537e65bf1482dcdd2ea40a98f4..a1a3e98f34f4aa51c0a49310daa198f25b450138 100644
--- a/source/blender/draw/engines/eevee/eevee_sampling.c
+++ b/source/blender/draw/engines/eevee/eevee_sampling.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup EEVEE
diff --git a/source/blender/draw/engines/eevee/eevee_screen_raytrace.c b/source/blender/draw/engines/eevee/eevee_screen_raytrace.c
index 0d6bd1f8024b92b77a7cb757dcddea5ff99f6556..5af794c915841fc21edf19e28569e601480e9334 100644
--- a/source/blender/draw/engines/eevee/eevee_screen_raytrace.c
+++ b/source/blender/draw/engines/eevee/eevee_screen_raytrace.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_shaders.c b/source/blender/draw/engines/eevee/eevee_shaders.c
index c4108969c99817c02192f4df6d40ccd8d8858079..ae5e6e94f7454aa7bf44f4f9f5abf4194f08723e 100644
--- a/source/blender/draw/engines/eevee/eevee_shaders.c
+++ b/source/blender/draw/engines/eevee/eevee_shaders.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_shadows.c b/source/blender/draw/engines/eevee/eevee_shadows.c
index d8a40fd13ccdd66a7c03248108e9dd94276f6544..b5e9a296c16848ad24bcb6b0c1ccd6f508269c27 100644
--- a/source/blender/draw/engines/eevee/eevee_shadows.c
+++ b/source/blender/draw/engines/eevee/eevee_shadows.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup EEVEE
diff --git a/source/blender/draw/engines/eevee/eevee_shadows_cascade.c b/source/blender/draw/engines/eevee/eevee_shadows_cascade.c
index 22ee821933cf36b3ec9357800c18701e2d9e3123..96b0df5b7dbbb8ca7373bbee13aae62707ce24f6 100644
--- a/source/blender/draw/engines/eevee/eevee_shadows_cascade.c
+++ b/source/blender/draw/engines/eevee/eevee_shadows_cascade.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup EEVEE
diff --git a/source/blender/draw/engines/eevee/eevee_shadows_cube.c b/source/blender/draw/engines/eevee/eevee_shadows_cube.c
index ed9f05df13c37f555cbb9909d34852d4c1f1203c..df9ee253317dda061bd1c73e9e99ef4c4c10cb4a 100644
--- a/source/blender/draw/engines/eevee/eevee_shadows_cube.c
+++ b/source/blender/draw/engines/eevee/eevee_shadows_cube.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup EEVEE
diff --git a/source/blender/draw/engines/eevee/eevee_subsurface.c b/source/blender/draw/engines/eevee/eevee_subsurface.c
index 81d9d5603207720330a2937d1153e378a0bf679f..1ae7bd3a3d52d442d06cb395e3a569d8494e547d 100644
--- a/source/blender/draw/engines/eevee/eevee_subsurface.c
+++ b/source/blender/draw/engines/eevee/eevee_subsurface.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_temporal_sampling.c b/source/blender/draw/engines/eevee/eevee_temporal_sampling.c
index 361fa2704c9884479908e44348a964c17e6bc3fd..5644fc6f1f40f9b9f1c01ba4e97ae37595e97fb5 100644
--- a/source/blender/draw/engines/eevee/eevee_temporal_sampling.c
+++ b/source/blender/draw/engines/eevee/eevee_temporal_sampling.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/eevee/eevee_volumes.c b/source/blender/draw/engines/eevee/eevee_volumes.c
index ac9abcca16b2b3c8cfcbdb2812b5f7d990fa6443..6ef58c90e7a470d7ae5364a34990cd5b0933460a 100644
--- a/source/blender/draw/engines/eevee/eevee_volumes.c
+++ b/source/blender/draw/engines/eevee/eevee_volumes.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/external/external_engine.c b/source/blender/draw/engines/external/external_engine.c
index 1d899c3935bcb39ff2c94e354aa645cf5f4bbe8e..994dfb7ad9bd2f764269bde7c0295e9bcfe7caf7 100644
--- a/source/blender/draw/engines/external/external_engine.c
+++ b/source/blender/draw/engines/external/external_engine.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2017, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/external/external_engine.h b/source/blender/draw/engines/external/external_engine.h
index 14ec4e2d3c53bfefbad6cc4a7e91a278d5b51892..d7d55a089df417e846c6a74eb547ef92b38144d0 100644
--- a/source/blender/draw/engines/external/external_engine.h
+++ b/source/blender/draw/engines/external/external_engine.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2017, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/gpencil/gpencil_antialiasing.c b/source/blender/draw/engines/gpencil/gpencil_antialiasing.c
index eaf010e81c93bcff7cb065ed6b031fef79bdeb35..f7094e020c01d15171c07d6af99597ffbc50a424 100644
--- a/source/blender/draw/engines/gpencil/gpencil_antialiasing.c
+++ b/source/blender/draw/engines/gpencil/gpencil_antialiasing.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/engines/gpencil/gpencil_cache_utils.c b/source/blender/draw/engines/gpencil/gpencil_cache_utils.c
index dbe0f27f8832ead165b3a4fd85f84ccfcbd4a92d..eec38f9878876424386599c7c52d2affadab5c92 100644
--- a/source/blender/draw/engines/gpencil/gpencil_cache_utils.c
+++ b/source/blender/draw/engines/gpencil/gpencil_cache_utils.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2017, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/engines/gpencil/gpencil_draw_data.c b/source/blender/draw/engines/gpencil/gpencil_draw_data.c
index 5a79dfc2663ccbde1088d998ac155d13f8eed137..6c904745709c218d5dd701ccc97aec8e4fc8c3a1 100644
--- a/source/blender/draw/engines/gpencil/gpencil_draw_data.c
+++ b/source/blender/draw/engines/gpencil/gpencil_draw_data.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/gpencil/gpencil_engine.c b/source/blender/draw/engines/gpencil/gpencil_engine.c
index dfa0d35048503032d4969b3dda9118dd72de063a..b7bba35e29844eed342d6f91f29658941892f2b6 100644
--- a/source/blender/draw/engines/gpencil/gpencil_engine.c
+++ b/source/blender/draw/engines/gpencil/gpencil_engine.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2017, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/engines/gpencil/gpencil_engine.h b/source/blender/draw/engines/gpencil/gpencil_engine.h
index bf5dbac9f6897ad6230809961b7c1c006ba62d32..9ef558c7a7523f85eb7e0430d1dcc4632ba6bf29 100644
--- a/source/blender/draw/engines/gpencil/gpencil_engine.h
+++ b/source/blender/draw/engines/gpencil/gpencil_engine.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2017, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/engines/gpencil/gpencil_render.c b/source/blender/draw/engines/gpencil/gpencil_render.c
index 26a14c433b347dade8782926d15ef49d3bc1c801..9c3779c18ad4aba2fb0ba567b4b1c4f2f83ec3a1 100644
--- a/source/blender/draw/engines/gpencil/gpencil_render.c
+++ b/source/blender/draw/engines/gpencil/gpencil_render.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2017, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/engines/gpencil/gpencil_shader.c b/source/blender/draw/engines/gpencil/gpencil_shader.c
index 6284e0a648c02b23123be76be047e7a13b90298d..d61bbe146d41c324eae7c42217354a7591735918 100644
--- a/source/blender/draw/engines/gpencil/gpencil_shader.c
+++ b/source/blender/draw/engines/gpencil/gpencil_shader.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/engines/gpencil/gpencil_shader_fx.c b/source/blender/draw/engines/gpencil/gpencil_shader_fx.c
index dfff45cbca5fbf4a50f0271b942e1f92dc24155f..7eb3569219db8edafc2ffb457b391b58e31b86b5 100644
--- a/source/blender/draw/engines/gpencil/gpencil_shader_fx.c
+++ b/source/blender/draw/engines/gpencil/gpencil_shader_fx.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2017, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/engines/image/image_batches.hh b/source/blender/draw/engines/image/image_batches.hh
index 5f82504197a1dbbeba727c6d4375de19422233f1..356e3f0db6bfb26a0840a5e11355366e72bd6457 100644
--- a/source/blender/draw/engines/image/image_batches.hh
+++ b/source/blender/draw/engines/image/image_batches.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/image/image_drawing_mode.hh b/source/blender/draw/engines/image/image_drawing_mode.hh
index 52d57ea2ba57cd2ff0506fcb0f1c3ea71fd3cc44..61b7993c6b035c55799d8d038515d12d2dbda753 100644
--- a/source/blender/draw/engines/image/image_drawing_mode.hh
+++ b/source/blender/draw/engines/image/image_drawing_mode.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/image/image_engine.cc b/source/blender/draw/engines/image/image_engine.cc
index 201733f41a7f07359d996c4289fe591b7f305ec5..180e9601cbd2231a9cf6118c470002d7d16240af 100644
--- a/source/blender/draw/engines/image/image_engine.cc
+++ b/source/blender/draw/engines/image/image_engine.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/image/image_engine.h b/source/blender/draw/engines/image/image_engine.h
index f7e2f53d41b43b57c36d6ef002dd4c9d0571ff6c..146e98a7bde246888272e5a102db81e851987823 100644
--- a/source/blender/draw/engines/image/image_engine.h
+++ b/source/blender/draw/engines/image/image_engine.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/image/image_instance_data.hh b/source/blender/draw/engines/image/image_instance_data.hh
index 1a7a20b8b9add821cd9530ed6cbc4a8672d6edb3..7349164062f8d8563f04a3539be5a2614d2eedc7 100644
--- a/source/blender/draw/engines/image/image_instance_data.hh
+++ b/source/blender/draw/engines/image/image_instance_data.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/image/image_partial_updater.hh b/source/blender/draw/engines/image/image_partial_updater.hh
index e74c31e9e8a9589e2bb2c44cba4a8af84bab6750..a6020a90c291cb145dd088e802712affa0e86b91 100644
--- a/source/blender/draw/engines/image/image_partial_updater.hh
+++ b/source/blender/draw/engines/image/image_partial_updater.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/image/image_private.hh b/source/blender/draw/engines/image/image_private.hh
index d8f8adb7e84c68462cdc3e9b1bc2b8daca6763cb..a786bd24ffa364a5819fd0eebbf626b6f9f344a0 100644
--- a/source/blender/draw/engines/image/image_private.hh
+++ b/source/blender/draw/engines/image/image_private.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/image/image_shader.cc b/source/blender/draw/engines/image/image_shader.cc
index 952843d7dd79f587d365971ea5e1f72100f32295..b1d1f0c2882105fe94b4c6b10e14d336bd09e7e8 100644
--- a/source/blender/draw/engines/image/image_shader.cc
+++ b/source/blender/draw/engines/image/image_shader.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/image/image_shader_params.hh b/source/blender/draw/engines/image/image_shader_params.hh
index 9f3da3f9e9e924bc14588d638fe28f229eb7d005..4bc121a49a40b8e0ba2723b6eef42ca83f2a1bd4 100644
--- a/source/blender/draw/engines/image/image_shader_params.hh
+++ b/source/blender/draw/engines/image/image_shader_params.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/image/image_space.hh b/source/blender/draw/engines/image/image_space.hh
index fbb92ce24aa64bbbc62eb41cb09b088d496c8b69..7a11d14b5670f226f9f3755ab6df7e31aee24c0f 100644
--- a/source/blender/draw/engines/image/image_space.hh
+++ b/source/blender/draw/engines/image/image_space.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/image/image_space_image.hh b/source/blender/draw/engines/image/image_space_image.hh
index 090481a351df42d649975875a49d56f064bd3773..40aa117514c77695b48cad0351ede1d46028352f 100644
--- a/source/blender/draw/engines/image/image_space_image.hh
+++ b/source/blender/draw/engines/image/image_space_image.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/image/image_space_node.hh b/source/blender/draw/engines/image/image_space_node.hh
index 15eef8f6499e0aa48ea5b6c1bb1a2df23b2fd741..6f38dcb86aaf53dde2b5cd4215fe9b8313f67774 100644
--- a/source/blender/draw/engines/image/image_space_node.hh
+++ b/source/blender/draw/engines/image/image_space_node.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/image/image_texture_info.hh b/source/blender/draw/engines/image/image_texture_info.hh
index 8c3b7494831442d861a2ccb6982fbe79b6ab40de..ce605b0b6af2ba85e7c228939a8479b0c760d983 100644
--- a/source/blender/draw/engines/image/image_texture_info.hh
+++ b/source/blender/draw/engines/image/image_texture_info.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2022, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/image/image_wrappers.hh b/source/blender/draw/engines/image/image_wrappers.hh
index 63dbbde12effe3d60ffb0b4c97c5ea9938e55e2b..323d3ce66a18a0644799ba4c30d57b67b963ac51 100644
--- a/source/blender/draw/engines/image/image_wrappers.hh
+++ b/source/blender/draw/engines/image/image_wrappers.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2022, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_antialiasing.c b/source/blender/draw/engines/overlay/overlay_antialiasing.c
index b263254696c2c4c402d08e95043bb5796d7f048c..a07fd559f4f22577805372fb2680f69f4387cfc8 100644
--- a/source/blender/draw/engines/overlay/overlay_antialiasing.c
+++ b/source/blender/draw/engines/overlay/overlay_antialiasing.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_armature.c b/source/blender/draw/engines/overlay/overlay_armature.c
index f9694b329aaeb618547d37f91248f9f118bc6a5f..10d48a871d3d5b35fe431222344bf60986edc2a5 100644
--- a/source/blender/draw/engines/overlay/overlay_armature.c
+++ b/source/blender/draw/engines/overlay/overlay_armature.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_background.c b/source/blender/draw/engines/overlay/overlay_background.c
index 843051c646cadded313d6da3e3407ea971f87ae8..74fed530ed700b84a9653c6d8cc290ed76e8bae8 100644
--- a/source/blender/draw/engines/overlay/overlay_background.c
+++ b/source/blender/draw/engines/overlay/overlay_background.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_edit_curve.c b/source/blender/draw/engines/overlay/overlay_edit_curve.c
index 6d907646817dce24e5992af6868da53f98ba7343..09e3c3410c306231cb6cdf6a666d7be62a7ea7ef 100644
--- a/source/blender/draw/engines/overlay/overlay_edit_curve.c
+++ b/source/blender/draw/engines/overlay/overlay_edit_curve.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_edit_mesh.c b/source/blender/draw/engines/overlay/overlay_edit_mesh.c
index ad929cc0835150319c5e537e63e32ac53755004e..e605a3be375e255b4a062c4972705ef253748a79 100644
--- a/source/blender/draw/engines/overlay/overlay_edit_mesh.c
+++ b/source/blender/draw/engines/overlay/overlay_edit_mesh.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_edit_text.c b/source/blender/draw/engines/overlay/overlay_edit_text.c
index b899767acc42a66e821676230877800c00e3037b..40c905c6db94d45f7df464815919b9c36381d5f8 100644
--- a/source/blender/draw/engines/overlay/overlay_edit_text.c
+++ b/source/blender/draw/engines/overlay/overlay_edit_text.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_edit_uv.c b/source/blender/draw/engines/overlay/overlay_edit_uv.c
index f51df908fbf498b9031ba29d304f265dbbfb9537..8f566970337d2b04ce736b846d21967de1abe1aa 100644
--- a/source/blender/draw/engines/overlay/overlay_edit_uv.c
+++ b/source/blender/draw/engines/overlay/overlay_edit_uv.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_engine.c b/source/blender/draw/engines/overlay/overlay_engine.c
index 54e8ef80854735fa58a0a5bccda3e88b1203768b..b41d9ce69efc6d960baafc6fdee7a55c64692b36 100644
--- a/source/blender/draw/engines/overlay/overlay_engine.c
+++ b/source/blender/draw/engines/overlay/overlay_engine.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_engine.h b/source/blender/draw/engines/overlay/overlay_engine.h
index f9f6ee0511cdff060cabeb4bab882d32523e7b7b..18ab7f1456e981bc8545d26bed15d5de41c98c42 100644
--- a/source/blender/draw/engines/overlay/overlay_engine.h
+++ b/source/blender/draw/engines/overlay/overlay_engine.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_extra.c b/source/blender/draw/engines/overlay/overlay_extra.c
index de0003625a266160b165b7ddcac4754b40210c04..e370873c234b81c5c017b1a38a037033df9af3e0 100644
--- a/source/blender/draw/engines/overlay/overlay_extra.c
+++ b/source/blender/draw/engines/overlay/overlay_extra.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_facing.c b/source/blender/draw/engines/overlay/overlay_facing.c
index cfeaf8e1927fdb84cd7f4cbce8be7cf8c6ab6017..bf06600eb33ce0f59889d3fda5ef0868e408120c 100644
--- a/source/blender/draw/engines/overlay/overlay_facing.c
+++ b/source/blender/draw/engines/overlay/overlay_facing.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_fade.c b/source/blender/draw/engines/overlay/overlay_fade.c
index 557a8976ff788fd3aac44eee6d7046111cce355b..056e02a04e102918d43ce1a6f4f8bc271b1389ea 100644
--- a/source/blender/draw/engines/overlay/overlay_fade.c
+++ b/source/blender/draw/engines/overlay/overlay_fade.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_gpencil.c b/source/blender/draw/engines/overlay/overlay_gpencil.c
index 5c03d70d7beec533d663a7ba873d9328a71df2bf..79d0e62c25cf1eff8e90b45a7bc22c3d2d9cbdea 100644
--- a/source/blender/draw/engines/overlay/overlay_gpencil.c
+++ b/source/blender/draw/engines/overlay/overlay_gpencil.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_grid.c b/source/blender/draw/engines/overlay/overlay_grid.c
index 4a551c4dec5e361f7e5016f868a688052ce869bd..475af24d004368a98bae4a31cbb0656d12c86b9a 100644
--- a/source/blender/draw/engines/overlay/overlay_grid.c
+++ b/source/blender/draw/engines/overlay/overlay_grid.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_image.c b/source/blender/draw/engines/overlay/overlay_image.c
index 0608725d3425efea17eaaeae36737e64bda5aa46..3e9c05bb59fcdfb1fd3aba1114a65fb227fb1687 100644
--- a/source/blender/draw/engines/overlay/overlay_image.c
+++ b/source/blender/draw/engines/overlay/overlay_image.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_lattice.c b/source/blender/draw/engines/overlay/overlay_lattice.c
index 84d9dcc3e94a4ebfe3cc414fd14c489d5a5fa3cb..2035a9a9d3b59d696aada1309ad138d4e3163160 100644
--- a/source/blender/draw/engines/overlay/overlay_lattice.c
+++ b/source/blender/draw/engines/overlay/overlay_lattice.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_metaball.c b/source/blender/draw/engines/overlay/overlay_metaball.c
index 46076a7c88bb653621bf5918702433408e393c16..b747000abc4c1d59df503ea2877a9ff382caa527 100644
--- a/source/blender/draw/engines/overlay/overlay_metaball.c
+++ b/source/blender/draw/engines/overlay/overlay_metaball.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_mode_transfer.c b/source/blender/draw/engines/overlay/overlay_mode_transfer.c
index 253f606b086f2ad477f2efa5ae8a2ddedcfda67e..e7b2008dee08280c74c65f02eaca8a6b62645122 100644
--- a/source/blender/draw/engines/overlay/overlay_mode_transfer.c
+++ b/source/blender/draw/engines/overlay/overlay_mode_transfer.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_motion_path.c b/source/blender/draw/engines/overlay/overlay_motion_path.c
index 1b7611e9620cd880d4c249bd7a57f7a84d8621bf..58825923f373edc93eaaedacbd252353083cd182 100644
--- a/source/blender/draw/engines/overlay/overlay_motion_path.c
+++ b/source/blender/draw/engines/overlay/overlay_motion_path.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_outline.c b/source/blender/draw/engines/overlay/overlay_outline.c
index 03d70a37519e504fc8eee18d77799180a11d129f..cb94008f53f93f51e12aa5dfbdeb8d15c6776625 100644
--- a/source/blender/draw/engines/overlay/overlay_outline.c
+++ b/source/blender/draw/engines/overlay/overlay_outline.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_paint.c b/source/blender/draw/engines/overlay/overlay_paint.c
index 91a25fe16d5f21442977c7a18f1b90dd811b98ce..c730c702a8da7d813c8365f3a51d90667cab58c4 100644
--- a/source/blender/draw/engines/overlay/overlay_paint.c
+++ b/source/blender/draw/engines/overlay/overlay_paint.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_particle.c b/source/blender/draw/engines/overlay/overlay_particle.c
index e51f703228885cb9a9ad02ae37513aa1c7a2d433..b985bfb24bfc835bb2544f14459b3371dfa567bf 100644
--- a/source/blender/draw/engines/overlay/overlay_particle.c
+++ b/source/blender/draw/engines/overlay/overlay_particle.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_private.h b/source/blender/draw/engines/overlay/overlay_private.h
index c8891a5321356cc012bb6eb44483fdba98a56db2..3cc70527659291c2356864531473a429870c226d 100644
--- a/source/blender/draw/engines/overlay/overlay_private.h
+++ b/source/blender/draw/engines/overlay/overlay_private.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/draw/engines/overlay/overlay_sculpt.c b/source/blender/draw/engines/overlay/overlay_sculpt.c
index 24c52ec427d707034a617bb38abf3a7b2b6283d9..4a6477b3f6c68193417759fd5ea113f58203b7cf 100644
--- a/source/blender/draw/engines/overlay/overlay_sculpt.c
+++ b/source/blender/draw/engines/overlay/overlay_sculpt.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_shader.c b/source/blender/draw/engines/overlay/overlay_shader.c
index 4c09349c35d64326b17520afe877f151d4d8a52f..da2c2cff2f69bc0e9dc067f399f8d1013123f4bf 100644
--- a/source/blender/draw/engines/overlay/overlay_shader.c
+++ b/source/blender/draw/engines/overlay/overlay_shader.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_volume.c b/source/blender/draw/engines/overlay/overlay_volume.c
index b13351984a3d07570ac99e344c9168a95d42b73d..ee0d80734abb09724fb3c973ff7417c6729010c3 100644
--- a/source/blender/draw/engines/overlay/overlay_volume.c
+++ b/source/blender/draw/engines/overlay/overlay_volume.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/overlay/overlay_wireframe.c b/source/blender/draw/engines/overlay/overlay_wireframe.c
index 1eb8fc981cfc552dd272467fceb84756be885669..24eceb304415e0eb4ee7b358ba6413851f60debd 100644
--- a/source/blender/draw/engines/overlay/overlay_wireframe.c
+++ b/source/blender/draw/engines/overlay/overlay_wireframe.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/select/select_debug_engine.c b/source/blender/draw/engines/select/select_debug_engine.c
index f66eabdcdcc6891a8bed16333694a086dbd5e93c..c46f61371494db09430a7f9bb10430ef109382fd 100644
--- a/source/blender/draw/engines/select/select_debug_engine.c
+++ b/source/blender/draw/engines/select/select_debug_engine.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/select/select_draw_utils.c b/source/blender/draw/engines/select/select_draw_utils.c
index 2801f2d7720432a5103b0d1667ed6251593a59f9..82812ef98a5ad1893c86539e63cf5dc574172801 100644
--- a/source/blender/draw/engines/select/select_draw_utils.c
+++ b/source/blender/draw/engines/select/select_draw_utils.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/select/select_engine.c b/source/blender/draw/engines/select/select_engine.c
index 7f9645013cef9549546ab8313dc6c55ac1cdd4cd..60d9f8e19518b2c4b4fb689176f1b739e8bda1be 100644
--- a/source/blender/draw/engines/select/select_engine.c
+++ b/source/blender/draw/engines/select/select_engine.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/select/select_engine.h b/source/blender/draw/engines/select/select_engine.h
index d6192103178b45be9ae1e97ec7db9ca64c881cc9..df4be19c0d335f435a532031b6ee26eeb01c8c26 100644
--- a/source/blender/draw/engines/select/select_engine.h
+++ b/source/blender/draw/engines/select/select_engine.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/select/select_private.h b/source/blender/draw/engines/select/select_private.h
index 27525053cc184f520f03bfa6841c659ea2d2baad..4af1db25c40b7d791f8759f6ae060e06ecf9c3d7 100644
--- a/source/blender/draw/engines/select/select_private.h
+++ b/source/blender/draw/engines/select/select_private.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_data.c b/source/blender/draw/engines/workbench/workbench_data.c
index b84ddec4973e82fb55c18820e2fa4f2e4a249ff8..bf19798668761a04af90752a136cc32d48c072a9 100644
--- a/source/blender/draw/engines/workbench/workbench_data.c
+++ b/source/blender/draw/engines/workbench/workbench_data.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2018, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_effect_antialiasing.c b/source/blender/draw/engines/workbench/workbench_effect_antialiasing.c
index f4014fac41f9de0d2958faf510334404b7e3fe56..3b8642d37d290c631c2872fc2384022ceca7d2ec 100644
--- a/source/blender/draw/engines/workbench/workbench_effect_antialiasing.c
+++ b/source/blender/draw/engines/workbench/workbench_effect_antialiasing.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_effect_cavity.c b/source/blender/draw/engines/workbench/workbench_effect_cavity.c
index e58c88c5dccd39f2e6eb662f24723c2fbfc252cf..1e80f7212982cca7a99e5d5fe62526aebb75040a 100644
--- a/source/blender/draw/engines/workbench/workbench_effect_cavity.c
+++ b/source/blender/draw/engines/workbench/workbench_effect_cavity.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_effect_dof.c b/source/blender/draw/engines/workbench/workbench_effect_dof.c
index b5f43251a43ca9b6fea499c9b19ef62b483049e9..6b64a9d7f0956fc91dafd9b8465d7798c610a98e 100644
--- a/source/blender/draw/engines/workbench/workbench_effect_dof.c
+++ b/source/blender/draw/engines/workbench/workbench_effect_dof.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_effect_outline.c b/source/blender/draw/engines/workbench/workbench_effect_outline.c
index 4f716c5a7bc7497e21e2a117cbd3fa884bcbd265..1e59e06bf3855ec498a425ca886cc8e258292995 100644
--- a/source/blender/draw/engines/workbench/workbench_effect_outline.c
+++ b/source/blender/draw/engines/workbench/workbench_effect_outline.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_engine.c b/source/blender/draw/engines/workbench/workbench_engine.c
index 8773c78e82f612cf118a406347e5bf97fcbef9a6..f97db2fcda929a56cabce1bc78f7e2d936d26c8b 100644
--- a/source/blender/draw/engines/workbench/workbench_engine.c
+++ b/source/blender/draw/engines/workbench/workbench_engine.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_engine.h b/source/blender/draw/engines/workbench/workbench_engine.h
index 8fd427c2683417b8755d636335bbebee7c7af25a..6f6f21438689c2f98051bf329063d4b382744fad 100644
--- a/source/blender/draw/engines/workbench/workbench_engine.h
+++ b/source/blender/draw/engines/workbench/workbench_engine.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_materials.c b/source/blender/draw/engines/workbench/workbench_materials.c
index 1b12e29617c537af3e4df0a8b93924707ec99b3d..4744c0db6ce9dba59be6c8e4b3acb41f227b1020 100644
--- a/source/blender/draw/engines/workbench/workbench_materials.c
+++ b/source/blender/draw/engines/workbench/workbench_materials.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2018, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_opaque.c b/source/blender/draw/engines/workbench/workbench_opaque.c
index e4534d923ab7c13bc4b2a45fe0ec58852e384d97..5e12d6a736cc331934c763a849795bb41f1149d3 100644
--- a/source/blender/draw/engines/workbench/workbench_opaque.c
+++ b/source/blender/draw/engines/workbench/workbench_opaque.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_private.h b/source/blender/draw/engines/workbench/workbench_private.h
index 2cf96a8e1395c39abbc9cd1d46dfcad95abcf3a9..2e310b7f98de971934019c9750bf2e2f5be813f1 100644
--- a/source/blender/draw/engines/workbench/workbench_private.h
+++ b/source/blender/draw/engines/workbench/workbench_private.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_render.c b/source/blender/draw/engines/workbench/workbench_render.c
index 125bee876149ae309dd234e000b4cab1d586bf4b..72de3fe298a3dc0af5d96261bd835e5f0e3aa312 100644
--- a/source/blender/draw/engines/workbench/workbench_render.c
+++ b/source/blender/draw/engines/workbench/workbench_render.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_shader.cc b/source/blender/draw/engines/workbench/workbench_shader.cc
index bbc0bc02b03f727376a1fb92cabb5d0a1041752e..9501e653d3b200700af8815bb373530b558279b1 100644
--- a/source/blender/draw/engines/workbench/workbench_shader.cc
+++ b/source/blender/draw/engines/workbench/workbench_shader.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_shadow.c b/source/blender/draw/engines/workbench/workbench_shadow.c
index 3386d9b639066247ffdc488c944ea664a9ae01af..432e571d74ba025ce279516ae0d55ef6582b5c8a 100644
--- a/source/blender/draw/engines/workbench/workbench_shadow.c
+++ b/source/blender/draw/engines/workbench/workbench_shadow.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_transparent.c b/source/blender/draw/engines/workbench/workbench_transparent.c
index 2f9b85acf3114e0308cced05c658c30d64e97bdf..ffbe7acf6a0582c093375aec19277a8bdc727e15 100644
--- a/source/blender/draw/engines/workbench/workbench_transparent.c
+++ b/source/blender/draw/engines/workbench/workbench_transparent.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/engines/workbench/workbench_volume.c b/source/blender/draw/engines/workbench/workbench_volume.c
index 9632060d69c2aef46d0452f72c036aca9479e8f5..c6f40c5d6bb55c8a49edd50b6121547bcc0760ba 100644
--- a/source/blender/draw/engines/workbench/workbench_volume.c
+++ b/source/blender/draw/engines/workbench/workbench_volume.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2018, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/intern/DRW_gpu_wrapper.hh b/source/blender/draw/intern/DRW_gpu_wrapper.hh
index d4491223c10c6b4fd2f64e4765a99f1e42b21771..f387d5371b59cac497c670f77cf314905d5aba2d 100644
--- a/source/blender/draw/intern/DRW_gpu_wrapper.hh
+++ b/source/blender/draw/intern/DRW_gpu_wrapper.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2022, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/draw/intern/DRW_render.h b/source/blender/draw/intern/DRW_render.h
index d531d8ad9f8ce2f3f0d5fb247a3c1a93fe7f6327..37c1365a5f250ea5e2cfc5b26ab75636748f9779 100644
--- a/source/blender/draw/intern/DRW_render.h
+++ b/source/blender/draw/intern/DRW_render.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache.c b/source/blender/draw/intern/draw_cache.c
index 430b28f1224683f9bd8a1f9ea95d177178c79b50..ce8d31364327e3b1b7b7777f33f5d468f01d496a 100644
--- a/source/blender/draw/intern/draw_cache.c
+++ b/source/blender/draw/intern/draw_cache.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache.h b/source/blender/draw/intern/draw_cache.h
index b94dd466364648b4bf8f3efffdc5c8bba8b131fa..56342440bf3f9d7dd0514e0ba9e74d6e1382d57a 100644
--- a/source/blender/draw/intern/draw_cache.h
+++ b/source/blender/draw/intern/draw_cache.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_extract.h b/source/blender/draw/intern/draw_cache_extract.h
index e7f66ebacd0533b64652e231be4b6c58f34f1037..8f2e8ebdf0110b316be67ba41f53674f3ecbfc1c 100644
--- a/source/blender/draw/intern/draw_cache_extract.h
+++ b/source/blender/draw/intern/draw_cache_extract.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_extract_mesh.cc b/source/blender/draw/intern/draw_cache_extract_mesh.cc
index 987ddf3a938f1b10c915d18f3903a37c214f1216..09d6c06f7df0f1a1f66f42d5e5338ee1b1a2875c 100644
--- a/source/blender/draw/intern/draw_cache_extract_mesh.cc
+++ b/source/blender/draw/intern/draw_cache_extract_mesh.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_extract_mesh_render_data.c b/source/blender/draw/intern/draw_cache_extract_mesh_render_data.c
index a47a124bd24f0bdbdf4d9c7bd95e4d7c3b5ed250..a2995d6cd3f1ef7f2263bdf3c87e6996a70f7958 100644
--- a/source/blender/draw/intern/draw_cache_extract_mesh_render_data.c
+++ b/source/blender/draw/intern/draw_cache_extract_mesh_render_data.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_impl.h b/source/blender/draw/intern/draw_cache_impl.h
index 9c6814d910ebc54c223f519c7a2a5f2ee86a7ade..d262d1a5d4df17b650b6e8ad160855b00bebb90a 100644
--- a/source/blender/draw/intern/draw_cache_impl.h
+++ b/source/blender/draw/intern/draw_cache_impl.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_impl_curve.cc b/source/blender/draw/intern/draw_cache_impl_curve.cc
index 33cf0e9a3cdb96db87b79dc0958bfdad104afb7a..abba3beb893fe4a6db2333de348a7b2b90c0dd5a 100644
--- a/source/blender/draw/intern/draw_cache_impl_curve.cc
+++ b/source/blender/draw/intern/draw_cache_impl_curve.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_impl_curves.cc b/source/blender/draw/intern/draw_cache_impl_curves.cc
index 8ec97495fcf4870c813720fb9eb9f954b3505d39..a779c694cd248e85b4d5dc6a85cdcb5782dc46b4 100644
--- a/source/blender/draw/intern/draw_cache_impl_curves.cc
+++ b/source/blender/draw/intern/draw_cache_impl_curves.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_impl_displist.c b/source/blender/draw/intern/draw_cache_impl_displist.c
index fb8f998f03634fc1efe60a6050f0333b5d3e4aa5..ee3d16b2830ebd6eb837a4897a7f5ad042053898 100644
--- a/source/blender/draw/intern/draw_cache_impl_displist.c
+++ b/source/blender/draw/intern/draw_cache_impl_displist.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_impl_gpencil.c b/source/blender/draw/intern/draw_cache_impl_gpencil.c
index ddad07a747628024b9f9164d85b5178b7ccf4ea8..08c33555b71a2db77a8dbd3a6b9aeb88a30f909c 100644
--- a/source/blender/draw/intern/draw_cache_impl_gpencil.c
+++ b/source/blender/draw/intern/draw_cache_impl_gpencil.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_impl_lattice.c b/source/blender/draw/intern/draw_cache_impl_lattice.c
index 0a1c7d9581a83ca648ab728a6101cf42115f5309..cb621c6ceb9557a13faaff59b68576d83e919ff3 100644
--- a/source/blender/draw/intern/draw_cache_impl_lattice.c
+++ b/source/blender/draw/intern/draw_cache_impl_lattice.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_impl_mesh.c b/source/blender/draw/intern/draw_cache_impl_mesh.c
index e7e0e97499f19a6f304a7a941fc23cac12608856..2d78a3f2b6fce7b47cc303b69bd7fac17987a941 100644
--- a/source/blender/draw/intern/draw_cache_impl_mesh.c
+++ b/source/blender/draw/intern/draw_cache_impl_mesh.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_impl_metaball.c b/source/blender/draw/intern/draw_cache_impl_metaball.c
index 63bffed0eaff8ff2bccc78f32866a94c8d89815f..1408dc91069f834dc23a542cab35c2d76400f790 100644
--- a/source/blender/draw/intern/draw_cache_impl_metaball.c
+++ b/source/blender/draw/intern/draw_cache_impl_metaball.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_impl_particles.c b/source/blender/draw/intern/draw_cache_impl_particles.c
index 9493a6debeb63f5a4eebd6035cb2d4ac0a0f2660..c6b56723818fe43244745a3c8426109bfe1f64df 100644
--- a/source/blender/draw/intern/draw_cache_impl_particles.c
+++ b/source/blender/draw/intern/draw_cache_impl_particles.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_impl_pointcloud.c b/source/blender/draw/intern/draw_cache_impl_pointcloud.c
index 74020a228e752583c8b2cc2c6c9137ab32a3aeac..d715899e29177a5f2fd7a49b125528ea1e87bfbe 100644
--- a/source/blender/draw/intern/draw_cache_impl_pointcloud.c
+++ b/source/blender/draw/intern/draw_cache_impl_pointcloud.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_impl_subdivision.cc b/source/blender/draw/intern/draw_cache_impl_subdivision.cc
index 56184f20f7b6ee51903ea74531620796f6c3c377..f79b2fb8c1b9858f0701ac2e2a4c1900043f4bcb 100644
--- a/source/blender/draw/intern/draw_cache_impl_subdivision.cc
+++ b/source/blender/draw/intern/draw_cache_impl_subdivision.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #include "draw_subdivision.h"
 
diff --git a/source/blender/draw/intern/draw_cache_impl_volume.c b/source/blender/draw/intern/draw_cache_impl_volume.c
index cba063ed5ef821856e50e0caad849b39e1f7de76..18a4c81514b7490dc9300ef7f3ef7bcd16027af3 100644
--- a/source/blender/draw/intern/draw_cache_impl_volume.c
+++ b/source/blender/draw/intern/draw_cache_impl_volume.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_cache_inline.h b/source/blender/draw/intern/draw_cache_inline.h
index 5e349d43538eb8b6308d70f39f7857235a703dc4..68260b1d05744c975bafb478ebf571709b044f62 100644
--- a/source/blender/draw/intern/draw_cache_inline.h
+++ b/source/blender/draw/intern/draw_cache_inline.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_color_management.cc b/source/blender/draw/intern/draw_color_management.cc
index 6259236e3cfee2171f8a77bfe82a9acbe9391285..bb11f1ab3add6b7c45da0546e3b1224f3d3da70c 100644
--- a/source/blender/draw/intern/draw_color_management.cc
+++ b/source/blender/draw/intern/draw_color_management.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_color_management.h b/source/blender/draw/intern/draw_color_management.h
index 7dff17b14c65fadefe807944b9aef6dcfc6821e7..274f24b6f191e4b9f6e566799de78f3de069fb7e 100644
--- a/source/blender/draw/intern/draw_color_management.h
+++ b/source/blender/draw/intern/draw_color_management.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_common.c b/source/blender/draw/intern/draw_common.c
index 82b830f679937bd74962fba81482a6eee2b9809e..fcfaf404fc20af930ed04b7578c4507efca1c0b5 100644
--- a/source/blender/draw/intern/draw_common.c
+++ b/source/blender/draw/intern/draw_common.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_common.h b/source/blender/draw/intern/draw_common.h
index fdb7cfba580a18a67465e12377383e6b704eb6a0..53946c0cec56c9b0044cb7034d49f7106144e53a 100644
--- a/source/blender/draw/intern/draw_common.h
+++ b/source/blender/draw/intern/draw_common.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_debug.c b/source/blender/draw/intern/draw_debug.c
index e0114a6230e4e2a846e7096240e34b6c45c6b947..ef085a135bef5971f88d39a932bae0f5ce5942f5 100644
--- a/source/blender/draw/intern/draw_debug.c
+++ b/source/blender/draw/intern/draw_debug.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2018, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_debug.h b/source/blender/draw/intern/draw_debug.h
index 2616bc0af97b05af36d6db4a0f7bfc6f7cb0b980..333d734edb975fbac396cb46406bbbbb1717ce0d 100644
--- a/source/blender/draw/intern/draw_debug.h
+++ b/source/blender/draw/intern/draw_debug.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2018, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_fluid.c b/source/blender/draw/intern/draw_fluid.c
index 616307ca86bf50612d72e2d7b4addcb9f6714af4..667bd24dddb6d9699a281cc1a60cb68b1afc5768 100644
--- a/source/blender/draw/intern/draw_fluid.c
+++ b/source/blender/draw/intern/draw_fluid.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/draw/intern/draw_hair.c b/source/blender/draw/intern/draw_hair.c
index e9010d7a81a1aa42fb0d85fd329dbd87c456dee9..7e2ab2c61930f333057a8c3630a95116ba8f8567 100644
--- a/source/blender/draw/intern/draw_hair.c
+++ b/source/blender/draw/intern/draw_hair.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_hair_private.h b/source/blender/draw/intern/draw_hair_private.h
index d5d9a9fb2990fec445433401000df58cecbb273c..98a55d76373c0e2d65b4a60e596a8e73f2a2676d 100644
--- a/source/blender/draw/intern/draw_hair_private.h
+++ b/source/blender/draw/intern/draw_hair_private.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_instance_data.c b/source/blender/draw/intern/draw_instance_data.c
index ca01a99c0d30ba202ac72f2ae059edc536233f01..0e4e67f332051c5e41f1f55429d1a00862f07ba6 100644
--- a/source/blender/draw/intern/draw_instance_data.c
+++ b/source/blender/draw/intern/draw_instance_data.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_instance_data.h b/source/blender/draw/intern/draw_instance_data.h
index fb88b3dc6ec4099cc46a966f0f332a5a7040b367..4b5cf63bb3b81dd725df70e79e293b63acfa6e5d 100644
--- a/source/blender/draw/intern/draw_instance_data.h
+++ b/source/blender/draw/intern/draw_instance_data.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_manager.c b/source/blender/draw/intern/draw_manager.c
index 039fae433293af4a55ece5a69c97cd6e6009ea10..b4b92acbb56bfb1f0dbac539fef23dc802253680 100644
--- a/source/blender/draw/intern/draw_manager.c
+++ b/source/blender/draw/intern/draw_manager.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_manager.h b/source/blender/draw/intern/draw_manager.h
index 73fd157426c52d0ce0208966516a3c24a032cbf0..06643439bbc70a14edaffe95b8bc833fc77fa362 100644
--- a/source/blender/draw/intern/draw_manager.h
+++ b/source/blender/draw/intern/draw_manager.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_manager_data.c b/source/blender/draw/intern/draw_manager_data.c
index 3f299e878c435fb447673d93962646cfa79b6c3b..3b35b8c1f9dc78ccbc0d56eda5f310a4d3ce41f4 100644
--- a/source/blender/draw/intern/draw_manager_data.c
+++ b/source/blender/draw/intern/draw_manager_data.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_manager_exec.c b/source/blender/draw/intern/draw_manager_exec.c
index a579403975f3881fc47b512aab18be74294eefe3..07e47a0c691e195850fc1308cff65a43215ad66f 100644
--- a/source/blender/draw/intern/draw_manager_exec.c
+++ b/source/blender/draw/intern/draw_manager_exec.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_manager_profiling.c b/source/blender/draw/intern/draw_manager_profiling.c
index 80ea7bf654d9b80c4fea8aea921d9195e4cbec33..d14f5c7f1255002a4478613995b97104d726a271 100644
--- a/source/blender/draw/intern/draw_manager_profiling.c
+++ b/source/blender/draw/intern/draw_manager_profiling.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_manager_profiling.h b/source/blender/draw/intern/draw_manager_profiling.h
index e7c84491bdb5bf8fd7031fcb947dd156f4c7bdfd..5453fa5dc2726089c4efaf57861464f22bda9335 100644
--- a/source/blender/draw/intern/draw_manager_profiling.h
+++ b/source/blender/draw/intern/draw_manager_profiling.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_manager_shader.c b/source/blender/draw/intern/draw_manager_shader.c
index 3cfbb3fe416f3eff7ea1597cd95ec2dddb225ae6..618d2f46e9192c555827014deac00ed3c67e051b 100644
--- a/source/blender/draw/intern/draw_manager_shader.c
+++ b/source/blender/draw/intern/draw_manager_shader.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_manager_testing.h b/source/blender/draw/intern/draw_manager_testing.h
index f8b5dd5af46505fc4ee102685befed241d4e9bb7..14a75d9fd03514392564a96a56b44c4ea1a58929 100644
--- a/source/blender/draw/intern/draw_manager_testing.h
+++ b/source/blender/draw/intern/draw_manager_testing.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_manager_text.c b/source/blender/draw/intern/draw_manager_text.c
index 5d7b2c142c24edd0eac08628dbe111fc7e64c2b2..203276e63ef0d5743927c2f838be9eb7c2b496b3 100644
--- a/source/blender/draw/intern/draw_manager_text.c
+++ b/source/blender/draw/intern/draw_manager_text.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_manager_text.h b/source/blender/draw/intern/draw_manager_text.h
index 098b636cc98ec9615f8068093eb05ec3ab3ea55d..3b69247c12b47776bb918de23b351324c7df37b7 100644
--- a/source/blender/draw/intern/draw_manager_text.h
+++ b/source/blender/draw/intern/draw_manager_text.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_manager_texture.c b/source/blender/draw/intern/draw_manager_texture.c
index 86242468e4a0022f45bdc0e8c4e9dd4ce823a32c..44d8e424dacf9d8d61968400bcda471114ba21e5 100644
--- a/source/blender/draw/intern/draw_manager_texture.c
+++ b/source/blender/draw/intern/draw_manager_texture.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_select_buffer.c b/source/blender/draw/intern/draw_select_buffer.c
index bae07753336ca74fdf516bb40990fd25e9b7599d..3b95e10838e8d450f954061e8b8fbe9b480fd769 100644
--- a/source/blender/draw/intern/draw_select_buffer.c
+++ b/source/blender/draw/intern/draw_select_buffer.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2019, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/intern/draw_shader.c b/source/blender/draw/intern/draw_shader.c
index 28ac76ccd7fed1d5629536ad68056cc14c655dc3..53da300c106cdbe3eb603acf2e94547c225bf8d5 100644
--- a/source/blender/draw/intern/draw_shader.c
+++ b/source/blender/draw/intern/draw_shader.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup draw_engine
diff --git a/source/blender/draw/intern/draw_shader.h b/source/blender/draw/intern/draw_shader.h
index f9fa452671b205840de30d529d1f8779100b0b61..c27bfcbb73a17ec0323813001b0d3ea9e139c100 100644
--- a/source/blender/draw/intern/draw_shader.h
+++ b/source/blender/draw/intern/draw_shader.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_subdivision.h b/source/blender/draw/intern/draw_subdivision.h
index eeef2156e3596c2f06e70975b72c204e915b4a71..74db85f2c94fa9ea3f2d6fd856157a33d44e00a6 100644
--- a/source/blender/draw/intern/draw_subdivision.h
+++ b/source/blender/draw/intern/draw_subdivision.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 #pragma once
 
diff --git a/source/blender/draw/intern/draw_texture_pool.cc b/source/blender/draw/intern/draw_texture_pool.cc
index e3882d4acb6b263e78abdac768efbe2c52d05a65..b54df9284186fcdfdb71d83db31ea4de506ff9bc 100644
--- a/source/blender/draw/intern/draw_texture_pool.cc
+++ b/source/blender/draw/intern/draw_texture_pool.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_texture_pool.h b/source/blender/draw/intern/draw_texture_pool.h
index 920d29b4ccac1edd90167c2cba362e4ac8810f34..5a7915e15e725036bab03fa31b51bd43a53cd285 100644
--- a/source/blender/draw/intern/draw_texture_pool.h
+++ b/source/blender/draw/intern/draw_texture_pool.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_view.c b/source/blender/draw/intern/draw_view.c
index 6fe0abf1adfdc929989a2f7136abc80a21b1738b..817f97cbea42cc90a0c2f351cad654fce38409f5 100644
--- a/source/blender/draw/intern/draw_view.c
+++ b/source/blender/draw/intern/draw_view.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_view.h b/source/blender/draw/intern/draw_view.h
index 2646918cd3e97350c814212c2f00ddcd1258f992..d4a6f8a1a8562a3a47b18fa3a74e8a87ccc7a2e3 100644
--- a/source/blender/draw/intern/draw_view.h
+++ b/source/blender/draw/intern/draw_view.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2016, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_view_data.cc b/source/blender/draw/intern/draw_view_data.cc
index f730473783004f646140638484a9ccf8d000701f..682728eb22b53acd4e14b75fbec40b1b2888995f 100644
--- a/source/blender/draw/intern/draw_view_data.cc
+++ b/source/blender/draw/intern/draw_view_data.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/draw_view_data.h b/source/blender/draw/intern/draw_view_data.h
index 98ada5a59cbd973fa63c984e85e3401fd645c5fe..918b9e81f87106732c79ca7be32c2cb666fd343f 100644
--- a/source/blender/draw/intern/draw_view_data.h
+++ b/source/blender/draw/intern/draw_view_data.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2021, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh.c b/source/blender/draw/intern/mesh_extractors/extract_mesh.c
index 44de07c85943d28534cd28f32dfba333b607ce83..9dc82fa3d3297a3ece67fa3da08fc5f58d174eba 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh.c
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh.h b/source/blender/draw/intern/mesh_extractors/extract_mesh.h
index 37eb4f804427b90cd2e5c833b369b49fce4a5ae0..176be3927f90e36e983e67ae77fe9860e9f82bdd 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh.h
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_edituv.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_edituv.cc
index cd71beb1f026e429658421ddc3dff72b011975e0..ae536f0b87c8169eb85c7cc784dc76f466195c7b 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_edituv.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_edituv.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_fdots.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_fdots.cc
index 2e8b85250f39651f6998e0229613d419103ff78a..8db1660b9d056baea23846f1730e910555bb5571 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_fdots.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_fdots.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_lines.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_lines.cc
index 3d9729dea5650a704e405752fae650269cb6c862..37868e89c32d1fc99bd01a64d0c55153e52eb6c1 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_lines.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_lines.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_lines_adjacency.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_lines_adjacency.cc
index 2b01b6801c2c8956c37452ca9e4049376a9caa5d..de464fb286fd74cc97784c4371f935fc2d2de726 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_lines_adjacency.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_lines_adjacency.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_lines_paint_mask.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_lines_paint_mask.cc
index f7eb5022cdc7da038df8ee16cc6171bf1620b9b6..9d799feabc6d6fcf8a775cf50d89b37c73578b47 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_lines_paint_mask.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_lines_paint_mask.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_points.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_points.cc
index c3f89ab96ee049c6cfc8dc0b253d76aaa69d2c9e..e5dd3798fc651756ae8112637592ed5f37932abb 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_points.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_points.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_tris.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_tris.cc
index b1ace8bc6c9f95dc1d2f56df5688b7a23b41d063..6ca5692f3875e7f134c261b37c625952de38fded 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_tris.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_ibo_tris.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_attributes.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_attributes.cc
index b27633405b92482ac7d442881870d384a28ba166..d5e34bc082e0fedd7656aee509c8e7c71bfca440 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_attributes.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_attributes.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edge_fac.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edge_fac.cc
index 4185f2f84a209ac90e943859bcf8e809820e43dd..f998d8cb24ef4f44781e78cf36bf83b301cdf79e 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edge_fac.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edge_fac.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edit_data.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edit_data.cc
index 0002b95c86707098a5958f7881292f8c756af2b0..e17cef8a1e3d0ac25bd423207b9d06d620ca7ed6 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edit_data.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edit_data.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_data.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_data.cc
index b25e40690c96be3fa2a084e2bc4d9e6e88d6db4a..e8f4167c177fa612782350b3f1c8eb8d3a4ec7bc 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_data.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_data.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_stretch_angle.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_stretch_angle.cc
index 49b23ff1efe3c1ba1b810e1f3caf8df048d30aa6..0d4221802886decf59fb408c03438b110802c02f 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_stretch_angle.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_stretch_angle.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_stretch_area.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_stretch_area.cc
index c116fa5ba07b4c706211e4db1ca3049d8aff9561..ab397cc1717f7d1a6a56fab24eb3b419fb7e2d49 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_stretch_area.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_edituv_stretch_area.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_edituv_data.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_edituv_data.cc
index 285924171830dc1b8d17fcdb41281365531fcda0..1c4f6112877ac969fc9f9300951e5f414b8524d7 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_edituv_data.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_edituv_data.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_nor.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_nor.cc
index b2ebff08abfb693a4fae01931198b54e8c973a97..909c9ac23005017dde31dfae93ccd80f841d26a0 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_nor.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_nor.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_pos.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_pos.cc
index f65159f9b95f893358cea6c2964e6cd4c773f173..0a34cfa012d6a4f51b9bcb03e2f7e864a0892e12 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_pos.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_pos.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_uv.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_uv.cc
index 6fe714def305b3fd1c4af5deae3739622a92a256..7a3c108b75a8e9ed8c4863e4867edb2e1b5f3332 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_uv.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_uv.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_lnor.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_lnor.cc
index 93b94b210b235b9a6279914eda118e328ecf3a7c..8bc8b32fdf35a558ae05343e313c1d693f3b215c 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_lnor.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_lnor.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_mesh_analysis.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_mesh_analysis.cc
index 706c6ad54031c24e1e98c0fe1aad75e6e6b0af7c..968c1f693fbec28e0a79088ee0fdbdcbc9346410 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_mesh_analysis.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_mesh_analysis.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_orco.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_orco.cc
index c5187a478928fd76491e83ffb7f4e1fdb52668e2..d4c801ab0668368a7ad1bab20f9633eddcece819 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_orco.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_orco.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_pos_nor.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_pos_nor.cc
index 11f1515275cb54ea2861ace64c6bd4dad2420cfc..30c6de966febc6f6cfad670d9ff0e3106bb0100e 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_pos_nor.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_pos_nor.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_sculpt_data.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_sculpt_data.cc
index 753fbe7e0e2658076db7ee2ef1576f2ba34fea44..78c215845e04a44717a800b650fb2b605bface56 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_sculpt_data.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_sculpt_data.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_select_idx.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_select_idx.cc
index 33c27b45627de892f4b06fad263508d808054566..6db08e76ead6d342647ce85f73ff9d513e7e1068 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_select_idx.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_select_idx.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_skin_roots.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_skin_roots.cc
index 1847a360837065e59c0027af72cd738cc61a69cc..bb6331dd37795d87998bf236a8ee4d424bda7021 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_skin_roots.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_skin_roots.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_tan.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_tan.cc
index 03d1b3276898a1c5ea908bdca76a0bef335e1f93..209168750e788bead6cfaa2190da04b26746297f 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_tan.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_tan.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_uv.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_uv.cc
index 6e9d8ef6926a870cca6401ad19d812f2d6084b48..b532ff0080e1ec3675f14dad919cd385fe397ca8 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_uv.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_uv.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_vcol.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_vcol.cc
index a0307b9b2cd09b1349964dccaf2472b2b47b5738..138ff9fd1ffb6245dfa94cdd75875744cdab9646 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_vcol.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_vcol.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_weights.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_weights.cc
index bb8853b81543ce51da3df00332083af4ed6623cb..2e30d6bdfcf8bcd6ca048c851f49dae2a9ea98be 100644
--- a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_weights.cc
+++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_weights.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/intern/shaders/draw_hair_refine_info.hh b/source/blender/draw/intern/shaders/draw_hair_refine_info.hh
index bdfc26b7dcd954047c15089297bb69c8a360074e..16766ffee182748207983213a4c00bb53301c0be 100644
--- a/source/blender/draw/intern/shaders/draw_hair_refine_info.hh
+++ b/source/blender/draw/intern/shaders/draw_hair_refine_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup draw
diff --git a/source/blender/draw/tests/draw_testing.cc b/source/blender/draw/tests/draw_testing.cc
index 45a857e757712677af5cf2f9f24559dc4f11ca2b..7efd9efb731dffbc6753d64e8f0fe86689a7a870 100644
--- a/source/blender/draw/tests/draw_testing.cc
+++ b/source/blender/draw/tests/draw_testing.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "draw_testing.hh"
 
diff --git a/source/blender/draw/tests/draw_testing.hh b/source/blender/draw/tests/draw_testing.hh
index 00f0ac5bab7d0516e00672952211c5d97290635e..6f355fa7c7c2dd320f5515378cec98dc7593c117 100644
--- a/source/blender/draw/tests/draw_testing.hh
+++ b/source/blender/draw/tests/draw_testing.hh
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "gpu_testing.hh"
 
diff --git a/source/blender/draw/tests/shaders_test.cc b/source/blender/draw/tests/shaders_test.cc
index 80f87eea7ca17e787e1cc024ac821fbac3221018..2f7d58c6e4c98319df065bcf5b64992c6ced54ff 100644
--- a/source/blender/draw/tests/shaders_test.cc
+++ b/source/blender/draw/tests/shaders_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/editors/CMakeLists.txt b/source/blender/editors/CMakeLists.txt
index 092198cea86d92e28bfc32f80ae482494ac6a7af..2203c08dc50a01a17ee55918cde5da18bea86377 100644
--- a/source/blender/editors/CMakeLists.txt
+++ b/source/blender/editors/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 if(WITH_BLENDER)
   if(WITH_INPUT_NDOF)
diff --git a/source/blender/editors/animation/CMakeLists.txt b/source/blender/editors/animation/CMakeLists.txt
index 0baac40660d969c0cfbcc35e3147a206d86b0006..02e02abe66e106735cf2e3e0ca01d14d9d14ead8 100644
--- a/source/blender/editors/animation/CMakeLists.txt
+++ b/source/blender/editors/animation/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/animation/anim_channels_defines.c b/source/blender/editors/animation/anim_channels_defines.c
index a697fd2fc96875296cb6e4c8e6c0a30e629767b5..4780352e5dc1c44d6527617e6351d3c2ff69f000 100644
--- a/source/blender/editors/animation/anim_channels_defines.c
+++ b/source/blender/editors/animation/anim_channels_defines.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/anim_channels_edit.c b/source/blender/editors/animation/anim_channels_edit.c
index b97837a76b9b6c7fc16c6bb073f2291a48ad1cf6..3a57287cd6053c0767ef0e35a010b739c0e39635 100644
--- a/source/blender/editors/animation/anim_channels_edit.c
+++ b/source/blender/editors/animation/anim_channels_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/anim_deps.c b/source/blender/editors/animation/anim_deps.c
index 7a34d8b542a5f99f9d5054d7b09d5a6ca8874f80..d80eac2422e2154ea936cb2f1af80a3d253c7c2c 100644
--- a/source/blender/editors/animation/anim_deps.c
+++ b/source/blender/editors/animation/anim_deps.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/anim_draw.c b/source/blender/editors/animation/anim_draw.c
index 6589756c5269501f28c2e3507ab86f74fa967321..ee1522c7b760bf4db286ceda73b0b9a84c448497 100644
--- a/source/blender/editors/animation/anim_draw.c
+++ b/source/blender/editors/animation/anim_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/anim_filter.c b/source/blender/editors/animation/anim_filter.c
index 3307385b84acf7b63a84e8236c2e14c242c2d57e..d6163f21c796b0d84ee44704cbbc0b139c234a1e 100644
--- a/source/blender/editors/animation/anim_filter.c
+++ b/source/blender/editors/animation/anim_filter.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/anim_intern.h b/source/blender/editors/animation/anim_intern.h
index 9029c451290b6092ada96dcdac87c26b5883fddc..e7277c51cd36219935b20bca1e217e0ad504ce37 100644
--- a/source/blender/editors/animation/anim_intern.h
+++ b/source/blender/editors/animation/anim_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009, Blender Foundation, Joshua Leung.
- * This is a new part of Blender (with some old code)
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/anim_ipo_utils.c b/source/blender/editors/animation/anim_ipo_utils.c
index 0315b93508b8c1272f2a19466d07386978267357..8e8fd722787759fbe6c053aa863250bca974b234 100644
--- a/source/blender/editors/animation/anim_ipo_utils.c
+++ b/source/blender/editors/animation/anim_ipo_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/anim_markers.c b/source/blender/editors/animation/anim_markers.c
index baf3eaae8e227362c6988aabf4e95fe96f2f8f3c..9566402ad85eafc1856e0d2f6683a545e7d9a545 100644
--- a/source/blender/editors/animation/anim_markers.c
+++ b/source/blender/editors/animation/anim_markers.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/anim_motion_paths.c b/source/blender/editors/animation/anim_motion_paths.c
index d4a8e7921d612af6848c9e87a8b991cb4a6215b8..539227933cf9e499c579d10d3858b2995f12fd8c 100644
--- a/source/blender/editors/animation/anim_motion_paths.c
+++ b/source/blender/editors/animation/anim_motion_paths.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/editors/animation/anim_ops.c b/source/blender/editors/animation/anim_ops.c
index 8c52480b89a1b71334c16eaf5eee1fd977d4ef97..1e8f46fd49053040b22c9df303f3d76c23a99b40 100644
--- a/source/blender/editors/animation/anim_ops.c
+++ b/source/blender/editors/animation/anim_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/drivers.c b/source/blender/editors/animation/drivers.c
index bdcbac80699bea5325e16689a58faa3ca4cacdf2..6ae82a754aaa5ca93a36e747e2a98377078afaa1 100644
--- a/source/blender/editors/animation/drivers.c
+++ b/source/blender/editors/animation/drivers.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/fmodifier_ui.c b/source/blender/editors/animation/fmodifier_ui.c
index c4d8484e6a832bd7e11e26f7e58e4d09f43b7c3c..8da96e4f42b777997469847d580c7e83635f3f14 100644
--- a/source/blender/editors/animation/fmodifier_ui.c
+++ b/source/blender/editors/animation/fmodifier_ui.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/keyframes_draw.c b/source/blender/editors/animation/keyframes_draw.c
index ae8d04f51d392ba642d9f219861ff317910e5dfe..f40c1b983d77db07b2ad9df3aa1a381b9058c40b 100644
--- a/source/blender/editors/animation/keyframes_draw.c
+++ b/source/blender/editors/animation/keyframes_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/keyframes_edit.c b/source/blender/editors/animation/keyframes_edit.c
index dfe6566df67db1166785ec2b99b0896ab2729f0f..f18873cc22b30dad581ab113a16ffa447cd6744a 100644
--- a/source/blender/editors/animation/keyframes_edit.c
+++ b/source/blender/editors/animation/keyframes_edit.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/keyframes_general.c b/source/blender/editors/animation/keyframes_general.c
index 92017c02858b6201f11ceb6269223d509e734310..24ba62fc0f74bc020b252d7541ccac4301f8f217 100644
--- a/source/blender/editors/animation/keyframes_general.c
+++ b/source/blender/editors/animation/keyframes_general.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/keyframes_keylist.cc b/source/blender/editors/animation/keyframes_keylist.cc
index aba73ec141b6740afce6442c9af82312fb2e6fa0..3f9592fb4ae374968d43b2824ac5aa039865c6b2 100644
--- a/source/blender/editors/animation/keyframes_keylist.cc
+++ b/source/blender/editors/animation/keyframes_keylist.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/keyframes_keylist_test.cc b/source/blender/editors/animation/keyframes_keylist_test.cc
index 914693842cafc771981c99a7e6de460812a789bc..505679565d89dbbeca16d3251b8a9310fda6f87f 100644
--- a/source/blender/editors/animation/keyframes_keylist_test.cc
+++ b/source/blender/editors/animation/keyframes_keylist_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/editors/animation/keyframing.c b/source/blender/editors/animation/keyframing.c
index 0a435a9034a33339e1e3970200350c853d75de8d..a4845de7d7d64ddecb222b274209821c675c9852 100644
--- a/source/blender/editors/animation/keyframing.c
+++ b/source/blender/editors/animation/keyframing.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/keyingsets.c b/source/blender/editors/animation/keyingsets.c
index 59bb60d8fa0863aed7191dafae22ab300cbf88a0..6fcdd21bad8676abceab8c3a55f3663ee99a1d6c 100644
--- a/source/blender/editors/animation/keyingsets.c
+++ b/source/blender/editors/animation/keyingsets.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/animation/time_scrub_ui.c b/source/blender/editors/animation/time_scrub_ui.c
index 2ddaa2c415ed8ca78d9ef2c7c55bfacd32627c85..3a780b323985a7cbc2006749d10a255a1d44c620 100644
--- a/source/blender/editors/animation/time_scrub_ui.c
+++ b/source/blender/editors/animation/time_scrub_ui.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edanimation
diff --git a/source/blender/editors/armature/CMakeLists.txt b/source/blender/editors/armature/CMakeLists.txt
index c8ca27c64a3e80423169887b6f2fcb111f630f94..db166eab3bb4bb7654874cb1e8318ac70cc618aa 100644
--- a/source/blender/editors/armature/CMakeLists.txt
+++ b/source/blender/editors/armature/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/armature/armature_add.c b/source/blender/editors/armature/armature_add.c
index e1d4b5fec73dd36b1d39f2cc2100c1c847952abd..f9b973733af1744d158a7eabd6450639751c97ea 100644
--- a/source/blender/editors/armature/armature_add.c
+++ b/source/blender/editors/armature/armature_add.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/armature_edit.c b/source/blender/editors/armature/armature_edit.c
index 0094783e50fa9e29ea11fbdbcd47f17ad64be5f4..963d7ea11494be9ab430078f5a29047ced02b996 100644
--- a/source/blender/editors/armature/armature_edit.c
+++ b/source/blender/editors/armature/armature_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/armature_intern.h b/source/blender/editors/armature/armature_intern.h
index aaeac29b7d0e74e456c6b90e9c78c2349edcece3..6fdc8379e4117b8d9ecb9a75e446e84a45c2685f 100644
--- a/source/blender/editors/armature/armature_intern.h
+++ b/source/blender/editors/armature/armature_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/armature_naming.c b/source/blender/editors/armature/armature_naming.c
index c45c6297d86b6da0d833e258d0a010bec5b3128b..e1f2605481f011ab40b72c58602b7bdae7be949c 100644
--- a/source/blender/editors/armature/armature_naming.c
+++ b/source/blender/editors/armature/armature_naming.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/armature_ops.c b/source/blender/editors/armature/armature_ops.c
index 364e778fc2ee15c0d1c0b740c38d689358443af6..2095ef34f36bd91c9913517cf3766b03cdcb9d9d 100644
--- a/source/blender/editors/armature/armature_ops.c
+++ b/source/blender/editors/armature/armature_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/armature_relations.c b/source/blender/editors/armature/armature_relations.c
index 17d25aec1987ff0d36a37fcaf5cfa7b5fc1096b9..45d64807e652e9b16bfdbd98638c8863ec9b9f93 100644
--- a/source/blender/editors/armature/armature_relations.c
+++ b/source/blender/editors/armature/armature_relations.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/armature_select.c b/source/blender/editors/armature/armature_select.c
index 111989f1d86e925675869181a2066fbe9d8a1996..d7240782840ea5b6d40b9afde314fff978446d04 100644
--- a/source/blender/editors/armature/armature_select.c
+++ b/source/blender/editors/armature/armature_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/armature_skinning.c b/source/blender/editors/armature/armature_skinning.c
index 9ef198f442c96e99181ecab62a01c7b4c2e5eb29..64035732a3964f9603bc7fe2fe273792a3babb35 100644
--- a/source/blender/editors/armature/armature_skinning.c
+++ b/source/blender/editors/armature/armature_skinning.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/armature_utils.c b/source/blender/editors/armature/armature_utils.c
index 1c48285563da62d41dbf99dbda64f189bdefa98c..09174aa5e47cc4c8905dcbc704c9f831d401d4b2 100644
--- a/source/blender/editors/armature/armature_utils.c
+++ b/source/blender/editors/armature/armature_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/editarmature_undo.c b/source/blender/editors/armature/editarmature_undo.c
index 9117dfe892f02a619092f3b8cec8bf1ecc956e20..bcf8b7cff99920932c73fd9267812b0484d84c50 100644
--- a/source/blender/editors/armature/editarmature_undo.c
+++ b/source/blender/editors/armature/editarmature_undo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/meshlaplacian.c b/source/blender/editors/armature/meshlaplacian.c
index b3b6c37cf61bce1e76feb9640f670ebc3530d970..31caa29a02adeb6907bd8dd5378ff85587b6709e 100644
--- a/source/blender/editors/armature/meshlaplacian.c
+++ b/source/blender/editors/armature/meshlaplacian.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/meshlaplacian.h b/source/blender/editors/armature/meshlaplacian.h
index f024b17f1cc3be40eaa11a1293416c9ac42549d4..d45909872b8c31dccfe9f8a737c2e7531492a66f 100644
--- a/source/blender/editors/armature/meshlaplacian.h
+++ b/source/blender/editors/armature/meshlaplacian.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/pose_backup.cc b/source/blender/editors/armature/pose_backup.cc
index 9c9347309b2408f5e023f60af1e708064ae8024f..fbcd3a82311083d0cf03656865239fb9f1480221 100644
--- a/source/blender/editors/armature/pose_backup.cc
+++ b/source/blender/editors/armature/pose_backup.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/pose_edit.c b/source/blender/editors/armature/pose_edit.c
index 5db4a4b6eaa611c8f4850838683d27a393dc6207..e227e69f9e1ab02f31d6f10f9081f6fa7e38e1bd 100644
--- a/source/blender/editors/armature/pose_edit.c
+++ b/source/blender/editors/armature/pose_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/pose_group.c b/source/blender/editors/armature/pose_group.c
index 10ffa3fcae294c0994759d5a47e9977030c0858e..d0f0bd55eea36e2047c201d7826bcb3044ac5f76 100644
--- a/source/blender/editors/armature/pose_group.c
+++ b/source/blender/editors/armature/pose_group.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/pose_lib.c b/source/blender/editors/armature/pose_lib.c
index dc96c777be0fad6eafff11141ea6a3df405cd38e..317ea06cecb1ec60951e6bc383d56815b24e3ba2 100644
--- a/source/blender/editors/armature/pose_lib.c
+++ b/source/blender/editors/armature/pose_lib.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/pose_lib_2.c b/source/blender/editors/armature/pose_lib_2.c
index e7cbde0b23992b97287325b1fd8b259ee3741e14..65af85a6ab13eb0031af23ed80dd8354b47ae54e 100644
--- a/source/blender/editors/armature/pose_lib_2.c
+++ b/source/blender/editors/armature/pose_lib_2.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021, Blender Foundation
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/pose_select.c b/source/blender/editors/armature/pose_select.c
index f41c3657431be36a651722cac447e3b1f865b3ae..12238280b0625deb6ed84fe014f2e7b02a5f3efb 100644
--- a/source/blender/editors/armature/pose_select.c
+++ b/source/blender/editors/armature/pose_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/pose_slide.c b/source/blender/editors/armature/pose_slide.c
index 42211d847ff2451dbf82f8b8d67a0488e1991c3b..b0dd81b2e6adfd0526874867f870f15d07940f3e 100644
--- a/source/blender/editors/armature/pose_slide.c
+++ b/source/blender/editors/armature/pose_slide.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009, Blender Foundation, Joshua Leung
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/pose_transform.c b/source/blender/editors/armature/pose_transform.c
index 7c52e4fafdd300402b9e1ffff6d0751a6f7bb59c..68330a3ac23b7df361dcbd4b41ce25ccb274cbc0 100644
--- a/source/blender/editors/armature/pose_transform.c
+++ b/source/blender/editors/armature/pose_transform.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/armature/pose_utils.c b/source/blender/editors/armature/pose_utils.c
index 19a5348dbc0a8afc3c01d07bc9a087c69bee6cd6..a98a08d004a2ba14e27a11b4556327528c5866cb 100644
--- a/source/blender/editors/armature/pose_utils.c
+++ b/source/blender/editors/armature/pose_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009, Blender Foundation, Joshua Leung
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. */
 
 /** \file
  * \ingroup edarmature
diff --git a/source/blender/editors/asset/CMakeLists.txt b/source/blender/editors/asset/CMakeLists.txt
index d91102528e57c6be41a5175847746894fae59c0f..1b0d49039edf68aca67e9d7eff41411e5148ed43 100644
--- a/source/blender/editors/asset/CMakeLists.txt
+++ b/source/blender/editors/asset/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/source/blender/editors/asset/ED_asset_catalog.h b/source/blender/editors/asset/ED_asset_catalog.h
index acb0b67d9c050da828937ea52c67925478085e99..04df381bec991a16a64d1c845eaed7f575b095ec 100644
--- a/source/blender/editors/asset/ED_asset_catalog.h
+++ b/source/blender/editors/asset/ED_asset_catalog.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/ED_asset_catalog.hh b/source/blender/editors/asset/ED_asset_catalog.hh
index d4df15561d058c8dbaf43ddf76d14b4b7091585f..48ca58c6dc63e8de3c76b698e9c36268d103b99c 100644
--- a/source/blender/editors/asset/ED_asset_catalog.hh
+++ b/source/blender/editors/asset/ED_asset_catalog.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/ED_asset_filter.h b/source/blender/editors/asset/ED_asset_filter.h
index 3b92baea117ddfd283d4737ef4d65b80e512e423..8f1844df99449f7914682adff1bb0771debd9010 100644
--- a/source/blender/editors/asset/ED_asset_filter.h
+++ b/source/blender/editors/asset/ED_asset_filter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/ED_asset_handle.h b/source/blender/editors/asset/ED_asset_handle.h
index dce851164a563243ac40ae34258287cc0e6f3c84..b408e919f3293e63320bc5587732ba5c5b1890c5 100644
--- a/source/blender/editors/asset/ED_asset_handle.h
+++ b/source/blender/editors/asset/ED_asset_handle.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/ED_asset_indexer.h b/source/blender/editors/asset/ED_asset_indexer.h
index 33558d8cda52310496fca59a40432cf692f4ba0a..924a761864babdc2f12c0578939f2a2ebffca507 100644
--- a/source/blender/editors/asset/ED_asset_indexer.h
+++ b/source/blender/editors/asset/ED_asset_indexer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/ED_asset_library.h b/source/blender/editors/asset/ED_asset_library.h
index 62a7d6ffa9bcccfef0b1772dee2ce84fa8e319e9..cc0d97054b65e6a827fccf8e9a4d46b4c3179f88 100644
--- a/source/blender/editors/asset/ED_asset_library.h
+++ b/source/blender/editors/asset/ED_asset_library.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/ED_asset_list.h b/source/blender/editors/asset/ED_asset_list.h
index 669bb6dbe36b2a87419cb0d37ac60e274a759759..2dc67fc4d378d3747ab9f869f76aeb707ec31976 100644
--- a/source/blender/editors/asset/ED_asset_list.h
+++ b/source/blender/editors/asset/ED_asset_list.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/ED_asset_list.hh b/source/blender/editors/asset/ED_asset_list.hh
index 24def2fb4ab3cc133e9603ce1ca31cda853bcb2a..20faf5c495d2c6e983c000e37e7041da6d11967e 100644
--- a/source/blender/editors/asset/ED_asset_list.hh
+++ b/source/blender/editors/asset/ED_asset_list.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/ED_asset_mark_clear.h b/source/blender/editors/asset/ED_asset_mark_clear.h
index 8f10e769c5287bd3aded1cd9dd4510d373b94e67..36090e8e5be7f5c340ef4fe06c0db16dafbaf5f8 100644
--- a/source/blender/editors/asset/ED_asset_mark_clear.h
+++ b/source/blender/editors/asset/ED_asset_mark_clear.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/ED_asset_temp_id_consumer.h b/source/blender/editors/asset/ED_asset_temp_id_consumer.h
index 0848f4225bd6a3e6750bb834668e2844717440fa..43a466d51ad82f921ff4a82a51888c2b989f18f2 100644
--- a/source/blender/editors/asset/ED_asset_temp_id_consumer.h
+++ b/source/blender/editors/asset/ED_asset_temp_id_consumer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/ED_asset_type.h b/source/blender/editors/asset/ED_asset_type.h
index e1c327808aa7cb84a889f8148a067cac9ebc6fa5..88511490b5c08d23ab0b25e6b887d8fd79939385 100644
--- a/source/blender/editors/asset/ED_asset_type.h
+++ b/source/blender/editors/asset/ED_asset_type.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/intern/asset_catalog.cc b/source/blender/editors/asset/intern/asset_catalog.cc
index f6c02f86f0aaf7104169528fb939b0be9632e93d..29aba1e2c90958dbef6aa5795e34665bf35faecf 100644
--- a/source/blender/editors/asset/intern/asset_catalog.cc
+++ b/source/blender/editors/asset/intern/asset_catalog.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/intern/asset_filter.cc b/source/blender/editors/asset/intern/asset_filter.cc
index 70e3e2f55ea7d22dceec7ac6dae0f5e913c31c77..3bcf42ff2061c02843b5b3bc021418453d2ce442 100644
--- a/source/blender/editors/asset/intern/asset_filter.cc
+++ b/source/blender/editors/asset/intern/asset_filter.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/intern/asset_handle.cc b/source/blender/editors/asset/intern/asset_handle.cc
index a2029d3cc50226f0974c3b1ff227b5bcd94574d8..ade8b803ed36e18614bf919993f109f236f6e85e 100644
--- a/source/blender/editors/asset/intern/asset_handle.cc
+++ b/source/blender/editors/asset/intern/asset_handle.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/intern/asset_indexer.cc b/source/blender/editors/asset/intern/asset_indexer.cc
index 336ccff900caed38c58f2f770e170448b8daf432..49c4002eee813e2302c48780c21228f6a3aa9c65 100644
--- a/source/blender/editors/asset/intern/asset_indexer.cc
+++ b/source/blender/editors/asset/intern/asset_indexer.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/intern/asset_library_reference.cc b/source/blender/editors/asset/intern/asset_library_reference.cc
index df1d58df5f95735d2172fd6c673dab316f2df458..04f7782111403863b8990a39c4db86874c048d25 100644
--- a/source/blender/editors/asset/intern/asset_library_reference.cc
+++ b/source/blender/editors/asset/intern/asset_library_reference.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/intern/asset_library_reference.hh b/source/blender/editors/asset/intern/asset_library_reference.hh
index 7e8cb4a3472a6eb193247f3e0ae4b47d39bee444..b4f4b00e3ffe259760606d8bad0cfc423035646d 100644
--- a/source/blender/editors/asset/intern/asset_library_reference.hh
+++ b/source/blender/editors/asset/intern/asset_library_reference.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/intern/asset_library_reference_enum.cc b/source/blender/editors/asset/intern/asset_library_reference_enum.cc
index 05526f222a516814a4d2e165c5f64bbc280a6a83..67e253a4fcd1adb1be39f4601030fb19fbefe63a 100644
--- a/source/blender/editors/asset/intern/asset_library_reference_enum.cc
+++ b/source/blender/editors/asset/intern/asset_library_reference_enum.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/intern/asset_list.cc b/source/blender/editors/asset/intern/asset_list.cc
index fa0946ffe3d0b1862fa24918e8753bb56e013096..4941e11a7b3bbc1c91c4798cbaf302e8d9a404d4 100644
--- a/source/blender/editors/asset/intern/asset_list.cc
+++ b/source/blender/editors/asset/intern/asset_list.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/intern/asset_mark_clear.cc b/source/blender/editors/asset/intern/asset_mark_clear.cc
index 2e5bdb633593ff2fca16e83963e35909f9f0e6e1..785676f1143e6fa1b5053c105b17561c8870a9a8 100644
--- a/source/blender/editors/asset/intern/asset_mark_clear.cc
+++ b/source/blender/editors/asset/intern/asset_mark_clear.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/intern/asset_ops.cc b/source/blender/editors/asset/intern/asset_ops.cc
index 0469f14487d35f4b8363fd082ee00a52f6908ad7..1d484f9ce85ec77c2921d4cae009c963a5339eed 100644
--- a/source/blender/editors/asset/intern/asset_ops.cc
+++ b/source/blender/editors/asset/intern/asset_ops.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/intern/asset_temp_id_consumer.cc b/source/blender/editors/asset/intern/asset_temp_id_consumer.cc
index 8790c907f058622905785d14fd3a24a42025be75..376454d62b62f684ba75e0764cd889d961345015 100644
--- a/source/blender/editors/asset/intern/asset_temp_id_consumer.cc
+++ b/source/blender/editors/asset/intern/asset_temp_id_consumer.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/asset/intern/asset_type.cc b/source/blender/editors/asset/intern/asset_type.cc
index 3d6ce3e3409028503bb656436d80e751ee7124c4..2c219f3dce234fa1d5b7c00fd4144090de87210c 100644
--- a/source/blender/editors/asset/intern/asset_type.cc
+++ b/source/blender/editors/asset/intern/asset_type.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edasset
diff --git a/source/blender/editors/curve/CMakeLists.txt b/source/blender/editors/curve/CMakeLists.txt
index 0ac572c04226426f0b2283c552992f5fec396271..8cb44c8aa71a16e53967c57abacabdf5a2f7a100 100644
--- a/source/blender/editors/curve/CMakeLists.txt
+++ b/source/blender/editors/curve/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/curve/curve_intern.h b/source/blender/editors/curve/curve_intern.h
index 0d17af1983d3abae2d3ab7a29cba2c4619ae413f..c3ea36fcda52d0db3fcf525527d71540dc898efe 100644
--- a/source/blender/editors/curve/curve_intern.h
+++ b/source/blender/editors/curve/curve_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edcurve
diff --git a/source/blender/editors/curve/curve_ops.c b/source/blender/editors/curve/curve_ops.c
index 02cb1ee8e1c2f1eb4f411279d6b5775575e994f5..850b0cce955e146405660bbf7a26753c549d55cc 100644
--- a/source/blender/editors/curve/curve_ops.c
+++ b/source/blender/editors/curve/curve_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edcurve
diff --git a/source/blender/editors/curve/editcurve.c b/source/blender/editors/curve/editcurve.c
index a70bc1c0350af75b3771bde844c86a667c0315c8..20a2251b6e12ed4acf6b71a37e454acd3576563b 100644
--- a/source/blender/editors/curve/editcurve.c
+++ b/source/blender/editors/curve/editcurve.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edcurve
diff --git a/source/blender/editors/curve/editcurve_add.c b/source/blender/editors/curve/editcurve_add.c
index daef4a2169285776dae0f44465ced789352f3f54..2aaebf494a62eaf8ccd377a37002cc72cab0eaf8 100644
--- a/source/blender/editors/curve/editcurve_add.c
+++ b/source/blender/editors/curve/editcurve_add.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edcurve
diff --git a/source/blender/editors/curve/editcurve_paint.c b/source/blender/editors/curve/editcurve_paint.c
index 403ace56e3bdf8a4f1a244649d40895770434dc5..19e4daf1db781d5c90693989dbadae6188c25e8e 100644
--- a/source/blender/editors/curve/editcurve_paint.c
+++ b/source/blender/editors/curve/editcurve_paint.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edcurve
diff --git a/source/blender/editors/curve/editcurve_query.c b/source/blender/editors/curve/editcurve_query.c
index a8fd3ea28032389b787057b6a998c0b8839cc37c..5bc3010678dafd691bbba2b51f646baaa43c1fe2 100644
--- a/source/blender/editors/curve/editcurve_query.c
+++ b/source/blender/editors/curve/editcurve_query.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edcurve
diff --git a/source/blender/editors/curve/editcurve_select.c b/source/blender/editors/curve/editcurve_select.c
index 1229b7eacc84c2410957c0749eeb7b984db75699..5a1777b7097469d6f38c19c92c0d0601f2ebb2ef 100644
--- a/source/blender/editors/curve/editcurve_select.c
+++ b/source/blender/editors/curve/editcurve_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edcurve
diff --git a/source/blender/editors/curve/editcurve_undo.c b/source/blender/editors/curve/editcurve_undo.c
index 5619e2efc366177f8c1c5291f94390ce283cc511..7b68c859b4398843a3e5072a12841732fa8a0b07 100644
--- a/source/blender/editors/curve/editcurve_undo.c
+++ b/source/blender/editors/curve/editcurve_undo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edcurve
diff --git a/source/blender/editors/curve/editfont.c b/source/blender/editors/curve/editfont.c
index 6e0aeb87318612fd388bd9c561805029377ccce4..b2af0643e2c8c5efa6526be8d422142dc7708f92 100644
--- a/source/blender/editors/curve/editfont.c
+++ b/source/blender/editors/curve/editfont.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edcurve
diff --git a/source/blender/editors/curve/editfont_undo.c b/source/blender/editors/curve/editfont_undo.c
index 45448f186757358e1e7d12fa14cb80f4b1f93662..09e5428b0f9c9ead370c58e8b760429840793ec0 100644
--- a/source/blender/editors/curve/editfont_undo.c
+++ b/source/blender/editors/curve/editfont_undo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edcurve
diff --git a/source/blender/editors/datafiles/CMakeLists.txt b/source/blender/editors/datafiles/CMakeLists.txt
index 8d32eba176667bd306689cd5cb0b192bc0675917..edbdc1ee96fe8a22fddbe0ed3a9ec1a6613de655 100644
--- a/source/blender/editors/datafiles/CMakeLists.txt
+++ b/source/blender/editors/datafiles/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public LicenseS
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
 
diff --git a/source/blender/editors/geometry/CMakeLists.txt b/source/blender/editors/geometry/CMakeLists.txt
index 8c9209159373559404f204e06d82b1397bafa2b6..e0c440b09b4397df024ccaa7e779c74ecc55d50e 100644
--- a/source/blender/editors/geometry/CMakeLists.txt
+++ b/source/blender/editors/geometry/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/geometry/geometry_attributes.cc b/source/blender/editors/geometry/geometry_attributes.cc
index 17229c4898e3230debca5bcf9ad598fed1ac3286..77cd5d9221f3ba9b3d0676a90022cb41191ad597 100644
--- a/source/blender/editors/geometry/geometry_attributes.cc
+++ b/source/blender/editors/geometry/geometry_attributes.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgeometry
diff --git a/source/blender/editors/geometry/geometry_intern.hh b/source/blender/editors/geometry/geometry_intern.hh
index 30a2a1d6eb1eb613661d98bef2b58d5f1ef0e27f..fe56bea9f4370884a3a102091450d9afd3d671b7 100644
--- a/source/blender/editors/geometry/geometry_intern.hh
+++ b/source/blender/editors/geometry/geometry_intern.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgeometry
diff --git a/source/blender/editors/geometry/geometry_ops.cc b/source/blender/editors/geometry/geometry_ops.cc
index 8933b2a7f004b332c05d4fb120c9d7fcfb799fc2..a87b09f8ff31c75fb7a8ec6d11950a7e14db4e3e 100644
--- a/source/blender/editors/geometry/geometry_ops.cc
+++ b/source/blender/editors/geometry/geometry_ops.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgeometry
diff --git a/source/blender/editors/gizmo_library/CMakeLists.txt b/source/blender/editors/gizmo_library/CMakeLists.txt
index bfe8334b390dde90fbf319b5ab07077f8334c532..232b57bef4c459063ebe7d4ab49ea19607667396 100644
--- a/source/blender/editors/gizmo_library/CMakeLists.txt
+++ b/source/blender/editors/gizmo_library/CMakeLists.txt
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/gizmo_library/geometry/geom_arrow_gizmo.c b/source/blender/editors/gizmo_library/geometry/geom_arrow_gizmo.c
index 668b59ac191f08f5155a114a14799e5fb68546ba..5b514e0209948fb969cfc5e320ff9d8d4ff22c1a 100644
--- a/source/blender/editors/gizmo_library/geometry/geom_arrow_gizmo.c
+++ b/source/blender/editors/gizmo_library/geometry/geom_arrow_gizmo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/geometry/geom_cube_gizmo.c b/source/blender/editors/gizmo_library/geometry/geom_cube_gizmo.c
index 51618e353f4a788141236472b4d50dc70cd396fb..3173012948811c89f4ac8677412331b09e04082a 100644
--- a/source/blender/editors/gizmo_library/geometry/geom_cube_gizmo.c
+++ b/source/blender/editors/gizmo_library/geometry/geom_cube_gizmo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/geometry/geom_dial_gizmo.c b/source/blender/editors/gizmo_library/geometry/geom_dial_gizmo.c
index 7e37c233c2a2c1efd86d86cfab67045e49c751f0..80f27f63e274b61764f962bf9ad9c7d2db54ba1d 100644
--- a/source/blender/editors/gizmo_library/geometry/geom_dial_gizmo.c
+++ b/source/blender/editors/gizmo_library/geometry/geom_dial_gizmo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_draw_utils.c b/source/blender/editors/gizmo_library/gizmo_draw_utils.c
index 1179c9140e2da7619c52c597f067aef7d676ce54..8d2aec184510f7a5e4f4636b1b9ee5d60bc52962 100644
--- a/source/blender/editors/gizmo_library/gizmo_draw_utils.c
+++ b/source/blender/editors/gizmo_library/gizmo_draw_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_geometry.h b/source/blender/editors/gizmo_library/gizmo_geometry.h
index 70f508df8b627652cb47e873326de75fabe2479e..a8a52bbd3df2c8a3dac1deb5a39b36eeea02486b 100644
--- a/source/blender/editors/gizmo_library/gizmo_geometry.h
+++ b/source/blender/editors/gizmo_library/gizmo_geometry.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_library_intern.h b/source/blender/editors/gizmo_library/gizmo_library_intern.h
index 4a481f4bc595b2eb00f3de8e4bd0497c4a51bb2c..2732792a5f46b97a902cacb198ffcba119af3fe5 100644
--- a/source/blender/editors/gizmo_library/gizmo_library_intern.h
+++ b/source/blender/editors/gizmo_library/gizmo_library_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_library_presets.c b/source/blender/editors/gizmo_library/gizmo_library_presets.c
index f842c20b74fede657d210ec8bd5e10aa59039595..1ac4ce0bcdfd2cd38c07aa0926873700fd592887 100644
--- a/source/blender/editors/gizmo_library/gizmo_library_presets.c
+++ b/source/blender/editors/gizmo_library/gizmo_library_presets.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_library_utils.c b/source/blender/editors/gizmo_library/gizmo_library_utils.c
index 0237c6062d1c1c977dddd35e38d37c9aca0288b9..5a54d356eee68cda4573f4516af64d9e83c1498c 100644
--- a/source/blender/editors/gizmo_library/gizmo_library_utils.c
+++ b/source/blender/editors/gizmo_library/gizmo_library_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_types/arrow3d_gizmo.c b/source/blender/editors/gizmo_library/gizmo_types/arrow3d_gizmo.c
index 3362cf9732e60b2cb53bda955a17350e8c7e8382..3c0bd9bdbc2d502e5aed1b750cf9555651d7b709 100644
--- a/source/blender/editors/gizmo_library/gizmo_types/arrow3d_gizmo.c
+++ b/source/blender/editors/gizmo_library/gizmo_types/arrow3d_gizmo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_types/blank3d_gizmo.c b/source/blender/editors/gizmo_library/gizmo_types/blank3d_gizmo.c
index b1c8efcfafc221258f5fecadfaadc2e32c1fc21c..68c1237114922d9f4bbe29852ca8689cfe9bcaeb 100644
--- a/source/blender/editors/gizmo_library/gizmo_types/blank3d_gizmo.c
+++ b/source/blender/editors/gizmo_library/gizmo_types/blank3d_gizmo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_types/button2d_gizmo.c b/source/blender/editors/gizmo_library/gizmo_types/button2d_gizmo.c
index 553ea4bbb6ef3c17f9ae32de8728e6ccc9638406..5e20cc73f1ab7b34cb8b18a40e004d919993123e 100644
--- a/source/blender/editors/gizmo_library/gizmo_types/button2d_gizmo.c
+++ b/source/blender/editors/gizmo_library/gizmo_types/button2d_gizmo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_types/cage2d_gizmo.c b/source/blender/editors/gizmo_library/gizmo_types/cage2d_gizmo.c
index 34d3f737f581b7c6948dbb87a42ec75ee30f9331..4c54aa10c33acdd750a06e726c10df766651384f 100644
--- a/source/blender/editors/gizmo_library/gizmo_types/cage2d_gizmo.c
+++ b/source/blender/editors/gizmo_library/gizmo_types/cage2d_gizmo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_types/cage3d_gizmo.c b/source/blender/editors/gizmo_library/gizmo_types/cage3d_gizmo.c
index 3871c1de77ad3e80bc45d94d3aff290995974779..0a5ec3330c2a8d99d30efc687866f3fabfa9cc5a 100644
--- a/source/blender/editors/gizmo_library/gizmo_types/cage3d_gizmo.c
+++ b/source/blender/editors/gizmo_library/gizmo_types/cage3d_gizmo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_types/dial3d_gizmo.c b/source/blender/editors/gizmo_library/gizmo_types/dial3d_gizmo.c
index d4d4c889209d58fecf31fae70eef6999401b6606..e1f584bf9e4e70556d07ba0f1d65b87ba008495a 100644
--- a/source/blender/editors/gizmo_library/gizmo_types/dial3d_gizmo.c
+++ b/source/blender/editors/gizmo_library/gizmo_types/dial3d_gizmo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_types/move3d_gizmo.c b/source/blender/editors/gizmo_library/gizmo_types/move3d_gizmo.c
index ec4837aec3cbbc4beb00fe2e7e6b90b81ee07f26..aea6d41202ed4f51f34556469b538803298b0ccf 100644
--- a/source/blender/editors/gizmo_library/gizmo_types/move3d_gizmo.c
+++ b/source/blender/editors/gizmo_library/gizmo_types/move3d_gizmo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_types/primitive3d_gizmo.c b/source/blender/editors/gizmo_library/gizmo_types/primitive3d_gizmo.c
index 7e6a728ee80ace93c75c9ca705161a739e891352..257e5fbf9e715b9e166629a82fe6192cc49143f2 100644
--- a/source/blender/editors/gizmo_library/gizmo_types/primitive3d_gizmo.c
+++ b/source/blender/editors/gizmo_library/gizmo_types/primitive3d_gizmo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gizmo_library/gizmo_types/snap3d_gizmo.c b/source/blender/editors/gizmo_library/gizmo_types/snap3d_gizmo.c
index b618aa41f4c33a927fe06f6b82a40112ed58b5b0..f8e9452741fc75e7189243690a3a154c7e079397 100644
--- a/source/blender/editors/gizmo_library/gizmo_types/snap3d_gizmo.c
+++ b/source/blender/editors/gizmo_library/gizmo_types/snap3d_gizmo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgizmolib
diff --git a/source/blender/editors/gpencil/CMakeLists.txt b/source/blender/editors/gpencil/CMakeLists.txt
index 93d17598181d2946bad24ae029d8ac0e5d3c816e..38233f5af09955c18e453d2d4086a48ea41c1d6a 100644
--- a/source/blender/editors/gpencil/CMakeLists.txt
+++ b/source/blender/editors/gpencil/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/gpencil/annotate_draw.c b/source/blender/editors/gpencil/annotate_draw.c
index ae00fc41f4024a2f22d30857ab9d751bbae9d670..f175145fca7500aebdbf4868125237ad570c1c88 100644
--- a/source/blender/editors/gpencil/annotate_draw.c
+++ b/source/blender/editors/gpencil/annotate_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/annotate_paint.c b/source/blender/editors/gpencil/annotate_paint.c
index 042fe5d3806ba0a9d33da0ce0919284ab2fce613..163b565732611d7c0b95e6c81e230251ec77e8ca 100644
--- a/source/blender/editors/gpencil/annotate_paint.c
+++ b/source/blender/editors/gpencil/annotate_paint.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008-2018, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008-2018 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/drawgpencil.c b/source/blender/editors/gpencil/drawgpencil.c
index 23b579b94f1496a0f2ac87495f51a7ceaaabc7b8..011a5a66695cc09038e4fb8b79c916a3038ab79d 100644
--- a/source/blender/editors/gpencil/drawgpencil.c
+++ b/source/blender/editors/gpencil/drawgpencil.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/editaction_gpencil.c b/source/blender/editors/gpencil/editaction_gpencil.c
index 3cc47198cbcdb9228b5411f02cde5918ebb610ce..949043e4be15790d7e0c5f2992ee9f5afe4e82d1 100644
--- a/source/blender/editors/gpencil/editaction_gpencil.c
+++ b/source/blender/editors/gpencil/editaction_gpencil.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_add_blank.c b/source/blender/editors/gpencil/gpencil_add_blank.c
index 4e4650e575c965f272c3950bb84668fe1c17bd67..2f22fad53e77298e528d98b0170e17101bb39dea 100644
--- a/source/blender/editors/gpencil/gpencil_add_blank.c
+++ b/source/blender/editors/gpencil/gpencil_add_blank.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_add_lineart.c b/source/blender/editors/gpencil/gpencil_add_lineart.c
index aad2d978bfb375bb56a87b81c0bf074b0d6f80a2..964a57a8ced14f44ff4f6995e53d9cc3a17f05d1 100644
--- a/source/blender/editors/gpencil/gpencil_add_lineart.c
+++ b/source/blender/editors/gpencil/gpencil_add_lineart.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_add_monkey.c b/source/blender/editors/gpencil/gpencil_add_monkey.c
index 3b952dbe7da875a5806bf787f3c1b0f4ca18b669..65ee732f6a9c7b8fea5e58509afbbd5ab2442b86 100644
--- a/source/blender/editors/gpencil/gpencil_add_monkey.c
+++ b/source/blender/editors/gpencil/gpencil_add_monkey.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_add_stroke.c b/source/blender/editors/gpencil/gpencil_add_stroke.c
index d9e652392b4e2fd3d2a3808c3c563abc7da61da4..bc5fe9b5cfb4f9a330920dddaba2cc73dfe902da 100644
--- a/source/blender/editors/gpencil/gpencil_add_stroke.c
+++ b/source/blender/editors/gpencil/gpencil_add_stroke.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_armature.c b/source/blender/editors/gpencil/gpencil_armature.c
index 86ec6c53fe6cdfd6f18e06d29b66b7be0071f4da..39bfc287b434afbbc8a798312d3448788c2b45a1 100644
--- a/source/blender/editors/gpencil/gpencil_armature.c
+++ b/source/blender/editors/gpencil/gpencil_armature.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_bake_animation.c b/source/blender/editors/gpencil/gpencil_bake_animation.c
index 4467e6202b44bc69600b407fcf0b3d6160f7a8dd..5d33377900f7b9a8fbb02de048d9a86dfa0f7fd1 100644
--- a/source/blender/editors/gpencil/gpencil_bake_animation.c
+++ b/source/blender/editors/gpencil/gpencil_bake_animation.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_convert.c b/source/blender/editors/gpencil/gpencil_convert.c
index 8e7a0083ded2baa85a4de45c6ff0533e3bc9b1a4..63239fd6341efd0e2b5fa4f4a1a8526a8352a8d3 100644
--- a/source/blender/editors/gpencil/gpencil_convert.c
+++ b/source/blender/editors/gpencil/gpencil_convert.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_data.c b/source/blender/editors/gpencil/gpencil_data.c
index 916aa8184aa3d01a63dcfd55d1a8ea49a7e38acc..338a7c8a51d8511ebd024f5601c9fe27cefe54ad 100644
--- a/source/blender/editors/gpencil/gpencil_data.c
+++ b/source/blender/editors/gpencil/gpencil_data.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_edit.c b/source/blender/editors/gpencil/gpencil_edit.c
index dda36cf78d9d01c01e808437f9dedb4f99186291..680b313c47bc32150902b6288abfccb58a99fb4a 100644
--- a/source/blender/editors/gpencil/gpencil_edit.c
+++ b/source/blender/editors/gpencil/gpencil_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_edit_curve.c b/source/blender/editors/gpencil/gpencil_edit_curve.c
index 5002623fbb17921d191bf881e5d1d36463438a14..b669168aea767621bcb9bf8f188e3aac726737d2 100644
--- a/source/blender/editors/gpencil/gpencil_edit_curve.c
+++ b/source/blender/editors/gpencil/gpencil_edit_curve.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_fill.c b/source/blender/editors/gpencil/gpencil_fill.c
index 541b6673cb6f8fba5cba54e15daa06da1d7e2563..5eca3a4eb6c22aa13d917d8c817de18df4d7b3d6 100644
--- a/source/blender/editors/gpencil/gpencil_fill.c
+++ b/source/blender/editors/gpencil/gpencil_fill.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_intern.h b/source/blender/editors/gpencil/gpencil_intern.h
index 0802b80606079e43354fb77a3d3411e16e1f0054..1bb98ce51c7cd68377701748dfc436a7b9ae5375 100644
--- a/source/blender/editors/gpencil/gpencil_intern.h
+++ b/source/blender/editors/gpencil/gpencil_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_interpolate.c b/source/blender/editors/gpencil/gpencil_interpolate.c
index 2d88461fb1532e0306291907369b90b1335d2215..4072286294971e2118e9cb418dfb42fc251dfd4a 100644
--- a/source/blender/editors/gpencil/gpencil_interpolate.c
+++ b/source/blender/editors/gpencil/gpencil_interpolate.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_merge.c b/source/blender/editors/gpencil/gpencil_merge.c
index 884167d749661d368cffa9df5f59aabd6b8ad4f7..06343dcad4304d7a2902662febdbdaf59e35fda7 100644
--- a/source/blender/editors/gpencil/gpencil_merge.c
+++ b/source/blender/editors/gpencil/gpencil_merge.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019, Blender Foundation.
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_mesh.c b/source/blender/editors/gpencil/gpencil_mesh.c
index adf76e79c2a3c35f214d83fdb9ad755b7528c608..7db55796053797686c0c3e503dc2572a1d7a7779 100644
--- a/source/blender/editors/gpencil/gpencil_mesh.c
+++ b/source/blender/editors/gpencil/gpencil_mesh.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_ops.c b/source/blender/editors/gpencil/gpencil_ops.c
index 8c78a402e81d39ea4f5603b4003912757a6e2d10..99e28270c3e91974300d45f8b7c80c70c1bdcdf0 100644
--- a/source/blender/editors/gpencil/gpencil_ops.c
+++ b/source/blender/editors/gpencil/gpencil_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_ops_versioning.c b/source/blender/editors/gpencil/gpencil_ops_versioning.c
index d9706c281ca6101c83e6e8af5c450ef3fc4a591f..8119646137c0d113530c85dd92f22b5a7d5a79f1 100644
--- a/source/blender/editors/gpencil/gpencil_ops_versioning.c
+++ b/source/blender/editors/gpencil/gpencil_ops_versioning.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018, Blender Foundation,
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_paint.c b/source/blender/editors/gpencil/gpencil_paint.c
index 082deab823b1c00fa2257754cc9d01ed817689e1..a6691a12505e58a4703f3867ac0745a7a0450a6a 100644
--- a/source/blender/editors/gpencil/gpencil_paint.c
+++ b/source/blender/editors/gpencil/gpencil_paint.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_primitive.c b/source/blender/editors/gpencil/gpencil_primitive.c
index fa31dfffbc15dc034e50ab662a049e96b8b0a61c..2d761dd6c9197c628cfee9becd3c4aabc6c2c859 100644
--- a/source/blender/editors/gpencil/gpencil_primitive.c
+++ b/source/blender/editors/gpencil/gpencil_primitive.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_sculpt_paint.c b/source/blender/editors/gpencil/gpencil_sculpt_paint.c
index 66b7f260f28b76ccc45320aeeb104df5a31b9b1f..3f17fbf2bc370a62e390b6d1f723ffa3265fa275 100644
--- a/source/blender/editors/gpencil/gpencil_sculpt_paint.c
+++ b/source/blender/editors/gpencil/gpencil_sculpt_paint.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_select.c b/source/blender/editors/gpencil/gpencil_select.c
index ed8d2996b6a3c65269ef2e60e31f4b178e1f2b31..da263d44fc65b2e03f2918a46c891c2179bc31c0 100644
--- a/source/blender/editors/gpencil/gpencil_select.c
+++ b/source/blender/editors/gpencil/gpencil_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_trace.h b/source/blender/editors/gpencil/gpencil_trace.h
index 77fb823b3b6e9281fd40402a97a04b47de437684..9e79e83b7b637344b2776727bc9e3c731c7051ed 100644
--- a/source/blender/editors/gpencil/gpencil_trace.h
+++ b/source/blender/editors/gpencil/gpencil_trace.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_trace_ops.c b/source/blender/editors/gpencil/gpencil_trace_ops.c
index cd75f9313ad90fa0aa8be158d4581bb90e741a30..24a0dab24c99f872f1d0bc204fa1c28ea8eee9c4 100644
--- a/source/blender/editors/gpencil/gpencil_trace_ops.c
+++ b/source/blender/editors/gpencil/gpencil_trace_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_trace_utils.c b/source/blender/editors/gpencil/gpencil_trace_utils.c
index f5690904fcfead59020d146cb1ea5e7e54368268..10be8c3e91edabf07bbc277d0b9ef24ece7a07ae 100644
--- a/source/blender/editors/gpencil/gpencil_trace_utils.c
+++ b/source/blender/editors/gpencil/gpencil_trace_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_undo.c b/source/blender/editors/gpencil/gpencil_undo.c
index ec70febc80ca29ac7a65f238aa26e4d91596799c..d63998526039ee4060182d6ab12066d466498efd 100644
--- a/source/blender/editors/gpencil/gpencil_undo.c
+++ b/source/blender/editors/gpencil/gpencil_undo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_utils.c b/source/blender/editors/gpencil/gpencil_utils.c
index 81a844cf6e19f4beac63d096d6647066adac0916..c0777ac31056a7931f0796ffe9c2c5b96a90a70e 100644
--- a/source/blender/editors/gpencil/gpencil_utils.c
+++ b/source/blender/editors/gpencil/gpencil_utils.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014, Blender Foundation
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_uv.c b/source/blender/editors/gpencil/gpencil_uv.c
index 6bd0540a9d48445f33eb95d81f667eb08ba84f85..51cb08cf5927b6db9da9415cd4f473573f8a638a 100644
--- a/source/blender/editors/gpencil/gpencil_uv.c
+++ b/source/blender/editors/gpencil/gpencil_uv.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_vertex_ops.c b/source/blender/editors/gpencil/gpencil_vertex_ops.c
index d9f4cc87afc8c1cc4b715302ab344be117f705dd..f49523925bcd44a69c94ccfabc04e064c570eee6 100644
--- a/source/blender/editors/gpencil/gpencil_vertex_ops.c
+++ b/source/blender/editors/gpencil/gpencil_vertex_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_vertex_paint.c b/source/blender/editors/gpencil/gpencil_vertex_paint.c
index 2c16894354e21d852fc1b43128476778ffaea6b3..1d1b00e3f088b9e548a1c821b0758411e778f039 100644
--- a/source/blender/editors/gpencil/gpencil_vertex_paint.c
+++ b/source/blender/editors/gpencil/gpencil_vertex_paint.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/gpencil/gpencil_weight_paint.c b/source/blender/editors/gpencil/gpencil_weight_paint.c
index fe4ab648581e6407dc6618c39f1a970e337b10bd..8fe4cba7021419f031e1f5d7a543fed5aa5e786f 100644
--- a/source/blender/editors/gpencil/gpencil_weight_paint.c
+++ b/source/blender/editors/gpencil/gpencil_weight_paint.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. */
 
 /** \file
  * \ingroup edgpencil
diff --git a/source/blender/editors/include/BIF_glutil.h b/source/blender/editors/include/BIF_glutil.h
index 61dd0adc84dd40e4d49ad69cd0efea4bb081fe7b..3f1b8d6ecdaf802f366f326b8b8c8a06a2ebf019 100644
--- a/source/blender/editors/include/BIF_glutil.h
+++ b/source/blender/editors/include/BIF_glutil.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup editorui
diff --git a/source/blender/editors/include/ED_anim_api.h b/source/blender/editors/include/ED_anim_api.h
index 04a892ab411b34cb4875703b5b48af01b7ebe820..e6a68f7fab7fd4753ba5ae7449129f40faaa57cb 100644
--- a/source/blender/editors/include/ED_anim_api.h
+++ b/source/blender/editors/include/ED_anim_api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_armature.h b/source/blender/editors/include/ED_armature.h
index 0521b39ca1af57c27435808bb0dc1890ce174be7..2f5f82e332c2e2a04fa89dc3b0bdfa72a2bf4442 100644
--- a/source/blender/editors/include/ED_armature.h
+++ b/source/blender/editors/include/ED_armature.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_asset.h b/source/blender/editors/include/ED_asset.h
index 3b1d87e8ff7117ecacf4c39d6d7de3448191032a..d7e7880e1140e3093f59bd0f3cdfd447358f8987 100644
--- a/source/blender/editors/include/ED_asset.h
+++ b/source/blender/editors/include/ED_asset.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_buttons.h b/source/blender/editors/include/ED_buttons.h
index c3479c10d585564bc2acd8e12eac6ec5e31eb86f..c96db25f069e4deb0c03496df86e56c290f4e622 100644
--- a/source/blender/editors/include/ED_buttons.h
+++ b/source/blender/editors/include/ED_buttons.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013, Blender Foundation
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_clip.h b/source/blender/editors/include/ED_clip.h
index 6167ae3aee6ce51694fcf1536df1a273945d72bc..2c67b02611b328808b781e6d4c563cb03964f1fd 100644
--- a/source/blender/editors/include/ED_clip.h
+++ b/source/blender/editors/include/ED_clip.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_curve.h b/source/blender/editors/include/ED_curve.h
index a9225a5db6026bd7378491049fc8443eda994cc5..c97f97a2ddcbf3990e6246ca7cbbee92edd34d9e 100644
--- a/source/blender/editors/include/ED_curve.h
+++ b/source/blender/editors/include/ED_curve.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_datafiles.h b/source/blender/editors/include/ED_datafiles.h
index 59e0e0149335139d932c1f283c04eefab491a270..c3a66e4a7dde7b0fd4899e0d89d3235420da5e12 100644
--- a/source/blender/editors/include/ED_datafiles.h
+++ b/source/blender/editors/include/ED_datafiles.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_file_indexer.h b/source/blender/editors/include/ED_file_indexer.h
index 3b19a738b901dca0a8fda3652fb0087e1643dce0..c07196c9fd7e2088100fcf9320e710570467294b 100644
--- a/source/blender/editors/include/ED_file_indexer.h
+++ b/source/blender/editors/include/ED_file_indexer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edfile
diff --git a/source/blender/editors/include/ED_fileselect.h b/source/blender/editors/include/ED_fileselect.h
index 0528057fb54c60152fa871bb10e263c8b4678321..e45779b8a2698146fca4a96f0c59cb2cfe96fbb1 100644
--- a/source/blender/editors/include/ED_fileselect.h
+++ b/source/blender/editors/include/ED_fileselect.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_geometry.h b/source/blender/editors/include/ED_geometry.h
index d74fd15aaa75e6894386610ec155a1c03dd2214e..74ff968828cad59fd939e79bdfcfca67b3e0d942 100644
--- a/source/blender/editors/include/ED_geometry.h
+++ b/source/blender/editors/include/ED_geometry.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_gizmo_library.h b/source/blender/editors/include/ED_gizmo_library.h
index 8d4177faa0cb3650607c88866405078defa9d6c7..33d8dc53897da114388bce17d67b14f4c25450f4 100644
--- a/source/blender/editors/include/ED_gizmo_library.h
+++ b/source/blender/editors/include/ED_gizmo_library.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/editors/include/ED_gizmo_utils.h b/source/blender/editors/include/ED_gizmo_utils.h
index 0cfc3df9d54d40d24e2e218e97ae07ff67991633..8d97d61c51bec24a964dc5d74d1d8b8d30441a1b 100644
--- a/source/blender/editors/include/ED_gizmo_utils.h
+++ b/source/blender/editors/include/ED_gizmo_utils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_gpencil.h b/source/blender/editors/include/ED_gpencil.h
index 919ea3e4a6be99947b245afb5d1f1544a1a885ec..01f60a812883b5fe81830dd4350fa34be798b412 100644
--- a/source/blender/editors/include/ED_gpencil.h
+++ b/source/blender/editors/include/ED_gpencil.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_image.h b/source/blender/editors/include/ED_image.h
index 3c1b8e4ecc1196eb9733b35fdad1844438753e3f..d6b82c7171d59aed152d8652b030bda50a27b39b 100644
--- a/source/blender/editors/include/ED_image.h
+++ b/source/blender/editors/include/ED_image.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_info.h b/source/blender/editors/include/ED_info.h
index caf76841bcd2c06f51262456d43847d29c3d4e13..e0c4fea32e39469aa1c59d72eeadc698f8af9b7f 100644
--- a/source/blender/editors/include/ED_info.h
+++ b/source/blender/editors/include/ED_info.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009, Blender Foundation
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_keyframes_draw.h b/source/blender/editors/include/ED_keyframes_draw.h
index 6a7037c3eed8562b53993781583831adab406e0a..ffc66e075a03ba9e6bdb2301500fc5c87428cb00 100644
--- a/source/blender/editors/include/ED_keyframes_draw.h
+++ b/source/blender/editors/include/ED_keyframes_draw.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_keyframes_edit.h b/source/blender/editors/include/ED_keyframes_edit.h
index f006378658b7106f53a7e380114fd2438b5eb895..90e8dbad272b1c2f450c3ca3ee78c6af94e3bf43 100644
--- a/source/blender/editors/include/ED_keyframes_edit.h
+++ b/source/blender/editors/include/ED_keyframes_edit.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_keyframes_keylist.h b/source/blender/editors/include/ED_keyframes_keylist.h
index 36a30bd5ee6ef57bdd0cfb41c2bad4fe618be6cd..6a8820d00830aa6613d5ee43c19bf7c3ef80bf73 100644
--- a/source/blender/editors/include/ED_keyframes_keylist.h
+++ b/source/blender/editors/include/ED_keyframes_keylist.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_keyframing.h b/source/blender/editors/include/ED_keyframing.h
index 22a6bdb27ba62cfd7c1750ee3d4bed9baabdf460..6a730225da9a8265c112cafc9d21d103dcbe32c0 100644
--- a/source/blender/editors/include/ED_keyframing.h
+++ b/source/blender/editors/include/ED_keyframing.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_lattice.h b/source/blender/editors/include/ED_lattice.h
index 3d779fd14ef358a6d8dbbb421eb2dde0388e268e..eddf69e1cb6434a6910ecada026fd687ad7ba990 100644
--- a/source/blender/editors/include/ED_lattice.h
+++ b/source/blender/editors/include/ED_lattice.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_markers.h b/source/blender/editors/include/ED_markers.h
index 8e6961ffd6f88551a70a17198c5ee9f81dc68f84..e8dc83f597f8b216443abc02ab53588c2ffc4213 100644
--- a/source/blender/editors/include/ED_markers.h
+++ b/source/blender/editors/include/ED_markers.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_mask.h b/source/blender/editors/include/ED_mask.h
index 1a4c36acff9f1362cb3732578d951be2e34bcb45..bc01f76f20da45208efb3b14826566336bf82c23 100644
--- a/source/blender/editors/include/ED_mask.h
+++ b/source/blender/editors/include/ED_mask.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_mball.h b/source/blender/editors/include/ED_mball.h
index 1afd7f06a5a8f4c3ca7351112266afec26e07e2a..e0c921ea0dbb203da97e4d823249ad432cd45a06 100644
--- a/source/blender/editors/include/ED_mball.h
+++ b/source/blender/editors/include/ED_mball.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_mesh.h b/source/blender/editors/include/ED_mesh.h
index 0721aa21a16069d92c4bb93f7cf7ef13e87def5a..68e46dfa0e55a0db89c12bdfcd1d69fd8ef8983e 100644
--- a/source/blender/editors/include/ED_mesh.h
+++ b/source/blender/editors/include/ED_mesh.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_node.h b/source/blender/editors/include/ED_node.h
index 08f4648d02baa9dd09c02e99b36423d24c24de4f..8c9fa7e4494342a70beac0218b42408ed48d3e74 100644
--- a/source/blender/editors/include/ED_node.h
+++ b/source/blender/editors/include/ED_node.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_numinput.h b/source/blender/editors/include/ED_numinput.h
index 9fd77fa858e53a64e5e3f8f115c997a7ea8d4197..77c3794b6fcb7ce3f1eaeca77b59a1e3959f73e1 100644
--- a/source/blender/editors/include/ED_numinput.h
+++ b/source/blender/editors/include/ED_numinput.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_object.h b/source/blender/editors/include/ED_object.h
index 805b48d9195af68d59f796566f0f69dff72a3df6..53d6d88f5b9588111636dafa92b42918869c4fe2 100644
--- a/source/blender/editors/include/ED_object.h
+++ b/source/blender/editors/include/ED_object.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_outliner.h b/source/blender/editors/include/ED_outliner.h
index 99f65010595aa6e880064ec55c90c41c1d0e2154..0b7494edca769de27c388445d66b9dc9365ca805 100644
--- a/source/blender/editors/include/ED_outliner.h
+++ b/source/blender/editors/include/ED_outliner.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015, Blender Foundation
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_paint.h b/source/blender/editors/include/ED_paint.h
index 1d1ba264de52811a62c0d3db3d96f298900d92b7..ca3b232f51c856be72761f5bedac9350024e5933 100644
--- a/source/blender/editors/include/ED_paint.h
+++ b/source/blender/editors/include/ED_paint.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_particle.h b/source/blender/editors/include/ED_particle.h
index 9671f5b2b09dd2de8dd375e24e07e5449c6b968b..a4797ff167cc40259e495e37e122276647b69ebb 100644
--- a/source/blender/editors/include/ED_particle.h
+++ b/source/blender/editors/include/ED_particle.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 by Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_physics.h b/source/blender/editors/include/ED_physics.h
index f9c56f31ebdb40bbf80bcdc8973073521830b67f..178b85ec22cdf03612d90b54a06e667586f763f4 100644
--- a/source/blender/editors/include/ED_physics.h
+++ b/source/blender/editors/include/ED_physics.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 by Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_render.h b/source/blender/editors/include/ED_render.h
index dabf8fb838b3519f3e49a86584b3f8cf7fff1d2a..e1b6a935d6d6d10a1f320401b39b82723dae6418 100644
--- a/source/blender/editors/include/ED_render.h
+++ b/source/blender/editors/include/ED_render.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_scene.h b/source/blender/editors/include/ED_scene.h
index e4e7a4bdfce75f7c69a0629afc8245a4babdd74d..f1a2e5795eeed49dc6c4cbe5280a17b614f7e7f7 100644
--- a/source/blender/editors/include/ED_scene.h
+++ b/source/blender/editors/include/ED_scene.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_screen.h b/source/blender/editors/include/ED_screen.h
index 651ae1de8be700edd27ccfaeaf15327816924579..5b439cb0978ceff25f7971e7ac5deb1f257f6bbe 100644
--- a/source/blender/editors/include/ED_screen.h
+++ b/source/blender/editors/include/ED_screen.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_screen_types.h b/source/blender/editors/include/ED_screen_types.h
index 0185de426f3ed1c4aab273e3738a275efa7f639e..86fb5251ff3135a93e4e13f05175cf732cd11a6c 100644
--- a/source/blender/editors/include/ED_screen_types.h
+++ b/source/blender/editors/include/ED_screen_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_sculpt.h b/source/blender/editors/include/ED_sculpt.h
index 7c1124d705f4298f30045d03d7ee62aa1a9ce7fb..3100c135db4fbd612c0b768af11abdc40007eb61 100644
--- a/source/blender/editors/include/ED_sculpt.h
+++ b/source/blender/editors/include/ED_sculpt.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_select_utils.h b/source/blender/editors/include/ED_select_utils.h
index 295268c77196c98177681cc67dc2fb470d2e531d..26d8d0a3d8c5b07a43ab4116195fa4fba2350139 100644
--- a/source/blender/editors/include/ED_select_utils.h
+++ b/source/blender/editors/include/ED_select_utils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_sequencer.h b/source/blender/editors/include/ED_sequencer.h
index 843b94cea003cb89217e500f95fc002670be1a99..fe402b91b9c7cf50f21f591da9d45039cf9ee79e 100644
--- a/source/blender/editors/include/ED_sequencer.h
+++ b/source/blender/editors/include/ED_sequencer.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009, Blender Foundation
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_sound.h b/source/blender/editors/include/ED_sound.h
index 022c7784ed3dbb39304214e9bfbc2b161bf91fb4..1d46305f413c425209dcafc1600a36b27c2bed90 100644
--- a/source/blender/editors/include/ED_sound.h
+++ b/source/blender/editors/include/ED_sound.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_space_api.h b/source/blender/editors/include/ED_space_api.h
index fb76b36baef66ef8df450d1d2e2d41d03db06746..fd4a28240fa54a5dbee3627732afc31d9a5e1d8f 100644
--- a/source/blender/editors/include/ED_space_api.h
+++ b/source/blender/editors/include/ED_space_api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_spreadsheet.h b/source/blender/editors/include/ED_spreadsheet.h
index dfa8aa7bfbcfd1e8ddaa9e2ed5536898f982347a..da13e6d36368dbbe0be9bb27a1fe2f504cdf2668 100644
--- a/source/blender/editors/include/ED_spreadsheet.h
+++ b/source/blender/editors/include/ED_spreadsheet.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/include/ED_text.h b/source/blender/editors/include/ED_text.h
index 33ca3ea03a6318bc90fddf0d9da9d01ebf42a461..004f1e562d78780ef6de4d43d52f9eec6ca1d8c2 100644
--- a/source/blender/editors/include/ED_text.h
+++ b/source/blender/editors/include/ED_text.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_time_scrub_ui.h b/source/blender/editors/include/ED_time_scrub_ui.h
index 812cb31c9b0e8c1ec356846b2cf6fcb30c47031a..596fdd87afcb6eb6ff839c22360b66650df5afea 100644
--- a/source/blender/editors/include/ED_time_scrub_ui.h
+++ b/source/blender/editors/include/ED_time_scrub_ui.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_transform.h b/source/blender/editors/include/ED_transform.h
index 573f9b4939bef72fa0cf87d9d2a656b073a4da61..66c17ff811592df67d072bbdbd857d5403ab5f11 100644
--- a/source/blender/editors/include/ED_transform.h
+++ b/source/blender/editors/include/ED_transform.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_transform_snap_object_context.h b/source/blender/editors/include/ED_transform_snap_object_context.h
index fd65d8f3663a46a5bdb2e1b473f8dbcce8de4b3c..fa53e7a76e42bb7dde4fa8531f5872459f666059 100644
--- a/source/blender/editors/include/ED_transform_snap_object_context.h
+++ b/source/blender/editors/include/ED_transform_snap_object_context.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_transverts.h b/source/blender/editors/include/ED_transverts.h
index dbf156d480fc18d039a2ca8d103c801059a9424c..e63734226170786c6bdfc782bbc55f92f6e0a77c 100644
--- a/source/blender/editors/include/ED_transverts.h
+++ b/source/blender/editors/include/ED_transverts.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_types.h b/source/blender/editors/include/ED_types.h
index ab9098a33c5dad085051fc00afa3721571e1a251..eba93ed67448a89c92881a08e40aec186f1a60c0 100644
--- a/source/blender/editors/include/ED_types.h
+++ b/source/blender/editors/include/ED_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_undo.h b/source/blender/editors/include/ED_undo.h
index dceecc6aab59ec5d4d68cc7145627420c0b60069..c5a94a3629b15c616d87502e787dade10fac77a1 100644
--- a/source/blender/editors/include/ED_undo.h
+++ b/source/blender/editors/include/ED_undo.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_userpref.h b/source/blender/editors/include/ED_userpref.h
index e588fa31ad53dbb9080005514dc1ddd2587ce0f0..3850a066ac3479c2da5ef0f54c64a65cfffbaf06 100644
--- a/source/blender/editors/include/ED_userpref.h
+++ b/source/blender/editors/include/ED_userpref.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_util.h b/source/blender/editors/include/ED_util.h
index 6d9691d96f4d19fe4b6c8b4e29c447dd0a4fc2ec..87d5adda213d51e110b4aa7f97ae51ad436d7056 100644
--- a/source/blender/editors/include/ED_util.h
+++ b/source/blender/editors/include/ED_util.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_util_imbuf.h b/source/blender/editors/include/ED_util_imbuf.h
index 4bbaa68e849f6ee89918e96cf890ea04a11a5f13..112c3f3a363ba09212ca94a128a216c43042ca8f 100644
--- a/source/blender/editors/include/ED_util_imbuf.h
+++ b/source/blender/editors/include/ED_util_imbuf.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_uvedit.h b/source/blender/editors/include/ED_uvedit.h
index 0af98fc367f64abe339759b25c61fdf2f3ea8f10..0c9ddc975087ce1b50a50fb0a3487d37c21bbaa5 100644
--- a/source/blender/editors/include/ED_uvedit.h
+++ b/source/blender/editors/include/ED_uvedit.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_view3d.h b/source/blender/editors/include/ED_view3d.h
index 3bbffc3b7c9ec443d233c1a36cee24ff821693c2..46c9a1973ebb333a1af0f520f57be4959c1a533a 100644
--- a/source/blender/editors/include/ED_view3d.h
+++ b/source/blender/editors/include/ED_view3d.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/ED_view3d_offscreen.h b/source/blender/editors/include/ED_view3d_offscreen.h
index ae2329c457b0a5278f687cf24ba157e270dab061..097308066f38345f19acd753368ecee16270ad97 100644
--- a/source/blender/editors/include/ED_view3d_offscreen.h
+++ b/source/blender/editors/include/ED_view3d_offscreen.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/include/UI_icons.h b/source/blender/editors/include/UI_icons.h
index 05353de2f9272432a83014e1df8cfced701cf575..a560208ac1ef5d57c260ba2af94557dd04ac5da3 100644
--- a/source/blender/editors/include/UI_icons.h
+++ b/source/blender/editors/include/UI_icons.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editorui
diff --git a/source/blender/editors/include/UI_interface.h b/source/blender/editors/include/UI_interface.h
index ae4c2ff16fd4ded3f16d7b84db1cc8b759a9c1a2..7bbc8249a97c09a57f80b8066d9f6c8fd97e748f 100644
--- a/source/blender/editors/include/UI_interface.h
+++ b/source/blender/editors/include/UI_interface.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup editorui
diff --git a/source/blender/editors/include/UI_interface.hh b/source/blender/editors/include/UI_interface.hh
index 8d1ca54b7a1530e7a2a50a45f43f5171fb3508dd..db43ec5443119decca3694e0647fa5b62e8085b0 100644
--- a/source/blender/editors/include/UI_interface.hh
+++ b/source/blender/editors/include/UI_interface.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editorui
diff --git a/source/blender/editors/include/UI_interface_icons.h b/source/blender/editors/include/UI_interface_icons.h
index ec80338b4c0d1c4121a020fb8b078a73d572b086..6416421f4f5cfcecb24c19a77542147ea00cf427 100644
--- a/source/blender/editors/include/UI_interface_icons.h
+++ b/source/blender/editors/include/UI_interface_icons.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup editorui
diff --git a/source/blender/editors/include/UI_resources.h b/source/blender/editors/include/UI_resources.h
index 40e4d8cee9cf0da372f02868bf39dc1751baea0c..22e747e37addf231eb0c465326275818a75dd37c 100644
--- a/source/blender/editors/include/UI_resources.h
+++ b/source/blender/editors/include/UI_resources.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup editorui
diff --git a/source/blender/editors/include/UI_tree_view.hh b/source/blender/editors/include/UI_tree_view.hh
index 8dee88defb3dfd56032c89227b7a21450bc767ff..5504e426f349640d0a1a40217e7d5413d7810110 100644
--- a/source/blender/editors/include/UI_tree_view.hh
+++ b/source/blender/editors/include/UI_tree_view.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editorui
diff --git a/source/blender/editors/include/UI_view2d.h b/source/blender/editors/include/UI_view2d.h
index 0a28b1cafe11ccdf53a50c348537eaada30af7db..b69d3008f1d8173555c0061ec1cd91e35c2f9ccd 100644
--- a/source/blender/editors/include/UI_view2d.h
+++ b/source/blender/editors/include/UI_view2d.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editorui
diff --git a/source/blender/editors/interface/CMakeLists.txt b/source/blender/editors/interface/CMakeLists.txt
index 95c9f7cc8b2cac341f4ece68f6036481354281b3..6033aaf9105404c87eb4d90b881d5535b6e1074d 100644
--- a/source/blender/editors/interface/CMakeLists.txt
+++ b/source/blender/editors/interface/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/interface/interface.c b/source/blender/editors/interface/interface.c
index 2292bf759b7012f6ea3fcec054e46cda545641a3..4819e8ed82c3ff3da97e66fd7286fceb53288830 100644
--- a/source/blender/editors/interface/interface.c
+++ b/source/blender/editors/interface/interface.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_align.c b/source/blender/editors/interface/interface_align.c
index 35af557a560689115a35d04d32220efbbeee6b8a..3b897e23e3583e5b614586a243c08cb03c840c55 100644
--- a/source/blender/editors/interface/interface_align.c
+++ b/source/blender/editors/interface/interface_align.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_anim.c b/source/blender/editors/interface/interface_anim.c
index 1d6623f3490b5a62dd5f66f90be3c87f9705cba9..46baf3033ff4adea7c22835b0560ed254f65486c 100644
--- a/source/blender/editors/interface/interface_anim.c
+++ b/source/blender/editors/interface/interface_anim.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_button_group.c b/source/blender/editors/interface/interface_button_group.c
index 6449e1eb329886d38ec26fa398b82349f42bb776..18a99f9b5d372c7181412b0ca5dad6572f7e5d12 100644
--- a/source/blender/editors/interface/interface_button_group.c
+++ b/source/blender/editors/interface/interface_button_group.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_context_menu.c b/source/blender/editors/interface/interface_context_menu.c
index dd5ce118d5f122f3b15cf448621d44af36f48703..34a20b91172b9a9097ae1b7bb17ef0704b22a29d 100644
--- a/source/blender/editors/interface/interface_context_menu.c
+++ b/source/blender/editors/interface/interface_context_menu.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_context_path.cc b/source/blender/editors/interface/interface_context_path.cc
index 0b774b79a5c5c70f8c1e3d28f888898b33533344..3b91ca79c00e91547efea62432b2f97819f4d1b4 100644
--- a/source/blender/editors/interface/interface_context_path.cc
+++ b/source/blender/editors/interface/interface_context_path.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_draw.c b/source/blender/editors/interface/interface_draw.c
index f7492e56b6202e62f75f00d29c8880351eeff650..23ae8915e93d1aa240c94d1256ff0185f96c1c53 100644
--- a/source/blender/editors/interface/interface_draw.c
+++ b/source/blender/editors/interface/interface_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_dropboxes.cc b/source/blender/editors/interface/interface_dropboxes.cc
index 369efa7c52ec0768566ab1a6d2d9ff3f7aef3d34..a24554ef68db1ba07204c76f25d7c5d0fbd3bc7e 100644
--- a/source/blender/editors/interface/interface_dropboxes.cc
+++ b/source/blender/editors/interface/interface_dropboxes.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_eyedropper.c b/source/blender/editors/interface/interface_eyedropper.c
index 6fa947303652a2ed151b2ab773d0b7d5b6a789d3..e72381821e8297622884046abfd43ad14aecf4f5 100644
--- a/source/blender/editors/interface/interface_eyedropper.c
+++ b/source/blender/editors/interface/interface_eyedropper.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_eyedropper_color.c b/source/blender/editors/interface/interface_eyedropper_color.c
index b5eed2534a3e375254b3a54d07f19124a8ab471b..cf3b1b48b62b459de28163f03b936c2798d37bcc 100644
--- a/source/blender/editors/interface/interface_eyedropper_color.c
+++ b/source/blender/editors/interface/interface_eyedropper_color.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_eyedropper_colorband.c b/source/blender/editors/interface/interface_eyedropper_colorband.c
index 05ed4ecf601f8780e17ed76872be66b93c1fbb78..8eb7dc24b83da5b0b82bf0094bc3bcb366441a6f 100644
--- a/source/blender/editors/interface/interface_eyedropper_colorband.c
+++ b/source/blender/editors/interface/interface_eyedropper_colorband.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_eyedropper_datablock.c b/source/blender/editors/interface/interface_eyedropper_datablock.c
index 812011101e8ce317f27bd1298d82e7a6bbfaf5be..aec8f56678a4a3ce5aa4baabd2dc344e7fa17324 100644
--- a/source/blender/editors/interface/interface_eyedropper_datablock.c
+++ b/source/blender/editors/interface/interface_eyedropper_datablock.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_eyedropper_depth.c b/source/blender/editors/interface/interface_eyedropper_depth.c
index b11001c4bf29154d251f7feaa350357aa9a5e870..2ec30a5e61cc33d3bea3516e00cc5cf4be985989 100644
--- a/source/blender/editors/interface/interface_eyedropper_depth.c
+++ b/source/blender/editors/interface/interface_eyedropper_depth.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_eyedropper_driver.c b/source/blender/editors/interface/interface_eyedropper_driver.c
index 6fe930b74d2aae5f0f14292824f7e95b409f3e4c..0cacb55c60cbbd7a00ccd36b29eea2d13f0bc39a 100644
--- a/source/blender/editors/interface/interface_eyedropper_driver.c
+++ b/source/blender/editors/interface/interface_eyedropper_driver.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_eyedropper_gpencil_color.c b/source/blender/editors/interface/interface_eyedropper_gpencil_color.c
index c1d49406818f1d24d309140bb1efa1b7bd4832c2..d6f529f9f946b4cb1099c95ec145c18ed8d65f4a 100644
--- a/source/blender/editors/interface/interface_eyedropper_gpencil_color.c
+++ b/source/blender/editors/interface/interface_eyedropper_gpencil_color.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_eyedropper_intern.h b/source/blender/editors/interface/interface_eyedropper_intern.h
index 335ee520791c279a20565b89fb157b4ece76080a..76316a85807a861bf7af5268b2171183ee0dba9e 100644
--- a/source/blender/editors/interface/interface_eyedropper_intern.h
+++ b/source/blender/editors/interface/interface_eyedropper_intern.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_handlers.c b/source/blender/editors/interface/interface_handlers.c
index a171160d020555b36f63d00d1db575a402b130ae..bbb6bfabdd1467cdf232b858be294f2897f3d0de 100644
--- a/source/blender/editors/interface/interface_handlers.c
+++ b/source/blender/editors/interface/interface_handlers.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_icons.c b/source/blender/editors/interface/interface_icons.c
index d7d3288a68dbbd8d69721f831dfeb7dd77466a93..e7e2706d5f9c7094d1a635769303ef72dfa03c74 100644
--- a/source/blender/editors/interface/interface_icons.c
+++ b/source/blender/editors/interface/interface_icons.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_icons_event.c b/source/blender/editors/interface/interface_icons_event.c
index 577db6a033812700912230fda48d5b245f02a855..00c1bcb5f6e7e7d45035444539128c3eae84e69c 100644
--- a/source/blender/editors/interface/interface_icons_event.c
+++ b/source/blender/editors/interface/interface_icons_event.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_intern.h b/source/blender/editors/interface/interface_intern.h
index 2d1138b46a7bf02a8a635fa697a22406202dfbe3..694ae78ca9e4cd3a6ed10c7cd62f9fe835db52c7 100644
--- a/source/blender/editors/interface/interface_intern.h
+++ b/source/blender/editors/interface/interface_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_layout.c b/source/blender/editors/interface/interface_layout.c
index 98fcb36b778cb7ecf9449b8d0fdcee2c54c6130d..54a5b496048fd6a7253a277c6c5ca6a426661714 100644
--- a/source/blender/editors/interface/interface_layout.c
+++ b/source/blender/editors/interface/interface_layout.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_ops.c b/source/blender/editors/interface/interface_ops.c
index 260e3dabc254e1aefe21af439abf41fb8379c210..a96f14d74357b1a471c6caf8fcdd21dea41b205b 100644
--- a/source/blender/editors/interface/interface_ops.c
+++ b/source/blender/editors/interface/interface_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_panel.c b/source/blender/editors/interface/interface_panel.c
index 135cef5fe53f03ea70029154ad34ed4883a227eb..2cb0f256b71ffc90e2f0842584d0e22f125a9504 100644
--- a/source/blender/editors/interface/interface_panel.c
+++ b/source/blender/editors/interface/interface_panel.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_query.c b/source/blender/editors/interface/interface_query.c
index b486ceb8dcab98610c52eec7184716c94b793a4d..8a945c8c91311daacd08758f431198a2831c0533 100644
--- a/source/blender/editors/interface/interface_query.c
+++ b/source/blender/editors/interface/interface_query.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_region_color_picker.c b/source/blender/editors/interface/interface_region_color_picker.c
index 2b167c56186f6c54c25a056ae642614094fcc946..9fb6f53819192804b3ecd23c9a6fd72c7f72b923 100644
--- a/source/blender/editors/interface/interface_region_color_picker.c
+++ b/source/blender/editors/interface/interface_region_color_picker.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_region_hud.c b/source/blender/editors/interface/interface_region_hud.c
index fc4ce6180c3d2e7a0bbd3a97a62ecc49c39362d6..4d72cd5382cbe3c0570462eb118bfc9f2b1ab6d6 100644
--- a/source/blender/editors/interface/interface_region_hud.c
+++ b/source/blender/editors/interface/interface_region_hud.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_region_menu_pie.c b/source/blender/editors/interface/interface_region_menu_pie.c
index 677da07d53dce98a50bf3105c920a6d9d94a937b..6a97c2f6fcb8bbf249b52c9f7e6cb2e9b256ca23 100644
--- a/source/blender/editors/interface/interface_region_menu_pie.c
+++ b/source/blender/editors/interface/interface_region_menu_pie.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_region_menu_popup.c b/source/blender/editors/interface/interface_region_menu_popup.c
index a8980b8b1223849c41d1a4209cdd73381cb592b3..7d8f43157101c53777a1242ff2c6f1d5b1dbb21d 100644
--- a/source/blender/editors/interface/interface_region_menu_popup.c
+++ b/source/blender/editors/interface/interface_region_menu_popup.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_region_popover.c b/source/blender/editors/interface/interface_region_popover.c
index 1bb589d99fb27076b7e41f5e139f7cda7cfffe33..7c7c9e887dd9ec93b996f7c0920003be1c39f1ea 100644
--- a/source/blender/editors/interface/interface_region_popover.c
+++ b/source/blender/editors/interface/interface_region_popover.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_region_popup.c b/source/blender/editors/interface/interface_region_popup.c
index 33ce47b281bcbb5557c9688a9af87a21bc4cdf11..c37d8ec7a2b59add24a4d9e066cbc60b5271cd61 100644
--- a/source/blender/editors/interface/interface_region_popup.c
+++ b/source/blender/editors/interface/interface_region_popup.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_region_search.cc b/source/blender/editors/interface/interface_region_search.cc
index e27dd2a7981aaa0e0f62ea63f385d039cadb92d8..bc497e2647c09182ef22df080040a28e34ff4d83 100644
--- a/source/blender/editors/interface/interface_region_search.cc
+++ b/source/blender/editors/interface/interface_region_search.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_region_tooltip.c b/source/blender/editors/interface/interface_region_tooltip.c
index fe58a6a05ae4b3290898f1aac42d0aa9d95b3a07..09faf493ce7845d3eaf9b9919326f3ed12480a29 100644
--- a/source/blender/editors/interface/interface_region_tooltip.c
+++ b/source/blender/editors/interface/interface_region_tooltip.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_regions.c b/source/blender/editors/interface/interface_regions.c
index 51b4e82d67984120379cf35a534b29ed76e1cef9..ea6d293e52fa1310801c5f581a9a892f280a32b8 100644
--- a/source/blender/editors/interface/interface_regions.c
+++ b/source/blender/editors/interface/interface_regions.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_regions_intern.h b/source/blender/editors/interface/interface_regions_intern.h
index ce93885252084e16a5565837c24522f9bfc76175..f296593c886f5832ee2441fbbdb8de53cc826f9b 100644
--- a/source/blender/editors/interface/interface_regions_intern.h
+++ b/source/blender/editors/interface/interface_regions_intern.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_style.c b/source/blender/editors/interface/interface_style.c
index bf3fa6e62d4d63980a701339ee3f25c52aaa03de..76023f3033f2e9dd488d5a22ac2f29086cffde28 100644
--- a/source/blender/editors/interface/interface_style.c
+++ b/source/blender/editors/interface/interface_style.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_template_asset_view.cc b/source/blender/editors/interface/interface_template_asset_view.cc
index 0a3cff5fa9805603d02a89801df4ac2cf26a844e..8e39b2b175af5f7d61def42de8158bdf5b3e2d19 100644
--- a/source/blender/editors/interface/interface_template_asset_view.cc
+++ b/source/blender/editors/interface/interface_template_asset_view.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_template_attribute_search.cc b/source/blender/editors/interface/interface_template_attribute_search.cc
index 6d4b7a37bff36c2782d774f814cd815f0f1c9963..384e9d1794ef5612cb7661e94f975d99638c572b 100644
--- a/source/blender/editors/interface/interface_template_attribute_search.cc
+++ b/source/blender/editors/interface/interface_template_attribute_search.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_template_list.cc b/source/blender/editors/interface/interface_template_list.cc
index 817599605a9cbecbb51d2d179109c17f71bd8699..40675da71a9b312d0fd5f55bb1565a05ce562c53 100644
--- a/source/blender/editors/interface/interface_template_list.cc
+++ b/source/blender/editors/interface/interface_template_list.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_template_search_menu.cc b/source/blender/editors/interface/interface_template_search_menu.cc
index 0ce3a0d8af1edaa4dcedd6b2fe66765896e268f3..160cc909036e9076d67c9eda87a239b315fc203f 100644
--- a/source/blender/editors/interface/interface_template_search_menu.cc
+++ b/source/blender/editors/interface/interface_template_search_menu.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_template_search_operator.c b/source/blender/editors/interface/interface_template_search_operator.c
index 2b765a1a2f5cc5b804460ed3427a9107319cdb69..4783a3f2ac60a164efca3af066896a3c35ed53c7 100644
--- a/source/blender/editors/interface/interface_template_search_operator.c
+++ b/source/blender/editors/interface/interface_template_search_operator.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_templates.c b/source/blender/editors/interface/interface_templates.c
index 03d0cba5ec8b2fdddcfa82d318892fcf1b59a1ca..9c9759aea7158b25c6ed3687ccbcc6a4d00b4ac8 100644
--- a/source/blender/editors/interface/interface_templates.c
+++ b/source/blender/editors/interface/interface_templates.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_undo.c b/source/blender/editors/interface/interface_undo.c
index 6916e1080b63d4d1d0a24b47f030a5ab80e75ab7..e998eb6dbed152b306f6256dca8d3f21476f2b61 100644
--- a/source/blender/editors/interface/interface_undo.c
+++ b/source/blender/editors/interface/interface_undo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_utils.c b/source/blender/editors/interface/interface_utils.c
index 84ec5f939d2b971e5724b46d68e4429109d75d8b..814bd9560967d80fa5ed538ff51758a429e719ab 100644
--- a/source/blender/editors/interface/interface_utils.c
+++ b/source/blender/editors/interface/interface_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_view.cc b/source/blender/editors/interface/interface_view.cc
index 81b24c7502089104afaf71b3cafbcfc02ad1db9e..85e1dbe73a5dd2025e980599ac39e8ad67683d32 100644
--- a/source/blender/editors/interface/interface_view.cc
+++ b/source/blender/editors/interface/interface_view.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/interface_widgets.c b/source/blender/editors/interface/interface_widgets.c
index b44496731f7fa774c40bb604dfe2fb25b3788a40..fbbf3c6fdf17d18dcf7156685995827b18030072 100644
--- a/source/blender/editors/interface/interface_widgets.c
+++ b/source/blender/editors/interface/interface_widgets.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/resources.c b/source/blender/editors/interface/resources.c
index 3b511e233842691e5212956f583e347109127dbd..cfdcd08df4ad5f6db45bbf17290496aa65d5e5ce 100644
--- a/source/blender/editors/interface/resources.c
+++ b/source/blender/editors/interface/resources.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/tree_view.cc b/source/blender/editors/interface/tree_view.cc
index 3010aaba5a3d695026904b0300f1724c12a4ce75..bf756fb58380a4fedac313efd3c384358f098954 100644
--- a/source/blender/editors/interface/tree_view.cc
+++ b/source/blender/editors/interface/tree_view.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/view2d.c b/source/blender/editors/interface/view2d.c
index b530693a7e59e144c49350d73f6812da4cf82285..8962e1462b62d231a03b60438c2d9dc1dd0ac705 100644
--- a/source/blender/editors/interface/view2d.c
+++ b/source/blender/editors/interface/view2d.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/view2d_draw.c b/source/blender/editors/interface/view2d_draw.c
index b1869fbf2f9724631a6d027c09c0a46bfe212971..600aa3b522b56615f93a295b4d91844f4357f9fa 100644
--- a/source/blender/editors/interface/view2d_draw.c
+++ b/source/blender/editors/interface/view2d_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/view2d_edge_pan.c b/source/blender/editors/interface/view2d_edge_pan.c
index 8d8b9a4fe48abf24583820b6371d880dea136b4c..1f54fd6f669396a3660819c92735c86611289473 100644
--- a/source/blender/editors/interface/view2d_edge_pan.c
+++ b/source/blender/editors/interface/view2d_edge_pan.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/interface/view2d_gizmo_navigate.c b/source/blender/editors/interface/view2d_gizmo_navigate.c
index 2497081b412e783fa988b2c593dfcbb2f5ef4f26..bc7d21270e886089cbe5a4240788d995f32cbcdb 100644
--- a/source/blender/editors/interface/view2d_gizmo_navigate.c
+++ b/source/blender/editors/interface/view2d_gizmo_navigate.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/interface/view2d_ops.c b/source/blender/editors/interface/view2d_ops.c
index 0d3c427bf3994d42f8d63d828172d10989ff4b7b..09d57d3ea992ad91d96a9dd70bade9c989c6a444 100644
--- a/source/blender/editors/interface/view2d_ops.c
+++ b/source/blender/editors/interface/view2d_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/io/CMakeLists.txt b/source/blender/editors/io/CMakeLists.txt
index 5db16354124220d518d4440da67a19abc21315dd..418a399db285a1c60081123e99076b6e3ed80097 100644
--- a/source/blender/editors/io/CMakeLists.txt
+++ b/source/blender/editors/io/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/io/io_alembic.c b/source/blender/editors/io/io_alembic.c
index bbff37221e89c4d60c6bf1a89c201a3ac4444e31..c9421d9aace14787416c736c281954e18875f339 100644
--- a/source/blender/editors/io/io_alembic.c
+++ b/source/blender/editors/io/io_alembic.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editor/io
diff --git a/source/blender/editors/io/io_alembic.h b/source/blender/editors/io/io_alembic.h
index 512f4e4636bfc3df29a64ee85849330b757e40fb..d0eeb77c4e7d6bd69315600286e247294c907dd8 100644
--- a/source/blender/editors/io/io_alembic.h
+++ b/source/blender/editors/io/io_alembic.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/editors/io/io_cache.c b/source/blender/editors/io/io_cache.c
index 4f71a80498627de4cb093bc4c672e59455068400..624b85358f59a4ec3b6a26ef82c7ebac05527abe 100644
--- a/source/blender/editors/io/io_cache.c
+++ b/source/blender/editors/io/io_cache.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editor/io
diff --git a/source/blender/editors/io/io_cache.h b/source/blender/editors/io/io_cache.h
index 297e065434f1f9534feea8d0f370d2021f87a3dc..3772cbc370ca5ca5eefbdaf05dd4a309a1613099 100644
--- a/source/blender/editors/io/io_cache.h
+++ b/source/blender/editors/io/io_cache.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/editors/io/io_collada.c b/source/blender/editors/io/io_collada.c
index 859c12d7e526f8a12f080b5bd11f2d2db8b622dd..1d5c9d717d0ff164ec988e0b25f8c8e7849f26f7 100644
--- a/source/blender/editors/io/io_collada.c
+++ b/source/blender/editors/io/io_collada.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/editors/io/io_collada.h b/source/blender/editors/io/io_collada.h
index 5c0a1a8b927539979906856a1734edc9226b5e2e..6aa60eb3ef53082b41cf69550132db17ebd2ba54 100644
--- a/source/blender/editors/io/io_collada.h
+++ b/source/blender/editors/io/io_collada.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editor/io
diff --git a/source/blender/editors/io/io_gpencil.h b/source/blender/editors/io/io_gpencil.h
index 2359ab4a333177805d794d3a6da2da6bfcdb6d84..d58f65fde67338a76528dd379effbce1a2421af6 100644
--- a/source/blender/editors/io/io_gpencil.h
+++ b/source/blender/editors/io/io_gpencil.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editor/io
diff --git a/source/blender/editors/io/io_gpencil_export.c b/source/blender/editors/io/io_gpencil_export.c
index 556fae70828ec2a688d58f88412a2511d263e048..bbde8ce42a2fde7734e0735ff7d39e8af467aecd 100644
--- a/source/blender/editors/io/io_gpencil_export.c
+++ b/source/blender/editors/io/io_gpencil_export.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editor/io
diff --git a/source/blender/editors/io/io_gpencil_import.c b/source/blender/editors/io/io_gpencil_import.c
index a9911f1cef28853d2b95bc2559f926626db9d32d..8bed32ad6c379f20887a07c156a459bf79ea49b8 100644
--- a/source/blender/editors/io/io_gpencil_import.c
+++ b/source/blender/editors/io/io_gpencil_import.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editor/io
diff --git a/source/blender/editors/io/io_gpencil_utils.c b/source/blender/editors/io/io_gpencil_utils.c
index 259a669519af9a3638678b9a69b6a910979ebcb7..fa5fcd79b963d283a46ace0607f5c27308b1f61d 100644
--- a/source/blender/editors/io/io_gpencil_utils.c
+++ b/source/blender/editors/io/io_gpencil_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editor/io
diff --git a/source/blender/editors/io/io_obj.c b/source/blender/editors/io/io_obj.c
index 2bc2a832d20a0bd346ed3b16dad67981ef077d37..28e14a14f5f0c2f0427cbe372ededbec04d1aed2 100644
--- a/source/blender/editors/io/io_obj.c
+++ b/source/blender/editors/io/io_obj.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editor/io
diff --git a/source/blender/editors/io/io_obj.h b/source/blender/editors/io/io_obj.h
index 5a0e6971edd4157ed6bd3e68796d1e8d542e2ce4..cb9cdc8e74da8660d97a3d7c6af0cdb06ed567fe 100644
--- a/source/blender/editors/io/io_obj.h
+++ b/source/blender/editors/io/io_obj.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editor/io
diff --git a/source/blender/editors/io/io_ops.c b/source/blender/editors/io/io_ops.c
index d9bbd7d869200316203c0eb034ff3ca2781ca60d..ccd19608ddd10f954399590800ef2387b74b9767 100644
--- a/source/blender/editors/io/io_ops.c
+++ b/source/blender/editors/io/io_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/editors/io/io_ops.h b/source/blender/editors/io/io_ops.h
index 2e6cccbf438db2dc6c6c70f646037a0457df80d1..97e2b15a3205f69bbabc814c3a2dda35e0a414f5 100644
--- a/source/blender/editors/io/io_ops.h
+++ b/source/blender/editors/io/io_ops.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editor/io
diff --git a/source/blender/editors/io/io_usd.c b/source/blender/editors/io/io_usd.c
index 49d60ede277717ae6a70384690eaaaf4218a23e7..c4f1ae88d28d4e78980b2be9bce5c95aeb1ee9ea 100644
--- a/source/blender/editors/io/io_usd.c
+++ b/source/blender/editors/io/io_usd.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editor/io
diff --git a/source/blender/editors/io/io_usd.h b/source/blender/editors/io/io_usd.h
index 7424cc0df32ddbd3aadf67564b962d5fa38bad60..4a51e240e601b38e9c96269132c62c4b86546ee3 100644
--- a/source/blender/editors/io/io_usd.h
+++ b/source/blender/editors/io/io_usd.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/editors/lattice/CMakeLists.txt b/source/blender/editors/lattice/CMakeLists.txt
index 96f0dfcdb9fb63e68f0961b081b3bbd065eae857..890858b0e02cdf6d8f1a6c4ae7290cbfc978599e 100644
--- a/source/blender/editors/lattice/CMakeLists.txt
+++ b/source/blender/editors/lattice/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/lattice/editlattice_select.c b/source/blender/editors/lattice/editlattice_select.c
index 5ea2b68d9013f4fe8be1cbaae7c4b2b005be3da6..d1635078126efb90acf89ae8cb89c5129dc2356f 100644
--- a/source/blender/editors/lattice/editlattice_select.c
+++ b/source/blender/editors/lattice/editlattice_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edlattice
diff --git a/source/blender/editors/lattice/editlattice_tools.c b/source/blender/editors/lattice/editlattice_tools.c
index 15325c7648c96ccdecbd73ffbd15e2e12d358360..bb68b244d35c1361d15e38e51cdbf639a08fe792 100644
--- a/source/blender/editors/lattice/editlattice_tools.c
+++ b/source/blender/editors/lattice/editlattice_tools.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edlattice
diff --git a/source/blender/editors/lattice/editlattice_undo.c b/source/blender/editors/lattice/editlattice_undo.c
index 6d79d063a2fd3acd9cfaf9e0b0fae390d4dfb7dd..7615a57c8fe0420396108e96f9aa4c753e4d7105 100644
--- a/source/blender/editors/lattice/editlattice_undo.c
+++ b/source/blender/editors/lattice/editlattice_undo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edlattice
diff --git a/source/blender/editors/lattice/lattice_intern.h b/source/blender/editors/lattice/lattice_intern.h
index ee324a3b31ed7c805294115c614da8948ab4fd11..bc60d0084c4e1761b3cad74fd0d889166ae1dc0d 100644
--- a/source/blender/editors/lattice/lattice_intern.h
+++ b/source/blender/editors/lattice/lattice_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edlattice
diff --git a/source/blender/editors/lattice/lattice_ops.c b/source/blender/editors/lattice/lattice_ops.c
index 3f96b8a303b7ab53aa8507472ba01f078f95c0fd..71cb39d8dc1e0276af8829629e42dc7fdc20a7af 100644
--- a/source/blender/editors/lattice/lattice_ops.c
+++ b/source/blender/editors/lattice/lattice_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edlattice
diff --git a/source/blender/editors/mask/CMakeLists.txt b/source/blender/editors/mask/CMakeLists.txt
index dd04732a814f5c893a477f16ddad9cf149d00731..fdb0d13f3640cac0a6708951c54d19c0438cfe50 100644
--- a/source/blender/editors/mask/CMakeLists.txt
+++ b/source/blender/editors/mask/CMakeLists.txt
@@ -1,21 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2012 Blender Foundation.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2012 Blender Foundation.
 
 set(INC
   ../include
diff --git a/source/blender/editors/mask/mask_add.c b/source/blender/editors/mask/mask_add.c
index 110f4541e8fba45faad733b75b7e13cc39e74dbb..0b9261eac4f591caec58b58a6230a5abf1a921b9 100644
--- a/source/blender/editors/mask/mask_add.c
+++ b/source/blender/editors/mask/mask_add.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmask
diff --git a/source/blender/editors/mask/mask_draw.c b/source/blender/editors/mask/mask_draw.c
index 0e207df7f9487dec0838803ce6164801b7c295da..8fe3b74f9c934b01f91bd5c1a22742cbc1c0075c 100644
--- a/source/blender/editors/mask/mask_draw.c
+++ b/source/blender/editors/mask/mask_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmask
diff --git a/source/blender/editors/mask/mask_edit.c b/source/blender/editors/mask/mask_edit.c
index f1041d062a84a1321dcd9c67f5fb2b88ad9e1177..819ffd96b1c6b798f93f9934dd704c03ecc51e9a 100644
--- a/source/blender/editors/mask/mask_edit.c
+++ b/source/blender/editors/mask/mask_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmask
diff --git a/source/blender/editors/mask/mask_editaction.c b/source/blender/editors/mask/mask_editaction.c
index 3668f3bb34e03fef6909daf41e765c9533d52738..8bb6e8a71dbabdcdde580b9e0ffde49a651ff40b 100644
--- a/source/blender/editors/mask/mask_editaction.c
+++ b/source/blender/editors/mask/mask_editaction.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup edmask
diff --git a/source/blender/editors/mask/mask_intern.h b/source/blender/editors/mask/mask_intern.h
index 19a3b3966a1dfe265e0f65aa13d0d1fc5b5161a4..ee272cc6454d732a163b4700138c19e5bc43e55b 100644
--- a/source/blender/editors/mask/mask_intern.h
+++ b/source/blender/editors/mask/mask_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/mask/mask_ops.c b/source/blender/editors/mask/mask_ops.c
index 8feb526c8d5c2cf99a5eccc2af9fbedecf988872..595e6d791ef9a22206d7c29ec8dbdeaf08528206 100644
--- a/source/blender/editors/mask/mask_ops.c
+++ b/source/blender/editors/mask/mask_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmask
diff --git a/source/blender/editors/mask/mask_query.c b/source/blender/editors/mask/mask_query.c
index de80d9f04bdfd1ec84d81d1479585e714cb70973..afe457a8502b520507041e14a58f26008f842160 100644
--- a/source/blender/editors/mask/mask_query.c
+++ b/source/blender/editors/mask/mask_query.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmask
diff --git a/source/blender/editors/mask/mask_relationships.c b/source/blender/editors/mask/mask_relationships.c
index 259402efbf19ceddcc7a1c3326fd9b49ae173e57..9d8b84de66b5d3deaf971a35e290b53ee678bbae 100644
--- a/source/blender/editors/mask/mask_relationships.c
+++ b/source/blender/editors/mask/mask_relationships.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmask
diff --git a/source/blender/editors/mask/mask_select.c b/source/blender/editors/mask/mask_select.c
index dd4a557f449c4b5425bdb7c33aaeda97eb215ab0..29cd593ce7f2fdd6dfcf5a367672ef5033e17478 100644
--- a/source/blender/editors/mask/mask_select.c
+++ b/source/blender/editors/mask/mask_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmask
diff --git a/source/blender/editors/mask/mask_shapekey.c b/source/blender/editors/mask/mask_shapekey.c
index 6620096c39a852a328e99ccbcd74cb60a4834558..dd54d84a90bfd55f21e119d0f015d59b5c7270a6 100644
--- a/source/blender/editors/mask/mask_shapekey.c
+++ b/source/blender/editors/mask/mask_shapekey.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmask
diff --git a/source/blender/editors/mesh/CMakeLists.txt b/source/blender/editors/mesh/CMakeLists.txt
index 0fb64c8a46b3cc5a4fedbe5f1a83cc5ddca70603..35953abc61a95d3c50eff0cf941cbce7442fa42b 100644
--- a/source/blender/editors/mesh/CMakeLists.txt
+++ b/source/blender/editors/mesh/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/mesh/editface.c b/source/blender/editors/mesh/editface.c
index 06547c94992c06a4acff45faecb8e4e10dae1c64..8a1e12c76c501de42d26e67a2f15eb0490f67561 100644
--- a/source/blender/editors/mesh/editface.c
+++ b/source/blender/editors/mesh/editface.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_add.c b/source/blender/editors/mesh/editmesh_add.c
index c826da74010bc934b733b0cef50412ad9e255b7a..b2f33428b2182754341103dd9c1ca62686c79895 100644
--- a/source/blender/editors/mesh/editmesh_add.c
+++ b/source/blender/editors/mesh/editmesh_add.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_add_gizmo.c b/source/blender/editors/mesh/editmesh_add_gizmo.c
index e2c75435af4c77559727b89ee13cffc65e33ad74..d0f373146616f67e66564b360ad80f1d8604c7cb 100644
--- a/source/blender/editors/mesh/editmesh_add_gizmo.c
+++ b/source/blender/editors/mesh/editmesh_add_gizmo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_automerge.c b/source/blender/editors/mesh/editmesh_automerge.c
index 35fff1f8f3aa00889b5d267bfca75ec8f7a128ef..6697521db0adf6ab099af37dd2b4278afa03905c 100644
--- a/source/blender/editors/mesh/editmesh_automerge.c
+++ b/source/blender/editors/mesh/editmesh_automerge.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_bevel.c b/source/blender/editors/mesh/editmesh_bevel.c
index 332f1f98d81ed479febff6aff1a813e62241927f..429db50f32192a883888d7b1a656d5583d584ccc 100644
--- a/source/blender/editors/mesh/editmesh_bevel.c
+++ b/source/blender/editors/mesh/editmesh_bevel.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_bisect.c b/source/blender/editors/mesh/editmesh_bisect.c
index 27a1bf9658f24fdb4fa5362bb90b5137bd7561c6..58bd906101c1fd6ac33ec6edc33aa5adccb59349 100644
--- a/source/blender/editors/mesh/editmesh_bisect.c
+++ b/source/blender/editors/mesh/editmesh_bisect.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_extrude.c b/source/blender/editors/mesh/editmesh_extrude.c
index 913be7d69bb8e4e5334a8ae019487c2da7527394..8d63b1ea020b68680b69996d889c02af85d0537d 100644
--- a/source/blender/editors/mesh/editmesh_extrude.c
+++ b/source/blender/editors/mesh/editmesh_extrude.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_extrude_screw.c b/source/blender/editors/mesh/editmesh_extrude_screw.c
index 1ba6a0f42c62b23f2870e8fb0121558e9b798729..cc493cab0f914c11376ce12737cd45398f7bde44 100644
--- a/source/blender/editors/mesh/editmesh_extrude_screw.c
+++ b/source/blender/editors/mesh/editmesh_extrude_screw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_extrude_spin.c b/source/blender/editors/mesh/editmesh_extrude_spin.c
index d7eaf58653fbc291d8ca65a18584e75ccd8aca25..ec04ece6569890738dc7369c324245ea7f5bccbc 100644
--- a/source/blender/editors/mesh/editmesh_extrude_spin.c
+++ b/source/blender/editors/mesh/editmesh_extrude_spin.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_extrude_spin_gizmo.c b/source/blender/editors/mesh/editmesh_extrude_spin_gizmo.c
index 7c289744eeb83a743630fda1b7714cb84e96a475..8d75e2aaf37c891a5f859f4d5ce5a122fd69c2ac 100644
--- a/source/blender/editors/mesh/editmesh_extrude_spin_gizmo.c
+++ b/source/blender/editors/mesh/editmesh_extrude_spin_gizmo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_inset.c b/source/blender/editors/mesh/editmesh_inset.c
index 7be169f70f4003c5a8302b91aceef8668f9400a8..ae21e6143f63b673e1d3f9520c7bf1e87e635efd 100644
--- a/source/blender/editors/mesh/editmesh_inset.c
+++ b/source/blender/editors/mesh/editmesh_inset.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_intersect.c b/source/blender/editors/mesh/editmesh_intersect.c
index 81dc34f894f91c9ce008a53510eedd649706bafd..2642a613e9299fb157c0142d55929b9ce93263a3 100644
--- a/source/blender/editors/mesh/editmesh_intersect.c
+++ b/source/blender/editors/mesh/editmesh_intersect.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_knife.c b/source/blender/editors/mesh/editmesh_knife.c
index cae781327d52e37812fcf9b89f0035910ad25f10..64d10f7e2afeb2366d32cadcfddbdedc035d8ec8 100644
--- a/source/blender/editors/mesh/editmesh_knife.c
+++ b/source/blender/editors/mesh/editmesh_knife.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_knife_project.c b/source/blender/editors/mesh/editmesh_knife_project.c
index 3129fb047abf42fe032610b4811e431785c120fa..84bda411d4a42ab98f9bd1160c81e121c587e16d 100644
--- a/source/blender/editors/mesh/editmesh_knife_project.c
+++ b/source/blender/editors/mesh/editmesh_knife_project.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_loopcut.c b/source/blender/editors/mesh/editmesh_loopcut.c
index 24825ef1e3aa40f597355e36be64ae5aca45121f..72844908685de09e7b6c74446e3dcdd9441f6e0e 100644
--- a/source/blender/editors/mesh/editmesh_loopcut.c
+++ b/source/blender/editors/mesh/editmesh_loopcut.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_mask_extract.c b/source/blender/editors/mesh/editmesh_mask_extract.c
index a1a7dfac28204dcb076127839c473c34a3125258..faf449a77aaee7333349930c26332b2520d58100 100644
--- a/source/blender/editors/mesh/editmesh_mask_extract.c
+++ b/source/blender/editors/mesh/editmesh_mask_extract.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_path.c b/source/blender/editors/mesh/editmesh_path.c
index e48b5d8255e64aa5ce9e3353adfe0056ef902fde..dbda9fa77460140c6f9c21f5cdc4b595ecd6588c 100644
--- a/source/blender/editors/mesh/editmesh_path.c
+++ b/source/blender/editors/mesh/editmesh_path.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_polybuild.c b/source/blender/editors/mesh/editmesh_polybuild.c
index 303cf41df0d661fe2871531318427f277d90e81e..493e476ba4f32732239e0736af386435dfe795a1 100644
--- a/source/blender/editors/mesh/editmesh_polybuild.c
+++ b/source/blender/editors/mesh/editmesh_polybuild.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_preselect_edgering.c b/source/blender/editors/mesh/editmesh_preselect_edgering.c
index c58f29917b17862df66ba967cc9c2b42d96dd456..0773533bc5cb99fc58b62fc3f9c4d568a108ed73 100644
--- a/source/blender/editors/mesh/editmesh_preselect_edgering.c
+++ b/source/blender/editors/mesh/editmesh_preselect_edgering.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_preselect_elem.c b/source/blender/editors/mesh/editmesh_preselect_elem.c
index ab2682510616e47dd2b3c3a783271d4dd973cb23..cf73e5797002ad56de6f17776a041d4d143e8287 100644
--- a/source/blender/editors/mesh/editmesh_preselect_elem.c
+++ b/source/blender/editors/mesh/editmesh_preselect_elem.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_rip.c b/source/blender/editors/mesh/editmesh_rip.c
index 07ec8e184baf7c45a11ca8abc221ec66d3d1e967..a8d62d90698d0812c0f8f2eabeb46770b30e84ab 100644
--- a/source/blender/editors/mesh/editmesh_rip.c
+++ b/source/blender/editors/mesh/editmesh_rip.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_rip_edge.c b/source/blender/editors/mesh/editmesh_rip_edge.c
index ce49f0f80a3ad6db8173db17e715865c29b4fdbe..6b3a796ab0dc796dd29cf468f048c935fa9dfb89 100644
--- a/source/blender/editors/mesh/editmesh_rip_edge.c
+++ b/source/blender/editors/mesh/editmesh_rip_edge.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_select.c b/source/blender/editors/mesh/editmesh_select.c
index 8383492e459e0f89bfe59b875b7dc2f98ffba230..fc1d60fc7689b926df390e6c4afc1c69a50941a7 100644
--- a/source/blender/editors/mesh/editmesh_select.c
+++ b/source/blender/editors/mesh/editmesh_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_select_similar.c b/source/blender/editors/mesh/editmesh_select_similar.c
index 5ea3c0d7b32c599f54a1fdbba3e94882bb3d6089..3f05c27e8faea49930320b99049cbd774db802b3 100644
--- a/source/blender/editors/mesh/editmesh_select_similar.c
+++ b/source/blender/editors/mesh/editmesh_select_similar.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_tools.c b/source/blender/editors/mesh/editmesh_tools.c
index 633e8183eb39332f4f62c23465ebae9350993564..a1e661cf2ac8b891063c8a725477847bf2b63d07 100644
--- a/source/blender/editors/mesh/editmesh_tools.c
+++ b/source/blender/editors/mesh/editmesh_tools.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_undo.c b/source/blender/editors/mesh/editmesh_undo.c
index 59c357aa416a726203bd6ff6e7f7da75be6d9b74..92f2f859965eaf8ab6c9a3d67047deacfd1fcd63 100644
--- a/source/blender/editors/mesh/editmesh_undo.c
+++ b/source/blender/editors/mesh/editmesh_undo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/editmesh_utils.c b/source/blender/editors/mesh/editmesh_utils.c
index f3db8f1f0d2fc6d6a8686d3afcf33a57ac6edbb0..7feb04b36728efcafc6581a282d41fe4c7b759ec 100644
--- a/source/blender/editors/mesh/editmesh_utils.c
+++ b/source/blender/editors/mesh/editmesh_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/mesh_data.c b/source/blender/editors/mesh/mesh_data.c
index 0f58752f3230a659c4ae275a68516cf481c14000..49a5345d048e5e7c463639cb91fadb7d919b0710 100644
--- a/source/blender/editors/mesh/mesh_data.c
+++ b/source/blender/editors/mesh/mesh_data.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/mesh_intern.h b/source/blender/editors/mesh/mesh_intern.h
index 575e6d66ccd5caae6868fae01c0709dd936587f0..b39a0b90f6dd781117da360acd843ecebb83485d 100644
--- a/source/blender/editors/mesh/mesh_intern.h
+++ b/source/blender/editors/mesh/mesh_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/mesh_mirror.c b/source/blender/editors/mesh/mesh_mirror.c
index 1a3e6a5958867100a1e4ec4034ee65b42e4f4ef1..b3d4757184ef72adeae08415344d0279463ea5b8 100644
--- a/source/blender/editors/mesh/mesh_mirror.c
+++ b/source/blender/editors/mesh/mesh_mirror.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/mesh_ops.c b/source/blender/editors/mesh/mesh_ops.c
index d616dd3bb631860f12c5433dc1f3dd472e3c4b1d..be7f60b0da0c020cef4ce9ce4179409c428a9ec5 100644
--- a/source/blender/editors/mesh/mesh_ops.c
+++ b/source/blender/editors/mesh/mesh_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/mesh/meshtools.c b/source/blender/editors/mesh/meshtools.c
index c9615698c467eacd91b54dbcd2657c75217cef6d..5a8708c84b603945ceff539c3ad8d31ac06d0791 100644
--- a/source/blender/editors/mesh/meshtools.c
+++ b/source/blender/editors/mesh/meshtools.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/metaball/CMakeLists.txt b/source/blender/editors/metaball/CMakeLists.txt
index a247920c3057ee374c1f44e9c6d5844c19688f3c..9b029ed2526494f10e8333947fe0c0a0c239c314 100644
--- a/source/blender/editors/metaball/CMakeLists.txt
+++ b/source/blender/editors/metaball/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/metaball/editmball_undo.c b/source/blender/editors/metaball/editmball_undo.c
index 5c724ac2d01fb98b1ea28f4ba97b37c279451c06..5f13e822f84180f92dea8809a7a9f3f155c9df9d 100644
--- a/source/blender/editors/metaball/editmball_undo.c
+++ b/source/blender/editors/metaball/editmball_undo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmeta
diff --git a/source/blender/editors/metaball/mball_edit.c b/source/blender/editors/metaball/mball_edit.c
index 51cfc920d1db33236552452aa17e016c095aa456..136d0d46c68fde0c374b5b1658fbd647fafadfe3 100644
--- a/source/blender/editors/metaball/mball_edit.c
+++ b/source/blender/editors/metaball/mball_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edmeta
diff --git a/source/blender/editors/metaball/mball_intern.h b/source/blender/editors/metaball/mball_intern.h
index 2b90667f612367de6e17c8dd6d32f10f2061982f..d791973c29ef522e5c3183514ab6ff544bfdbb31 100644
--- a/source/blender/editors/metaball/mball_intern.h
+++ b/source/blender/editors/metaball/mball_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmeta
diff --git a/source/blender/editors/metaball/mball_ops.c b/source/blender/editors/metaball/mball_ops.c
index e57161928b0b1090527df4cb21c13ea81f8f0ce2..97f72b06cc0106ba437082b856833bfdc5b72077 100644
--- a/source/blender/editors/metaball/mball_ops.c
+++ b/source/blender/editors/metaball/mball_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edmeta
diff --git a/source/blender/editors/object/CMakeLists.txt b/source/blender/editors/object/CMakeLists.txt
index df76e605ebbc2521b0945c4d64fdae838b146787..54db59dc2fa35dc0adfc96462c529f053458f1fb 100644
--- a/source/blender/editors/object/CMakeLists.txt
+++ b/source/blender/editors/object/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/object/object_add.c b/source/blender/editors/object/object_add.c
index 06c505b21605500057e91436680607acb6d9ef1a..c2d811f56dc7dcb4866073616144bcc055df4d00 100644
--- a/source/blender/editors/object/object_add.c
+++ b/source/blender/editors/object/object_add.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_bake.c b/source/blender/editors/object/object_bake.c
index b903d664c9be67a89e9f7686006cf470e7ed1e6e..8f5aa919ec06fdbd40d501aa8ae8f466d97faf7d 100644
--- a/source/blender/editors/object/object_bake.c
+++ b/source/blender/editors/object/object_bake.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_bake_api.c b/source/blender/editors/object/object_bake_api.c
index f52d2103fff90091aed7b84e0c9fe77c5873e0e4..30e3f2b0c691570dd22a60faecc4e1abd7ea329e 100644
--- a/source/blender/editors/object/object_bake_api.c
+++ b/source/blender/editors/object/object_bake_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_collection.c b/source/blender/editors/object/object_collection.c
index ea203468e742243ed7bea11cce51033a921078a2..cdc262b23e1e8bb35026df6fcd14adef043ac515 100644
--- a/source/blender/editors/object/object_collection.c
+++ b/source/blender/editors/object/object_collection.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_constraint.c b/source/blender/editors/object/object_constraint.c
index 7ef176899123a879500dd273340dd2c9815d0b8b..4ccd35b512b4ea871c376eb8130734fa9fd001a6 100644
--- a/source/blender/editors/object/object_constraint.c
+++ b/source/blender/editors/object/object_constraint.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_data_transfer.c b/source/blender/editors/object/object_data_transfer.c
index 3744cbee3a430666a34b3dfec8ad0a41af38b1f5..9029974c86b272f986316579672df4bc2379958d 100644
--- a/source/blender/editors/object/object_data_transfer.c
+++ b/source/blender/editors/object/object_data_transfer.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_data_transform.c b/source/blender/editors/object/object_data_transform.c
index 4a4ace309e112e1846f3763859f0acdda02e96c8..f74556e3639ba27d2790ea18a3036fb66a925095 100644
--- a/source/blender/editors/object/object_data_transform.c
+++ b/source/blender/editors/object/object_data_transform.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_edit.c b/source/blender/editors/object/object_edit.c
index a38a5165c8cde6446b36704e855cf8f3e91e3d94..fd40ac7bc7c28586747b01e2b96f60c8912cf767 100644
--- a/source/blender/editors/object/object_edit.c
+++ b/source/blender/editors/object/object_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_facemap_ops.c b/source/blender/editors/object/object_facemap_ops.c
index f5127bd522887fc473ea841d1d0d4f3600f89b58..dddf5e40e87db9df550ae373414cd30950df6d97 100644
--- a/source/blender/editors/object/object_facemap_ops.c
+++ b/source/blender/editors/object/object_facemap_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_gpencil_modifier.c b/source/blender/editors/object/object_gpencil_modifier.c
index 5a6c25caacc55361c90dfd0f3bb74bf799a585c6..f59a2933d2353eb06b2f187873495f71550ee655 100644
--- a/source/blender/editors/object/object_gpencil_modifier.c
+++ b/source/blender/editors/object/object_gpencil_modifier.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_hook.c b/source/blender/editors/object/object_hook.c
index 51967ff35c762556c38beccb1e0300631b2ee75c..338307dc8caa906bd7016ef68293a8fb251d65e3 100644
--- a/source/blender/editors/object/object_hook.c
+++ b/source/blender/editors/object/object_hook.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_intern.h b/source/blender/editors/object/object_intern.h
index ddd44fb9ded1d010c180d8a7c889332fd2e7322b..0aac5957c9df80e78d01caefebbcfb7cdeb707f3 100644
--- a/source/blender/editors/object/object_intern.h
+++ b/source/blender/editors/object/object_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_modes.c b/source/blender/editors/object/object_modes.c
index d3f72b91366563702ec270c54b0ab34d2b6cef63..c586527973dd1b33e88d4eefd1cea3a25e33f552 100644
--- a/source/blender/editors/object/object_modes.c
+++ b/source/blender/editors/object/object_modes.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_modifier.c b/source/blender/editors/object/object_modifier.c
index 9d9e44de52315b04b807a7cf25cf677e1b527581..38a955dca0a0ade3e83f0afe0d195e8a295cfa3c 100644
--- a/source/blender/editors/object/object_modifier.c
+++ b/source/blender/editors/object/object_modifier.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_ops.c b/source/blender/editors/object/object_ops.c
index a9a429e7e6f7b3590d0cbfd69a028eb1e6d9513e..35f5ede270d465de4418802bf266b5d89fb577dc 100644
--- a/source/blender/editors/object/object_ops.c
+++ b/source/blender/editors/object/object_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_random.c b/source/blender/editors/object/object_random.c
index a6958c798f17640a0e408b81c4e3e06f208131b2..7d670d3f452c4c0e216d65bee0939d11e32cf8be 100644
--- a/source/blender/editors/object/object_random.c
+++ b/source/blender/editors/object/object_random.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_relations.c b/source/blender/editors/object/object_relations.c
index 8678bf9bd922d65b6f56020cad1ea9fb70d81e1b..8834941d0832fc26cacf779c8c0a9ce705e09daf 100644
--- a/source/blender/editors/object/object_relations.c
+++ b/source/blender/editors/object/object_relations.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_remesh.cc b/source/blender/editors/object/object_remesh.cc
index e4103db8e219ada4f61802f4ba8427149c244f30..44e6fb10528f26cf829783ac70464e4db4987b49 100644
--- a/source/blender/editors/object/object_remesh.cc
+++ b/source/blender/editors/object/object_remesh.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_select.c b/source/blender/editors/object/object_select.c
index a86dba15469bc095dede4d85212477efb8ef880b..3ebf578ca6b37e4c4f7304a52b19697a9edb1ac4 100644
--- a/source/blender/editors/object/object_select.c
+++ b/source/blender/editors/object/object_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_shader_fx.c b/source/blender/editors/object/object_shader_fx.c
index 043a679a0c07c49b3098e3b910b094498c9d627d..d58ea1fd54e5ef1fe0db69e708ad4a1848ba6d68 100644
--- a/source/blender/editors/object/object_shader_fx.c
+++ b/source/blender/editors/object/object_shader_fx.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_shapekey.c b/source/blender/editors/object/object_shapekey.c
index a871ddea48c70ea61ee80fb6d6baae7bac8d8843..ebcf8573ccdc67f8f7c38ebea4864217080db746 100644
--- a/source/blender/editors/object/object_shapekey.c
+++ b/source/blender/editors/object/object_shapekey.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_transform.c b/source/blender/editors/object/object_transform.c
index c9114c7a9253ed5661076ecede4608fc897d683e..f017fea7cdfaef350b9add56d7a7e22e9fb21d5b 100644
--- a/source/blender/editors/object/object_transform.c
+++ b/source/blender/editors/object/object_transform.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_utils.c b/source/blender/editors/object/object_utils.c
index df44d840ad3cac2e28ac7bdbfc9c405373b9369e..19940fbb0fc37ee45c892a11daa1b5c7367bd758 100644
--- a/source/blender/editors/object/object_utils.c
+++ b/source/blender/editors/object/object_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_vgroup.c b/source/blender/editors/object/object_vgroup.c
index ed0f7b2fad08f27feb7de47054d841c1168deb1b..f0fa693bd85e8e30b67221cfb44b6b804373a64b 100644
--- a/source/blender/editors/object/object_vgroup.c
+++ b/source/blender/editors/object/object_vgroup.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_volume.c b/source/blender/editors/object/object_volume.c
index 6c92814abc02df9728f5f86626a892e2315ebb5c..8de550923cb6447f07ab297ec4495c86b2f927b7 100644
--- a/source/blender/editors/object/object_volume.c
+++ b/source/blender/editors/object/object_volume.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/object/object_warp.c b/source/blender/editors/object/object_warp.c
index 4b15385b5370a400f1c3a916ad2de1ebb253bd75..a1d53cadd06fcbad8eb3cc880ff891b7bef1d1bc 100644
--- a/source/blender/editors/object/object_warp.c
+++ b/source/blender/editors/object/object_warp.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edobj
diff --git a/source/blender/editors/physics/CMakeLists.txt b/source/blender/editors/physics/CMakeLists.txt
index 7c32a2dcf1d0dfe4128089342b81d72ad3eae78d..42def07072e2c0642b6ec35146b3a665b86720f1 100644
--- a/source/blender/editors/physics/CMakeLists.txt
+++ b/source/blender/editors/physics/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/physics/dynamicpaint_ops.c b/source/blender/editors/physics/dynamicpaint_ops.c
index 3214180309b8e19489b81413358a2d13fd6df77c..5bc062eb1772fac2977d6b586940b42e5306c7fc 100644
--- a/source/blender/editors/physics/dynamicpaint_ops.c
+++ b/source/blender/editors/physics/dynamicpaint_ops.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edphys
diff --git a/source/blender/editors/physics/particle_boids.c b/source/blender/editors/physics/particle_boids.c
index 9b8622e6eac3142500cac04784c56110271e6742..d5dae03fce0e99b6e096006dccc9d3445614c587 100644
--- a/source/blender/editors/physics/particle_boids.c
+++ b/source/blender/editors/physics/particle_boids.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup edphys
diff --git a/source/blender/editors/physics/particle_edit.c b/source/blender/editors/physics/particle_edit.c
index 1407ca598a712024029ef69614d4b55329c6992d..af9496263e719ce095fd3994c201f2eda4a692f0 100644
--- a/source/blender/editors/physics/particle_edit.c
+++ b/source/blender/editors/physics/particle_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 by Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup edphys
diff --git a/source/blender/editors/physics/particle_edit_undo.c b/source/blender/editors/physics/particle_edit_undo.c
index 804ab614c09904a5c7291affc3240a6c47be0bea..54d28b49e0c5e1bcc80c6ad411161b9e052eb245 100644
--- a/source/blender/editors/physics/particle_edit_undo.c
+++ b/source/blender/editors/physics/particle_edit_undo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 by Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup edphys
diff --git a/source/blender/editors/physics/particle_edit_utildefines.h b/source/blender/editors/physics/particle_edit_utildefines.h
index 289ca193f179394700d796727fd321938f901635..76a8d5a5851a0232991a73ad2ecea68ae9327b74 100644
--- a/source/blender/editors/physics/particle_edit_utildefines.h
+++ b/source/blender/editors/physics/particle_edit_utildefines.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 by Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup edphys
diff --git a/source/blender/editors/physics/particle_object.c b/source/blender/editors/physics/particle_object.c
index 987b9e49057539365f8921fc9470d55b0e9cb241..27cd7d9c1dd9ffe9eee2454b14e76a90dfe8bc19 100644
--- a/source/blender/editors/physics/particle_object.c
+++ b/source/blender/editors/physics/particle_object.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edphys
diff --git a/source/blender/editors/physics/physics_fluid.c b/source/blender/editors/physics/physics_fluid.c
index cbab4fbd3d1fe780f51f0fcefad27415c6b5a8cd..96195bdcc2e1423c5fd5c849f57ba84e19f3042b 100644
--- a/source/blender/editors/physics/physics_fluid.c
+++ b/source/blender/editors/physics/physics_fluid.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edphys
diff --git a/source/blender/editors/physics/physics_intern.h b/source/blender/editors/physics/physics_intern.h
index e8270c7a4aaeb0a81d76bb97c7964efe991be29d..49b25742163babf9dce9f19087eb0edf0943f2b3 100644
--- a/source/blender/editors/physics/physics_intern.h
+++ b/source/blender/editors/physics/physics_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 by Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup edphys
diff --git a/source/blender/editors/physics/physics_ops.c b/source/blender/editors/physics/physics_ops.c
index f5b8067968985fb825b80353a08334ee016f563a..1cee6b2937381e384245194b762607b8a98fe816 100644
--- a/source/blender/editors/physics/physics_ops.c
+++ b/source/blender/editors/physics/physics_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edphys
diff --git a/source/blender/editors/physics/physics_pointcache.c b/source/blender/editors/physics/physics_pointcache.c
index ea8a4ce2a798754d66c535494552c5dbc0eabf7f..eaad0771399bba4958b0a6fb2000df508640b880 100644
--- a/source/blender/editors/physics/physics_pointcache.c
+++ b/source/blender/editors/physics/physics_pointcache.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 by Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup edphys
diff --git a/source/blender/editors/physics/rigidbody_constraint.c b/source/blender/editors/physics/rigidbody_constraint.c
index cb7ca5bd5d1e8d9292d58f858136f7ecc8567193..eb799f461776501b2b3f67f9e9b8246dbd3294b4 100644
--- a/source/blender/editors/physics/rigidbody_constraint.c
+++ b/source/blender/editors/physics/rigidbody_constraint.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editor_physics
diff --git a/source/blender/editors/physics/rigidbody_object.c b/source/blender/editors/physics/rigidbody_object.c
index fca3b5817b0e2bacc689f19c0bf7ad88c0767c2c..a7f6a3ab7b0846c3806ee2b4892c00915c15577a 100644
--- a/source/blender/editors/physics/rigidbody_object.c
+++ b/source/blender/editors/physics/rigidbody_object.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editor_physics
diff --git a/source/blender/editors/physics/rigidbody_world.c b/source/blender/editors/physics/rigidbody_world.c
index f2e2d7589dfb96f0735cbb4cec08ac810441cf6a..fa90d1e64d641f8816e1520df25803f2ed2d3a9b 100644
--- a/source/blender/editors/physics/rigidbody_world.c
+++ b/source/blender/editors/physics/rigidbody_world.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editor_physics
diff --git a/source/blender/editors/render/CMakeLists.txt b/source/blender/editors/render/CMakeLists.txt
index 934badd3b6fa50f8e9dd9531220a2bfdc686a663..dde1f138bac95b05f5bea31bd63aebb63a97d578 100644
--- a/source/blender/editors/render/CMakeLists.txt
+++ b/source/blender/editors/render/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/render/render_intern.hh b/source/blender/editors/render/render_intern.hh
index d374717664bc1a0fbc8eb1f465b68a9553bd118c..fc40fb068517e8375f10cf6151af898ad9692f7e 100644
--- a/source/blender/editors/render/render_intern.hh
+++ b/source/blender/editors/render/render_intern.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edrend
diff --git a/source/blender/editors/render/render_internal.cc b/source/blender/editors/render/render_internal.cc
index d04e45e4ccbd21a7a69d7d70351cdb36709e06b4..5308d4611e76969e256e5c2de4426a1c4908be0a 100644
--- a/source/blender/editors/render/render_internal.cc
+++ b/source/blender/editors/render/render_internal.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edrend
diff --git a/source/blender/editors/render/render_opengl.cc b/source/blender/editors/render/render_opengl.cc
index fb6742c9fd56f294d378b59ec4310080df8703c4..af4003b0c14cfc81ae7e07bc2d4a12e7021e402d 100644
--- a/source/blender/editors/render/render_opengl.cc
+++ b/source/blender/editors/render/render_opengl.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/editors/render/render_ops.cc b/source/blender/editors/render/render_ops.cc
index 0f10d186e6e1c8c098972dc4353ed32035a951eb..1583ce44ee5f7cf4d31e06990a7bbcab12078f5e 100644
--- a/source/blender/editors/render/render_ops.cc
+++ b/source/blender/editors/render/render_ops.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edrend
diff --git a/source/blender/editors/render/render_preview.cc b/source/blender/editors/render/render_preview.cc
index c1c75e485f71ee5fe1d27acac90548af415610d7..6aaf551a88a617d44bc8a970e16f4cd563db4b24 100644
--- a/source/blender/editors/render/render_preview.cc
+++ b/source/blender/editors/render/render_preview.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edrend
diff --git a/source/blender/editors/render/render_shading.cc b/source/blender/editors/render/render_shading.cc
index 19ab6841e2214114797d618b3603befc8c1b645e..bad4208cf19ffb43a52195fbd6961376db600f58 100644
--- a/source/blender/editors/render/render_shading.cc
+++ b/source/blender/editors/render/render_shading.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edrend
diff --git a/source/blender/editors/render/render_update.cc b/source/blender/editors/render/render_update.cc
index b1e8e3927ef0ee11e9b733f2456b97eb7aa5f3a8..3d26e7642118f2b7e64796a8780a19a0ed457f41 100644
--- a/source/blender/editors/render/render_update.cc
+++ b/source/blender/editors/render/render_update.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edrend
diff --git a/source/blender/editors/render/render_view.cc b/source/blender/editors/render/render_view.cc
index 980cd899120c10f5bf52dcac007b86ba701e29cd..a7ff2aad05a02e726633081d2c716296b4a493af 100644
--- a/source/blender/editors/render/render_view.cc
+++ b/source/blender/editors/render/render_view.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edrend
diff --git a/source/blender/editors/scene/CMakeLists.txt b/source/blender/editors/scene/CMakeLists.txt
index ce0c206276601e468f54aa866988487e5ab6a838..c8013b8d30ae525e7796ea8e7688f8227a05a4c6 100644
--- a/source/blender/editors/scene/CMakeLists.txt
+++ b/source/blender/editors/scene/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/scene/scene_edit.c b/source/blender/editors/scene/scene_edit.c
index 555ffbfd5e7efb5b04a36af77bd773dfe56e4fa5..08c7308d71118efdd7306186cd3fe8390fd5574c 100644
--- a/source/blender/editors/scene/scene_edit.c
+++ b/source/blender/editors/scene/scene_edit.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edscene
diff --git a/source/blender/editors/screen/CMakeLists.txt b/source/blender/editors/screen/CMakeLists.txt
index 7c5ae4dcd5eeb027708788e087fc12e8e095b5c8..aafdf358b31d115885e0b895296a6cf85e2880df 100644
--- a/source/blender/editors/screen/CMakeLists.txt
+++ b/source/blender/editors/screen/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/screen/area.c b/source/blender/editors/screen/area.c
index c6834c84794eb8a20035a6dd495a5091ea3e248a..95534d2a036b5d8363ddd013ab2fb68419e4a8a9 100644
--- a/source/blender/editors/screen/area.c
+++ b/source/blender/editors/screen/area.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edscr
diff --git a/source/blender/editors/screen/area_query.c b/source/blender/editors/screen/area_query.c
index 022f8620b0beb479fd99ebc3ef1b2b464e37846f..cf73ff68a42f87c1519596ec79bbb335ee2f018e 100644
--- a/source/blender/editors/screen/area_query.c
+++ b/source/blender/editors/screen/area_query.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edscr
diff --git a/source/blender/editors/screen/area_utils.c b/source/blender/editors/screen/area_utils.c
index 9a688ac0b05e329e01371b518337a098beea8ee7..966a68faa2dc93a3149d640bca1bd31e5bb492fa 100644
--- a/source/blender/editors/screen/area_utils.c
+++ b/source/blender/editors/screen/area_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edscr
diff --git a/source/blender/editors/screen/glutil.c b/source/blender/editors/screen/glutil.c
index 63b7fbc14a720e1cd674f3e797ad4b82bb2d859d..f43bc08151a3a845f177fd0525f91435c1057ca0 100644
--- a/source/blender/editors/screen/glutil.c
+++ b/source/blender/editors/screen/glutil.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edscr
diff --git a/source/blender/editors/screen/screen_context.c b/source/blender/editors/screen/screen_context.c
index 04df90bf912502276d8f4a9bd1095713009a6c23..80d73a6798cf66fbb31bf06085c2fa7ffa80f7c8 100644
--- a/source/blender/editors/screen/screen_context.c
+++ b/source/blender/editors/screen/screen_context.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edscr
diff --git a/source/blender/editors/screen/screen_draw.c b/source/blender/editors/screen/screen_draw.c
index 01730b3c9aa28d560f2e8041af3a7ceadd2062da..dbdd0957d4b552e41c883cebd4e31e73bc9f125c 100644
--- a/source/blender/editors/screen/screen_draw.c
+++ b/source/blender/editors/screen/screen_draw.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edscr
diff --git a/source/blender/editors/screen/screen_edit.c b/source/blender/editors/screen/screen_edit.c
index 8dd4b940491be4ded58fbad82d5591b87ac52901..d538518105506ac7ff6a9c68e1bb41b0ad771a46 100644
--- a/source/blender/editors/screen/screen_edit.c
+++ b/source/blender/editors/screen/screen_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edscr
diff --git a/source/blender/editors/screen/screen_geometry.c b/source/blender/editors/screen/screen_geometry.c
index 394a7fd7350a37e7d9a2840b7b0ab069a621052d..3486ea8b466288eb5ade62cf4334aec475d7d2e7 100644
--- a/source/blender/editors/screen/screen_geometry.c
+++ b/source/blender/editors/screen/screen_geometry.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edscr
diff --git a/source/blender/editors/screen/screen_intern.h b/source/blender/editors/screen/screen_intern.h
index e42c891b0ba9dfac1dce054ea6b76baefa8e1bd4..70b66c41a544fbfd97401b933a93c7a0a53a265b 100644
--- a/source/blender/editors/screen/screen_intern.h
+++ b/source/blender/editors/screen/screen_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edscr
diff --git a/source/blender/editors/screen/screen_ops.c b/source/blender/editors/screen/screen_ops.c
index 4af965621e3dbfa5cbec279208817e3e828c5411..7171aa7ac3b3093e897815603666d6e1d9cba49e 100644
--- a/source/blender/editors/screen/screen_ops.c
+++ b/source/blender/editors/screen/screen_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edscr
diff --git a/source/blender/editors/screen/screen_user_menu.c b/source/blender/editors/screen/screen_user_menu.c
index 4cad97652dddbc9ff6dde859d633f660ffaf159f..3a4d4d66fdc96f018c8d30b0b907e7ed2d66c418 100644
--- a/source/blender/editors/screen/screen_user_menu.c
+++ b/source/blender/editors/screen/screen_user_menu.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/screen/screendump.c b/source/blender/editors/screen/screendump.c
index 2b16b70d1ef6640a5fddca532ab1a2fd561f01f2..f72452d92694da5b989e035d8f84d04ff89241a5 100644
--- a/source/blender/editors/screen/screendump.c
+++ b/source/blender/editors/screen/screendump.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edscr
diff --git a/source/blender/editors/screen/workspace_edit.c b/source/blender/editors/screen/workspace_edit.c
index 6e69c82ba67f2388601e525fa86bf729b675a24c..01417650b3ddfa506327c2bff558c7719f6cb99e 100644
--- a/source/blender/editors/screen/workspace_edit.c
+++ b/source/blender/editors/screen/workspace_edit.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edscr
diff --git a/source/blender/editors/screen/workspace_layout_edit.c b/source/blender/editors/screen/workspace_layout_edit.c
index e34c4f96aa3d6b8235f2617b477cf76978763fbc..ac468ac76defceef67e7506765ed4e045f4be82b 100644
--- a/source/blender/editors/screen/workspace_layout_edit.c
+++ b/source/blender/editors/screen/workspace_layout_edit.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edscr
diff --git a/source/blender/editors/sculpt_paint/CMakeLists.txt b/source/blender/editors/sculpt_paint/CMakeLists.txt
index 907080626e0b140e386b1f068f4b792003d64d0b..55099e2e750b1e3d6a566cce4524662aa0948132 100644
--- a/source/blender/editors/sculpt_paint/CMakeLists.txt
+++ b/source/blender/editors/sculpt_paint/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/sculpt_paint/paint_cursor.c b/source/blender/editors/sculpt_paint/paint_cursor.c
index 4010b87a2edce9c23717cc79aead5c285289ea51..37bc8b462aa82b6d5bbd7242820f9b592b23c2bd 100644
--- a/source/blender/editors/sculpt_paint/paint_cursor.c
+++ b/source/blender/editors/sculpt_paint/paint_cursor.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 by Nicholas Bishop. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_curve.c b/source/blender/editors/sculpt_paint/paint_curve.c
index 6d805adda4226b32789d728a5d1439d4d4555d3f..57c8bd5854966bbe43c054602f33dffadbd61fa2 100644
--- a/source/blender/editors/sculpt_paint/paint_curve.c
+++ b/source/blender/editors/sculpt_paint/paint_curve.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_curve_undo.c b/source/blender/editors/sculpt_paint/paint_curve_undo.c
index 0b59e519f7080c7f03804ca53b78b65b2c2fe406..2678ec6e115f3cf0ddf70aaccba2df1cfb2ca99f 100644
--- a/source/blender/editors/sculpt_paint/paint_curve_undo.c
+++ b/source/blender/editors/sculpt_paint/paint_curve_undo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_hide.c b/source/blender/editors/sculpt_paint/paint_hide.c
index 805d2221f6fb811169c7801ef2b57d1385df06d4..57d4bd67438633edd5631fa3ad73e6e9cb47c905 100644
--- a/source/blender/editors/sculpt_paint/paint_hide.c
+++ b/source/blender/editors/sculpt_paint/paint_hide.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 by Nicholas Bishop. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_image.c b/source/blender/editors/sculpt_paint/paint_image.c
index d5aa76476036ac14c239c17974626fa06ee034bd..df9e2cf136f70513c12ae9b90e9db556eac4e31d 100644
--- a/source/blender/editors/sculpt_paint/paint_image.c
+++ b/source/blender/editors/sculpt_paint/paint_image.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_image_2d.c b/source/blender/editors/sculpt_paint/paint_image_2d.c
index 4c54d3b3b5e579dbddd020d05e0326f93457f701..d30aa4dfab159c2547e59d20fcf67a603e268e00 100644
--- a/source/blender/editors/sculpt_paint/paint_image_2d.c
+++ b/source/blender/editors/sculpt_paint/paint_image_2d.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/editors/sculpt_paint/paint_image_2d_curve_mask.cc b/source/blender/editors/sculpt_paint/paint_image_2d_curve_mask.cc
index 8d57a3d9152cac07c52df575e01f6f51cd93fdcb..64115f7c6ebc6b4e42df2f52c369504a6fca2bf2 100644
--- a/source/blender/editors/sculpt_paint/paint_image_2d_curve_mask.cc
+++ b/source/blender/editors/sculpt_paint/paint_image_2d_curve_mask.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup ed
diff --git a/source/blender/editors/sculpt_paint/paint_image_proj.c b/source/blender/editors/sculpt_paint/paint_image_proj.c
index 4d23119dd5f7c0b22d8ae59e324f7992873cc50f..db66aad4a7c7992e81c932e82385da20d015d165 100644
--- a/source/blender/editors/sculpt_paint/paint_image_proj.c
+++ b/source/blender/editors/sculpt_paint/paint_image_proj.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_intern.h b/source/blender/editors/sculpt_paint/paint_intern.h
index d31390bbb428b6b801475006afec56ced299def0..f1e79b98b8326bb1c24f6c933992e76cbe5429f9 100644
--- a/source/blender/editors/sculpt_paint/paint_intern.h
+++ b/source/blender/editors/sculpt_paint/paint_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_mask.c b/source/blender/editors/sculpt_paint/paint_mask.c
index 693964b2860b9779c7e8c5ebbd84e894f9de38a1..b85d2d0aec8053f12652d155f0bef9fb0a69efe2 100644
--- a/source/blender/editors/sculpt_paint/paint_mask.c
+++ b/source/blender/editors/sculpt_paint/paint_mask.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 by Nicholas Bishop. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_ops.c b/source/blender/editors/sculpt_paint/paint_ops.c
index c6b519f711f460c7d52fe4589efcd0e568a5a07d..1b876235ad0fae4bd5178becf762e6fb6a42c64c 100644
--- a/source/blender/editors/sculpt_paint/paint_ops.c
+++ b/source/blender/editors/sculpt_paint/paint_ops.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_stroke.c b/source/blender/editors/sculpt_paint/paint_stroke.c
index c87f4e0aeec4eae9fdc131aaea8a42ad9482ff35..9bbfb81e08eaf0175f3379bcfb54ffa8537f2061 100644
--- a/source/blender/editors/sculpt_paint/paint_stroke.c
+++ b/source/blender/editors/sculpt_paint/paint_stroke.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 by Nicholas Bishop. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_utils.c b/source/blender/editors/sculpt_paint/paint_utils.c
index 95a0aba1ffb6ccf8cbc3d67f1ba93b0211df4510..f54b012b8dd66f6d31a5b123580f421affda2f2a 100644
--- a/source/blender/editors/sculpt_paint/paint_utils.c
+++ b/source/blender/editors/sculpt_paint/paint_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_vertex.c b/source/blender/editors/sculpt_paint/paint_vertex.c
index 75d4237d15778e8b3ff098e6a4650fbe0acc5785..a82636023f8ecadb958b67e4c9f70a6baef01c5a 100644
--- a/source/blender/editors/sculpt_paint/paint_vertex.c
+++ b/source/blender/editors/sculpt_paint/paint_vertex.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_vertex_color_ops.c b/source/blender/editors/sculpt_paint/paint_vertex_color_ops.c
index f62d91acddf86a49ca2ec6c65b2a51f56020ae8f..619607408e5d47bfbf74fc7b79692bdcd1ff2b07 100644
--- a/source/blender/editors/sculpt_paint/paint_vertex_color_ops.c
+++ b/source/blender/editors/sculpt_paint/paint_vertex_color_ops.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_vertex_color_utils.c b/source/blender/editors/sculpt_paint/paint_vertex_color_utils.c
index a083af14c8986f3d711c5815b858a1f8d0bc2fb6..8d5f39fd56ebf3110308b8fd90520c9db76d2095 100644
--- a/source/blender/editors/sculpt_paint/paint_vertex_color_utils.c
+++ b/source/blender/editors/sculpt_paint/paint_vertex_color_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_vertex_proj.c b/source/blender/editors/sculpt_paint/paint_vertex_proj.c
index 9d5fffdcfcc2501f9848df9beeda2dec6d99270b..b4e2d4901c98a7b80e83f5a664b9661f8df8c323 100644
--- a/source/blender/editors/sculpt_paint/paint_vertex_proj.c
+++ b/source/blender/editors/sculpt_paint/paint_vertex_proj.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_vertex_weight_ops.c b/source/blender/editors/sculpt_paint/paint_vertex_weight_ops.c
index 1234a56853cbdf9c7dc6db940c5e60e37ce80963..d98660d8939306d1d6189f3d27f295202aecddc7 100644
--- a/source/blender/editors/sculpt_paint/paint_vertex_weight_ops.c
+++ b/source/blender/editors/sculpt_paint/paint_vertex_weight_ops.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/paint_vertex_weight_utils.c b/source/blender/editors/sculpt_paint/paint_vertex_weight_utils.c
index 34a27d5a5c2a960c017b423b48c308bea02c72d6..5a63af4149a1135c0d9ffec5d7ba359cb891003c 100644
--- a/source/blender/editors/sculpt_paint/paint_vertex_weight_utils.c
+++ b/source/blender/editors/sculpt_paint/paint_vertex_weight_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt.c b/source/blender/editors/sculpt_paint/sculpt.c
index 5faf9271848ce57a075652a4edac403341b2409c..68edf9cd54a35e9437816142d2eccdcfdacabe51 100644
--- a/source/blender/editors/sculpt_paint/sculpt.c
+++ b/source/blender/editors/sculpt_paint/sculpt.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 by Nicholas Bishop. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_automasking.c b/source/blender/editors/sculpt_paint/sculpt_automasking.c
index 35f48400fe26fcd29c8e84d5a987098a095435ec..d7a2a18504cd92a7566d96989403995b29f08dee 100644
--- a/source/blender/editors/sculpt_paint/sculpt_automasking.c
+++ b/source/blender/editors/sculpt_paint/sculpt_automasking.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_boundary.c b/source/blender/editors/sculpt_paint/sculpt_boundary.c
index 30b2562ecd9086eda8b762a2d5a95b2c38a9d2c2..70f8f2127b43846da1ea2077ffd069c8a45ac916 100644
--- a/source/blender/editors/sculpt_paint/sculpt_boundary.c
+++ b/source/blender/editors/sculpt_paint/sculpt_boundary.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_brush_types.c b/source/blender/editors/sculpt_paint/sculpt_brush_types.c
index eba7cce84cb67a66fa9e872d3a35969d6992fc1b..f75fb8e75424d54d082d05a8701798d5f2883d45 100644
--- a/source/blender/editors/sculpt_paint/sculpt_brush_types.c
+++ b/source/blender/editors/sculpt_paint/sculpt_brush_types.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 by Nicholas Bishop. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_cloth.c b/source/blender/editors/sculpt_paint/sculpt_cloth.c
index 1151f890ef183b2a669a8d18328a0cb1a9275427..80ba7601cb195a8ebc1022f1b394baa6ed1a2268 100644
--- a/source/blender/editors/sculpt_paint/sculpt_cloth.c
+++ b/source/blender/editors/sculpt_paint/sculpt_cloth.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_detail.c b/source/blender/editors/sculpt_paint/sculpt_detail.c
index f00b24d690a5bb29f7e96dcb4fae33f609e48596..0f1f7c57287e2f0f079b9b6d1b2d810f229849f0 100644
--- a/source/blender/editors/sculpt_paint/sculpt_detail.c
+++ b/source/blender/editors/sculpt_paint/sculpt_detail.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_dyntopo.c b/source/blender/editors/sculpt_paint/sculpt_dyntopo.c
index 051dc9f68373512e018579fdfc58a16588b219c9..0e26eb9b4b6be4797ebcd86624be3b6afb16f8dd 100644
--- a/source/blender/editors/sculpt_paint/sculpt_dyntopo.c
+++ b/source/blender/editors/sculpt_paint/sculpt_dyntopo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_expand.c b/source/blender/editors/sculpt_paint/sculpt_expand.c
index d332a6448d70c3ec52245fc67eb01ebd559fcf28..2ef35d540b9494e6b9c639afa9209258e99059db 100644
--- a/source/blender/editors/sculpt_paint/sculpt_expand.c
+++ b/source/blender/editors/sculpt_paint/sculpt_expand.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_face_set.c b/source/blender/editors/sculpt_paint/sculpt_face_set.c
index a4c614e11d9b10d731f7f7ad8de9cc34f63c5df5..5f6b8bf9b1926c65628d113c7d8a5c69ea2a8b44 100644
--- a/source/blender/editors/sculpt_paint/sculpt_face_set.c
+++ b/source/blender/editors/sculpt_paint/sculpt_face_set.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_filter_color.c b/source/blender/editors/sculpt_paint/sculpt_filter_color.c
index cb924259724417b48f2bc423be93574691e9f69d..93e2d72196224b5d42a0a5416277994567e35942 100644
--- a/source/blender/editors/sculpt_paint/sculpt_filter_color.c
+++ b/source/blender/editors/sculpt_paint/sculpt_filter_color.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_filter_mask.c b/source/blender/editors/sculpt_paint/sculpt_filter_mask.c
index e85fb19d2590ae6e0c65d8a5ece1b95fed70e8c8..e88265714b87567f976066c307a85ef88b232931 100644
--- a/source/blender/editors/sculpt_paint/sculpt_filter_mask.c
+++ b/source/blender/editors/sculpt_paint/sculpt_filter_mask.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_filter_mesh.c b/source/blender/editors/sculpt_paint/sculpt_filter_mesh.c
index 70fee4bac8dff0fd93dd3c4d11857b0830d7e687..ac2c83d3a9cd3e39643dab38f82384551ef10109 100644
--- a/source/blender/editors/sculpt_paint/sculpt_filter_mesh.c
+++ b/source/blender/editors/sculpt_paint/sculpt_filter_mesh.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_geodesic.c b/source/blender/editors/sculpt_paint/sculpt_geodesic.c
index d86d093830051a88753334ed45cd6571635ff897..1beb5d489616be2b12aa6c9d123ab88602c66d44 100644
--- a/source/blender/editors/sculpt_paint/sculpt_geodesic.c
+++ b/source/blender/editors/sculpt_paint/sculpt_geodesic.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_intern.h b/source/blender/editors/sculpt_paint/sculpt_intern.h
index 8de9fa3763be3f606041cb19e0db6354d0abeb8a..a6b412b2b7eeb7588d37eeabc59709844b2dae0f 100644
--- a/source/blender/editors/sculpt_paint/sculpt_intern.h
+++ b/source/blender/editors/sculpt_paint/sculpt_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 by Nicholas Bishop. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_mask_expand.c b/source/blender/editors/sculpt_paint/sculpt_mask_expand.c
index 89416687952b7049bd9e8419eb325124c746dc5c..72640893dea0a8b38c7d879c52d43321aef0eb55 100644
--- a/source/blender/editors/sculpt_paint/sculpt_mask_expand.c
+++ b/source/blender/editors/sculpt_paint/sculpt_mask_expand.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_mask_init.c b/source/blender/editors/sculpt_paint/sculpt_mask_init.c
index 0c383cdf0353d31a8b3d0047e59fcbf0cc2d5613..42101988b11d238f455b05139245f097f26080ea 100644
--- a/source/blender/editors/sculpt_paint/sculpt_mask_init.c
+++ b/source/blender/editors/sculpt_paint/sculpt_mask_init.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_multiplane_scrape.c b/source/blender/editors/sculpt_paint/sculpt_multiplane_scrape.c
index 67db996e743cc1c8e69b35a040fb1e9e5584ab88..ddc1a0e1db08149a644b898df47083aea9093050 100644
--- a/source/blender/editors/sculpt_paint/sculpt_multiplane_scrape.c
+++ b/source/blender/editors/sculpt_paint/sculpt_multiplane_scrape.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_ops.c b/source/blender/editors/sculpt_paint/sculpt_ops.c
index 509bad37b5c4f456ef979d288c5f263c1eb7cceb..53e8649585a9f86621658eddf42a52635e58b238 100644
--- a/source/blender/editors/sculpt_paint/sculpt_ops.c
+++ b/source/blender/editors/sculpt_paint/sculpt_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 by Nicholas Bishop. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_paint_color.c b/source/blender/editors/sculpt_paint/sculpt_paint_color.c
index e4f548bc07f1c9cda518fe3afb26c5a11b2e29b0..5d248cb520aa03e7d491965f9b2c7f42f7924649 100644
--- a/source/blender/editors/sculpt_paint/sculpt_paint_color.c
+++ b/source/blender/editors/sculpt_paint/sculpt_paint_color.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_pose.c b/source/blender/editors/sculpt_paint/sculpt_pose.c
index 37f3f75b95b64aa22cb6a02da2783625a05b834e..666cdd3fe500cdb576997c6db36b17fb17968f44 100644
--- a/source/blender/editors/sculpt_paint/sculpt_pose.c
+++ b/source/blender/editors/sculpt_paint/sculpt_pose.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_smooth.c b/source/blender/editors/sculpt_paint/sculpt_smooth.c
index a306737ed0ad45209d733e7593db1e64ad09ebe2..858c6c4e2798ec283f50ead8c201fb0667e47d21 100644
--- a/source/blender/editors/sculpt_paint/sculpt_smooth.c
+++ b/source/blender/editors/sculpt_paint/sculpt_smooth.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_transform.c b/source/blender/editors/sculpt_paint/sculpt_transform.c
index c0c3ae1b1601f7bffd4cf8a278db753baf67697f..5f55546c8a0dfcb45b51d54884b992393456a15e 100644
--- a/source/blender/editors/sculpt_paint/sculpt_transform.c
+++ b/source/blender/editors/sculpt_paint/sculpt_transform.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_undo.c b/source/blender/editors/sculpt_paint/sculpt_undo.c
index 1a1e21f328c0791f87bd97797cd1a62c4d2d6dfb..f3f47f71f60fceeb8bfaf3846db2273acc7d92ea 100644
--- a/source/blender/editors/sculpt_paint/sculpt_undo.c
+++ b/source/blender/editors/sculpt_paint/sculpt_undo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 by Nicholas Bishop
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 by Nicholas Bishop. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sculpt_paint/sculpt_uv.c b/source/blender/editors/sculpt_paint/sculpt_uv.c
index 35ad582d4ec8918aa5f803a597276eddcda9ddef..8e1f4f4d4952af189e5b468c5c7310eecaf2276e 100644
--- a/source/blender/editors/sculpt_paint/sculpt_uv.c
+++ b/source/blender/editors/sculpt_paint/sculpt_uv.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2002-2009, Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2002-2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsculpt
diff --git a/source/blender/editors/sound/CMakeLists.txt b/source/blender/editors/sound/CMakeLists.txt
index 644efe426e0a5128fb6c7a72e1e78f2d86b25ac8..be056c176c963be2f7e25387cba64ceaabe977cf 100644
--- a/source/blender/editors/sound/CMakeLists.txt
+++ b/source/blender/editors/sound/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/sound/sound_intern.h b/source/blender/editors/sound/sound_intern.h
index f4797838be0700b1cc4cc4ae62c8700edf654e3b..67f0f56b273875c0c156a746b78c67b3864c2982 100644
--- a/source/blender/editors/sound/sound_intern.h
+++ b/source/blender/editors/sound/sound_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsnd
diff --git a/source/blender/editors/sound/sound_ops.c b/source/blender/editors/sound/sound_ops.c
index 85f6647ddd0d520620c99ab0e65ec063a0e9fabd..29a63b102ec446f6e2126f6e9f3ccdd617d41005 100644
--- a/source/blender/editors/sound/sound_ops.c
+++ b/source/blender/editors/sound/sound_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edsnd
diff --git a/source/blender/editors/space_action/CMakeLists.txt b/source/blender/editors/space_action/CMakeLists.txt
index 10dcc77fc24816d73ff3179fe8fb719ff586dc9a..a7ecdfb19844b57bbdb037de77b853fa5d010c7c 100644
--- a/source/blender/editors/space_action/CMakeLists.txt
+++ b/source/blender/editors/space_action/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_action/action_buttons.c b/source/blender/editors/space_action/action_buttons.c
index dfc3789a26c4b5b35450326121a5dcbf84745a38..088f2fb490539d9d7d021b1541b88a567417cce5 100644
--- a/source/blender/editors/space_action/action_buttons.c
+++ b/source/blender/editors/space_action/action_buttons.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spaction
diff --git a/source/blender/editors/space_action/action_data.c b/source/blender/editors/space_action/action_data.c
index daa973edfbfce3acd07bfe5fc8b0c783f6a7e743..e383ada13318590d925c12b3db8d72de895e1e19 100644
--- a/source/blender/editors/space_action/action_data.c
+++ b/source/blender/editors/space_action/action_data.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. */
 
 /** \file
  * \ingroup spaction
diff --git a/source/blender/editors/space_action/action_draw.c b/source/blender/editors/space_action/action_draw.c
index 0ed55ca51918ede7991e8b170f29108a8da61835..7bdf2478862e8dd684019c17f63570940657b088 100644
--- a/source/blender/editors/space_action/action_draw.c
+++ b/source/blender/editors/space_action/action_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spaction
diff --git a/source/blender/editors/space_action/action_edit.c b/source/blender/editors/space_action/action_edit.c
index ba4ba04d5489f290afb4577adfa0b61f5fd11166..9d686f03becbb5cc92101c1267d4079a28a7f96a 100644
--- a/source/blender/editors/space_action/action_edit.c
+++ b/source/blender/editors/space_action/action_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spaction
diff --git a/source/blender/editors/space_action/action_intern.h b/source/blender/editors/space_action/action_intern.h
index 581356a89d000402e255334d4492961501235fd2..0bba829c1cc3167efb5712361e799554dde9d440 100644
--- a/source/blender/editors/space_action/action_intern.h
+++ b/source/blender/editors/space_action/action_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spaction
diff --git a/source/blender/editors/space_action/action_ops.c b/source/blender/editors/space_action/action_ops.c
index 7821458d1e58891eab0b93759fc6e3163fac28a5..b2af86959c892e5d2a2c64dd3f71ca90c1b1290a 100644
--- a/source/blender/editors/space_action/action_ops.c
+++ b/source/blender/editors/space_action/action_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spaction
diff --git a/source/blender/editors/space_action/action_select.c b/source/blender/editors/space_action/action_select.c
index 26d71178b68071938b3c606e1e95b6b33adda082..1be90109c3be581f0ef521bb4ea87005ea744878 100644
--- a/source/blender/editors/space_action/action_select.c
+++ b/source/blender/editors/space_action/action_select.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup spaction
diff --git a/source/blender/editors/space_action/space_action.c b/source/blender/editors/space_action/space_action.c
index ba96ac52f1f54d3ff71b9a78016f2fcdcb2aac09..03b9706515c695ed5a142d1ffe46d2b6dde2b9b3 100644
--- a/source/blender/editors/space_action/space_action.c
+++ b/source/blender/editors/space_action/space_action.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spaction
diff --git a/source/blender/editors/space_api/CMakeLists.txt b/source/blender/editors/space_api/CMakeLists.txt
index 85c07223f2df89fd3273905d6318fbb1e786116f..0024e7935d8b866d722b30303dae2302f705cc18 100644
--- a/source/blender/editors/space_api/CMakeLists.txt
+++ b/source/blender/editors/space_api/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_api/spacetypes.c b/source/blender/editors/space_api/spacetypes.c
index b786cada9084a6d9c36801263d6ba5071db96e73..d27782877ce271285e394f0cd328fb17b282c18a 100644
--- a/source/blender/editors/space_api/spacetypes.c
+++ b/source/blender/editors/space_api/spacetypes.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup spapi
diff --git a/source/blender/editors/space_buttons/CMakeLists.txt b/source/blender/editors/space_buttons/CMakeLists.txt
index 14cc03e312096fe5bbad700bbde1dd6dd9ab3aa9..8e4f83106857e410110b677638783fc1c8a35af2 100644
--- a/source/blender/editors/space_buttons/CMakeLists.txt
+++ b/source/blender/editors/space_buttons/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_buttons/buttons_context.c b/source/blender/editors/space_buttons/buttons_context.c
index b83396b10d9c2d90c2ca4d32f12f7aae3f82d5ed..287aef178ae67d7d312352cf67b03d2845ec7570 100644
--- a/source/blender/editors/space_buttons/buttons_context.c
+++ b/source/blender/editors/space_buttons/buttons_context.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spbuttons
diff --git a/source/blender/editors/space_buttons/buttons_intern.h b/source/blender/editors/space_buttons/buttons_intern.h
index 5eddea2cc403c1678c7339d5182edf59edb387f2..520d3a7c38db4dd355815fc1b8f0f80c7d300df1 100644
--- a/source/blender/editors/space_buttons/buttons_intern.h
+++ b/source/blender/editors/space_buttons/buttons_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spbuttons
diff --git a/source/blender/editors/space_buttons/buttons_ops.c b/source/blender/editors/space_buttons/buttons_ops.c
index 46d6df7c69cf0cf92f4eabc50540b527354035ef..cad6d34af2482081a7eb80da28f9295955569760 100644
--- a/source/blender/editors/space_buttons/buttons_ops.c
+++ b/source/blender/editors/space_buttons/buttons_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spbuttons
diff --git a/source/blender/editors/space_buttons/buttons_texture.c b/source/blender/editors/space_buttons/buttons_texture.c
index 5dd7c3d240ede170bf6539496f8479ff452a9df9..e98d51b7637427e05209be7c31997af4f345ff71 100644
--- a/source/blender/editors/space_buttons/buttons_texture.c
+++ b/source/blender/editors/space_buttons/buttons_texture.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spbuttons
diff --git a/source/blender/editors/space_buttons/space_buttons.c b/source/blender/editors/space_buttons/space_buttons.c
index cf1e7788ff8c315f0b22bcc32921360e60e237b7..1ec6832c6c3662a9dfa024cb26ff4877250104ed 100644
--- a/source/blender/editors/space_buttons/space_buttons.c
+++ b/source/blender/editors/space_buttons/space_buttons.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spbuttons
diff --git a/source/blender/editors/space_clip/CMakeLists.txt b/source/blender/editors/space_clip/CMakeLists.txt
index 8f1a2c3c81ee91f261538708b70e379b2c1b297e..6c7a2a6c4755125fb2db84abc7d857fe9a88ec5d 100644
--- a/source/blender/editors/space_clip/CMakeLists.txt
+++ b/source/blender/editors/space_clip/CMakeLists.txt
@@ -1,21 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2011 Blender Foundation.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2011 Blender Foundation.
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_clip/clip_buttons.c b/source/blender/editors/space_clip/clip_buttons.c
index 7379891543bdaefc6ccea12133cad38faf8a0002..e24d461019bfa6c033a2cc850de067b1773991bd 100644
--- a/source/blender/editors/space_clip/clip_buttons.c
+++ b/source/blender/editors/space_clip/clip_buttons.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/clip_dopesheet_draw.c b/source/blender/editors/space_clip/clip_dopesheet_draw.c
index 42fda3ef4647b4e6678248783f48fed97a3b4a47..0bf9b138beb63674b09d19517ab5dae5559f2273 100644
--- a/source/blender/editors/space_clip/clip_dopesheet_draw.c
+++ b/source/blender/editors/space_clip/clip_dopesheet_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/clip_dopesheet_ops.c b/source/blender/editors/space_clip/clip_dopesheet_ops.c
index 135b7d1cb6c1bf1c186258343c84875ebeb4dd86..731d963364d9df0547bb5002642262e50a281043 100644
--- a/source/blender/editors/space_clip/clip_dopesheet_ops.c
+++ b/source/blender/editors/space_clip/clip_dopesheet_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/clip_draw.c b/source/blender/editors/space_clip/clip_draw.c
index 68444cc03131f2c62e0128ded1d7c608730eb941..99524184323a0d31fb8590e1d951b720b07666a8 100644
--- a/source/blender/editors/space_clip/clip_draw.c
+++ b/source/blender/editors/space_clip/clip_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/clip_editor.c b/source/blender/editors/space_clip/clip_editor.c
index d22e4864ecfb1c9366e931986a13fef193838f12..87e88d094d73a534ed099de5117d0bfa902ac2fa 100644
--- a/source/blender/editors/space_clip/clip_editor.c
+++ b/source/blender/editors/space_clip/clip_editor.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/clip_graph_draw.c b/source/blender/editors/space_clip/clip_graph_draw.c
index e6fb6d7505136004e2e91dd23721f45deaef7379..7236e7bcee0ab3ed1e49173c0731e70fe660dc22 100644
--- a/source/blender/editors/space_clip/clip_graph_draw.c
+++ b/source/blender/editors/space_clip/clip_graph_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/clip_graph_ops.c b/source/blender/editors/space_clip/clip_graph_ops.c
index 9a4e0c7f060e240cc793174553a96b0c13d9d3d7..d07cf09ffa697cd5ea12067ae1a6cb187640f954 100644
--- a/source/blender/editors/space_clip/clip_graph_ops.c
+++ b/source/blender/editors/space_clip/clip_graph_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/clip_intern.h b/source/blender/editors/space_clip/clip_intern.h
index 15f905f315798a8babe0fe1bbaa7a290a5373903..99b271ebfecd9a787610d29764d0133b24071e44 100644
--- a/source/blender/editors/space_clip/clip_intern.h
+++ b/source/blender/editors/space_clip/clip_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/clip_ops.c b/source/blender/editors/space_clip/clip_ops.c
index b45eabdc7c31e99ae35d14ac49fa0b7be3463502..64ac20123d96e2acd6b0656ffbb179df2a84ad0a 100644
--- a/source/blender/editors/space_clip/clip_ops.c
+++ b/source/blender/editors/space_clip/clip_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/clip_toolbar.c b/source/blender/editors/space_clip/clip_toolbar.c
index da9e82043f01aae94860ce2d08742b10de79a841..017a73503a3f020cd79e6fb33355d701ca5ae435 100644
--- a/source/blender/editors/space_clip/clip_toolbar.c
+++ b/source/blender/editors/space_clip/clip_toolbar.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/clip_utils.c b/source/blender/editors/space_clip/clip_utils.c
index 5f5a24a9407784ea9f42518e5de5884f88d5d06c..01f2b24c8a47d059f3a0ae0f9374b41d338658da 100644
--- a/source/blender/editors/space_clip/clip_utils.c
+++ b/source/blender/editors/space_clip/clip_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/space_clip.c b/source/blender/editors/space_clip/space_clip.c
index da1d2dea653915fb5036aaacc0b779fff998747a..444ed421083cfbf4378395f9617c17d61bc93347 100644
--- a/source/blender/editors/space_clip/space_clip.c
+++ b/source/blender/editors/space_clip/space_clip.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/tracking_ops.c b/source/blender/editors/space_clip/tracking_ops.c
index 313887ec8fd67aca8a2a4b96cf740f153b9eab64..0d1ff71e56763b6235060f2922ad4dd41bb0228f 100644
--- a/source/blender/editors/space_clip/tracking_ops.c
+++ b/source/blender/editors/space_clip/tracking_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/tracking_ops_detect.c b/source/blender/editors/space_clip/tracking_ops_detect.c
index 86ee94df731b244505d0c33d51faf81cdc5ee478..be6eeffeba78446c8d2e40fca8bc7739744d1262 100644
--- a/source/blender/editors/space_clip/tracking_ops_detect.c
+++ b/source/blender/editors/space_clip/tracking_ops_detect.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/tracking_ops_intern.h b/source/blender/editors/space_clip/tracking_ops_intern.h
index 5a9a84a235b7e6b2d7f3ee7d76b9e2ccc4d41a8f..29c862069f4129baee0dff16690d63db69de43e7 100644
--- a/source/blender/editors/space_clip/tracking_ops_intern.h
+++ b/source/blender/editors/space_clip/tracking_ops_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/tracking_ops_orient.c b/source/blender/editors/space_clip/tracking_ops_orient.c
index 04c335cdf5e978e1a5ac8fc3fdd3d3e548ccecc0..d3b818fba43f303731c900b1937c3c9df62c7022 100644
--- a/source/blender/editors/space_clip/tracking_ops_orient.c
+++ b/source/blender/editors/space_clip/tracking_ops_orient.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/tracking_ops_plane.c b/source/blender/editors/space_clip/tracking_ops_plane.c
index 964b59babee9baed31c6dfa87ca7c33e5ee18d39..ed07b3cbcc93a14d99587d9cf69eb0c22f163b1d 100644
--- a/source/blender/editors/space_clip/tracking_ops_plane.c
+++ b/source/blender/editors/space_clip/tracking_ops_plane.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/tracking_ops_solve.c b/source/blender/editors/space_clip/tracking_ops_solve.c
index 58f9b307ef9d62587e5bbc7cd9cc9304b4cb78e5..bfa45053e96abaf5e3a6186c19cc6cf37f20df9c 100644
--- a/source/blender/editors/space_clip/tracking_ops_solve.c
+++ b/source/blender/editors/space_clip/tracking_ops_solve.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/tracking_ops_stabilize.c b/source/blender/editors/space_clip/tracking_ops_stabilize.c
index d0b4d18c6d9c1280a80286b169d8f17281523ade..f99db4ffb7a5984f3a2826a345ffb5add1be0468 100644
--- a/source/blender/editors/space_clip/tracking_ops_stabilize.c
+++ b/source/blender/editors/space_clip/tracking_ops_stabilize.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/tracking_ops_track.c b/source/blender/editors/space_clip/tracking_ops_track.c
index 0e78a3e9a1efdb19842e950ce7c7b881c56126d6..f9cbce40deb907149e6941cda77bddcf685ca907 100644
--- a/source/blender/editors/space_clip/tracking_ops_track.c
+++ b/source/blender/editors/space_clip/tracking_ops_track.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/tracking_ops_utils.c b/source/blender/editors/space_clip/tracking_ops_utils.c
index 0f6bd6e039a3b68521293686913eef119c14778a..74a9b2e2ed6d53d70f4001293cf2365515c8e801 100644
--- a/source/blender/editors/space_clip/tracking_ops_utils.c
+++ b/source/blender/editors/space_clip/tracking_ops_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_clip/tracking_select.c b/source/blender/editors/space_clip/tracking_select.c
index 73a73eb791185d610fc01ec922cfa842fe1085d5..5f940b817a970535b809ceeb8e33ec35fd7b1ddb 100644
--- a/source/blender/editors/space_clip/tracking_select.c
+++ b/source/blender/editors/space_clip/tracking_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spclip
diff --git a/source/blender/editors/space_console/CMakeLists.txt b/source/blender/editors/space_console/CMakeLists.txt
index e5aedd0d0de8bbfa4a1f54701802f3527accf2d3..841c21f12e7ce51a0ded3f5951b775d14aaeeed0 100644
--- a/source/blender/editors/space_console/CMakeLists.txt
+++ b/source/blender/editors/space_console/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_console/console_draw.c b/source/blender/editors/space_console/console_draw.c
index 7e3dbcfefa4fd8778b842abb55cbcfff83eec3db..140dc4c1d40d4d54a05389e668d89b778d88123f 100644
--- a/source/blender/editors/space_console/console_draw.c
+++ b/source/blender/editors/space_console/console_draw.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spconsole
diff --git a/source/blender/editors/space_console/console_intern.h b/source/blender/editors/space_console/console_intern.h
index d4cb8363266b400ea0ae1e1e74cc4b207d3fcdde..bd9191bad76dd3b79c1d4344ae7d2e88da3b1976 100644
--- a/source/blender/editors/space_console/console_intern.h
+++ b/source/blender/editors/space_console/console_intern.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spconsole
diff --git a/source/blender/editors/space_console/console_ops.c b/source/blender/editors/space_console/console_ops.c
index c6fb2560dc0e71587c6dbb00299bdc8b061a56e1..ba0b3a59e24d72cc4d830ed50004861ddab8a87f 100644
--- a/source/blender/editors/space_console/console_ops.c
+++ b/source/blender/editors/space_console/console_ops.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spconsole
diff --git a/source/blender/editors/space_console/space_console.c b/source/blender/editors/space_console/space_console.c
index e66c3898d04ae93601084a6fd1f235f2b96216e9..d051f14d26439dde2b04331fa9101e43bd44f7f2 100644
--- a/source/blender/editors/space_console/space_console.c
+++ b/source/blender/editors/space_console/space_console.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spconsole
diff --git a/source/blender/editors/space_file/CMakeLists.txt b/source/blender/editors/space_file/CMakeLists.txt
index 1df0c9c44095ab813a32c80654b580353c1beaef..7d1af256c69cc162c2f82f4339452a89fbe0d972 100644
--- a/source/blender/editors/space_file/CMakeLists.txt
+++ b/source/blender/editors/space_file/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../asset
diff --git a/source/blender/editors/space_file/asset_catalog_tree_view.cc b/source/blender/editors/space_file/asset_catalog_tree_view.cc
index 4107669630fcabf7c30656899c0ade00fcf5dd59..e5a4919f548902b316665a02848afefb43d58f8d 100644
--- a/source/blender/editors/space_file/asset_catalog_tree_view.cc
+++ b/source/blender/editors/space_file/asset_catalog_tree_view.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spfile
diff --git a/source/blender/editors/space_file/file_draw.c b/source/blender/editors/space_file/file_draw.c
index 14c786e5deaede62890368be9e28164431306042..b7286c7794c3fd1e5c7240ee0bae2cdf4a3d9f42 100644
--- a/source/blender/editors/space_file/file_draw.c
+++ b/source/blender/editors/space_file/file_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spfile
diff --git a/source/blender/editors/space_file/file_indexer.cc b/source/blender/editors/space_file/file_indexer.cc
index 95e0afd7a1e5c0e5beb58d3b515aac3b917f097b..7c2ec1a30fdbaad84be1fecbea243afe37d966ce 100644
--- a/source/blender/editors/space_file/file_indexer.cc
+++ b/source/blender/editors/space_file/file_indexer.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edfile
diff --git a/source/blender/editors/space_file/file_indexer.h b/source/blender/editors/space_file/file_indexer.h
index ea42f10498b1bca2ac5e13855ed89325aaf60115..c47537db8157aac91a5982f2ac18f6d70c7f3a65 100644
--- a/source/blender/editors/space_file/file_indexer.h
+++ b/source/blender/editors/space_file/file_indexer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edfile
diff --git a/source/blender/editors/space_file/file_intern.h b/source/blender/editors/space_file/file_intern.h
index bd55e6f78abd356f710c8ed0449e0ae27708b74f..1ee6445f4ba0925de1eba078eab75e7a76796442 100644
--- a/source/blender/editors/space_file/file_intern.h
+++ b/source/blender/editors/space_file/file_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spfile
diff --git a/source/blender/editors/space_file/file_ops.c b/source/blender/editors/space_file/file_ops.c
index a1472a2c1b3e5416cb3d22ce1494bf45370f9a71..c859cad1c27130c83607d2c8d7fa8e8ba4cccfb9 100644
--- a/source/blender/editors/space_file/file_ops.c
+++ b/source/blender/editors/space_file/file_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spfile
diff --git a/source/blender/editors/space_file/file_panels.c b/source/blender/editors/space_file/file_panels.c
index 7da9f65a1a2d57dc5ca6390765a78dce10d2da3c..f2ebc0bb94f1cd4329ef6aa472d0c2161269f90d 100644
--- a/source/blender/editors/space_file/file_panels.c
+++ b/source/blender/editors/space_file/file_panels.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spfile
diff --git a/source/blender/editors/space_file/file_utils.c b/source/blender/editors/space_file/file_utils.c
index fbe2426021b46f353a5306af370efb54e8b8679c..455cbf0da2fde1a791fbcdebb6f3c2f46133c1d9 100644
--- a/source/blender/editors/space_file/file_utils.c
+++ b/source/blender/editors/space_file/file_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spfile
diff --git a/source/blender/editors/space_file/filelist.c b/source/blender/editors/space_file/filelist.c
index 6be17bbd35505d5bdece8fa4e73e417a3253e75f..3b3d968aed6bea7f7f7d172e7bd59d9927878137 100644
--- a/source/blender/editors/space_file/filelist.c
+++ b/source/blender/editors/space_file/filelist.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spfile
diff --git a/source/blender/editors/space_file/filelist.h b/source/blender/editors/space_file/filelist.h
index 696986d4660f76a75f1ff2c259e2616ffc1eb38e..4c1ae79eb2248a3edd32cd698e8e1dcda97cdf36 100644
--- a/source/blender/editors/space_file/filelist.h
+++ b/source/blender/editors/space_file/filelist.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spfile
diff --git a/source/blender/editors/space_file/filesel.c b/source/blender/editors/space_file/filesel.c
index f9783d1b19f1d7462afbe85e29fab9c3763ce106..7d2745403ab717f53785c1fbdd7ff042bab1973e 100644
--- a/source/blender/editors/space_file/filesel.c
+++ b/source/blender/editors/space_file/filesel.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spfile
diff --git a/source/blender/editors/space_file/fsmenu.c b/source/blender/editors/space_file/fsmenu.c
index e95e3bef8a85149e70d50bbad259fbc30d490b33..988ba7728f169f001b44484e596944a97eaff631 100644
--- a/source/blender/editors/space_file/fsmenu.c
+++ b/source/blender/editors/space_file/fsmenu.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spfile
diff --git a/source/blender/editors/space_file/fsmenu.h b/source/blender/editors/space_file/fsmenu.h
index 0915c9a5a2fc993c774c52c07b316fdf96aeb8fe..861c37ecaa1ce6ad347e8852874ff3e21097c28b 100644
--- a/source/blender/editors/space_file/fsmenu.h
+++ b/source/blender/editors/space_file/fsmenu.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spfile
diff --git a/source/blender/editors/space_file/space_file.c b/source/blender/editors/space_file/space_file.c
index 470128f61bd2b2134f015c195b6cc8de54ff4127..7b3b87f45720d380291a227feef711818cd6d504 100644
--- a/source/blender/editors/space_file/space_file.c
+++ b/source/blender/editors/space_file/space_file.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spfile
diff --git a/source/blender/editors/space_graph/CMakeLists.txt b/source/blender/editors/space_graph/CMakeLists.txt
index 2e6e6971ce93532c33ef1fcc540550faa1eef012..a087b873674118021dcc3e9f00c49f05841a0dea 100644
--- a/source/blender/editors/space_graph/CMakeLists.txt
+++ b/source/blender/editors/space_graph/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_graph/graph_buttons.c b/source/blender/editors/space_graph/graph_buttons.c
index 41f74b6ade9d0e7c8869840f3efbb2c4c3e94201..2bb743833d1a151765a5a4c398b383240254e6d5 100644
--- a/source/blender/editors/space_graph/graph_buttons.c
+++ b/source/blender/editors/space_graph/graph_buttons.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spgraph
diff --git a/source/blender/editors/space_graph/graph_draw.c b/source/blender/editors/space_graph/graph_draw.c
index 3a2593cc5435b36520ce49d194cd5d73486aa1cb..a946ce2213918e5fa1c45b4e6f8b97a828afcf85 100644
--- a/source/blender/editors/space_graph/graph_draw.c
+++ b/source/blender/editors/space_graph/graph_draw.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. */
 
 /** \file
  * \ingroup spgraph
diff --git a/source/blender/editors/space_graph/graph_edit.c b/source/blender/editors/space_graph/graph_edit.c
index 63de7fb570e1e0a4dc26d60673b65ddc39a40693..b030d0778fa625693a9c4a855674415b18b3127d 100644
--- a/source/blender/editors/space_graph/graph_edit.c
+++ b/source/blender/editors/space_graph/graph_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spgraph
diff --git a/source/blender/editors/space_graph/graph_intern.h b/source/blender/editors/space_graph/graph_intern.h
index a59fb63dd2296ca6c879ce039f3bdecaad2f9095..fe8005892cfec18d877713e6f804788ba8b1bf89 100644
--- a/source/blender/editors/space_graph/graph_intern.h
+++ b/source/blender/editors/space_graph/graph_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spgraph
diff --git a/source/blender/editors/space_graph/graph_ops.c b/source/blender/editors/space_graph/graph_ops.c
index 0cebc6eb586e153779b68f2084fb8e53eac4fec1..b00e069470d640a32e961f6f1030800fe3632943 100644
--- a/source/blender/editors/space_graph/graph_ops.c
+++ b/source/blender/editors/space_graph/graph_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spgraph
diff --git a/source/blender/editors/space_graph/graph_select.c b/source/blender/editors/space_graph/graph_select.c
index 29eb5b43e6c5c9266bda59273b9c9e5b31155019..9e7f0d17ac4ae98c3a091b9c528338f22d56e565 100644
--- a/source/blender/editors/space_graph/graph_select.c
+++ b/source/blender/editors/space_graph/graph_select.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup spgraph
diff --git a/source/blender/editors/space_graph/graph_slider_ops.c b/source/blender/editors/space_graph/graph_slider_ops.c
index cfaea33605acefe5274086916b68cb3939f358e5..1006ba4b3f4c804192adcea7f078eae81e10f4c1 100644
--- a/source/blender/editors/space_graph/graph_slider_ops.c
+++ b/source/blender/editors/space_graph/graph_slider_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spgraph
diff --git a/source/blender/editors/space_graph/graph_utils.c b/source/blender/editors/space_graph/graph_utils.c
index d78af4c4bcf0c200118e5441ea7e1b92569372e9..4351186dc6f3d5075d86e623ea797bece4030599 100644
--- a/source/blender/editors/space_graph/graph_utils.c
+++ b/source/blender/editors/space_graph/graph_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spgraph
diff --git a/source/blender/editors/space_graph/graph_view.c b/source/blender/editors/space_graph/graph_view.c
index a2f31a01a703e79c4e13128320e30b3b03e4753f..18465018d355400dea15a5c2f929ec1f93add952 100644
--- a/source/blender/editors/space_graph/graph_view.c
+++ b/source/blender/editors/space_graph/graph_view.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spgraph
diff --git a/source/blender/editors/space_graph/space_graph.c b/source/blender/editors/space_graph/space_graph.c
index 7d5e8836490ca61532ec65af5c17914998cbf185..27ac34ba34638d2a806ca31b169dc32c4093d193 100644
--- a/source/blender/editors/space_graph/space_graph.c
+++ b/source/blender/editors/space_graph/space_graph.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spgraph
diff --git a/source/blender/editors/space_image/CMakeLists.txt b/source/blender/editors/space_image/CMakeLists.txt
index 25d0e02ecc064383805187bdc3ad74585340e91e..28b357478f20f54925f093b6b3a5a7490b8d3aa9 100644
--- a/source/blender/editors/space_image/CMakeLists.txt
+++ b/source/blender/editors/space_image/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_image/image_buttons.c b/source/blender/editors/space_image/image_buttons.c
index 4b8388a00023d82f6f3e2541199b00c59ee42307..6f3d40abce1ef14d8f1118b5c29421b4dbc8bf62 100644
--- a/source/blender/editors/space_image/image_buttons.c
+++ b/source/blender/editors/space_image/image_buttons.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spimage
diff --git a/source/blender/editors/space_image/image_draw.c b/source/blender/editors/space_image/image_draw.c
index 8858df3323f555068207c89347759d96be8e68c6..cc86852e0d1f039d288ef05a9f7c4b843933d260 100644
--- a/source/blender/editors/space_image/image_draw.c
+++ b/source/blender/editors/space_image/image_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spimage
diff --git a/source/blender/editors/space_image/image_edit.c b/source/blender/editors/space_image/image_edit.c
index 470cff20718be083228c7c9be6a5cddc7af925a1..5c3868568279f39e3f8ab88c76bd2ee95a2adb38 100644
--- a/source/blender/editors/space_image/image_edit.c
+++ b/source/blender/editors/space_image/image_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spimage
diff --git a/source/blender/editors/space_image/image_intern.h b/source/blender/editors/space_image/image_intern.h
index 63c537467f72f4a4e29af6a6b7c7000c60395a7e..2322420069e7eba95ade52ab630a19e0c89d4652 100644
--- a/source/blender/editors/space_image/image_intern.h
+++ b/source/blender/editors/space_image/image_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spimage
diff --git a/source/blender/editors/space_image/image_ops.c b/source/blender/editors/space_image/image_ops.c
index b1ca8505b8a4ae58f4b8aecd930e213340e8a51f..aed4a2ccabdc2a932ba358adac550aec1b66f9ad 100644
--- a/source/blender/editors/space_image/image_ops.c
+++ b/source/blender/editors/space_image/image_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spimage
diff --git a/source/blender/editors/space_image/image_sequence.c b/source/blender/editors/space_image/image_sequence.c
index 84b85b396fe388e7f2c5e2e2a80e56727ac607f9..abe2a359a69bd9a527bd98c663eb37150fd0727b 100644
--- a/source/blender/editors/space_image/image_sequence.c
+++ b/source/blender/editors/space_image/image_sequence.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spimage
diff --git a/source/blender/editors/space_image/image_undo.c b/source/blender/editors/space_image/image_undo.c
index 73993606a14edbaa16585214d627cf641b167b3a..e9997fe8d4263542a7ee39f021e67f21ef8447de 100644
--- a/source/blender/editors/space_image/image_undo.c
+++ b/source/blender/editors/space_image/image_undo.c
@@ -1,17 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spimage
diff --git a/source/blender/editors/space_image/space_image.c b/source/blender/editors/space_image/space_image.c
index eb5b6104a796a3b390375d103428c005b4b0c071..03ec018fbe86c9b805524604ee0d857d1b5f41cf 100644
--- a/source/blender/editors/space_image/space_image.c
+++ b/source/blender/editors/space_image/space_image.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spimage
diff --git a/source/blender/editors/space_info/CMakeLists.txt b/source/blender/editors/space_info/CMakeLists.txt
index fb17a6c97090ad321ca6922738b612b724ff8b42..77c84d4a3c6c2e011af1620a3f70f4b146510038 100644
--- a/source/blender/editors/space_info/CMakeLists.txt
+++ b/source/blender/editors/space_info/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_info/info_draw.c b/source/blender/editors/space_info/info_draw.c
index 9524c2a1d8aea55e9417193b8612f548ab7935a2..812df2fc6cc7bf3056a844607aa4793ceff1d699 100644
--- a/source/blender/editors/space_info/info_draw.c
+++ b/source/blender/editors/space_info/info_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spinfo
diff --git a/source/blender/editors/space_info/info_intern.h b/source/blender/editors/space_info/info_intern.h
index a19ebe5ef0440ebf17193b8d5f85d1bcd97b4e1b..def210e828706c1b69ea777d66cb788c73a86116 100644
--- a/source/blender/editors/space_info/info_intern.h
+++ b/source/blender/editors/space_info/info_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spinfo
diff --git a/source/blender/editors/space_info/info_ops.c b/source/blender/editors/space_info/info_ops.c
index 2a797fd1a78adef44dd43f5ed4e5c55dbbc1f041..79226ca47930c77bab0356f2289ace622452c5cd 100644
--- a/source/blender/editors/space_info/info_ops.c
+++ b/source/blender/editors/space_info/info_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spinfo
diff --git a/source/blender/editors/space_info/info_report.c b/source/blender/editors/space_info/info_report.c
index ce17450549e688d20a1ca28dea33872ba9b5d0f7..603c7c9ad37e9750c1cdd5868175f9bb4dd5e206 100644
--- a/source/blender/editors/space_info/info_report.c
+++ b/source/blender/editors/space_info/info_report.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spinfo
diff --git a/source/blender/editors/space_info/info_stats.cc b/source/blender/editors/space_info/info_stats.cc
index a1eacc2bc3a6df94178ddc6f563420df5c29ed17..da899ef4c9a5511ee7bede425a3d3cb7975d1d29 100644
--- a/source/blender/editors/space_info/info_stats.cc
+++ b/source/blender/editors/space_info/info_stats.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spinfo
diff --git a/source/blender/editors/space_info/space_info.c b/source/blender/editors/space_info/space_info.c
index 1d28aace7f21b0b40c1ab0e94f6001630d88412a..73d81c93981cf315179898b09eff556ed809d88c 100644
--- a/source/blender/editors/space_info/space_info.c
+++ b/source/blender/editors/space_info/space_info.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spinfo
diff --git a/source/blender/editors/space_info/textview.c b/source/blender/editors/space_info/textview.c
index cc14abd8bb367cd6c3d78419755c1882f01fc127..8fc61f78a6c7a1a37adb67d1c4d8f19194779d46 100644
--- a/source/blender/editors/space_info/textview.c
+++ b/source/blender/editors/space_info/textview.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spinfo
diff --git a/source/blender/editors/space_info/textview.h b/source/blender/editors/space_info/textview.h
index 38c073a328a5aed5a03c58d6a5524beda08baa18..6cd9f368a0d5ba54c5a85b45cf65e1f064feadf9 100644
--- a/source/blender/editors/space_info/textview.h
+++ b/source/blender/editors/space_info/textview.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spinfo
diff --git a/source/blender/editors/space_nla/CMakeLists.txt b/source/blender/editors/space_nla/CMakeLists.txt
index 5326f1cce2b750f49386be1f20f676ad7d009d52..3447bbad3965f5bdcb7f567d58e2cfd40f9c3838 100644
--- a/source/blender/editors/space_nla/CMakeLists.txt
+++ b/source/blender/editors/space_nla/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_nla/nla_buttons.c b/source/blender/editors/space_nla/nla_buttons.c
index 81932589663ed73b1f19ba087f016f11f8bdafe7..3825407fead36d40e417f17918bd9b4e9c1b0004 100644
--- a/source/blender/editors/space_nla/nla_buttons.c
+++ b/source/blender/editors/space_nla/nla_buttons.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnla
diff --git a/source/blender/editors/space_nla/nla_channels.c b/source/blender/editors/space_nla/nla_channels.c
index 47af7a66f6f7b11937e8bcd378b91c1b5063accd..4a507aa3bf234dcc1af0a1db0e1a2c65be4cc9c8 100644
--- a/source/blender/editors/space_nla/nla_channels.c
+++ b/source/blender/editors/space_nla/nla_channels.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup spnla
diff --git a/source/blender/editors/space_nla/nla_draw.c b/source/blender/editors/space_nla/nla_draw.c
index 7dfe0e89e90bd8bd7607ad372be20d8904faf293..eda9f89b51cb5d25d5d32c2432542910a82e44e4 100644
--- a/source/blender/editors/space_nla/nla_draw.c
+++ b/source/blender/editors/space_nla/nla_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup spnla
diff --git a/source/blender/editors/space_nla/nla_edit.c b/source/blender/editors/space_nla/nla_edit.c
index 28041c0389f628d2456c2b9b28d8763c2bc62822..e94221fab042b509beb00852f18b19898ff8b33b 100644
--- a/source/blender/editors/space_nla/nla_edit.c
+++ b/source/blender/editors/space_nla/nla_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup spnla
diff --git a/source/blender/editors/space_nla/nla_intern.h b/source/blender/editors/space_nla/nla_intern.h
index dd322dd2ad1ca8c843d5a024900d3034675c2c4d..33aa30f32da1a905735e69a3fb01aba70ac10f10 100644
--- a/source/blender/editors/space_nla/nla_intern.h
+++ b/source/blender/editors/space_nla/nla_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup spnla
diff --git a/source/blender/editors/space_nla/nla_ops.c b/source/blender/editors/space_nla/nla_ops.c
index 33449bed79863172ed86dedca996b0e07f44d594..902e7a176a3d78265f2326aef1dd9b1afdd4b7cb 100644
--- a/source/blender/editors/space_nla/nla_ops.c
+++ b/source/blender/editors/space_nla/nla_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup spnla
diff --git a/source/blender/editors/space_nla/nla_select.c b/source/blender/editors/space_nla/nla_select.c
index 246c3e0156a7482c5990361d452e80f2a72e6cfc..cb9b67902391fd510c0da09c1d693eac626c56c0 100644
--- a/source/blender/editors/space_nla/nla_select.c
+++ b/source/blender/editors/space_nla/nla_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup spnla
diff --git a/source/blender/editors/space_nla/space_nla.c b/source/blender/editors/space_nla/space_nla.c
index 962b5151661bb070d31a3bd2d401176174187552..3a881363906e7698d2bd3be9912e7ca86013a8e4 100644
--- a/source/blender/editors/space_nla/space_nla.c
+++ b/source/blender/editors/space_nla/space_nla.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnla
diff --git a/source/blender/editors/space_node/CMakeLists.txt b/source/blender/editors/space_node/CMakeLists.txt
index 15e0d04c8fa0619c455a59fb4f5001eb8542f2d8..7dc6da3fa9e36e1195c2a809d7e82161d198ed8c 100644
--- a/source/blender/editors/space_node/CMakeLists.txt
+++ b/source/blender/editors/space_node/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_node/drawnode.cc b/source/blender/editors/space_node/drawnode.cc
index 30f2cc970bde962da60b2fb470e12a48c71da5c9..28ac7a34fa8bd0a8458df967a63540d3443f3b54 100644
--- a/source/blender/editors/space_node/drawnode.cc
+++ b/source/blender/editors/space_node/drawnode.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/space_node/link_drag_search.cc b/source/blender/editors/space_node/link_drag_search.cc
index 45126e9cee0db347c05d6acec0eb1072582a6ef1..2484318e61225687f42f0170d61f14aa5095f320 100644
--- a/source/blender/editors/space_node/link_drag_search.cc
+++ b/source/blender/editors/space_node/link_drag_search.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_listbase.h"
 #include "BLI_string_search.h"
diff --git a/source/blender/editors/space_node/node_add.cc b/source/blender/editors/space_node/node_add.cc
index 8e88f1fad5a627b65c43eb9495a00d067c4c90cc..859f142d5fd98675f01149ba4b544da85b612549 100644
--- a/source/blender/editors/space_node/node_add.cc
+++ b/source/blender/editors/space_node/node_add.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/space_node/node_context_path.cc b/source/blender/editors/space_node/node_context_path.cc
index cab7cbf10be3a1348a53df94483e51b42322817f..a76988a60d033ee2a6f952bf0e73422f806e5c14 100644
--- a/source/blender/editors/space_node/node_context_path.cc
+++ b/source/blender/editors/space_node/node_context_path.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/space_node/node_draw.cc b/source/blender/editors/space_node/node_draw.cc
index e290316af1f1a5859c5772b1542d3ee3cf6a5e15..455eceed293d180c748cd7b477d29431ca396be7 100644
--- a/source/blender/editors/space_node/node_draw.cc
+++ b/source/blender/editors/space_node/node_draw.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/space_node/node_edit.cc b/source/blender/editors/space_node/node_edit.cc
index aa27edd77a7fbc88eae3779084aca5e219cff840..7b7aaef518bec2f88bffceb9ecfc8d52442bb348 100644
--- a/source/blender/editors/space_node/node_edit.cc
+++ b/source/blender/editors/space_node/node_edit.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/space_node/node_geometry_attribute_search.cc b/source/blender/editors/space_node/node_geometry_attribute_search.cc
index 542e6fd748f8b0942df44d221f670659d8f7b9b5..5a6fe911a05f4a7b2ba72b9751d0d1846fc5ca7f 100644
--- a/source/blender/editors/space_node/node_geometry_attribute_search.cc
+++ b/source/blender/editors/space_node/node_geometry_attribute_search.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_index_range.hh"
 #include "BLI_listbase.h"
diff --git a/source/blender/editors/space_node/node_gizmo.cc b/source/blender/editors/space_node/node_gizmo.cc
index 8c60d100b2688da60e0f5b0473216d9dc337ec0b..9e53340a792d86a59c252b9a6528f338fd35191a 100644
--- a/source/blender/editors/space_node/node_gizmo.cc
+++ b/source/blender/editors/space_node/node_gizmo.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/space_node/node_group.cc b/source/blender/editors/space_node/node_group.cc
index 3d3f8378916a5518d05d9dbbfd1049f168d0b598..3e1842834f9b75ac2da216133304ee641a8346ff 100644
--- a/source/blender/editors/space_node/node_group.cc
+++ b/source/blender/editors/space_node/node_group.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/space_node/node_intern.hh b/source/blender/editors/space_node/node_intern.hh
index 51825f5bd3914f434c13a1327ee41493961bc362..8f0ff1ccd23b0913e66d2890d5c9908614a2b4b1 100644
--- a/source/blender/editors/space_node/node_intern.hh
+++ b/source/blender/editors/space_node/node_intern.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/space_node/node_ops.cc b/source/blender/editors/space_node/node_ops.cc
index 2ca475f69483b7f58be11ca6adf50e19769c99aa..e990329930012f239741cbc01bc4f45c2af2866c 100644
--- a/source/blender/editors/space_node/node_ops.cc
+++ b/source/blender/editors/space_node/node_ops.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/space_node/node_relationships.cc b/source/blender/editors/space_node/node_relationships.cc
index d92f86c2cfc1147c674027808ed00d1188105b23..1cfa932356b6eb4e1a11e9cef050006b7c1205c1 100644
--- a/source/blender/editors/space_node/node_relationships.cc
+++ b/source/blender/editors/space_node/node_relationships.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/space_node/node_select.cc b/source/blender/editors/space_node/node_select.cc
index 6b0fa2cc37c7b996eed87fa1443cb82b3360599f..9d30ebca6d64c46309dfc117aa01f8929477e2f5 100644
--- a/source/blender/editors/space_node/node_select.cc
+++ b/source/blender/editors/space_node/node_select.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/space_node/node_templates.cc b/source/blender/editors/space_node/node_templates.cc
index 113e2bd3bb3bf6cf0a3ca6653d7d78786900e1b6..47e412ef191c6744be029defbc234c51cd6d71a3 100644
--- a/source/blender/editors/space_node/node_templates.cc
+++ b/source/blender/editors/space_node/node_templates.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edinterface
diff --git a/source/blender/editors/space_node/node_view.cc b/source/blender/editors/space_node/node_view.cc
index 9d99709a780358289b416b89cea408229e85d974..36fdcf37fd7a8428baed1d04c206c99f8ca37292 100644
--- a/source/blender/editors/space_node/node_view.cc
+++ b/source/blender/editors/space_node/node_view.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/space_node/space_node.cc b/source/blender/editors/space_node/space_node.cc
index 4d0c88a534315df659c9b8a828381d46b63c6da3..7027ed36aa758b7660b6813b99955aa867c92d71 100644
--- a/source/blender/editors/space_node/space_node.cc
+++ b/source/blender/editors/space_node/space_node.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spnode
diff --git a/source/blender/editors/space_outliner/CMakeLists.txt b/source/blender/editors/space_outliner/CMakeLists.txt
index d97f48bcb683c87b3e00fe2ed1f810b940c61c6a..a91de37fa76efc3edd0ee6030f5d6d3d13a32155 100644
--- a/source/blender/editors/space_outliner/CMakeLists.txt
+++ b/source/blender/editors/space_outliner/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_outliner/outliner_collections.cc b/source/blender/editors/space_outliner/outliner_collections.cc
index 8d60a6088d35e73a1899466c4cc7d3b3b14a0b86..765661aa9d56b1cf62c45cdeb07251a1f490fe2e 100644
--- a/source/blender/editors/space_outliner/outliner_collections.cc
+++ b/source/blender/editors/space_outliner/outliner_collections.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/outliner_context.cc b/source/blender/editors/space_outliner/outliner_context.cc
index d3b99928ec1e71921ac65101df19df3c5d6aa20b..d07b66418365c1b59e74d4949c697acfd9de67b7 100644
--- a/source/blender/editors/space_outliner/outliner_context.cc
+++ b/source/blender/editors/space_outliner/outliner_context.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/outliner_dragdrop.cc b/source/blender/editors/space_outliner/outliner_dragdrop.cc
index 3745894d6305b13af64acfbb8de663de01d82046..0d8ee76d2f0cc81a9389ea7d5fdf7f3fc53d7b36 100644
--- a/source/blender/editors/space_outliner/outliner_dragdrop.cc
+++ b/source/blender/editors/space_outliner/outliner_dragdrop.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/outliner_draw.cc b/source/blender/editors/space_outliner/outliner_draw.cc
index 13c273d1ec9e122547dfd40258eb4a464f11c431..dd7ca128282d22b01cc7762e7ef4a07e08e6c1c3 100644
--- a/source/blender/editors/space_outliner/outliner_draw.cc
+++ b/source/blender/editors/space_outliner/outliner_draw.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/outliner_edit.cc b/source/blender/editors/space_outliner/outliner_edit.cc
index b41b260b14ae2604a3ccedd776622b8f81f4c2fb..a6ac2a5a1f31bf01203eb72a5f7f2206c78dbaf3 100644
--- a/source/blender/editors/space_outliner/outliner_edit.cc
+++ b/source/blender/editors/space_outliner/outliner_edit.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/outliner_intern.hh b/source/blender/editors/space_outliner/outliner_intern.hh
index efbd8a32716c2e3314b805b23c2c56ebe2028ab1..bba4bac0e37fa23f985535cfe3ee673583b3f050 100644
--- a/source/blender/editors/space_outliner/outliner_intern.hh
+++ b/source/blender/editors/space_outliner/outliner_intern.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/outliner_ops.cc b/source/blender/editors/space_outliner/outliner_ops.cc
index 4664a3150a126b0d257f2839d42344d16a3e4101..69a691aeb50315cf4773cfa12718ab47846d41f7 100644
--- a/source/blender/editors/space_outliner/outliner_ops.cc
+++ b/source/blender/editors/space_outliner/outliner_ops.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/outliner_select.cc b/source/blender/editors/space_outliner/outliner_select.cc
index f256475c0dac3d72fd8ee295361cd91467c3c6d3..df10ce002c38dc6c2088b07ca406457c9b175c8a 100644
--- a/source/blender/editors/space_outliner/outliner_select.cc
+++ b/source/blender/editors/space_outliner/outliner_select.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/outliner_sync.cc b/source/blender/editors/space_outliner/outliner_sync.cc
index 74416024b036564c93577b13eb08c1d79cd5f77f..36bc7c31b91d8b71293a1d3db0a7eb706a043fd1 100644
--- a/source/blender/editors/space_outliner/outliner_sync.cc
+++ b/source/blender/editors/space_outliner/outliner_sync.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/outliner_tools.cc b/source/blender/editors/space_outliner/outliner_tools.cc
index 337649834a472dac60601fa3a0e5f6c946a3702c..18c37e08efffe5d9c69bf2cea9f94d2dbb151088 100644
--- a/source/blender/editors/space_outliner/outliner_tools.cc
+++ b/source/blender/editors/space_outliner/outliner_tools.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/outliner_tree.cc b/source/blender/editors/space_outliner/outliner_tree.cc
index 60f5437ad884021b87207f61d09dff60ca1068a5..1605d5874aec3be5609e4256eaca98331987224d 100644
--- a/source/blender/editors/space_outliner/outliner_tree.cc
+++ b/source/blender/editors/space_outliner/outliner_tree.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/outliner_utils.cc b/source/blender/editors/space_outliner/outliner_utils.cc
index 86b56a7ec12c92f8504cbfba88dc775c819517c6..b49a2416b38734ca5d0c8f9bca49c4ebca8d58b8 100644
--- a/source/blender/editors/space_outliner/outliner_utils.cc
+++ b/source/blender/editors/space_outliner/outliner_utils.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/space_outliner.cc b/source/blender/editors/space_outliner/space_outliner.cc
index 0fb17fa3f479c4599d388cc18696d9272b69b9f2..655010bb59f02a62c566119641814dad56e54e17 100644
--- a/source/blender/editors/space_outliner/space_outliner.cc
+++ b/source/blender/editors/space_outliner/space_outliner.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/common.cc b/source/blender/editors/space_outliner/tree/common.cc
index c6b5ee3b7efb26f79370bb0d9004003bca2d56e7..e33a8ddabb5c99cf352674690db003a55f0f7486 100644
--- a/source/blender/editors/space_outliner/tree/common.cc
+++ b/source/blender/editors/space_outliner/tree/common.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/common.hh b/source/blender/editors/space_outliner/tree/common.hh
index 1745bfa436e062a2fa7b622bded74678de814e70..96c1eb34354d8085df709de2418bb7d0d5f5dcd5 100644
--- a/source/blender/editors/space_outliner/tree/common.hh
+++ b/source/blender/editors/space_outliner/tree/common.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_display.cc b/source/blender/editors/space_outliner/tree/tree_display.cc
index d2b6fff69965758492de2e8a13eb9e8e4f2d0e95..6b68f1ee4a4051365c8d012d753a87ab867d32e0 100644
--- a/source/blender/editors/space_outliner/tree/tree_display.cc
+++ b/source/blender/editors/space_outliner/tree/tree_display.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_display.hh b/source/blender/editors/space_outliner/tree/tree_display.hh
index 68f0f9c562d6f090798aeabdaf08e5c319cd7698..bdca1954a9c27ff862580b67b0dfd1278fdb41c3 100644
--- a/source/blender/editors/space_outliner/tree/tree_display.hh
+++ b/source/blender/editors/space_outliner/tree/tree_display.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_display_data.cc b/source/blender/editors/space_outliner/tree/tree_display_data.cc
index 5c88e88bd3719265bdabc2c0d3f75269006ea884..bfeb8ce2bdcb6aa18c68cf6386d5e4a687ab595c 100644
--- a/source/blender/editors/space_outliner/tree/tree_display_data.cc
+++ b/source/blender/editors/space_outliner/tree/tree_display_data.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_display_libraries.cc b/source/blender/editors/space_outliner/tree/tree_display_libraries.cc
index 1d77e82612dc147779b155817bc77c76843c49be..0023b7c7b629805018532b4905b5f1aa34e6943c 100644
--- a/source/blender/editors/space_outliner/tree/tree_display_libraries.cc
+++ b/source/blender/editors/space_outliner/tree/tree_display_libraries.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_display_orphaned.cc b/source/blender/editors/space_outliner/tree/tree_display_orphaned.cc
index 587f807c40c770f119231a674ae403f9f8427b28..d5ecfd4edf33ac04103c03effdf560e723b55c11 100644
--- a/source/blender/editors/space_outliner/tree/tree_display_orphaned.cc
+++ b/source/blender/editors/space_outliner/tree/tree_display_orphaned.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_display_override_library.cc b/source/blender/editors/space_outliner/tree/tree_display_override_library.cc
index d9a0661d3b4653ffd88a79a1e9dbe23dd8084652..43d67ee106d208030ddd4817f46980eb7cdc639e 100644
--- a/source/blender/editors/space_outliner/tree/tree_display_override_library.cc
+++ b/source/blender/editors/space_outliner/tree/tree_display_override_library.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_display_scenes.cc b/source/blender/editors/space_outliner/tree/tree_display_scenes.cc
index ad66e8a7ee50d46517babae7e791a8c913412b47..9e00a425a5a0ed6ee03cba169112772660f39541 100644
--- a/source/blender/editors/space_outliner/tree/tree_display_scenes.cc
+++ b/source/blender/editors/space_outliner/tree/tree_display_scenes.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_display_sequencer.cc b/source/blender/editors/space_outliner/tree/tree_display_sequencer.cc
index 7c5137a72dd154fddee7eca75c2f4a1ded209a3e..c2739d876f42da31e4364473a6b1d99135a16bf9 100644
--- a/source/blender/editors/space_outliner/tree/tree_display_sequencer.cc
+++ b/source/blender/editors/space_outliner/tree/tree_display_sequencer.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_display_view_layer.cc b/source/blender/editors/space_outliner/tree/tree_display_view_layer.cc
index 73990b45562e9a99d31b564f2180ffec49836d4c..0ee5059a54d2f75c3538650d060af06d65f4057c 100644
--- a/source/blender/editors/space_outliner/tree/tree_display_view_layer.cc
+++ b/source/blender/editors/space_outliner/tree/tree_display_view_layer.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element.cc b/source/blender/editors/space_outliner/tree/tree_element.cc
index 5685d8964f551109caacf03ac37eb54444147f7f..3c2023d7905c46222e898dbb5361e78d4e11289f 100644
--- a/source/blender/editors/space_outliner/tree/tree_element.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element.hh b/source/blender/editors/space_outliner/tree/tree_element.hh
index aca5738b91a67bf7abc4776ef8a49f7fe06cfcb1..996f51eee822940d2e9273cf4ce1ec866827899b 100644
--- a/source/blender/editors/space_outliner/tree/tree_element.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_anim_data.cc b/source/blender/editors/space_outliner/tree/tree_element_anim_data.cc
index 41212f61d5d767212ef7a73e139b17ee0f4d4fb0..bb514cf6f3cd223f8571a09320ce348a241a9a5b 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_anim_data.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_anim_data.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_anim_data.hh b/source/blender/editors/space_outliner/tree/tree_element_anim_data.hh
index 95d08cd20b711d2e7bf017e85a6f2602ecf62826..956cf3dec485bfea076d0f45fcb7a3756fcb20bb 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_anim_data.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element_anim_data.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_collection.cc b/source/blender/editors/space_outliner/tree/tree_element_collection.cc
index 0a7ee21df157c2d70e064d9e6ba4dbf6986c870e..4a6615ffd5c392fdfef857c8dcdf79dae6202496 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_collection.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_collection.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_collection.hh b/source/blender/editors/space_outliner/tree/tree_element_collection.hh
index e9584d37dfed1fbfc696ebd1d2df3428753692eb..74b3014dc39c7838066336fa0403f5c0d739d2e2 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_collection.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element_collection.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_driver.cc b/source/blender/editors/space_outliner/tree/tree_element_driver.cc
index 49d7f91b557ed8a576dba2f2766774ca748e3a55..f8072d2814d99032e17bd91b23d9a8b68a91f079 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_driver.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_driver.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_driver.hh b/source/blender/editors/space_outliner/tree/tree_element_driver.hh
index 1925e3570be56c6463cab28fa0641e389bffde1e..053217e18ecc0a14819529944597c8e96feb58c9 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_driver.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element_driver.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_gpencil_layer.cc b/source/blender/editors/space_outliner/tree/tree_element_gpencil_layer.cc
index ead83ad69311548f569e44dee3d94def3d9851a1..3de45fdf2e84156438cd9b56b31accf726b1cba7 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_gpencil_layer.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_gpencil_layer.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_gpencil_layer.hh b/source/blender/editors/space_outliner/tree/tree_element_gpencil_layer.hh
index da57ef63f1f099ff0bffb55575697435a3167e78..0301afac33b013d7188c0435051406b9c4807aaa 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_gpencil_layer.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element_gpencil_layer.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_id.cc b/source/blender/editors/space_outliner/tree/tree_element_id.cc
index 3289cb8ac7648ac746019b3286e5e9fd8340eaab..e126b024d5264bf67b7ea711a0b68ffc6cc54c04 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_id.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_id.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_id.hh b/source/blender/editors/space_outliner/tree/tree_element_id.hh
index 9b5b955be0b64b626cb942302897520567393566..75dc7e737e2fce4cd1892d9e68060ed97361aa05 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_id.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element_id.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_id_library.cc b/source/blender/editors/space_outliner/tree/tree_element_id_library.cc
index b5fd67d48071dcd77a68d28e2f088deec9399591..0dcaec0385ae9e77d67c52034847638086e80ede 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_id_library.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_id_library.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_id_library.hh b/source/blender/editors/space_outliner/tree/tree_element_id_library.hh
index ce128b1a5ff2bd76bd7312033dc5db3a8682ea64..ed599cf04da97b1ea54f04931d26bed89fae440f 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_id_library.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element_id_library.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_id_scene.cc b/source/blender/editors/space_outliner/tree/tree_element_id_scene.cc
index c71d6786c6eb388e726dafe65f6ffa3bc7de9e90..328c19c56fd5630a3e585a3b593b622a68e1c6d1 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_id_scene.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_id_scene.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_id_scene.hh b/source/blender/editors/space_outliner/tree/tree_element_id_scene.hh
index 3340bacd3074f391fed0ed1d04b5569117f34692..a178e3e50f68d480d11a4bd16196a719180345cb 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_id_scene.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element_id_scene.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_nla.cc b/source/blender/editors/space_outliner/tree/tree_element_nla.cc
index 89ebee49192336fb3132c759ace75e73ea25fad6..df19b2e8f4b5a4a9d4f48da8e4a88a0b12b0c906 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_nla.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_nla.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_nla.hh b/source/blender/editors/space_outliner/tree/tree_element_nla.hh
index 7cbc868948399514f3b73f519d87f7b7e6ed5a0c..36ffe4e85c46412a0aaaa4066437ee121c84bd64 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_nla.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element_nla.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_overrides.cc b/source/blender/editors/space_outliner/tree/tree_element_overrides.cc
index ba1471625b9a5626715bcff3021afaec758e46aa..d59db4e870f8632557a9b313e7a572255ffffbb7 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_overrides.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_overrides.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_overrides.hh b/source/blender/editors/space_outliner/tree/tree_element_overrides.hh
index 0067db6ea56204157aee8bb83ec9bca3b95262e0..5d3d7b278aa16ed9bc1634e2ce93b2829cfe8280 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_overrides.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element_overrides.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_rna.cc b/source/blender/editors/space_outliner/tree/tree_element_rna.cc
index 7a9f1b6f0fabb1a05f397f4b6a9fcb990c101c28..abc7cd8f8ce2e181c86852d5923c4ce7a027691f 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_rna.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_rna.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_rna.hh b/source/blender/editors/space_outliner/tree/tree_element_rna.hh
index 1f107ddbf88d34ce050720e6442bb14b2a3f3880..c72e0c4426fe6c5557e7690485b011fb6af0c64e 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_rna.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element_rna.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_scene_objects.cc b/source/blender/editors/space_outliner/tree/tree_element_scene_objects.cc
index dad03d392fbd3c470cd85a53c1833f364682d89b..b47707e889171ad6ee3923845a1a8039285551f9 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_scene_objects.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_scene_objects.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_scene_objects.hh b/source/blender/editors/space_outliner/tree/tree_element_scene_objects.hh
index 7ce5a404f5c138b0a8298eea7fed2554a8edbe18..09183e607721ce2203acd0dda67720b621df7244 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_scene_objects.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element_scene_objects.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_seq.cc b/source/blender/editors/space_outliner/tree/tree_element_seq.cc
index 8d0b4c140c7d26c8abd84801cce7358e162fb39b..550a72d246d2f460b4ce821a70729fa7f0945e03 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_seq.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_seq.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_seq.hh b/source/blender/editors/space_outliner/tree/tree_element_seq.hh
index 2b334b5b7fa4bfe767b5f2077bf5ab79a622e045..22684c5d95221cac6e807e2efd97be33c0048ca5 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_seq.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element_seq.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_view_layer.cc b/source/blender/editors/space_outliner/tree/tree_element_view_layer.cc
index 65786ac89edc6fdf83f8c030298c79c771204411..da82854facb52569a564cb608c3faf7e40288b9e 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_view_layer.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_view_layer.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_view_layer.hh b/source/blender/editors/space_outliner/tree/tree_element_view_layer.hh
index 24e03b265dcea3aed14732c2d30c64b19946a49b..908fa58d4efdf5a4fe7fb3764c1c65da52f9feae 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_view_layer.hh
+++ b/source/blender/editors/space_outliner/tree/tree_element_view_layer.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spoutliner
diff --git a/source/blender/editors/space_script/CMakeLists.txt b/source/blender/editors/space_script/CMakeLists.txt
index f2dd39ea13d9d9036012f00ed327a4af3684e50b..8486fa0e872f5e479131addd0c5fa37f087b31b5 100644
--- a/source/blender/editors/space_script/CMakeLists.txt
+++ b/source/blender/editors/space_script/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_script/script_edit.c b/source/blender/editors/space_script/script_edit.c
index 13adf6bfc2d4ad7e7697bce4543276080ed3160c..e8c7590c1fe4def30c5fc096e962fa3ba3fd98ee 100644
--- a/source/blender/editors/space_script/script_edit.c
+++ b/source/blender/editors/space_script/script_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spscript
diff --git a/source/blender/editors/space_script/script_intern.h b/source/blender/editors/space_script/script_intern.h
index 5d73bca350c45e2737a84e9818b656c3ddc7c66d..ef508de8f02b01192f0b00574a60ea6e11174f1b 100644
--- a/source/blender/editors/space_script/script_intern.h
+++ b/source/blender/editors/space_script/script_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spscript
diff --git a/source/blender/editors/space_script/script_ops.c b/source/blender/editors/space_script/script_ops.c
index 4b557daf36aa51874a7bb6d4132a34de62a5c032..e9b43a95dbdea6b01dbd206d21cf151a2f343659 100644
--- a/source/blender/editors/space_script/script_ops.c
+++ b/source/blender/editors/space_script/script_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spscript
diff --git a/source/blender/editors/space_script/space_script.c b/source/blender/editors/space_script/space_script.c
index 4c4cba2ac58a9173a642143cd42449fe1f454a74..a623b98f1b12143a1550d33599a32ce010532e44 100644
--- a/source/blender/editors/space_script/space_script.c
+++ b/source/blender/editors/space_script/space_script.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spscript
diff --git a/source/blender/editors/space_sequencer/CMakeLists.txt b/source/blender/editors/space_sequencer/CMakeLists.txt
index d93dc0ac0c059768f35041d28c66c0cef98ecd25..0be40c62da34fff53e37084192233728dfdcd5e7 100644
--- a/source/blender/editors/space_sequencer/CMakeLists.txt
+++ b/source/blender/editors/space_sequencer/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_sequencer/sequencer_add.c b/source/blender/editors/space_sequencer/sequencer_add.c
index 439a37631e08b4254bdde1f8944dda3e63388393..f371c663416e98326de23e98fa3048072a618653 100644
--- a/source/blender/editors/space_sequencer/sequencer_add.c
+++ b/source/blender/editors/space_sequencer/sequencer_add.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_sequencer/sequencer_buttons.c b/source/blender/editors/space_sequencer/sequencer_buttons.c
index 4ece7f6a48107598f1d972b5c647da1da7a3da0b..e6ede6371668a8b656149ef59d0c7891ee77da75 100644
--- a/source/blender/editors/space_sequencer/sequencer_buttons.c
+++ b/source/blender/editors/space_sequencer/sequencer_buttons.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_sequencer/sequencer_draw.c b/source/blender/editors/space_sequencer/sequencer_draw.c
index 6dffc0bc2a4d14d738850bf7bd9c1ea0633e3e06..8c12193fb88c0417711409677a571c23fe54d83f 100644
--- a/source/blender/editors/space_sequencer/sequencer_draw.c
+++ b/source/blender/editors/space_sequencer/sequencer_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_sequencer/sequencer_edit.c b/source/blender/editors/space_sequencer/sequencer_edit.c
index b2f13c612ac7d69c6bcb6ef19255c8489d0c21d4..c1abc97fdb7d1162094b0b530a8dd001966cf937 100644
--- a/source/blender/editors/space_sequencer/sequencer_edit.c
+++ b/source/blender/editors/space_sequencer/sequencer_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_sequencer/sequencer_intern.h b/source/blender/editors/space_sequencer/sequencer_intern.h
index 7143a1fa1ca2855eb206182d35bbd06320e6de6e..c66cda806fb3ad6e7811e8844350bc83b260d263 100644
--- a/source/blender/editors/space_sequencer/sequencer_intern.h
+++ b/source/blender/editors/space_sequencer/sequencer_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_sequencer/sequencer_modifier.c b/source/blender/editors/space_sequencer/sequencer_modifier.c
index dd8595622f8ed6493c6c9d552e50dc5bfa3679ae..49fcdd1f4f6ef88d1b1825946b3f558883d45fcc 100644
--- a/source/blender/editors/space_sequencer/sequencer_modifier.c
+++ b/source/blender/editors/space_sequencer/sequencer_modifier.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_sequencer/sequencer_ops.c b/source/blender/editors/space_sequencer/sequencer_ops.c
index 2c5f211b0e459f4aa8aac2acc0ca46e257473954..e39fcfbcb248f3eca9cbc5308cf8160f3d251da2 100644
--- a/source/blender/editors/space_sequencer/sequencer_ops.c
+++ b/source/blender/editors/space_sequencer/sequencer_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_sequencer/sequencer_preview.c b/source/blender/editors/space_sequencer/sequencer_preview.c
index 7d416884721c6cb3601fae08b6aab031cf456ae2..2820edc95aa11bcae8422fcd57f8cda28139f21d 100644
--- a/source/blender/editors/space_sequencer/sequencer_preview.c
+++ b/source/blender/editors/space_sequencer/sequencer_preview.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_sequencer/sequencer_proxy.c b/source/blender/editors/space_sequencer/sequencer_proxy.c
index fb561025da2be6a4d7cab5e45be75e653fa2b69c..c851d3a29d46a549191ace957f70db21d7798a13 100644
--- a/source/blender/editors/space_sequencer/sequencer_proxy.c
+++ b/source/blender/editors/space_sequencer/sequencer_proxy.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_sequencer/sequencer_scopes.c b/source/blender/editors/space_sequencer/sequencer_scopes.c
index fd341fc9c0dc529a43d2117056321087f18c3a49..6ba1dcc5eb8f20c511d4e2af203db04712d37e43 100644
--- a/source/blender/editors/space_sequencer/sequencer_scopes.c
+++ b/source/blender/editors/space_sequencer/sequencer_scopes.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2006-2008 Peter Schlaile < peter [at] schlaile [dot] de >
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006-2008 Peter Schlaile < peter [at] schlaile [dot] de >. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_sequencer/sequencer_select.c b/source/blender/editors/space_sequencer/sequencer_select.c
index 47696ab92569b964016511f4d1496f61bf2d4b8e..aa900ec8ffabfab819ad01ee6d57440729fe820d 100644
--- a/source/blender/editors/space_sequencer/sequencer_select.c
+++ b/source/blender/editors/space_sequencer/sequencer_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_sequencer/sequencer_thumbnails.c b/source/blender/editors/space_sequencer/sequencer_thumbnails.c
index 82ba17d4db174c4192d0b75859f520bc72ec316c..f5c5c7af4b602fd73137bffd2f1101d460a06672 100644
--- a/source/blender/editors/space_sequencer/sequencer_thumbnails.c
+++ b/source/blender/editors/space_sequencer/sequencer_thumbnails.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_sequencer/sequencer_view.c b/source/blender/editors/space_sequencer/sequencer_view.c
index 360aa2253de834c37088c2a48bdb80a6795692e0..4d245b9ddaadce4011436cbdfa2208f5853d472c 100644
--- a/source/blender/editors/space_sequencer/sequencer_view.c
+++ b/source/blender/editors/space_sequencer/sequencer_view.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_sequencer/space_sequencer.c b/source/blender/editors/space_sequencer/space_sequencer.c
index b294fdf482065ae2cab9c28d8e453c0a54ecfb17..d1b25af52f1856f5193e4c4150e6d7404e6925b7 100644
--- a/source/blender/editors/space_sequencer/space_sequencer.c
+++ b/source/blender/editors/space_sequencer/space_sequencer.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spseq
diff --git a/source/blender/editors/space_spreadsheet/CMakeLists.txt b/source/blender/editors/space_spreadsheet/CMakeLists.txt
index f1db8dedf1a005934685bf54de1bf99d662f12e9..80c1b8f3b1bb99c2a1103f0e5d10ce525b2fed01 100644
--- a/source/blender/editors/space_spreadsheet/CMakeLists.txt
+++ b/source/blender/editors/space_spreadsheet/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_spreadsheet/space_spreadsheet.cc b/source/blender/editors/space_spreadsheet/space_spreadsheet.cc
index 357b3e0a8b40be79feeb673dda5fd2b32136ef14..3be890bfcc524ae66d7af002b4d9756b97ba8c13 100644
--- a/source/blender/editors/space_spreadsheet/space_spreadsheet.cc
+++ b/source/blender/editors/space_spreadsheet/space_spreadsheet.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <cstring>
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_cache.cc b/source/blender/editors/space_spreadsheet/spreadsheet_cache.cc
index 2a399e018b6af7bb701fde8ff249f575f781fd7b..931a00ab583ab881f28c97f9bb0713fd1a45f1b9 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_cache.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_cache.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "spreadsheet_cache.hh"
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_cache.hh b/source/blender/editors/space_spreadsheet/spreadsheet_cache.hh
index d370bdab5c1ca63c1f54a9e895c5f525e140f72f..7011daab224235f3e26adc7e5c5b92a2e2897623 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_cache.hh
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_cache.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_column.cc b/source/blender/editors/space_spreadsheet/spreadsheet_column.cc
index ede8756a9daafdf16cd95ed99e4bc221213db545..964738ff2c1e41fc76c6523957c981d368108b40 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_column.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_column.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_space_types.h"
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_column.hh b/source/blender/editors/space_spreadsheet/spreadsheet_column.hh
index 7dad505c21b0106f59279ce8daf642cbfd37b836..691c3b4085772b9ac776338aa5b7dd5b27796792 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_column.hh
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_column.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_column_values.hh b/source/blender/editors/space_spreadsheet/spreadsheet_column_values.hh
index 83e3217e5c8d553a8beeb9deaa733939425cfe62..454518016bcef0724665146c631d0343ea11aaad 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_column_values.hh
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_column_values.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_context.cc b/source/blender/editors/space_spreadsheet/spreadsheet_context.cc
index 5cec016b7273a5624b094cd6794f425a5af9f5bf..1a61f021e92b000408e7476f16598c72cabc0ad1 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_context.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_context.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "MEM_guardedalloc.h"
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_context.hh b/source/blender/editors/space_spreadsheet/spreadsheet_context.hh
index d71769e42b3831ef1a7ac472a7c62d8effdeb5a6..758ae3928943644393095eb7ded30ab5ecea3375 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_context.hh
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_context.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_data_source.cc b/source/blender/editors/space_spreadsheet/spreadsheet_data_source.cc
index 09b8c6b1b54ee814965333f4906b9933f0f236a1..eaf348733b5965aec143685080034d76b477c56c 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_data_source.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_data_source.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "spreadsheet_data_source.hh"
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_data_source.hh b/source/blender/editors/space_spreadsheet/spreadsheet_data_source.hh
index 873735c81e57f78f66a88a0cdb46bdae1d117899..76c7131e268ca91ae1d055ccafb848d4b7500fc0 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_data_source.hh
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_data_source.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.cc b/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.cc
index 83302f94c85e698b6543328e3e82ccd1eab64cbb..3c94c466da1b52c93fec49602d599001ac65744c 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_virtual_array.hh"
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.hh b/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.hh
index b5105050d2b1ebedcccb7bdafa144c78c1ed0484..303f495e3df7f7a8be6d698ac7fb82b6dae6c162 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.hh
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_dataset_draw.cc b/source/blender/editors/space_spreadsheet/spreadsheet_dataset_draw.cc
index 2a81b56d129bae8ba2ac4d3dcadebde4d1b7d183..70dd808260680ea06656779ee8c46f5b73e6bae0 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_dataset_draw.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_dataset_draw.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_space_types.h"
 #include "DNA_windowmanager_types.h"
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_dataset_draw.hh b/source/blender/editors/space_spreadsheet/spreadsheet_dataset_draw.hh
index 4a604533f1191804f5e6b97f8bcd1f5fea41ca3b..b65a5bb6e7c4e50d287cc63c3e02ed298027a878 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_dataset_draw.hh
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_dataset_draw.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_draw.cc b/source/blender/editors/space_spreadsheet/spreadsheet_draw.cc
index 857aa20da92bce51e8c853a8ba89d0d357fb3cf0..c7170cd1da33b09499532138038cbf63960bf59e 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_draw.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_draw.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "UI_interface.h"
 #include "UI_resources.h"
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_draw.hh b/source/blender/editors/space_spreadsheet/spreadsheet_draw.hh
index 9accd1d3d09c90736ec4cf5d2bf60ccd759a4f13..d698028cc5402e12b6649b1bcc55460a1428523f 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_draw.hh
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_draw.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_intern.hh b/source/blender/editors/space_spreadsheet/spreadsheet_intern.hh
index df23a27aa228a4e7b2da83e81acab3d5e805f416..8bb2613c98b99b0fe9bb6ad62b2eab6199f625c1 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_intern.hh
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_intern.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_layout.cc b/source/blender/editors/space_spreadsheet/spreadsheet_layout.cc
index d9837b7c1a611fdb3d15020bddb8a5251711ea8b..ad8778b5cb0d883f4d04346be095b8dfa1b660cb 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_layout.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_layout.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <iomanip>
 #include <sstream>
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_layout.hh b/source/blender/editors/space_spreadsheet/spreadsheet_layout.hh
index f996cd99dad9bc9b98750dc95d2dc0590b3cbcb0..82f80ba88a3f73bf9f0bfc13135c8fd935901856 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_layout.hh
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_layout.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_ops.cc b/source/blender/editors/space_spreadsheet/spreadsheet_ops.cc
index 11ed88b7dc99f184ddfb4ada2697a7e8484b86a6..4d6dc3b4166def692154c7ddb5043024e5874b05 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_ops.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_ops.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #include "BKE_screen.h"
 
 #include "DNA_space_types.h"
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_panels.cc b/source/blender/editors/space_spreadsheet/spreadsheet_panels.cc
index db8265a33ce7e2953c1e0ff930b3c19abc1b7f60..7fc7f10ba5e693a924d1aa5b28a18a225c43bc4c 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_panels.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_panels.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_screen.h"
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_row_filter.cc b/source/blender/editors/space_spreadsheet/spreadsheet_row_filter.cc
index 556c0b0d5ca30921e3d8858f1dddbce73c5ac9e3..1fddd751d78b607b336a0fd4cf3d38f7946a8368 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_row_filter.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_row_filter.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <cstring>
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_row_filter.hh b/source/blender/editors/space_spreadsheet/spreadsheet_row_filter.hh
index 3788baaa9935a3008c508d1d96562e3b7ba9dfc3..3810eaf020081d581c48a1757d38f9292cabdeac 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_row_filter.hh
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_row_filter.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_row_filter_ui.cc b/source/blender/editors/space_spreadsheet/spreadsheet_row_filter_ui.cc
index c409defd3f4edd96ae366ea54601042af69fb005..95eba50f0a2904667bfabd0183746005e6b3bf65 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_row_filter_ui.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_row_filter_ui.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <cstring>
 
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_row_filter_ui.hh b/source/blender/editors/space_spreadsheet/spreadsheet_row_filter_ui.hh
index e22178b63eaa293cbdf1d21b92a509bd61298664..9ec8fe0707d3eb5632eed0e0ff97f29c1dab13cb 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_row_filter_ui.hh
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_row_filter_ui.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/space_statusbar/CMakeLists.txt b/source/blender/editors/space_statusbar/CMakeLists.txt
index a0f3afecaf9d0d6c375c70099f252166c6506a65..92d92d62aa1e678255ed7c253efbc8caebece808 100644
--- a/source/blender/editors/space_statusbar/CMakeLists.txt
+++ b/source/blender/editors/space_statusbar/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_statusbar/space_statusbar.c b/source/blender/editors/space_statusbar/space_statusbar.c
index 91a85e4c4b06b84e5a21f71fcd0e22c287bf0c7e..273c0375fb0c22dbfa388fc69a566a22a453df34 100644
--- a/source/blender/editors/space_statusbar/space_statusbar.c
+++ b/source/blender/editors/space_statusbar/space_statusbar.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spstatusbar
diff --git a/source/blender/editors/space_text/CMakeLists.txt b/source/blender/editors/space_text/CMakeLists.txt
index a85c69caa507d6d76e7f549d06c1d0bfa183f207..6410e971a66c3b6f6d63600650721153a3b2a9b5 100644
--- a/source/blender/editors/space_text/CMakeLists.txt
+++ b/source/blender/editors/space_text/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_text/space_text.c b/source/blender/editors/space_text/space_text.c
index 7339d8248c8d3cf1b52c8e276d137fa7bab43cae..15353d610d1c7a44df6d9f4e3417a41822573063 100644
--- a/source/blender/editors/space_text/space_text.c
+++ b/source/blender/editors/space_text/space_text.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_text/text_autocomplete.c b/source/blender/editors/space_text/text_autocomplete.c
index 32e455f3ac9414b128b05166e21a8c50a135ccad..496f500ef040762d42f46efb8d7bf7f89402e8dc 100644
--- a/source/blender/editors/space_text/text_autocomplete.c
+++ b/source/blender/editors/space_text/text_autocomplete.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_text/text_draw.c b/source/blender/editors/space_text/text_draw.c
index 27941b881b822b24491481c8ab22c3ef8502eaad..8fefd258f7afa8c88f9354cd21edaa6ee499c0bb 100644
--- a/source/blender/editors/space_text/text_draw.c
+++ b/source/blender/editors/space_text/text_draw.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_text/text_format.c b/source/blender/editors/space_text/text_format.c
index cf0a7c089b590d6d049e1b3ef7230cbd05b54620..00186cca51c29b064169d6cd71a5b8021c4d851c 100644
--- a/source/blender/editors/space_text/text_format.c
+++ b/source/blender/editors/space_text/text_format.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_text/text_format.h b/source/blender/editors/space_text/text_format.h
index ebccaa54342b216a77baa58b471e6521e917c669..00a2f9ad37a7ca257f682a65067fd3ba71cf9dc1 100644
--- a/source/blender/editors/space_text/text_format.h
+++ b/source/blender/editors/space_text/text_format.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_text/text_format_lua.c b/source/blender/editors/space_text/text_format_lua.c
index cdc43246a2fd15aef51a12f42d0513ea2b9bdfa3..f7d7f9c62381c4c647df5d56bd9342a3cf7b3c2f 100644
--- a/source/blender/editors/space_text/text_format_lua.c
+++ b/source/blender/editors/space_text/text_format_lua.c
@@ -1,17 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_text/text_format_osl.c b/source/blender/editors/space_text/text_format_osl.c
index 6fc65a19d98d2943c3d34a989b1b9aaabc2e4b01..27dc1174c49e865abe973c178baca8fc861c0008 100644
--- a/source/blender/editors/space_text/text_format_osl.c
+++ b/source/blender/editors/space_text/text_format_osl.c
@@ -1,17 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_text/text_format_pov.c b/source/blender/editors/space_text/text_format_pov.c
index 0f103351eee6976aada24e289c5eebbc3cd0c3b3..7c2f098f0fabc7330e56361654f2c9bf68776126 100644
--- a/source/blender/editors/space_text/text_format_pov.c
+++ b/source/blender/editors/space_text/text_format_pov.c
@@ -1,17 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_text/text_format_pov_ini.c b/source/blender/editors/space_text/text_format_pov_ini.c
index 2ce8bc37868b95d7488850dceb4b8b62146d80ed..6844f08cca6e163792fc793a523bd70a3896ef55 100644
--- a/source/blender/editors/space_text/text_format_pov_ini.c
+++ b/source/blender/editors/space_text/text_format_pov_ini.c
@@ -1,17 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_text/text_format_py.c b/source/blender/editors/space_text/text_format_py.c
index a8a3bfa3a688a1bc61f23fb8a7c7b249de616afd..4048e181fde902c738b13071484b47a057eb473c 100644
--- a/source/blender/editors/space_text/text_format_py.c
+++ b/source/blender/editors/space_text/text_format_py.c
@@ -1,17 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_text/text_header.c b/source/blender/editors/space_text/text_header.c
index 84b7a6f6831cd4853eb6e133e692271cca1c90cb..4bdf2f4cf3f635d8db616d658e6bb5aa11f0f45e 100644
--- a/source/blender/editors/space_text/text_header.c
+++ b/source/blender/editors/space_text/text_header.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_text/text_intern.h b/source/blender/editors/space_text/text_intern.h
index 0b81cd74a428f3994ea27a9bf8d3e17d02a51547..e9ea6f623ce52c0a7f0e6e073215a34aaec9f9fd 100644
--- a/source/blender/editors/space_text/text_intern.h
+++ b/source/blender/editors/space_text/text_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_text/text_ops.c b/source/blender/editors/space_text/text_ops.c
index 430ffe6d56f46c47f35073f21f79dad0686ba39d..ddba6803f6146dbaabec36255038ed982a62636b 100644
--- a/source/blender/editors/space_text/text_ops.c
+++ b/source/blender/editors/space_text/text_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_text/text_undo.c b/source/blender/editors/space_text/text_undo.c
index 3e40593d40e4af348c2c32998cabc3eb49c8cfd9..864193bfad8ee0bb6a8c58a0dae8de02f5374eb1 100644
--- a/source/blender/editors/space_text/text_undo.c
+++ b/source/blender/editors/space_text/text_undo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup sptext
diff --git a/source/blender/editors/space_topbar/CMakeLists.txt b/source/blender/editors/space_topbar/CMakeLists.txt
index 15e71e2296d8884395f276003fde1aad485b72b4..ad0989dbc5b1a63ac8648b11095a90fe393b54b3 100644
--- a/source/blender/editors/space_topbar/CMakeLists.txt
+++ b/source/blender/editors/space_topbar/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_topbar/space_topbar.c b/source/blender/editors/space_topbar/space_topbar.c
index 82a0de9b845edf1990f97f270e0647ab60819a94..e9a9e690e607047a50f3b36adf5d1924500b9317 100644
--- a/source/blender/editors/space_topbar/space_topbar.c
+++ b/source/blender/editors/space_topbar/space_topbar.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sptopbar
diff --git a/source/blender/editors/space_userpref/CMakeLists.txt b/source/blender/editors/space_userpref/CMakeLists.txt
index 61fe2bff63fb12d65d41671aac64e92306cb8d35..37408dd85af52f2e26b61dae8141527a2220d781 100644
--- a/source/blender/editors/space_userpref/CMakeLists.txt
+++ b/source/blender/editors/space_userpref/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_userpref/space_userpref.c b/source/blender/editors/space_userpref/space_userpref.c
index b1ee6da1a33354ed7bc48de89cf7235b13033a7c..1cda9cc0f0c2978b3109f9a7a106db816106a5ac 100644
--- a/source/blender/editors/space_userpref/space_userpref.c
+++ b/source/blender/editors/space_userpref/space_userpref.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spuserpref
diff --git a/source/blender/editors/space_userpref/userpref_intern.h b/source/blender/editors/space_userpref/userpref_intern.h
index 506e93ae7ace70225171ee53ab5ff94ad1a107ac..d96117d68fdd4d6523417b5490339c0fc88b11e5 100644
--- a/source/blender/editors/space_userpref/userpref_intern.h
+++ b/source/blender/editors/space_userpref/userpref_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spuserpref
diff --git a/source/blender/editors/space_userpref/userpref_ops.c b/source/blender/editors/space_userpref/userpref_ops.c
index e4c11bc8668c332e36f8526fd14e3ce723a38ab9..a7a741b3ce2adf2b5c2571ac458e42edb36d8ba8 100644
--- a/source/blender/editors/space_userpref/userpref_ops.c
+++ b/source/blender/editors/space_userpref/userpref_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spuserpref
diff --git a/source/blender/editors/space_view3d/CMakeLists.txt b/source/blender/editors/space_view3d/CMakeLists.txt
index 7e8b013192f152a9aed53652094016b290c50427..d455c500df71f1c77f743f9900d19f4d2f8da0fe 100644
--- a/source/blender/editors/space_view3d/CMakeLists.txt
+++ b/source/blender/editors/space_view3d/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/space_view3d/drawobject.c b/source/blender/editors/space_view3d/drawobject.c
index 48f39f835c54caf4952fe3184760ecb6865c4b98..7776119a5942561b7fb2c44253f6623400053e9c 100644
--- a/source/blender/editors/space_view3d/drawobject.c
+++ b/source/blender/editors/space_view3d/drawobject.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/space_view3d.c b/source/blender/editors/space_view3d/space_view3d.c
index 51107499d3fab55ad7e8548a674aafbe326bc33b..7addda0f8c34c80508314ffd2537e1b8effc2048 100644
--- a/source/blender/editors/space_view3d/space_view3d.c
+++ b/source/blender/editors/space_view3d/space_view3d.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_buttons.c b/source/blender/editors/space_view3d/view3d_buttons.c
index 6edb0a070c022e768e9fbe72ee5e9c5f535e4f3c..b77994e28cb1a41317d91ad2081d34461279e34f 100644
--- a/source/blender/editors/space_view3d/view3d_buttons.c
+++ b/source/blender/editors/space_view3d/view3d_buttons.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_camera_control.c b/source/blender/editors/space_view3d/view3d_camera_control.c
index 535a65c8f0c59edcf5667ad3d6ebef93ad2011d4..b5962647278e6d7da14796651bb267018caa5e4e 100644
--- a/source/blender/editors/space_view3d/view3d_camera_control.c
+++ b/source/blender/editors/space_view3d/view3d_camera_control.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_cursor_snap.c b/source/blender/editors/space_view3d/view3d_cursor_snap.c
index f5abba2c6745b5d309757ace9d188325275718f1..785c5ab28c8f47b861ecb634269d613e3bc1133c 100644
--- a/source/blender/editors/space_view3d/view3d_cursor_snap.c
+++ b/source/blender/editors/space_view3d/view3d_cursor_snap.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/editors/space_view3d/view3d_draw.c b/source/blender/editors/space_view3d/view3d_draw.c
index 3f639e8ee1a173891f53b0ddb5bb6af8220f96b8..c4078c4a69039e0a19bb06e23e3976061e8a8443 100644
--- a/source/blender/editors/space_view3d/view3d_draw.c
+++ b/source/blender/editors/space_view3d/view3d_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_edit.c b/source/blender/editors/space_view3d/view3d_edit.c
index 4c7a7cb4c6145e11d70123da79c79c25878b60f8..d6bc7ded92e38b21fe24b321b653d363891de669 100644
--- a/source/blender/editors/space_view3d/view3d_edit.c
+++ b/source/blender/editors/space_view3d/view3d_edit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_gizmo_armature.c b/source/blender/editors/space_view3d/view3d_gizmo_armature.c
index 31ae8a92f81d3d018301ef1915b86af24fc48f86..3f6167d92ca78f65d3cd7c68ba43fc00419b1bce 100644
--- a/source/blender/editors/space_view3d/view3d_gizmo_armature.c
+++ b/source/blender/editors/space_view3d/view3d_gizmo_armature.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_gizmo_camera.c b/source/blender/editors/space_view3d/view3d_gizmo_camera.c
index 30b9839935fa115db25892f09b5df04083f74c30..7fd17921d7951cf0651a11f7e41d4d1e5f9f78d9 100644
--- a/source/blender/editors/space_view3d/view3d_gizmo_camera.c
+++ b/source/blender/editors/space_view3d/view3d_gizmo_camera.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_gizmo_empty.c b/source/blender/editors/space_view3d/view3d_gizmo_empty.c
index 7f677d88921dcc034c96f8f20cac7e57e47afdd9..f113cc60224432c80a2557f0a6536b3b7018f9e9 100644
--- a/source/blender/editors/space_view3d/view3d_gizmo_empty.c
+++ b/source/blender/editors/space_view3d/view3d_gizmo_empty.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_gizmo_forcefield.c b/source/blender/editors/space_view3d/view3d_gizmo_forcefield.c
index 98597cb2986441e71d20bd0a4186153ec2f1dff3..9288fe68ca188e8bd8f201d81427edf67e5c7351 100644
--- a/source/blender/editors/space_view3d/view3d_gizmo_forcefield.c
+++ b/source/blender/editors/space_view3d/view3d_gizmo_forcefield.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_gizmo_light.c b/source/blender/editors/space_view3d/view3d_gizmo_light.c
index d92ebfd57a861ea2e563815f717a68c082eea6c3..d4e438bb79dfa33bafb659caf94d0d2af8d1efd0 100644
--- a/source/blender/editors/space_view3d/view3d_gizmo_light.c
+++ b/source/blender/editors/space_view3d/view3d_gizmo_light.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_gizmo_navigate.c b/source/blender/editors/space_view3d/view3d_gizmo_navigate.c
index cd0576f2d218d1990fc9eb472817c4d11a026b74..41af24977dbd85a9d2f838063b1aa579ae912d71 100644
--- a/source/blender/editors/space_view3d/view3d_gizmo_navigate.c
+++ b/source/blender/editors/space_view3d/view3d_gizmo_navigate.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_gizmo_navigate_type.c b/source/blender/editors/space_view3d/view3d_gizmo_navigate_type.c
index baa54adaa8379fcd3b6e6809ab9786077ce6d02d..73ac3f3a1d8ca94f4ed553abf0b5163c419149b3 100644
--- a/source/blender/editors/space_view3d/view3d_gizmo_navigate_type.c
+++ b/source/blender/editors/space_view3d/view3d_gizmo_navigate_type.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/editors/space_view3d/view3d_gizmo_preselect.c b/source/blender/editors/space_view3d/view3d_gizmo_preselect.c
index 918ecb147522554facc6ecdb01df45ae667dc938..74153a1c740620ed9078b6251ed30fffe24b7f4e 100644
--- a/source/blender/editors/space_view3d/view3d_gizmo_preselect.c
+++ b/source/blender/editors/space_view3d/view3d_gizmo_preselect.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_gizmo_preselect_type.c b/source/blender/editors/space_view3d/view3d_gizmo_preselect_type.c
index 513fdbecc74a627d18099fc21a599bf7bd2b8bc2..6cc197c8a4342ac59ced2da50b48a22debf86d17 100644
--- a/source/blender/editors/space_view3d/view3d_gizmo_preselect_type.c
+++ b/source/blender/editors/space_view3d/view3d_gizmo_preselect_type.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/editors/space_view3d/view3d_gizmo_ruler.c b/source/blender/editors/space_view3d/view3d_gizmo_ruler.c
index 1082483dcd7ff60dcbd7bf137da76519dbf4540a..9b954cd817bc84d3f5294ec1dbe407478ed11c55 100644
--- a/source/blender/editors/space_view3d/view3d_gizmo_ruler.c
+++ b/source/blender/editors/space_view3d/view3d_gizmo_ruler.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_gizmo_tool_generic.c b/source/blender/editors/space_view3d/view3d_gizmo_tool_generic.c
index 1de08e75f807ce864f2a8827342f5a4dde677391..721f7e958adf695ac5fffff01ff8b4abeceb00f7 100644
--- a/source/blender/editors/space_view3d/view3d_gizmo_tool_generic.c
+++ b/source/blender/editors/space_view3d/view3d_gizmo_tool_generic.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_header.c b/source/blender/editors/space_view3d/view3d_header.c
index 7f872c9b1af8efc4e1d7924fdf662e3828cf4e9b..9f0eb18e284bceee2bac1d1a58ecd7e81299ae6f 100644
--- a/source/blender/editors/space_view3d/view3d_header.c
+++ b/source/blender/editors/space_view3d/view3d_header.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004-2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004-2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_intern.h b/source/blender/editors/space_view3d/view3d_intern.h
index b443ebeed94d7c75fe8b79168294aaa3edca5f66..0c5ff5a63cba2acf3ad4697383d482d9e0c50e6d 100644
--- a/source/blender/editors/space_view3d/view3d_intern.h
+++ b/source/blender/editors/space_view3d/view3d_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_iterators.c b/source/blender/editors/space_view3d/view3d_iterators.c
index 990b4fc85b1eb2a531c8f61c071ace80ea92eead..e1fd96ca1d4fd287e163ce74d58a19f0d1620b4d 100644
--- a/source/blender/editors/space_view3d/view3d_iterators.c
+++ b/source/blender/editors/space_view3d/view3d_iterators.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_navigate.c b/source/blender/editors/space_view3d/view3d_navigate.c
index 98eef94d5fbd2c61c7872f890c6e2e6222ecaf79..0305989d1427a635f8e5a057c49dd023e91e5709 100644
--- a/source/blender/editors/space_view3d/view3d_navigate.c
+++ b/source/blender/editors/space_view3d/view3d_navigate.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_navigate.h b/source/blender/editors/space_view3d/view3d_navigate.h
index 792d2a83bc2411a6cf704d313211926f21148dfb..5fbfb3e9bd84036be6eb88fa0371660d77fabf2f 100644
--- a/source/blender/editors/space_view3d/view3d_navigate.h
+++ b/source/blender/editors/space_view3d/view3d_navigate.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_navigate_dolly.c b/source/blender/editors/space_view3d/view3d_navigate_dolly.c
index 02783c2a244bc68ca6d4b3bfad997677fff93eaa..06b616e71da00d0be0ebc3c18c8e89e8c5eda287 100644
--- a/source/blender/editors/space_view3d/view3d_navigate_dolly.c
+++ b/source/blender/editors/space_view3d/view3d_navigate_dolly.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_navigate_fly.c b/source/blender/editors/space_view3d/view3d_navigate_fly.c
index 940616eec1f32ca75bbd8a0280c51acddc7c5c6d..af78663fff9c1ddd0d6a31de52bfac7fc51d4a59 100644
--- a/source/blender/editors/space_view3d/view3d_navigate_fly.c
+++ b/source/blender/editors/space_view3d/view3d_navigate_fly.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_navigate_move.c b/source/blender/editors/space_view3d/view3d_navigate_move.c
index 90acf20d24f4b216b67bdc6d2f7959feb0c817c9..d2fd505a70359d96fcc07b940cc5a546b8da8470 100644
--- a/source/blender/editors/space_view3d/view3d_navigate_move.c
+++ b/source/blender/editors/space_view3d/view3d_navigate_move.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_navigate_ndof.c b/source/blender/editors/space_view3d/view3d_navigate_ndof.c
index 285d5c02db223e2da66d2809773a7dac04d49eec..ced8eca710bffe40fcb93e13a497a204e5a4b876 100644
--- a/source/blender/editors/space_view3d/view3d_navigate_ndof.c
+++ b/source/blender/editors/space_view3d/view3d_navigate_ndof.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_navigate_roll.c b/source/blender/editors/space_view3d/view3d_navigate_roll.c
index c9bfdc4412a91b2e90dc7a226801255d55aebf57..56bd9c932169028544a3b416f31b9fbb6b734634 100644
--- a/source/blender/editors/space_view3d/view3d_navigate_roll.c
+++ b/source/blender/editors/space_view3d/view3d_navigate_roll.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_navigate_rotate.c b/source/blender/editors/space_view3d/view3d_navigate_rotate.c
index c3730b3b3b12a654ee1fdb49ea87f3f788dbc918..774a8983c6741b111ddea46f2604a8e9b45b965d 100644
--- a/source/blender/editors/space_view3d/view3d_navigate_rotate.c
+++ b/source/blender/editors/space_view3d/view3d_navigate_rotate.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_navigate_smoothview.c b/source/blender/editors/space_view3d/view3d_navigate_smoothview.c
index aeffb520b0a067ca103642e8ecc29eb3f3b22d54..48af126d8a97882144ceb8c6501bf73904730bbf 100644
--- a/source/blender/editors/space_view3d/view3d_navigate_smoothview.c
+++ b/source/blender/editors/space_view3d/view3d_navigate_smoothview.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_navigate_walk.c b/source/blender/editors/space_view3d/view3d_navigate_walk.c
index d72fa3cb90fbbdcbc922ddd7e7a0bee3a57a2ea9..333c99c2fca7c065cf90e60290887cda6f1fec8e 100644
--- a/source/blender/editors/space_view3d/view3d_navigate_walk.c
+++ b/source/blender/editors/space_view3d/view3d_navigate_walk.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_navigate_zoom.c b/source/blender/editors/space_view3d/view3d_navigate_zoom.c
index a6c7d06c0795c8f61880957b0af26878476c55a0..8eb8fffaa31b50fa2210dc43cb9dd25fce99ed0d 100644
--- a/source/blender/editors/space_view3d/view3d_navigate_zoom.c
+++ b/source/blender/editors/space_view3d/view3d_navigate_zoom.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_navigate_zoom_border.c b/source/blender/editors/space_view3d/view3d_navigate_zoom_border.c
index 38c3e37bac6d5dae502fff8bf556b96916ce3a06..4e909151ce4a8336b70470443bc3efe7c20378e6 100644
--- a/source/blender/editors/space_view3d/view3d_navigate_zoom_border.c
+++ b/source/blender/editors/space_view3d/view3d_navigate_zoom_border.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_ops.c b/source/blender/editors/space_view3d/view3d_ops.c
index 52db8526937b1dd0b201e0269397cf090feadc16..6fbd553e17bdd3e4359e2dc4035ebb642d58ca17 100644
--- a/source/blender/editors/space_view3d/view3d_ops.c
+++ b/source/blender/editors/space_view3d/view3d_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_placement.c b/source/blender/editors/space_view3d/view3d_placement.c
index 8c1cab6bf144af1f348d91b4c8d8def86235cd63..06b848571d8f115b437b0d339df5d8a597270569 100644
--- a/source/blender/editors/space_view3d/view3d_placement.c
+++ b/source/blender/editors/space_view3d/view3d_placement.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_project.c b/source/blender/editors/space_view3d/view3d_project.c
index 8c2e0df027553d5ce9dfe73b53cf15409d7972b4..2cf9ac0a52e72521a7fca53f2c6021d54104068b 100644
--- a/source/blender/editors/space_view3d/view3d_project.c
+++ b/source/blender/editors/space_view3d/view3d_project.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_select.c b/source/blender/editors/space_view3d/view3d_select.c
index 34aa24a1eefd5b9f5c4861c442b277e86db493a5..f08c53fff47253dffef68950725436d7f52725f3 100644
--- a/source/blender/editors/space_view3d/view3d_select.c
+++ b/source/blender/editors/space_view3d/view3d_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_snap.c b/source/blender/editors/space_view3d/view3d_snap.c
index 4334ede0a06f3172a9d047a9d372d05d053ea1b9..bcdc962a8608883d76c672dc22dfe5cd40653d86 100644
--- a/source/blender/editors/space_view3d/view3d_snap.c
+++ b/source/blender/editors/space_view3d/view3d_snap.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_utils.c b/source/blender/editors/space_view3d/view3d_utils.c
index 8b75ce63cde35ab708289b14d04fd0bdd1335b79..8a219cd96d1c48cbc1503756d5b0bdfbaa42beb6 100644
--- a/source/blender/editors/space_view3d/view3d_utils.c
+++ b/source/blender/editors/space_view3d/view3d_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/space_view3d/view3d_view.c b/source/blender/editors/space_view3d/view3d_view.c
index ddd5cc640bbde2f4b8d938d4da448a58220f0ab5..e7fcc401523286a65178a194ba1065cade39aebe 100644
--- a/source/blender/editors/space_view3d/view3d_view.c
+++ b/source/blender/editors/space_view3d/view3d_view.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup spview3d
diff --git a/source/blender/editors/transform/CMakeLists.txt b/source/blender/editors/transform/CMakeLists.txt
index 09c53d7196c27aa41e125df2b96d6b19fbf289bf..a7430cf88a579c387ad76a2f8d49ec129f0525b0 100644
--- a/source/blender/editors/transform/CMakeLists.txt
+++ b/source/blender/editors/transform/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/transform/transform.c b/source/blender/editors/transform/transform.c
index 386fd85213e3e1984e7c4c31fa46d1be99f014b7..3bcc1b2968eca64af204a8578214151232c3cb0c 100644
--- a/source/blender/editors/transform/transform.c
+++ b/source/blender/editors/transform/transform.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform.h b/source/blender/editors/transform/transform.h
index 8d91f90ea29f87c3b16eeec857d49c3817686375..757c11f11793c7440b0abb483e93a8d779e14855 100644
--- a/source/blender/editors/transform/transform.h
+++ b/source/blender/editors/transform/transform.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_constraints.c b/source/blender/editors/transform/transform_constraints.c
index ede4c3e458c11c5d77cac67c8070d8743e6736aa..64ef170a13fbcef09b410d101271816e98ffabaa 100644
--- a/source/blender/editors/transform/transform_constraints.c
+++ b/source/blender/editors/transform/transform_constraints.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_constraints.h b/source/blender/editors/transform/transform_constraints.h
index 12151f9df0779d92e10faeab0c65ae5e899d63ab..9182330b729782f9fdbb6572f989cde9530bce8f 100644
--- a/source/blender/editors/transform/transform_constraints.h
+++ b/source/blender/editors/transform/transform_constraints.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert.c b/source/blender/editors/transform/transform_convert.c
index 4107cc3a71cd1eece72fbe99ab9cbb969b2aa852..95b810daeafeafeaf4f8113c4298a611a9ccc3b5 100644
--- a/source/blender/editors/transform/transform_convert.c
+++ b/source/blender/editors/transform/transform_convert.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert.h b/source/blender/editors/transform/transform_convert.h
index 90f78d4abf109f49dc979f4d945d811ec946f058..1aac8f36442281206df841dde5c0023c1135cfbb 100644
--- a/source/blender/editors/transform/transform_convert.h
+++ b/source/blender/editors/transform/transform_convert.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_action.c b/source/blender/editors/transform/transform_convert_action.c
index 69b4de48c56ce36c571d4a7c9a5a0f8513e2aa72..ac1e961e3611584909c4512012589958ad990fbe 100644
--- a/source/blender/editors/transform/transform_convert_action.c
+++ b/source/blender/editors/transform/transform_convert_action.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_armature.c b/source/blender/editors/transform/transform_convert_armature.c
index 04a8d462924c3ac1bb98c5becb0fd1bbe2410af5..ad4c0fd631d0f3f5c8edd1e82c8a975b83c0bdb8 100644
--- a/source/blender/editors/transform/transform_convert_armature.c
+++ b/source/blender/editors/transform/transform_convert_armature.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_cursor.c b/source/blender/editors/transform/transform_convert_cursor.c
index 4846e8d2d1a8de15368156df2cad00f213232e67..5e6eee192f21a1c895e78cf657676c5807eb30fe 100644
--- a/source/blender/editors/transform/transform_convert_cursor.c
+++ b/source/blender/editors/transform/transform_convert_cursor.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_curve.c b/source/blender/editors/transform/transform_convert_curve.c
index 924e51a2b41fe3f566ed48b633afeee57b0aef73..51acfb2a78858ce29399676b7a72231089b0b369 100644
--- a/source/blender/editors/transform/transform_convert_curve.c
+++ b/source/blender/editors/transform/transform_convert_curve.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_gpencil.c b/source/blender/editors/transform/transform_convert_gpencil.c
index e52dcb178064d4c295ffee56cbb087f7ec80685f..a88d42b7f3061ab796afade7ba8bf3f02ab8b832 100644
--- a/source/blender/editors/transform/transform_convert_gpencil.c
+++ b/source/blender/editors/transform/transform_convert_gpencil.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_graph.c b/source/blender/editors/transform/transform_convert_graph.c
index 40c226b8f7c7f3406be6c6f21f52350295cc20a0..608fd59c8b74ea409c708387a9e5228b265a19f2 100644
--- a/source/blender/editors/transform/transform_convert_graph.c
+++ b/source/blender/editors/transform/transform_convert_graph.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_lattice.c b/source/blender/editors/transform/transform_convert_lattice.c
index fbfce41d555dbace31fa9ca9ed3903c4d440d82b..f02d4e94448924b8d000cb6c0dfa636a6da2de8f 100644
--- a/source/blender/editors/transform/transform_convert_lattice.c
+++ b/source/blender/editors/transform/transform_convert_lattice.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_mask.c b/source/blender/editors/transform/transform_convert_mask.c
index e26172cd764d2028782fb57fda86fbd424534ab2..5255cc4412e96a04c231865bbe282b56859157b2 100644
--- a/source/blender/editors/transform/transform_convert_mask.c
+++ b/source/blender/editors/transform/transform_convert_mask.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_mball.c b/source/blender/editors/transform/transform_convert_mball.c
index f38f3ccf421ae4aa7fd3f52b69399349f0c76029..7cba4f978866d8b45893a32a143480d901b9236e 100644
--- a/source/blender/editors/transform/transform_convert_mball.c
+++ b/source/blender/editors/transform/transform_convert_mball.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_mesh.c b/source/blender/editors/transform/transform_convert_mesh.c
index e00522f0f883fff2c555b2874c8b6cbe98ab6098..b8530293d3e375daec3c886b5752e5747362a63c 100644
--- a/source/blender/editors/transform/transform_convert_mesh.c
+++ b/source/blender/editors/transform/transform_convert_mesh.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_mesh_edge.c b/source/blender/editors/transform/transform_convert_mesh_edge.c
index 2243f66cc7f22e28d4c92f81dea71b17377b3516..2d6c6a933d6f5ba54c72be1cefb32a000dc11177 100644
--- a/source/blender/editors/transform/transform_convert_mesh_edge.c
+++ b/source/blender/editors/transform/transform_convert_mesh_edge.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_mesh_skin.c b/source/blender/editors/transform/transform_convert_mesh_skin.c
index 7c742f29c86e6b8165bf9407554d080d9fc6d55f..fdc2ba590350b58c4733436f14f1f680da85beb3 100644
--- a/source/blender/editors/transform/transform_convert_mesh_skin.c
+++ b/source/blender/editors/transform/transform_convert_mesh_skin.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_mesh_uv.c b/source/blender/editors/transform/transform_convert_mesh_uv.c
index 69f29389b3185effc71c4ab147f4dc23b07bd63e..18868643b6d29a5ec13cf62faae4ba7ab720e8ac 100644
--- a/source/blender/editors/transform/transform_convert_mesh_uv.c
+++ b/source/blender/editors/transform/transform_convert_mesh_uv.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_nla.c b/source/blender/editors/transform/transform_convert_nla.c
index d19698a4f61ef0e9779016a7e4dfee4500c4c957..44a977fe9d007fbaace086f3d6c284f8afa93e05 100644
--- a/source/blender/editors/transform/transform_convert_nla.c
+++ b/source/blender/editors/transform/transform_convert_nla.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_node.c b/source/blender/editors/transform/transform_convert_node.c
index e8cdfaf1f40692217ab7d572eacd027107b4e8b4..7a4b03b640cccf74c97a80ea4ab715bdfbb5bab5 100644
--- a/source/blender/editors/transform/transform_convert_node.c
+++ b/source/blender/editors/transform/transform_convert_node.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_object.c b/source/blender/editors/transform/transform_convert_object.c
index 52365e4e5195d26e3638b13e834deab64a175d8f..1d187d01588e77ae9a18b654a744f0bb116e3490 100644
--- a/source/blender/editors/transform/transform_convert_object.c
+++ b/source/blender/editors/transform/transform_convert_object.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_object_texspace.c b/source/blender/editors/transform/transform_convert_object_texspace.c
index 3e434da66ecdeac8ea68e9ae2fb80e6ecac344ea..e12d0db8758efe28e4d83012f4c9a907cdce034e 100644
--- a/source/blender/editors/transform/transform_convert_object_texspace.c
+++ b/source/blender/editors/transform/transform_convert_object_texspace.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_paintcurve.c b/source/blender/editors/transform/transform_convert_paintcurve.c
index 560298bd99b568f0e75d9386afc345679a2d45ef..b25660164964bfc8daa82e066bd1f7c851268456 100644
--- a/source/blender/editors/transform/transform_convert_paintcurve.c
+++ b/source/blender/editors/transform/transform_convert_paintcurve.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_particle.c b/source/blender/editors/transform/transform_convert_particle.c
index 681d6aea774567733f9b9b2b362504bf6820ef2c..d7b0f378c8a01283705152bf4763da3b9254cc75 100644
--- a/source/blender/editors/transform/transform_convert_particle.c
+++ b/source/blender/editors/transform/transform_convert_particle.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_sculpt.c b/source/blender/editors/transform/transform_convert_sculpt.c
index d9c29ddbcf7a48500decbe805983090cd0ced26d..0c6214668ba18c2767ef67ccce57247df352c02b 100644
--- a/source/blender/editors/transform/transform_convert_sculpt.c
+++ b/source/blender/editors/transform/transform_convert_sculpt.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_sequencer.c b/source/blender/editors/transform/transform_convert_sequencer.c
index 01eae36e846fb7134beb0f480eb45d887d43fc68..513d45ef4bf358cdaadcbe795cb6853e2d7528b1 100644
--- a/source/blender/editors/transform/transform_convert_sequencer.c
+++ b/source/blender/editors/transform/transform_convert_sequencer.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_sequencer_image.c b/source/blender/editors/transform/transform_convert_sequencer_image.c
index 3a5770c2863888caac9f0b174f3f064978d495cd..88a1ad60bed5ee56d0511ae513e019d433faba12 100644
--- a/source/blender/editors/transform/transform_convert_sequencer_image.c
+++ b/source/blender/editors/transform/transform_convert_sequencer_image.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_convert_tracking.c b/source/blender/editors/transform/transform_convert_tracking.c
index f2d0fb7ac2ff36efc0ab04801a3a87160b34db70..45f17512c0912b3ef257813613fa9faa4e1d40a9 100644
--- a/source/blender/editors/transform/transform_convert_tracking.c
+++ b/source/blender/editors/transform/transform_convert_tracking.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_data.h b/source/blender/editors/transform/transform_data.h
index a78c2491a1a90bbccae50ab355d5b51c9dfd17d4..195fab93f7209abea74b7a8238d553fd99e3971e 100644
--- a/source/blender/editors/transform/transform_data.h
+++ b/source/blender/editors/transform/transform_data.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_draw_cursors.c b/source/blender/editors/transform/transform_draw_cursors.c
index 13127ae06bbe7ffda503660af51c067d0e94d13d..42942493dc36f9da0c45c3ed4bf9e30531e3aba6 100644
--- a/source/blender/editors/transform/transform_draw_cursors.c
+++ b/source/blender/editors/transform/transform_draw_cursors.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_draw_cursors.h b/source/blender/editors/transform/transform_draw_cursors.h
index b520cd1d4f865f2f3900816fcb4d14cbf3a27925..8ad1d78f47e05322d6e329663eb042162262d659 100644
--- a/source/blender/editors/transform/transform_draw_cursors.h
+++ b/source/blender/editors/transform/transform_draw_cursors.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_generics.c b/source/blender/editors/transform/transform_generics.c
index d1cbab9ff8ad01b56b117c8fe485ca442477f947..1d86a8f9413c92d64b9798db2134b887a3a94155 100644
--- a/source/blender/editors/transform/transform_generics.c
+++ b/source/blender/editors/transform/transform_generics.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_gizmo_2d.c b/source/blender/editors/transform/transform_gizmo_2d.c
index c3a0e4b11633f0b4d751d98e10315551c539b22c..d2b2d2f116ef1a34e6be62a3b15e1ef243fb1431 100644
--- a/source/blender/editors/transform/transform_gizmo_2d.c
+++ b/source/blender/editors/transform/transform_gizmo_2d.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_gizmo_3d.c b/source/blender/editors/transform/transform_gizmo_3d.c
index c0572478481cd936fd577ff913ab33dc47c1c22f..7e121a717aaa1172c0d3bded63ce24bf1785e309 100644
--- a/source/blender/editors/transform/transform_gizmo_3d.c
+++ b/source/blender/editors/transform/transform_gizmo_3d.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_gizmo_extrude_3d.c b/source/blender/editors/transform/transform_gizmo_extrude_3d.c
index dee6e7281efb2363a8f0a7cdba2e986a23ad301e..6873ea862cef2fa98dbf933690bccb6ee2bfd869 100644
--- a/source/blender/editors/transform/transform_gizmo_extrude_3d.c
+++ b/source/blender/editors/transform/transform_gizmo_extrude_3d.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edmesh
diff --git a/source/blender/editors/transform/transform_input.c b/source/blender/editors/transform/transform_input.c
index 0b46d0b9a132dfab4e72b9d2f309a00cf7f65f29..3b320ff51d53c56fb881c654f0ece3a306b8638c 100644
--- a/source/blender/editors/transform/transform_input.c
+++ b/source/blender/editors/transform/transform_input.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode.c b/source/blender/editors/transform/transform_mode.c
index e1fea62ae5421acf70be0e1ecfed66c79eff7e57..b6c4002b1c7587a631d5fdd76db15216bc65512b 100644
--- a/source/blender/editors/transform/transform_mode.c
+++ b/source/blender/editors/transform/transform_mode.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode.h b/source/blender/editors/transform/transform_mode.h
index 16b26724c67a0b1977653a89b25484a4a79af267..8fde43ffd3845a60dc77388fa382d7c75b9f896e 100644
--- a/source/blender/editors/transform/transform_mode.h
+++ b/source/blender/editors/transform/transform_mode.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_align.c b/source/blender/editors/transform/transform_mode_align.c
index f27a194dda009ee7a1830b3d51f16d0e5b56b41e..d8287a34e0a20b28fa9cb2c3d62e9c02cd6ff01e 100644
--- a/source/blender/editors/transform/transform_mode_align.c
+++ b/source/blender/editors/transform/transform_mode_align.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_baketime.c b/source/blender/editors/transform/transform_mode_baketime.c
index 46d6e5c598336241031fef52637c784039fc2949..293df9a71356dcab921cbd6b356fc15671c98b3b 100644
--- a/source/blender/editors/transform/transform_mode_baketime.c
+++ b/source/blender/editors/transform/transform_mode_baketime.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_bbone_resize.c b/source/blender/editors/transform/transform_mode_bbone_resize.c
index ce2f3c156519b1a93a44193702db21a48610e87c..a9dd81761bddb97862df4ad582a2b3e0c5e19457 100644
--- a/source/blender/editors/transform/transform_mode_bbone_resize.c
+++ b/source/blender/editors/transform/transform_mode_bbone_resize.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_bend.c b/source/blender/editors/transform/transform_mode_bend.c
index a1bcd3aeb5023eaadc0eca2137036e0b67684e1c..348f012e300ecb0b68cf357b5893fd1cee05e1a8 100644
--- a/source/blender/editors/transform/transform_mode_bend.c
+++ b/source/blender/editors/transform/transform_mode_bend.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_boneenvelope.c b/source/blender/editors/transform/transform_mode_boneenvelope.c
index bb7bd81f7bd18ef3dabbbae21b909d96ba6da376..80467dc35cb24123e8fb5184a1ce0f3fce166774 100644
--- a/source/blender/editors/transform/transform_mode_boneenvelope.c
+++ b/source/blender/editors/transform/transform_mode_boneenvelope.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_boneroll.c b/source/blender/editors/transform/transform_mode_boneroll.c
index 00629b13eded14a583d59d271fc60a6a3dbf511d..96d967e2247cc454795b61fd4b9b59f61dfdcc1f 100644
--- a/source/blender/editors/transform/transform_mode_boneroll.c
+++ b/source/blender/editors/transform/transform_mode_boneroll.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_curveshrinkfatten.c b/source/blender/editors/transform/transform_mode_curveshrinkfatten.c
index c4c33c881ed6fedd148ffe91622196201b0a8194..aa4d608de04ff51a8100e447e0e5a58be65f5d70 100644
--- a/source/blender/editors/transform/transform_mode_curveshrinkfatten.c
+++ b/source/blender/editors/transform/transform_mode_curveshrinkfatten.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_edge_bevelweight.c b/source/blender/editors/transform/transform_mode_edge_bevelweight.c
index 8aa7955bc2a15aafa9b5554e78682e31d4715b4b..987d8396907fc0627a47cad4538bd67c150e37de 100644
--- a/source/blender/editors/transform/transform_mode_edge_bevelweight.c
+++ b/source/blender/editors/transform/transform_mode_edge_bevelweight.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_edge_crease.c b/source/blender/editors/transform/transform_mode_edge_crease.c
index 60b95a1d2dafcdf6c285243a6cd84ce3d0ac49dc..f1acc2a4c9a39d5f7c9764c5e08ef7cd7a2d3f7c 100644
--- a/source/blender/editors/transform/transform_mode_edge_crease.c
+++ b/source/blender/editors/transform/transform_mode_edge_crease.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_edge_rotate_normal.c b/source/blender/editors/transform/transform_mode_edge_rotate_normal.c
index edba9809207c745d7149ac1fcdd2142375f9db13..2327aa4e9c40d4d72d01c1a1c225aee5f889e595 100644
--- a/source/blender/editors/transform/transform_mode_edge_rotate_normal.c
+++ b/source/blender/editors/transform/transform_mode_edge_rotate_normal.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_edge_seq_slide.c b/source/blender/editors/transform/transform_mode_edge_seq_slide.c
index fb70d04a5304fb265d598713d72893358e14cb39..9a7325627090635fa5d9a27520ed0d0740945d4f 100644
--- a/source/blender/editors/transform/transform_mode_edge_seq_slide.c
+++ b/source/blender/editors/transform/transform_mode_edge_seq_slide.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_edge_slide.c b/source/blender/editors/transform/transform_mode_edge_slide.c
index 223f2511c728608138b25b13e61dcf081571ae43..b8e9a0d1a4dfb424c422ed363f6311431320c255 100644
--- a/source/blender/editors/transform/transform_mode_edge_slide.c
+++ b/source/blender/editors/transform/transform_mode_edge_slide.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_gpopacity.c b/source/blender/editors/transform/transform_mode_gpopacity.c
index 5772c6b47177a31f202311987884378e8c95e937..83dce17d10427ad0ffe116dac42688a0b0ca397c 100644
--- a/source/blender/editors/transform/transform_mode_gpopacity.c
+++ b/source/blender/editors/transform/transform_mode_gpopacity.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_gpshrinkfatten.c b/source/blender/editors/transform/transform_mode_gpshrinkfatten.c
index f4a0c3c659ccd53ead84b0f1b0aa631c9c7283b5..796d5c7ae9c09927badd415ad256919058172873 100644
--- a/source/blender/editors/transform/transform_mode_gpshrinkfatten.c
+++ b/source/blender/editors/transform/transform_mode_gpshrinkfatten.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_maskshrinkfatten.c b/source/blender/editors/transform/transform_mode_maskshrinkfatten.c
index a1a8bed59b3d801de39b35dbaea5d817c3f9410d..19a3deade6333913a191c7f9e67f2cb970f714bd 100644
--- a/source/blender/editors/transform/transform_mode_maskshrinkfatten.c
+++ b/source/blender/editors/transform/transform_mode_maskshrinkfatten.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_mirror.c b/source/blender/editors/transform/transform_mode_mirror.c
index ee584cb9833d26902ae4f4e4febbbbe1eacae076..67fe3bddbaea01046caf28b78c95d412a485cdd5 100644
--- a/source/blender/editors/transform/transform_mode_mirror.c
+++ b/source/blender/editors/transform/transform_mode_mirror.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_push_pull.c b/source/blender/editors/transform/transform_mode_push_pull.c
index 8577a0a5e11429a1a2eaf07c7e595727a8e768fd..87309b45231ab8e3aa63edb8a518cdf20f3044b1 100644
--- a/source/blender/editors/transform/transform_mode_push_pull.c
+++ b/source/blender/editors/transform/transform_mode_push_pull.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_resize.c b/source/blender/editors/transform/transform_mode_resize.c
index 3d7f0aa6d67d1aa380010feffe80a52446beff84..ffae651e4aaed92dbd4bb62ad85407c8f92d4d2b 100644
--- a/source/blender/editors/transform/transform_mode_resize.c
+++ b/source/blender/editors/transform/transform_mode_resize.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_rotate.c b/source/blender/editors/transform/transform_mode_rotate.c
index e8ef71a6639c1567c623d0b09dd183b9387905ff..4b86adc4f46dfcd862eb9250afe6405fe2d03015 100644
--- a/source/blender/editors/transform/transform_mode_rotate.c
+++ b/source/blender/editors/transform/transform_mode_rotate.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_shear.c b/source/blender/editors/transform/transform_mode_shear.c
index 9369cb2e62b4fb8d67e7c64e9429dd46ae46f12b..68fe9f35965e168db786973cbaac1e155798c0a3 100644
--- a/source/blender/editors/transform/transform_mode_shear.c
+++ b/source/blender/editors/transform/transform_mode_shear.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_shrink_fatten.c b/source/blender/editors/transform/transform_mode_shrink_fatten.c
index 01dd1b701a56b95328019021edf1e732e21ee417..7596924a65fd49c0969bdd16f30b75aa8ed90106 100644
--- a/source/blender/editors/transform/transform_mode_shrink_fatten.c
+++ b/source/blender/editors/transform/transform_mode_shrink_fatten.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_skin_resize.c b/source/blender/editors/transform/transform_mode_skin_resize.c
index f5e502fed4f3dc013eb229bb605220c053d33e4f..8099449ec23ebece66d46bc98cd8fbb63acad55b 100644
--- a/source/blender/editors/transform/transform_mode_skin_resize.c
+++ b/source/blender/editors/transform/transform_mode_skin_resize.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_tilt.c b/source/blender/editors/transform/transform_mode_tilt.c
index 6451a7d77d5a5c04e74d9037998f618804ca94c4..881ec760ae9f4897a89184e145c35db711400b7d 100644
--- a/source/blender/editors/transform/transform_mode_tilt.c
+++ b/source/blender/editors/transform/transform_mode_tilt.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_timescale.c b/source/blender/editors/transform/transform_mode_timescale.c
index c198f235cf88b951e43944088fddc4c67b0fb23b..a4f46803143e62f07d0f9f902518f1ca157b6cb0 100644
--- a/source/blender/editors/transform/transform_mode_timescale.c
+++ b/source/blender/editors/transform/transform_mode_timescale.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_timeslide.c b/source/blender/editors/transform/transform_mode_timeslide.c
index 98abab0fd6bdf92e6dcab4c5a242747b926878c0..4d40c427ef7c206a2803fbaab6349fe06dfdfc0d 100644
--- a/source/blender/editors/transform/transform_mode_timeslide.c
+++ b/source/blender/editors/transform/transform_mode_timeslide.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_timetranslate.c b/source/blender/editors/transform/transform_mode_timetranslate.c
index 84ca5d3ae5498bc607f70f3d05408f58286c58c5..ea002129d0cd896ed277617149a263c2a89a78c8 100644
--- a/source/blender/editors/transform/transform_mode_timetranslate.c
+++ b/source/blender/editors/transform/transform_mode_timetranslate.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_tosphere.c b/source/blender/editors/transform/transform_mode_tosphere.c
index 2062f78c3268a3809da72b513869de378df074a7..58890e7a67c074bb5cdff2301e387f5026f4ac17 100644
--- a/source/blender/editors/transform/transform_mode_tosphere.c
+++ b/source/blender/editors/transform/transform_mode_tosphere.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_trackball.c b/source/blender/editors/transform/transform_mode_trackball.c
index ddffc4f843886d314ad43680912bd1393435e15a..2e405449bc3ea81a0cdf360b06649b8e854b006c 100644
--- a/source/blender/editors/transform/transform_mode_trackball.c
+++ b/source/blender/editors/transform/transform_mode_trackball.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_translate.c b/source/blender/editors/transform/transform_mode_translate.c
index b8b043c650f106714dd78400ea1a961a00572f05..c881cde351e096de09d678f63e823d77a0a0cf19 100644
--- a/source/blender/editors/transform/transform_mode_translate.c
+++ b/source/blender/editors/transform/transform_mode_translate.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_mode_vert_slide.c b/source/blender/editors/transform/transform_mode_vert_slide.c
index 48a8fcf60eb10871818a0c4e5c4cf762c0e0f565..0afc527d4a837644e59c1d72d6900a96f0841fe4 100644
--- a/source/blender/editors/transform/transform_mode_vert_slide.c
+++ b/source/blender/editors/transform/transform_mode_vert_slide.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_ops.c b/source/blender/editors/transform/transform_ops.c
index 80feb934f1a6046e803d05cbd4f3d0551d2c6d50..3722e83e45148c3908d26f073970a66f154bd818 100644
--- a/source/blender/editors/transform/transform_ops.c
+++ b/source/blender/editors/transform/transform_ops.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_orientations.c b/source/blender/editors/transform/transform_orientations.c
index 5ac5bccd69c348c8108a3b243825358815ee3d71..6ca61d415ead10ae343b31636bfa3082b88af381 100644
--- a/source/blender/editors/transform/transform_orientations.c
+++ b/source/blender/editors/transform/transform_orientations.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_orientations.h b/source/blender/editors/transform/transform_orientations.h
index dd2d5bc86c545f8187e71cfa5d2a1fedb1b7d8c4..5bca05b0c3ae826e16aad47b05ce02c4663b9801 100644
--- a/source/blender/editors/transform/transform_orientations.h
+++ b/source/blender/editors/transform/transform_orientations.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_snap.c b/source/blender/editors/transform/transform_snap.c
index 40be8e6e6411a055fb4faf78bbf10ba277cac1d5..69d71e6dbfd01dde992bbd59e80e758d6ff9f809 100644
--- a/source/blender/editors/transform/transform_snap.c
+++ b/source/blender/editors/transform/transform_snap.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_snap.h b/source/blender/editors/transform/transform_snap.h
index 389c1441db18a04123783d914ec48d50a34a8285..cde97d14be449e765beae81b397b85aa515a35b0 100644
--- a/source/blender/editors/transform/transform_snap.h
+++ b/source/blender/editors/transform/transform_snap.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/editors/transform/transform_snap_animation.c b/source/blender/editors/transform/transform_snap_animation.c
index 6ca16c171e22d30102e3707b1ffac38d499c1cfc..e4273affdb68893e9949343fcaecdb510edeb783 100644
--- a/source/blender/editors/transform/transform_snap_animation.c
+++ b/source/blender/editors/transform/transform_snap_animation.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_snap_object.c b/source/blender/editors/transform/transform_snap_object.c
index 9dc8b6cf69d9d518fa5f006127c0dfcf8e1bfb78..6ad5962226a0082e702bc9a7f2d7773743d2bcc9 100644
--- a/source/blender/editors/transform/transform_snap_object.c
+++ b/source/blender/editors/transform/transform_snap_object.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/transform/transform_snap_sequencer.c b/source/blender/editors/transform/transform_snap_sequencer.c
index 7bcf6812ce911e3b321cee0aaa9fbb6258960009..85e20d372788592da4c0ac1649d095113273c85e 100644
--- a/source/blender/editors/transform/transform_snap_sequencer.c
+++ b/source/blender/editors/transform/transform_snap_sequencer.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edtransform
diff --git a/source/blender/editors/undo/CMakeLists.txt b/source/blender/editors/undo/CMakeLists.txt
index 6f659e383fe88ca324c0f8674b95ce7be2dc917f..284b725cdf009d2fa158ebda873959765c6f3a3b 100644
--- a/source/blender/editors/undo/CMakeLists.txt
+++ b/source/blender/editors/undo/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/undo/ed_undo.c b/source/blender/editors/undo/ed_undo.c
index c6fa5acfff50dcf9963f11efcb887dc346560ebb..ce14e6b180fe194018b06cc5d489cf7c79412f8d 100644
--- a/source/blender/editors/undo/ed_undo.c
+++ b/source/blender/editors/undo/ed_undo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edundo
diff --git a/source/blender/editors/undo/memfile_undo.c b/source/blender/editors/undo/memfile_undo.c
index b6ad56038089ec242e30f777aafbdcc67615c920..891719fde3365ef3732b53d36934cbb3cec944a1 100644
--- a/source/blender/editors/undo/memfile_undo.c
+++ b/source/blender/editors/undo/memfile_undo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edundo
diff --git a/source/blender/editors/undo/undo_intern.h b/source/blender/editors/undo/undo_intern.h
index d27bc1c8c0aa13d5ca28397b793631117b93d0bd..b7fd4dff5ba2191a0a375c7c7777520a894b821f 100644
--- a/source/blender/editors/undo/undo_intern.h
+++ b/source/blender/editors/undo/undo_intern.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edundo
diff --git a/source/blender/editors/undo/undo_system_types.c b/source/blender/editors/undo/undo_system_types.c
index 300ab606a031f9e19de2f47e9501431634ae6d4b..a4d6df9b5c2d51ade0b3a4ad8d90b44e16c0763d 100644
--- a/source/blender/editors/undo/undo_system_types.c
+++ b/source/blender/editors/undo/undo_system_types.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edundo
diff --git a/source/blender/editors/util/CMakeLists.txt b/source/blender/editors/util/CMakeLists.txt
index 66cda0fc3f81125e8d6a5065a82c14222bb0b1ad..b01a696edc5db74360ddd9599519baadf33f1a2b 100644
--- a/source/blender/editors/util/CMakeLists.txt
+++ b/source/blender/editors/util/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/util/ed_draw.c b/source/blender/editors/util/ed_draw.c
index 3e85862a847c55485a9d03cf8cd3390c40493f29..acf7fd713fa096c6ecdfe6dc2af4f79b216fcd8f 100644
--- a/source/blender/editors/util/ed_draw.c
+++ b/source/blender/editors/util/ed_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edutil
diff --git a/source/blender/editors/util/ed_transverts.c b/source/blender/editors/util/ed_transverts.c
index b9e90670a4d2d8c7d00cfc4e92160484df45e96d..0523a58825ec526d9c7c0e2db924bb290537ee6a 100644
--- a/source/blender/editors/util/ed_transverts.c
+++ b/source/blender/editors/util/ed_transverts.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup edutil
diff --git a/source/blender/editors/util/ed_util.c b/source/blender/editors/util/ed_util.c
index e86392e47ab54900ebcbca461567554ae43ea7a8..15fe944be49224201cbd4cf416f0c2e1a85c93b5 100644
--- a/source/blender/editors/util/ed_util.c
+++ b/source/blender/editors/util/ed_util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edutil
diff --git a/source/blender/editors/util/ed_util_imbuf.c b/source/blender/editors/util/ed_util_imbuf.c
index 2e983eeff39bb1d405d16f21a3e83ad42a12ead6..cf6f26652a77a2c8ce537bb4b213be92f9d41011 100644
--- a/source/blender/editors/util/ed_util_imbuf.c
+++ b/source/blender/editors/util/ed_util_imbuf.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup edutil
diff --git a/source/blender/editors/util/ed_util_ops.cc b/source/blender/editors/util/ed_util_ops.cc
index ae37dab7bb4ca9072fe41256ad4f06ac626e0257..014944da91624fe3fed8feed25928a4dc284a039 100644
--- a/source/blender/editors/util/ed_util_ops.cc
+++ b/source/blender/editors/util/ed_util_ops.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edutil
diff --git a/source/blender/editors/util/gizmo_utils.c b/source/blender/editors/util/gizmo_utils.c
index 99df194f0eb9edcfb9da3f904005914d75191a03..b0b70eb995800a72bc787018d3a78f1663133ff5 100644
--- a/source/blender/editors/util/gizmo_utils.c
+++ b/source/blender/editors/util/gizmo_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edutil
diff --git a/source/blender/editors/util/numinput.c b/source/blender/editors/util/numinput.c
index 583e4060a9a43a0fc51a3babcc7740c524935174..3bf226f6ba182ff3df4fa00529f4d365a9d38098 100644
--- a/source/blender/editors/util/numinput.c
+++ b/source/blender/editors/util/numinput.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edutil
diff --git a/source/blender/editors/util/select_utils.c b/source/blender/editors/util/select_utils.c
index c7bb26db1bd3ef1d449808c75069f820c1db0b1a..b6893c3032a601f62c4cc2040362e4155904c841 100644
--- a/source/blender/editors/util/select_utils.c
+++ b/source/blender/editors/util/select_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup edutil
diff --git a/source/blender/editors/uvedit/CMakeLists.txt b/source/blender/editors/uvedit/CMakeLists.txt
index a3b29f29354bd0551cdaea1a2a77e97a181928d3..681bb420827ef76efff7de93aef1228db9e1d12b 100644
--- a/source/blender/editors/uvedit/CMakeLists.txt
+++ b/source/blender/editors/uvedit/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   ../include
diff --git a/source/blender/editors/uvedit/uvedit_buttons.c b/source/blender/editors/uvedit/uvedit_buttons.c
index 5ed75a1004cc200bd1b880926701128da8bbe294..6192ae56d650e039a84517802242bf2d35d6d072 100644
--- a/source/blender/editors/uvedit/uvedit_buttons.c
+++ b/source/blender/editors/uvedit/uvedit_buttons.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup eduv
diff --git a/source/blender/editors/uvedit/uvedit_draw.c b/source/blender/editors/uvedit/uvedit_draw.c
index a4ab9164017e970b5d7f61f7cdd3d60077967143..a083ded175244c5fc55fd68faf3e5ed7d46f43f4 100644
--- a/source/blender/editors/uvedit/uvedit_draw.c
+++ b/source/blender/editors/uvedit/uvedit_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup eduv
diff --git a/source/blender/editors/uvedit/uvedit_intern.h b/source/blender/editors/uvedit/uvedit_intern.h
index 9646444c10383a515858dc18366669b73caed3a1..42f0a32ea6f89b9a072a2da2a8c436177af9d1aa 100644
--- a/source/blender/editors/uvedit/uvedit_intern.h
+++ b/source/blender/editors/uvedit/uvedit_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup eduv
diff --git a/source/blender/editors/uvedit/uvedit_islands.c b/source/blender/editors/uvedit/uvedit_islands.c
index 63a7ab6ab2dbc7f882bec63abe77f5371d6f033a..59992d23e2ec94d2ba918689f7a8682c6803dba6 100644
--- a/source/blender/editors/uvedit/uvedit_islands.c
+++ b/source/blender/editors/uvedit/uvedit_islands.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup eduv
diff --git a/source/blender/editors/uvedit/uvedit_ops.c b/source/blender/editors/uvedit/uvedit_ops.c
index 64e1fa2f7683affbcbe2ee539389c3bba1b53291..3d5b9207ad15326fb9ff05f669d67283227a4c8c 100644
--- a/source/blender/editors/uvedit/uvedit_ops.c
+++ b/source/blender/editors/uvedit/uvedit_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup eduv
diff --git a/source/blender/editors/uvedit/uvedit_parametrizer.c b/source/blender/editors/uvedit/uvedit_parametrizer.c
index b4bdeace7164f63ef4aa4a050ef73c21abed6831..53b8a541dba99b7908baccddc40a3d40c7fdc151 100644
--- a/source/blender/editors/uvedit/uvedit_parametrizer.c
+++ b/source/blender/editors/uvedit/uvedit_parametrizer.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup eduv
diff --git a/source/blender/editors/uvedit/uvedit_parametrizer.h b/source/blender/editors/uvedit/uvedit_parametrizer.h
index e69ce360e61ca0e08df227b630ab89c23cbf55cf..f234fbe2aceb499af57edd8939c3084abc5aa30b 100644
--- a/source/blender/editors/uvedit/uvedit_parametrizer.h
+++ b/source/blender/editors/uvedit/uvedit_parametrizer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/editors/uvedit/uvedit_path.c b/source/blender/editors/uvedit/uvedit_path.c
index 2613c5b23a0c47f8bef1d732c916a24a7a1fe7cd..225b595852f0c01e596f51945553085f9d11a5d4 100644
--- a/source/blender/editors/uvedit/uvedit_path.c
+++ b/source/blender/editors/uvedit/uvedit_path.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup eduv
diff --git a/source/blender/editors/uvedit/uvedit_rip.c b/source/blender/editors/uvedit/uvedit_rip.c
index 7e4b18340c553c87e4c6d014a73b54b3be541f74..272540d61c7fa68bc18a8574e146010f9883031a 100644
--- a/source/blender/editors/uvedit/uvedit_rip.c
+++ b/source/blender/editors/uvedit/uvedit_rip.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup eduv
diff --git a/source/blender/editors/uvedit/uvedit_select.c b/source/blender/editors/uvedit/uvedit_select.c
index 72fd31503def3fcd6c1c8c86d01bd316e75ea6bb..75bcf7c546e928533a561edb7e95cbbc748e991c 100644
--- a/source/blender/editors/uvedit/uvedit_select.c
+++ b/source/blender/editors/uvedit/uvedit_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup eduv
diff --git a/source/blender/editors/uvedit/uvedit_smart_stitch.c b/source/blender/editors/uvedit/uvedit_smart_stitch.c
index c5485cc1495c8570b7c6978bccfe4406157a3edd..91b29049ecfb05ae51ee8451e561b14cac8eae37 100644
--- a/source/blender/editors/uvedit/uvedit_smart_stitch.c
+++ b/source/blender/editors/uvedit/uvedit_smart_stitch.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup eduv
diff --git a/source/blender/editors/uvedit/uvedit_unwrap_ops.c b/source/blender/editors/uvedit/uvedit_unwrap_ops.c
index 362e020f306bdfe7e305a6dbffa28e719daeb4ed..d6400e9340f8e9001dc4c3d48e8bb49399a95ca1 100644
--- a/source/blender/editors/uvedit/uvedit_unwrap_ops.c
+++ b/source/blender/editors/uvedit/uvedit_unwrap_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup eduv
diff --git a/source/blender/freestyle/CMakeLists.txt b/source/blender/freestyle/CMakeLists.txt
index 948e68e52da2b41e0135e182908a0d30c5907d21..8276d503a3b27fc13051c0ba2f9d45362c141985 100644
--- a/source/blender/freestyle/CMakeLists.txt
+++ b/source/blender/freestyle/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(SRC
   FRS_freestyle.h
diff --git a/source/blender/freestyle/FRS_freestyle.h b/source/blender/freestyle/FRS_freestyle.h
index 77e906c6ea512d48914d73a5525bc3f1c06a8fc7..4a658a4a791f6c2c305d221fe7f509dc6b9f8818 100644
--- a/source/blender/freestyle/FRS_freestyle.h
+++ b/source/blender/freestyle/FRS_freestyle.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/application/AppCanvas.cpp b/source/blender/freestyle/intern/application/AppCanvas.cpp
index 9187e0ebb0594c6bfccce547e3f40207a84ea16b..ee316bbf2206d35cecafca4fbcfe8673451114a0 100644
--- a/source/blender/freestyle/intern/application/AppCanvas.cpp
+++ b/source/blender/freestyle/intern/application/AppCanvas.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/application/AppCanvas.h b/source/blender/freestyle/intern/application/AppCanvas.h
index 8329192e6d6b9c5c2bc277c0813e35028f655f4e..d27cdfa2e6cbb66cd449cf881cca1fbd02519678 100644
--- a/source/blender/freestyle/intern/application/AppCanvas.h
+++ b/source/blender/freestyle/intern/application/AppCanvas.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/application/AppConfig.cpp b/source/blender/freestyle/intern/application/AppConfig.cpp
index 90ded5045dc915be238294f5588136f4a1c4a65d..30b2f903c5a18b857dc74038d3b61728ad6b5c2f 100644
--- a/source/blender/freestyle/intern/application/AppConfig.cpp
+++ b/source/blender/freestyle/intern/application/AppConfig.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/application/AppConfig.h b/source/blender/freestyle/intern/application/AppConfig.h
index adb6d906e68f2c4bf0b01cb0dbe9b0d846bab7b6..36a93dce15db9679f8d89af1e4cf940f6b456e2b 100644
--- a/source/blender/freestyle/intern/application/AppConfig.h
+++ b/source/blender/freestyle/intern/application/AppConfig.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/application/AppView.cpp b/source/blender/freestyle/intern/application/AppView.cpp
index 5cd30a61712a11476cd7e8aa868c83399d6b45c5..1413311641b6524a0a9a75d2e3d0d53e81fc4949 100644
--- a/source/blender/freestyle/intern/application/AppView.cpp
+++ b/source/blender/freestyle/intern/application/AppView.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/application/AppView.h b/source/blender/freestyle/intern/application/AppView.h
index c8ecbc9eadc66043512e153d08eeb6a7e6a227c5..0e783f41964ab325f896252dad18abc5b009e77e 100644
--- a/source/blender/freestyle/intern/application/AppView.h
+++ b/source/blender/freestyle/intern/application/AppView.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/application/Controller.cpp b/source/blender/freestyle/intern/application/Controller.cpp
index 0d243a812fae08988b53d4d4fdd747a02e2b19a6..024bc80f3fa26e82d44cf78b3a6fa2c4a52ae5ea 100644
--- a/source/blender/freestyle/intern/application/Controller.cpp
+++ b/source/blender/freestyle/intern/application/Controller.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/application/Controller.h b/source/blender/freestyle/intern/application/Controller.h
index 6c41733db3668716b179211b3537a7a3e2458c12..b5ef0fba1f7b521b4e4e7a1a74f203ea9e740f22 100644
--- a/source/blender/freestyle/intern/application/Controller.h
+++ b/source/blender/freestyle/intern/application/Controller.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/blender_interface/BlenderFileLoader.cpp b/source/blender/freestyle/intern/blender_interface/BlenderFileLoader.cpp
index 9c3270e788c8497ede012b10721110ad89b656dd..9304e6aa3fb309f267195f6b7e9f7410b71aa6f5 100644
--- a/source/blender/freestyle/intern/blender_interface/BlenderFileLoader.cpp
+++ b/source/blender/freestyle/intern/blender_interface/BlenderFileLoader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/blender_interface/BlenderFileLoader.h b/source/blender/freestyle/intern/blender_interface/BlenderFileLoader.h
index 8fbda2b55f443f1b399aee9e24ce07f03cd211ba..bdcd62bed01c5aac3e018d4db5ce311a6259f209 100644
--- a/source/blender/freestyle/intern/blender_interface/BlenderFileLoader.h
+++ b/source/blender/freestyle/intern/blender_interface/BlenderFileLoader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/blender_interface/BlenderStrokeRenderer.cpp b/source/blender/freestyle/intern/blender_interface/BlenderStrokeRenderer.cpp
index 455d3b5b236b612ae17ef67c044c3271f80aa2c6..25a1118393e6bb5f5daa944dc39e2cf572ce32ce 100644
--- a/source/blender/freestyle/intern/blender_interface/BlenderStrokeRenderer.cpp
+++ b/source/blender/freestyle/intern/blender_interface/BlenderStrokeRenderer.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/blender_interface/BlenderStrokeRenderer.h b/source/blender/freestyle/intern/blender_interface/BlenderStrokeRenderer.h
index beee7453b4cb4c61f06d573a4923d47cc3946554..7645165f5cce91071139ec5904218d55ef4c83d0 100644
--- a/source/blender/freestyle/intern/blender_interface/BlenderStrokeRenderer.h
+++ b/source/blender/freestyle/intern/blender_interface/BlenderStrokeRenderer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/blender_interface/BlenderStyleModule.h b/source/blender/freestyle/intern/blender_interface/BlenderStyleModule.h
index e7636e2453a9f37b87253922d03e05a222639fe6..1c4b8810918ed35aa6294a913828030c2e87392c 100644
--- a/source/blender/freestyle/intern/blender_interface/BlenderStyleModule.h
+++ b/source/blender/freestyle/intern/blender_interface/BlenderStyleModule.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/blender_interface/FRS_freestyle.cpp b/source/blender/freestyle/intern/blender_interface/FRS_freestyle.cpp
index ce80ed78594c86c54e54097555c655faaab1bc11..b7aae20a5ea457a60980b274d9f631528a3f4e90 100644
--- a/source/blender/freestyle/intern/blender_interface/FRS_freestyle.cpp
+++ b/source/blender/freestyle/intern/blender_interface/FRS_freestyle.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/geometry/BBox.h b/source/blender/freestyle/intern/geometry/BBox.h
index d9a070faa552bbbb0fd766c69772d76e29fc1ebe..3bd3555cacbb51983983702753960b8d6790bef7 100644
--- a/source/blender/freestyle/intern/geometry/BBox.h
+++ b/source/blender/freestyle/intern/geometry/BBox.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/Bezier.cpp b/source/blender/freestyle/intern/geometry/Bezier.cpp
index bf4a78b12c533e4936da44b239db6cbbf21dd0cb..b12b189853c1ed5ab3956acbe04cbab6df852ee9 100644
--- a/source/blender/freestyle/intern/geometry/Bezier.cpp
+++ b/source/blender/freestyle/intern/geometry/Bezier.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/geometry/Bezier.h b/source/blender/freestyle/intern/geometry/Bezier.h
index 83b033c105a3d014f76bc876fa065fa2f5fd7b68..8630a2f13643688ec03f98ba985697cf87e2e3b9 100644
--- a/source/blender/freestyle/intern/geometry/Bezier.h
+++ b/source/blender/freestyle/intern/geometry/Bezier.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/FastGrid.cpp b/source/blender/freestyle/intern/geometry/FastGrid.cpp
index 0f1edd647c7376b6fc9c2194d34b51db5bce235e..442087040bca6ebb60b48f1131295f13bdef0d00 100644
--- a/source/blender/freestyle/intern/geometry/FastGrid.cpp
+++ b/source/blender/freestyle/intern/geometry/FastGrid.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/geometry/FastGrid.h b/source/blender/freestyle/intern/geometry/FastGrid.h
index 524725d546437527e4c9f4d7e64576f0ffe7efa5..3d9ec6a64caaf9ae8a9a75278526e04024eeb9e8 100644
--- a/source/blender/freestyle/intern/geometry/FastGrid.h
+++ b/source/blender/freestyle/intern/geometry/FastGrid.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/FitCurve.cpp b/source/blender/freestyle/intern/geometry/FitCurve.cpp
index eb5a24f7373a1cd0387cef3c51c5c3f7ab633d5a..eb53fd1257c9a7a75bda6fa43761b388e03ea405 100644
--- a/source/blender/freestyle/intern/geometry/FitCurve.cpp
+++ b/source/blender/freestyle/intern/geometry/FitCurve.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/geometry/FitCurve.h b/source/blender/freestyle/intern/geometry/FitCurve.h
index 3e99893d66fc3ae8a0e6ee5716bcc4824c5e67e5..f9cc71d33aeca0d285b73e2ecc77d9005b1804be 100644
--- a/source/blender/freestyle/intern/geometry/FitCurve.h
+++ b/source/blender/freestyle/intern/geometry/FitCurve.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/Geom.h b/source/blender/freestyle/intern/geometry/Geom.h
index 53703c3497a30f57120ed6f411e2a61d8306527d..087b89833d23c13a68ad9f356efab6121fb3ad27 100644
--- a/source/blender/freestyle/intern/geometry/Geom.h
+++ b/source/blender/freestyle/intern/geometry/Geom.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/GeomCleaner.cpp b/source/blender/freestyle/intern/geometry/GeomCleaner.cpp
index 349347c18629e087959b2e16bde933a9f3f0da0b..116154650f30a64b84f0804adbe11fc503b94e51 100644
--- a/source/blender/freestyle/intern/geometry/GeomCleaner.cpp
+++ b/source/blender/freestyle/intern/geometry/GeomCleaner.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/geometry/GeomCleaner.h b/source/blender/freestyle/intern/geometry/GeomCleaner.h
index 6ad1f040972123a659bb9d47e2bab3a97ad42f69..041589f721a35e0fea48c90261d71c913b003f4c 100644
--- a/source/blender/freestyle/intern/geometry/GeomCleaner.h
+++ b/source/blender/freestyle/intern/geometry/GeomCleaner.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/GeomUtils.cpp b/source/blender/freestyle/intern/geometry/GeomUtils.cpp
index d3a3d8bc76e60ea5a762c3091aab3a735d4c58a3..ca1fb63ec64411d839bc2b25fd01fb2dda85469b 100644
--- a/source/blender/freestyle/intern/geometry/GeomUtils.cpp
+++ b/source/blender/freestyle/intern/geometry/GeomUtils.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/geometry/GeomUtils.h b/source/blender/freestyle/intern/geometry/GeomUtils.h
index a3ef88115f24491cf7c6c426034ec61e15bc4aa7..f5d5a56e149cec5787e209b5678bee0e7abf4b5b 100644
--- a/source/blender/freestyle/intern/geometry/GeomUtils.h
+++ b/source/blender/freestyle/intern/geometry/GeomUtils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/Grid.cpp b/source/blender/freestyle/intern/geometry/Grid.cpp
index fad5a63ea4f69535210167a5409dd0e9ba3fa888..2b2272959e4244f99526b6b4bbc5cfe0f24e745b 100644
--- a/source/blender/freestyle/intern/geometry/Grid.cpp
+++ b/source/blender/freestyle/intern/geometry/Grid.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/geometry/Grid.h b/source/blender/freestyle/intern/geometry/Grid.h
index e63010635643b7d27583e3fbf6c5d8b840029efb..c25594e620fa6cad48694984ddb021f1f72cc4ac 100644
--- a/source/blender/freestyle/intern/geometry/Grid.h
+++ b/source/blender/freestyle/intern/geometry/Grid.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/GridHelpers.cpp b/source/blender/freestyle/intern/geometry/GridHelpers.cpp
index ee64b83f19e733c84006cdbfa31d03bb1fab140f..49e950fd6c9862518e6b30e29e98984a0533c6fc 100644
--- a/source/blender/freestyle/intern/geometry/GridHelpers.cpp
+++ b/source/blender/freestyle/intern/geometry/GridHelpers.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/geometry/GridHelpers.h b/source/blender/freestyle/intern/geometry/GridHelpers.h
index 1eab92be889e706ea85d102114b20027240c9d56..06e96ddf6e6025891bb9f18de67be3d7f3b84d9b 100644
--- a/source/blender/freestyle/intern/geometry/GridHelpers.h
+++ b/source/blender/freestyle/intern/geometry/GridHelpers.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/HashGrid.cpp b/source/blender/freestyle/intern/geometry/HashGrid.cpp
index bc24290c92a6db1188293c64fb01f3d3c30d686d..c86aa4fd22c318a40de377165ddccc5be5f98f79 100644
--- a/source/blender/freestyle/intern/geometry/HashGrid.cpp
+++ b/source/blender/freestyle/intern/geometry/HashGrid.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/geometry/HashGrid.h b/source/blender/freestyle/intern/geometry/HashGrid.h
index 74df4a355d15f9974cc9ca68feb6a56f2adaa680..b08334d3474054248d66e3a073e112943522ea7a 100644
--- a/source/blender/freestyle/intern/geometry/HashGrid.h
+++ b/source/blender/freestyle/intern/geometry/HashGrid.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/Noise.cpp b/source/blender/freestyle/intern/geometry/Noise.cpp
index e3ea2ac154f69bb065367dc0b40b7a2e579ec141..d8a09bd8ab71b3b4891639caa1ed4c8c28acbacf 100644
--- a/source/blender/freestyle/intern/geometry/Noise.cpp
+++ b/source/blender/freestyle/intern/geometry/Noise.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/geometry/Noise.h b/source/blender/freestyle/intern/geometry/Noise.h
index 278444712df2b0ffd06d1881a19348fdb1701d3e..79cd52c00f625b1714c46a16f10c6dd1201ac0a8 100644
--- a/source/blender/freestyle/intern/geometry/Noise.h
+++ b/source/blender/freestyle/intern/geometry/Noise.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/Polygon.h b/source/blender/freestyle/intern/geometry/Polygon.h
index 34511bf4e34fa6bf2bcda558c29652de48dfb630..d606cd8b282071db46495de8a586659ec1e89bd1 100644
--- a/source/blender/freestyle/intern/geometry/Polygon.h
+++ b/source/blender/freestyle/intern/geometry/Polygon.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/SweepLine.h b/source/blender/freestyle/intern/geometry/SweepLine.h
index 1beae73b68a2dcdd78d8719ddf5399a9a0966d67..1165e1bf0640ccc90f53b29769e663d8908072f9 100644
--- a/source/blender/freestyle/intern/geometry/SweepLine.h
+++ b/source/blender/freestyle/intern/geometry/SweepLine.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/VecMat.h b/source/blender/freestyle/intern/geometry/VecMat.h
index 64c3213560cab13f5f0a518121f69b0c23e5fc78..e44444a270a818bc8142abfa7abc0e5b3c977719 100644
--- a/source/blender/freestyle/intern/geometry/VecMat.h
+++ b/source/blender/freestyle/intern/geometry/VecMat.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/matrix_util.cpp b/source/blender/freestyle/intern/geometry/matrix_util.cpp
index c917e9c87fd39f70a4ce2108a932a1fa509ebd7a..ecf5443a957e9f0115a30412ddb4a0d0360db085 100644
--- a/source/blender/freestyle/intern/geometry/matrix_util.cpp
+++ b/source/blender/freestyle/intern/geometry/matrix_util.cpp
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * The Original Code is:
  *   GXML/Graphite: Geometry and Graphics Programming Library + Utilities
- *   Copyright 2000 Bruno Levy <levy@loria.fr>
- */
+ *   Copyright 2000 Bruno Levy <levy@loria.fr> */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/geometry/matrix_util.h b/source/blender/freestyle/intern/geometry/matrix_util.h
index 147e25e96082e7eca36824f71810f04b4ab48734..d5989079a3303e9190a1600b50f61f6746762eaf 100644
--- a/source/blender/freestyle/intern/geometry/matrix_util.h
+++ b/source/blender/freestyle/intern/geometry/matrix_util.h
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * The Original Code is:
  *   GXML/Graphite: Geometry and Graphics Programming Library + Utilities
- *   Copyright 2000 Bruno Levy <levy@loria.fr>
- */
+ *   Copyright 2000 Bruno Levy <levy@loria.fr> */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/geometry/normal_cycle.cpp b/source/blender/freestyle/intern/geometry/normal_cycle.cpp
index fbcbeb220df0fea8c915db3971df5b9979c1ec15..0ad404e29266b06199a8ad795550b4ecfd33f6db 100644
--- a/source/blender/freestyle/intern/geometry/normal_cycle.cpp
+++ b/source/blender/freestyle/intern/geometry/normal_cycle.cpp
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * The Original Code is:
  *   OGF/Graphite: Geometry and Graphics Programming Library + Utilities
- *   Copyright 2000 Bruno Levy <levy@loria.fr>
- */
+ *   Copyright 2000 Bruno Levy <levy@loria.fr> */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/geometry/normal_cycle.h b/source/blender/freestyle/intern/geometry/normal_cycle.h
index 1fb59bcad19c5c06f73c1c57f32fe4a198ad6f30..7c99f63005f2986cbd932b5a01f8de5409dceb39 100644
--- a/source/blender/freestyle/intern/geometry/normal_cycle.h
+++ b/source/blender/freestyle/intern/geometry/normal_cycle.h
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * The Original Code is:
  *   OGF/Graphite: Geometry and Graphics Programming Library + Utilities
- *   Copyright 2000 Bruno Levy <levy@loria.fr>
- */
+ *   Copyright 2000 Bruno Levy <levy@loria.fr> */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/image/GaussianFilter.cpp b/source/blender/freestyle/intern/image/GaussianFilter.cpp
index 3c8bf5bd3a182ef76db65114e11cc5d9f7ea1c93..7e523311d4c0c4ba82ee61656ddbda59e83b6b00 100644
--- a/source/blender/freestyle/intern/image/GaussianFilter.cpp
+++ b/source/blender/freestyle/intern/image/GaussianFilter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/image/GaussianFilter.h b/source/blender/freestyle/intern/image/GaussianFilter.h
index f6bfdbd31b0cff58b734cf835dd0b99f263c6f15..b51db00397d5581f8c3cbecc6528a936f490033e 100644
--- a/source/blender/freestyle/intern/image/GaussianFilter.h
+++ b/source/blender/freestyle/intern/image/GaussianFilter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/image/Image.h b/source/blender/freestyle/intern/image/Image.h
index 21cb435b13a5b6a15fc4d3f83fcaefed923de1a3..cbf8720aadb52dff61774ab84c04cb5d0cfe4ba4 100644
--- a/source/blender/freestyle/intern/image/Image.h
+++ b/source/blender/freestyle/intern/image/Image.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/image/ImagePyramid.cpp b/source/blender/freestyle/intern/image/ImagePyramid.cpp
index b6779669a156d9fc35cc4ad4b5629d9aa6312d30..2a555a229150fc78c449744eaa19e425e127c7fe 100644
--- a/source/blender/freestyle/intern/image/ImagePyramid.cpp
+++ b/source/blender/freestyle/intern/image/ImagePyramid.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/image/ImagePyramid.h b/source/blender/freestyle/intern/image/ImagePyramid.h
index 66df1ec728ae63b1f8a0997f0fbde29ec993f21f..5f3089f859700af86559622c886cc86ce2576f84 100644
--- a/source/blender/freestyle/intern/image/ImagePyramid.h
+++ b/source/blender/freestyle/intern/image/ImagePyramid.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/python/BPy_BBox.cpp b/source/blender/freestyle/intern/python/BPy_BBox.cpp
index 509be04ee3f779771b94f2093974d0ba4891007d..8fb5f60eff7d1e9cc70ae313299e61205a8d4173 100644
--- a/source/blender/freestyle/intern/python/BPy_BBox.cpp
+++ b/source/blender/freestyle/intern/python/BPy_BBox.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_BBox.h b/source/blender/freestyle/intern/python/BPy_BBox.h
index 9d81a62bbccff8c025302be78491471135bfab77..3e4f18fbc848f3aa6c0358732493c173aab19215 100644
--- a/source/blender/freestyle/intern/python/BPy_BBox.h
+++ b/source/blender/freestyle/intern/python/BPy_BBox.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_BinaryPredicate0D.cpp b/source/blender/freestyle/intern/python/BPy_BinaryPredicate0D.cpp
index 6431fd3bcd990c94a9b886dd639b2ecadf5b7008..6669c021f27ab8536c2473bd094e2505386aab33 100644
--- a/source/blender/freestyle/intern/python/BPy_BinaryPredicate0D.cpp
+++ b/source/blender/freestyle/intern/python/BPy_BinaryPredicate0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_BinaryPredicate0D.h b/source/blender/freestyle/intern/python/BPy_BinaryPredicate0D.h
index 0d49409238852cb3c702a2bf90228edc746c4b6f..dcbc5b4b9d55456ff513d3bce7b8fc3a5bcd608a 100644
--- a/source/blender/freestyle/intern/python/BPy_BinaryPredicate0D.h
+++ b/source/blender/freestyle/intern/python/BPy_BinaryPredicate0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_BinaryPredicate1D.cpp b/source/blender/freestyle/intern/python/BPy_BinaryPredicate1D.cpp
index a623d359189d9ca79a40033abf2daecf3dc3e921..496900a712b1c89aad31606ca3549f94c3a52b3c 100644
--- a/source/blender/freestyle/intern/python/BPy_BinaryPredicate1D.cpp
+++ b/source/blender/freestyle/intern/python/BPy_BinaryPredicate1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_BinaryPredicate1D.h b/source/blender/freestyle/intern/python/BPy_BinaryPredicate1D.h
index 3e5ff76b5f91ec2f4ec6b67f4c39889290096e38..7a296bbac330c09b81eaa363f651cd78171d93b2 100644
--- a/source/blender/freestyle/intern/python/BPy_BinaryPredicate1D.h
+++ b/source/blender/freestyle/intern/python/BPy_BinaryPredicate1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_ContextFunctions.cpp b/source/blender/freestyle/intern/python/BPy_ContextFunctions.cpp
index e01d09bfe21b4af725b394862208360cbf4a377d..16b08722fb2e408bfc17d2b44576ebbc77f5ae3c 100644
--- a/source/blender/freestyle/intern/python/BPy_ContextFunctions.cpp
+++ b/source/blender/freestyle/intern/python/BPy_ContextFunctions.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_ContextFunctions.h b/source/blender/freestyle/intern/python/BPy_ContextFunctions.h
index 4cc04379f18832aef83f14dc50c6d00f850bcded..01507f1881c4a59870090861347b560271e72372 100644
--- a/source/blender/freestyle/intern/python/BPy_ContextFunctions.h
+++ b/source/blender/freestyle/intern/python/BPy_ContextFunctions.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Convert.cpp b/source/blender/freestyle/intern/python/BPy_Convert.cpp
index 99ba3090137af14d39dbeb9334cbc7e18fd90136..55a337204659dfa3eda6ee97f776a256eee49eec 100644
--- a/source/blender/freestyle/intern/python/BPy_Convert.cpp
+++ b/source/blender/freestyle/intern/python/BPy_Convert.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Convert.h b/source/blender/freestyle/intern/python/BPy_Convert.h
index e09161968085f9de141e34cc8ab7e974b670b0de..46665cd10f04d7bd5e8bbd191053b44b6edba033 100644
--- a/source/blender/freestyle/intern/python/BPy_Convert.h
+++ b/source/blender/freestyle/intern/python/BPy_Convert.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Freestyle.cpp b/source/blender/freestyle/intern/python/BPy_Freestyle.cpp
index 2d0021a1fe80de55ed6c47de02937ab31f6c70ad..fccb43d5e8048465f83a32b316853e0accbe0206 100644
--- a/source/blender/freestyle/intern/python/BPy_Freestyle.cpp
+++ b/source/blender/freestyle/intern/python/BPy_Freestyle.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Freestyle.h b/source/blender/freestyle/intern/python/BPy_Freestyle.h
index f63eb0d8466d55769fc84d35c3c7e2c7abad31e8..dc0524f5b49868947b314689f6755f4f5909b744 100644
--- a/source/blender/freestyle/intern/python/BPy_Freestyle.h
+++ b/source/blender/freestyle/intern/python/BPy_Freestyle.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_FrsMaterial.cpp b/source/blender/freestyle/intern/python/BPy_FrsMaterial.cpp
index deec1fb681d8f77b7c34838846a63720253bbf9e..bd37e84761e1dd926a155a8c952ee0dbfd1c47f1 100644
--- a/source/blender/freestyle/intern/python/BPy_FrsMaterial.cpp
+++ b/source/blender/freestyle/intern/python/BPy_FrsMaterial.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_FrsMaterial.h b/source/blender/freestyle/intern/python/BPy_FrsMaterial.h
index 1104e2d5d77ae92c4429d442d5a5ab2bbc129865..cddb44f0dddf81de761bc6e21ddbd14efd73687e 100644
--- a/source/blender/freestyle/intern/python/BPy_FrsMaterial.h
+++ b/source/blender/freestyle/intern/python/BPy_FrsMaterial.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_FrsNoise.cpp b/source/blender/freestyle/intern/python/BPy_FrsNoise.cpp
index 959c5ec707460ed110538e9da53847c88fc83b56..5bdc8ce16e871887e5a457cc373a69169b2a0dff 100644
--- a/source/blender/freestyle/intern/python/BPy_FrsNoise.cpp
+++ b/source/blender/freestyle/intern/python/BPy_FrsNoise.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_FrsNoise.h b/source/blender/freestyle/intern/python/BPy_FrsNoise.h
index ac53282eb2a4a8354aac3c55d2153ec3755583f3..50b4eada72f9879b523057d8629d623560404cc6 100644
--- a/source/blender/freestyle/intern/python/BPy_FrsNoise.h
+++ b/source/blender/freestyle/intern/python/BPy_FrsNoise.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Id.cpp b/source/blender/freestyle/intern/python/BPy_Id.cpp
index 4b1d7c64fc48f694e2eea75b2d9c9d45998fcd95..fd665f5618957f9b4f6b7a977233166baebae6aa 100644
--- a/source/blender/freestyle/intern/python/BPy_Id.cpp
+++ b/source/blender/freestyle/intern/python/BPy_Id.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Id.h b/source/blender/freestyle/intern/python/BPy_Id.h
index e3c211381cadfbbd5b023a54f7ce67f4824d3b23..30e156b879c59074e398755b46d15a40477cc70c 100644
--- a/source/blender/freestyle/intern/python/BPy_Id.h
+++ b/source/blender/freestyle/intern/python/BPy_Id.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_IntegrationType.cpp b/source/blender/freestyle/intern/python/BPy_IntegrationType.cpp
index 92a03a017c5c604f694720865d5897a84372c5e2..fc7581a93c00ab2b8ad15c9115b701b451083d29 100644
--- a/source/blender/freestyle/intern/python/BPy_IntegrationType.cpp
+++ b/source/blender/freestyle/intern/python/BPy_IntegrationType.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_IntegrationType.h b/source/blender/freestyle/intern/python/BPy_IntegrationType.h
index 9176a504b24c60c7b1c91aae7b492262a3555a56..c50893775a20b4a8eb478ec316578b587d51b787 100644
--- a/source/blender/freestyle/intern/python/BPy_IntegrationType.h
+++ b/source/blender/freestyle/intern/python/BPy_IntegrationType.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Interface0D.cpp b/source/blender/freestyle/intern/python/BPy_Interface0D.cpp
index 2f2ba0709323cac959ca1ce8a71752b391deee21..c87e58e954b54c26daf84f1216897b3444392bf3 100644
--- a/source/blender/freestyle/intern/python/BPy_Interface0D.cpp
+++ b/source/blender/freestyle/intern/python/BPy_Interface0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Interface0D.h b/source/blender/freestyle/intern/python/BPy_Interface0D.h
index 75a7e42e316fccd5b80e1d8fc38fd583d10625a7..76c48700f655f55ce89e59f3212c984963d20706 100644
--- a/source/blender/freestyle/intern/python/BPy_Interface0D.h
+++ b/source/blender/freestyle/intern/python/BPy_Interface0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Interface1D.cpp b/source/blender/freestyle/intern/python/BPy_Interface1D.cpp
index 10deca97273e8f4bb64996f254135767c651725c..fbe81d26e795dd03dcfddd78bb5cbd4955b11099 100644
--- a/source/blender/freestyle/intern/python/BPy_Interface1D.cpp
+++ b/source/blender/freestyle/intern/python/BPy_Interface1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Interface1D.h b/source/blender/freestyle/intern/python/BPy_Interface1D.h
index ad6bb5aebeceb79b20755f06f1684cca2595dbe9..c4f287d98ad494d5f054998001ce0cd356fe86d2 100644
--- a/source/blender/freestyle/intern/python/BPy_Interface1D.h
+++ b/source/blender/freestyle/intern/python/BPy_Interface1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Iterator.cpp b/source/blender/freestyle/intern/python/BPy_Iterator.cpp
index 2f69b8c3256e151be1a5ce7133dc810eabc6ef63..35e6dd5536ec9dc5e803008f45954d03e78bc3f4 100644
--- a/source/blender/freestyle/intern/python/BPy_Iterator.cpp
+++ b/source/blender/freestyle/intern/python/BPy_Iterator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Iterator.h b/source/blender/freestyle/intern/python/BPy_Iterator.h
index c7f64c3844edc8b8f6cc594765158e28afb2a25b..1139ee7f156a75ea0682c42d208df2ee75c32455 100644
--- a/source/blender/freestyle/intern/python/BPy_Iterator.h
+++ b/source/blender/freestyle/intern/python/BPy_Iterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_MediumType.cpp b/source/blender/freestyle/intern/python/BPy_MediumType.cpp
index eeb16433bff84dcfe1c187e042ffb47850b531d6..494e01967d64cac17f331ce94c2080ea8508148c 100644
--- a/source/blender/freestyle/intern/python/BPy_MediumType.cpp
+++ b/source/blender/freestyle/intern/python/BPy_MediumType.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_MediumType.h b/source/blender/freestyle/intern/python/BPy_MediumType.h
index e34edc45f420046e48a3d78504c5c83cbb8e818a..3c7e9f02c55ce6d18fb1cde60b1356fd15d152da 100644
--- a/source/blender/freestyle/intern/python/BPy_MediumType.h
+++ b/source/blender/freestyle/intern/python/BPy_MediumType.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Nature.cpp b/source/blender/freestyle/intern/python/BPy_Nature.cpp
index 6fe4789b09bb8cc34b3b0fd708a092e6c2b79b18..33c4ce17820f8d9e4e79650c9a96dd50427c3e40 100644
--- a/source/blender/freestyle/intern/python/BPy_Nature.cpp
+++ b/source/blender/freestyle/intern/python/BPy_Nature.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Nature.h b/source/blender/freestyle/intern/python/BPy_Nature.h
index a105db22b2ad8887b5658681534327be17bac408..5dea1d580654c9535d22c95b8a56fb35fd4aa53a 100644
--- a/source/blender/freestyle/intern/python/BPy_Nature.h
+++ b/source/blender/freestyle/intern/python/BPy_Nature.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Operators.cpp b/source/blender/freestyle/intern/python/BPy_Operators.cpp
index caf11bb5072cfb523b5d4c7df2178fbf7f6e0045..20fd091c2497ff7f9574133abe32a329f10ac14c 100644
--- a/source/blender/freestyle/intern/python/BPy_Operators.cpp
+++ b/source/blender/freestyle/intern/python/BPy_Operators.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_Operators.h b/source/blender/freestyle/intern/python/BPy_Operators.h
index 9ed6bc2305d68e3ba7561cf6227de456d98cafc5..ed15dae9962cea43e9787b73a713adfc487ddcbc 100644
--- a/source/blender/freestyle/intern/python/BPy_Operators.h
+++ b/source/blender/freestyle/intern/python/BPy_Operators.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_SShape.cpp b/source/blender/freestyle/intern/python/BPy_SShape.cpp
index 9ab3e634152bef8acfb81a393f5d6b56f63a7270..fb72ed0ca62526e8c480ccdb77a3b1bf4c313b6b 100644
--- a/source/blender/freestyle/intern/python/BPy_SShape.cpp
+++ b/source/blender/freestyle/intern/python/BPy_SShape.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_SShape.h b/source/blender/freestyle/intern/python/BPy_SShape.h
index 404d0ebc602e619e382362e7081d73e0b3cfc992..31075affc767481c2411adffae531013526feee7 100644
--- a/source/blender/freestyle/intern/python/BPy_SShape.h
+++ b/source/blender/freestyle/intern/python/BPy_SShape.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_StrokeAttribute.cpp b/source/blender/freestyle/intern/python/BPy_StrokeAttribute.cpp
index 54117115b95a0bd4b73dabe1f1faf625ba52079d..7dddf90f2b307e22e06a211218862ca833e983b2 100644
--- a/source/blender/freestyle/intern/python/BPy_StrokeAttribute.cpp
+++ b/source/blender/freestyle/intern/python/BPy_StrokeAttribute.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_StrokeAttribute.h b/source/blender/freestyle/intern/python/BPy_StrokeAttribute.h
index b3280095e1eec1fe0b47d67fa7bd34ddcd05734c..5deeab570bc830c8177df97421c7e007ed37cb1b 100644
--- a/source/blender/freestyle/intern/python/BPy_StrokeAttribute.h
+++ b/source/blender/freestyle/intern/python/BPy_StrokeAttribute.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_StrokeShader.cpp b/source/blender/freestyle/intern/python/BPy_StrokeShader.cpp
index 69795df9552f0159142af12ecbce0aadecbb8d40..2e1e7157b8369b138aa7611ed8237e5db04aeb10 100644
--- a/source/blender/freestyle/intern/python/BPy_StrokeShader.cpp
+++ b/source/blender/freestyle/intern/python/BPy_StrokeShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_StrokeShader.h b/source/blender/freestyle/intern/python/BPy_StrokeShader.h
index 0881c07caf1975f8b530c562a329120111193456..7490b0cd0d85867d4c7b65b1b1fbac6fc07cb7af 100644
--- a/source/blender/freestyle/intern/python/BPy_StrokeShader.h
+++ b/source/blender/freestyle/intern/python/BPy_StrokeShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_UnaryFunction0D.cpp b/source/blender/freestyle/intern/python/BPy_UnaryFunction0D.cpp
index 8b5a51ed3fb907b6dd1d101b2e1be26b6e403d85..20941df20be3f0fb07af15930ccedb7132d1156f 100644
--- a/source/blender/freestyle/intern/python/BPy_UnaryFunction0D.cpp
+++ b/source/blender/freestyle/intern/python/BPy_UnaryFunction0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_UnaryFunction0D.h b/source/blender/freestyle/intern/python/BPy_UnaryFunction0D.h
index 86fd6b39ab8aa37c72b5734cc22fcd957da3b6a2..4135c99c6d92fb8ee2ac6f9ff47762510ba5f72f 100644
--- a/source/blender/freestyle/intern/python/BPy_UnaryFunction0D.h
+++ b/source/blender/freestyle/intern/python/BPy_UnaryFunction0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_UnaryFunction1D.cpp b/source/blender/freestyle/intern/python/BPy_UnaryFunction1D.cpp
index 2464b852f527b25357e23ba0f9b869a8943c26bf..6c2877428a7f1342e6a7e6fbb7175b7db0857077 100644
--- a/source/blender/freestyle/intern/python/BPy_UnaryFunction1D.cpp
+++ b/source/blender/freestyle/intern/python/BPy_UnaryFunction1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_UnaryFunction1D.h b/source/blender/freestyle/intern/python/BPy_UnaryFunction1D.h
index 12159c7988556eb990f2cd52fd3dc8cdf79c809a..256a53da934fa2f23662bf68deca34cdb1437657 100644
--- a/source/blender/freestyle/intern/python/BPy_UnaryFunction1D.h
+++ b/source/blender/freestyle/intern/python/BPy_UnaryFunction1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_UnaryPredicate0D.cpp b/source/blender/freestyle/intern/python/BPy_UnaryPredicate0D.cpp
index e8aaf3d7ef3feae89b386ffd744a9f62b8180f44..fe70658fd1725bf1b7f83e17916e44a691b84177 100644
--- a/source/blender/freestyle/intern/python/BPy_UnaryPredicate0D.cpp
+++ b/source/blender/freestyle/intern/python/BPy_UnaryPredicate0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_UnaryPredicate0D.h b/source/blender/freestyle/intern/python/BPy_UnaryPredicate0D.h
index 027994568b47143529b0995b18a5d7f5e4a5819d..51328561b64c3c822d49de8043b825c710e80af6 100644
--- a/source/blender/freestyle/intern/python/BPy_UnaryPredicate0D.h
+++ b/source/blender/freestyle/intern/python/BPy_UnaryPredicate0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_UnaryPredicate1D.cpp b/source/blender/freestyle/intern/python/BPy_UnaryPredicate1D.cpp
index 82b1a04523e792460e57c667735de19b6d5737a6..a42f8bc6963b487c1bdcc92225be192d5e998950 100644
--- a/source/blender/freestyle/intern/python/BPy_UnaryPredicate1D.cpp
+++ b/source/blender/freestyle/intern/python/BPy_UnaryPredicate1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_UnaryPredicate1D.h b/source/blender/freestyle/intern/python/BPy_UnaryPredicate1D.h
index 0f8b00f7f3c513fcda19c609228d39eef6d9a2cf..9641217347c33a934ddd3f4237e9e67130334244 100644
--- a/source/blender/freestyle/intern/python/BPy_UnaryPredicate1D.h
+++ b/source/blender/freestyle/intern/python/BPy_UnaryPredicate1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_ViewMap.cpp b/source/blender/freestyle/intern/python/BPy_ViewMap.cpp
index cf144b05d0eb64bad0b1cac58885e6b51298dfc3..075e5220e43d6e23f090e2bfc08fb7ac5079c612 100644
--- a/source/blender/freestyle/intern/python/BPy_ViewMap.cpp
+++ b/source/blender/freestyle/intern/python/BPy_ViewMap.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_ViewMap.h b/source/blender/freestyle/intern/python/BPy_ViewMap.h
index ac6079577262b2ab1a536a889f9935c4287a463c..0bd9157f9b122be72b39a234218aeb37cddb11bd 100644
--- a/source/blender/freestyle/intern/python/BPy_ViewMap.h
+++ b/source/blender/freestyle/intern/python/BPy_ViewMap.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_ViewShape.cpp b/source/blender/freestyle/intern/python/BPy_ViewShape.cpp
index 6153dde26bd070a12ba47c4dc82ebb1a9d02ad4d..806739239de988b16ccbeef2fb728a6cb54d570c 100644
--- a/source/blender/freestyle/intern/python/BPy_ViewShape.cpp
+++ b/source/blender/freestyle/intern/python/BPy_ViewShape.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BPy_ViewShape.h b/source/blender/freestyle/intern/python/BPy_ViewShape.h
index 542e6d179a573cbb1c7f7e5bab6bc02f883d29a1..638be870537ac3897c21c789fbbc77b3a303a79c 100644
--- a/source/blender/freestyle/intern/python/BPy_ViewShape.h
+++ b/source/blender/freestyle/intern/python/BPy_ViewShape.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_FalseBP1D.cpp b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_FalseBP1D.cpp
index c66ca1e9f43cc7d547636253d29ed3116540d0e4..a76b40fd847b72f875b59af1f49f569842a8032a 100644
--- a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_FalseBP1D.cpp
+++ b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_FalseBP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_FalseBP1D.h b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_FalseBP1D.h
index 6d741400caa4d473ff8c2aed705cb9952dda8ae0..183f1e9f94377ba7924dd719e847831bf17deef1 100644
--- a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_FalseBP1D.h
+++ b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_FalseBP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_Length2DBP1D.cpp b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_Length2DBP1D.cpp
index 6d52e435d3b741ecc72c53621555ad9e3c4f3cdb..fe68e4ed3b8a706249aff29ecc943fdf4c4340aa 100644
--- a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_Length2DBP1D.cpp
+++ b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_Length2DBP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_Length2DBP1D.h b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_Length2DBP1D.h
index 755da249855acfd5eed0cd7c3356bfa7b94938d3..2759c2b427cfa1f89914a5f70dabc669ee232e40 100644
--- a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_Length2DBP1D.h
+++ b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_Length2DBP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_SameShapeIdBP1D.cpp b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_SameShapeIdBP1D.cpp
index 93ae6a59ee025448f25b50e46ca7706c84e86831..48b112aca6a14bfb20d72986bff5c332dcfd0a8d 100644
--- a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_SameShapeIdBP1D.cpp
+++ b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_SameShapeIdBP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_SameShapeIdBP1D.h b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_SameShapeIdBP1D.h
index 08326706a53f9a537232e07874a4fdea11d0c52a..124435a1f2e8bb25a2b031f0a125d194ef2e6709 100644
--- a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_SameShapeIdBP1D.h
+++ b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_SameShapeIdBP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_TrueBP1D.cpp b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_TrueBP1D.cpp
index 30c3d9f2489ae03f2a569d89d8180eedd7a20d59..5bf588d30d6fe298e63f63afd50c04e7e98b6ed4 100644
--- a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_TrueBP1D.cpp
+++ b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_TrueBP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_TrueBP1D.h b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_TrueBP1D.h
index 76f3487d7dbc355d38139825ba3afdb664c3e52c..85c5db662a514697128606f223296e7d4180d7b3 100644
--- a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_TrueBP1D.h
+++ b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_TrueBP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_ViewMapGradientNormBP1D.cpp b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_ViewMapGradientNormBP1D.cpp
index 7b3b291bb6149e337a923ce17f914fd09c855aa1..2a88efdb3ba26c21a24d8bebe6d3bbbc6405cf65 100644
--- a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_ViewMapGradientNormBP1D.cpp
+++ b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_ViewMapGradientNormBP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_ViewMapGradientNormBP1D.h b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_ViewMapGradientNormBP1D.h
index b9ce88773a8e266dc389b3be53878855e4d3dbf3..006025e404a690d9ed23c096925529ba648ae129 100644
--- a/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_ViewMapGradientNormBP1D.h
+++ b/source/blender/freestyle/intern/python/BinaryPredicate1D/BPy_ViewMapGradientNormBP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Director.cpp b/source/blender/freestyle/intern/python/Director.cpp
index 4dd3f732be9e94a8de542968f06a0067d133b504..752b498a302f54472e0e58371ab313bb8c1d9008 100644
--- a/source/blender/freestyle/intern/python/Director.cpp
+++ b/source/blender/freestyle/intern/python/Director.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Director.h b/source/blender/freestyle/intern/python/Director.h
index 0894911fe14569427885a907dbe9a6701442c927..cc12ddebef213cda53a5dc1e0e3a05e79f2a096e 100644
--- a/source/blender/freestyle/intern/python/Director.h
+++ b/source/blender/freestyle/intern/python/Director.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface0D/BPy_CurvePoint.cpp b/source/blender/freestyle/intern/python/Interface0D/BPy_CurvePoint.cpp
index 945215d3eeae0ab47d371f448b94e3c40115545c..2b6d40e1710a5912add6b18e69fc3f7a9f414c96 100644
--- a/source/blender/freestyle/intern/python/Interface0D/BPy_CurvePoint.cpp
+++ b/source/blender/freestyle/intern/python/Interface0D/BPy_CurvePoint.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface0D/BPy_CurvePoint.h b/source/blender/freestyle/intern/python/Interface0D/BPy_CurvePoint.h
index 0def155d22b94afae9eefa54e72cdea948f88ff2..48e564331626e251d96470fb7a8b5e2cc27f6e9e 100644
--- a/source/blender/freestyle/intern/python/Interface0D/BPy_CurvePoint.h
+++ b/source/blender/freestyle/intern/python/Interface0D/BPy_CurvePoint.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface0D/BPy_SVertex.cpp b/source/blender/freestyle/intern/python/Interface0D/BPy_SVertex.cpp
index 7d2874e5d852e48c273e70e57a11ff18a6c5fb99..ff59e5b1a109f1d508327126297121bd8a686989 100644
--- a/source/blender/freestyle/intern/python/Interface0D/BPy_SVertex.cpp
+++ b/source/blender/freestyle/intern/python/Interface0D/BPy_SVertex.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface0D/BPy_SVertex.h b/source/blender/freestyle/intern/python/Interface0D/BPy_SVertex.h
index d2fa48d17d8213bd2edc641a495f8381038f3b9c..b5d0159ae9486829a2d9ba406bfe8b2294db83c5 100644
--- a/source/blender/freestyle/intern/python/Interface0D/BPy_SVertex.h
+++ b/source/blender/freestyle/intern/python/Interface0D/BPy_SVertex.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface0D/BPy_ViewVertex.cpp b/source/blender/freestyle/intern/python/Interface0D/BPy_ViewVertex.cpp
index cd8314175776086c180fdffa9fee15444a8df93e..4695d61af9c1fee82f29d8e14873473745789a9e 100644
--- a/source/blender/freestyle/intern/python/Interface0D/BPy_ViewVertex.cpp
+++ b/source/blender/freestyle/intern/python/Interface0D/BPy_ViewVertex.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface0D/BPy_ViewVertex.h b/source/blender/freestyle/intern/python/Interface0D/BPy_ViewVertex.h
index b5881dcafb5489d45ccc219c2fdb87fbe0057e71..58f575f297a0b310a5b8368bf42106cbb99ffb91 100644
--- a/source/blender/freestyle/intern/python/Interface0D/BPy_ViewVertex.h
+++ b/source/blender/freestyle/intern/python/Interface0D/BPy_ViewVertex.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface0D/CurvePoint/BPy_StrokeVertex.cpp b/source/blender/freestyle/intern/python/Interface0D/CurvePoint/BPy_StrokeVertex.cpp
index 6104005464cfd40794e3841622c42bd6cc08c5b0..1c1d8bf032a6b288546f07dba92856965339562e 100644
--- a/source/blender/freestyle/intern/python/Interface0D/CurvePoint/BPy_StrokeVertex.cpp
+++ b/source/blender/freestyle/intern/python/Interface0D/CurvePoint/BPy_StrokeVertex.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface0D/CurvePoint/BPy_StrokeVertex.h b/source/blender/freestyle/intern/python/Interface0D/CurvePoint/BPy_StrokeVertex.h
index d635a8541db55c53e71bf1596e82a7a4f86020d0..7305990d7f33e20a99c6edb4b8c09cf97d1c5843 100644
--- a/source/blender/freestyle/intern/python/Interface0D/CurvePoint/BPy_StrokeVertex.h
+++ b/source/blender/freestyle/intern/python/Interface0D/CurvePoint/BPy_StrokeVertex.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_NonTVertex.cpp b/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_NonTVertex.cpp
index f63ad0d618b1a936546e932e881b44d0ed066611..de9748d41c16fde756aa7b056ec78e3cb144784a 100644
--- a/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_NonTVertex.cpp
+++ b/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_NonTVertex.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_NonTVertex.h b/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_NonTVertex.h
index 6d84533aa6b08b25e7076c84206cd368c36219f0..9eaa779229823945b27cba70e5f48a211f5cc97f 100644
--- a/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_NonTVertex.h
+++ b/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_NonTVertex.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_TVertex.cpp b/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_TVertex.cpp
index 0e6d676643690435fe9224e0670caae7db6618b1..8dc76c1c4486c8263fc2ee7f4f82516f084ae9e6 100644
--- a/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_TVertex.cpp
+++ b/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_TVertex.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_TVertex.h b/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_TVertex.h
index 009ba24d1e89d51e11ab0a112bcb69daa6271f76..3fbcb07cf7b2ee3a9087d85339d04b0a09d0eb22 100644
--- a/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_TVertex.h
+++ b/source/blender/freestyle/intern/python/Interface0D/ViewVertex/BPy_TVertex.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/BPy_FEdge.cpp b/source/blender/freestyle/intern/python/Interface1D/BPy_FEdge.cpp
index be5299538158f0c76f41d954c3a67cdbd9090b4d..db4ce6a81628ae518f0d97654ba3e5af12dced51 100644
--- a/source/blender/freestyle/intern/python/Interface1D/BPy_FEdge.cpp
+++ b/source/blender/freestyle/intern/python/Interface1D/BPy_FEdge.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/BPy_FEdge.h b/source/blender/freestyle/intern/python/Interface1D/BPy_FEdge.h
index 3c259d77a44f8642d848e7281efb2ef53c3b3434..c02d13bc2e84428cc071a4130efdb7843c0a9b62 100644
--- a/source/blender/freestyle/intern/python/Interface1D/BPy_FEdge.h
+++ b/source/blender/freestyle/intern/python/Interface1D/BPy_FEdge.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/BPy_FrsCurve.cpp b/source/blender/freestyle/intern/python/Interface1D/BPy_FrsCurve.cpp
index fe25051b924280f5739f2b232ffb96202de992e1..726e9f44956df43834c3dc4dd1b005801291ff51 100644
--- a/source/blender/freestyle/intern/python/Interface1D/BPy_FrsCurve.cpp
+++ b/source/blender/freestyle/intern/python/Interface1D/BPy_FrsCurve.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/BPy_FrsCurve.h b/source/blender/freestyle/intern/python/Interface1D/BPy_FrsCurve.h
index be3e98edefe432e52fb765684726413baa984059..7ed27f93aab314edf3aadd5ea1e512c23070e7c1 100644
--- a/source/blender/freestyle/intern/python/Interface1D/BPy_FrsCurve.h
+++ b/source/blender/freestyle/intern/python/Interface1D/BPy_FrsCurve.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/BPy_Stroke.cpp b/source/blender/freestyle/intern/python/Interface1D/BPy_Stroke.cpp
index 62641499740df96b9ee12034edf07a03982866c1..57c00ab1b993492fb7914428ce941c1f9c0a1d04 100644
--- a/source/blender/freestyle/intern/python/Interface1D/BPy_Stroke.cpp
+++ b/source/blender/freestyle/intern/python/Interface1D/BPy_Stroke.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/BPy_Stroke.h b/source/blender/freestyle/intern/python/Interface1D/BPy_Stroke.h
index eb919b4a376dc88d64ce2d8c0d4e8c52b5d7e163..0b4292338d2c7992654938b2bc578f635fd6df9d 100644
--- a/source/blender/freestyle/intern/python/Interface1D/BPy_Stroke.h
+++ b/source/blender/freestyle/intern/python/Interface1D/BPy_Stroke.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/BPy_ViewEdge.cpp b/source/blender/freestyle/intern/python/Interface1D/BPy_ViewEdge.cpp
index dee587407a7704eaccead8ff47c8b45ad4bdb9b7..5a58a09d34642d23470271f85656865eea767d61 100644
--- a/source/blender/freestyle/intern/python/Interface1D/BPy_ViewEdge.cpp
+++ b/source/blender/freestyle/intern/python/Interface1D/BPy_ViewEdge.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/BPy_ViewEdge.h b/source/blender/freestyle/intern/python/Interface1D/BPy_ViewEdge.h
index ffcdb46cff62658e2032672641f50402d890c3ca..bc66115bd3a083ec4930c76a609339fd8a1deb27 100644
--- a/source/blender/freestyle/intern/python/Interface1D/BPy_ViewEdge.h
+++ b/source/blender/freestyle/intern/python/Interface1D/BPy_ViewEdge.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/Curve/BPy_Chain.cpp b/source/blender/freestyle/intern/python/Interface1D/Curve/BPy_Chain.cpp
index a1cf5c5146b37b1628ff917116501d9d4283e8ee..5f98252844f1a64b292b8fb38fb144fb33953e39 100644
--- a/source/blender/freestyle/intern/python/Interface1D/Curve/BPy_Chain.cpp
+++ b/source/blender/freestyle/intern/python/Interface1D/Curve/BPy_Chain.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/Curve/BPy_Chain.h b/source/blender/freestyle/intern/python/Interface1D/Curve/BPy_Chain.h
index 279a9cdc945f5b29a92525317989934a1b4e60a1..2c026872a5bea187a0cf96d66472bb339a36d057 100644
--- a/source/blender/freestyle/intern/python/Interface1D/Curve/BPy_Chain.h
+++ b/source/blender/freestyle/intern/python/Interface1D/Curve/BPy_Chain.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSharp.cpp b/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSharp.cpp
index 93958b626bff7d1930de29e3faa526a1ca92f4fe..840f49ff3450befb92578bf5a970dc3f9c9c28be 100644
--- a/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSharp.cpp
+++ b/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSharp.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSharp.h b/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSharp.h
index c3d0298bc5c8cf60a308b2144f0f3aae8a7a198e..8d724d5fd3b12e15921cba6b5fb56673f37900e8 100644
--- a/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSharp.h
+++ b/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSharp.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSmooth.cpp b/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSmooth.cpp
index b46513452974d81006738652723adeb31f35f63a..bf62d5bd31d715a9b20ae161edc2c00c635370aa 100644
--- a/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSmooth.cpp
+++ b/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSmooth.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSmooth.h b/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSmooth.h
index d8ddd6c573fdd2ea68db1b81c58c3e9b5a33bfa2..89e8ec1200e8f1941a4bbe6c1686c84e53085f76 100644
--- a/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSmooth.h
+++ b/source/blender/freestyle/intern/python/Interface1D/FEdge/BPy_FEdgeSmooth.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_AdjacencyIterator.cpp b/source/blender/freestyle/intern/python/Iterator/BPy_AdjacencyIterator.cpp
index a7406b080dd7cf1423fe99ccf7313797f16e9e98..80b5cd4ba3b17c0cc6615cf23ee9ccc142136bc0 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_AdjacencyIterator.cpp
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_AdjacencyIterator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_AdjacencyIterator.h b/source/blender/freestyle/intern/python/Iterator/BPy_AdjacencyIterator.h
index 1de73dad0150dca2aad4c5a01847ebac20f5f3bb..f9c613ae35f82176cecd69125ad5d185998188b8 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_AdjacencyIterator.h
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_AdjacencyIterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_ChainPredicateIterator.cpp b/source/blender/freestyle/intern/python/Iterator/BPy_ChainPredicateIterator.cpp
index 7c64420a058e4585219e49b8e17c17a2e5fef890..1960d33ea88ca2207ad905204d9561ef5e602281 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_ChainPredicateIterator.cpp
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_ChainPredicateIterator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_ChainPredicateIterator.h b/source/blender/freestyle/intern/python/Iterator/BPy_ChainPredicateIterator.h
index ae6f7307e3c69ae177eff34211f04fccc14b7f70..a31b0d57b5d669fc093b87b6c83beaee30827056 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_ChainPredicateIterator.h
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_ChainPredicateIterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_ChainSilhouetteIterator.cpp b/source/blender/freestyle/intern/python/Iterator/BPy_ChainSilhouetteIterator.cpp
index 594d4c4fd5e0874ab695ea9638a02108aefd88db..784ee87cc067ea5f64bf8664b14b1a2c0b5e4740 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_ChainSilhouetteIterator.cpp
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_ChainSilhouetteIterator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_ChainSilhouetteIterator.h b/source/blender/freestyle/intern/python/Iterator/BPy_ChainSilhouetteIterator.h
index 7eb5ca8d70c6976ecdfdb64a4f23f3b737fd089f..025bae2ae84f6dfeb861b4106e461a2d5c184bf0 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_ChainSilhouetteIterator.h
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_ChainSilhouetteIterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_ChainingIterator.cpp b/source/blender/freestyle/intern/python/Iterator/BPy_ChainingIterator.cpp
index 907a411788f9f392f1c7c87fae62b9765992f86f..b4b3fd2bf1ff0a44483af0dcfa00bb1422828734 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_ChainingIterator.cpp
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_ChainingIterator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_ChainingIterator.h b/source/blender/freestyle/intern/python/Iterator/BPy_ChainingIterator.h
index 54fd6e08f054113082867f6db194287e4a4c1127..d17fdf0cf49e51c3f74f29648cc50d9c8d25cc19 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_ChainingIterator.h
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_ChainingIterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_CurvePointIterator.cpp b/source/blender/freestyle/intern/python/Iterator/BPy_CurvePointIterator.cpp
index 57172a9006dce1dd80b639a81366839bdcbd565b..e39439dc0b1d1c7477bb8512d7c115c0026798fc 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_CurvePointIterator.cpp
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_CurvePointIterator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_CurvePointIterator.h b/source/blender/freestyle/intern/python/Iterator/BPy_CurvePointIterator.h
index 2de21178e95d6e98ef3edb208254d0619cf2235f..351529b0d6dbe4915bb96af1445336937bb22cd1 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_CurvePointIterator.h
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_CurvePointIterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_Interface0DIterator.cpp b/source/blender/freestyle/intern/python/Iterator/BPy_Interface0DIterator.cpp
index 2201da36b8a5d4ec9261efba1c1671a0b44a4bab..def217bb27819aa7888af4efda218d8b7bd83f9b 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_Interface0DIterator.cpp
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_Interface0DIterator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_Interface0DIterator.h b/source/blender/freestyle/intern/python/Iterator/BPy_Interface0DIterator.h
index 82e442186347045125653f97eed489f15963879b..1a89617d5c7702f5ba3e37d92c88830abcc7b9c2 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_Interface0DIterator.h
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_Interface0DIterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_SVertexIterator.cpp b/source/blender/freestyle/intern/python/Iterator/BPy_SVertexIterator.cpp
index 6666d7424154358e367ced13fdd5842df115ddaa..922f979b4cb09126b791e0ec212111de807429a1 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_SVertexIterator.cpp
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_SVertexIterator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_SVertexIterator.h b/source/blender/freestyle/intern/python/Iterator/BPy_SVertexIterator.h
index c7b18db8e48ef155e46e63a0698867adea5b10f6..c3b0937d2413b70909518bd1ec7c10af08c79702 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_SVertexIterator.h
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_SVertexIterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_StrokeVertexIterator.cpp b/source/blender/freestyle/intern/python/Iterator/BPy_StrokeVertexIterator.cpp
index 2d0ce0d54c6d1f47e51b6b5f505318b93b704edf..2a9efcdded438ecd6474771297f0f499629b62c3 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_StrokeVertexIterator.cpp
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_StrokeVertexIterator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_StrokeVertexIterator.h b/source/blender/freestyle/intern/python/Iterator/BPy_StrokeVertexIterator.h
index d7ad3d99a548a8b031325ea279b79a7f25856cce..4d949e44979b9b7df1b368de9627b75c8697853c 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_StrokeVertexIterator.h
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_StrokeVertexIterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_ViewEdgeIterator.cpp b/source/blender/freestyle/intern/python/Iterator/BPy_ViewEdgeIterator.cpp
index 391ebae4cdddc839d7e518bad7192c682b99800b..634d4d6434ba58aca5ad3c4396467fb26a547eeb 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_ViewEdgeIterator.cpp
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_ViewEdgeIterator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_ViewEdgeIterator.h b/source/blender/freestyle/intern/python/Iterator/BPy_ViewEdgeIterator.h
index 782f20c888445425cf8666a46ee4c52a3cd14b00..331c13f04b45409c70d6579c4c99d59beba950b5 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_ViewEdgeIterator.h
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_ViewEdgeIterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_orientedViewEdgeIterator.cpp b/source/blender/freestyle/intern/python/Iterator/BPy_orientedViewEdgeIterator.cpp
index e33f2c3fd881f62ade8ad6f0d7ca4e7fcb74eb25..504c43a85420fec9eae998e43b955ab546d23621 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_orientedViewEdgeIterator.cpp
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_orientedViewEdgeIterator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/Iterator/BPy_orientedViewEdgeIterator.h b/source/blender/freestyle/intern/python/Iterator/BPy_orientedViewEdgeIterator.h
index c6b1a123324ac405a2b26550eda6e67dd1e804ea..50068a03f5a8b3ebc752e8b3f9e7a920c465be1a 100644
--- a/source/blender/freestyle/intern/python/Iterator/BPy_orientedViewEdgeIterator.h
+++ b/source/blender/freestyle/intern/python/Iterator/BPy_orientedViewEdgeIterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_BackboneStretcherShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_BackboneStretcherShader.cpp
index ff0fed08e0fce47b14e2a5313738ac058be4952d..ce8c62374a64997a070a178c7585d6e8fa98eb75 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_BackboneStretcherShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_BackboneStretcherShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_BackboneStretcherShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_BackboneStretcherShader.h
index bd63b2fb337e367f8150608dc1de4d203299af00..9e356e2eeae62f4c777fac5cf4d478a8c074e603 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_BackboneStretcherShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_BackboneStretcherShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_BezierCurveShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_BezierCurveShader.cpp
index 2a610e375ee0453308043297b3cc6d894bbc812c..3970fdbe51122fe21e45081f4851543cf8047c21 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_BezierCurveShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_BezierCurveShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_BezierCurveShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_BezierCurveShader.h
index a0b80b401ba5dd7bc383961cb975b19c7ce1c1e3..0011c65e97c7a7149376e732aee55acca180b388 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_BezierCurveShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_BezierCurveShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_BlenderTextureShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_BlenderTextureShader.cpp
index fcf415a82fdd678f935acbe939c97f0d0fa69e02..b1d413bb426299bb9fc954830d9c290476bc53ae 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_BlenderTextureShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_BlenderTextureShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_BlenderTextureShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_BlenderTextureShader.h
index 7147a542467529d16d19142a3c325114cdc0adee..7437a6506232183b111b366d8eb8575c8d9a3410 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_BlenderTextureShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_BlenderTextureShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_CalligraphicShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_CalligraphicShader.cpp
index ab9aa2ffa9466e56491ea7b8ba375fcab22a81c6..b357baa394c462b33b55d2442ac2dc48f4f19aeb 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_CalligraphicShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_CalligraphicShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_CalligraphicShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_CalligraphicShader.h
index b64e1b9376e2677e58917d4e56daba82a74f4bdb..8cbaf770bc77b9f7d641a666e19248c54c898f0d 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_CalligraphicShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_CalligraphicShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_ColorNoiseShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_ColorNoiseShader.cpp
index 05a98c20f52833bc3f7c648b27b7e8a22bcccb13..01ed7bc5cf8f0486e03a879941194a7bfd54a97b 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_ColorNoiseShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_ColorNoiseShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_ColorNoiseShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_ColorNoiseShader.h
index ada3165eea9bad0ca5090960c027b652dd8f7da9..1c2a740d35011882f6c851e463438a6d36462327 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_ColorNoiseShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_ColorNoiseShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantColorShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantColorShader.cpp
index 6b19590a169e04b6fb0969db066087da3f9ece7e..e7eff87fb2bc9784d67f9be8f8f5e8a55baca6fb 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantColorShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantColorShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantColorShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantColorShader.h
index 7f58ed53e960f02b8998bbf4214f99b31460028d..29bfe25af8be72c918181cd20884018d1f91f5c2 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantColorShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantColorShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantThicknessShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantThicknessShader.cpp
index 795ec2fb87ed992ec8477b36dd7152c776fec146..e05658e500ff707fe078c217f6483ef1b02d7f66 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantThicknessShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantThicknessShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantThicknessShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantThicknessShader.h
index 9323e2b9143be797597ceab9b4d8cf8ca2accf29..dfcdd0f73b79c146defa79cfde12351f2409477b 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantThicknessShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstantThicknessShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstrainedIncreasingThicknessShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstrainedIncreasingThicknessShader.cpp
index 780f9255b4a6197392615390f753255332291b2c..88ce8099669da9a0f8b6ddeb021454d3c5c13498 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstrainedIncreasingThicknessShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstrainedIncreasingThicknessShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstrainedIncreasingThicknessShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstrainedIncreasingThicknessShader.h
index e3946c4bedb79602e7a5209c1c51a657219032a2..09827b2fb1e70cf2304a3f51eeb32e997193f5f8 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstrainedIncreasingThicknessShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_ConstrainedIncreasingThicknessShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_GuidingLinesShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_GuidingLinesShader.cpp
index 3fc16d9d0ea38ed20f9e5339bab629f68234a223..08c5e70d11a3212a2ff7dc0f306967cd3a1d5b4b 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_GuidingLinesShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_GuidingLinesShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_GuidingLinesShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_GuidingLinesShader.h
index 51fd37978d5748c657bb64b220faaa626d705a4c..6aa4355c0efac9ab795fedd39e045cb8de7f8993 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_GuidingLinesShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_GuidingLinesShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingColorShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingColorShader.cpp
index f6ae0330b4873992c76bfcc84f10d68130273935..33f2eb4154843071cd55275c7a4d9c369314a689 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingColorShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingColorShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingColorShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingColorShader.h
index def647abcce9d14a131b7c0e44ea152601383c96..e30e2c223f10b24dd48958b7fb51305acc6afe0f 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingColorShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingColorShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingThicknessShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingThicknessShader.cpp
index fa60aba34e492ebd8cf31a218325e29ff18648c9..9e489f24c884d29f9bac5d268f15eee03e9ae377 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingThicknessShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingThicknessShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingThicknessShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingThicknessShader.h
index 7ded1c81bebe7d39d29e3e7754302028be8e228d..a6386ae5140261e153172d83476fb13d2888162e 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingThicknessShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_IncreasingThicknessShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_PolygonalizationShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_PolygonalizationShader.cpp
index 2ba492896071460016345064e24e640a57df1d88..25021696694d0d9c35b9adbb91bbfa276bd0c493 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_PolygonalizationShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_PolygonalizationShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_PolygonalizationShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_PolygonalizationShader.h
index c50b388965a7543f547992d36b9e36c9f3431b68..94d9cc94dc8590ae3131a87661f276d754eb064d 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_PolygonalizationShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_PolygonalizationShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_SamplingShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_SamplingShader.cpp
index fc50c9f1e024f006bdc0c1a5394c66d4df0380d4..9bf322cd1f8bb168fe310210861d2207c0e3a11c 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_SamplingShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_SamplingShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_SamplingShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_SamplingShader.h
index 073c5e8df424cf42df5ecfcf30bac2118ba5774a..e07ad5c410ec93395486d55f30e552a14604d0e5 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_SamplingShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_SamplingShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_SmoothingShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_SmoothingShader.cpp
index bcb7af0e5a78044bbff23015fe230becdaefc6c6..1a3cba74f18a211c162677e3f332ab438262b50c 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_SmoothingShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_SmoothingShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_SmoothingShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_SmoothingShader.h
index fcd559b661d8262779a276b7e227a454d1d2b6b4..1821a871b94af411ff6910cf17fe630981e8fe61 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_SmoothingShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_SmoothingShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_SpatialNoiseShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_SpatialNoiseShader.cpp
index dabf7b3b9f409a2f7a1019708f411120d576daab..26f0dcadf8643aa900eb7319aa2d4dbef2d0a2bf 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_SpatialNoiseShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_SpatialNoiseShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_SpatialNoiseShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_SpatialNoiseShader.h
index 59e3e32d6cf77d6063ee5a7066e245dbc458c738..07445b4714bb9f0b2427095f6f9d286b1191873a 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_SpatialNoiseShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_SpatialNoiseShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_StrokeTextureStepShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_StrokeTextureStepShader.cpp
index 7961944af454500a5f42b8d3f624ab68c6f9d40a..a79bee0b1201352484be2d58730be74e0176da5b 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_StrokeTextureStepShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_StrokeTextureStepShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_StrokeTextureStepShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_StrokeTextureStepShader.h
index ef0ebfad88372293ab8408fecf693276649b7fbf..a57645d7e5f6a03c45486fe764915f990f06da51 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_StrokeTextureStepShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_StrokeTextureStepShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_ThicknessNoiseShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_ThicknessNoiseShader.cpp
index 1a52f76e9dca9e81479ffa6670ea1c82f6a69c24..24bcbff1990cc6da3d9761227bea74c1b8aac695 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_ThicknessNoiseShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_ThicknessNoiseShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_ThicknessNoiseShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_ThicknessNoiseShader.h
index e18f60c033b8bfa413965285f353d290f090072f..f4112d23d441950620145a5878bd6f9a7dae86f5 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_ThicknessNoiseShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_ThicknessNoiseShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_TipRemoverShader.cpp b/source/blender/freestyle/intern/python/StrokeShader/BPy_TipRemoverShader.cpp
index 6f0146cb07f4802987a62a8c54c4a7aac2fd9cf7..e36c99713e87913928bc5714f20d04c72535e73f 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_TipRemoverShader.cpp
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_TipRemoverShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/StrokeShader/BPy_TipRemoverShader.h b/source/blender/freestyle/intern/python/StrokeShader/BPy_TipRemoverShader.h
index bc7c2a2f2f4711ec5736089fe72c137a93ccfee9..ce523a631d1f4afa8e6fb6454c1ccb802d177481 100644
--- a/source/blender/freestyle/intern/python/StrokeShader/BPy_TipRemoverShader.h
+++ b/source/blender/freestyle/intern/python/StrokeShader/BPy_TipRemoverShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DDouble.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DDouble.cpp
index 1a3a8a09488143a979f30087c10da09be6b08eae..da4fdfe5095075b371d912f45c407b69d051eab7 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DDouble.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DDouble.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DDouble.h b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DDouble.h
index abfc26095233e1665f11ad135925654a1aaa38a6..5154200109d89d5bedd9508d0b886bfb2f545d20 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DDouble.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DDouble.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DEdgeNature.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DEdgeNature.cpp
index 6d203b81aecb5898cc2373fe1991d4d7564c848e..d6c095c9f0a76a88cd4e6e9798ef5f12bf647521 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DEdgeNature.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DEdgeNature.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DEdgeNature.h b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DEdgeNature.h
index 83abc0033932ea46a5abfff39acf8d92864ec3cd..30b1493b0af1474a6f6fe41a7d63e23f5c7da48f 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DEdgeNature.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DEdgeNature.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DFloat.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DFloat.cpp
index 81363f7815115140c7327f84156a8fc9b5ae1378..20511cb0d4bfb84425320eb3e31358fcebb1fe61 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DFloat.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DFloat.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DFloat.h b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DFloat.h
index a4c401f3dcd501d190fa086276a55c9c459fc296..9c4248a7617da938cb8501d00574b318201c4e07 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DFloat.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DFloat.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DId.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DId.cpp
index 98b21230dfe68320589841ebdd3890b36bee1a0e..61a7693d6052cb906289fe73355ae09505526849 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DId.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DId.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DId.h b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DId.h
index b13c976f0ac9c819ff34b502d21b965a1d17664a..c663643b98a9159e8742e10389cf9d2ae3daac45 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DId.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DId.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DMaterial.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DMaterial.cpp
index db606ee089dca7f670cf3d8eccd86b6585a91652..224f1ad722906d0ef1ff71ecc5ad2d0508560b83 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DMaterial.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DMaterial.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DMaterial.h b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DMaterial.h
index 72054713a66c99aba318cbd81305dca92c85244a..a1dd3650db66ab4c5f0c89adf31ca836b37f7f1b 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DMaterial.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DMaterial.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DUnsigned.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DUnsigned.cpp
index dc0a92488ae78310d810f5019a55e8c7fc669251..be1b9f42ce478d892a342f8860e8bb8cb6376399 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DUnsigned.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DUnsigned.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DUnsigned.h b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DUnsigned.h
index 2958d10994c6fa73609f33905421227ecbee0e85..54a8502aee80e4d6c8eea7e5ade8b4bc9a383d34 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DUnsigned.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DUnsigned.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec2f.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec2f.cpp
index 6c5334a1cc2f44aa11b61940e8116a6e00006d23..c13dbc85eeeebb86775d5c993601eda63ce2ee05 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec2f.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec2f.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec2f.h b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec2f.h
index 2e570adbaeeb27987d40c2b68947c460fdcd913d..e2ea9f988db1b458e5d021519a5254f0073445b7 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec2f.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec2f.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec3f.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec3f.cpp
index 67be2f8e09aab43ac4567f36f5916ce3629dadc9..d373ae7fe033c3251a7f5bef35c31e7327139117 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec3f.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec3f.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec3f.h b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec3f.h
index 6334988a0ef54eb1b6502970039628ce21148f0d..287c413f6ff0bb75c466e09cb02a921444e4558c 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec3f.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVec3f.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVectorViewShape.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVectorViewShape.cpp
index 1f3986fd4e028ad9c5c2a62cd9f518f9fab471fd..6d17f6debdf4fac3d5ad47c2c3c062bc1d3a2be6 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVectorViewShape.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVectorViewShape.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVectorViewShape.h b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVectorViewShape.h
index 4e49374273f0e6f192b7bed2b7269b45c2eecf11..b1e41403a28800446e3c36db88a33b2955a2c4a9 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVectorViewShape.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DVectorViewShape.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DViewShape.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DViewShape.cpp
index 9f2caedde787db0e0044321b934050faa088c9d4..06a08cc02f5f0925596c51e424cc533d8f29e721 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DViewShape.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DViewShape.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DViewShape.h b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DViewShape.h
index 7a3c27a30c13091153f27bb5a93d170a35ebb6ff..f01c71da3afd20b8ff4a0a2c837b4c99e782772e 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DViewShape.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/BPy_UnaryFunction0DViewShape.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Id/BPy_ShapeIdF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Id/BPy_ShapeIdF0D.cpp
index a15cbe08385e3d836eaa9020498713e0360ab675..deea700800255ab192c21c465325306ee626beb7 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Id/BPy_ShapeIdF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Id/BPy_ShapeIdF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Id/BPy_ShapeIdF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Id/BPy_ShapeIdF0D.h
index ce4b448df036639f81483791ecb7ad44173e8557..33d13aba1bc31412abfc5b431250c64689e20cfd 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Id/BPy_ShapeIdF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Id/BPy_ShapeIdF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Material/BPy_MaterialF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Material/BPy_MaterialF0D.cpp
index d9ba37ff306f1f5184f089de0435b1142e458577..49273ddf132292c27cfbe079b77da43a210ce334 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Material/BPy_MaterialF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Material/BPy_MaterialF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Material/BPy_MaterialF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Material/BPy_MaterialF0D.h
index b569b9e1e81912670a41379ed219de490b6c7553..03f3f73e5f5a7f4228224e5ef09d76c61d83084d 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Material/BPy_MaterialF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Material/BPy_MaterialF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Nature_EdgeNature/BPy_CurveNatureF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Nature_EdgeNature/BPy_CurveNatureF0D.cpp
index df05ce055de872c3780d8ee1c130c7e27c1d0127..66a93f961e73e93a6124beefcdeaeb7a08b91659 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Nature_EdgeNature/BPy_CurveNatureF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Nature_EdgeNature/BPy_CurveNatureF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Nature_EdgeNature/BPy_CurveNatureF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Nature_EdgeNature/BPy_CurveNatureF0D.h
index 5e29845c6b949e2343beededcab399cdb35d2f21..94ea0f6dc066a9c28eeb91a6a5504e29feeb9bc9 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Nature_EdgeNature/BPy_CurveNatureF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Nature_EdgeNature/BPy_CurveNatureF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_Normal2DF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_Normal2DF0D.cpp
index 0f32a7f6dda63e8602dc121da9d52ebdb8c12df1..0b5c818de9d84b4a9cbd9b657bacdd61065e63a1 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_Normal2DF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_Normal2DF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_Normal2DF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_Normal2DF0D.h
index c9b10412f3461d94b03b7548a5600c7c575a1460..0cdb3b93d5ead77d50379dbc5466f10d66b70f83 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_Normal2DF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_Normal2DF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_VertexOrientation2DF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_VertexOrientation2DF0D.cpp
index fe3890a0546f3040204546cd6bb782e93752d699..7792cbb249581100542af02ce0ad10f0438450bf 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_VertexOrientation2DF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_VertexOrientation2DF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_VertexOrientation2DF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_VertexOrientation2DF0D.h
index 036bc82b52a3ae36c652e12b7887ef5020605588..60fd2c8e5db2e1c8885dfdbb614c923afb732c71 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_VertexOrientation2DF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec2f/BPy_VertexOrientation2DF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec3f/BPy_VertexOrientation3DF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec3f/BPy_VertexOrientation3DF0D.cpp
index 0e2f9d38e2b249c377e6c371914d5337d9709008..9a0aa3ae4a877759f7937d3965a5772a6db3e7ec 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec3f/BPy_VertexOrientation3DF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec3f/BPy_VertexOrientation3DF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec3f/BPy_VertexOrientation3DF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec3f/BPy_VertexOrientation3DF0D.h
index c99c344d470f2cd59aa6591f496756cfb960b2dd..4a428ceba67e90e6fd36920d03c2841840af4728 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec3f/BPy_VertexOrientation3DF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_Vec3f/BPy_VertexOrientation3DF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetOccludeeF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetOccludeeF0D.cpp
index 3629ac5070833e67b118f2c72877b17ebd3abd4b..7a7e13dbb90819813726f2990fd373feded0c623 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetOccludeeF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetOccludeeF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetOccludeeF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetOccludeeF0D.h
index 20ca0499a1efe5a44499cd4b93db473e7829f4ed..1a00aab45e0e03b2156cb647be99780ab14e5e08 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetOccludeeF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetOccludeeF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetShapeF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetShapeF0D.cpp
index c1f34befc8bf211f8493454d06b89b6b18427651..6b9c2355c6cdb899b471241a4dfea302fdc1ecfd 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetShapeF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetShapeF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetShapeF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetShapeF0D.h
index 4e6dd6b9f608091d690019030144010a8acd5daf..44e866f35f7abcf7b5205b0985055d7ddee45dfd 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetShapeF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_ViewShape/BPy_GetShapeF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_Curvature2DAngleF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_Curvature2DAngleF0D.cpp
index 92702c194a761de0e98492e20447976981380952..a596e13c465e4a06f9b8f43ccff913150985db59 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_Curvature2DAngleF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_Curvature2DAngleF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_Curvature2DAngleF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_Curvature2DAngleF0D.h
index 6fcafef8143223588ecdd4c5b9f592cb25a86547..576c2b1a2488732fd5ad21caa06e6867c412374b 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_Curvature2DAngleF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_Curvature2DAngleF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_DensityF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_DensityF0D.cpp
index 08b17ff3194028b19d787c1f5c120ac58e649e57..25385d05b7b1f8a5df043fd43998ec0a9760f529 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_DensityF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_DensityF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_DensityF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_DensityF0D.h
index 8df2f67aff31c7818b0655ad227a25ad8acb7459..b4ff9c5589cad05ff01faba97d4935d942b203e0 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_DensityF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_DensityF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedXF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedXF0D.cpp
index 2b2b1c616f0fcfa3823010eeb740f4f852abe7f2..c3be379e32dbd41cc26e66524b0fa5acc03fa046 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedXF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedXF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedXF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedXF0D.h
index cf5adf216fc2c6666434efe993001e94a3332224..038a962c606554e9abd676518f44d4d613e3cc7f 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedXF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedXF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedYF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedYF0D.cpp
index 1dc6b43a794cfdb3292db95dc3eadfdaddcf471f..b6ce4bc9bcdeb05cbb042ad848dfa500e12ac8ee 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedYF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedYF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedYF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedYF0D.h
index 6293f9daa2422471b64a4b317140bdbb2c9de7a9..7a0e91cf755555cc20276b290d364fef69977196 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedYF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedYF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedZF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedZF0D.cpp
index a3f7d60fc041008e0d2da78f5fec847b4e5fac17..4bba4e2366546795565934bb44380a3f7a446dd3 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedZF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedZF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedZF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedZF0D.h
index edae33e4c859596e0da5aeb852fe17573a3dbcf9..ae49c3ba009d769304f61b963500dee534991726 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedZF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetProjectedZF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetXF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetXF0D.cpp
index 8c53c1a412edab0029bf61e08563414df40c4c55..3ed3cf7f7f3576eb9d46c8251483b70862753726 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetXF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetXF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetXF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetXF0D.h
index e0427fb1ccdc18694be29e6fc70f04cea521f90d..a75afb42f96ebdd9df94bcc480c3124b6a952560 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetXF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetXF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetYF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetYF0D.cpp
index 7db4d5ed8b294b4186e85bb3c19eb80faaa7cc5f..fd8238e4726efa4f2b4116d12b4287639f3e4f1b 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetYF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetYF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetYF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetYF0D.h
index 3f4f3c85dc7dc98ee36a97e1756c5032e5a88da7..ebc4b3216a19205cffa90931221d571e39a6a033 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetYF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetYF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetZF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetZF0D.cpp
index 4e7808af2c2fa8a4bde5a9943c71e5de7aa948df..8c44c9bf7dcda85125e2fb4c0113148e9c4c1a18 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetZF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetZF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetZF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetZF0D.h
index 54a451e81f4ac80a73672fbccebdb17e2293fbff..d62dac23d549273012056cf86c9d058561b789b9 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetZF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_GetZF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_LocalAverageDepthF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_LocalAverageDepthF0D.cpp
index fa70590f775c26a08ae7093194774f5d76d7cb9c..0dc9f9b4b212056b097bffcc546ec9857dd6fad0 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_LocalAverageDepthF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_LocalAverageDepthF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_LocalAverageDepthF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_LocalAverageDepthF0D.h
index 85626895d2049ed8538bc357a2f9cfc1b8b7f4be..ed3f34fdc3ea867c1c3a0ced93e2ac7b92d4b1d2 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_LocalAverageDepthF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_LocalAverageDepthF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_ZDiscontinuityF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_ZDiscontinuityF0D.cpp
index 21874ff6516b9d7ca42e4a16d1b5b855c72f8610..395da54356d13b0fb3e05be895aad8953f9a0f70 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_ZDiscontinuityF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_ZDiscontinuityF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_ZDiscontinuityF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_ZDiscontinuityF0D.h
index fe2f333da37152772e57a07884247c431daaf70b..9c97ce7cf6f52fb6fc1edcb9d0033e16452a1ca9 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_ZDiscontinuityF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_double/BPy_ZDiscontinuityF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetCurvilinearAbscissaF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetCurvilinearAbscissaF0D.cpp
index 7d68928461eb5f2640fa50b29e84307f36a7fbcc..fffea12e0daeea22570ba9a75bac4f2cad099031 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetCurvilinearAbscissaF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetCurvilinearAbscissaF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetCurvilinearAbscissaF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetCurvilinearAbscissaF0D.h
index 8fffe3fd51dea8066f4db676e186f3673872ed3a..a0e1ec15fa4132e07db65d8cf6a93daf812a11cf 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetCurvilinearAbscissaF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetCurvilinearAbscissaF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetParameterF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetParameterF0D.cpp
index 43eb89e25830a0afd0176305681a6b9e1ceab2a2..4354d651f2707e9650fd317cffcb8bd3083beccc 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetParameterF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetParameterF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetParameterF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetParameterF0D.h
index 3346b519e6023166f6212dc94f80b3d6db858257..b082cf1773def287e32980fceacd6845ef4d364c 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetParameterF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetParameterF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetViewMapGradientNormF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetViewMapGradientNormF0D.cpp
index 8d89d33c230ad060afb6bce93aa503131a5aa1a9..671844fb6b3deb76f602ae0784fda6b10eccdc81 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetViewMapGradientNormF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetViewMapGradientNormF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetViewMapGradientNormF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetViewMapGradientNormF0D.h
index de4930912f4c97fdf38fb3529393ee27c30e9a01..10bc5cbf0d7a9a4352418cb5f3262e3a07fbb397 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetViewMapGradientNormF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_GetViewMapGradientNormF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadCompleteViewMapPixelF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadCompleteViewMapPixelF0D.cpp
index 4ddfc3f386be271acae0a208e9d7cf869ad9b017..ed1902cbd8b45a62b65de988e441e902b3321b26 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadCompleteViewMapPixelF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadCompleteViewMapPixelF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadCompleteViewMapPixelF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadCompleteViewMapPixelF0D.h
index ceee015177165e3f1ca55b1f043658d06e9d6f45..c40bd353d7a1238be3cf9549b52c6b72196a3623 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadCompleteViewMapPixelF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadCompleteViewMapPixelF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadMapPixelF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadMapPixelF0D.cpp
index 383970d110fee04d7bc8b1545e885410f52eebfe..cd60d99593af26753edcb942691aab71533ab0ee 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadMapPixelF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadMapPixelF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadMapPixelF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadMapPixelF0D.h
index 54c9ac984f994f7d52db10cfa5448267d4af3be2..08ee4327131d8c026bbdc8d2aec4ac48675206bf 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadMapPixelF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadMapPixelF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadSteerableViewMapPixelF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadSteerableViewMapPixelF0D.cpp
index 9fa3666df01487604c252646119bdf4bcff0b21b..f0435ea12941c0447410d82b0debb2512ff987c6 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadSteerableViewMapPixelF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadSteerableViewMapPixelF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadSteerableViewMapPixelF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadSteerableViewMapPixelF0D.h
index f1fa1f1b7a23c92b2c6ed59ef04cbf2fa35a5997..56aa9ccf809416ee03d89ef7339944a3d683ff6e 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadSteerableViewMapPixelF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_float/BPy_ReadSteerableViewMapPixelF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_unsigned_int/BPy_QuantitativeInvisibilityF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_unsigned_int/BPy_QuantitativeInvisibilityF0D.cpp
index 1ed7311904e5944b098f8b1b5d61722a88340af9..2c4300a805977f7586fa9c5d46156610ceab237e 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_unsigned_int/BPy_QuantitativeInvisibilityF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_unsigned_int/BPy_QuantitativeInvisibilityF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_unsigned_int/BPy_QuantitativeInvisibilityF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_unsigned_int/BPy_QuantitativeInvisibilityF0D.h
index 510cc7ef146d6e9840b8308fff57eb7b56a47f46..523902878ffb332aaca661e446fda3d6480a6277 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_unsigned_int/BPy_QuantitativeInvisibilityF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_unsigned_int/BPy_QuantitativeInvisibilityF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_vector_ViewShape/BPy_GetOccludersF0D.cpp b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_vector_ViewShape/BPy_GetOccludersF0D.cpp
index be68df3e276b955e3a40f6b5a5c3a58ef892e8c7..797708daa9b8e63e50b8c1c781a547b3e426632f 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_vector_ViewShape/BPy_GetOccludersF0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_vector_ViewShape/BPy_GetOccludersF0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_vector_ViewShape/BPy_GetOccludersF0D.h b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_vector_ViewShape/BPy_GetOccludersF0D.h
index 9e932ff9effaaae62c91feb9d94cbdf2bbdd5b4f..f157a3fb432ac79a58b4594ad0e08c2a906d0f8f 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_vector_ViewShape/BPy_GetOccludersF0D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction0D/UnaryFunction0D_vector_ViewShape/BPy_GetOccludersF0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DDouble.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DDouble.cpp
index b14a208624fcbffb057d50b809735cc2a76076c9..4e4e4d31385a071ced4bf45c1eef5e091b6bd034 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DDouble.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DDouble.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DDouble.h b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DDouble.h
index a57e42ce528ed3a91a47cc370dd4197aa511a49c..cc124acb8385deff9348c654d7a1607b4d72d83f 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DDouble.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DDouble.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DEdgeNature.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DEdgeNature.cpp
index 6ef5b79c1213e7218e85e257a08d701779ada67f..ce654de8bc0f4aafebb83d2547b7ceccca91f0aa 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DEdgeNature.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DEdgeNature.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DEdgeNature.h b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DEdgeNature.h
index 4227cc47efa1fd41e0d69e6f638345d3e00d017e..c4b86d1a6587b758f9a65baacc8edd167ba2da70 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DEdgeNature.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DEdgeNature.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DFloat.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DFloat.cpp
index 461eff54d2d5eb0241ca11b8e4ea16760b823cf2..83958dbb3d70eb930e665dd3fbec2927b2dfbf6e 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DFloat.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DFloat.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DFloat.h b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DFloat.h
index 8be928eba77b3f74f09e1989b64a9490887d1f2b..e0479c36c0ead31b7268214110daab270e14cd91 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DFloat.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DFloat.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DUnsigned.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DUnsigned.cpp
index 5a84bfbc776e1aee591b96e18070d50824cae070..e9023d90b42919855c9add174bf62b2b9ebbf037 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DUnsigned.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DUnsigned.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DUnsigned.h b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DUnsigned.h
index 30fe050c2ad37eff9b9a00a99607067ad8b867e5..be795c6db611ccaa5a594e2f790e1e3b3a397a99 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DUnsigned.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DUnsigned.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec2f.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec2f.cpp
index e175a3bf2a7356a615132012bf00496b46d57007..c7bd84b0d1839103ed6242a16c224872d8cd2438 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec2f.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec2f.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec2f.h b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec2f.h
index 2decb723a3384e4d68f7ad6d29f87baec447e920..e88fa179fb2893fff04c3e00533c0fbdfad4fa98 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec2f.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec2f.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec3f.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec3f.cpp
index 822ac477420c33c1247b2a86535a5ae16219da6a..1eced4cd9f17f6078ae09276761b4a8cbd1243eb 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec3f.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec3f.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec3f.h b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec3f.h
index 9e7a899a371e0313b70667bff6e912e3e9603207..348689a4e70881b682d78a23657f939acdeb8b67 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec3f.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVec3f.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVectorViewShape.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVectorViewShape.cpp
index 13ce8e6fecfcd1c35d646de4dec222d2609cd101..df504b1cdaa6aa7bd596568c1fde133d1bade4ae 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVectorViewShape.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVectorViewShape.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVectorViewShape.h b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVectorViewShape.h
index a8dfee7f9aa88d3b090bd7d2f66181d0bdcbf543..26b09e560016baeb91b6af1f3e1e39ee95876248 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVectorViewShape.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVectorViewShape.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVoid.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVoid.cpp
index 05d21fc44c90df8e6155655c78ddf4017f116f18..84152b8141f5f4f97b192344d717b798e5612c1f 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVoid.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVoid.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVoid.h b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVoid.h
index 520ccc29c999f0861734bcb1819edf57848f4eea..1cbbcf17190bbe37f8f89d4a801a65942349d858 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVoid.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/BPy_UnaryFunction1DVoid.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Nature_EdgeNature/BPy_CurveNatureF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Nature_EdgeNature/BPy_CurveNatureF1D.cpp
index c2d1370301de1ba19cab0c65bf9eee9c69809dc8..ca51824acf047a0a8d98c9e07f78f56824a0ab9f 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Nature_EdgeNature/BPy_CurveNatureF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Nature_EdgeNature/BPy_CurveNatureF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Nature_EdgeNature/BPy_CurveNatureF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Nature_EdgeNature/BPy_CurveNatureF1D.h
index 961c9729e6c115d77a2a234d5d05106ebf8cce65..45268a031a464cb0b5cd10ce04de06a4a28dc1bf 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Nature_EdgeNature/BPy_CurveNatureF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Nature_EdgeNature/BPy_CurveNatureF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Normal2DF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Normal2DF1D.cpp
index 6e8b8b3f54de167b0003faea6e21234b16e24dc7..3da7d8fa0a23597a7cf345870478548536f51b33 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Normal2DF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Normal2DF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Normal2DF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Normal2DF1D.h
index 080f26aa753e918d8b3248238f8f5a7adc882e3f..038586b8a9e597893614a4f5ca426247b9a8b304 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Normal2DF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Normal2DF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Orientation2DF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Orientation2DF1D.cpp
index 3fa631885423c57a6a44168e31eb069b2791ab55..64613c1aa09040768e68d3f6f60c9cfed4487802 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Orientation2DF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Orientation2DF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Orientation2DF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Orientation2DF1D.h
index 013423003c6560f1ec17dcf7a789f627c3f3a67d..9ddcf7af9183b19de0a24ab42ae9f2d0c7470403 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Orientation2DF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec2f/BPy_Orientation2DF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec3f/BPy_Orientation3DF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec3f/BPy_Orientation3DF1D.cpp
index af431a9b905541673137b720042ccd29e9475ed3..f840bf928bfe5795b8d914e787dfcbaa65eaf3ba 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec3f/BPy_Orientation3DF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec3f/BPy_Orientation3DF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec3f/BPy_Orientation3DF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec3f/BPy_Orientation3DF1D.h
index 2e79559bf4345c734e1f622a2bb7b9f2fe255cd2..3f09e18768d7f4135d36fc198b3a0aea0f6dee1b 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec3f/BPy_Orientation3DF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_Vec3f/BPy_Orientation3DF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_Curvature2DAngleF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_Curvature2DAngleF1D.cpp
index b9028509c40fed330e1172f42af27a9eda222d94..704fdc14d5ba9516488b6ca7360ca8bb25f40617 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_Curvature2DAngleF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_Curvature2DAngleF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_Curvature2DAngleF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_Curvature2DAngleF1D.h
index 241c864fdad9eedfab08e8cfe933d70793a7aba2..13f62a34e0ffd2a69d42add315044b6a557fcd23 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_Curvature2DAngleF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_Curvature2DAngleF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_DensityF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_DensityF1D.cpp
index a0df70e0324c53fed8248823375bbc014c67e54f..cfc75a6a60c5e5292f73c5805b569563e4df3cc6 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_DensityF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_DensityF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_DensityF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_DensityF1D.h
index 1b1040d66c418ca59be10f3c1f063708d2924b41..e030b0fb78d821fcabffd1b2982e51aa7280016a 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_DensityF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_DensityF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetCompleteViewMapDensityF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetCompleteViewMapDensityF1D.cpp
index d52714c77c6dc4e01e22c903865b8260155b5d13..d5e6e51fb7f0635cb6f96594417473d806186f14 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetCompleteViewMapDensityF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetCompleteViewMapDensityF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetCompleteViewMapDensityF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetCompleteViewMapDensityF1D.h
index 1bbb4d46fc56d4ae9ddca8770871e0e8ba2f7ab2..a6c5476d31f8a2a1f0db838823b61c7414c797e6 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetCompleteViewMapDensityF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetCompleteViewMapDensityF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetDirectionalViewMapDensityF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetDirectionalViewMapDensityF1D.cpp
index eeb55878f67ec908c225334806594ba3bb77d1f9..c4d4aedc954fe83f5b3c963e539c44e00c71772f 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetDirectionalViewMapDensityF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetDirectionalViewMapDensityF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetDirectionalViewMapDensityF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetDirectionalViewMapDensityF1D.h
index 8e55fc7cc50cb0e45bb9603585d0684f90942486..33f5e1cfcc911889599a34ad7d90db70a8a2b8aa 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetDirectionalViewMapDensityF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetDirectionalViewMapDensityF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedXF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedXF1D.cpp
index 062da8a38168af4112b88cc12587ce0fb49141af..2a1749f69dcdb3052aa3270eea65b9713bfc9a43 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedXF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedXF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedXF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedXF1D.h
index 66bd3983e45d67d3f678f905ba88f6169f1b7034..18f1253dc8db51abd977ac48227f5bbacd1a41ad 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedXF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedXF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedYF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedYF1D.cpp
index 5bda5c275c176bed556e8969522e85823db94930..9960702ccdbdeea240cd38caabf5be6099b236be 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedYF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedYF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedYF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedYF1D.h
index b1a1e90f83f203e6d76ae65f16c245d2caa54546..eade39a30644940d8e81173c524e6ecae86a8f81 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedYF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedYF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedZF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedZF1D.cpp
index 9b9d81168f43adc82d80d3630aa175969c759222..d5b02bb76660c8d41d2dd257ef35f03cd02aaa53 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedZF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedZF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedZF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedZF1D.h
index 73b01bbf9997d591e6db4ec62a7c85f31ee889fe..873f981f33a0ab17527db2e6eedc8c4850bc3f6b 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedZF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetProjectedZF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetSteerableViewMapDensityF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetSteerableViewMapDensityF1D.cpp
index 29251df924f5c79996e41d3e98ceb0f28a04cd95..6a133751d8a9e9c07c630235c105403d8b4ed110 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetSteerableViewMapDensityF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetSteerableViewMapDensityF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetSteerableViewMapDensityF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetSteerableViewMapDensityF1D.h
index 81167d363528dce04eb1b9fad69eb398dc065d1f..362722ea94e413effc32011e94a77adebad9ca0a 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetSteerableViewMapDensityF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetSteerableViewMapDensityF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetViewMapGradientNormF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetViewMapGradientNormF1D.cpp
index c3b2b23fe288115dd2d89a922467029a87a4c9b6..0ce50a9d29c936085c2624a9e17a9f145c7d349b 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetViewMapGradientNormF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetViewMapGradientNormF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetViewMapGradientNormF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetViewMapGradientNormF1D.h
index 0e4a67cf4df0f93d77c50cc7b0692497618984ae..9e540e54a11b55e6b37fa81f886f5b44fc3d2dc6 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetViewMapGradientNormF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetViewMapGradientNormF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetXF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetXF1D.cpp
index 2260dc9ea85849ad96012c015c79b6662c624b42..b9213b7af8200ec9bb6124e34ef1b67c3889cd5a 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetXF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetXF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetXF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetXF1D.h
index 30218ccd5e5bade86e60a7bdca7c5361c0dc4fd1..e894b23a4f3fb2380d900a429a5bda267c149073 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetXF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetXF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetYF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetYF1D.cpp
index 7c19c3101efe766f3c44590a60a7d41338afd367..2e1a713979617aca215e7942960878daed2d07be 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetYF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetYF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetYF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetYF1D.h
index 16afac368c19d90f4ecf9c501074eda686d775a5..6f22a9b4bfeec868cdd1257c7f18968277f60ab4 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetYF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetYF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetZF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetZF1D.cpp
index 43a6632c01782ff377f7664f85090871a9b832d5..a7d468f4afd599f52a5d4387f361c23aa9bd1d88 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetZF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetZF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetZF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetZF1D.h
index a204f3d6665d9062ff2d2b7a3ce9bb35ae5e84c6..3fbc6c96e8e90397c1ca1998cac4305eca959a53 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetZF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_GetZF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_LocalAverageDepthF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_LocalAverageDepthF1D.cpp
index 15a2e7b7643a6f122536be137c87c06e12852684..6ae5500b15f84361288394e1bcaf4d760a055347 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_LocalAverageDepthF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_LocalAverageDepthF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_LocalAverageDepthF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_LocalAverageDepthF1D.h
index d472489fb0cb690bdb450baa02d6cde4e47e9e22..60a9cf83338ae6fb49f019f606212e79ed33f119 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_LocalAverageDepthF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_LocalAverageDepthF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_ZDiscontinuityF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_ZDiscontinuityF1D.cpp
index ed7a3212f59c7e27729c18f1ce37d1d37669e4cc..ed510c25aba3bde179ca5b46ddbb10b084eae04b 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_ZDiscontinuityF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_ZDiscontinuityF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_ZDiscontinuityF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_ZDiscontinuityF1D.h
index c1966472377950393fa4141f2d2b71dad66e2246..2bb632f54b92cff1466f6ffcda18aa02449878bf 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_ZDiscontinuityF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_double/BPy_ZDiscontinuityF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_unsigned_int/BPy_QuantitativeInvisibilityF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_unsigned_int/BPy_QuantitativeInvisibilityF1D.cpp
index 34c3fa1445347931874be88b1435283a89674a52..7dc3daa2911da58599f2b5e69d7659a51ab18e19 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_unsigned_int/BPy_QuantitativeInvisibilityF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_unsigned_int/BPy_QuantitativeInvisibilityF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_unsigned_int/BPy_QuantitativeInvisibilityF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_unsigned_int/BPy_QuantitativeInvisibilityF1D.h
index c76e5f821f280b8c775b45969c2e56a35ac71e41..276bedfc296762429d0a669e984fbbd9d5c4e146 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_unsigned_int/BPy_QuantitativeInvisibilityF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_unsigned_int/BPy_QuantitativeInvisibilityF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludeeF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludeeF1D.cpp
index 74e0b6ea22836415ca7b72a0ffda7264d8095703..c765e521eb52e68100d83ebe057efa73013897b6 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludeeF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludeeF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludeeF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludeeF1D.h
index 2e414446e4749d9da99c64a66d3075c1a433ec45..fad37250f07e6913b19ede1947de412881a7bbe0 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludeeF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludeeF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludersF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludersF1D.cpp
index e32bc4b8f5783e3a3dc538ac606b6713fac85c5d..02284d145f067164e65bb6a5f935038a552bf300 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludersF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludersF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludersF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludersF1D.h
index 52c78bd7f4c50e44e1b0f9ac6904950b36ba5a02..2bd48fb61ce985e4ba38f9e31cc317d3ede1544f 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludersF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetOccludersF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetShapeF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetShapeF1D.cpp
index 4a84d70c0017e0b2845579feee2448c9f26c9bcc..039b7631711bc4e5515e437f1e66326a6f8533d6 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetShapeF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetShapeF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetShapeF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetShapeF1D.h
index 9c025e3b40451bfbd519576ee85d975b1ec0bf58..382da0ce6049da4b0b5b3d2f140484076279bb18 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetShapeF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_vector_ViewShape/BPy_GetShapeF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_ChainingTimeStampF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_ChainingTimeStampF1D.cpp
index 70411d61cb7523220cda22ab45a3b6f4236969f5..0f752a56b4309ece571a82055321327ffc886690 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_ChainingTimeStampF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_ChainingTimeStampF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_ChainingTimeStampF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_ChainingTimeStampF1D.h
index 0a8650d6794213de537e1795a56c77e8d2e21e2b..645193c358ce875074027a1b222216e819c81bc2 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_ChainingTimeStampF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_ChainingTimeStampF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_IncrementChainingTimeStampF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_IncrementChainingTimeStampF1D.cpp
index 8e6848702253f31146a5315096167a39276fea9b..5477e3e246bd5720ef5a16c8a64dda018515effa 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_IncrementChainingTimeStampF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_IncrementChainingTimeStampF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_IncrementChainingTimeStampF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_IncrementChainingTimeStampF1D.h
index e555788f4c9a33a4f42f8e0ea2ea0f56232ccc4a..31d3daf74105a256ce49677c49c8de1c00bada3f 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_IncrementChainingTimeStampF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_IncrementChainingTimeStampF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_TimeStampF1D.cpp b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_TimeStampF1D.cpp
index 0e134407ede78c345bea6247e7eda8149e5524be..6f5253c4e83702c891e6fdfd991ffba0965b97cf 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_TimeStampF1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_TimeStampF1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_TimeStampF1D.h b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_TimeStampF1D.h
index 117d724d1795f187f0af55bdc6ff9b6a2f28be3d..b0a5393da0e64af3a558fcdc1d19ff589f8a317c 100644
--- a/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_TimeStampF1D.h
+++ b/source/blender/freestyle/intern/python/UnaryFunction1D/UnaryFunction1D_void/BPy_TimeStampF1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_FalseUP0D.cpp b/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_FalseUP0D.cpp
index 67952df1f3ed0b83e8347fa80d7435a896014bef..d86c7216d0311edecadd3b709c0e45c2be6af102 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_FalseUP0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_FalseUP0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_FalseUP0D.h b/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_FalseUP0D.h
index 0c36e770b80b5a656fb5743b07bc97962c0e07c2..f05c1d8b31ffadf4da76c18760138ddf40819999 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_FalseUP0D.h
+++ b/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_FalseUP0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_TrueUP0D.cpp b/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_TrueUP0D.cpp
index 51697862d718706c98b01489d9372556a77cfd3a..76f8ae01769765eacbc4fb0427c48fa71627ed64 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_TrueUP0D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_TrueUP0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_TrueUP0D.h b/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_TrueUP0D.h
index abdfb4e294dddf17fff9e986350dcfa334f019fb..50d29e82813959115d867a5edb382020f13dc911 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_TrueUP0D.h
+++ b/source/blender/freestyle/intern/python/UnaryPredicate0D/BPy_TrueUP0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ContourUP1D.cpp b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ContourUP1D.cpp
index ebe62bc2bfd594b3fdb9dd6b682605f781ec83fc..81b7f3990b121bddce631a1f3fc1deaf5160b3dd 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ContourUP1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ContourUP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ContourUP1D.h b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ContourUP1D.h
index be06a0fee33377f937c1ce370fde4d9d49d699dd..b8d8f7c3c9c1475e3c3fc4f1018358f1ee80002e 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ContourUP1D.h
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ContourUP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_DensityLowerThanUP1D.cpp b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_DensityLowerThanUP1D.cpp
index daf6841d66fda2f3f870fed01358930b69492a8b..e376acd2d840840c89b88a671e294f93c3b2cd9c 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_DensityLowerThanUP1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_DensityLowerThanUP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_DensityLowerThanUP1D.h b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_DensityLowerThanUP1D.h
index 068c7727ec0c822be93cc5397d3c4a5889add492..f9aa71ca528d7aa08b36ab593825cf3b1d9e318f 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_DensityLowerThanUP1D.h
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_DensityLowerThanUP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToChainingTimeStampUP1D.cpp b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToChainingTimeStampUP1D.cpp
index e40d9703f2566653c5c75c5fc1e90a84203b7833..2f22e4350171e578772c06f8516992e3ff15d7e1 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToChainingTimeStampUP1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToChainingTimeStampUP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToChainingTimeStampUP1D.h b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToChainingTimeStampUP1D.h
index d103c1356abb73f2663764456b04ed8adf315dfa..3fd30b7707ce5c5a4551bbdf20621273ecb4c3d0 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToChainingTimeStampUP1D.h
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToChainingTimeStampUP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToTimeStampUP1D.cpp b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToTimeStampUP1D.cpp
index 6eddd7ea7b20c4a574d3ca9bf3787afe9211cbe2..dd7a3f3baa3655dcc0cd5862da92dfd3cf3e18b3 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToTimeStampUP1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToTimeStampUP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToTimeStampUP1D.h b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToTimeStampUP1D.h
index 9e3d90ab760b6b25c6b7ad45f3d0a9d4d9b0f8d3..c52dc5223e54cfe0df66814c14056cb3cad9acc6 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToTimeStampUP1D.h
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_EqualToTimeStampUP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ExternalContourUP1D.cpp b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ExternalContourUP1D.cpp
index dc552b4d7bbeacda65f046c1150e87143d0a5e1f..ab8153e6fea80f8762c6650b8a6efd5d53292775 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ExternalContourUP1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ExternalContourUP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ExternalContourUP1D.h b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ExternalContourUP1D.h
index 0576b727f4a6a0181238137bb2fefb594c016a4a..3277fed10e66805a7d8c3403d7b0e7e83432e84c 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ExternalContourUP1D.h
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ExternalContourUP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_FalseUP1D.cpp b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_FalseUP1D.cpp
index 5ce0a269db4a232610039114fd298d597e550227..4d1730040d76672de0ff89e9f474a8079b4856a8 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_FalseUP1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_FalseUP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_FalseUP1D.h b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_FalseUP1D.h
index a74d2aba0a610946cab485f89be029a6523a74a3..0e46513983d6249db752af0376340bee9a9bae6a 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_FalseUP1D.h
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_FalseUP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_QuantitativeInvisibilityUP1D.cpp b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_QuantitativeInvisibilityUP1D.cpp
index 728e6b938ab192130deebcb16fbcecbf5229aa3c..e17c770542030d714371fe6f19ca56d25f3e321d 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_QuantitativeInvisibilityUP1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_QuantitativeInvisibilityUP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_QuantitativeInvisibilityUP1D.h b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_QuantitativeInvisibilityUP1D.h
index 970ddd482733eb7b60d0e270e36eb03e4c9e5359..7a1c538259aeb107eaa54fc96edfee58da70ed80 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_QuantitativeInvisibilityUP1D.h
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_QuantitativeInvisibilityUP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ShapeUP1D.cpp b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ShapeUP1D.cpp
index e51d946a3b9c2a0af2e6e7dbb2216badd36072a4..773e6c8dfb20e6f2b11c0ec2d0513756a687207d 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ShapeUP1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ShapeUP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ShapeUP1D.h b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ShapeUP1D.h
index c60aa7aa9cfba8ed85b51f68847e4d0cb7c0648d..a4c689440b9fdf1e6869a616ce4408ed9f10f783 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ShapeUP1D.h
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_ShapeUP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_TrueUP1D.cpp b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_TrueUP1D.cpp
index af1371e0afceb2e62e3d07bbec0d194bf8a2646a..03c7f364b55cc5efd6813f9aafcd895e21d2f6f2 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_TrueUP1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_TrueUP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_TrueUP1D.h b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_TrueUP1D.h
index e036cfe95ed4e641a23046e7b215f11c1353518c..9a4030d9e1cbe44fb44b2a34471ee1aa04e0f934 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_TrueUP1D.h
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_TrueUP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_WithinImageBoundaryUP1D.cpp b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_WithinImageBoundaryUP1D.cpp
index 8dd5f93bb01c07fd1d28c9006cf285f6ab6a4b94..eea3a1cacc492cd24b7496aff37bba39bcc31dcd 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_WithinImageBoundaryUP1D.cpp
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_WithinImageBoundaryUP1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_WithinImageBoundaryUP1D.h b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_WithinImageBoundaryUP1D.h
index 1d08f7fb530b7b663368bb8b107185bc89ab510e..e8053ecd9166b8f489f78cf663a66f057413091e 100644
--- a/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_WithinImageBoundaryUP1D.h
+++ b/source/blender/freestyle/intern/python/UnaryPredicate1D/BPy_WithinImageBoundaryUP1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/DrawingStyle.h b/source/blender/freestyle/intern/scene_graph/DrawingStyle.h
index 1d96812f3f785ea86c655c93eded62dc181d777a..5dae258e3edbd1910b174091bab9d5d617a9c96e 100644
--- a/source/blender/freestyle/intern/scene_graph/DrawingStyle.h
+++ b/source/blender/freestyle/intern/scene_graph/DrawingStyle.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/FrsMaterial.h b/source/blender/freestyle/intern/scene_graph/FrsMaterial.h
index a66380f01beb03fac6ad28783262583dd0b6de70..684b7905aca244d46dcd0cf5aed0618464427091 100644
--- a/source/blender/freestyle/intern/scene_graph/FrsMaterial.h
+++ b/source/blender/freestyle/intern/scene_graph/FrsMaterial.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/IndexedFaceSet.cpp b/source/blender/freestyle/intern/scene_graph/IndexedFaceSet.cpp
index cc29bc775959f36a54d35e753a3d30009be8b01d..d02ff6990a5c37e9ad20853d4c05dbf53c23e648 100644
--- a/source/blender/freestyle/intern/scene_graph/IndexedFaceSet.cpp
+++ b/source/blender/freestyle/intern/scene_graph/IndexedFaceSet.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/IndexedFaceSet.h b/source/blender/freestyle/intern/scene_graph/IndexedFaceSet.h
index 17f922de467bbf1523f634db1aa449bad1206fff..1bae5defd67d85d7ae6a0f2cccbb4d1f593e76c6 100644
--- a/source/blender/freestyle/intern/scene_graph/IndexedFaceSet.h
+++ b/source/blender/freestyle/intern/scene_graph/IndexedFaceSet.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/LineRep.cpp b/source/blender/freestyle/intern/scene_graph/LineRep.cpp
index a9f0dc5cdd7b9469e016513eeae6bdc867ba8cf4..1d8cd286450feaac0094cfce01a145aa31941a22 100644
--- a/source/blender/freestyle/intern/scene_graph/LineRep.cpp
+++ b/source/blender/freestyle/intern/scene_graph/LineRep.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/LineRep.h b/source/blender/freestyle/intern/scene_graph/LineRep.h
index 02725102001a06a4d530bd6c2dd6f164497d495b..f11c23e89b31438c265968aaf859ca1bce7ffc4f 100644
--- a/source/blender/freestyle/intern/scene_graph/LineRep.h
+++ b/source/blender/freestyle/intern/scene_graph/LineRep.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/Node.h b/source/blender/freestyle/intern/scene_graph/Node.h
index 2907580492d6a51b82d0d9021a821742f8df631d..895947630a093867de00737831031fed83efe5aa 100644
--- a/source/blender/freestyle/intern/scene_graph/Node.h
+++ b/source/blender/freestyle/intern/scene_graph/Node.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/NodeCamera.cpp b/source/blender/freestyle/intern/scene_graph/NodeCamera.cpp
index cb30a661aaafcc4e8fa2600dec29318d006ff1c6..689a7d9d37085119935ed7529dbad99f9db6efa5 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeCamera.cpp
+++ b/source/blender/freestyle/intern/scene_graph/NodeCamera.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/NodeCamera.h b/source/blender/freestyle/intern/scene_graph/NodeCamera.h
index 0135a30f97c305cc0a08bf6ed60ab31283bd53c3..3e57b89e4a01e405c5968d7a27b3dffcdd13633f 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeCamera.h
+++ b/source/blender/freestyle/intern/scene_graph/NodeCamera.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/NodeDrawingStyle.cpp b/source/blender/freestyle/intern/scene_graph/NodeDrawingStyle.cpp
index 323ec217c33482414ff94f49b94be909621914a9..82e2de0c89d9aa066f8d8a7ade4c857682a96e7e 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeDrawingStyle.cpp
+++ b/source/blender/freestyle/intern/scene_graph/NodeDrawingStyle.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/NodeDrawingStyle.h b/source/blender/freestyle/intern/scene_graph/NodeDrawingStyle.h
index 38b84c7be3a717bec1d93d410a7eb5de89e237fa..a33bc3a06648a23f21aa431d6053f5a1120d88a9 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeDrawingStyle.h
+++ b/source/blender/freestyle/intern/scene_graph/NodeDrawingStyle.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/NodeGroup.cpp b/source/blender/freestyle/intern/scene_graph/NodeGroup.cpp
index 12082ba69a86be8b8a7a9491b0f4d40238df53f9..87f1d971e511bb956a46812b1c8239579a80d170 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeGroup.cpp
+++ b/source/blender/freestyle/intern/scene_graph/NodeGroup.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/NodeGroup.h b/source/blender/freestyle/intern/scene_graph/NodeGroup.h
index f33687d43a3894c72a1f2b2749caf83849b3f96b..b51c8c5c52f91a0498e374729a32c4d1085b4e91 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeGroup.h
+++ b/source/blender/freestyle/intern/scene_graph/NodeGroup.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/NodeLight.cpp b/source/blender/freestyle/intern/scene_graph/NodeLight.cpp
index 7200ae5e83c926b796e9f2ef98d392fad67452d0..39e3d57903323172062aa743e847ddd684f31a05 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeLight.cpp
+++ b/source/blender/freestyle/intern/scene_graph/NodeLight.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/NodeLight.h b/source/blender/freestyle/intern/scene_graph/NodeLight.h
index 7eb8fcd002920b27da0fc0ee86bbb728be2dfe40..d3e3cd64b9956eed37936e8cf8a7830ba456d3d8 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeLight.h
+++ b/source/blender/freestyle/intern/scene_graph/NodeLight.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/NodeShape.cpp b/source/blender/freestyle/intern/scene_graph/NodeShape.cpp
index cf7a609b3477d36b93af87b3b5be5675d579003a..6d9cb48bdcb44183bfd2467f0ff74a728c0a4405 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeShape.cpp
+++ b/source/blender/freestyle/intern/scene_graph/NodeShape.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/NodeShape.h b/source/blender/freestyle/intern/scene_graph/NodeShape.h
index 59b759dbae0029b76a6834dae0c8a2b149fbd2c1..9f27f436270e330d2cbe87b10032cf915999b5a3 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeShape.h
+++ b/source/blender/freestyle/intern/scene_graph/NodeShape.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/NodeTransform.cpp b/source/blender/freestyle/intern/scene_graph/NodeTransform.cpp
index 9bf0fc4f9017e1ad20b666c6593d5215f55f6e09..31101e988e5f44de264bb15cef8c1f3c81df9686 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeTransform.cpp
+++ b/source/blender/freestyle/intern/scene_graph/NodeTransform.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/NodeTransform.h b/source/blender/freestyle/intern/scene_graph/NodeTransform.h
index 3bb14ef842b6b380b047cdd37dd58a278c6cf6cc..ba0023cee9f68c23734fbbbf50edb08780ae4833 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeTransform.h
+++ b/source/blender/freestyle/intern/scene_graph/NodeTransform.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/NodeViewLayer.cpp b/source/blender/freestyle/intern/scene_graph/NodeViewLayer.cpp
index 6c64f8a53d94b4c68f21db5322a87300c31a0ccc..47cfe3811ae64dc2434f368b645d3a9844cc5740 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeViewLayer.cpp
+++ b/source/blender/freestyle/intern/scene_graph/NodeViewLayer.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/NodeViewLayer.h b/source/blender/freestyle/intern/scene_graph/NodeViewLayer.h
index 75f35eea4111f65bc9a084200a38dd6e2f44dd07..a99f6f8d627cb178cd41c16a876383547b1e2ea3 100644
--- a/source/blender/freestyle/intern/scene_graph/NodeViewLayer.h
+++ b/source/blender/freestyle/intern/scene_graph/NodeViewLayer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/OrientedLineRep.cpp b/source/blender/freestyle/intern/scene_graph/OrientedLineRep.cpp
index e8e21d37d00153dc15ee45d2ab224800ae2d8401..04a1492fdcc5a81ea90509b65b7c973eba53b8d7 100644
--- a/source/blender/freestyle/intern/scene_graph/OrientedLineRep.cpp
+++ b/source/blender/freestyle/intern/scene_graph/OrientedLineRep.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/OrientedLineRep.h b/source/blender/freestyle/intern/scene_graph/OrientedLineRep.h
index 6aaba1d30d235f8b1517ccab81fc4faf75fb4537..c1cc18a58205c6ca116cdf68832dc65b3f590b97 100644
--- a/source/blender/freestyle/intern/scene_graph/OrientedLineRep.h
+++ b/source/blender/freestyle/intern/scene_graph/OrientedLineRep.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/Rep.cpp b/source/blender/freestyle/intern/scene_graph/Rep.cpp
index 5b49243faef48f77f2eb97cadaae688c2d81df7a..3443b0a23c18c5c62acf92760933b17df42a7aa7 100644
--- a/source/blender/freestyle/intern/scene_graph/Rep.cpp
+++ b/source/blender/freestyle/intern/scene_graph/Rep.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/Rep.h b/source/blender/freestyle/intern/scene_graph/Rep.h
index 1401e69886acd633bfd836c185e80c5abe2fba4b..507cff45688cfa46cdf2c26c876b27ddc5c0e4f1 100644
--- a/source/blender/freestyle/intern/scene_graph/Rep.h
+++ b/source/blender/freestyle/intern/scene_graph/Rep.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/SceneHash.cpp b/source/blender/freestyle/intern/scene_graph/SceneHash.cpp
index e5f029d28b7ff1d0d221763dd83ad0e590b76cf5..af41421fa72db3ba9c154a612632cfd97e28ddd4 100644
--- a/source/blender/freestyle/intern/scene_graph/SceneHash.cpp
+++ b/source/blender/freestyle/intern/scene_graph/SceneHash.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/SceneHash.h b/source/blender/freestyle/intern/scene_graph/SceneHash.h
index 605e2ddaa84989c969eddaa0dd39fb01d919d0ca..7e73760ad5b48795a795cbb611b99b0c9a4ecf83 100644
--- a/source/blender/freestyle/intern/scene_graph/SceneHash.h
+++ b/source/blender/freestyle/intern/scene_graph/SceneHash.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/ScenePrettyPrinter.cpp b/source/blender/freestyle/intern/scene_graph/ScenePrettyPrinter.cpp
index 33aa368d75571f362e25f80ccb1ee295867df0bb..623b6b0e2bf2c88aaee281fea23f1853f943b3af 100644
--- a/source/blender/freestyle/intern/scene_graph/ScenePrettyPrinter.cpp
+++ b/source/blender/freestyle/intern/scene_graph/ScenePrettyPrinter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/ScenePrettyPrinter.h b/source/blender/freestyle/intern/scene_graph/ScenePrettyPrinter.h
index 9436bdccf570f83293934e495c47e1c64a53f3e8..66c2c229da77e2e3305c5a7b7be914d16f7ff709 100644
--- a/source/blender/freestyle/intern/scene_graph/ScenePrettyPrinter.h
+++ b/source/blender/freestyle/intern/scene_graph/ScenePrettyPrinter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/SceneVisitor.cpp b/source/blender/freestyle/intern/scene_graph/SceneVisitor.cpp
index 417dc381eec15974a05b65eba4efd5417d1c1425..0c797bc01633220a7514db19ba646f66779ff654 100644
--- a/source/blender/freestyle/intern/scene_graph/SceneVisitor.cpp
+++ b/source/blender/freestyle/intern/scene_graph/SceneVisitor.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/SceneVisitor.h b/source/blender/freestyle/intern/scene_graph/SceneVisitor.h
index 72e0f4cbb2879e9aa5e6873d4b19fd051593c43f..a671857f4aa53026957f80315aa0e092872519e5 100644
--- a/source/blender/freestyle/intern/scene_graph/SceneVisitor.h
+++ b/source/blender/freestyle/intern/scene_graph/SceneVisitor.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/TriangleRep.cpp b/source/blender/freestyle/intern/scene_graph/TriangleRep.cpp
index f4bc84c0e4376814b0dbdb06eae788230f3e6189..cd13f7e5a066fbcdf6956954fd1c11f7bcdd2df5 100644
--- a/source/blender/freestyle/intern/scene_graph/TriangleRep.cpp
+++ b/source/blender/freestyle/intern/scene_graph/TriangleRep.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/TriangleRep.h b/source/blender/freestyle/intern/scene_graph/TriangleRep.h
index e3f221567b0b7e5a29c25ab1c314ded735693974..4209bd4fb4eae330bac90457d026d2da8570ec46 100644
--- a/source/blender/freestyle/intern/scene_graph/TriangleRep.h
+++ b/source/blender/freestyle/intern/scene_graph/TriangleRep.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/scene_graph/VertexRep.cpp b/source/blender/freestyle/intern/scene_graph/VertexRep.cpp
index 164b9af9ac7e41622be3450687fe154d7b28df6b..4427e9db90580a7cc3a38cabfe06d770cff00d57 100644
--- a/source/blender/freestyle/intern/scene_graph/VertexRep.cpp
+++ b/source/blender/freestyle/intern/scene_graph/VertexRep.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/scene_graph/VertexRep.h b/source/blender/freestyle/intern/scene_graph/VertexRep.h
index edcb3405e4e862c8cf06950deab63dddec61da00..67cc79ca60655a71f6edfadeafdd022f37cccc1d 100644
--- a/source/blender/freestyle/intern/scene_graph/VertexRep.h
+++ b/source/blender/freestyle/intern/scene_graph/VertexRep.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/AdvancedFunctions0D.cpp b/source/blender/freestyle/intern/stroke/AdvancedFunctions0D.cpp
index 4e0253c88e9edd8189337c7fad47369df43e6dc0..0bd2b960de309f5aff5fd1bd980474b2beddb1b1 100644
--- a/source/blender/freestyle/intern/stroke/AdvancedFunctions0D.cpp
+++ b/source/blender/freestyle/intern/stroke/AdvancedFunctions0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/AdvancedFunctions0D.h b/source/blender/freestyle/intern/stroke/AdvancedFunctions0D.h
index 212187e598c12cb73edad35198fd44ba5f389e08..614bba0f977c6b99d55d9b5545d89dc08ba8a600 100644
--- a/source/blender/freestyle/intern/stroke/AdvancedFunctions0D.h
+++ b/source/blender/freestyle/intern/stroke/AdvancedFunctions0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/AdvancedFunctions1D.cpp b/source/blender/freestyle/intern/stroke/AdvancedFunctions1D.cpp
index 84f517e75356d5f4cbb6dbc344a987a92ed478c5..a759cc333f1f2f6c8698139ff50b1673c4d7b9d6 100644
--- a/source/blender/freestyle/intern/stroke/AdvancedFunctions1D.cpp
+++ b/source/blender/freestyle/intern/stroke/AdvancedFunctions1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/AdvancedFunctions1D.h b/source/blender/freestyle/intern/stroke/AdvancedFunctions1D.h
index 486e0fffcdd1c9ca66315feb89e2cd6436253e26..c19ac31ae4ace5261bb2f78f2b5e296e35d3315c 100644
--- a/source/blender/freestyle/intern/stroke/AdvancedFunctions1D.h
+++ b/source/blender/freestyle/intern/stroke/AdvancedFunctions1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/AdvancedPredicates1D.h b/source/blender/freestyle/intern/stroke/AdvancedPredicates1D.h
index d7c501e97ad8db50db8d9751c338aacc7f1fd25b..e7a11f8ea3472d50b7bb9e71301eb9753dc41fbf 100644
--- a/source/blender/freestyle/intern/stroke/AdvancedPredicates1D.h
+++ b/source/blender/freestyle/intern/stroke/AdvancedPredicates1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/AdvancedStrokeShaders.cpp b/source/blender/freestyle/intern/stroke/AdvancedStrokeShaders.cpp
index 7e2dcb8f99f0c049f4b49ae52e36620db395f55b..5530026b7ecba9a185b7d3493b292a8b37e56b6f 100644
--- a/source/blender/freestyle/intern/stroke/AdvancedStrokeShaders.cpp
+++ b/source/blender/freestyle/intern/stroke/AdvancedStrokeShaders.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/AdvancedStrokeShaders.h b/source/blender/freestyle/intern/stroke/AdvancedStrokeShaders.h
index b41beb356c4e579196a7c8025cb237997804b201..bc04d8b862bfe6b00b687a4c2bebd15f798c6d8e 100644
--- a/source/blender/freestyle/intern/stroke/AdvancedStrokeShaders.h
+++ b/source/blender/freestyle/intern/stroke/AdvancedStrokeShaders.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/BasicStrokeShaders.cpp b/source/blender/freestyle/intern/stroke/BasicStrokeShaders.cpp
index 335bfdffe9023c6d9420c1c7227500695d92c372..c801dc70114413a345a9389954ac8bc241c1225f 100644
--- a/source/blender/freestyle/intern/stroke/BasicStrokeShaders.cpp
+++ b/source/blender/freestyle/intern/stroke/BasicStrokeShaders.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/BasicStrokeShaders.h b/source/blender/freestyle/intern/stroke/BasicStrokeShaders.h
index 2b578dd963aa7fa9c50ec5895a4161eb900baaba..9f0df7b924eee86ab5f76337fe4f5e11902e776d 100644
--- a/source/blender/freestyle/intern/stroke/BasicStrokeShaders.h
+++ b/source/blender/freestyle/intern/stroke/BasicStrokeShaders.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/Canvas.cpp b/source/blender/freestyle/intern/stroke/Canvas.cpp
index dc1a6fac4a96a7fca694f1667d91850bdb1e72a6..68a183236211c978ed202e3f7ec03e1d0868186f 100644
--- a/source/blender/freestyle/intern/stroke/Canvas.cpp
+++ b/source/blender/freestyle/intern/stroke/Canvas.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/Canvas.h b/source/blender/freestyle/intern/stroke/Canvas.h
index 8d71cd534ec963f7cec72950ed4e6dcd615f96b8..41cde0f14869559be5dac5634228deec6dc21c57 100644
--- a/source/blender/freestyle/intern/stroke/Canvas.h
+++ b/source/blender/freestyle/intern/stroke/Canvas.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/Chain.cpp b/source/blender/freestyle/intern/stroke/Chain.cpp
index 4a0f31bc91049e1636f63163529acadf0c3764eb..3778727da379e923ad6be6b5c2dc0157bc98e034 100644
--- a/source/blender/freestyle/intern/stroke/Chain.cpp
+++ b/source/blender/freestyle/intern/stroke/Chain.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/Chain.h b/source/blender/freestyle/intern/stroke/Chain.h
index bcc6957b714f4fcc3cd0a6bb492a98b6019da17d..713dd1ae52eff4f38578bb3bd31b01b429e5eef4 100644
--- a/source/blender/freestyle/intern/stroke/Chain.h
+++ b/source/blender/freestyle/intern/stroke/Chain.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/ChainingIterators.cpp b/source/blender/freestyle/intern/stroke/ChainingIterators.cpp
index 51c04c8346e1adace655955afab590e752a21083..453eea58c93795116793326089a3536a32e3790a 100644
--- a/source/blender/freestyle/intern/stroke/ChainingIterators.cpp
+++ b/source/blender/freestyle/intern/stroke/ChainingIterators.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/ChainingIterators.h b/source/blender/freestyle/intern/stroke/ChainingIterators.h
index 66e0c30bea999d35c871400bf7010a21954ef183..40af57643fbbc3a8a7f11e2be5c5e99791f07b88 100644
--- a/source/blender/freestyle/intern/stroke/ChainingIterators.h
+++ b/source/blender/freestyle/intern/stroke/ChainingIterators.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/ContextFunctions.cpp b/source/blender/freestyle/intern/stroke/ContextFunctions.cpp
index c6140f463ab0e1e135172197234e0e9799d2dd47..e50b5f0b242b5a96948fe2db7509344636ed4211 100644
--- a/source/blender/freestyle/intern/stroke/ContextFunctions.cpp
+++ b/source/blender/freestyle/intern/stroke/ContextFunctions.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/ContextFunctions.h b/source/blender/freestyle/intern/stroke/ContextFunctions.h
index 4878d2a6c5412a52e19d6800a8e73586c09dd199..8a7e201322fbdc2605061dbe7ec53f24eb45317d 100644
--- a/source/blender/freestyle/intern/stroke/ContextFunctions.h
+++ b/source/blender/freestyle/intern/stroke/ContextFunctions.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/Curve.cpp b/source/blender/freestyle/intern/stroke/Curve.cpp
index 08d7a0b792adcd5fb35e0a0965592d0c01d431fb..ad6a72eaf807d67c8d460213643351642b918805 100644
--- a/source/blender/freestyle/intern/stroke/Curve.cpp
+++ b/source/blender/freestyle/intern/stroke/Curve.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/Curve.h b/source/blender/freestyle/intern/stroke/Curve.h
index b26408d818369645d079cd262326d0cc6f70dc41..01f3b67bb9d60baa2f49fe27b54bd9928f12f36b 100644
--- a/source/blender/freestyle/intern/stroke/Curve.h
+++ b/source/blender/freestyle/intern/stroke/Curve.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/CurveAdvancedIterators.h b/source/blender/freestyle/intern/stroke/CurveAdvancedIterators.h
index 5cb5ab6971165edf88932e084df6082e6828590d..b42598a44ec0184d3015e25928bcf66211e0b835 100644
--- a/source/blender/freestyle/intern/stroke/CurveAdvancedIterators.h
+++ b/source/blender/freestyle/intern/stroke/CurveAdvancedIterators.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/CurveIterators.h b/source/blender/freestyle/intern/stroke/CurveIterators.h
index abbde02979d7a0d36a3f8537db1f6e2cb900dd42..1d4cb18950980b48dceeae00ebc0a4c563aa8f5c 100644
--- a/source/blender/freestyle/intern/stroke/CurveIterators.h
+++ b/source/blender/freestyle/intern/stroke/CurveIterators.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/Modifiers.h b/source/blender/freestyle/intern/stroke/Modifiers.h
index 1952659dab7dec2bbc8cfd83cc6d18a299d06fbc..66f93ced6e883b1f85a5782255b5eee05d71e262 100644
--- a/source/blender/freestyle/intern/stroke/Modifiers.h
+++ b/source/blender/freestyle/intern/stroke/Modifiers.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/Module.h b/source/blender/freestyle/intern/stroke/Module.h
index 58c44751d91190f2f4e3d675d178d4879a1b0759..ec6b50b88dd004577e9b07cbd22ac872d9f6c384 100644
--- a/source/blender/freestyle/intern/stroke/Module.h
+++ b/source/blender/freestyle/intern/stroke/Module.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/Operators.cpp b/source/blender/freestyle/intern/stroke/Operators.cpp
index cdb85817a851c5bfc6c1d397a9e471710a8e6e43..ee9fa33285fedb140b86c9fb7593b8f640261a52 100644
--- a/source/blender/freestyle/intern/stroke/Operators.cpp
+++ b/source/blender/freestyle/intern/stroke/Operators.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/Operators.h b/source/blender/freestyle/intern/stroke/Operators.h
index 4de331993f715fa936da1a141da19237b4c662e6..aca4c8c0e36c98a1caccf2c6e138cfaf0bb9ba7a 100644
--- a/source/blender/freestyle/intern/stroke/Operators.h
+++ b/source/blender/freestyle/intern/stroke/Operators.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/PSStrokeRenderer.cpp b/source/blender/freestyle/intern/stroke/PSStrokeRenderer.cpp
index 11787e9f2a26dd23588f7a7143ca0c769cd1ad42..7734a22926099438784ca44b157d67a357b8e860 100644
--- a/source/blender/freestyle/intern/stroke/PSStrokeRenderer.cpp
+++ b/source/blender/freestyle/intern/stroke/PSStrokeRenderer.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/PSStrokeRenderer.h b/source/blender/freestyle/intern/stroke/PSStrokeRenderer.h
index 349392a4c0eedd3ce91e0c12abf531ada4c31e5f..bffbbec4763e2956eeffed4e4323be11038ed97b 100644
--- a/source/blender/freestyle/intern/stroke/PSStrokeRenderer.h
+++ b/source/blender/freestyle/intern/stroke/PSStrokeRenderer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/Predicates0D.cpp b/source/blender/freestyle/intern/stroke/Predicates0D.cpp
index e28a847df269f981d90d83d0e3c06613311db020..b7e4512eeea4053f637fad56cac700929c2db590 100644
--- a/source/blender/freestyle/intern/stroke/Predicates0D.cpp
+++ b/source/blender/freestyle/intern/stroke/Predicates0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/Predicates0D.h b/source/blender/freestyle/intern/stroke/Predicates0D.h
index 11cbfb1b831cc3a7da0cf5f0089244fef01657c5..bbe602c03e541157adb7331c06a15a3fcf9560c6 100644
--- a/source/blender/freestyle/intern/stroke/Predicates0D.h
+++ b/source/blender/freestyle/intern/stroke/Predicates0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/Predicates1D.cpp b/source/blender/freestyle/intern/stroke/Predicates1D.cpp
index e3b3fefd448ac729d1202cb56db25743fc0b820c..11bae7e0abf39a5f4ef3b9ac635ed5fa73364332 100644
--- a/source/blender/freestyle/intern/stroke/Predicates1D.cpp
+++ b/source/blender/freestyle/intern/stroke/Predicates1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/Predicates1D.h b/source/blender/freestyle/intern/stroke/Predicates1D.h
index e7be9d863dc18c2864cda73d0a753777551fd910..742b31ea353808e8f880964013b504ece73ee993 100644
--- a/source/blender/freestyle/intern/stroke/Predicates1D.h
+++ b/source/blender/freestyle/intern/stroke/Predicates1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/QInformationMap.h b/source/blender/freestyle/intern/stroke/QInformationMap.h
index 0f651a656bfcfd9e9d43be665870d6a1f217726b..8eeb0a25f8a812211367bc325aa995dd458fa87f 100644
--- a/source/blender/freestyle/intern/stroke/QInformationMap.h
+++ b/source/blender/freestyle/intern/stroke/QInformationMap.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/Stroke.cpp b/source/blender/freestyle/intern/stroke/Stroke.cpp
index 956ba2743d7adfe3ecfd664973b0c2e7d2135c90..101b89d720aa29f5c1dea5dcb999643a7145c0cb 100644
--- a/source/blender/freestyle/intern/stroke/Stroke.cpp
+++ b/source/blender/freestyle/intern/stroke/Stroke.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/Stroke.h b/source/blender/freestyle/intern/stroke/Stroke.h
index cc4c0749ca8996fc8a281fd299c3a328c5ad8134..cec3e07ed052d1584fd74e1a2a411505c83b78d8 100644
--- a/source/blender/freestyle/intern/stroke/Stroke.h
+++ b/source/blender/freestyle/intern/stroke/Stroke.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/StrokeAdvancedIterators.h b/source/blender/freestyle/intern/stroke/StrokeAdvancedIterators.h
index 0fbf94f609e3691302e14d9fe1d04fd4e016e889..591aa69312e8fc5852a4054d1cdcb99b13a2dcd1 100644
--- a/source/blender/freestyle/intern/stroke/StrokeAdvancedIterators.h
+++ b/source/blender/freestyle/intern/stroke/StrokeAdvancedIterators.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/StrokeIO.cpp b/source/blender/freestyle/intern/stroke/StrokeIO.cpp
index 686313cd04e20578c64ba66278b6bf3e9a047ee5..578fcb31f73369203ff0026e30b555804bc170b9 100644
--- a/source/blender/freestyle/intern/stroke/StrokeIO.cpp
+++ b/source/blender/freestyle/intern/stroke/StrokeIO.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/StrokeIO.h b/source/blender/freestyle/intern/stroke/StrokeIO.h
index a0e59655eedbda20194454d9b3335b47fc2d9d57..2334b97b70b74c18d2033d11e9e09565e0d492f6 100644
--- a/source/blender/freestyle/intern/stroke/StrokeIO.h
+++ b/source/blender/freestyle/intern/stroke/StrokeIO.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/StrokeIterators.h b/source/blender/freestyle/intern/stroke/StrokeIterators.h
index 20c29b21c22e916fd70357767a79e1d2b1c6276c..2a55856a12d9ae5a59632384e3791ed93623c5dd 100644
--- a/source/blender/freestyle/intern/stroke/StrokeIterators.h
+++ b/source/blender/freestyle/intern/stroke/StrokeIterators.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/StrokeLayer.cpp b/source/blender/freestyle/intern/stroke/StrokeLayer.cpp
index 9d12067512c71a5783df269719f231eb2c0c487f..96b0a089dffa1cf95678416fee6153cbf9420856 100644
--- a/source/blender/freestyle/intern/stroke/StrokeLayer.cpp
+++ b/source/blender/freestyle/intern/stroke/StrokeLayer.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/StrokeLayer.h b/source/blender/freestyle/intern/stroke/StrokeLayer.h
index 3bcd675d295671a2c5d2e5c19ec2b5592cb74d5a..d9111c6cbec338b1d007ef91a72248fccf2aed48 100644
--- a/source/blender/freestyle/intern/stroke/StrokeLayer.h
+++ b/source/blender/freestyle/intern/stroke/StrokeLayer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/StrokeRenderer.cpp b/source/blender/freestyle/intern/stroke/StrokeRenderer.cpp
index 797fcc1aabc9a1e034b6f5c939d1e62bda06f248..35ee41adbafb13ba8818f9c9fa756616222af4e4 100644
--- a/source/blender/freestyle/intern/stroke/StrokeRenderer.cpp
+++ b/source/blender/freestyle/intern/stroke/StrokeRenderer.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/StrokeRenderer.h b/source/blender/freestyle/intern/stroke/StrokeRenderer.h
index 61b530b964330c08e4398ebe4048eb3347e454bd..6abb03ed6dc1d8fd6e6b15191073af6f0abc9108 100644
--- a/source/blender/freestyle/intern/stroke/StrokeRenderer.h
+++ b/source/blender/freestyle/intern/stroke/StrokeRenderer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/StrokeRep.cpp b/source/blender/freestyle/intern/stroke/StrokeRep.cpp
index aadc42beb4b3b5508daf2296d10f3f99ed857235..e8ff46df73171b3bbb67e3ee3c9960f2c0d18fbe 100644
--- a/source/blender/freestyle/intern/stroke/StrokeRep.cpp
+++ b/source/blender/freestyle/intern/stroke/StrokeRep.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/StrokeRep.h b/source/blender/freestyle/intern/stroke/StrokeRep.h
index cc889aac3644d2cb5f9f4ee3965ccc0b52f17507..439abefd756ec38c59588a3fb82e9c1361e5fe75 100644
--- a/source/blender/freestyle/intern/stroke/StrokeRep.h
+++ b/source/blender/freestyle/intern/stroke/StrokeRep.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/StrokeShader.cpp b/source/blender/freestyle/intern/stroke/StrokeShader.cpp
index b37e137b6f62f0478b1a7fc468ca10f4961efca5..233eaefcf56952554555bcf38dd62de85f354a90 100644
--- a/source/blender/freestyle/intern/stroke/StrokeShader.cpp
+++ b/source/blender/freestyle/intern/stroke/StrokeShader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/StrokeShader.h b/source/blender/freestyle/intern/stroke/StrokeShader.h
index e4a8412d52a6e2a68cb717271a38bd65f05e9988..d4a916e2677bfeb3e053690d6ff9aeeb90a241f1 100644
--- a/source/blender/freestyle/intern/stroke/StrokeShader.h
+++ b/source/blender/freestyle/intern/stroke/StrokeShader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/StrokeTesselator.cpp b/source/blender/freestyle/intern/stroke/StrokeTesselator.cpp
index d4ebaac2459504bba29db7c0d7f291a86c382718..2dce6140c3f96e43ff5e3e2fb8d7786b1028492b 100644
--- a/source/blender/freestyle/intern/stroke/StrokeTesselator.cpp
+++ b/source/blender/freestyle/intern/stroke/StrokeTesselator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/stroke/StrokeTesselator.h b/source/blender/freestyle/intern/stroke/StrokeTesselator.h
index b03db823d18c8a2e0c533f84ee11786afe993e4d..3e4184bf6cfdf3c656610852efe24928745367d5 100644
--- a/source/blender/freestyle/intern/stroke/StrokeTesselator.h
+++ b/source/blender/freestyle/intern/stroke/StrokeTesselator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/StyleModule.h b/source/blender/freestyle/intern/stroke/StyleModule.h
index 398e4c7ee774e38814c68e397cc894b5b3d32b14..2b51ee895703a26b1c24a44f336a45b48247b232 100644
--- a/source/blender/freestyle/intern/stroke/StyleModule.h
+++ b/source/blender/freestyle/intern/stroke/StyleModule.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/stroke/TextStrokeRenderer.cpp b/source/blender/freestyle/intern/stroke/TextStrokeRenderer.cpp
index dc98096129d11dc2a7c49a7e61fd965fd50325d4..b2b151a74ccf371619f76ada630f2ce971495049 100644
--- a/source/blender/freestyle/intern/stroke/TextStrokeRenderer.cpp
+++ b/source/blender/freestyle/intern/stroke/TextStrokeRenderer.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "TextStrokeRenderer.h"
 #include "Canvas.h"
diff --git a/source/blender/freestyle/intern/stroke/TextStrokeRenderer.h b/source/blender/freestyle/intern/stroke/TextStrokeRenderer.h
index 09c597791a22aff2bf53a12511d13a0f00701c76..752af20d1e0730e0bbcad69bdef41021e58ccd09 100644
--- a/source/blender/freestyle/intern/stroke/TextStrokeRenderer.h
+++ b/source/blender/freestyle/intern/stroke/TextStrokeRenderer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/system/BaseIterator.h b/source/blender/freestyle/intern/system/BaseIterator.h
index 7792fded4cb2735a9b650aa4c80b5935a969b746..0d20097cdb644aa52bc90cb6397b4a111b192245 100644
--- a/source/blender/freestyle/intern/system/BaseIterator.h
+++ b/source/blender/freestyle/intern/system/BaseIterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/BaseObject.cpp b/source/blender/freestyle/intern/system/BaseObject.cpp
index a386812850b4e4206ae07bfc8edd9f5649824e2f..05cb4548e1e1f87d79c0c966e983f9be519e6016 100644
--- a/source/blender/freestyle/intern/system/BaseObject.cpp
+++ b/source/blender/freestyle/intern/system/BaseObject.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/system/BaseObject.h b/source/blender/freestyle/intern/system/BaseObject.h
index 8a19100a5c631357cc48aff15f3c8a34ae3a866d..9a6fe675b0cd7d7fcd57f269d964c020caaeb6dc 100644
--- a/source/blender/freestyle/intern/system/BaseObject.h
+++ b/source/blender/freestyle/intern/system/BaseObject.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/Cast.h b/source/blender/freestyle/intern/system/Cast.h
index db0defbae22e5f3662f09114c87bb67dc644bfe2..31504a072258afc21fbe99a20fb2428726b56699 100644
--- a/source/blender/freestyle/intern/system/Cast.h
+++ b/source/blender/freestyle/intern/system/Cast.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/Exception.cpp b/source/blender/freestyle/intern/system/Exception.cpp
index 2ecf3964cd747f48880d612c1c1053655d9d680c..7fafd321f4e291c8c59c7cb0de313cd3f0dc35f0 100644
--- a/source/blender/freestyle/intern/system/Exception.cpp
+++ b/source/blender/freestyle/intern/system/Exception.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/system/Exception.h b/source/blender/freestyle/intern/system/Exception.h
index 618c2171fb9357d4d257842bbcc7f5b77910dc65..15557bb4c8793de9c0ad1e0e29986e3c68c58022 100644
--- a/source/blender/freestyle/intern/system/Exception.h
+++ b/source/blender/freestyle/intern/system/Exception.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/FreestyleConfig.h b/source/blender/freestyle/intern/system/FreestyleConfig.h
index 92c207a1b7f25f059d25be4b43100df812703d60..4f01c4b3f0bca6156133756deaf838c2c016aee7 100644
--- a/source/blender/freestyle/intern/system/FreestyleConfig.h
+++ b/source/blender/freestyle/intern/system/FreestyleConfig.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/Id.h b/source/blender/freestyle/intern/system/Id.h
index 92ce5f28fb134ef23d5a773e97127d70aaac1a7d..e2833ed84fc8b9db5ebc8c1d63a9c3dd86b6f311 100644
--- a/source/blender/freestyle/intern/system/Id.h
+++ b/source/blender/freestyle/intern/system/Id.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/Interpreter.h b/source/blender/freestyle/intern/system/Interpreter.h
index 0a5c0302fe60da04fc3e5959a65b8f1cc2b6f028..33af5ef37142d4076a0157da6ef1c61d7182fda6 100644
--- a/source/blender/freestyle/intern/system/Interpreter.h
+++ b/source/blender/freestyle/intern/system/Interpreter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/Iterator.cpp b/source/blender/freestyle/intern/system/Iterator.cpp
index c4bc25388263025ad8f68e0c65f7b9944ec031a0..3ff3697f5d1982ef423eacddd5b9095a953951d9 100644
--- a/source/blender/freestyle/intern/system/Iterator.cpp
+++ b/source/blender/freestyle/intern/system/Iterator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/system/Iterator.h b/source/blender/freestyle/intern/system/Iterator.h
index d2086f637d9c5bab9955d6393d783501df66c74e..e9b2f1c3722db5470b68aea0269d520e5c3d7c5c 100644
--- a/source/blender/freestyle/intern/system/Iterator.h
+++ b/source/blender/freestyle/intern/system/Iterator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/PointerSequence.h b/source/blender/freestyle/intern/system/PointerSequence.h
index c2301ee740df0cfb6e81ae83b4f89a543c040749..45fd1b91cccf47e4dd8b28d3db5ea1e3a4912fd0 100644
--- a/source/blender/freestyle/intern/system/PointerSequence.h
+++ b/source/blender/freestyle/intern/system/PointerSequence.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/Precision.h b/source/blender/freestyle/intern/system/Precision.h
index 6a6435299ca0d962983bde8a1bc01a5124af36d9..21f40a50074d373c084bba4d1abfcf114ea77de6 100644
--- a/source/blender/freestyle/intern/system/Precision.h
+++ b/source/blender/freestyle/intern/system/Precision.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/ProgressBar.h b/source/blender/freestyle/intern/system/ProgressBar.h
index 6919c6245454dbe2989ed43c7b8ce994c882ef56..b52dfe34f23f549e87c3a177664fbdecc49dc94a 100644
--- a/source/blender/freestyle/intern/system/ProgressBar.h
+++ b/source/blender/freestyle/intern/system/ProgressBar.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/PseudoNoise.cpp b/source/blender/freestyle/intern/system/PseudoNoise.cpp
index 7f568fcf460e13493a243426cabf23594e1a626e..ad2950c73a96e6ece9c9528a0b2b716f262ba49d 100644
--- a/source/blender/freestyle/intern/system/PseudoNoise.cpp
+++ b/source/blender/freestyle/intern/system/PseudoNoise.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/system/PseudoNoise.h b/source/blender/freestyle/intern/system/PseudoNoise.h
index 3be74bf01106baef6453c9dbcee3a1ac2218aedd..fda1dd1d083e6bf62509cb331954eb0ca6a8847f 100644
--- a/source/blender/freestyle/intern/system/PseudoNoise.h
+++ b/source/blender/freestyle/intern/system/PseudoNoise.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/PythonInterpreter.cpp b/source/blender/freestyle/intern/system/PythonInterpreter.cpp
index 320460c4460573a9bc98522cf072fa9509e5a0df..33ae070c58ba6057bf1acf258442cba8535ba867 100644
--- a/source/blender/freestyle/intern/system/PythonInterpreter.cpp
+++ b/source/blender/freestyle/intern/system/PythonInterpreter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/system/PythonInterpreter.h b/source/blender/freestyle/intern/system/PythonInterpreter.h
index 90dbc259038cb90d19426a85c86563209b8f65cd..8b2d3c5bb607e82dc3944f3a358060d5ec111076 100644
--- a/source/blender/freestyle/intern/system/PythonInterpreter.h
+++ b/source/blender/freestyle/intern/system/PythonInterpreter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/RandGen.cpp b/source/blender/freestyle/intern/system/RandGen.cpp
index d4cd6796a68a95435e9019b1ae7c28b28958b1aa..d18d53c767f65bf5377fe22766b7e976c61d2019 100644
--- a/source/blender/freestyle/intern/system/RandGen.cpp
+++ b/source/blender/freestyle/intern/system/RandGen.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/system/RandGen.h b/source/blender/freestyle/intern/system/RandGen.h
index 9d9697a2d3445c5e3a3147b7c87943384d1dba1b..307d7f7bf48227a854e04c711fbfce3700e3be6e 100644
--- a/source/blender/freestyle/intern/system/RandGen.h
+++ b/source/blender/freestyle/intern/system/RandGen.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/RenderMonitor.h b/source/blender/freestyle/intern/system/RenderMonitor.h
index 5d543f32dfb6832121c357bb716b9f01e9252d3a..585507e8a9ca796be4f8ac99d97a6319eac1627c 100644
--- a/source/blender/freestyle/intern/system/RenderMonitor.h
+++ b/source/blender/freestyle/intern/system/RenderMonitor.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/StringUtils.cpp b/source/blender/freestyle/intern/system/StringUtils.cpp
index b488987dd41adc3ae49e179d661761ceb903ffcd..1ecd5a2126da964d798aac1dd4df5916b04f07a3 100644
--- a/source/blender/freestyle/intern/system/StringUtils.cpp
+++ b/source/blender/freestyle/intern/system/StringUtils.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/system/StringUtils.h b/source/blender/freestyle/intern/system/StringUtils.h
index dc63f20f29475e319f483b5aa3a56bba212a7bb2..0bb0c85306ed56bed30b95956a25bbfc9d8eeef3 100644
--- a/source/blender/freestyle/intern/system/StringUtils.h
+++ b/source/blender/freestyle/intern/system/StringUtils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/TimeStamp.cpp b/source/blender/freestyle/intern/system/TimeStamp.cpp
index a751b93890879b9d2ef25105cf1094d1ecea8470..65b83f698b921e2f5084c524abfcead59463d1ee 100644
--- a/source/blender/freestyle/intern/system/TimeStamp.cpp
+++ b/source/blender/freestyle/intern/system/TimeStamp.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/system/TimeStamp.h b/source/blender/freestyle/intern/system/TimeStamp.h
index 5560bf8be8de021667c2c4c7a7cdb9fae999bef4..ee3f73e1f190f6a9884c6f3f2f90e049d6788ddf 100644
--- a/source/blender/freestyle/intern/system/TimeStamp.h
+++ b/source/blender/freestyle/intern/system/TimeStamp.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/system/TimeUtils.h b/source/blender/freestyle/intern/system/TimeUtils.h
index 3c8a28e9e43637669f3e45e12069edafa6f54ca2..d1c83e7572a66dcda93f60d0bfa1f64ebdec38a5 100644
--- a/source/blender/freestyle/intern/system/TimeUtils.h
+++ b/source/blender/freestyle/intern/system/TimeUtils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/ArbitraryGridDensityProvider.cpp b/source/blender/freestyle/intern/view_map/ArbitraryGridDensityProvider.cpp
index 923748e6d7d3ab03461233627cc300e198251627..ad2ebb737a5d527464163d3a17e2ccd4c9dd8379 100644
--- a/source/blender/freestyle/intern/view_map/ArbitraryGridDensityProvider.cpp
+++ b/source/blender/freestyle/intern/view_map/ArbitraryGridDensityProvider.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/ArbitraryGridDensityProvider.h b/source/blender/freestyle/intern/view_map/ArbitraryGridDensityProvider.h
index ce23d23d7ed78062eaeb2c46bbd5ce612408f720..08d6e6ca70536bae29deea9fc736e2878a5fdbeb 100644
--- a/source/blender/freestyle/intern/view_map/ArbitraryGridDensityProvider.h
+++ b/source/blender/freestyle/intern/view_map/ArbitraryGridDensityProvider.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/AutoPtrHelper.h b/source/blender/freestyle/intern/view_map/AutoPtrHelper.h
index cfcfa5e651bff9f9918c70463a6b8da9babb5a51..bee29bc23a920efdad8ede3994fb353519ddd502 100644
--- a/source/blender/freestyle/intern/view_map/AutoPtrHelper.h
+++ b/source/blender/freestyle/intern/view_map/AutoPtrHelper.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/AverageAreaGridDensityProvider.cpp b/source/blender/freestyle/intern/view_map/AverageAreaGridDensityProvider.cpp
index 9fa8f9dcbc2f792f98a96ed51eb518ed7ca48258..6b66ce17373053fc6bde29d8f3adf7bcb5c14ffa 100644
--- a/source/blender/freestyle/intern/view_map/AverageAreaGridDensityProvider.cpp
+++ b/source/blender/freestyle/intern/view_map/AverageAreaGridDensityProvider.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/AverageAreaGridDensityProvider.h b/source/blender/freestyle/intern/view_map/AverageAreaGridDensityProvider.h
index 402fc6f210dfe9d76ed0857c1783b593a05bf49e..0a764d99a0e12a3b36cdefa14aa084fefab9fbfb 100644
--- a/source/blender/freestyle/intern/view_map/AverageAreaGridDensityProvider.h
+++ b/source/blender/freestyle/intern/view_map/AverageAreaGridDensityProvider.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/BoxGrid.cpp b/source/blender/freestyle/intern/view_map/BoxGrid.cpp
index ffc0d41bfba033675b8ce8987d64884c213ec7ed..c8a6f0a0a3e00ba0e594fa8b00642af73f816ae7 100644
--- a/source/blender/freestyle/intern/view_map/BoxGrid.cpp
+++ b/source/blender/freestyle/intern/view_map/BoxGrid.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/BoxGrid.h b/source/blender/freestyle/intern/view_map/BoxGrid.h
index 23085d37a3fa1b4c6da10e39e0ff2661fd164b43..f1b2ec218dbd68c9df496f2cffbd60d84effec6d 100644
--- a/source/blender/freestyle/intern/view_map/BoxGrid.h
+++ b/source/blender/freestyle/intern/view_map/BoxGrid.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/CulledOccluderSource.cpp b/source/blender/freestyle/intern/view_map/CulledOccluderSource.cpp
index 61de0078a8f14c6a9cfd24be0877a7af3fd6707d..8ae6bec2fb2e777254656f3c7f994cb81fbd24de 100644
--- a/source/blender/freestyle/intern/view_map/CulledOccluderSource.cpp
+++ b/source/blender/freestyle/intern/view_map/CulledOccluderSource.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/CulledOccluderSource.h b/source/blender/freestyle/intern/view_map/CulledOccluderSource.h
index 16f57f6dc2a9f13fff82707e0d5bc622f6bfca93..6861b978c6b8efd23f63348039037175c0ad2fb0 100644
--- a/source/blender/freestyle/intern/view_map/CulledOccluderSource.h
+++ b/source/blender/freestyle/intern/view_map/CulledOccluderSource.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/FEdgeXDetector.cpp b/source/blender/freestyle/intern/view_map/FEdgeXDetector.cpp
index de7fcb7a728be1f5e9a29f2668f85131bf78aaee..cd36e4b0fe97f14072df6f286a7f1c1417130721 100644
--- a/source/blender/freestyle/intern/view_map/FEdgeXDetector.cpp
+++ b/source/blender/freestyle/intern/view_map/FEdgeXDetector.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/FEdgeXDetector.h b/source/blender/freestyle/intern/view_map/FEdgeXDetector.h
index 1a96cf3deea72150b1c3e6a93be77504e72b6625..93c6a6a5d74d73493d16d268796bad5cd5288522 100644
--- a/source/blender/freestyle/intern/view_map/FEdgeXDetector.h
+++ b/source/blender/freestyle/intern/view_map/FEdgeXDetector.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/Functions0D.cpp b/source/blender/freestyle/intern/view_map/Functions0D.cpp
index 4ea163c47cf5bf53b5b16f4b19ed8471221f36ea..a461f36885938591636802b70d83ae9d2bce209d 100644
--- a/source/blender/freestyle/intern/view_map/Functions0D.cpp
+++ b/source/blender/freestyle/intern/view_map/Functions0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/Functions0D.h b/source/blender/freestyle/intern/view_map/Functions0D.h
index 7409e1737a41d215248246ca6ffb6c5718ed84f4..eb88eb29b4c8c1044aa2d850aec254f7d94b52f9 100644
--- a/source/blender/freestyle/intern/view_map/Functions0D.h
+++ b/source/blender/freestyle/intern/view_map/Functions0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/Functions1D.cpp b/source/blender/freestyle/intern/view_map/Functions1D.cpp
index 999d7f6e753d94ee37d7387c2acaf88196e01af6..0367379542bfad4f7bc6e8b4efc91921e26babe0 100644
--- a/source/blender/freestyle/intern/view_map/Functions1D.cpp
+++ b/source/blender/freestyle/intern/view_map/Functions1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/Functions1D.h b/source/blender/freestyle/intern/view_map/Functions1D.h
index e45bc459bf0602ef1190da4d8f1e665e675fd3b7..bdee5db598e006419c8c7d385c7cc71093db71dd 100644
--- a/source/blender/freestyle/intern/view_map/Functions1D.h
+++ b/source/blender/freestyle/intern/view_map/Functions1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/GridDensityProvider.h b/source/blender/freestyle/intern/view_map/GridDensityProvider.h
index e663f14d36857f4d098fb54ed67056b14c4330e9..1b27e54d406642a002ce75e965963c4cf04affb2 100644
--- a/source/blender/freestyle/intern/view_map/GridDensityProvider.h
+++ b/source/blender/freestyle/intern/view_map/GridDensityProvider.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/HeuristicGridDensityProviderFactory.cpp b/source/blender/freestyle/intern/view_map/HeuristicGridDensityProviderFactory.cpp
index 683482d684818ba26389d16dc4f9e7fda5d453e4..f5a6a5ed5a97cb48c5011147511080c39664a769 100644
--- a/source/blender/freestyle/intern/view_map/HeuristicGridDensityProviderFactory.cpp
+++ b/source/blender/freestyle/intern/view_map/HeuristicGridDensityProviderFactory.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/HeuristicGridDensityProviderFactory.h b/source/blender/freestyle/intern/view_map/HeuristicGridDensityProviderFactory.h
index df0f4bd354774a60fdffd9eb5920e6bdf648e5eb..ea75bfacf6b28a436eff21050183cc75dfb52b41 100644
--- a/source/blender/freestyle/intern/view_map/HeuristicGridDensityProviderFactory.h
+++ b/source/blender/freestyle/intern/view_map/HeuristicGridDensityProviderFactory.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/Interface0D.cpp b/source/blender/freestyle/intern/view_map/Interface0D.cpp
index 907b21ad5cf51b7ea419edf262a5f1817dfc26a5..8c5e762d14707540a0c18aea3da860a37964e591 100644
--- a/source/blender/freestyle/intern/view_map/Interface0D.cpp
+++ b/source/blender/freestyle/intern/view_map/Interface0D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/Interface0D.h b/source/blender/freestyle/intern/view_map/Interface0D.h
index d7b213706b5867223cd0e126089a8169cca554b3..115ae1fe8d9087e8b576a62f16b615ef26e7174f 100644
--- a/source/blender/freestyle/intern/view_map/Interface0D.h
+++ b/source/blender/freestyle/intern/view_map/Interface0D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/Interface1D.cpp b/source/blender/freestyle/intern/view_map/Interface1D.cpp
index ef2193658318b5975aea017d514299c2d4abf2e6..49429b7d7a8391d1cdf849ef7a5c6a74d643570b 100644
--- a/source/blender/freestyle/intern/view_map/Interface1D.cpp
+++ b/source/blender/freestyle/intern/view_map/Interface1D.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/Interface1D.h b/source/blender/freestyle/intern/view_map/Interface1D.h
index 75ad71a373dfcc6502fb2c84a5b3732b87165e0c..5ab6fc794f9c0c84aced4ee1f4829e631c1c23d3 100644
--- a/source/blender/freestyle/intern/view_map/Interface1D.h
+++ b/source/blender/freestyle/intern/view_map/Interface1D.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/OccluderSource.cpp b/source/blender/freestyle/intern/view_map/OccluderSource.cpp
index 57e6e39b809cdce3fc6298336cb9a8359c2409d4..378b017b504d1f5ce28a65681fd142244f4bfc18 100644
--- a/source/blender/freestyle/intern/view_map/OccluderSource.cpp
+++ b/source/blender/freestyle/intern/view_map/OccluderSource.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/OccluderSource.h b/source/blender/freestyle/intern/view_map/OccluderSource.h
index befde3c1b1bc5ceacba1edae9c0d4e3f6899ef9a..5f1dc9156ab95814b29d749557cc6b3b9f467fd0 100644
--- a/source/blender/freestyle/intern/view_map/OccluderSource.h
+++ b/source/blender/freestyle/intern/view_map/OccluderSource.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/Pow23GridDensityProvider.cpp b/source/blender/freestyle/intern/view_map/Pow23GridDensityProvider.cpp
index b9bf585a9e75dc8955534fa2966b12436084c19c..0fde521d315751d13237bdf700e501d73f2736cd 100644
--- a/source/blender/freestyle/intern/view_map/Pow23GridDensityProvider.cpp
+++ b/source/blender/freestyle/intern/view_map/Pow23GridDensityProvider.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/Pow23GridDensityProvider.h b/source/blender/freestyle/intern/view_map/Pow23GridDensityProvider.h
index d150786b1c776e9060b139af22e363831ee97ce2..c698400a8336ce94ff05a9e4a7f9ad3e4c1a6888 100644
--- a/source/blender/freestyle/intern/view_map/Pow23GridDensityProvider.h
+++ b/source/blender/freestyle/intern/view_map/Pow23GridDensityProvider.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/Silhouette.cpp b/source/blender/freestyle/intern/view_map/Silhouette.cpp
index 0f9d1f166b28ba7cf2ae98d98457d3a828a0d076..54e0626a7af952e5e537ca97268dc92a844a5acc 100644
--- a/source/blender/freestyle/intern/view_map/Silhouette.cpp
+++ b/source/blender/freestyle/intern/view_map/Silhouette.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/Silhouette.h b/source/blender/freestyle/intern/view_map/Silhouette.h
index 479dbaeedc1d473cc732bcfe28a513ed16e1b197..28205d978e0355cd6dbfa5e01e56b1819626d3cc 100644
--- a/source/blender/freestyle/intern/view_map/Silhouette.h
+++ b/source/blender/freestyle/intern/view_map/Silhouette.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.cpp b/source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.cpp
index 21b0827a6601dbb4ebc81f2184309cf812030ebf..dfe6bfdd0cf55dbcdfb23bd233d93d2bc4e805dc 100644
--- a/source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.cpp
+++ b/source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.h b/source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.h
index 25b2eacd5073a5653a6a9d199c06aba1647ccbbc..90a1989f0b91669d51a479f5477a670337554cc4 100644
--- a/source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.h
+++ b/source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/SphericalGrid.cpp b/source/blender/freestyle/intern/view_map/SphericalGrid.cpp
index f6c57588e35fd2b80c929a578ee14cfb46b3b846..2a7637eb35067b48904d215c909dca50cd29d563 100644
--- a/source/blender/freestyle/intern/view_map/SphericalGrid.cpp
+++ b/source/blender/freestyle/intern/view_map/SphericalGrid.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/SphericalGrid.h b/source/blender/freestyle/intern/view_map/SphericalGrid.h
index ae052ff3e127ffc7edcc00d30192fdaaa3de8b2c..9e2c2ae6ca97f037bade3b060b6cf5636b051ae0 100644
--- a/source/blender/freestyle/intern/view_map/SphericalGrid.h
+++ b/source/blender/freestyle/intern/view_map/SphericalGrid.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/SteerableViewMap.cpp b/source/blender/freestyle/intern/view_map/SteerableViewMap.cpp
index d8a1e597a1d73ed6d9c5ee657d81fad80cd85405..1211b55e8e155cb4f2ea99eac034a0420cfb8312 100644
--- a/source/blender/freestyle/intern/view_map/SteerableViewMap.cpp
+++ b/source/blender/freestyle/intern/view_map/SteerableViewMap.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/SteerableViewMap.h b/source/blender/freestyle/intern/view_map/SteerableViewMap.h
index d007a08c3fd132bba940c70095486bbee75b7499..cd707a9cca103cd0a0c1bbe225549458fbbe0038 100644
--- a/source/blender/freestyle/intern/view_map/SteerableViewMap.h
+++ b/source/blender/freestyle/intern/view_map/SteerableViewMap.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/ViewEdgeXBuilder.cpp b/source/blender/freestyle/intern/view_map/ViewEdgeXBuilder.cpp
index 24c56572803b23fa5b535bc28a86ef948077b25e..81e7abf6d5ce59afd3f5af5c2c73218843994049 100644
--- a/source/blender/freestyle/intern/view_map/ViewEdgeXBuilder.cpp
+++ b/source/blender/freestyle/intern/view_map/ViewEdgeXBuilder.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/ViewEdgeXBuilder.h b/source/blender/freestyle/intern/view_map/ViewEdgeXBuilder.h
index d181348b3da621a74a9d46e614bcb550505dc632..6483b53478809b8c9701a34f2200bbb39a87b84b 100644
--- a/source/blender/freestyle/intern/view_map/ViewEdgeXBuilder.h
+++ b/source/blender/freestyle/intern/view_map/ViewEdgeXBuilder.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/ViewMap.cpp b/source/blender/freestyle/intern/view_map/ViewMap.cpp
index f1b0072479307502b9f60a20ef64d9bfea4a7911..b26a833b32e4d76d1e9fcce5b27b2369db44d193 100644
--- a/source/blender/freestyle/intern/view_map/ViewMap.cpp
+++ b/source/blender/freestyle/intern/view_map/ViewMap.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/ViewMap.h b/source/blender/freestyle/intern/view_map/ViewMap.h
index e7d57c9dfb4c544f0b9a7c6658be0767e4f67669..729b31965c8be087c6547ac2c1ee2f5f0597feca 100644
--- a/source/blender/freestyle/intern/view_map/ViewMap.h
+++ b/source/blender/freestyle/intern/view_map/ViewMap.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/ViewMapAdvancedIterators.h b/source/blender/freestyle/intern/view_map/ViewMapAdvancedIterators.h
index b33bc4f281f95b7cafc61fd227b6964336c5f7dc..2dee1be5a8a436d4ea78e6f6aaf3cf0643a0c502 100644
--- a/source/blender/freestyle/intern/view_map/ViewMapAdvancedIterators.h
+++ b/source/blender/freestyle/intern/view_map/ViewMapAdvancedIterators.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/ViewMapBuilder.cpp b/source/blender/freestyle/intern/view_map/ViewMapBuilder.cpp
index b1aea8bf6cf588c75f8f65f35912c53cd511b5a3..dc3b7d9795a430fef0c58b09eeb18f0110214645 100644
--- a/source/blender/freestyle/intern/view_map/ViewMapBuilder.cpp
+++ b/source/blender/freestyle/intern/view_map/ViewMapBuilder.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/ViewMapBuilder.h b/source/blender/freestyle/intern/view_map/ViewMapBuilder.h
index 4f26ec82eb6e044e612b3975dc3f9c7a1e0cc5a6..90bbef6a52d0a05548ba161bed296d8496f26c60 100644
--- a/source/blender/freestyle/intern/view_map/ViewMapBuilder.h
+++ b/source/blender/freestyle/intern/view_map/ViewMapBuilder.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/ViewMapIO.cpp b/source/blender/freestyle/intern/view_map/ViewMapIO.cpp
index 7cb06673811802ae61f93dcc04e84c104fa8745e..47d9e61ba2f128205cd2e197e7122344a8091cd4 100644
--- a/source/blender/freestyle/intern/view_map/ViewMapIO.cpp
+++ b/source/blender/freestyle/intern/view_map/ViewMapIO.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/ViewMapIO.h b/source/blender/freestyle/intern/view_map/ViewMapIO.h
index 4b737f1eb8cf3e85f9ab9edab807cd5c89b7fa60..4796b28a38aa7844f158e4bd42cf52e5d5a84299 100644
--- a/source/blender/freestyle/intern/view_map/ViewMapIO.h
+++ b/source/blender/freestyle/intern/view_map/ViewMapIO.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/ViewMapIterators.h b/source/blender/freestyle/intern/view_map/ViewMapIterators.h
index 1df78e71d9da28adbac4deea42994f974688daad..e8ac5d2ced331bf60ab9ce3ed029dcad5e68e21b 100644
--- a/source/blender/freestyle/intern/view_map/ViewMapIterators.h
+++ b/source/blender/freestyle/intern/view_map/ViewMapIterators.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/view_map/ViewMapTesselator.cpp b/source/blender/freestyle/intern/view_map/ViewMapTesselator.cpp
index 9b87bf762faae60a6195766918e25c17d43be3bf..75b716ee9da865acc80fd9bd0e1488d262aea698 100644
--- a/source/blender/freestyle/intern/view_map/ViewMapTesselator.cpp
+++ b/source/blender/freestyle/intern/view_map/ViewMapTesselator.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/view_map/ViewMapTesselator.h b/source/blender/freestyle/intern/view_map/ViewMapTesselator.h
index ff709879e74ca0666116fe6b65c965de5059297c..9a40ebe7cd7fdc40c2b1f7a9036f7906f684dd4c 100644
--- a/source/blender/freestyle/intern/view_map/ViewMapTesselator.h
+++ b/source/blender/freestyle/intern/view_map/ViewMapTesselator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/winged_edge/Curvature.cpp b/source/blender/freestyle/intern/winged_edge/Curvature.cpp
index 571f21ac30967a53119f11028cb74e1f284f6558..fba3110907aeda28c5c1f63601dbf0f467ea8e4c 100644
--- a/source/blender/freestyle/intern/winged_edge/Curvature.cpp
+++ b/source/blender/freestyle/intern/winged_edge/Curvature.cpp
@@ -1,25 +1,10 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * The Original Code is:
  *     GTS - Library for the manipulation of triangulated surfaces
- *     Copyright (C) 1999 Stephane Popinet
+ *     Copyright 1999 Stephane Popinet
  * and:
  *     OGF/Graphite: Geometry and Graphics Programming Library + Utilities
- *     Copyright 2000-2003 Bruno Levy <levy@loria.fr>
- */
+ *     Copyright 2000-2003 Bruno Levy <levy@loria.fr> */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/winged_edge/Curvature.h b/source/blender/freestyle/intern/winged_edge/Curvature.h
index c87134a0c143ffc17863f957e79e76ba912ef949..2a801b45465b253ba0b1b2e8caca1735ec35e39f 100644
--- a/source/blender/freestyle/intern/winged_edge/Curvature.h
+++ b/source/blender/freestyle/intern/winged_edge/Curvature.h
@@ -1,25 +1,10 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * The Original Code is:
  *     GTS - Library for the manipulation of triangulated surfaces
  *     Copyright 1999 Stephane Popinet
  * and:
  *     OGF/Graphite: Geometry and Graphics Programming Library + Utilities
- *     Copyright (C) 2000-2003 Bruno Levy <levy@loria.fr>
- */
+ *     Copyright 2000-2003 Bruno Levy <levy@loria.fr> */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/winged_edge/Nature.h b/source/blender/freestyle/intern/winged_edge/Nature.h
index 996161abee2c06819c30dc72b38109c6feda881e..b7a21e80181790b0e83f3aead84575a0fd26b7ff 100644
--- a/source/blender/freestyle/intern/winged_edge/Nature.h
+++ b/source/blender/freestyle/intern/winged_edge/Nature.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/winged_edge/WEdge.cpp b/source/blender/freestyle/intern/winged_edge/WEdge.cpp
index 356b641a2549e9e874c2b3ecc18802866689be8e..8b9388caa866f2e2824a88e61251cf7adbe06e3f 100644
--- a/source/blender/freestyle/intern/winged_edge/WEdge.cpp
+++ b/source/blender/freestyle/intern/winged_edge/WEdge.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/winged_edge/WEdge.h b/source/blender/freestyle/intern/winged_edge/WEdge.h
index 92b8bc70aa8873028a5421cc7c1be0480cc705f0..b77381bd4e5d22e3cc3b10b9b2b29d0cadd2f4a4 100644
--- a/source/blender/freestyle/intern/winged_edge/WEdge.h
+++ b/source/blender/freestyle/intern/winged_edge/WEdge.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/winged_edge/WFillGrid.cpp b/source/blender/freestyle/intern/winged_edge/WFillGrid.cpp
index 9898255aaa7d493fd17a8bf0ba27f2f0f230c40b..01c98735acd2908a107e752f2bf5402c3094c039 100644
--- a/source/blender/freestyle/intern/winged_edge/WFillGrid.cpp
+++ b/source/blender/freestyle/intern/winged_edge/WFillGrid.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/winged_edge/WFillGrid.h b/source/blender/freestyle/intern/winged_edge/WFillGrid.h
index 9398a63333f93fd2b034e17fb894dca0d4091657..7e47422bb0c237d3434adc5660b2e3422e717509 100644
--- a/source/blender/freestyle/intern/winged_edge/WFillGrid.h
+++ b/source/blender/freestyle/intern/winged_edge/WFillGrid.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/winged_edge/WSFillGrid.cpp b/source/blender/freestyle/intern/winged_edge/WSFillGrid.cpp
index 3ca021ec2c6f3599e0f05d0328bf15e3e1f5dcac..f8cf463e43b3277485e9715630980fa4d8a70214 100644
--- a/source/blender/freestyle/intern/winged_edge/WSFillGrid.cpp
+++ b/source/blender/freestyle/intern/winged_edge/WSFillGrid.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/winged_edge/WSFillGrid.h b/source/blender/freestyle/intern/winged_edge/WSFillGrid.h
index d4e7f3ca76b7c974769295bee6c2d83a7d946781..3cd327e0fb23f93f6a4edb38143ce75b9505e654 100644
--- a/source/blender/freestyle/intern/winged_edge/WSFillGrid.h
+++ b/source/blender/freestyle/intern/winged_edge/WSFillGrid.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/winged_edge/WXEdge.cpp b/source/blender/freestyle/intern/winged_edge/WXEdge.cpp
index cef1a8f8f7787050bfa7c83cb8e71366f7772559..a56ac003703140719b8a4410639398f689b8d086 100644
--- a/source/blender/freestyle/intern/winged_edge/WXEdge.cpp
+++ b/source/blender/freestyle/intern/winged_edge/WXEdge.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/winged_edge/WXEdge.h b/source/blender/freestyle/intern/winged_edge/WXEdge.h
index 7ef2e7bcda2e70264a871bbffdde0ac960a32e5b..1a78e0427a04c6d9d4074ea54b36f011203162be 100644
--- a/source/blender/freestyle/intern/winged_edge/WXEdge.h
+++ b/source/blender/freestyle/intern/winged_edge/WXEdge.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/winged_edge/WXEdgeBuilder.cpp b/source/blender/freestyle/intern/winged_edge/WXEdgeBuilder.cpp
index 9be3da4420ba98ae9b2adeea5a5d0c00284a511c..3a5cdbc663c2a1af2f14ef0fa415ff267eadc2be 100644
--- a/source/blender/freestyle/intern/winged_edge/WXEdgeBuilder.cpp
+++ b/source/blender/freestyle/intern/winged_edge/WXEdgeBuilder.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/winged_edge/WXEdgeBuilder.h b/source/blender/freestyle/intern/winged_edge/WXEdgeBuilder.h
index efba18eb0841268ccb519f35af1e834fae421590..3675b22c5dca77d007437243c15474ec97bab29d 100644
--- a/source/blender/freestyle/intern/winged_edge/WXEdgeBuilder.h
+++ b/source/blender/freestyle/intern/winged_edge/WXEdgeBuilder.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/freestyle/intern/winged_edge/WingedEdgeBuilder.cpp b/source/blender/freestyle/intern/winged_edge/WingedEdgeBuilder.cpp
index d9d6a6675c20aaedfa954134f4a1ccca5d551b3b..0a3ab97717ba3164136660c328d97b8a20aabf5e 100644
--- a/source/blender/freestyle/intern/winged_edge/WingedEdgeBuilder.cpp
+++ b/source/blender/freestyle/intern/winged_edge/WingedEdgeBuilder.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup freestyle
diff --git a/source/blender/freestyle/intern/winged_edge/WingedEdgeBuilder.h b/source/blender/freestyle/intern/winged_edge/WingedEdgeBuilder.h
index 8cf86a421b73fb9a3b3947a8c486f9238005ec62..0c8c10f14cea9366077886ef342cbd0c02425a90 100644
--- a/source/blender/freestyle/intern/winged_edge/WingedEdgeBuilder.h
+++ b/source/blender/freestyle/intern/winged_edge/WingedEdgeBuilder.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/CMakeLists.txt b/source/blender/functions/CMakeLists.txt
index 9cfaf3eabea40040a4cb340f0df5189f7626fe3d..5543200301064f8fd7587d423d63bb29c71912bf 100644
--- a/source/blender/functions/CMakeLists.txt
+++ b/source/blender/functions/CMakeLists.txt
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/source/blender/functions/FN_cpp_type.hh b/source/blender/functions/FN_cpp_type.hh
index 7ddb5bf1f46a0f3c51f78859ada003c7e50d7f1d..420e2a8d9a979153fbb57680524062e121b93edb 100644
--- a/source/blender/functions/FN_cpp_type.hh
+++ b/source/blender/functions/FN_cpp_type.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_cpp_type_make.hh b/source/blender/functions/FN_cpp_type_make.hh
index 74dbcabf81ac0e3319bf2dde165ac25de72563e6..ac498e40fe3062f445951e12e62abefdc9834abe 100644
--- a/source/blender/functions/FN_cpp_type_make.hh
+++ b/source/blender/functions/FN_cpp_type_make.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_field.hh b/source/blender/functions/FN_field.hh
index e42feac1644e8bfccb67c870e325e1cdc06b4bcc..2cba833ce641a903f3321d764001a2272fbaaf92 100644
--- a/source/blender/functions/FN_field.hh
+++ b/source/blender/functions/FN_field.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_field_cpp_type.hh b/source/blender/functions/FN_field_cpp_type.hh
index 940faba6d7053ea9726dec34065ee34c7bc6a10a..24477246582a41f209a98faa6f8e1d341b447dcc 100644
--- a/source/blender/functions/FN_field_cpp_type.hh
+++ b/source/blender/functions/FN_field_cpp_type.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_generic_array.hh b/source/blender/functions/FN_generic_array.hh
index 401e496a66c0010a8420a390276ec39a8dc8d782..4bd0c38aa42ed996dc466a3751070949f5e232cd 100644
--- a/source/blender/functions/FN_generic_array.hh
+++ b/source/blender/functions/FN_generic_array.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_generic_pointer.hh b/source/blender/functions/FN_generic_pointer.hh
index c65c42f26c9f0b447099f9be1e81c50ce6e4e529..a1fb16b5ab27e53f6e028dfa00247b9d90936a67 100644
--- a/source/blender/functions/FN_generic_pointer.hh
+++ b/source/blender/functions/FN_generic_pointer.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_generic_span.hh b/source/blender/functions/FN_generic_span.hh
index 6f0147b7fb3db2aa575570cdc2c492497993f488..2d3bfa55787aae2aab057f25cd0d0ab7923d6f34 100644
--- a/source/blender/functions/FN_generic_span.hh
+++ b/source/blender/functions/FN_generic_span.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_generic_value_map.hh b/source/blender/functions/FN_generic_value_map.hh
index 33b827bf07336078271a9c157290fe0b21a3fe59..3807ada1c3c57f427985f7590fc3d641c4df350d 100644
--- a/source/blender/functions/FN_generic_value_map.hh
+++ b/source/blender/functions/FN_generic_value_map.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_generic_vector_array.hh b/source/blender/functions/FN_generic_vector_array.hh
index 57efa1b5ba9811dc68b2de8ac8b4fa503f3b9cae..d7416a0f5b958bf902a3931dbcdf5cf6507df80a 100644
--- a/source/blender/functions/FN_generic_vector_array.hh
+++ b/source/blender/functions/FN_generic_vector_array.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_generic_virtual_array.hh b/source/blender/functions/FN_generic_virtual_array.hh
index bcb710e3472d072e930a7d4ea5dd02186e3055b8..2655cd26bfec0eb2ad34a95e94bec852c3be2ba4 100644
--- a/source/blender/functions/FN_generic_virtual_array.hh
+++ b/source/blender/functions/FN_generic_virtual_array.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_generic_virtual_vector_array.hh b/source/blender/functions/FN_generic_virtual_vector_array.hh
index b89ca22fe7e592d60728ebf5392a3d1cae4637d8..1f40366da04cf6e57a63ad52d40d68164ef8926a 100644
--- a/source/blender/functions/FN_generic_virtual_vector_array.hh
+++ b/source/blender/functions/FN_generic_virtual_vector_array.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_multi_function.hh b/source/blender/functions/FN_multi_function.hh
index 1e36d87668af9049afbdbb777bfd31993dd95ac2..cca6955aeb071bc503c475e6c257b6bfd52efadc 100644
--- a/source/blender/functions/FN_multi_function.hh
+++ b/source/blender/functions/FN_multi_function.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_multi_function_builder.hh b/source/blender/functions/FN_multi_function_builder.hh
index eaf9e5ce70f43fde6157ba97277c0e30ef2c544a..7ba368d9a9d020b580466eb5983bf97b06b62785 100644
--- a/source/blender/functions/FN_multi_function_builder.hh
+++ b/source/blender/functions/FN_multi_function_builder.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_multi_function_context.hh b/source/blender/functions/FN_multi_function_context.hh
index 1d3ed726c4a4769fb08cc477ff96875fbd635bcc..af5efb4cf88d481b8836be020f86d98ab715f713 100644
--- a/source/blender/functions/FN_multi_function_context.hh
+++ b/source/blender/functions/FN_multi_function_context.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_multi_function_data_type.hh b/source/blender/functions/FN_multi_function_data_type.hh
index c3372151a1b329b7d2a3867b8352910b991e8bee..a0ded253d26f1ad9ce96433edcfdd2212775405f 100644
--- a/source/blender/functions/FN_multi_function_data_type.hh
+++ b/source/blender/functions/FN_multi_function_data_type.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_multi_function_param_type.hh b/source/blender/functions/FN_multi_function_param_type.hh
index 5b35cbe365b27d6227c206b2f2c551c2450f2e6e..69ac4c2382e53d53d55709738ae456f81a511452 100644
--- a/source/blender/functions/FN_multi_function_param_type.hh
+++ b/source/blender/functions/FN_multi_function_param_type.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_multi_function_params.hh b/source/blender/functions/FN_multi_function_params.hh
index f4ddc4f2881c33058f3aca11b04bb35ce8243f67..38736527771be1ae108da726f065b62f1e84d7ed 100644
--- a/source/blender/functions/FN_multi_function_params.hh
+++ b/source/blender/functions/FN_multi_function_params.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_multi_function_procedure.hh b/source/blender/functions/FN_multi_function_procedure.hh
index d73bc0892780eb9268f987f75dd56ead0eadb993..75a54992a4834b3276d740ab62ced764ce27710b 100644
--- a/source/blender/functions/FN_multi_function_procedure.hh
+++ b/source/blender/functions/FN_multi_function_procedure.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_multi_function_procedure_builder.hh b/source/blender/functions/FN_multi_function_procedure_builder.hh
index e416f7e500d38ab7702d23b2b07d457a922ad9f2..5292fa16cb01a0777b4d5cf0f46d1d8c0799e62e 100644
--- a/source/blender/functions/FN_multi_function_procedure_builder.hh
+++ b/source/blender/functions/FN_multi_function_procedure_builder.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_multi_function_procedure_executor.hh b/source/blender/functions/FN_multi_function_procedure_executor.hh
index 409a031e7ed7f4e4da81bd07c80d5158c323bb8f..2233ae7d675c331858729f663978f95cb2c95909 100644
--- a/source/blender/functions/FN_multi_function_procedure_executor.hh
+++ b/source/blender/functions/FN_multi_function_procedure_executor.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_multi_function_procedure_optimization.hh b/source/blender/functions/FN_multi_function_procedure_optimization.hh
index e5ffc12b241052c8f54f58765893348149da7a97..6e1e804c804c2c2fce2612c0f97782f5701c8b1c 100644
--- a/source/blender/functions/FN_multi_function_procedure_optimization.hh
+++ b/source/blender/functions/FN_multi_function_procedure_optimization.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/FN_multi_function_signature.hh b/source/blender/functions/FN_multi_function_signature.hh
index 3c991bc9c563030ebcebc9c6d837298de366d919..597f565984caf1e51577dac194a88d904042c447 100644
--- a/source/blender/functions/FN_multi_function_signature.hh
+++ b/source/blender/functions/FN_multi_function_signature.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/functions/intern/cpp_types.cc b/source/blender/functions/intern/cpp_types.cc
index 7f1eb8bc1a747e0466b1fa7eeab2f0194cac12a4..5606f66023752e16a0d34c30586d3543d40c2010 100644
--- a/source/blender/functions/intern/cpp_types.cc
+++ b/source/blender/functions/intern/cpp_types.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "FN_cpp_type_make.hh"
 #include "FN_field_cpp_type.hh"
diff --git a/source/blender/functions/intern/field.cc b/source/blender/functions/intern/field.cc
index fe3041b8602b24af06a53afc9ea8119407cdff0f..054a6b51adf44797c2775ec92f520a0dc88adbb7 100644
--- a/source/blender/functions/intern/field.cc
+++ b/source/blender/functions/intern/field.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_map.hh"
 #include "BLI_multi_value_map.hh"
diff --git a/source/blender/functions/intern/generic_vector_array.cc b/source/blender/functions/intern/generic_vector_array.cc
index 0d478007a5aeca75831b828cdfa10b1c241ab75e..b188b31b087051f45b8cf62c1ffc362e58f00521 100644
--- a/source/blender/functions/intern/generic_vector_array.cc
+++ b/source/blender/functions/intern/generic_vector_array.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "FN_generic_vector_array.hh"
 #include "FN_multi_function_params.hh"
diff --git a/source/blender/functions/intern/generic_virtual_array.cc b/source/blender/functions/intern/generic_virtual_array.cc
index b4180a885e743e34e87f4cd821f692e66ef3e70d..4644323bd1fb9352cb644b2f5571a1bb8e91f1fe 100644
--- a/source/blender/functions/intern/generic_virtual_array.cc
+++ b/source/blender/functions/intern/generic_virtual_array.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "FN_generic_virtual_array.hh"
 
diff --git a/source/blender/functions/intern/generic_virtual_vector_array.cc b/source/blender/functions/intern/generic_virtual_vector_array.cc
index e3c0d3109fa24d615fc68ac8d6ba72d5a54aa073..7dc728a446067a2c990103506bd3b578f162c1be 100644
--- a/source/blender/functions/intern/generic_virtual_vector_array.cc
+++ b/source/blender/functions/intern/generic_virtual_vector_array.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "FN_generic_virtual_vector_array.hh"
 
diff --git a/source/blender/functions/intern/multi_function.cc b/source/blender/functions/intern/multi_function.cc
index 837ccc4f4fb67d7534203cfc7db513afde0c5be4..6a9cb9c424c63fc0c5af94f6f43271fad1277860 100644
--- a/source/blender/functions/intern/multi_function.cc
+++ b/source/blender/functions/intern/multi_function.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "FN_multi_function.hh"
 
diff --git a/source/blender/functions/intern/multi_function_builder.cc b/source/blender/functions/intern/multi_function_builder.cc
index 24f9bbe0179df319fa3a7452b03c7d0a6ff36946..020d6ba01397cefc89818136aae65a97d8ad3b2e 100644
--- a/source/blender/functions/intern/multi_function_builder.cc
+++ b/source/blender/functions/intern/multi_function_builder.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "FN_multi_function_builder.hh"
 
diff --git a/source/blender/functions/intern/multi_function_params.cc b/source/blender/functions/intern/multi_function_params.cc
index 376c5b2deb721f28d6b4e5fb6e38e3ede39bda1f..23e0269b443da2c105778af0d3abf5f31e5476c9 100644
--- a/source/blender/functions/intern/multi_function_params.cc
+++ b/source/blender/functions/intern/multi_function_params.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "FN_multi_function_params.hh"
 
diff --git a/source/blender/functions/intern/multi_function_procedure.cc b/source/blender/functions/intern/multi_function_procedure.cc
index 804beb7d66f8a2bff92424518cf2f40fbd1d7f63..6655e0517233bb287d6325d3a0b0898ca2ef7b46 100644
--- a/source/blender/functions/intern/multi_function_procedure.cc
+++ b/source/blender/functions/intern/multi_function_procedure.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "FN_multi_function_procedure.hh"
 
diff --git a/source/blender/functions/intern/multi_function_procedure_builder.cc b/source/blender/functions/intern/multi_function_procedure_builder.cc
index d30e6c0e14a764c8efbf53b4842de94db5efb8a4..858172e774d4c91ba5ed662c5d57226a119dce20 100644
--- a/source/blender/functions/intern/multi_function_procedure_builder.cc
+++ b/source/blender/functions/intern/multi_function_procedure_builder.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "FN_multi_function_procedure_builder.hh"
 
diff --git a/source/blender/functions/intern/multi_function_procedure_executor.cc b/source/blender/functions/intern/multi_function_procedure_executor.cc
index 47643ed22eeac996fb0edbe6e6d6f92638708af9..7a0b74d80398595a801d5f60eb8372ae43a75ac2 100644
--- a/source/blender/functions/intern/multi_function_procedure_executor.cc
+++ b/source/blender/functions/intern/multi_function_procedure_executor.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "FN_multi_function_procedure_executor.hh"
 
diff --git a/source/blender/functions/intern/multi_function_procedure_optimization.cc b/source/blender/functions/intern/multi_function_procedure_optimization.cc
index 9ad428dcbd857e0f6cb7367ba354a3c6554fd860..70ea2c0bb1be952d1eb210feb62713c2b53ec4fe 100644
--- a/source/blender/functions/intern/multi_function_procedure_optimization.cc
+++ b/source/blender/functions/intern/multi_function_procedure_optimization.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "FN_multi_function_procedure_optimization.hh"
 
diff --git a/source/blender/functions/tests/FN_cpp_type_test.cc b/source/blender/functions/tests/FN_cpp_type_test.cc
index ffa3050f5a43865981f40178d9fe0fbddb8c54c9..6d9310874f5413c632ca74594673890860359b75 100644
--- a/source/blender/functions/tests/FN_cpp_type_test.cc
+++ b/source/blender/functions/tests/FN_cpp_type_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/functions/tests/FN_field_test.cc b/source/blender/functions/tests/FN_field_test.cc
index 4614f9eee58a68ae81cca02c65d38191fbd5b938..6417066b47beef944430f7ccdaf13c8ce52abd2a 100644
--- a/source/blender/functions/tests/FN_field_test.cc
+++ b/source/blender/functions/tests/FN_field_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/functions/tests/FN_generic_array_test.cc b/source/blender/functions/tests/FN_generic_array_test.cc
index 417ab479cca5a31258510300d5449eeaab79a6b2..5420a809ffc549fc7405edeff6f9eb35133c6be2 100644
--- a/source/blender/functions/tests/FN_generic_array_test.cc
+++ b/source/blender/functions/tests/FN_generic_array_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/functions/tests/FN_generic_span_test.cc b/source/blender/functions/tests/FN_generic_span_test.cc
index 81057ee9c4f8a3e2964adcd2609788f8241dc2f2..19b3ceaf44ebce67e31e4f287846071cdaa41e3c 100644
--- a/source/blender/functions/tests/FN_generic_span_test.cc
+++ b/source/blender/functions/tests/FN_generic_span_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/functions/tests/FN_generic_vector_array_test.cc b/source/blender/functions/tests/FN_generic_vector_array_test.cc
index 3e78aef484154053792b57cf40eafb64ec085d2d..6a83e6094b49d70c50e74178528e0c3f296c9d9f 100644
--- a/source/blender/functions/tests/FN_generic_vector_array_test.cc
+++ b/source/blender/functions/tests/FN_generic_vector_array_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/functions/tests/FN_multi_function_procedure_test.cc b/source/blender/functions/tests/FN_multi_function_procedure_test.cc
index e3de23550c56cc02ea9d12a77b8fd303af4cf601..a196d0396ec18c027e41b66167378e11dacff221 100644
--- a/source/blender/functions/tests/FN_multi_function_procedure_test.cc
+++ b/source/blender/functions/tests/FN_multi_function_procedure_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/functions/tests/FN_multi_function_test.cc b/source/blender/functions/tests/FN_multi_function_test.cc
index 20ca00cf598c6a1ca20825b4ef6b51c1eba4adf6..59d797605e7b39c4c14193daa42e2817026fe953 100644
--- a/source/blender/functions/tests/FN_multi_function_test.cc
+++ b/source/blender/functions/tests/FN_multi_function_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/functions/tests/FN_multi_function_test_common.hh b/source/blender/functions/tests/FN_multi_function_test_common.hh
index 2a64cc302fe29816c24d4f3a70b6186786d57586..a01a3fa27c64b21f935c0713a7f72f41a5496389 100644
--- a/source/blender/functions/tests/FN_multi_function_test_common.hh
+++ b/source/blender/functions/tests/FN_multi_function_test_common.hh
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "FN_multi_function.hh"
 
diff --git a/source/blender/geometry/CMakeLists.txt b/source/blender/geometry/CMakeLists.txt
index 110092e4f5feed36e37c2f64c86105812327b8c5..0aae19d2edad4748cb65aedd673f04de60042e91 100644
--- a/source/blender/geometry/CMakeLists.txt
+++ b/source/blender/geometry/CMakeLists.txt
@@ -1,21 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006 Blender Foundation
-# All rights reserved.
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/geometry/GEO_mesh_merge_by_distance.hh b/source/blender/geometry/GEO_mesh_merge_by_distance.hh
index 1d64680a02b583dcc6bd26a940f3dadc69cf5f21..7abb2d6b1a249cc94aa14c58747f026eb44e7bbf 100644
--- a/source/blender/geometry/GEO_mesh_merge_by_distance.hh
+++ b/source/blender/geometry/GEO_mesh_merge_by_distance.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/geometry/GEO_mesh_to_curve.hh b/source/blender/geometry/GEO_mesh_to_curve.hh
index fac40cc40d5a8100826c767a56ab75cfc1bf6279..a99ee9c7feefac55cf812a1c6371163d082b2f34 100644
--- a/source/blender/geometry/GEO_mesh_to_curve.hh
+++ b/source/blender/geometry/GEO_mesh_to_curve.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_index_mask.hh"
 
diff --git a/source/blender/geometry/GEO_point_merge_by_distance.hh b/source/blender/geometry/GEO_point_merge_by_distance.hh
index 6766f3c559d674cfbdc1d0317e52a1923342b111..1e977cf3bdc2220999d1e2a4370fd4b72b2abe55 100644
--- a/source/blender/geometry/GEO_point_merge_by_distance.hh
+++ b/source/blender/geometry/GEO_point_merge_by_distance.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_index_mask.hh"
 
diff --git a/source/blender/geometry/GEO_realize_instances.hh b/source/blender/geometry/GEO_realize_instances.hh
index ac16196667d3a9f93e34f21da92861b62c3a645b..dbfa19682ac6db77c71d1d58856e671b9542ab84 100644
--- a/source/blender/geometry/GEO_realize_instances.hh
+++ b/source/blender/geometry/GEO_realize_instances.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/geometry/intern/mesh_merge_by_distance.cc b/source/blender/geometry/intern/mesh_merge_by_distance.cc
index 1a07ebf31f6a165dd5aa19ef5013e3d96aad3631..0b47a5d3b8344919e585d4ca28c290e283b2b830 100644
--- a/source/blender/geometry/intern/mesh_merge_by_distance.cc
+++ b/source/blender/geometry/intern/mesh_merge_by_distance.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 #include "BLI_index_mask.hh"
diff --git a/source/blender/geometry/intern/mesh_to_curve_convert.cc b/source/blender/geometry/intern/mesh_to_curve_convert.cc
index 965c09984faf49149c797887ecf46ab54e4c9d1a..121a1b5de39bcbe9ab94de68dbd4eaa4779cb800 100644
--- a/source/blender/geometry/intern/mesh_to_curve_convert.cc
+++ b/source/blender/geometry/intern/mesh_to_curve_convert.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 #include "BLI_set.hh"
diff --git a/source/blender/geometry/intern/point_merge_by_distance.cc b/source/blender/geometry/intern/point_merge_by_distance.cc
index daa08a3bce602098674bb2090aa346d57f86808a..09ca83ef9766eab9e6936adbe9073f3783ba8199 100644
--- a/source/blender/geometry/intern/point_merge_by_distance.cc
+++ b/source/blender/geometry/intern/point_merge_by_distance.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_kdtree.h"
 #include "BLI_task.hh"
diff --git a/source/blender/geometry/intern/realize_instances.cc b/source/blender/geometry/intern/realize_instances.cc
index 18dd74cb688cc99f3ca1c27687cdd4ed7d22050a..c98bd9d6b74caf82061d253f433d8fdddf05bf78 100644
--- a/source/blender/geometry/intern/realize_instances.cc
+++ b/source/blender/geometry/intern/realize_instances.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "GEO_realize_instances.hh"
 
diff --git a/source/blender/gpencil_modifiers/CMakeLists.txt b/source/blender/gpencil_modifiers/CMakeLists.txt
index a3f468a20dcfba42ec89888b23e3112430a9893a..7ae9affcbecabb3acda8dfcf4483a4212b2aed5d 100644
--- a/source/blender/gpencil_modifiers/CMakeLists.txt
+++ b/source/blender/gpencil_modifiers/CMakeLists.txt
@@ -1,23 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2018, Blender Foundation
-# All rights reserved.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2018 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/gpencil_modifiers/MOD_gpencil_lineart.h b/source/blender/gpencil_modifiers/MOD_gpencil_lineart.h
index 95028ee959d4cbcbe5c51a265032d43fd560b242..713f070de77121cc856ec0975208f633a222110b 100644
--- a/source/blender/gpencil_modifiers/MOD_gpencil_lineart.h
+++ b/source/blender/gpencil_modifiers/MOD_gpencil_lineart.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/MOD_gpencil_modifiertypes.h b/source/blender/gpencil_modifiers/MOD_gpencil_modifiertypes.h
index 56cee115760605b7387e2080fca31d6bb1260334..ff280b9ca0d6907ead51379db07729a4e7314ca7 100644
--- a/source/blender/gpencil_modifiers/MOD_gpencil_modifiertypes.h
+++ b/source/blender/gpencil_modifiers/MOD_gpencil_modifiertypes.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencil_ui_common.c b/source/blender/gpencil_modifiers/intern/MOD_gpencil_ui_common.c
index fe78a7e7bcc68dd268c451f5cb3339c0cd33f50b..45c7bd5b4e072e47abfaefc77985941c7b1567e1 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencil_ui_common.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencil_ui_common.c
@@ -1,17 +1,4 @@
-/* This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencil_ui_common.h b/source/blender/gpencil_modifiers/intern/MOD_gpencil_ui_common.h
index 2cccd6e15ddf8086deb1040ed4cb64866c596b61..bbc0a3d26b6a683ba3b19ad43319d7f2b7ab6191 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencil_ui_common.h
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencil_ui_common.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencil_util.c b/source/blender/gpencil_modifiers/intern/MOD_gpencil_util.c
index c583a45a27df1a6bdc5ed4cf9913e3c77dbf262a..88ba6b6285d7a2a8aff02a17ed334a3b8b3533f6 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencil_util.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencil_util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencil_util.h b/source/blender/gpencil_modifiers/intern/MOD_gpencil_util.h
index 22893bdb184604a07da7862ef530e2dbcb8275d6..ce77ded421a7b7e7b503f0e3dd47f862bb435f71 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencil_util.h
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencil_util.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilarmature.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilarmature.c
index 08200b03466b9c23b2e2c7f06e234907eebb7e56..4ef486800297b9ecf65f418e672112ad97c31856 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilarmature.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilarmature.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilarray.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilarray.c
index 79d4f4dffec6adb7e9ad930cd2a7e183496d7aac..e036b814916c7b08e246613484e566b9a85edb9f 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilarray.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilarray.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilbuild.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilbuild.c
index 4e07827c940b5894aea0adc8a2fde75b9a43e639..b1447bcaccb15888f809c8653a7ba0c2627dee9b 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilbuild.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilbuild.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilcolor.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilcolor.c
index 0cb32b693bb91ccd165f60f7726ad31764370e79..5906b4aa0942f32f04257ced9fcb06595ea29435 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilcolor.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilcolor.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencildash.c b/source/blender/gpencil_modifiers/intern/MOD_gpencildash.c
index 6a4d0de5c80716b6d8131b0ba524d94bfd5d6003..44e5842c020fe38ce9028bfbcc730e47ce039635 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencildash.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencildash.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilhook.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilhook.c
index bad324ea1ca7a90e862bd9808624e26dba07f652..deac2b17498e70ac9e03ef2c8a0e35b5f6343e93 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilhook.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilhook.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencillattice.c b/source/blender/gpencil_modifiers/intern/MOD_gpencillattice.c
index 2934b89c747ecea1aafd93e182c52711793d14b0..96e649bf7a1efeb364572af0d9eac4cdffdf9d08 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencillattice.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencillattice.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencillength.c b/source/blender/gpencil_modifiers/intern/MOD_gpencillength.c
index af0067e06aa5868df4f0601645cd983d522d38c3..2d1396459114c2fd43720f0e41618cd229ea414f 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencillength.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencillength.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencillineart.c b/source/blender/gpencil_modifiers/intern/MOD_gpencillineart.c
index 6a3a27a6630fd5c39745285a47a5cf7ca0a45623..ba61ea148caf3a957a184c288d505ce0c908f4e1 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencillineart.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencillineart.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilmirror.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilmirror.c
index 1dc09cf1f744d8203cef0eea909f3d135a81ded9..6460a69a6cce35ab1ad6efe67cb5fe1edb77038a 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilmirror.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilmirror.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilmultiply.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilmultiply.c
index ac60e694618fd4841e3d9b86b6796f50e136b643..487ff956da6fbb1c12233e664ecd4ad66823113b 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilmultiply.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilmultiply.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilnoise.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilnoise.c
index ae862ce3eda46f7194c60712bccae77a9a82e4fa..179dcccdbe4ed3e0f74d8501cb9b66d67c230c48 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilnoise.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilnoise.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpenciloffset.c b/source/blender/gpencil_modifiers/intern/MOD_gpenciloffset.c
index 1a38b91a18babf7af5f4016a83a2f56352d23b33..3aaa032ef700e4c1c5d54a7879566fabd992fc0c 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpenciloffset.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpenciloffset.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilopacity.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilopacity.c
index 2e55369ea97d9c3ec90a3d90fd0bdbfcbabaff07..dc41679cfc7710e3013a8873cd47c922480f2acf 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilopacity.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilopacity.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilshrinkwrap.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilshrinkwrap.c
index 6990b41e6ce82e1fff762c11f171a13fdbc10ff8..8eaed56dc5825b26038774ce0349b92f23feef4a 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilshrinkwrap.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilshrinkwrap.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilsimplify.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilsimplify.c
index 18785705e50ee6fa14185a0f2e38f13137158785..3b7b82e308578e8f81bad3bc27fc339a750adf0b 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilsimplify.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilsimplify.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilsmooth.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilsmooth.c
index a63cbb536451510e527c9aa04cf8bd139f0dc8f1..274c19a6d95875e6f5d5a1d5086edc47828660de 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilsmooth.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilsmooth.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilsubdiv.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilsubdiv.c
index ee5ba7e92ca5b339c3cd33826f47dc601951d366..5e916a13f2c05ff81ee17a270460ba6832f7fe51 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilsubdiv.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilsubdiv.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpenciltexture.c b/source/blender/gpencil_modifiers/intern/MOD_gpenciltexture.c
index 742979088080b6b04319737d0359104354ddec05..a70bfadba14274274f60488cc62eb5d853d09a48 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpenciltexture.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpenciltexture.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilthick.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilthick.c
index 233992bbd315ae1eb51e5f83896993c12f2d2e9a..283d3f8a8942ec895383f4e368125e9eab9d90ce 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilthick.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilthick.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpenciltime.c b/source/blender/gpencil_modifiers/intern/MOD_gpenciltime.c
index e743a7244256ebb47c5579a0b5c4d33d140fd8f7..bf2e9a86817a0a6dbe19cc8d4c14fa473c302901 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpenciltime.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpenciltime.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpenciltint.c b/source/blender/gpencil_modifiers/intern/MOD_gpenciltint.c
index a055dff94496bca61cf97ee0c76aa92b5cbbd391..c594b0426438ee7e2237e56be8bb61e85685c594 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpenciltint.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpenciltint.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilweight_angle.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilweight_angle.c
index a833be080a97db6cb82500271ac3b4901464df5e..fe35c7036a9c4511166946e8a79e49a54f748d00 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilweight_angle.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilweight_angle.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilweight_proximity.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilweight_proximity.c
index 4079485de8d4866c5e886016800a7d433e54756a..1fd48b536bee7bf2e828c28fb874c347fdcf4ba1 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilweight_proximity.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilweight_proximity.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/gpencil_modifiers/intern/lineart/MOD_lineart.h b/source/blender/gpencil_modifiers/intern/lineart/MOD_lineart.h
index cb17d1d5f1a358deb9536e6bd66d45a9d5460e5a..2c7999699c747fdcf953641a348528646b695ae6 100644
--- a/source/blender/gpencil_modifiers/intern/lineart/MOD_lineart.h
+++ b/source/blender/gpencil_modifiers/intern/lineart/MOD_lineart.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/gpencil_modifiers/intern/lineart/lineart_chain.c b/source/blender/gpencil_modifiers/intern/lineart/lineart_chain.c
index 78ad895c93e7483debfd76addf597b26a1b59d30..e2cd1741e16cda42e29cb17b973d702f3310b99f 100644
--- a/source/blender/gpencil_modifiers/intern/lineart/lineart_chain.c
+++ b/source/blender/gpencil_modifiers/intern/lineart/lineart_chain.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c b/source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c
index a9ec136831d6aacd9f7e63a1b78fb1f81d05ad72..6177b9ac366baccdad8f849440fd329f34113b16 100644
--- a/source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c
+++ b/source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /* \file
  * \ingroup editors
diff --git a/source/blender/gpencil_modifiers/intern/lineart/lineart_intern.h b/source/blender/gpencil_modifiers/intern/lineart/lineart_intern.h
index 70ff4a373ddf814cb71f009eb69a5fe4ebd8bf76..508061d5d98ca118095b3fb2dd3eaf617a542aa6 100644
--- a/source/blender/gpencil_modifiers/intern/lineart/lineart_intern.h
+++ b/source/blender/gpencil_modifiers/intern/lineart/lineart_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/gpencil_modifiers/intern/lineart/lineart_ops.c b/source/blender/gpencil_modifiers/intern/lineart/lineart_ops.c
index c53404a87e2f62fa48259d73cd66f023e2a9a3aa..2b60fc458008b86937354a534e130609b864dc16 100644
--- a/source/blender/gpencil_modifiers/intern/lineart/lineart_ops.c
+++ b/source/blender/gpencil_modifiers/intern/lineart/lineart_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/gpencil_modifiers/intern/lineart/lineart_util.c b/source/blender/gpencil_modifiers/intern/lineart/lineart_util.c
index 47cca0ecd61b705f1e9ba904dd3b0f6054a836f6..93a3b33e713dbb4cb00a00bc35e2b85fe91ed7f8 100644
--- a/source/blender/gpencil_modifiers/intern/lineart/lineart_util.c
+++ b/source/blender/gpencil_modifiers/intern/lineart/lineart_util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup editors
diff --git a/source/blender/gpu/CMakeLists.txt b/source/blender/gpu/CMakeLists.txt
index cffea5e9dcccee444aacdfbd2e676cc0d8fe9bdc..e883a12a5b2d9c926bc0ada268cfcf8bbf4e1b5c 100644
--- a/source/blender/gpu/CMakeLists.txt
+++ b/source/blender/gpu/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 # WITH_OPENGL limits the visibility of the opengl headers to just GPU and bg_gpu,
 # to more easily highlight codepadths in other libraries that need to be refactored,
diff --git a/source/blender/gpu/GPU_batch.h b/source/blender/gpu/GPU_batch.h
index b193b45d65c25519db38a576fbd580fb038df3cc..803a5825c94482b33b92a01c4a26ea4b6cdd3c0b 100644
--- a/source/blender/gpu/GPU_batch.h
+++ b/source/blender/gpu/GPU_batch.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_batch_presets.h b/source/blender/gpu/GPU_batch_presets.h
index 1681db8126ae334306e7084e112e7ec8ea1133d8..5123c6bcd7da6969cf55439cc31285d1a67083d2 100644
--- a/source/blender/gpu/GPU_batch_presets.h
+++ b/source/blender/gpu/GPU_batch_presets.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_batch_utils.h b/source/blender/gpu/GPU_batch_utils.h
index 660ae0c8844524a66e533cd36b098540a4f9088c..7cdb05a835c3a1062b7a324ff5ef78682ed15527 100644
--- a/source/blender/gpu/GPU_batch_utils.h
+++ b/source/blender/gpu/GPU_batch_utils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_buffers.h b/source/blender/gpu/GPU_buffers.h
index 0a1d9c3b6d52fc995b1f476283df2b695449038a..610b0f384a20874a24a57ec648c11f33e7919e97 100644
--- a/source/blender/gpu/GPU_buffers.h
+++ b/source/blender/gpu/GPU_buffers.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_capabilities.h b/source/blender/gpu/GPU_capabilities.h
index 9cd1dbd37f129763180a7122d781d04aaf045123..672139aa40780a381bed64c9ad63cd040225c7bc 100644
--- a/source/blender/gpu/GPU_capabilities.h
+++ b/source/blender/gpu/GPU_capabilities.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_common.h b/source/blender/gpu/GPU_common.h
index c00bf581e8c4508ca681b6f57d4c048b5a8faa41..083551faa0d392abccdc5059cfb180afb6384ed5 100644
--- a/source/blender/gpu/GPU_common.h
+++ b/source/blender/gpu/GPU_common.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_compute.h b/source/blender/gpu/GPU_compute.h
index a048f72c0a06ca269ebe1f2e4162c302fc399baa..437b022330379629318bb3b88f7937af8cf6aa20 100644
--- a/source/blender/gpu/GPU_compute.h
+++ b/source/blender/gpu/GPU_compute.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_context.h b/source/blender/gpu/GPU_context.h
index 5e67441be2729f04ef083d867123a0093d467c6d..854339134566744925ffe4f201f85582c3d88261 100644
--- a/source/blender/gpu/GPU_context.h
+++ b/source/blender/gpu/GPU_context.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_debug.h b/source/blender/gpu/GPU_debug.h
index 18a35f9c71a9ae926f707beb84f50db4e97702a1..198dddc9f6ccbd5e83250d38a0e44327971a4472 100644
--- a/source/blender/gpu/GPU_debug.h
+++ b/source/blender/gpu/GPU_debug.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_drawlist.h b/source/blender/gpu/GPU_drawlist.h
index 485b90f48d4b5da9b083f3ead4966f084a66ce02..83968cc97e7714eba307e804499dd6b980abfc21 100644
--- a/source/blender/gpu/GPU_drawlist.h
+++ b/source/blender/gpu/GPU_drawlist.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_framebuffer.h b/source/blender/gpu/GPU_framebuffer.h
index b203c49a7f110a2099d1b969455f788140ba9f84..4436f7a5a7b3eab28f73b78b9f0785f677a6fa86 100644
--- a/source/blender/gpu/GPU_framebuffer.h
+++ b/source/blender/gpu/GPU_framebuffer.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_glew.h b/source/blender/gpu/GPU_glew.h
index e87a7054e5fa1f717614405ac629cb95654bf3f0..38209a0eb17e73c9a59fca1f8ff8d68f8ab03abd 100644
--- a/source/blender/gpu/GPU_glew.h
+++ b/source/blender/gpu/GPU_glew.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_immediate.h b/source/blender/gpu/GPU_immediate.h
index 1b288d19c4a5f19a114225723f542948b0056341..c313a18faea697c71d9e002765e94997b6055ef6 100644
--- a/source/blender/gpu/GPU_immediate.h
+++ b/source/blender/gpu/GPU_immediate.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_immediate_util.h b/source/blender/gpu/GPU_immediate_util.h
index cd45913158d427c99821df2f2c3e0115c7fc2cdd..924a735af79b32e55ceee5fa606a9a66902a9d51 100644
--- a/source/blender/gpu/GPU_immediate_util.h
+++ b/source/blender/gpu/GPU_immediate_util.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_index_buffer.h b/source/blender/gpu/GPU_index_buffer.h
index 0f83e590597448bca659d8e6b66c5a9fd1a222b2..bbb431cbc158cae4a364833eb5b81aae61865269 100644
--- a/source/blender/gpu/GPU_index_buffer.h
+++ b/source/blender/gpu/GPU_index_buffer.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_init_exit.h b/source/blender/gpu/GPU_init_exit.h
index 42c56940c4c58fd51011c4583601bab56d0465aa..9b7e7114c223f0f67ed61a6e4310ead0278a3e18 100644
--- a/source/blender/gpu/GPU_init_exit.h
+++ b/source/blender/gpu/GPU_init_exit.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_legacy_stubs.h b/source/blender/gpu/GPU_legacy_stubs.h
index 2e21b8799075dd868fd9c075f51b0e5b08975d1c..369347447f8da18f788a4d0020add12581018f97 100644
--- a/source/blender/gpu/GPU_legacy_stubs.h
+++ b/source/blender/gpu/GPU_legacy_stubs.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_material.h b/source/blender/gpu/GPU_material.h
index 3555b957d672b5d23658f5dc53b424167343fb95..9b63d0feb1e001627be5273d7929c76018017a45 100644
--- a/source/blender/gpu/GPU_material.h
+++ b/source/blender/gpu/GPU_material.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_matrix.h b/source/blender/gpu/GPU_matrix.h
index bfd4a14d1127d139efe771e65baf711c7e77c15c..2a9c4a89b2ad30f1ebde023c6a949a79483f2a44 100644
--- a/source/blender/gpu/GPU_matrix.h
+++ b/source/blender/gpu/GPU_matrix.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_platform.h b/source/blender/gpu/GPU_platform.h
index 0d80c0ed8af428554fd76f1103656d3ae6870462..d5a0fcfa92186e1ebf9b350339f780b573e13378 100644
--- a/source/blender/gpu/GPU_platform.h
+++ b/source/blender/gpu/GPU_platform.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_primitive.h b/source/blender/gpu/GPU_primitive.h
index f64a673d4619944df846d589b8b8cde525f405e7..66759cf22d7dc6d52a2e49489881266932ed134a 100644
--- a/source/blender/gpu/GPU_primitive.h
+++ b/source/blender/gpu/GPU_primitive.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_select.h b/source/blender/gpu/GPU_select.h
index 3076058c075ee74786d10a4557b4d1a70df59944..8fb81c8a3b4785c2c49d3e14575fbcdb9897f610 100644
--- a/source/blender/gpu/GPU_select.h
+++ b/source/blender/gpu/GPU_select.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_shader.h b/source/blender/gpu/GPU_shader.h
index 05c992274eb0b08f5f659ffb7a5af3cf4bbb25e5..ba4f70f7683c0cc6208b8756060e6a1489c4083c 100644
--- a/source/blender/gpu/GPU_shader.h
+++ b/source/blender/gpu/GPU_shader.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_shader_shared.h b/source/blender/gpu/GPU_shader_shared.h
index 636a8f53ba6cd3fabdfba43be7e285fde77820f5..2e6f1162cb95888e66c2327e25c2862092483de7 100644
--- a/source/blender/gpu/GPU_shader_shared.h
+++ b/source/blender/gpu/GPU_shader_shared.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_shader_shared_utils.h b/source/blender/gpu/GPU_shader_shared_utils.h
index 0d283fb1e6625be80d70ad113439b14bf7ccf033..474549d1f4245680c0261e50f2f90f10c88edcdd 100644
--- a/source/blender/gpu/GPU_shader_shared_utils.h
+++ b/source/blender/gpu/GPU_shader_shared_utils.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_state.h b/source/blender/gpu/GPU_state.h
index bd52b8321bb50df5bfbb6c5ef67bb8470ed6dfd4..86615145d1e636b5ae2ee69794a8baac7c595056 100644
--- a/source/blender/gpu/GPU_state.h
+++ b/source/blender/gpu/GPU_state.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_texture.h b/source/blender/gpu/GPU_texture.h
index 7812c7a7257657a1771258c711ec0998ea6d5feb..9472aed79a5156a8ab4c11eb68fc9882995cc85d 100644
--- a/source/blender/gpu/GPU_texture.h
+++ b/source/blender/gpu/GPU_texture.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_uniform_buffer.h b/source/blender/gpu/GPU_uniform_buffer.h
index c9ea1582ad42a08f5db4f7a518055d2fc9bf9614..c47be05a646daf761195389ccdd8fdcedd9eb7c6 100644
--- a/source/blender/gpu/GPU_uniform_buffer.h
+++ b/source/blender/gpu/GPU_uniform_buffer.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_vertex_buffer.h b/source/blender/gpu/GPU_vertex_buffer.h
index 43a8e7fc4cbb8cca718893034845a8ee56a88f64..fe6ed7eaf8762e2d0c5e96060b355cf20a5f0ed0 100644
--- a/source/blender/gpu/GPU_vertex_buffer.h
+++ b/source/blender/gpu/GPU_vertex_buffer.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_vertex_format.h b/source/blender/gpu/GPU_vertex_format.h
index 4af9901a88cac136711c7a1a08b2d494b27ba6fd..c6b0d5902fee00b8624e8b5640293be8355f558c 100644
--- a/source/blender/gpu/GPU_vertex_format.h
+++ b/source/blender/gpu/GPU_vertex_format.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/GPU_viewport.h b/source/blender/gpu/GPU_viewport.h
index 917b87efeaa6804eabde0b5b07bff25bb08d6ff0..daf817adbe8026e0ba4de0cd0660ba3c3c9d1fb5 100644
--- a/source/blender/gpu/GPU_viewport.h
+++ b/source/blender/gpu/GPU_viewport.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_backend.hh b/source/blender/gpu/intern/gpu_backend.hh
index 00645f34173f7c7b3487c174ed4df59d740dfbd1..2b6e485f152cc4ab61c03b2377f1397ecd6ef10d 100644
--- a/source/blender/gpu/intern/gpu_backend.hh
+++ b/source/blender/gpu/intern/gpu_backend.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_batch.cc b/source/blender/gpu/intern/gpu_batch.cc
index 2874dea775f993cb419e25347aa125d9e9f94993..44e95b1f5f59ac3cef38eff8467752c42edb1990 100644
--- a/source/blender/gpu/intern/gpu_batch.cc
+++ b/source/blender/gpu/intern/gpu_batch.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_batch_presets.c b/source/blender/gpu/intern/gpu_batch_presets.c
index b97378ad63856dccc44bbc7d5f74473a27b4c746..c1c884ed028b5aa3bf39f14bd344986701cf0004 100644
--- a/source/blender/gpu/intern/gpu_batch_presets.c
+++ b/source/blender/gpu/intern/gpu_batch_presets.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_batch_private.hh b/source/blender/gpu/intern/gpu_batch_private.hh
index 4c2f221e9b62c4f135a63e7f6e58427d6572ea99..23052f601d22a7c9ffc46f52c13c0dd25d157ac3 100644
--- a/source/blender/gpu/intern/gpu_batch_private.hh
+++ b/source/blender/gpu/intern/gpu_batch_private.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_batch_utils.c b/source/blender/gpu/intern/gpu_batch_utils.c
index a381df5974a4bb849559677fc94c701a2290fdff..43a47aab945aaebccc60873311c8d4314f77ec89 100644
--- a/source/blender/gpu/intern/gpu_batch_utils.c
+++ b/source/blender/gpu/intern/gpu_batch_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_buffers.c b/source/blender/gpu/intern/gpu_buffers.c
index dd53bea4ecafd87200b64f5c3f4a1d97afbf1bf7..b90dd9c2a8afedac5c042c5384c2623fd9d603fb 100644
--- a/source/blender/gpu/intern/gpu_buffers.c
+++ b/source/blender/gpu/intern/gpu_buffers.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_capabilities.cc b/source/blender/gpu/intern/gpu_capabilities.cc
index f12fd96d1ba306ec417bdc58eea07e4b133fd655..66e3a71317afaafe092eae9d98a1738b54dfe426 100644
--- a/source/blender/gpu/intern/gpu_capabilities.cc
+++ b/source/blender/gpu/intern/gpu_capabilities.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_capabilities_private.hh b/source/blender/gpu/intern/gpu_capabilities_private.hh
index 1f94b6715f18172316dc6e4b7bf455324328552d..458047ea6ad4f961f6165c2f7c3031054aa12c6c 100644
--- a/source/blender/gpu/intern/gpu_capabilities_private.hh
+++ b/source/blender/gpu/intern/gpu_capabilities_private.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_codegen.c b/source/blender/gpu/intern/gpu_codegen.c
index e1c6901470a4f0076207ceed0bb27ef8991dce4a..a96f157981f58b5334eafe96cd3a6207a7595e0f 100644
--- a/source/blender/gpu/intern/gpu_codegen.c
+++ b/source/blender/gpu/intern/gpu_codegen.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_codegen.h b/source/blender/gpu/intern/gpu_codegen.h
index f3d58a5581485d96c4dc2269892382295270ba95..0e99476d3ea2346f0848c5b7595ff2999e81f4c7 100644
--- a/source/blender/gpu/intern/gpu_codegen.h
+++ b/source/blender/gpu/intern/gpu_codegen.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_compute.cc b/source/blender/gpu/intern/gpu_compute.cc
index 7a8ae2acf9a6a5beb89d360149a34f2014f9de9d..e99455b756aa86799d0a5059c1bd941e0c75c412 100644
--- a/source/blender/gpu/intern/gpu_compute.cc
+++ b/source/blender/gpu/intern/gpu_compute.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_context.cc b/source/blender/gpu/intern/gpu_context.cc
index 98714269402dbf23aac7825ec3996f39f82aca0d..60e95e09a9981cf35bc37fa7215959ff335f521f 100644
--- a/source/blender/gpu/intern/gpu_context.cc
+++ b/source/blender/gpu/intern/gpu_context.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_context_private.hh b/source/blender/gpu/intern/gpu_context_private.hh
index d99555b3bf52708a7ffd0b2d707df8716703684f..af9791fde88309a61dcf641a2765317b5946589b 100644
--- a/source/blender/gpu/intern/gpu_context_private.hh
+++ b/source/blender/gpu/intern/gpu_context_private.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_debug.cc b/source/blender/gpu/intern/gpu_debug.cc
index 85cec67d2a778109fae29b43d54805f8b15902c0..c62a6416f9212901b26ccca0593c2c0109c1ae8d 100644
--- a/source/blender/gpu/intern/gpu_debug.cc
+++ b/source/blender/gpu/intern/gpu_debug.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_debug_private.hh b/source/blender/gpu/intern/gpu_debug_private.hh
index 11542a82dcb245eb97cad39a50539002cf412cd8..a412a2506330f9ba19fc7458e40e30ceca590f8f 100644
--- a/source/blender/gpu/intern/gpu_debug_private.hh
+++ b/source/blender/gpu/intern/gpu_debug_private.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_drawlist.cc b/source/blender/gpu/intern/gpu_drawlist.cc
index ecea4f7c5e4f47bbacdfcecc9f8f0bd4b5b12dfa..b5b8d2f90bc2bf9df4e995dea5693e055e48e2e9 100644
--- a/source/blender/gpu/intern/gpu_drawlist.cc
+++ b/source/blender/gpu/intern/gpu_drawlist.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_drawlist_private.hh b/source/blender/gpu/intern/gpu_drawlist_private.hh
index 393307e6ee5b43898ada469ee5b71b99bf4013cf..40ee7b829bf4a4cdee9b2b08d9382d1f31158abd 100644
--- a/source/blender/gpu/intern/gpu_drawlist_private.hh
+++ b/source/blender/gpu/intern/gpu_drawlist_private.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_framebuffer.cc b/source/blender/gpu/intern/gpu_framebuffer.cc
index 28f5b8b02b0fd0e4b451d8096f29cf52c6ba9f2c..fb3c9549f180490e487c1028a7cf1eba904fc471 100644
--- a/source/blender/gpu/intern/gpu_framebuffer.cc
+++ b/source/blender/gpu/intern/gpu_framebuffer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_framebuffer_private.hh b/source/blender/gpu/intern/gpu_framebuffer_private.hh
index e7505258d2aec47046ad53c04debfb1dd688f831..d218662d17f6086bbd32fada1aa6b0577264edc0 100644
--- a/source/blender/gpu/intern/gpu_framebuffer_private.hh
+++ b/source/blender/gpu/intern/gpu_framebuffer_private.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_immediate.cc b/source/blender/gpu/intern/gpu_immediate.cc
index e28776c87b3c1d95a4a0e37f6557bb25f4fb72bc..7dc1c739750c115dcf8d4e66e6ca4c8d5aeed8d4 100644
--- a/source/blender/gpu/intern/gpu_immediate.cc
+++ b/source/blender/gpu/intern/gpu_immediate.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_immediate_private.hh b/source/blender/gpu/intern/gpu_immediate_private.hh
index bc1ae403c5255b1425e25a5608a95da273ff9bc9..6c50fa01071acbe0a03b4e0b01e1a453fefe6d91 100644
--- a/source/blender/gpu/intern/gpu_immediate_private.hh
+++ b/source/blender/gpu/intern/gpu_immediate_private.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_immediate_util.c b/source/blender/gpu/intern/gpu_immediate_util.c
index 37a423d41a02e1304c5ed90c85f746027d154a7d..b2fd60a62e56a7a26fb4b7760f9870de1ae4e613 100644
--- a/source/blender/gpu/intern/gpu_immediate_util.c
+++ b/source/blender/gpu/intern/gpu_immediate_util.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_index_buffer.cc b/source/blender/gpu/intern/gpu_index_buffer.cc
index 895b2a8461bcf473af505f89a6b9370a79b5350d..54473b3a44d443d49779f084b3dec96a3085095a 100644
--- a/source/blender/gpu/intern/gpu_index_buffer.cc
+++ b/source/blender/gpu/intern/gpu_index_buffer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_index_buffer_private.hh b/source/blender/gpu/intern/gpu_index_buffer_private.hh
index 4bb46689727b7781434e1fbe781ca08deceb03de..9323a81d393b50a5abe297e0a389db6cac99e1af 100644
--- a/source/blender/gpu/intern/gpu_index_buffer_private.hh
+++ b/source/blender/gpu/intern/gpu_index_buffer_private.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_init_exit.c b/source/blender/gpu/intern/gpu_init_exit.c
index 5815fb10b0c6b2f3ced315d31a34b887db43f88a..7ccb0f89dc372495bb7626fab6c7c2e834c05527 100644
--- a/source/blender/gpu/intern/gpu_init_exit.c
+++ b/source/blender/gpu/intern/gpu_init_exit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_material.c b/source/blender/gpu/intern/gpu_material.c
index 11c61e4cf72c06fa7be6c57c5cb882ca294c49b1..49732240125f3152011214ad19c47b20eadd8cea 100644
--- a/source/blender/gpu/intern/gpu_material.c
+++ b/source/blender/gpu/intern/gpu_material.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_material_library.c b/source/blender/gpu/intern/gpu_material_library.c
index 712ab44adb3932b96f959d8643af49662db887d6..ca5c3d4bb45ae10e4ab50d4a5f206458be6bbef1 100644
--- a/source/blender/gpu/intern/gpu_material_library.c
+++ b/source/blender/gpu/intern/gpu_material_library.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_material_library.h b/source/blender/gpu/intern/gpu_material_library.h
index 7f9eeb8166a1a2b0e6bd50357689b34ba5117a75..96e1a265c723c1ff8f473ac04108a18f5ce6c634 100644
--- a/source/blender/gpu/intern/gpu_material_library.h
+++ b/source/blender/gpu/intern/gpu_material_library.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_matrix.cc b/source/blender/gpu/intern/gpu_matrix.cc
index cf3f7f5e778ece2e1f2457e4687bbc97d05e6221..94fd44f832b2d4af4738879c7496ca6ed0de84c4 100644
--- a/source/blender/gpu/intern/gpu_matrix.cc
+++ b/source/blender/gpu/intern/gpu_matrix.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_matrix_private.h b/source/blender/gpu/intern/gpu_matrix_private.h
index 3448b0a95aa9dc1244357baca2c7c397457ccda7..2889f5ed629a5392f8fae9afddd985ce478be5d2 100644
--- a/source/blender/gpu/intern/gpu_matrix_private.h
+++ b/source/blender/gpu/intern/gpu_matrix_private.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_node_graph.c b/source/blender/gpu/intern/gpu_node_graph.c
index e0d60aa5fda2af1c10d675b9d60a915ecdce6383..da4e49f02570caf518d9423a7ab833a2d8e76fd9 100644
--- a/source/blender/gpu/intern/gpu_node_graph.c
+++ b/source/blender/gpu/intern/gpu_node_graph.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_node_graph.h b/source/blender/gpu/intern/gpu_node_graph.h
index 8a112ac9c4df1f5f24df7c644c9d472d6972e259..5856001d54865aac1962290605f6f5d9c6054877 100644
--- a/source/blender/gpu/intern/gpu_node_graph.h
+++ b/source/blender/gpu/intern/gpu_node_graph.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_platform.cc b/source/blender/gpu/intern/gpu_platform.cc
index 34834a62268858bc70dde5b375eefd3453d0824f..969a3033c6f7ce791dbbd51355c28a28df20e195 100644
--- a/source/blender/gpu/intern/gpu_platform.cc
+++ b/source/blender/gpu/intern/gpu_platform.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_platform_private.hh b/source/blender/gpu/intern/gpu_platform_private.hh
index faae7c4858897371b566e56761312c9690502b03..a6c400ad31983d1628ef7d16e4ab8c8091b92a3a 100644
--- a/source/blender/gpu/intern/gpu_platform_private.hh
+++ b/source/blender/gpu/intern/gpu_platform_private.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_private.h b/source/blender/gpu/intern/gpu_private.h
index 310a432c10226be4b0432a4c51b4a4da03146e33..785e4e13748d56f72f99332487713d1af1fee38b 100644
--- a/source/blender/gpu/intern/gpu_private.h
+++ b/source/blender/gpu/intern/gpu_private.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_query.cc b/source/blender/gpu/intern/gpu_query.cc
index 610215fbe9152944fa474af4eeecc172d72f4216..c8d63953746aa6d97560a333a559546c0bcf5f63 100644
--- a/source/blender/gpu/intern/gpu_query.cc
+++ b/source/blender/gpu/intern/gpu_query.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_query.hh b/source/blender/gpu/intern/gpu_query.hh
index a004c355c8fe855720005402e5b0a7179d7668ee..e563d208c063cb39376b9a231a2be53ed9d5c6b7 100644
--- a/source/blender/gpu/intern/gpu_query.hh
+++ b/source/blender/gpu/intern/gpu_query.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_select.c b/source/blender/gpu/intern/gpu_select.c
index afef0e70ccc6e8f5630f1f2193ab7becaf7a016b..ac33c5d5ca8e9bc1edc449daa9a950f3781200cd 100644
--- a/source/blender/gpu/intern/gpu_select.c
+++ b/source/blender/gpu/intern/gpu_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_select_pick.c b/source/blender/gpu/intern/gpu_select_pick.c
index a5c0b2b1a146cc509e0c85dd5b1ce6eb363d7db0..840201c8c9789d94ed997c5b4435dbf2f0c22617 100644
--- a/source/blender/gpu/intern/gpu_select_pick.c
+++ b/source/blender/gpu/intern/gpu_select_pick.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_select_private.h b/source/blender/gpu/intern/gpu_select_private.h
index 0ec9f083c07ce9de02504534eb082a972bbe8d7a..1b9a69f0e071e26e21ea98cac84b41040c73daf8 100644
--- a/source/blender/gpu/intern/gpu_select_private.h
+++ b/source/blender/gpu/intern/gpu_select_private.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_select_sample_query.cc b/source/blender/gpu/intern/gpu_select_sample_query.cc
index 7559358aaca0fb160e3e18bf1db82cdbc41ea5a7..ab890b089350613e02fc030766f672d7c0b41c81 100644
--- a/source/blender/gpu/intern/gpu_select_sample_query.cc
+++ b/source/blender/gpu/intern/gpu_select_sample_query.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader.cc b/source/blender/gpu/intern/gpu_shader.cc
index 7db34917ad7985d848e8ddd4c3e980e154b0bd4e..ac8e98a4a219323726364cf639157cc504bd176b 100644
--- a/source/blender/gpu/intern/gpu_shader.cc
+++ b/source/blender/gpu/intern/gpu_shader.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader_builder.cc b/source/blender/gpu/intern/gpu_shader_builder.cc
index 334bdb2ec58e26247c01b9b357de830fb6a38d87..fc99b892554b4c65c38aa2fa03cea400f114e9fc 100644
--- a/source/blender/gpu/intern/gpu_shader_builder.cc
+++ b/source/blender/gpu/intern/gpu_shader_builder.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader_builder_stubs.cc b/source/blender/gpu/intern/gpu_shader_builder_stubs.cc
index 716d6e33a812c57f5638b98e81b989567f7103fa..95f9b031fe8f78a71e7eb7b0cf02013cc778474a 100644
--- a/source/blender/gpu/intern/gpu_shader_builder_stubs.cc
+++ b/source/blender/gpu/intern/gpu_shader_builder_stubs.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader_builtin.c b/source/blender/gpu/intern/gpu_shader_builtin.c
index 6b1163fdc783fa6591f343f96291767d07851b14..dfedb64ce619029195013aeb7a0724cb285ee66b 100644
--- a/source/blender/gpu/intern/gpu_shader_builtin.c
+++ b/source/blender/gpu/intern/gpu_shader_builtin.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader_create_info.cc b/source/blender/gpu/intern/gpu_shader_create_info.cc
index fe0304828c2b4ef11a20e78fceaa86da41f81005..ec4ff7bc399e08bf50d567b9e9f219cfc81f3b3f 100644
--- a/source/blender/gpu/intern/gpu_shader_create_info.cc
+++ b/source/blender/gpu/intern/gpu_shader_create_info.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader_create_info.hh b/source/blender/gpu/intern/gpu_shader_create_info.hh
index dafa741977ca448b36477b33b10ac10c0c7d283c..bd0187e2dc5f92d94a7fbc713d160255f7ab96e8 100644
--- a/source/blender/gpu/intern/gpu_shader_create_info.hh
+++ b/source/blender/gpu/intern/gpu_shader_create_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader_create_info_private.hh b/source/blender/gpu/intern/gpu_shader_create_info_private.hh
index 6d2878377adfdee2b00c77c2069a7c1b801e19d3..585ee859650e22e150df5b097305af8eb114d548 100644
--- a/source/blender/gpu/intern/gpu_shader_create_info_private.hh
+++ b/source/blender/gpu/intern/gpu_shader_create_info_private.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader_dependency.cc b/source/blender/gpu/intern/gpu_shader_dependency.cc
index 06ad0817bfbcf4f4f8ee210061d9df83638dfec7..8a842ef4d7c07c130659bc05d23591b495042809 100644
--- a/source/blender/gpu/intern/gpu_shader_dependency.cc
+++ b/source/blender/gpu/intern/gpu_shader_dependency.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader_dependency_private.h b/source/blender/gpu/intern/gpu_shader_dependency_private.h
index 13261dd20211f08a050e80d13cf55ac0850aa589..29ee70962d19318b79832e42a17452fd81364cef 100644
--- a/source/blender/gpu/intern/gpu_shader_dependency_private.h
+++ b/source/blender/gpu/intern/gpu_shader_dependency_private.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader_info_baked.cc b/source/blender/gpu/intern/gpu_shader_info_baked.cc
index 55115a6d45963de3ed529dd02bfbcf3d1814d2ad..418791a878fe08c52bc9581dc4e47eac057fff51 100644
--- a/source/blender/gpu/intern/gpu_shader_info_baked.cc
+++ b/source/blender/gpu/intern/gpu_shader_info_baked.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader_interface.cc b/source/blender/gpu/intern/gpu_shader_interface.cc
index 937f49ccaec456f16ee11b121d233602499aa266..ea138973c749de75748d6759df0e3756fd9021d6 100644
--- a/source/blender/gpu/intern/gpu_shader_interface.cc
+++ b/source/blender/gpu/intern/gpu_shader_interface.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader_interface.hh b/source/blender/gpu/intern/gpu_shader_interface.hh
index 514cfc01f09b81426f390b6bd29f9e5b0fb9fb79..ac78af38fccbad8271a9e03d84fa50d1af8cadd1 100644
--- a/source/blender/gpu/intern/gpu_shader_interface.hh
+++ b/source/blender/gpu/intern/gpu_shader_interface.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader_log.cc b/source/blender/gpu/intern/gpu_shader_log.cc
index c879e912c5dfbe951a519958b771638462a3a6af..d67dd56b45b2d4e1255934e1ea3538852cc4e552 100644
--- a/source/blender/gpu/intern/gpu_shader_log.cc
+++ b/source/blender/gpu/intern/gpu_shader_log.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_shader_private.hh b/source/blender/gpu/intern/gpu_shader_private.hh
index 93c33811ee0e00440c2a63cd3e2e2b949155ac91..4d318093c98d412f62b2945bd4315b79c0e80d08 100644
--- a/source/blender/gpu/intern/gpu_shader_private.hh
+++ b/source/blender/gpu/intern/gpu_shader_private.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_state.cc b/source/blender/gpu/intern/gpu_state.cc
index a43ddb09ff8949b9beee111adc7f64cffcdc9e36..885ec81f5c7a11f9cab7cd0809e06053a60c42b9 100644
--- a/source/blender/gpu/intern/gpu_state.cc
+++ b/source/blender/gpu/intern/gpu_state.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_state_private.hh b/source/blender/gpu/intern/gpu_state_private.hh
index 864b7d0446a246162f908182dc6c46dcec5783f2..d191d1b282f6d7a9d796739f1091c9dd7151cd8c 100644
--- a/source/blender/gpu/intern/gpu_state_private.hh
+++ b/source/blender/gpu/intern/gpu_state_private.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_texture.cc b/source/blender/gpu/intern/gpu_texture.cc
index 1b8b28bf04c37f89d5bb60ad518ebb201f5c99f5..19c7c5d78ffab8611625fe1ce905f1869aa159f1 100644
--- a/source/blender/gpu/intern/gpu_texture.cc
+++ b/source/blender/gpu/intern/gpu_texture.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_texture_private.hh b/source/blender/gpu/intern/gpu_texture_private.hh
index 3195e98da5e0857ad9bd101a471677e3da13c4a1..0fc3a1f354b00a07fd5b7ef17ebef03eecab2bdb 100644
--- a/source/blender/gpu/intern/gpu_texture_private.hh
+++ b/source/blender/gpu/intern/gpu_texture_private.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_uniform_buffer.cc b/source/blender/gpu/intern/gpu_uniform_buffer.cc
index 332875ba81fa0bb550ff6e9f1e9701c4c1032afa..42319498c07737cca703c4daa94d3a100e3b3af6 100644
--- a/source/blender/gpu/intern/gpu_uniform_buffer.cc
+++ b/source/blender/gpu/intern/gpu_uniform_buffer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_uniform_buffer_private.hh b/source/blender/gpu/intern/gpu_uniform_buffer_private.hh
index 018b85c865e8f03a913f831615c90eb6aa672a4d..6e3285b6fef6e985fa9efd484c8e6954338d20fa 100644
--- a/source/blender/gpu/intern/gpu_uniform_buffer_private.hh
+++ b/source/blender/gpu/intern/gpu_uniform_buffer_private.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_vertex_buffer.cc b/source/blender/gpu/intern/gpu_vertex_buffer.cc
index dba31f501f2d295303f673fe30ff785afbc64dde..2974547c8588bc2efc29e1aeb9d25d42a1722f6e 100644
--- a/source/blender/gpu/intern/gpu_vertex_buffer.cc
+++ b/source/blender/gpu/intern/gpu_vertex_buffer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_vertex_buffer_private.hh b/source/blender/gpu/intern/gpu_vertex_buffer_private.hh
index 97514b382b1a269e719ec219b05c1020d59e7a86..e5b70de9dfa11b631e443e1cf5929a940751d9cf 100644
--- a/source/blender/gpu/intern/gpu_vertex_buffer_private.hh
+++ b/source/blender/gpu/intern/gpu_vertex_buffer_private.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_vertex_format.cc b/source/blender/gpu/intern/gpu_vertex_format.cc
index ad45f2a4d7bb5293d8e85bd5887b7f4fbef23650..eedd660d0a938a39894cd2cadf0a52a2be410186 100644
--- a/source/blender/gpu/intern/gpu_vertex_format.cc
+++ b/source/blender/gpu/intern/gpu_vertex_format.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_vertex_format_private.h b/source/blender/gpu/intern/gpu_vertex_format_private.h
index c09be94e8ba77e8b3c96a53ccc34033520abcdd0..0f8a869f6dfb7c18416146b985a90b11533aef0d 100644
--- a/source/blender/gpu/intern/gpu_vertex_format_private.h
+++ b/source/blender/gpu/intern/gpu_vertex_format_private.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/intern/gpu_viewport.c b/source/blender/gpu/intern/gpu_viewport.c
index 7a20278e5aafea5735543cdf151f8c37b5cd5740..d910153e91264a4c4b90ffc36b42955054ed5f4e 100644
--- a/source/blender/gpu/intern/gpu_viewport.c
+++ b/source/blender/gpu/intern/gpu_viewport.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_backend.cc b/source/blender/gpu/opengl/gl_backend.cc
index 2ee7c0503f43d64086709cfb0a826de28201c3da..7a1674a5f014371cbe88477bb4d2cc054725b859 100644
--- a/source/blender/gpu/opengl/gl_backend.cc
+++ b/source/blender/gpu/opengl/gl_backend.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_backend.hh b/source/blender/gpu/opengl/gl_backend.hh
index abac9174d4a88085f2628073e87f0a07829c9798..9d637d7b6af571090dfa79f1074bc798587f8ea0 100644
--- a/source/blender/gpu/opengl/gl_backend.hh
+++ b/source/blender/gpu/opengl/gl_backend.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_batch.cc b/source/blender/gpu/opengl/gl_batch.cc
index 83cb0ddd053f196fc0e1129e15f2c1ccd71cd2fd..e738413879eefef1bd4c6a1b00adb5726225366a 100644
--- a/source/blender/gpu/opengl/gl_batch.cc
+++ b/source/blender/gpu/opengl/gl_batch.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_batch.hh b/source/blender/gpu/opengl/gl_batch.hh
index 4e6e25cdb0f88c72170ad24d88c5f3c47207e357..a25e495b3b1ec503de38dd660687fad91e7a6e59 100644
--- a/source/blender/gpu/opengl/gl_batch.hh
+++ b/source/blender/gpu/opengl/gl_batch.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_compute.cc b/source/blender/gpu/opengl/gl_compute.cc
index 14164ee181b195d9c1ed05b4497eac15a555e78e..4e178f74d8b3cbf1ec59c0fc6e24d29a743db3cc 100644
--- a/source/blender/gpu/opengl/gl_compute.cc
+++ b/source/blender/gpu/opengl/gl_compute.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_compute.hh b/source/blender/gpu/opengl/gl_compute.hh
index 2fd918ddd10ab1e96afa9bd58a8b3bfab3b38195..702089904e6d36586b8e02ae3fa3760f2d335ac7 100644
--- a/source/blender/gpu/opengl/gl_compute.hh
+++ b/source/blender/gpu/opengl/gl_compute.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_context.cc b/source/blender/gpu/opengl/gl_context.cc
index 09bc0aa6e58e8d33c2853813123a36c3f9160ec0..72892ffcd347b45119e9301e9599d8d295742a0e 100644
--- a/source/blender/gpu/opengl/gl_context.cc
+++ b/source/blender/gpu/opengl/gl_context.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_context.hh b/source/blender/gpu/opengl/gl_context.hh
index b7a74863ac4647b4e7eae50dc78f73e4128e8e1e..fe2ad0a4747612e5cae5e39bf8432c778fbf8503 100644
--- a/source/blender/gpu/opengl/gl_context.hh
+++ b/source/blender/gpu/opengl/gl_context.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_debug.cc b/source/blender/gpu/opengl/gl_debug.cc
index 95dea43636dda2af480fe9e575ad9ec52ebc29ea..ea373afac7deec0d0e9fd6d4c930f52fe20251f3 100644
--- a/source/blender/gpu/opengl/gl_debug.cc
+++ b/source/blender/gpu/opengl/gl_debug.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_debug.hh b/source/blender/gpu/opengl/gl_debug.hh
index 7917c05f94ba089662b34b1f141d7854d61cb0f9..e24b6f2bb238b9ac86db3a26412470fe564b442d 100644
--- a/source/blender/gpu/opengl/gl_debug.hh
+++ b/source/blender/gpu/opengl/gl_debug.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_debug_layer.cc b/source/blender/gpu/opengl/gl_debug_layer.cc
index b82bf10ebe96defd1378de7b943b4dd8a8cb8b0a..c02b6b2606810b4a7716eb3c6c2f7dc1f46c2d51 100644
--- a/source/blender/gpu/opengl/gl_debug_layer.cc
+++ b/source/blender/gpu/opengl/gl_debug_layer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_drawlist.cc b/source/blender/gpu/opengl/gl_drawlist.cc
index 8b000784fc875a8b3ccd1d9f6aafbf8c941703b2..2f87c859273f81b3a7ce2f6ec0fad30819fdf7d7 100644
--- a/source/blender/gpu/opengl/gl_drawlist.cc
+++ b/source/blender/gpu/opengl/gl_drawlist.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_drawlist.hh b/source/blender/gpu/opengl/gl_drawlist.hh
index bb7b89ca707cfafc3aa8741c465d72fbf9703836..0112ba7a6b2f20a7b58fa9e34a568213732e7a52 100644
--- a/source/blender/gpu/opengl/gl_drawlist.hh
+++ b/source/blender/gpu/opengl/gl_drawlist.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_framebuffer.cc b/source/blender/gpu/opengl/gl_framebuffer.cc
index 106a12bfefda483007783e7481e71965aaa10a91..57eeabba0a0e9800f38bdcc46f8ea42a1e48aee3 100644
--- a/source/blender/gpu/opengl/gl_framebuffer.cc
+++ b/source/blender/gpu/opengl/gl_framebuffer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_framebuffer.hh b/source/blender/gpu/opengl/gl_framebuffer.hh
index 00a7676dd3fc595145cf6770a7984176a9a9795c..3927ff27532f37e6c6de1a15d8ed86426a2ddfbe 100644
--- a/source/blender/gpu/opengl/gl_framebuffer.hh
+++ b/source/blender/gpu/opengl/gl_framebuffer.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_immediate.cc b/source/blender/gpu/opengl/gl_immediate.cc
index 2f7fa5a78fc630916a57b74275f3684234a1d046..cfedfe348f1941338a5388458773a60625e04967 100644
--- a/source/blender/gpu/opengl/gl_immediate.cc
+++ b/source/blender/gpu/opengl/gl_immediate.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_immediate.hh b/source/blender/gpu/opengl/gl_immediate.hh
index 235bc1254f2778cd2f20ff38d4317b98c7c1b7df..eb94dc20e219e054e87bf4c576ebc8e949b8f492 100644
--- a/source/blender/gpu/opengl/gl_immediate.hh
+++ b/source/blender/gpu/opengl/gl_immediate.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_index_buffer.cc b/source/blender/gpu/opengl/gl_index_buffer.cc
index 82bab460ae3dba03b02c3a6da50b721b81a712cd..8cedb831272e33a110ff0a2455ea1ed4cc20ad7d 100644
--- a/source/blender/gpu/opengl/gl_index_buffer.cc
+++ b/source/blender/gpu/opengl/gl_index_buffer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_index_buffer.hh b/source/blender/gpu/opengl/gl_index_buffer.hh
index aaec10d43b3c39d8dfeca7d6a152aa4a6e0ac84f..8a10884d48b74bdfd41585af57f2e1fc403ab21a 100644
--- a/source/blender/gpu/opengl/gl_index_buffer.hh
+++ b/source/blender/gpu/opengl/gl_index_buffer.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_primitive.hh b/source/blender/gpu/opengl/gl_primitive.hh
index 05a15017c66e05d080443ed62027d73ba2c06e28..2a8590e8b3edc5b088418594a7af1754c7ea222b 100644
--- a/source/blender/gpu/opengl/gl_primitive.hh
+++ b/source/blender/gpu/opengl/gl_primitive.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_query.cc b/source/blender/gpu/opengl/gl_query.cc
index da9770b4cc1ac9d340e6542decbffc78a13f2b9d..3195ec95ed2acd8135dd3c404b28e1c21a485eee 100644
--- a/source/blender/gpu/opengl/gl_query.cc
+++ b/source/blender/gpu/opengl/gl_query.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_query.hh b/source/blender/gpu/opengl/gl_query.hh
index 2848a7abb8b44d3bef3e1785befef38e193269b9..0dc4a6b8d51b7dff05058b2e2f2accc79ef11b2b 100644
--- a/source/blender/gpu/opengl/gl_query.hh
+++ b/source/blender/gpu/opengl/gl_query.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_shader.cc b/source/blender/gpu/opengl/gl_shader.cc
index 9da35a2bc97a02c9c5bed25bb77b0c892abc0d3d..f6b1f5184bd5abff0ddfbd89181f2baae9aa8674 100644
--- a/source/blender/gpu/opengl/gl_shader.cc
+++ b/source/blender/gpu/opengl/gl_shader.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_shader.hh b/source/blender/gpu/opengl/gl_shader.hh
index cc1c93142f8078213d2d10aad59a361ba714d1f4..86281d231a8f2dcc15a84886bc1247a08abfbd32 100644
--- a/source/blender/gpu/opengl/gl_shader.hh
+++ b/source/blender/gpu/opengl/gl_shader.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_shader_interface.cc b/source/blender/gpu/opengl/gl_shader_interface.cc
index 0a31f8dee7ffd934ab17765b7843b3a6efcfbb5e..65235cfa88b4dfd30c8e151e3507fa0cee30200a 100644
--- a/source/blender/gpu/opengl/gl_shader_interface.cc
+++ b/source/blender/gpu/opengl/gl_shader_interface.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_shader_interface.hh b/source/blender/gpu/opengl/gl_shader_interface.hh
index 94b6dd58316ddfd226614955c2457a3f51284a67..e3dce31758b18a4e20e4bb18fcd62cbe3e4e0a3d 100644
--- a/source/blender/gpu/opengl/gl_shader_interface.hh
+++ b/source/blender/gpu/opengl/gl_shader_interface.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_shader_log.cc b/source/blender/gpu/opengl/gl_shader_log.cc
index ec13bc44136011a9f362a69767e2ff2af6aa148e..1d922916e4cd345242dbe511ada59a7cc6db7c1a 100644
--- a/source/blender/gpu/opengl/gl_shader_log.cc
+++ b/source/blender/gpu/opengl/gl_shader_log.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_state.cc b/source/blender/gpu/opengl/gl_state.cc
index c6c013fcf3a6a77799ef4ad1eb107a7ee03cbc01..264e605798f476be0822f3a7cc760bfceaabad7a 100644
--- a/source/blender/gpu/opengl/gl_state.cc
+++ b/source/blender/gpu/opengl/gl_state.cc
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_state.hh b/source/blender/gpu/opengl/gl_state.hh
index 5985f1583f297179abb3b920460d63b54a90e29c..f29eefbca82a07da22efc6312f80c0415ae81436 100644
--- a/source/blender/gpu/opengl/gl_state.hh
+++ b/source/blender/gpu/opengl/gl_state.hh
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2020, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_texture.cc b/source/blender/gpu/opengl/gl_texture.cc
index d84d21d3021d9e5773984bc06e1109754041390c..22af2dd463fa52ff3c10722824dac58b32e9c634 100644
--- a/source/blender/gpu/opengl/gl_texture.cc
+++ b/source/blender/gpu/opengl/gl_texture.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_texture.hh b/source/blender/gpu/opengl/gl_texture.hh
index e786eaed38af4b53021d7e2752b450840c2dac30..07d3bb8c946828e43b38b0da6b9cca3307d11ee6 100644
--- a/source/blender/gpu/opengl/gl_texture.hh
+++ b/source/blender/gpu/opengl/gl_texture.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_uniform_buffer.cc b/source/blender/gpu/opengl/gl_uniform_buffer.cc
index ecb233f2e5a8d45899e62fc1af85a5b7c4b1d568..b8bcaf0047e7cd4d419fce74af049673644bc501 100644
--- a/source/blender/gpu/opengl/gl_uniform_buffer.cc
+++ b/source/blender/gpu/opengl/gl_uniform_buffer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_uniform_buffer.hh b/source/blender/gpu/opengl/gl_uniform_buffer.hh
index d7b9982dfb8edc9a4ca345b729f13324cc9046d4..8d945a8e7dc1e3c9fab3c9302754d123052563f5 100644
--- a/source/blender/gpu/opengl/gl_uniform_buffer.hh
+++ b/source/blender/gpu/opengl/gl_uniform_buffer.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_vertex_array.cc b/source/blender/gpu/opengl/gl_vertex_array.cc
index 282ede5ba9b4d5cd7e3b00424adf631bcb6f4de1..88b69eb5b62bdd7ef7a17a7976b26415b10cd11a 100644
--- a/source/blender/gpu/opengl/gl_vertex_array.cc
+++ b/source/blender/gpu/opengl/gl_vertex_array.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_vertex_array.hh b/source/blender/gpu/opengl/gl_vertex_array.hh
index b8edbf3a69160862478dea8cc6de9c5170d33278..d1d6c5604b52edebc83df7289f3ee501bd68a82f 100644
--- a/source/blender/gpu/opengl/gl_vertex_array.hh
+++ b/source/blender/gpu/opengl/gl_vertex_array.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_vertex_buffer.cc b/source/blender/gpu/opengl/gl_vertex_buffer.cc
index 469ac2cf8d604c7ef81fdc530f9e364223e1124e..a7a0c92431f74823168e17d7b6cdfd46fdef092e 100644
--- a/source/blender/gpu/opengl/gl_vertex_buffer.cc
+++ b/source/blender/gpu/opengl/gl_vertex_buffer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 by Mike Erwin.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 by Mike Erwin. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/opengl/gl_vertex_buffer.hh b/source/blender/gpu/opengl/gl_vertex_buffer.hh
index d347b6d56ca37f14ba10fe948a47f98027594600..4c29c17dcf7a94a8f189f073cf211126f6260360 100644
--- a/source/blender/gpu/opengl/gl_vertex_buffer.hh
+++ b/source/blender/gpu/opengl/gl_vertex_buffer.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_clip_planes_info.hh b/source/blender/gpu/shaders/infos/gpu_clip_planes_info.hh
index 81b3c5236289771ddd152e83e7f8fa723204e5a1..9c895b9de494bac644fcef8e140b1c8e6fcf2267 100644
--- a/source/blender/gpu/shaders/infos/gpu_clip_planes_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_clip_planes_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_interface_info.hh b/source/blender/gpu/shaders/infos/gpu_interface_info.hh
index d5ad333638fa1b972a6661f85d8acf7e3266d63c..d77c65e48a7daa6982dd7fd740d399c8f34955d3 100644
--- a/source/blender/gpu/shaders/infos/gpu_interface_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_interface_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_area_borders_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_area_borders_info.hh
index b5dce51fc1bacdc88a334062fbb620f42b317f4c..8595a10581765af69d8927bc659df8f7214794ef 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_area_borders_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_area_borders_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_checker_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_checker_info.hh
index b8dbca276ae7162b5d13ab25ce2897b1fd2bb20f..b277619b334dd0a75cd4c253e3ccc0638b5c6511 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_checker_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_checker_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_diag_stripes_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_diag_stripes_info.hh
index b52be8b328e7109cd200660994a4988f611b0527..a7a3e24deafb448d92586783512f82aa5c1fde81 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_diag_stripes_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_diag_stripes_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_flat_color_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_flat_color_info.hh
index 699b0a456f9cebe2e25e04ed1b15dcdda11936a4..24a06a37a4457566457d9b1c53b6c7b4623f7dd3 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_flat_color_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_flat_color_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_color_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_color_info.hh
index 8ac9f58d936b39fb131d103cfc4139775cd04c55..021bd9ebb95669c2898a053388c6a11d9f759152 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_color_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_color_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_desaturate_color_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_desaturate_color_info.hh
index 3e10c0e1651f7a50b120b3d912dfbbe75c3b684f..dc2977655a8fb668bb55ecfa86262e2a69432c1e 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_desaturate_color_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_desaturate_color_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_info.hh
index 989e38527c0f2013045ae73041a49f82c798de0c..06aad15c18a0b41637699874fd9d0c0af58c1dd2 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_overlays_merge_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_overlays_merge_info.hh
index d1a2a8f6ee78874b2e45713e5d6103bb34ffff7d..d3b70cb67f9677825646d95c037b4941a2a32d1c 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_overlays_merge_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_overlays_merge_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_overlays_stereo_merge_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_overlays_stereo_merge_info.hh
index d099d95e4b6fd24000222b7cb6923889e5000b53..4b2d59cc1597bdb99dba9807ed49ba2979f9680e 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_overlays_stereo_merge_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_overlays_stereo_merge_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_rect_color_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_rect_color_info.hh
index 9d5fb1525611e516172715560befc1993175e321..44f7b7fe1d838460ef3943ef6b6d5da6d929c03b 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_rect_color_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_rect_color_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_shuffle_color_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_shuffle_color_info.hh
index 93950b375092c1728d0908fc5847600d16adf054..6f602a40aecdfd2ef54d3cf062effb981969db49 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_image_shuffle_color_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_image_shuffle_color_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_line_dashed_uniform_color_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_line_dashed_uniform_color_info.hh
index afac24e6241142f9298caf230381b1e1d7babfa8..81ba8a26213e0b52112382fe4cb26a540164f424 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_line_dashed_uniform_color_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_line_dashed_uniform_color_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_nodelink_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_nodelink_info.hh
index 15451899d5d1e50ea4134ac196a4ff7bcbcaa458..6a419242d21fed0a8aa5a9d9ef015f3ba571cc93 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_nodelink_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_nodelink_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_point_uniform_size_uniform_color_aa_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_point_uniform_size_uniform_color_aa_info.hh
index 2a3d5698ba462b99a3ab67942b7168ef11bee09e..1b5c9beed489ea32406450310fb00ac7d50b44be 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_point_uniform_size_uniform_color_aa_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_point_uniform_size_uniform_color_aa_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_point_uniform_size_uniform_color_outline_aa_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_point_uniform_size_uniform_color_outline_aa_info.hh
index c7cc61e745be93eddf8bd939c2465805042a44af..a07b310ebd943187f12e20d28a07d95e4f79ffac 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_point_uniform_size_uniform_color_outline_aa_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_point_uniform_size_uniform_color_outline_aa_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_point_varying_size_varying_color_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_point_varying_size_varying_color_info.hh
index 38dddb4357e8d33291835d21a900f7b5e6561940..599be897e2104761921a039c55858d00360e7a82 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_point_varying_size_varying_color_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_point_varying_size_varying_color_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_smooth_color_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_smooth_color_info.hh
index 128be12a7d9a9df8c412ea5d6cde568cf83e7530..d6edeef0dfbe5602b62f46ca48cf31e8834c4bdb 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_smooth_color_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_smooth_color_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_uniform_color_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_uniform_color_info.hh
index 3dab6d367531078f2d4d2dc57a947c6789344d5c..56ccc3f105c9e091b45822b6b3c98770ec0d2bbd 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_2D_uniform_color_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_uniform_color_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_3D_depth_only_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_3D_depth_only_info.hh
index 63a4e6792150b6f3cb60ba6320b58a0969025c19..e74e7df1a096294447cd51a74d8ead91ba6012c1 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_3D_depth_only_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_3D_depth_only_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_3D_flat_color_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_3D_flat_color_info.hh
index 4628f8bd6c421811a29b2faca155cf564070172d..d23c8985a5da7500b2a2cef55e6fcfa3f3b76e98 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_3D_flat_color_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_3D_flat_color_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_3D_image_modulate_alpha_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_3D_image_modulate_alpha_info.hh
index d47df12950126a616c80fcd4f707519a6617c528..35ddaa5c71ca47ef994ef4708317dae1420b369c 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_3D_image_modulate_alpha_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_3D_image_modulate_alpha_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_3D_line_dashed_uniform_color_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_3D_line_dashed_uniform_color_info.hh
index 62c05d4677c4f85dbe5229d1638f2d58d093fd17..2987077ffbaefacff0662768b293cb4f0006a68a 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_3D_line_dashed_uniform_color_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_3D_line_dashed_uniform_color_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_3D_point_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_3D_point_info.hh
index d7b6806acc64d521614ee5a6df3497b19e01567e..1f9c0056f7ddfa1f79d2e1c4e98337d484170df9 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_3D_point_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_3D_point_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_3D_polyline_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_3D_polyline_info.hh
index d2961c10a1f78d327d7e6b15aa0d98f02c19fe3f..33294c8a0712f56fc7c3ebb13e76224dba7df549 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_3D_polyline_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_3D_polyline_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_3D_smooth_color_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_3D_smooth_color_info.hh
index 10f6e9a5b83eba88f7c61ec6b34cc3571e7611ea..a0c21a4ac7ca501fb8aa2e37022b4ecaa4f0dce1 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_3D_smooth_color_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_3D_smooth_color_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_3D_uniform_color_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_3D_uniform_color_info.hh
index e96ce8842f18626c3e266996db2ebb2d30af816f..096ae4d922c61e16084c8fed9a611ede09a0ca68 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_3D_uniform_color_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_3D_uniform_color_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_gpencil_stroke_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_gpencil_stroke_info.hh
index 460ef3f5acff60e008036fd37ff55207b3b89dbe..88a9cb33269ddf25e9650f8aafddac12106b23e8 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_gpencil_stroke_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_gpencil_stroke_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_instance_varying_color_varying_size_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_instance_varying_color_varying_size_info.hh
index 418ec0bef2d95540cb0e1651dceb1b7b9569fd3f..4885efc66c2a920a6c4cc14b1cbae6c35e545a03 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_instance_varying_color_varying_size_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_instance_varying_color_varying_size_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_keyframe_shape_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_keyframe_shape_info.hh
index bbd3b6a9f01ecdc2752f26965c3d0d22d3e6eca8..d112424cf3a8dbeacc4b65a355273f24ff0d429e 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_keyframe_shape_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_keyframe_shape_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_simple_lighting_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_simple_lighting_info.hh
index 8afa7d79f3fa5fc9d465e3ea3ea6be4bab725eae..fbc59fbd16f21c6d898ea4432a699b45ec81409d 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_simple_lighting_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_simple_lighting_info.hh
@@ -1,22 +1,6 @@
 
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_text_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_text_info.hh
index 9429db66f903ff66a90c4ae93992c96cebe82fb7..d204771190f4b8853f12b59427af29b758d62986 100644
--- a/source/blender/gpu/shaders/infos/gpu_shader_text_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_shader_text_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/shaders/infos/gpu_srgb_to_framebuffer_space_info.hh b/source/blender/gpu/shaders/infos/gpu_srgb_to_framebuffer_space_info.hh
index e9154bcaeda0b1afd702733e9e09876ab0d4d735..787f6c01fb183f00714e2064e50bb84b8875a027 100644
--- a/source/blender/gpu/shaders/infos/gpu_srgb_to_framebuffer_space_info.hh
+++ b/source/blender/gpu/shaders/infos/gpu_srgb_to_framebuffer_space_info.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup gpu
diff --git a/source/blender/gpu/tests/gpu_index_buffer_test.cc b/source/blender/gpu/tests/gpu_index_buffer_test.cc
index 9d767b58a7b54fd04918b140c5050a05d459799d..bce5fda906186629140341632c131a64a105c66e 100644
--- a/source/blender/gpu/tests/gpu_index_buffer_test.cc
+++ b/source/blender/gpu/tests/gpu_index_buffer_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/gpu/tests/gpu_shader_builtin_test.cc b/source/blender/gpu/tests/gpu_shader_builtin_test.cc
index 6d6a772f5fba6178a02e2a63cee07d92e49bbb71..7ff047418fcd560df586d58e2c71f9f6cef89fc3 100644
--- a/source/blender/gpu/tests/gpu_shader_builtin_test.cc
+++ b/source/blender/gpu/tests/gpu_shader_builtin_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "gpu_testing.hh"
 
diff --git a/source/blender/gpu/tests/gpu_shader_test.cc b/source/blender/gpu/tests/gpu_shader_test.cc
index dbe336af09700d06438de52a2675d0c51d722d0c..adb9b059fc67fa1b98f5429f7b1e4810c331c139 100644
--- a/source/blender/gpu/tests/gpu_shader_test.cc
+++ b/source/blender/gpu/tests/gpu_shader_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/gpu/tests/gpu_testing.cc b/source/blender/gpu/tests/gpu_testing.cc
index 7fd473069c26e2db05172326570b13a51e7b1da1..4e93e062b50a11e359e03862a93bea4db3111251 100644
--- a/source/blender/gpu/tests/gpu_testing.cc
+++ b/source/blender/gpu/tests/gpu_testing.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/source/blender/ikplugin/BIK_api.h b/source/blender/ikplugin/BIK_api.h
index 7ce0feb398943df5e109ce5b2c037256312e79ce..c35b32cb99ab30cb0b362dadb0efa86ebd920089 100644
--- a/source/blender/ikplugin/BIK_api.h
+++ b/source/blender/ikplugin/BIK_api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup ikplugin
diff --git a/source/blender/ikplugin/CMakeLists.txt b/source/blender/ikplugin/CMakeLists.txt
index 1a0bcbb9dbcc8e3ea901f83350bd077d1c54a10b..adf05254ef5c40b2c062440d7028ed4decc2bb48 100644
--- a/source/blender/ikplugin/CMakeLists.txt
+++ b/source/blender/ikplugin/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 remove_extra_strict_flags()
 
diff --git a/source/blender/ikplugin/intern/ikplugin_api.c b/source/blender/ikplugin/intern/ikplugin_api.c
index 8bbab832b6688f8eb69bfcd6856689fb3e1279dd..a03ab27254bf13502c021d67e7abe37431412125 100644
--- a/source/blender/ikplugin/intern/ikplugin_api.c
+++ b/source/blender/ikplugin/intern/ikplugin_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup ikplugin
diff --git a/source/blender/ikplugin/intern/ikplugin_api.h b/source/blender/ikplugin/intern/ikplugin_api.h
index 9d54cbec80c2c51fe04ac3b609af7fcc0a4a0efa..9af0802731d36372cd881ef6296498455dc36f07 100644
--- a/source/blender/ikplugin/intern/ikplugin_api.h
+++ b/source/blender/ikplugin/intern/ikplugin_api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup ikplugin
diff --git a/source/blender/ikplugin/intern/iksolver_plugin.c b/source/blender/ikplugin/intern/iksolver_plugin.c
index 5daad507efe2e64d9a9a3fd71224916754b31a27..d0cb7f00df88cb61c78d1388416b71908c22d8c6 100644
--- a/source/blender/ikplugin/intern/iksolver_plugin.c
+++ b/source/blender/ikplugin/intern/iksolver_plugin.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup ikplugin
diff --git a/source/blender/ikplugin/intern/iksolver_plugin.h b/source/blender/ikplugin/intern/iksolver_plugin.h
index 3cb6ac171d91d9205aa6f8ec46492e8b010849ed..45859c7cd5193c16c781b935fe1a75d33f5a266f 100644
--- a/source/blender/ikplugin/intern/iksolver_plugin.h
+++ b/source/blender/ikplugin/intern/iksolver_plugin.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup ikplugin
diff --git a/source/blender/ikplugin/intern/itasc_plugin.cpp b/source/blender/ikplugin/intern/itasc_plugin.cpp
index 102ad46a5f2c6a98d56236f23545528137604cab..6dcfd3d014eab7f80cccfa79e95da98b7dbd8bfe 100644
--- a/source/blender/ikplugin/intern/itasc_plugin.cpp
+++ b/source/blender/ikplugin/intern/itasc_plugin.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup ikplugin
diff --git a/source/blender/ikplugin/intern/itasc_plugin.h b/source/blender/ikplugin/intern/itasc_plugin.h
index cd4e210966e9852efba83c2c0130c712c07763b6..cef1a4d7b8ea8bc752f7d52b66ce5f0c0ed05b9a 100644
--- a/source/blender/ikplugin/intern/itasc_plugin.h
+++ b/source/blender/ikplugin/intern/itasc_plugin.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup ikplugin
diff --git a/source/blender/imbuf/CMakeLists.txt b/source/blender/imbuf/CMakeLists.txt
index 479f4f7e82f50471a3d6a0406f6c413bdd5ec58f..c97eead0159f8a8b7a79771516c854fb99eb3669 100644
--- a/source/blender/imbuf/CMakeLists.txt
+++ b/source/blender/imbuf/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/imbuf/IMB_colormanagement.h b/source/blender/imbuf/IMB_colormanagement.h
index 30f2f24447f6a24b8c98807d83b0d9a97e4270d5..785fa2b198a7d7a2b17f06aca7861a9d8e9f5c8c 100644
--- a/source/blender/imbuf/IMB_colormanagement.h
+++ b/source/blender/imbuf/IMB_colormanagement.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/imbuf/IMB_imbuf.h b/source/blender/imbuf/IMB_imbuf.h
index a557d7dc6d176b764b5a071f86770b79e674a877..23b9c85bd5b4a4abe06c892ca6477c68ffe01521 100644
--- a/source/blender/imbuf/IMB_imbuf.h
+++ b/source/blender/imbuf/IMB_imbuf.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/IMB_imbuf_types.h b/source/blender/imbuf/IMB_imbuf_types.h
index 58148743b7e1ff08976faeaea410dccdabd0e209..98b7cc6e87f033be9f654d0d60908acc9d3e840d 100644
--- a/source/blender/imbuf/IMB_imbuf_types.h
+++ b/source/blender/imbuf/IMB_imbuf_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/imbuf/IMB_metadata.h b/source/blender/imbuf/IMB_metadata.h
index 50982d08c3e8c1912fdfde7732eb8a4b2d5a0a3a..e5ac99bb502cbaf90cdb5e87865ea52f1d2b258c 100644
--- a/source/blender/imbuf/IMB_metadata.h
+++ b/source/blender/imbuf/IMB_metadata.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/IMB_moviecache.h b/source/blender/imbuf/IMB_moviecache.h
index 156a060c621eb6a3307d1fa2f9cde93a8fd8158a..9b39068569b93d69fd5faced7dd158188450c2ad 100644
--- a/source/blender/imbuf/IMB_moviecache.h
+++ b/source/blender/imbuf/IMB_moviecache.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/imbuf/IMB_thumbs.h b/source/blender/imbuf/IMB_thumbs.h
index 6a739002fb364f77f65d4d5c2dfe6f9119e02d15..70ff0ad83cd40bea4b306e0933c2425aafae3cc6 100644
--- a/source/blender/imbuf/IMB_thumbs.h
+++ b/source/blender/imbuf/IMB_thumbs.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/IMB_allocimbuf.h b/source/blender/imbuf/intern/IMB_allocimbuf.h
index c92d764a104566f3499bd65df1b8c2b495dcde0e..c4ee64c3c829a099447d7ab1400265446a84ad10 100644
--- a/source/blender/imbuf/intern/IMB_allocimbuf.h
+++ b/source/blender/imbuf/intern/IMB_allocimbuf.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/IMB_anim.h b/source/blender/imbuf/intern/IMB_anim.h
index c4e2ad9da7f0b07227ffbf4299e534d3766ed840..bad2081448fd26b406836ea3ff495eca78794d0a 100644
--- a/source/blender/imbuf/intern/IMB_anim.h
+++ b/source/blender/imbuf/intern/IMB_anim.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/IMB_colormanagement_intern.h b/source/blender/imbuf/intern/IMB_colormanagement_intern.h
index 89e648a7d6af4f02c3efa945fafbdddfaad36595..42941ace40b0f0f98fb85e3d897fd85f37fbf4d1 100644
--- a/source/blender/imbuf/intern/IMB_colormanagement_intern.h
+++ b/source/blender/imbuf/intern/IMB_colormanagement_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/imbuf/intern/IMB_filetype.h b/source/blender/imbuf/intern/IMB_filetype.h
index bf6aef3ecd3be750bb6de3823f54cae8cf06a548..035c5b10c6025fb0a1ec7a2bb4092fd67df5e7c5 100644
--- a/source/blender/imbuf/intern/IMB_filetype.h
+++ b/source/blender/imbuf/intern/IMB_filetype.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/IMB_filter.h b/source/blender/imbuf/intern/IMB_filter.h
index 434750e67368bb5633fd0a2751d591aa02d97d58..7855c5a52f49bfa36505ee887a12fece4040b103 100644
--- a/source/blender/imbuf/intern/IMB_filter.h
+++ b/source/blender/imbuf/intern/IMB_filter.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/IMB_indexer.h b/source/blender/imbuf/intern/IMB_indexer.h
index 6c66b11df4f742e6a5039bec8360e4905b7652c5..76106fce53a5d0fd2bb40ba3cd6b305f846dadae 100644
--- a/source/blender/imbuf/intern/IMB_indexer.h
+++ b/source/blender/imbuf/intern/IMB_indexer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/imbuf/intern/allocimbuf.c b/source/blender/imbuf/intern/allocimbuf.c
index 197d7e6b1d5543dca1430e60d2772bf324fbcef8..8b9ad94de0c271dbb663ebff4daad8798e22e250 100644
--- a/source/blender/imbuf/intern/allocimbuf.c
+++ b/source/blender/imbuf/intern/allocimbuf.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/anim_movie.c b/source/blender/imbuf/intern/anim_movie.c
index 38dbb9bfc476ede47c31ce75c2fa28e8ee6ded66..4125662d35fb58462f58be67ff0c0ab06074e9c2 100644
--- a/source/blender/imbuf/intern/anim_movie.c
+++ b/source/blender/imbuf/intern/anim_movie.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/bmp.c b/source/blender/imbuf/intern/bmp.c
index b44b12999bf7908f36d7dae97562d322c0f2f099..3ea65c57577b3f4546de0a753fbc7adf72b891d1 100644
--- a/source/blender/imbuf/intern/bmp.c
+++ b/source/blender/imbuf/intern/bmp.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/cache.c b/source/blender/imbuf/intern/cache.c
index ce11e1c3f809a16577521751ab9832663f329803..51f7dbdf41a788567423178b424427e0cfe92ffb 100644
--- a/source/blender/imbuf/intern/cache.c
+++ b/source/blender/imbuf/intern/cache.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/cineon/CMakeLists.txt b/source/blender/imbuf/intern/cineon/CMakeLists.txt
index d740b080c359ebf1928686e11f9b0ee5732a2cd9..d0a109d5730c727fc0a07db209d3aff713bfbf1b 100644
--- a/source/blender/imbuf/intern/cineon/CMakeLists.txt
+++ b/source/blender/imbuf/intern/cineon/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/imbuf/intern/cineon/cineon_dpx.c b/source/blender/imbuf/intern/cineon/cineon_dpx.c
index 91d7b9a8b9eaf2a84f1e07cfe3adcfbb581d926a..d1cd30cfe84b6dd3879cd7683c9153ccfc1ea8e0 100644
--- a/source/blender/imbuf/intern/cineon/cineon_dpx.c
+++ b/source/blender/imbuf/intern/cineon/cineon_dpx.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. */
 
 /** \file
  * \ingroup imbcineon
diff --git a/source/blender/imbuf/intern/cineon/cineonlib.c b/source/blender/imbuf/intern/cineon/cineonlib.c
index aa10d8949fefe21234a18456375d7833e4b8cc04..3bdfcb60292e14720d2d79fba0db8923bad055cf 100644
--- a/source/blender/imbuf/intern/cineon/cineonlib.c
+++ b/source/blender/imbuf/intern/cineon/cineonlib.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 1999-2001 David Hodson <hodsond@acm.org>
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 1999-2001 David Hodson <hodsond@acm.org>. */
 
 /** \file
  * \ingroup imbcineon
diff --git a/source/blender/imbuf/intern/cineon/cineonlib.h b/source/blender/imbuf/intern/cineon/cineonlib.h
index d71b6da9bc62e6ae7e13e80363787a4270f1dbbf..37b27d19539c2d223cb6f2ee566d0fbfcd45de3d 100644
--- a/source/blender/imbuf/intern/cineon/cineonlib.h
+++ b/source/blender/imbuf/intern/cineon/cineonlib.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 1999-2001 David Hodson <hodsond@acm.org>
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 1999-2001 David Hodson <hodsond@acm.org>. */
 
 /** \file
  * \ingroup imbcineon
diff --git a/source/blender/imbuf/intern/cineon/dpxlib.c b/source/blender/imbuf/intern/cineon/dpxlib.c
index 79374f87cc192affb79b943520160c876cb4b959..2d28a477c8a51850c19da84c8bd1bded86922c24 100644
--- a/source/blender/imbuf/intern/cineon/dpxlib.c
+++ b/source/blender/imbuf/intern/cineon/dpxlib.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 1999-2002 David Hodson <hodsond@acm.org>
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 1999-2002 David Hodson <hodsond@acm.org>. */
 
 /** \file
  * \ingroup imbcineon
diff --git a/source/blender/imbuf/intern/cineon/dpxlib.h b/source/blender/imbuf/intern/cineon/dpxlib.h
index 59fc634473701f9ea203ae5fb5075c66d5b55368..d8ed5dc6f67fe2bee638a9d0cf50424671b2761f 100644
--- a/source/blender/imbuf/intern/cineon/dpxlib.h
+++ b/source/blender/imbuf/intern/cineon/dpxlib.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 1999-2002 David Hodson <hodsond@acm.org>
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 1999-2002 David Hodson <hodsond@acm.org>. */
 
 /** \file
  * \ingroup imbcineon
diff --git a/source/blender/imbuf/intern/cineon/logImageCore.c b/source/blender/imbuf/intern/cineon/logImageCore.c
index 2852e8c6f73632937fa8336ec9856d131dd93102..36e12e073161cce988eccf043d63205ccfb57f9e 100644
--- a/source/blender/imbuf/intern/cineon/logImageCore.c
+++ b/source/blender/imbuf/intern/cineon/logImageCore.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 1999-2001 David Hodson <hodsond@acm.org>
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 1999-2001 David Hodson <hodsond@acm.org>. */
 
 /** \file
  * \ingroup imbcineon
diff --git a/source/blender/imbuf/intern/cineon/logImageCore.h b/source/blender/imbuf/intern/cineon/logImageCore.h
index 3e98780016e98592b715b9c51fe16ddacc98630a..6875dba3f87f22027b92719f1cb4221970b0e4eb 100644
--- a/source/blender/imbuf/intern/cineon/logImageCore.h
+++ b/source/blender/imbuf/intern/cineon/logImageCore.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 1999-2001 David Hodson <hodsond@acm.org>
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 1999-2001 David Hodson <hodsond@acm.org>. */
 
 /** \file
  * \ingroup imbcineon
diff --git a/source/blender/imbuf/intern/cineon/logmemfile.c b/source/blender/imbuf/intern/cineon/logmemfile.c
index b01710ba9629109715d59585ccf94486900a1b5d..f5bd87f96d19760882cc2e24b895a55887f1003c 100644
--- a/source/blender/imbuf/intern/cineon/logmemfile.c
+++ b/source/blender/imbuf/intern/cineon/logmemfile.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2006 Joseph Eagar <joeedh@gmail.com>
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Joseph Eagar <joeedh@gmail.com>. */
 
 /** \file
  * \ingroup imbcineon
diff --git a/source/blender/imbuf/intern/cineon/logmemfile.h b/source/blender/imbuf/intern/cineon/logmemfile.h
index db4cfc5785b2ca0a025a395010a5e7a28be32485..12fc4d1bee799e800ece3e10d7cc81ea9e3890fd 100644
--- a/source/blender/imbuf/intern/cineon/logmemfile.h
+++ b/source/blender/imbuf/intern/cineon/logmemfile.h
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2006 Joseph Eagar <joeedh@gmail.com>
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Joseph Eagar <joeedh@gmail.com>. */
 
 /** \file
  * \ingroup imbcineon
diff --git a/source/blender/imbuf/intern/colormanagement.c b/source/blender/imbuf/intern/colormanagement.c
index 6e9e5dd3ddbadaddcd0e1683ad57a68aca8e53c4..15046ea54e13e3aeb8089c996176e9b1d0e04569 100644
--- a/source/blender/imbuf/intern/colormanagement.c
+++ b/source/blender/imbuf/intern/colormanagement.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/colormanagement_inline.c b/source/blender/imbuf/intern/colormanagement_inline.c
index 6e57a8cc1b22e9f406860b5d62f3ca8411088773..411cf9af802dd648b99971e81659602301588d22 100644
--- a/source/blender/imbuf/intern/colormanagement_inline.c
+++ b/source/blender/imbuf/intern/colormanagement_inline.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/dds/BlockDXT.cpp b/source/blender/imbuf/intern/dds/BlockDXT.cpp
index e471b6834aeb59ec56f3300ea7e45796eb928f2c..4048a78e5cf5770350c3223c26aead05adc454cc 100644
--- a/source/blender/imbuf/intern/dds/BlockDXT.cpp
+++ b/source/blender/imbuf/intern/dds/BlockDXT.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/BlockDXT.h b/source/blender/imbuf/intern/dds/BlockDXT.h
index eb2d5f8726c2972aa8d4b5173e6988107b0c27fa..42c9b5d21ade5e10f0c18a0873f321e11441d8a1 100644
--- a/source/blender/imbuf/intern/dds/BlockDXT.h
+++ b/source/blender/imbuf/intern/dds/BlockDXT.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/CMakeLists.txt b/source/blender/imbuf/intern/dds/CMakeLists.txt
index 2ec1ea9eb366627a35fedfcb7b2aedb590d4b2d4..a4dda362dc18d599fa0c166c5c09181d45e07156 100644
--- a/source/blender/imbuf/intern/dds/CMakeLists.txt
+++ b/source/blender/imbuf/intern/dds/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/imbuf/intern/dds/Color.h b/source/blender/imbuf/intern/dds/Color.h
index 03d49391e590730f0143ee54ddf0420a0f15bf39..3918ef3105298a474e4d29ab2bbc619660c504b7 100644
--- a/source/blender/imbuf/intern/dds/Color.h
+++ b/source/blender/imbuf/intern/dds/Color.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/ColorBlock.cpp b/source/blender/imbuf/intern/dds/ColorBlock.cpp
index 0ab98c01f6f2e403c3c1a9bcbbec87b37fb01f29..4e36ff109f0aee3c72b3a5d0542958acb0b24edf 100644
--- a/source/blender/imbuf/intern/dds/ColorBlock.cpp
+++ b/source/blender/imbuf/intern/dds/ColorBlock.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/ColorBlock.h b/source/blender/imbuf/intern/dds/ColorBlock.h
index 1dee5c76c9e735dfd9a663ceeaff4c78c1ce6996..144babf5d92fbe48af1faa10f968751b0c5728c7 100644
--- a/source/blender/imbuf/intern/dds/ColorBlock.h
+++ b/source/blender/imbuf/intern/dds/ColorBlock.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/Common.h b/source/blender/imbuf/intern/dds/Common.h
index 90ec347a9ad88d3b807a6bff2e0c4b35770ffb89..bcc7b4f0278c589bfd59ee8697ca420ac68bdb3b 100644
--- a/source/blender/imbuf/intern/dds/Common.h
+++ b/source/blender/imbuf/intern/dds/Common.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/DirectDrawSurface.cpp b/source/blender/imbuf/intern/dds/DirectDrawSurface.cpp
index efa438c2af5695a603576bc250620a2f14ee4be6..9173b5a9d49784c71b8ecfbbf2d05a603522470c 100644
--- a/source/blender/imbuf/intern/dds/DirectDrawSurface.cpp
+++ b/source/blender/imbuf/intern/dds/DirectDrawSurface.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/DirectDrawSurface.h b/source/blender/imbuf/intern/dds/DirectDrawSurface.h
index 343a7367f91c6ffba36cc4658f4a98022935d5b5..b6e07976436544cfc125b33bd29367cc1133a4ec 100644
--- a/source/blender/imbuf/intern/dds/DirectDrawSurface.h
+++ b/source/blender/imbuf/intern/dds/DirectDrawSurface.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/FlipDXT.cpp b/source/blender/imbuf/intern/dds/FlipDXT.cpp
index a3cd8056290a6a2c521e621aedb6160344fa5b8c..fc978bff7889812b0a48d13cc2483b2347047fd1 100644
--- a/source/blender/imbuf/intern/dds/FlipDXT.cpp
+++ b/source/blender/imbuf/intern/dds/FlipDXT.cpp
@@ -1,35 +1,5 @@
-/*
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * * Redistributions of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- *
- * * Redistributions in binary form must reproduce the above
- *   copyright notice, this list of conditions and the following disclaimer
- *   in the documentation and/or other materials provided with the
- *   distribution.
- *
- * * Neither the name of Google Inc. nor the names of its
- *   contributors may be used to endorse or promote products derived from
- *   this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Copyright 2009, Google Inc.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2009 Google Inc. All rights reserved. */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/FlipDXT.h b/source/blender/imbuf/intern/dds/FlipDXT.h
index f9d3ce6112e6b5fbba9ca754e180b228a9d779f2..4db50576f776f1096c351ba7c23763f52a9dd3eb 100644
--- a/source/blender/imbuf/intern/dds/FlipDXT.h
+++ b/source/blender/imbuf/intern/dds/FlipDXT.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/imbuf/intern/dds/Image.cpp b/source/blender/imbuf/intern/dds/Image.cpp
index 9dfa5dd26214cda563f991f47996f24fbbdc0674..04ee92a053017fa1134a0dec3b9f295dbc498281 100644
--- a/source/blender/imbuf/intern/dds/Image.cpp
+++ b/source/blender/imbuf/intern/dds/Image.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/Image.h b/source/blender/imbuf/intern/dds/Image.h
index bc46b839952ca01f7ae5cea5f9d13b26d053a13a..719ff06cd1db2a9a465d5899dd4ade56a3cff5ca 100644
--- a/source/blender/imbuf/intern/dds/Image.h
+++ b/source/blender/imbuf/intern/dds/Image.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/PixelFormat.h b/source/blender/imbuf/intern/dds/PixelFormat.h
index 5c1d8e981a6f8516d6cfec9f808a59219ba31363..6078cc494039035ca8ed90bdb3479bff2b4c4994 100644
--- a/source/blender/imbuf/intern/dds/PixelFormat.h
+++ b/source/blender/imbuf/intern/dds/PixelFormat.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/Stream.cpp b/source/blender/imbuf/intern/dds/Stream.cpp
index 31bf2076ed1bafcc229f7b700cc086710b2db3db..bc7239dbd1b43a480aa98bd7a0a353d5522ba0e8 100644
--- a/source/blender/imbuf/intern/dds/Stream.cpp
+++ b/source/blender/imbuf/intern/dds/Stream.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/Stream.h b/source/blender/imbuf/intern/dds/Stream.h
index acf0345b3a616b6bbf96dd6109f5a2fd142acc6f..3e17b143629f3069240679dba686902e2faa07f2 100644
--- a/source/blender/imbuf/intern/dds/Stream.h
+++ b/source/blender/imbuf/intern/dds/Stream.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/dds_api.cpp b/source/blender/imbuf/intern/dds/dds_api.cpp
index f576209ff6289ce49018eceec9e92015a4450a26..e9a13573116e203060ec54776c6b0f578b6a1612 100644
--- a/source/blender/imbuf/intern/dds/dds_api.cpp
+++ b/source/blender/imbuf/intern/dds/dds_api.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/dds/dds_api.h b/source/blender/imbuf/intern/dds/dds_api.h
index 2d540f13a529377b494dd1daccf40e5f1ed7c029..75eace475b685e4bc5d3ed9cbf44f111d45d5aa0 100644
--- a/source/blender/imbuf/intern/dds/dds_api.h
+++ b/source/blender/imbuf/intern/dds/dds_api.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbdds
diff --git a/source/blender/imbuf/intern/divers.c b/source/blender/imbuf/intern/divers.c
index 37ed993f3f6478557d2284bbbaac2979ea20a7ac..0bf50937674f7de275efa215bbcd677be49718c3 100644
--- a/source/blender/imbuf/intern/divers.c
+++ b/source/blender/imbuf/intern/divers.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/filetype.c b/source/blender/imbuf/intern/filetype.c
index b1fe557a9bfde168aa41d00d3ab47b13954e0a33..60442f97885a9cf104d845a314abff0fcef2f01f 100644
--- a/source/blender/imbuf/intern/filetype.c
+++ b/source/blender/imbuf/intern/filetype.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/filter.c b/source/blender/imbuf/intern/filter.c
index c6f33664f8b872eb0212bf7fa02ed4add751e8a0..91c69d3abc819d182cf16aba7ca309b2d8b3478f 100644
--- a/source/blender/imbuf/intern/filter.c
+++ b/source/blender/imbuf/intern/filter.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/imageprocess.c b/source/blender/imbuf/intern/imageprocess.c
index 23c4c53d602f68b4fdf6565d09595ecbe9af976c..02a0c0189e0b06d573dbc3261d53d5721c75164f 100644
--- a/source/blender/imbuf/intern/imageprocess.c
+++ b/source/blender/imbuf/intern/imageprocess.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/imbuf.h b/source/blender/imbuf/intern/imbuf.h
index 309a911e9ca1ebc6a7656633497ae8a9e5ec943a..fba140935db3322dfda4260256ce543ac96ee26f 100644
--- a/source/blender/imbuf/intern/imbuf.h
+++ b/source/blender/imbuf/intern/imbuf.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/indexer.c b/source/blender/imbuf/intern/indexer.c
index 2aa61a3b5eefd82c07a8ec5da85ccbcceb753906..2cf82ca5c48e662b9ac155ffa19fc4ed8c5f2dd2 100644
--- a/source/blender/imbuf/intern/indexer.c
+++ b/source/blender/imbuf/intern/indexer.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Peter Schlaile <peter [at] schlaile [dot] de>. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/iris.c b/source/blender/imbuf/intern/iris.c
index 1c8548009e89cdf68ebc303fed78b058ec7478e5..86321d6432c65c339648bb4c84331e0d3a443e35 100644
--- a/source/blender/imbuf/intern/iris.c
+++ b/source/blender/imbuf/intern/iris.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/jp2.c b/source/blender/imbuf/intern/jp2.c
index 3af7367ef6ee31b43b6154ba9922e1a360256d54..97749585c16db75d718ca0bc0a07f0082bf177de 100644
--- a/source/blender/imbuf/intern/jp2.c
+++ b/source/blender/imbuf/intern/jp2.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/jpeg.c b/source/blender/imbuf/intern/jpeg.c
index c3a07d7face65d1e5d050503b68e257ec416d00a..6fb1fb521536ddae13f2aa93a32388e1d8c66ca4 100644
--- a/source/blender/imbuf/intern/jpeg.c
+++ b/source/blender/imbuf/intern/jpeg.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/metadata.c b/source/blender/imbuf/intern/metadata.c
index 5a01c42cf0065901c8f8a38a3531dbf7dd53b800..314ef866598882dc5f6398a05b2526dbfbe07b57 100644
--- a/source/blender/imbuf/intern/metadata.c
+++ b/source/blender/imbuf/intern/metadata.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/module.c b/source/blender/imbuf/intern/module.c
index 00c53c37bb1cdfb7d04d02f56fe88402f11898ea..b84604aed0e272d4c2982971aaaf3b0dcded84c9 100644
--- a/source/blender/imbuf/intern/module.c
+++ b/source/blender/imbuf/intern/module.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/moviecache.c b/source/blender/imbuf/intern/moviecache.c
index f290ab1a06041d3e8b6236f9710b3a44473c6154..8df033ce726a7134e727790d76a09864bf60dd97 100644
--- a/source/blender/imbuf/intern/moviecache.c
+++ b/source/blender/imbuf/intern/moviecache.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/imbuf/intern/oiio/CMakeLists.txt b/source/blender/imbuf/intern/oiio/CMakeLists.txt
index ee5848dec367fb29e0f9d7328e28c512b0ddf2a7..fc864f7f11a32ac0f90ab2fd9ec7dc7a96780ca0 100644
--- a/source/blender/imbuf/intern/oiio/CMakeLists.txt
+++ b/source/blender/imbuf/intern/oiio/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2013, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2013 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/imbuf/intern/oiio/openimageio_api.cpp b/source/blender/imbuf/intern/oiio/openimageio_api.cpp
index 22533b04b5834d9b56aa187253dbefc895050e3c..e887424d7b235024081aa164ddfb82ce3c9908fd 100644
--- a/source/blender/imbuf/intern/oiio/openimageio_api.cpp
+++ b/source/blender/imbuf/intern/oiio/openimageio_api.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup openimageio
diff --git a/source/blender/imbuf/intern/oiio/openimageio_api.h b/source/blender/imbuf/intern/oiio/openimageio_api.h
index 1201bd1b5e0c91f8ac4a0cc50b0cf0d471ca93a4..523c28ddeab65517953df91b9ef2d9565dcd7f86 100644
--- a/source/blender/imbuf/intern/oiio/openimageio_api.h
+++ b/source/blender/imbuf/intern/oiio/openimageio_api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup openimageio
diff --git a/source/blender/imbuf/intern/openexr/CMakeLists.txt b/source/blender/imbuf/intern/openexr/CMakeLists.txt
index a84f31c7025dca32e7d4458d8a4ec5fad2a02d53..08b17764d12cd84bb3c11cea53eb1371d632ff24 100644
--- a/source/blender/imbuf/intern/openexr/CMakeLists.txt
+++ b/source/blender/imbuf/intern/openexr/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/imbuf/intern/openexr/openexr_api.cpp b/source/blender/imbuf/intern/openexr/openexr_api.cpp
index ec8cf36dd492b699b105a1ab786cfd6b056f256c..a47009e3abd6863864afcec5a64ed080c8914d9d 100644
--- a/source/blender/imbuf/intern/openexr/openexr_api.cpp
+++ b/source/blender/imbuf/intern/openexr/openexr_api.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright by Gernot Ziegler <gz@lysator.liu.se>.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright by Gernot Ziegler <gz@lysator.liu.se>. All rights reserved. */
 
 /** \file
  * \ingroup openexr
diff --git a/source/blender/imbuf/intern/openexr/openexr_api.h b/source/blender/imbuf/intern/openexr/openexr_api.h
index 4321c95db3073238e6aa82d2c8869bd81aef51d4..c02b03dbe6c2de65947ae704a40ffd026ed99e14 100644
--- a/source/blender/imbuf/intern/openexr/openexr_api.h
+++ b/source/blender/imbuf/intern/openexr/openexr_api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup openexr
diff --git a/source/blender/imbuf/intern/openexr/openexr_multi.h b/source/blender/imbuf/intern/openexr/openexr_multi.h
index 0c3c4a4400f9b71c70a83dd39add722210d31f09..f5a2f983b18b23564825b1e2f788705e253b4527 100644
--- a/source/blender/imbuf/intern/openexr/openexr_multi.h
+++ b/source/blender/imbuf/intern/openexr/openexr_multi.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup openexr
diff --git a/source/blender/imbuf/intern/openexr/openexr_stub.cpp b/source/blender/imbuf/intern/openexr/openexr_stub.cpp
index 9b4d61786138144d31a5aec87928e4dc7e81087a..4ca4a8313b1eb346e744582bbe39a86a3dd36796 100644
--- a/source/blender/imbuf/intern/openexr/openexr_stub.cpp
+++ b/source/blender/imbuf/intern/openexr/openexr_stub.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright by Gernot Ziegler <gz@lysator.liu.se>.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright by Gernot Ziegler <gz@lysator.liu.se>. All rights reserved. */
 
 /** \file
  * \ingroup openexr
diff --git a/source/blender/imbuf/intern/png.c b/source/blender/imbuf/intern/png.c
index aaf56b1daa040962ff032530056c0d30672a563e..4d6dfac0ba01f1973e7037c5ede7f4481a39745c 100644
--- a/source/blender/imbuf/intern/png.c
+++ b/source/blender/imbuf/intern/png.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/radiance_hdr.c b/source/blender/imbuf/intern/radiance_hdr.c
index 616f4d1421c873514250d0d3e7e10e0b8384dfaa..3786f1c57540a5cb9900570c7d9289d9b0ea12c4 100644
--- a/source/blender/imbuf/intern/radiance_hdr.c
+++ b/source/blender/imbuf/intern/radiance_hdr.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/readimage.c b/source/blender/imbuf/intern/readimage.c
index ef0d547055d71149f76b7e4cda62bdd782dfc049..df41c0ca757c071cdb9a85885edef047887b33c9 100644
--- a/source/blender/imbuf/intern/readimage.c
+++ b/source/blender/imbuf/intern/readimage.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/rectop.c b/source/blender/imbuf/intern/rectop.c
index d368504dab0641208a7cb90251934d0f2ae7b838..cb1c5ea2e8d50c6158a2d32949ea70e19d9f8bcb 100644
--- a/source/blender/imbuf/intern/rectop.c
+++ b/source/blender/imbuf/intern/rectop.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/rotate.c b/source/blender/imbuf/intern/rotate.c
index 84161167ebc33c991394e46429d84d6fbd810a82..ac07ce855266f86979917cee7b66f217a33a9970 100644
--- a/source/blender/imbuf/intern/rotate.c
+++ b/source/blender/imbuf/intern/rotate.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/scaling.c b/source/blender/imbuf/intern/scaling.c
index a745555eec7db00e73f2741d8363aeaccfc6cfe3..afb0845c23b4fd8b989189ecc6862e25a7783e06 100644
--- a/source/blender/imbuf/intern/scaling.c
+++ b/source/blender/imbuf/intern/scaling.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/stereoimbuf.c b/source/blender/imbuf/intern/stereoimbuf.c
index dae2604802feb05fee4d800f3db4063be1c8ad55..c081ffb981a7c0d48fdc299b4c4064b1c9600abd 100644
--- a/source/blender/imbuf/intern/stereoimbuf.c
+++ b/source/blender/imbuf/intern/stereoimbuf.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/targa.c b/source/blender/imbuf/intern/targa.c
index 333e29e6d97385d8d5c7633bd099ab6575a5d415..7cf90cd12e293c8e578e3db18ad3086bb15b5361 100644
--- a/source/blender/imbuf/intern/targa.c
+++ b/source/blender/imbuf/intern/targa.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/thumbs.c b/source/blender/imbuf/intern/thumbs.c
index c39ce2e9a2a19006c15fe2850b0d66e4c35c5208..37734ebacb24590138906f3655a7c3e9998c9d5d 100644
--- a/source/blender/imbuf/intern/thumbs.c
+++ b/source/blender/imbuf/intern/thumbs.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/thumbs_blend.c b/source/blender/imbuf/intern/thumbs_blend.c
index 471c1bde3838e6bb6fb8eea1b4b3894ca3fa25f4..0269c904d8c37a7f29e184a091abd311d7d900d8 100644
--- a/source/blender/imbuf/intern/thumbs_blend.c
+++ b/source/blender/imbuf/intern/thumbs_blend.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/thumbs_font.c b/source/blender/imbuf/intern/thumbs_font.c
index b402dfb35e18a877b42c64c1854a9636455a66b9..7a1c4947c99e9ed190d9dffbd4eecfaffe9a095b 100644
--- a/source/blender/imbuf/intern/thumbs_font.c
+++ b/source/blender/imbuf/intern/thumbs_font.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/tiff.c b/source/blender/imbuf/intern/tiff.c
index 1d3589f00a62fd6813195466cb8857b89df96078..1372aa31713f90bbb71ae254a17d1466694c169c 100644
--- a/source/blender/imbuf/intern/tiff.c
+++ b/source/blender/imbuf/intern/tiff.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/transform.cc b/source/blender/imbuf/intern/transform.cc
index e1c451a8412f309aa466dc0fed872c19361488bc..edb47c8c7cec8fd011e4d969d187d30294b154ae 100644
--- a/source/blender/imbuf/intern/transform.cc
+++ b/source/blender/imbuf/intern/transform.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/util.c b/source/blender/imbuf/intern/util.c
index 10de80c1330f9322d744d2940921a0f0826b8f50..cabd6070400113e98d626cd9c7232c6f8cb1cba3 100644
--- a/source/blender/imbuf/intern/util.c
+++ b/source/blender/imbuf/intern/util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/util_gpu.c b/source/blender/imbuf/intern/util_gpu.c
index 4775d5154a3b54457374ca541c7a33514f1fa940..5abbc84b0ea81b44282c52385a9f98e967216027 100644
--- a/source/blender/imbuf/intern/util_gpu.c
+++ b/source/blender/imbuf/intern/util_gpu.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/imbuf/intern/writeimage.c b/source/blender/imbuf/intern/writeimage.c
index c2c87375363db1d978416ae53ef3c6bc23088791..56c9384a3308aa105577b6871496a3f525d18998 100644
--- a/source/blender/imbuf/intern/writeimage.c
+++ b/source/blender/imbuf/intern/writeimage.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup imbuf
diff --git a/source/blender/io/CMakeLists.txt b/source/blender/io/CMakeLists.txt
index b97b3ef97de43073ed4bdf1ffd151d665890551e..b5f2694c2dadbbdbb93d6c6b6ad773a137182e53 100644
--- a/source/blender/io/CMakeLists.txt
+++ b/source/blender/io/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2020, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2020 Blender Foundation. All rights reserved.
 
 add_subdirectory(common)
 add_subdirectory(wavefront_obj)
diff --git a/source/blender/io/alembic/ABC_alembic.h b/source/blender/io/alembic/ABC_alembic.h
index 18b0c91b67ce5cda05f5cd5b8ed685b3526e57c3..a9ade9b02fa7b7d67692eaf9e1a1a9010316ff3d 100644
--- a/source/blender/io/alembic/ABC_alembic.h
+++ b/source/blender/io/alembic/ABC_alembic.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/CMakeLists.txt b/source/blender/io/alembic/CMakeLists.txt
index d55f2382a9b82a84ab7a43e66c7824d6f3b8bf21..fd24ab7cbafd319f6b499d916711467d29c71741 100644
--- a/source/blender/io/alembic/CMakeLists.txt
+++ b/source/blender/io/alembic/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/io/alembic/exporter/abc_archive.cc b/source/blender/io/alembic/exporter/abc_archive.cc
index c070539fc9499d4051b9e9cc93a4bbcfafcbfdab..5eea729841e77b34c40838b9517633dcceb97604 100644
--- a/source/blender/io/alembic/exporter/abc_archive.cc
+++ b/source/blender/io/alembic/exporter/abc_archive.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "abc_archive.h"
 
diff --git a/source/blender/io/alembic/exporter/abc_archive.h b/source/blender/io/alembic/exporter/abc_archive.h
index 8e6e5e40663cfcb2456ef4450ce69f0a6d823600..60c94d319ba0e151cab602a0b85a8414fc00e23a 100644
--- a/source/blender/io/alembic/exporter/abc_archive.h
+++ b/source/blender/io/alembic/exporter/abc_archive.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup Alembic
diff --git a/source/blender/io/alembic/exporter/abc_custom_props.cc b/source/blender/io/alembic/exporter/abc_custom_props.cc
index e27a9012dab230935f3af35320fe4a33116c14c5..23a39ca2ee6456ecb06704afa991001b3e51d4d8 100644
--- a/source/blender/io/alembic/exporter/abc_custom_props.cc
+++ b/source/blender/io/alembic/exporter/abc_custom_props.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup Alembic
diff --git a/source/blender/io/alembic/exporter/abc_custom_props.h b/source/blender/io/alembic/exporter/abc_custom_props.h
index fcd47382d96a8fb761553e642329a1f7db6cd000..7d31cdd379efe3df9ffcd92983ca23ead74905e2 100644
--- a/source/blender/io/alembic/exporter/abc_custom_props.h
+++ b/source/blender/io/alembic/exporter/abc_custom_props.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup Alembic
diff --git a/source/blender/io/alembic/exporter/abc_export_capi.cc b/source/blender/io/alembic/exporter/abc_export_capi.cc
index efe04d64cc337739964a5cc5cfd6fb91ff90cc4f..53e8cee3a0a9dd6a456655847f83bfb7c0d2c30f 100644
--- a/source/blender/io/alembic/exporter/abc_export_capi.cc
+++ b/source/blender/io/alembic/exporter/abc_export_capi.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "ABC_alembic.h"
 #include "abc_archive.h"
diff --git a/source/blender/io/alembic/exporter/abc_hierarchy_iterator.cc b/source/blender/io/alembic/exporter/abc_hierarchy_iterator.cc
index 174b2abb90faa289f6666ffad4c65e6cf627ab99..4723b89de088488d5c52ba9e337b7ab942267d18 100644
--- a/source/blender/io/alembic/exporter/abc_hierarchy_iterator.cc
+++ b/source/blender/io/alembic/exporter/abc_hierarchy_iterator.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "abc_hierarchy_iterator.h"
 #include "abc_writer_abstract.h"
diff --git a/source/blender/io/alembic/exporter/abc_hierarchy_iterator.h b/source/blender/io/alembic/exporter/abc_hierarchy_iterator.h
index 2098b8b250562e9c11d48c4cac20e1173135bb34..24d3f319fbd1e31f048449064ddbcc998243a730 100644
--- a/source/blender/io/alembic/exporter/abc_hierarchy_iterator.h
+++ b/source/blender/io/alembic/exporter/abc_hierarchy_iterator.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include "ABC_alembic.h"
diff --git a/source/blender/io/alembic/exporter/abc_subdiv_disabler.cc b/source/blender/io/alembic/exporter/abc_subdiv_disabler.cc
index bd12f3c10d3879aa37ef3ec3f34b0c948bc8f7fa..514ce389e36364645999d958b185f7672a968223 100644
--- a/source/blender/io/alembic/exporter/abc_subdiv_disabler.cc
+++ b/source/blender/io/alembic/exporter/abc_subdiv_disabler.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #include "abc_subdiv_disabler.h"
 
 #include <cstdio>
diff --git a/source/blender/io/alembic/exporter/abc_subdiv_disabler.h b/source/blender/io/alembic/exporter/abc_subdiv_disabler.h
index c6541fd8afe18e243e4351d4bbcf57109a85317e..c3c8f47e0955fd06669ade8430bcb09c210bc790 100644
--- a/source/blender/io/alembic/exporter/abc_subdiv_disabler.h
+++ b/source/blender/io/alembic/exporter/abc_subdiv_disabler.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include <set>
diff --git a/source/blender/io/alembic/exporter/abc_writer_abstract.cc b/source/blender/io/alembic/exporter/abc_writer_abstract.cc
index 3665494c046f459d07976ad144415bf3953c4ef4..c277e5e2710215cfc6ae9a7bdf96c70af4c9eafe 100644
--- a/source/blender/io/alembic/exporter/abc_writer_abstract.cc
+++ b/source/blender/io/alembic/exporter/abc_writer_abstract.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #include "abc_writer_abstract.h"
 #include "abc_hierarchy_iterator.h"
 
diff --git a/source/blender/io/alembic/exporter/abc_writer_abstract.h b/source/blender/io/alembic/exporter/abc_writer_abstract.h
index d3500394555324f81eb5ecf195a36cbfd231e3e3..13aebccd02e067f6ba4b9d902c65b89e70d742e6 100644
--- a/source/blender/io/alembic/exporter/abc_writer_abstract.h
+++ b/source/blender/io/alembic/exporter/abc_writer_abstract.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include "IO_abstract_hierarchy_iterator.h"
diff --git a/source/blender/io/alembic/exporter/abc_writer_camera.cc b/source/blender/io/alembic/exporter/abc_writer_camera.cc
index 82a741699e4e0837fcb0af775eab32234aaa2b20..f1220660637d1288a1ff45cc10e2deb7b20e2e4d 100644
--- a/source/blender/io/alembic/exporter/abc_writer_camera.cc
+++ b/source/blender/io/alembic/exporter/abc_writer_camera.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/exporter/abc_writer_camera.h b/source/blender/io/alembic/exporter/abc_writer_camera.h
index 41885ed66d629311c1ea9c8d0330e6ee5c8318cd..a39951049fdb40903b7c5deb78decb1c43d3f26e 100644
--- a/source/blender/io/alembic/exporter/abc_writer_camera.h
+++ b/source/blender/io/alembic/exporter/abc_writer_camera.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/exporter/abc_writer_curves.cc b/source/blender/io/alembic/exporter/abc_writer_curves.cc
index 5e01609f930f3db2292c802aebbc2f9e96334329..95f296c2cf785394758e944ea7bd399894f72af2 100644
--- a/source/blender/io/alembic/exporter/abc_writer_curves.cc
+++ b/source/blender/io/alembic/exporter/abc_writer_curves.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Kévin Dietrich.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Kévin Dietrich. All rights reserved. */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/exporter/abc_writer_curves.h b/source/blender/io/alembic/exporter/abc_writer_curves.h
index e210363557c591ff45c55b6fe9104cfa094e0e65..30a6e4638540b446f3f56b77e004bec181730a90 100644
--- a/source/blender/io/alembic/exporter/abc_writer_curves.h
+++ b/source/blender/io/alembic/exporter/abc_writer_curves.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Kévin Dietrich.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Kévin Dietrich. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/exporter/abc_writer_hair.cc b/source/blender/io/alembic/exporter/abc_writer_hair.cc
index e8c156a2b8d7e235ceca1710861a4e5e7c7f2f52..bdf118575800333bd3feb8b5b640f71937f74c7d 100644
--- a/source/blender/io/alembic/exporter/abc_writer_hair.cc
+++ b/source/blender/io/alembic/exporter/abc_writer_hair.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/exporter/abc_writer_hair.h b/source/blender/io/alembic/exporter/abc_writer_hair.h
index 901fd70601f056ed72041a74b0a81e42462cd8c2..9707c61b3d0d2068c6ac93d58259ddc5ccbab2d4 100644
--- a/source/blender/io/alembic/exporter/abc_writer_hair.h
+++ b/source/blender/io/alembic/exporter/abc_writer_hair.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/exporter/abc_writer_instance.cc b/source/blender/io/alembic/exporter/abc_writer_instance.cc
index 353705f2c1d78f34f1a010c5e22c1d27da374c86..7db1423e9cbd186249a66837ad9adecd79bbb5e6 100644
--- a/source/blender/io/alembic/exporter/abc_writer_instance.cc
+++ b/source/blender/io/alembic/exporter/abc_writer_instance.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/exporter/abc_writer_instance.h b/source/blender/io/alembic/exporter/abc_writer_instance.h
index 1e4285d5e0210787f05792a3c854cbaaff1761e0..24d794877e0fdef12379a0fe277b472b718597b6 100644
--- a/source/blender/io/alembic/exporter/abc_writer_instance.h
+++ b/source/blender/io/alembic/exporter/abc_writer_instance.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/exporter/abc_writer_mball.cc b/source/blender/io/alembic/exporter/abc_writer_mball.cc
index ad78f8ce80251df9057595a7bea62ed67599616c..e1d4e9c749453eeb4f48a1f790ee0c5edcdf73c4 100644
--- a/source/blender/io/alembic/exporter/abc_writer_mball.cc
+++ b/source/blender/io/alembic/exporter/abc_writer_mball.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/exporter/abc_writer_mball.h b/source/blender/io/alembic/exporter/abc_writer_mball.h
index f96daa6d84b732441d2087ac5c919843b924ed51..737a8db19191f86da745b7463e5cf1a20a5fbe00 100644
--- a/source/blender/io/alembic/exporter/abc_writer_mball.h
+++ b/source/blender/io/alembic/exporter/abc_writer_mball.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/exporter/abc_writer_mesh.cc b/source/blender/io/alembic/exporter/abc_writer_mesh.cc
index 6ab4b06fba61340221ca27ff21c5e017a833caca..67e9846030a1565379e01c293f5d278e72c5d970 100644
--- a/source/blender/io/alembic/exporter/abc_writer_mesh.cc
+++ b/source/blender/io/alembic/exporter/abc_writer_mesh.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/exporter/abc_writer_mesh.h b/source/blender/io/alembic/exporter/abc_writer_mesh.h
index fb8a01a3bbf395b3af15a708ff14062a797884ab..a5d1a0e6613f72a7f18a0529736888d984e8bbfe 100644
--- a/source/blender/io/alembic/exporter/abc_writer_mesh.h
+++ b/source/blender/io/alembic/exporter/abc_writer_mesh.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/exporter/abc_writer_nurbs.cc b/source/blender/io/alembic/exporter/abc_writer_nurbs.cc
index ce451eb1428e86e81070dc0142fa37e23b90d7b1..5e307d59ed4ccc0c5c11009e0945ae181a3a7837 100644
--- a/source/blender/io/alembic/exporter/abc_writer_nurbs.cc
+++ b/source/blender/io/alembic/exporter/abc_writer_nurbs.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/exporter/abc_writer_nurbs.h b/source/blender/io/alembic/exporter/abc_writer_nurbs.h
index 0f206d34682220645d573f701fe2fc0ed7027fed..9b1d802a215eb3a53cc1c64f2a7c16b35d8faf76 100644
--- a/source/blender/io/alembic/exporter/abc_writer_nurbs.h
+++ b/source/blender/io/alembic/exporter/abc_writer_nurbs.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/exporter/abc_writer_points.cc b/source/blender/io/alembic/exporter/abc_writer_points.cc
index 2db9ad4ffab7fefc6f7b6b70c87fba4c37c2ec65..29370978b54f1f373626b42c67926dc7e5387d3b 100644
--- a/source/blender/io/alembic/exporter/abc_writer_points.cc
+++ b/source/blender/io/alembic/exporter/abc_writer_points.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Kévin Dietrich.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Kévin Dietrich. All rights reserved. */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/exporter/abc_writer_points.h b/source/blender/io/alembic/exporter/abc_writer_points.h
index 0447c41db3ea0dc4a1ca1abc9f1854c318065e4b..9823ccd56f5cbf389491b783b6366927f0ce0f72 100644
--- a/source/blender/io/alembic/exporter/abc_writer_points.h
+++ b/source/blender/io/alembic/exporter/abc_writer_points.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Kévin Dietrich.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Kévin Dietrich. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/exporter/abc_writer_transform.cc b/source/blender/io/alembic/exporter/abc_writer_transform.cc
index eff042d036d91bacce02d79cf9041b3e23c49cd3..c881a6f8831accc2b83e32f3055dafaf16b3221b 100644
--- a/source/blender/io/alembic/exporter/abc_writer_transform.cc
+++ b/source/blender/io/alembic/exporter/abc_writer_transform.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/exporter/abc_writer_transform.h b/source/blender/io/alembic/exporter/abc_writer_transform.h
index 4542b9de5061f24a94aafb7951b92fed5953ed10..726c07f1a80b0e7215171ff2c51f1defd31d1e2c 100644
--- a/source/blender/io/alembic/exporter/abc_writer_transform.h
+++ b/source/blender/io/alembic/exporter/abc_writer_transform.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/intern/abc_axis_conversion.cc b/source/blender/io/alembic/intern/abc_axis_conversion.cc
index 78ea7166fafc04c76921a5e55a40daf71eccd42c..00e5890e9d3b3dd4284ff20d2ffc664dea05e941 100644
--- a/source/blender/io/alembic/intern/abc_axis_conversion.cc
+++ b/source/blender/io/alembic/intern/abc_axis_conversion.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup Alembic
diff --git a/source/blender/io/alembic/intern/abc_axis_conversion.h b/source/blender/io/alembic/intern/abc_axis_conversion.h
index 21b95ec717ec94d6d8213b8b7ec4a609a0cca6e6..f03f37a8d042a1017bb91dc30d9011925c08d65b 100644
--- a/source/blender/io/alembic/intern/abc_axis_conversion.h
+++ b/source/blender/io/alembic/intern/abc_axis_conversion.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Kévin Dietrich & Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Kévin Dietrich & Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/intern/abc_customdata.cc b/source/blender/io/alembic/intern/abc_customdata.cc
index c3ff64fd0adff0200caf42a7b40cd0d262a3e9f3..ecb1fa0a75228e04ab0a3cc3ecf2cb49afe66253 100644
--- a/source/blender/io/alembic/intern/abc_customdata.cc
+++ b/source/blender/io/alembic/intern/abc_customdata.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Kévin Dietrich.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Kévin Dietrich. All rights reserved. */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/intern/abc_customdata.h b/source/blender/io/alembic/intern/abc_customdata.h
index 97a9235753fbfaa8c289fdd6c35c2916a17c5e5f..74a6ca41a85573c74e395d9a02a5886edb931321 100644
--- a/source/blender/io/alembic/intern/abc_customdata.h
+++ b/source/blender/io/alembic/intern/abc_customdata.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Kévin Dietrich.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Kévin Dietrich. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/intern/abc_reader_archive.cc b/source/blender/io/alembic/intern/abc_reader_archive.cc
index 94def04128527446fa984bff9812e07956eb00f0..73ed7a80e52923e7d11cd5236816ac405a1ba25e 100644
--- a/source/blender/io/alembic/intern/abc_reader_archive.cc
+++ b/source/blender/io/alembic/intern/abc_reader_archive.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Kévin Dietrich.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Kévin Dietrich. All rights reserved. */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/intern/abc_reader_archive.h b/source/blender/io/alembic/intern/abc_reader_archive.h
index 937e3a190cf17eb8ee4d4c74e4ca1c435fdb0f41..18f36922a1ba4bd7e1509716dea721a7f249953f 100644
--- a/source/blender/io/alembic/intern/abc_reader_archive.h
+++ b/source/blender/io/alembic/intern/abc_reader_archive.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Kévin Dietrich.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Kévin Dietrich. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/intern/abc_reader_camera.cc b/source/blender/io/alembic/intern/abc_reader_camera.cc
index d7a096a4ed8b754f89b745ae93b2159935404c47..830526a11ac7893b173da016cf311073daa754e3 100644
--- a/source/blender/io/alembic/intern/abc_reader_camera.cc
+++ b/source/blender/io/alembic/intern/abc_reader_camera.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/intern/abc_reader_camera.h b/source/blender/io/alembic/intern/abc_reader_camera.h
index ca8dee80c9d0440fac24ce23c92b547fe0813835..54d56d6405c8c2c5909f6ea5be0c71d42b0755c0 100644
--- a/source/blender/io/alembic/intern/abc_reader_camera.h
+++ b/source/blender/io/alembic/intern/abc_reader_camera.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/intern/abc_reader_curves.cc b/source/blender/io/alembic/intern/abc_reader_curves.cc
index bd1e57da648dae2ab128902e34a4b7207a52dba6..a6400dc6f6cbf32e11fc93f9f55542b2c750a5e1 100644
--- a/source/blender/io/alembic/intern/abc_reader_curves.cc
+++ b/source/blender/io/alembic/intern/abc_reader_curves.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Kévin Dietrich.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Kévin Dietrich. All rights reserved. */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/intern/abc_reader_curves.h b/source/blender/io/alembic/intern/abc_reader_curves.h
index e7e6fa9f0b2f47adea60382ef4ece272e7bddc5e..ee24427cec4b7677735c0a00f849de7d8cad000f 100644
--- a/source/blender/io/alembic/intern/abc_reader_curves.h
+++ b/source/blender/io/alembic/intern/abc_reader_curves.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Kévin Dietrich.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Kévin Dietrich. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/intern/abc_reader_mesh.cc b/source/blender/io/alembic/intern/abc_reader_mesh.cc
index 43581ad48d99b533c86ca1ad6b6bd62f9f93c2af..1d00b55ca784e66ca14e7758a3de7dac24379474 100644
--- a/source/blender/io/alembic/intern/abc_reader_mesh.cc
+++ b/source/blender/io/alembic/intern/abc_reader_mesh.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/intern/abc_reader_mesh.h b/source/blender/io/alembic/intern/abc_reader_mesh.h
index 1123616943ea2b5ab1c5079bcb636145a928acbd..bc853e3b6e42d9ab7431f10f3429ba808f4f7436 100644
--- a/source/blender/io/alembic/intern/abc_reader_mesh.h
+++ b/source/blender/io/alembic/intern/abc_reader_mesh.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/intern/abc_reader_nurbs.cc b/source/blender/io/alembic/intern/abc_reader_nurbs.cc
index 4492d1e1ca083c879699d80ef3f39f86c676478b..b744106ff95d002e4714bb03077c0683417fffaa 100644
--- a/source/blender/io/alembic/intern/abc_reader_nurbs.cc
+++ b/source/blender/io/alembic/intern/abc_reader_nurbs.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/intern/abc_reader_nurbs.h b/source/blender/io/alembic/intern/abc_reader_nurbs.h
index 66e68cf694227dcd2db2462b13a5851281838934..851895739035c446219140caa8e8a1c2ec536eeb 100644
--- a/source/blender/io/alembic/intern/abc_reader_nurbs.h
+++ b/source/blender/io/alembic/intern/abc_reader_nurbs.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/intern/abc_reader_object.cc b/source/blender/io/alembic/intern/abc_reader_object.cc
index 86fa580bf1fb8f3e401be0d822bfb2de9f98ae69..72aec8f4336d7aa25bd026d28e12e92eebb878df 100644
--- a/source/blender/io/alembic/intern/abc_reader_object.cc
+++ b/source/blender/io/alembic/intern/abc_reader_object.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/intern/abc_reader_object.h b/source/blender/io/alembic/intern/abc_reader_object.h
index 5b327a9ddd9f31347d9a8384a8620c8842d9eac7..d33eabfbee5f69815153470fbe11e175352dda59 100644
--- a/source/blender/io/alembic/intern/abc_reader_object.h
+++ b/source/blender/io/alembic/intern/abc_reader_object.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/intern/abc_reader_points.cc b/source/blender/io/alembic/intern/abc_reader_points.cc
index 0135e1500975e30c3b86af95c2206aa1f5aabcdd..ff189bc92dc0a04f3a16e670e87fa253b2bfd259 100644
--- a/source/blender/io/alembic/intern/abc_reader_points.cc
+++ b/source/blender/io/alembic/intern/abc_reader_points.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Kévin Dietrich.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Kévin Dietrich. All rights reserved. */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/intern/abc_reader_points.h b/source/blender/io/alembic/intern/abc_reader_points.h
index 2f91e07d26abf89f2b0914865a85865a310f8b5a..7e62f78303dfb7fb39de7f02096369f8656ea690 100644
--- a/source/blender/io/alembic/intern/abc_reader_points.h
+++ b/source/blender/io/alembic/intern/abc_reader_points.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Kévin Dietrich.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Kévin Dietrich. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/intern/abc_reader_transform.cc b/source/blender/io/alembic/intern/abc_reader_transform.cc
index 625cd255dbaabe8ced8358a3688a9035ca246a64..0d3227fc71885ffb8d5378446c62987873db7902 100644
--- a/source/blender/io/alembic/intern/abc_reader_transform.cc
+++ b/source/blender/io/alembic/intern/abc_reader_transform.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/intern/abc_reader_transform.h b/source/blender/io/alembic/intern/abc_reader_transform.h
index 6810cc214b72adce05b18a8bb05ead0bf154b754..a1cd91a1b47de8da424b6af3750e33e0edf04050 100644
--- a/source/blender/io/alembic/intern/abc_reader_transform.h
+++ b/source/blender/io/alembic/intern/abc_reader_transform.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/intern/abc_util.cc b/source/blender/io/alembic/intern/abc_util.cc
index 952fe1fa7830784029a0e224999572d08afd7d7b..a253cb62a6d9e6f80142a96598d9b184beadc57c 100644
--- a/source/blender/io/alembic/intern/abc_util.cc
+++ b/source/blender/io/alembic/intern/abc_util.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/alembic/intern/abc_util.h b/source/blender/io/alembic/intern/abc_util.h
index 672494e80db1ddea195d703754d810181f779ec5..a8479b3d27b8d2d7d646b08d602056141f872792 100644
--- a/source/blender/io/alembic/intern/abc_util.h
+++ b/source/blender/io/alembic/intern/abc_util.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/alembic/intern/alembic_capi.cc b/source/blender/io/alembic/intern/alembic_capi.cc
index 58fc4dd599dbceeaa1fadc9605864f620c711ef8..f8267d19d8f12b8a2948a130533837813e2851ed 100644
--- a/source/blender/io/alembic/intern/alembic_capi.cc
+++ b/source/blender/io/alembic/intern/alembic_capi.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup balembic
diff --git a/source/blender/io/avi/AVI_avi.h b/source/blender/io/avi/AVI_avi.h
index ba1ef9261a0236da4c1ffffd8acc993e70d2eda5..e3af171355da2f48416c4d4ad4a7cd786a55c2f6 100644
--- a/source/blender/io/avi/AVI_avi.h
+++ b/source/blender/io/avi/AVI_avi.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup avi
diff --git a/source/blender/io/avi/CMakeLists.txt b/source/blender/io/avi/CMakeLists.txt
index 76c9035367336b1641b7ed80e6f14518d37a5793..3ec85c709c62b9290eb4bba090006be4c3ca1bf8 100644
--- a/source/blender/io/avi/CMakeLists.txt
+++ b/source/blender/io/avi/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/io/avi/intern/avi.c b/source/blender/io/avi/intern/avi.c
index 221e56ac793ac1bdcacf0e588c6b22bd093ec613..8bf4f8124a30e76808d37272f8e5136d135c5fa7 100644
--- a/source/blender/io/avi/intern/avi.c
+++ b/source/blender/io/avi/intern/avi.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup avi
diff --git a/source/blender/io/avi/intern/avi_codecs.c b/source/blender/io/avi/intern/avi_codecs.c
index fae8285aff5f5dab5dd434cfe4e13096e80d5d30..cbb96e12930fb2251eb4041570c50f6bf5edfd8f 100644
--- a/source/blender/io/avi/intern/avi_codecs.c
+++ b/source/blender/io/avi/intern/avi_codecs.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup avi
diff --git a/source/blender/io/avi/intern/avi_endian.c b/source/blender/io/avi/intern/avi_endian.c
index 36cee7bcadc9e50bf3dd93095417161fdaf5d0db..1136900d8b1c04e470a19819d949f6459bc016f9 100644
--- a/source/blender/io/avi/intern/avi_endian.c
+++ b/source/blender/io/avi/intern/avi_endian.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup avi
diff --git a/source/blender/io/avi/intern/avi_endian.h b/source/blender/io/avi/intern/avi_endian.h
index 88c13d179509fe072bb85a230a483f02287340f9..6cbef9e1e8d7160f769f3e3c9d7820f96c7b3881 100644
--- a/source/blender/io/avi/intern/avi_endian.h
+++ b/source/blender/io/avi/intern/avi_endian.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup avi
diff --git a/source/blender/io/avi/intern/avi_intern.h b/source/blender/io/avi/intern/avi_intern.h
index 28ab999f6e35c75ec14fd221a1fc2e6285a1ba50..747b58f11ee455469f83af70728f7e428ad21953 100644
--- a/source/blender/io/avi/intern/avi_intern.h
+++ b/source/blender/io/avi/intern/avi_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup avi
diff --git a/source/blender/io/avi/intern/avi_mjpeg.c b/source/blender/io/avi/intern/avi_mjpeg.c
index 8b132df7b8fd3a0027120a79e876b77168699300..53366a7b0e30f09d8f4bd34b6f28a24a6a119860 100644
--- a/source/blender/io/avi/intern/avi_mjpeg.c
+++ b/source/blender/io/avi/intern/avi_mjpeg.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup avi
diff --git a/source/blender/io/avi/intern/avi_mjpeg.h b/source/blender/io/avi/intern/avi_mjpeg.h
index 3ee1b611f703da913f43956f880387487b6b6714..79fa0fe9995ff05826701c036fdf1a35ccdb2c30 100644
--- a/source/blender/io/avi/intern/avi_mjpeg.h
+++ b/source/blender/io/avi/intern/avi_mjpeg.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup avi
diff --git a/source/blender/io/avi/intern/avi_options.c b/source/blender/io/avi/intern/avi_options.c
index 65c64951ca0b88f5503e60202f2036fdde3ee788..66b71c12e373eb6f907ba61ef3b8fd0a030eca81 100644
--- a/source/blender/io/avi/intern/avi_options.c
+++ b/source/blender/io/avi/intern/avi_options.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup avi
diff --git a/source/blender/io/avi/intern/avi_rgb.c b/source/blender/io/avi/intern/avi_rgb.c
index f1d83b9857b87b02cb5949e2d0c047e26d9d4875..ffc3d0477fa0a6889d96698da8ae2c3cfea7bc8c 100644
--- a/source/blender/io/avi/intern/avi_rgb.c
+++ b/source/blender/io/avi/intern/avi_rgb.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup avi
diff --git a/source/blender/io/avi/intern/avi_rgb.h b/source/blender/io/avi/intern/avi_rgb.h
index aac8a2dffbf61c9c738792f89fd5f8a47ba56257..c2e746123bb7a40b1d6532b3270061899f2f1382 100644
--- a/source/blender/io/avi/intern/avi_rgb.h
+++ b/source/blender/io/avi/intern/avi_rgb.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup avi
diff --git a/source/blender/io/avi/intern/avi_rgb32.c b/source/blender/io/avi/intern/avi_rgb32.c
index 3efa4814c70ce900da14d7c8daf1e6b44f424927..84ae023fcdd1db3635d4f3ba059c9652ac4e4d80 100644
--- a/source/blender/io/avi/intern/avi_rgb32.c
+++ b/source/blender/io/avi/intern/avi_rgb32.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup avi
diff --git a/source/blender/io/avi/intern/avi_rgb32.h b/source/blender/io/avi/intern/avi_rgb32.h
index 675b1ced41e3edaa52c9b1264180027f90cf6175..825a7d2832d7aa6133bf8d40a75b0b145712ea25 100644
--- a/source/blender/io/avi/intern/avi_rgb32.h
+++ b/source/blender/io/avi/intern/avi_rgb32.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup avi
diff --git a/source/blender/io/collada/AnimationClipExporter.cpp b/source/blender/io/collada/AnimationClipExporter.cpp
index 5cfcd35a11ec0311d46a2c0b2872d62527af813b..a59418c6b18680c43a0289e22a6de1101c803dbe 100644
--- a/source/blender/io/collada/AnimationClipExporter.cpp
+++ b/source/blender/io/collada/AnimationClipExporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "AnimationClipExporter.h"
 #include "GeometryExporter.h"
diff --git a/source/blender/io/collada/AnimationClipExporter.h b/source/blender/io/collada/AnimationClipExporter.h
index a19fcb4d372db8f78f72ca3f01fddd95a81b85b5..0c5390910e3dee1667efbb824ee4501e74cf6631 100644
--- a/source/blender/io/collada/AnimationClipExporter.h
+++ b/source/blender/io/collada/AnimationClipExporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/io/collada/AnimationExporter.cpp b/source/blender/io/collada/AnimationExporter.cpp
index 56fd0938eea3bd5538e219b7c85c78bcf1c9ab19..7df9df1f460efe3e8e9ebaaf10de907808517fc7 100644
--- a/source/blender/io/collada/AnimationExporter.cpp
+++ b/source/blender/io/collada/AnimationExporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/AnimationExporter.h b/source/blender/io/collada/AnimationExporter.h
index 11732af33ba11f2c0a0778fbd0c738a1a72462e0..276743af6847985d35631709cba4c7303fd37ba6 100644
--- a/source/blender/io/collada/AnimationExporter.h
+++ b/source/blender/io/collada/AnimationExporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/io/collada/AnimationImporter.cpp b/source/blender/io/collada/AnimationImporter.cpp
index 49a4b22dbc3a07047fe5bd813650c49be29e604d..b14de8be7dfb7b5dd5557bdd10185c443d490f7d 100644
--- a/source/blender/io/collada/AnimationImporter.cpp
+++ b/source/blender/io/collada/AnimationImporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/AnimationImporter.h b/source/blender/io/collada/AnimationImporter.h
index 909a3017e66d68875753c06a5869c2ef16700b41..7c5b38f5f8df386dd45acd718eb6a6d134cac183 100644
--- a/source/blender/io/collada/AnimationImporter.h
+++ b/source/blender/io/collada/AnimationImporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ArmatureExporter.cpp b/source/blender/io/collada/ArmatureExporter.cpp
index 5da70211bfd4e857ca47bf106579ec615c9075d4..87dd2fbd816688d034eefb6632f64512be42696b 100644
--- a/source/blender/io/collada/ArmatureExporter.cpp
+++ b/source/blender/io/collada/ArmatureExporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ArmatureExporter.h b/source/blender/io/collada/ArmatureExporter.h
index c1b58f0071cfde63e7d36a4bc186ea4263bd0245..d573e8bc7097fd9d4b4e4c52725e9eaa1fd60a25 100644
--- a/source/blender/io/collada/ArmatureExporter.h
+++ b/source/blender/io/collada/ArmatureExporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ArmatureImporter.cpp b/source/blender/io/collada/ArmatureImporter.cpp
index cfe9ed6b2e05404af074026f415296170e705d2b..f056488fe93553b5f1c0ade10cb3e2810573b93a 100644
--- a/source/blender/io/collada/ArmatureImporter.cpp
+++ b/source/blender/io/collada/ArmatureImporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ArmatureImporter.h b/source/blender/io/collada/ArmatureImporter.h
index fc0333b0ab19009e958d026a4a06283b5056c238..a68f9c3ed32ae75b1038fcd050ced0a5dd5688fb 100644
--- a/source/blender/io/collada/ArmatureImporter.h
+++ b/source/blender/io/collada/ArmatureImporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/BCAnimationCurve.cpp b/source/blender/io/collada/BCAnimationCurve.cpp
index 005197c9027b29613f7e65d299689234d13b72da..fbb2ba499a5ed0c4ac37d03542a4bd8dd1ad8821 100644
--- a/source/blender/io/collada/BCAnimationCurve.cpp
+++ b/source/blender/io/collada/BCAnimationCurve.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 #include "BCAnimationCurve.h"
 
diff --git a/source/blender/io/collada/BCAnimationCurve.h b/source/blender/io/collada/BCAnimationCurve.h
index cf4cb4e0642006f888428d56f3e16a67b58587e4..8eef6947542a7d8ec75c1f7a47f3b23aebf93544 100644
--- a/source/blender/io/collada/BCAnimationCurve.h
+++ b/source/blender/io/collada/BCAnimationCurve.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/io/collada/BCAnimationSampler.cpp b/source/blender/io/collada/BCAnimationSampler.cpp
index a2d711050cb83eec7be33337c26ca03323d9fe66..29c17b500f3c90da670bef133c9ecb819030cde8 100644
--- a/source/blender/io/collada/BCAnimationSampler.cpp
+++ b/source/blender/io/collada/BCAnimationSampler.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 #include <algorithm> /* std::find */
 #include <map>
diff --git a/source/blender/io/collada/BCAnimationSampler.h b/source/blender/io/collada/BCAnimationSampler.h
index c78590b8e37666a06f84d3313d2357edf849358e..747699b859bddcff1be5136b746ee4a4a0e4bcf8 100644
--- a/source/blender/io/collada/BCAnimationSampler.h
+++ b/source/blender/io/collada/BCAnimationSampler.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/io/collada/BCMath.cpp b/source/blender/io/collada/BCMath.cpp
index c3ee3355a4103b12b0df2d4e76092532e67ed9ee..fc97110611af88992da457979d79e10be136a122 100644
--- a/source/blender/io/collada/BCMath.cpp
+++ b/source/blender/io/collada/BCMath.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 #include "BLI_utildefines.h"
 
diff --git a/source/blender/io/collada/BCMath.h b/source/blender/io/collada/BCMath.h
index dbcfe96bc6155837ae7a6b4c1f8fdfc801ae8b18..c2a27d04f86f4e1ee7b4661cfa1923d14df2e330 100644
--- a/source/blender/io/collada/BCMath.h
+++ b/source/blender/io/collada/BCMath.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/BCSampleData.cpp b/source/blender/io/collada/BCSampleData.cpp
index 9915514dc01a6c3b311eea06fece75676a754f41..42b436ec6fbf27f7632874d2e03d97c54d96cdb2 100644
--- a/source/blender/io/collada/BCSampleData.cpp
+++ b/source/blender/io/collada/BCSampleData.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 #include "BCSampleData.h"
 #include "collada_utils.h"
diff --git a/source/blender/io/collada/BCSampleData.h b/source/blender/io/collada/BCSampleData.h
index a76466a42f5176bd8fd9006093cc2b26f58311f2..d9a1ba4e5a205dd2f2c4ab3c99da05e74548ba58 100644
--- a/source/blender/io/collada/BCSampleData.h
+++ b/source/blender/io/collada/BCSampleData.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/io/collada/BlenderContext.cpp b/source/blender/io/collada/BlenderContext.cpp
index 2a1968d00d2803be6da28ca69be81927d3754358..5f54f38a0ab3b185a2d90d7b5d78cb6b89642833 100644
--- a/source/blender/io/collada/BlenderContext.cpp
+++ b/source/blender/io/collada/BlenderContext.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/BlenderContext.h b/source/blender/io/collada/BlenderContext.h
index 86738bbd242cc8e118c879c3119baed78f34110b..6fdb043b3dc91ceee3752cdb0748e5d18aa174e0 100644
--- a/source/blender/io/collada/BlenderContext.h
+++ b/source/blender/io/collada/BlenderContext.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/BlenderTypes.h b/source/blender/io/collada/BlenderTypes.h
index 63b0471ef6fb8612f00df3a81a3a2fd0e1765a1b..a9b13d212acb1f481b84c55b337becec65e9220f 100644
--- a/source/blender/io/collada/BlenderTypes.h
+++ b/source/blender/io/collada/BlenderTypes.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/CMakeLists.txt b/source/blender/io/collada/CMakeLists.txt
index 9ce3389257dc27e88a4d72309142af7a122af6c1..34949da622ac8fc673dd67e35bc878730ae60342 100644
--- a/source/blender/io/collada/CMakeLists.txt
+++ b/source/blender/io/collada/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 remove_strict_flags()
 FIND_FILE(OPENCOLLADA_ANIMATION_CLIP
diff --git a/source/blender/io/collada/CameraExporter.cpp b/source/blender/io/collada/CameraExporter.cpp
index 246a454eb6625d87cb9c7ef2e3cef2a77897f496..45a7391425686a968bd04851232e1ffc1ff45e7f 100644
--- a/source/blender/io/collada/CameraExporter.cpp
+++ b/source/blender/io/collada/CameraExporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/CameraExporter.h b/source/blender/io/collada/CameraExporter.h
index 6835aef80447b5f59039c74cd869b03800922b75..2ae6a9cacb7357fc1eb82df64cb936f8d8bf07dd 100644
--- a/source/blender/io/collada/CameraExporter.h
+++ b/source/blender/io/collada/CameraExporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ControllerExporter.cpp b/source/blender/io/collada/ControllerExporter.cpp
index 6c13c83fbc77d9325e4c3f28ae4488d4c4247fee..38ad0e42d0fdb5c2cae723959f82b985d44f8108 100644
--- a/source/blender/io/collada/ControllerExporter.cpp
+++ b/source/blender/io/collada/ControllerExporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ControllerExporter.h b/source/blender/io/collada/ControllerExporter.h
index d262d21012ba302ecc67606ef4d9dbbde41f514c..55f16e43d0ff2f2766ded8d52fc365df856147ef 100644
--- a/source/blender/io/collada/ControllerExporter.h
+++ b/source/blender/io/collada/ControllerExporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/DocumentExporter.cpp b/source/blender/io/collada/DocumentExporter.cpp
index 3c64591366c854b8204b048706fbd1b964211538..56adbca13bd358e02ca1e5396bccc9de2de4d571 100644
--- a/source/blender/io/collada/DocumentExporter.cpp
+++ b/source/blender/io/collada/DocumentExporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/DocumentExporter.h b/source/blender/io/collada/DocumentExporter.h
index 850eb4fbbb2b96aa15ef1c2d9e95dc57c1a40329..cf006b9e78334e86c011ff71969da47c7adbbbf6 100644
--- a/source/blender/io/collada/DocumentExporter.h
+++ b/source/blender/io/collada/DocumentExporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/DocumentImporter.cpp b/source/blender/io/collada/DocumentImporter.cpp
index 013df2fa2b7f31533ced1213d5063583c601e220..6515f7553add70e815b699fb28f6b1e3cf1e3ab6 100644
--- a/source/blender/io/collada/DocumentImporter.cpp
+++ b/source/blender/io/collada/DocumentImporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/DocumentImporter.h b/source/blender/io/collada/DocumentImporter.h
index 63faaca471164bc2596770a50d50a7b3aa6ba6ef..03cfda75b3f6aefcc1f1700583c832319b18c16b 100644
--- a/source/blender/io/collada/DocumentImporter.h
+++ b/source/blender/io/collada/DocumentImporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/EffectExporter.cpp b/source/blender/io/collada/EffectExporter.cpp
index 4108472d1df3982c70e5c96e01dec7f52d3b59cb..71a54e3a7c9c628ba506c1605754000330cf1876 100644
--- a/source/blender/io/collada/EffectExporter.cpp
+++ b/source/blender/io/collada/EffectExporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/EffectExporter.h b/source/blender/io/collada/EffectExporter.h
index ab875382b2757ea6a46df99c43a2fc79d654c4d3..4446ef1b40ca119baebc22a863eaa2a458c5cd35 100644
--- a/source/blender/io/collada/EffectExporter.h
+++ b/source/blender/io/collada/EffectExporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ErrorHandler.cpp b/source/blender/io/collada/ErrorHandler.cpp
index 86349e04ff6aefa6671521ee49039a95e5b148cf..551c87c32a0f297a93d56de671a2cf85760bc228 100644
--- a/source/blender/io/collada/ErrorHandler.cpp
+++ b/source/blender/io/collada/ErrorHandler.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ErrorHandler.h b/source/blender/io/collada/ErrorHandler.h
index f5fa9a4ad912a42a66fe369efe73f0992e8e7027..71ceb70e37db6fbf1fdeb6065e87981cd7e9cc00 100644
--- a/source/blender/io/collada/ErrorHandler.h
+++ b/source/blender/io/collada/ErrorHandler.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ExportSettings.cpp b/source/blender/io/collada/ExportSettings.cpp
index da3c0de0fdfef0f30f592108f878da705f9c16f1..de9ec6776536218db115866892780dc78db7969f 100644
--- a/source/blender/io/collada/ExportSettings.cpp
+++ b/source/blender/io/collada/ExportSettings.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ExportSettings.h b/source/blender/io/collada/ExportSettings.h
index 2f647cefa8b2a796ff805d21b543975d69353745..b3f192fdac6b05d4da134aa5b63e7bee471f6faf 100644
--- a/source/blender/io/collada/ExportSettings.h
+++ b/source/blender/io/collada/ExportSettings.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ExtraHandler.cpp b/source/blender/io/collada/ExtraHandler.cpp
index 78785e9aeadc3c9af94b1e17b688b7e74d8f707d..b281f0e1a0a325cd507afccf515ef3fe40a0b0bf 100644
--- a/source/blender/io/collada/ExtraHandler.cpp
+++ b/source/blender/io/collada/ExtraHandler.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ExtraHandler.h b/source/blender/io/collada/ExtraHandler.h
index 98e30318aad992028777f12ed003c5cf8e401238..204c343b070cfb1ec377f313e0422a7e6d36ca62 100644
--- a/source/blender/io/collada/ExtraHandler.h
+++ b/source/blender/io/collada/ExtraHandler.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ExtraTags.cpp b/source/blender/io/collada/ExtraTags.cpp
index f38b0d769d7dc0781fdf5148b838538d846c6d82..398718f11330b74c5769b7828bebcdd5c7497f6e 100644
--- a/source/blender/io/collada/ExtraTags.cpp
+++ b/source/blender/io/collada/ExtraTags.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ExtraTags.h b/source/blender/io/collada/ExtraTags.h
index a72cdeb32a854d61c05ced5e9a8b09f61db3e990..b0a5ddc52630dcc36b19085fb89f26916f2528ad 100644
--- a/source/blender/io/collada/ExtraTags.h
+++ b/source/blender/io/collada/ExtraTags.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/GeometryExporter.cpp b/source/blender/io/collada/GeometryExporter.cpp
index 73e3eeda4625616e8f33223bd08f9e321c4dc3af..2c9f16c7624db0d2200cb1ee08f013dadecc2398 100644
--- a/source/blender/io/collada/GeometryExporter.cpp
+++ b/source/blender/io/collada/GeometryExporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/GeometryExporter.h b/source/blender/io/collada/GeometryExporter.h
index e6e08f2b97724599d634f6778670f0ceb23a1059..70e39f5bcd48ca0e41f9bc7fc836c3c0e8492e7a 100644
--- a/source/blender/io/collada/GeometryExporter.h
+++ b/source/blender/io/collada/GeometryExporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ImageExporter.cpp b/source/blender/io/collada/ImageExporter.cpp
index 4dd7e617459438fe022eff65c86df2f7d4098b3c..f57c5dd5e53ca8a049cf1b1c1a82efbfd6008a1a 100644
--- a/source/blender/io/collada/ImageExporter.cpp
+++ b/source/blender/io/collada/ImageExporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ImageExporter.h b/source/blender/io/collada/ImageExporter.h
index be10a0a2d583e84164e09c7b485851dbc5ff591c..5859f076e014e443a26a140b94afa4f06fe1f607 100644
--- a/source/blender/io/collada/ImageExporter.h
+++ b/source/blender/io/collada/ImageExporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ImportSettings.cpp b/source/blender/io/collada/ImportSettings.cpp
index 049ee1d097525f72ebef418fa7caf486e7a8c934..aa22bda75ff89e840b02c98c978ac6fdd2b3aced 100644
--- a/source/blender/io/collada/ImportSettings.cpp
+++ b/source/blender/io/collada/ImportSettings.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/ImportSettings.h b/source/blender/io/collada/ImportSettings.h
index e8a5bf8ce818b174e9cd4ce662264e3a1ec5e9b2..c92cf580112e52929dd24731befcf9cebd3dcdef 100644
--- a/source/blender/io/collada/ImportSettings.h
+++ b/source/blender/io/collada/ImportSettings.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/InstanceWriter.cpp b/source/blender/io/collada/InstanceWriter.cpp
index 6c197823ec2df5a9a3be8d1364ac31a86889bd43..d88f24b8e8b552a11d0f3497a2fd5e146d827779 100644
--- a/source/blender/io/collada/InstanceWriter.cpp
+++ b/source/blender/io/collada/InstanceWriter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/InstanceWriter.h b/source/blender/io/collada/InstanceWriter.h
index c79d66918420b213edfaec8559bbfc3afc8f0858..967616bfb052ed8258fb366ab83917a804d3572c 100644
--- a/source/blender/io/collada/InstanceWriter.h
+++ b/source/blender/io/collada/InstanceWriter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/LightExporter.cpp b/source/blender/io/collada/LightExporter.cpp
index 2f50a603ca3349d36f0b1560d67c850d5e2c5fc0..33c041e790f856f7a17e726189e6533695809f37 100644
--- a/source/blender/io/collada/LightExporter.cpp
+++ b/source/blender/io/collada/LightExporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/LightExporter.h b/source/blender/io/collada/LightExporter.h
index 90256691c064f1a4c4bb1f5a434bd599d167b686..e9dd7f4d812f70cd066d6e470fd29a60ed06e54a 100644
--- a/source/blender/io/collada/LightExporter.h
+++ b/source/blender/io/collada/LightExporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/MaterialExporter.cpp b/source/blender/io/collada/MaterialExporter.cpp
index 72669e9d8d2b67cb9842346edf04f6c3e40ea7f5..2a7d09daf2ceab7bc64db7dc82dc4d118dd01044 100644
--- a/source/blender/io/collada/MaterialExporter.cpp
+++ b/source/blender/io/collada/MaterialExporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/MaterialExporter.h b/source/blender/io/collada/MaterialExporter.h
index c684e96be19b07f92bb45972a153811ada9ffd32..8790c32158d460ad732991d6b7e485b5ea9ecedd 100644
--- a/source/blender/io/collada/MaterialExporter.h
+++ b/source/blender/io/collada/MaterialExporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/Materials.cpp b/source/blender/io/collada/Materials.cpp
index 6e17172f6423a186d2bfc907284c0bd69dca738e..b5d89d8d1cfc68691bf7baa5a2b59fe48795632b 100644
--- a/source/blender/io/collada/Materials.cpp
+++ b/source/blender/io/collada/Materials.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "Materials.h"
 
diff --git a/source/blender/io/collada/Materials.h b/source/blender/io/collada/Materials.h
index e68f67bf0493da9f2168b53a59b860a2481afd1c..747893f3594a2d0d9df3a66c8981f74b95444e71 100644
--- a/source/blender/io/collada/Materials.h
+++ b/source/blender/io/collada/Materials.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/io/collada/MeshImporter.cpp b/source/blender/io/collada/MeshImporter.cpp
index 036819af6a39206c11066383667566c26c938e9d..fc94e912417d38533a5bd17814126cfd1d044d6a 100644
--- a/source/blender/io/collada/MeshImporter.cpp
+++ b/source/blender/io/collada/MeshImporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/MeshImporter.h b/source/blender/io/collada/MeshImporter.h
index 95ac32a1b4c6a08823f90a132e1f52c57605bf56..79b9778738d44cd3bc6dd78dcb31a22a9f92baff 100644
--- a/source/blender/io/collada/MeshImporter.h
+++ b/source/blender/io/collada/MeshImporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/SceneExporter.cpp b/source/blender/io/collada/SceneExporter.cpp
index 09da2288cfc8d991abecfe145e507eae03ac55b9..6cdfce5f35afe45ebf156a49a2876d8b7cd5e180 100644
--- a/source/blender/io/collada/SceneExporter.cpp
+++ b/source/blender/io/collada/SceneExporter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/SceneExporter.h b/source/blender/io/collada/SceneExporter.h
index f0f0a3a52985c1a1872dac71816fdada9773e849..9e68b679a9a4dc149719664ffc842c535e773ae9 100644
--- a/source/blender/io/collada/SceneExporter.h
+++ b/source/blender/io/collada/SceneExporter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/SkinInfo.cpp b/source/blender/io/collada/SkinInfo.cpp
index 3b740b9cd8c141c9efd8c92eda189d6d742f58a8..8144e0a499d980c67f51c2b3e6a8a195877c8590 100644
--- a/source/blender/io/collada/SkinInfo.cpp
+++ b/source/blender/io/collada/SkinInfo.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/SkinInfo.h b/source/blender/io/collada/SkinInfo.h
index 49a820f2fcd044f9c0ebf211c8935bfa40e4b4dd..79a7e7d55748ca8a23ecae8fa1f83ed36b4e20e7 100644
--- a/source/blender/io/collada/SkinInfo.h
+++ b/source/blender/io/collada/SkinInfo.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/TransformReader.cpp b/source/blender/io/collada/TransformReader.cpp
index d23f8da25706d259be6148964e599c424910860c..e5872c28bcead5fb221a1f115d756ecd443dc06e 100644
--- a/source/blender/io/collada/TransformReader.cpp
+++ b/source/blender/io/collada/TransformReader.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/TransformReader.h b/source/blender/io/collada/TransformReader.h
index 9b87f56699e8d0cf6e4a681d1f6c770bfdc74cd9..36701b846e3f2f6c16422dc4de602c573e2c6401 100644
--- a/source/blender/io/collada/TransformReader.h
+++ b/source/blender/io/collada/TransformReader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/TransformWriter.cpp b/source/blender/io/collada/TransformWriter.cpp
index c22631e7bd378f699e8cb2449c191f4f527dc54c..57390bc744118f973a571e75f3fe7c0dfd8c0da6 100644
--- a/source/blender/io/collada/TransformWriter.cpp
+++ b/source/blender/io/collada/TransformWriter.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/TransformWriter.h b/source/blender/io/collada/TransformWriter.h
index 200f641b064d1c6b0f78df14b8841c0d55988847..3ef8d49f6af91c8935bd7b8bb32112db92b62641 100644
--- a/source/blender/io/collada/TransformWriter.h
+++ b/source/blender/io/collada/TransformWriter.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/collada.cpp b/source/blender/io/collada/collada.cpp
index f3c69c7d3d051ad226545d3b79c2c266e5fe5474..d559c0b49621fe8a4fcbbebfccda77ef3a417571 100644
--- a/source/blender/io/collada/collada.cpp
+++ b/source/blender/io/collada/collada.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/collada.h b/source/blender/io/collada/collada.h
index 2668be6153b3e8ed06262452d0ade7caab443d06..9e965e9cbdb2cd8bcd2fe386d2b4a9450291db42 100644
--- a/source/blender/io/collada/collada.h
+++ b/source/blender/io/collada/collada.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/collada_internal.cpp b/source/blender/io/collada/collada_internal.cpp
index 5592f5393a26eddc5964eeac8677df800caba407..db27236b88520f68fad06cce8e96f7abb8cf3efc 100644
--- a/source/blender/io/collada/collada_internal.cpp
+++ b/source/blender/io/collada/collada_internal.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/collada_internal.h b/source/blender/io/collada/collada_internal.h
index cdd19ebe9a795f648acd38cf2affcd37012b2959..26cd2dbb4bf83dbb8f66fd263500411892abb02d 100644
--- a/source/blender/io/collada/collada_internal.h
+++ b/source/blender/io/collada/collada_internal.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/collada_utils.cpp b/source/blender/io/collada/collada_utils.cpp
index d3655c10655f75fa15a3e95c80a16933a40e8534..79ac5be35f89d3572d6d786900ced1feea8a09b6 100644
--- a/source/blender/io/collada/collada_utils.cpp
+++ b/source/blender/io/collada/collada_utils.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/collada/collada_utils.h b/source/blender/io/collada/collada_utils.h
index e06f7b2cb8bac026ab29eef3b30e8dd818b670d4..2135277674ae36231381795a49969aac525e9cab 100644
--- a/source/blender/io/collada/collada_utils.h
+++ b/source/blender/io/collada/collada_utils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup collada
diff --git a/source/blender/io/common/CMakeLists.txt b/source/blender/io/common/CMakeLists.txt
index 2aaf5d57fd6401217d13567cdbfaffe163765997..02bd5b2b81f35115d4fd4a40cd2ee96bd136af31 100644
--- a/source/blender/io/common/CMakeLists.txt
+++ b/source/blender/io/common/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2020, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2020 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/io/common/IO_abstract_hierarchy_iterator.h b/source/blender/io/common/IO_abstract_hierarchy_iterator.h
index e024b766c999f6d45f9135b99f70163ebab3ff63..3c6b6cc631e38279b949ef8944a1788be1b4e5b3 100644
--- a/source/blender/io/common/IO_abstract_hierarchy_iterator.h
+++ b/source/blender/io/common/IO_abstract_hierarchy_iterator.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /*
  * This file contains the AbstractHierarchyIterator. It is intended for exporters for file
diff --git a/source/blender/io/common/IO_dupli_persistent_id.hh b/source/blender/io/common/IO_dupli_persistent_id.hh
index afc539636ac0a4e1c4514a7ed2cd0fa004368293..96ff418c13f91bbb6a8b707ca3b97fe3861e8821 100644
--- a/source/blender/io/common/IO_dupli_persistent_id.hh
+++ b/source/blender/io/common/IO_dupli_persistent_id.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include "BKE_duplilist.h"
diff --git a/source/blender/io/common/IO_types.h b/source/blender/io/common/IO_types.h
index 4570e29f6ed41a787230f8f562046d48686b6106..7b1741eeaf3d74223b2be04c8bfacefc09729b68 100644
--- a/source/blender/io/common/IO_types.h
+++ b/source/blender/io/common/IO_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 #pragma once
 
 /* The CacheArchiveHandle struct is only used for anonymous pointers,
diff --git a/source/blender/io/common/intern/abstract_hierarchy_iterator.cc b/source/blender/io/common/intern/abstract_hierarchy_iterator.cc
index bfd91620654449ca3866249baabc9a43d3a99ab6..78f46f4bbc730d7162359d09b176fbc4bb21ffc1 100644
--- a/source/blender/io/common/intern/abstract_hierarchy_iterator.cc
+++ b/source/blender/io/common/intern/abstract_hierarchy_iterator.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #include "IO_abstract_hierarchy_iterator.h"
 #include "dupli_parent_finder.hh"
 
diff --git a/source/blender/io/common/intern/abstract_hierarchy_iterator_test.cc b/source/blender/io/common/intern/abstract_hierarchy_iterator_test.cc
index 457d68953ff603cc8c63e31ea6f110a688cb3387..52cae89c2e8cec9ed44a9b9494b8c770be340188 100644
--- a/source/blender/io/common/intern/abstract_hierarchy_iterator_test.cc
+++ b/source/blender/io/common/intern/abstract_hierarchy_iterator_test.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #include "IO_abstract_hierarchy_iterator.h"
 
 #include "tests/blendfile_loading_base_test.h"
diff --git a/source/blender/io/common/intern/dupli_parent_finder.cc b/source/blender/io/common/intern/dupli_parent_finder.cc
index 221e70ed587476d1e4af34281448a9c3aa61784d..e690d2e8e35f0730e84ab054a644c1ddba5bd38e 100644
--- a/source/blender/io/common/intern/dupli_parent_finder.cc
+++ b/source/blender/io/common/intern/dupli_parent_finder.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "dupli_parent_finder.hh"
 
diff --git a/source/blender/io/common/intern/dupli_parent_finder.hh b/source/blender/io/common/intern/dupli_parent_finder.hh
index b7632a7222247347f2309179ca3d7905ff4b63bc..346df88bf3fee8edb7cb267a6c0b618ea1400b56 100644
--- a/source/blender/io/common/intern/dupli_parent_finder.hh
+++ b/source/blender/io/common/intern/dupli_parent_finder.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include "IO_dupli_persistent_id.hh"
diff --git a/source/blender/io/common/intern/dupli_persistent_id.cc b/source/blender/io/common/intern/dupli_persistent_id.cc
index b40cd83ef449f35ce8a7e827a4d3efc09271f418..0df193db182a99da8e0c5f6c719ee4841e0ae8b6 100644
--- a/source/blender/io/common/intern/dupli_persistent_id.cc
+++ b/source/blender/io/common/intern/dupli_persistent_id.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 #include "dupli_parent_finder.hh"
 
diff --git a/source/blender/io/common/intern/hierarchy_context_order_test.cc b/source/blender/io/common/intern/hierarchy_context_order_test.cc
index 3f2e348a8eebfc5908a220dd9979bb98df290e1f..25b5a45f37bc246f35e1a3117a667e6be097ecdf 100644
--- a/source/blender/io/common/intern/hierarchy_context_order_test.cc
+++ b/source/blender/io/common/intern/hierarchy_context_order_test.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #include "IO_abstract_hierarchy_iterator.h"
 
 #include "testing/testing.h"
diff --git a/source/blender/io/common/intern/object_identifier.cc b/source/blender/io/common/intern/object_identifier.cc
index 2df1befcd6960bcfcccae4d6a561a475f43cf806..2d1cc0fbe7fea13bd20b53afab4200d7cf236dad 100644
--- a/source/blender/io/common/intern/object_identifier.cc
+++ b/source/blender/io/common/intern/object_identifier.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #include "IO_abstract_hierarchy_iterator.h"
 
 #include "BKE_duplilist.h"
diff --git a/source/blender/io/common/intern/object_identifier_test.cc b/source/blender/io/common/intern/object_identifier_test.cc
index 8d0800ce2cb8459ea39123169cab72564b13e18d..abf36cfe32b4dd3f7a5891ff1a31992fae630e11 100644
--- a/source/blender/io/common/intern/object_identifier_test.cc
+++ b/source/blender/io/common/intern/object_identifier_test.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #include "IO_abstract_hierarchy_iterator.h"
 
 #include "testing/testing.h"
diff --git a/source/blender/io/gpencil/CMakeLists.txt b/source/blender/io/gpencil/CMakeLists.txt
index 3ef9fa44ff8276c4d0886e423fa372723c402547..54bf52dc5468fdbf58a6e02efdd9d7845fcc1972 100644
--- a/source/blender/io/gpencil/CMakeLists.txt
+++ b/source/blender/io/gpencil/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/io/gpencil/gpencil_io.h b/source/blender/io/gpencil/gpencil_io.h
index ea328a531c664c36b383cbbfba9f32ccb3f75a25..6cd9fe087a6937345935dcc43882ebf75d1e27eb 100644
--- a/source/blender/io/gpencil/gpencil_io.h
+++ b/source/blender/io/gpencil/gpencil_io.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/gpencil/intern/gpencil_io_base.cc b/source/blender/io/gpencil/intern/gpencil_io_base.cc
index 7868bade8c1949e1706e32e14900b2228db9b35b..043f8f9e0c98f5c1ab3cd3d447f3a8c3c5826f10 100644
--- a/source/blender/io/gpencil/intern/gpencil_io_base.cc
+++ b/source/blender/io/gpencil/intern/gpencil_io_base.cc
@@ -1,23 +1,7 @@
 
 
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bgpencil
diff --git a/source/blender/io/gpencil/intern/gpencil_io_base.hh b/source/blender/io/gpencil/intern/gpencil_io_base.hh
index ae54d5056dc17310ac9379f2d16de4d680ccc1de..96ba49c31b1ca34889c02f6b84df5da21f34bd4b 100644
--- a/source/blender/io/gpencil/intern/gpencil_io_base.hh
+++ b/source/blender/io/gpencil/intern/gpencil_io_base.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/gpencil/intern/gpencil_io_capi.cc b/source/blender/io/gpencil/intern/gpencil_io_capi.cc
index 92ce165e059222cda5382463ad581ccd0bfa3652..5acac885a389a2f8637ffc930c8d8a94f6dfa717 100644
--- a/source/blender/io/gpencil/intern/gpencil_io_capi.cc
+++ b/source/blender/io/gpencil/intern/gpencil_io_capi.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bgpencil
diff --git a/source/blender/io/gpencil/intern/gpencil_io_export_base.hh b/source/blender/io/gpencil/intern/gpencil_io_export_base.hh
index ffb1c6ce2629f634571b8d2869d4b61f531aa2ce..5f910390cb25f81df415fe7d5c84d5897d1e0a7b 100644
--- a/source/blender/io/gpencil/intern/gpencil_io_export_base.hh
+++ b/source/blender/io/gpencil/intern/gpencil_io_export_base.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/gpencil/intern/gpencil_io_export_pdf.cc b/source/blender/io/gpencil/intern/gpencil_io_export_pdf.cc
index c856e60c4b8525fdaa7c7ec6113a2765e2dcd5e5..3c4676beb7519a10fbb211c7ce4317ed1b0b549e 100644
--- a/source/blender/io/gpencil/intern/gpencil_io_export_pdf.cc
+++ b/source/blender/io/gpencil/intern/gpencil_io_export_pdf.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bgpencil
diff --git a/source/blender/io/gpencil/intern/gpencil_io_export_pdf.hh b/source/blender/io/gpencil/intern/gpencil_io_export_pdf.hh
index 5de22530fecc9df25fbb44117b94106ddc7a9203..f6b9fe4fec1d37df1434929a985eb78b47cf55ee 100644
--- a/source/blender/io/gpencil/intern/gpencil_io_export_pdf.hh
+++ b/source/blender/io/gpencil/intern/gpencil_io_export_pdf.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/gpencil/intern/gpencil_io_export_svg.cc b/source/blender/io/gpencil/intern/gpencil_io_export_svg.cc
index 3ca6ed6cd45fabb1e57f76d66f74a7d482c0b61f..d21af4c09eb23c621d248f4c33b2533aa2cbc131 100644
--- a/source/blender/io/gpencil/intern/gpencil_io_export_svg.cc
+++ b/source/blender/io/gpencil/intern/gpencil_io_export_svg.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bgpencil
diff --git a/source/blender/io/gpencil/intern/gpencil_io_export_svg.hh b/source/blender/io/gpencil/intern/gpencil_io_export_svg.hh
index 8b88e9dc14299795c67c9fe12448941ca5f98dd6..2e1cc231e680c83169f2c5ac38728b39dc95ae56 100644
--- a/source/blender/io/gpencil/intern/gpencil_io_export_svg.hh
+++ b/source/blender/io/gpencil/intern/gpencil_io_export_svg.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/gpencil/intern/gpencil_io_import_base.cc b/source/blender/io/gpencil/intern/gpencil_io_import_base.cc
index d0b6e20bda23502888299a58aaed35361f966469..c28a7be5f2b50d7a612548bd1aa623b76a599799 100644
--- a/source/blender/io/gpencil/intern/gpencil_io_import_base.cc
+++ b/source/blender/io/gpencil/intern/gpencil_io_import_base.cc
@@ -1,23 +1,7 @@
 
 
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bgpencil
diff --git a/source/blender/io/gpencil/intern/gpencil_io_import_base.hh b/source/blender/io/gpencil/intern/gpencil_io_import_base.hh
index 31ded8234c844a26536c68856154c62063407c21..86b17ca6ea974003d5d3615081e821a0ffaac0c9 100644
--- a/source/blender/io/gpencil/intern/gpencil_io_import_base.hh
+++ b/source/blender/io/gpencil/intern/gpencil_io_import_base.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/gpencil/intern/gpencil_io_import_svg.cc b/source/blender/io/gpencil/intern/gpencil_io_import_svg.cc
index 455ebb7c3cb25956fb72c895c8be501d8c532312..bad5c7d6401149049b5eee7ad44b501c21688384 100644
--- a/source/blender/io/gpencil/intern/gpencil_io_import_svg.cc
+++ b/source/blender/io/gpencil/intern/gpencil_io_import_svg.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bgpencil
diff --git a/source/blender/io/gpencil/intern/gpencil_io_import_svg.hh b/source/blender/io/gpencil/intern/gpencil_io_import_svg.hh
index 24e80563a142827c9bad0a03ed182ab0e5fdf6ae..f1f4e9a62909ffde770b38163080ce8cf6ce6b71 100644
--- a/source/blender/io/gpencil/intern/gpencil_io_import_svg.hh
+++ b/source/blender/io/gpencil/intern/gpencil_io_import_svg.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/io/usd/CMakeLists.txt b/source/blender/io/usd/CMakeLists.txt
index 980f33fffa129ea860dbb0c809668c0284a467d3..01d0cfcd302bff42c2f5dd9cc1d668f54440586d 100644
--- a/source/blender/io/usd/CMakeLists.txt
+++ b/source/blender/io/usd/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2019, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2019 Blender Foundation. All rights reserved.
 
 # This suppresses the warning "This file includes at least one deprecated or antiquated
 # header which may be removed without further notice at a future date", which is caused
diff --git a/source/blender/io/usd/intern/usd_capi_export.cc b/source/blender/io/usd/intern/usd_capi_export.cc
index 0cc3fde8c6ccd084fe258c830078f70f12420812..d7c1a5adc7c938ac79d1d70cfd4cc9227e61ca62 100644
--- a/source/blender/io/usd/intern/usd_capi_export.cc
+++ b/source/blender/io/usd/intern/usd_capi_export.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 #include "usd.h"
 #include "usd_common.h"
diff --git a/source/blender/io/usd/intern/usd_capi_import.cc b/source/blender/io/usd/intern/usd_capi_import.cc
index 789ff20ba826dcbad403f251f4fafc6532799c10..1f384bdf1275e74f9f81d66131d318136d45871a 100644
--- a/source/blender/io/usd/intern/usd_capi_import.cc
+++ b/source/blender/io/usd/intern/usd_capi_import.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 #include "IO_types.h"
 #include "usd.h"
diff --git a/source/blender/io/usd/intern/usd_common.cc b/source/blender/io/usd/intern/usd_common.cc
index 0cd9c3019ef6298efec2acc81cfa8e1ed5566d6e..2b6b6f4ed43a4b599de4d4d2c9426272a9d66b82 100644
--- a/source/blender/io/usd/intern/usd_common.cc
+++ b/source/blender/io/usd/intern/usd_common.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 #include "usd_common.h"
 
diff --git a/source/blender/io/usd/intern/usd_common.h b/source/blender/io/usd/intern/usd_common.h
index 36667bbc6b145c3d3df7f1128ddc36cda7b8c7b6..7de2da7eda4fd8a80543be162af7f9369f6d4904 100644
--- a/source/blender/io/usd/intern/usd_common.h
+++ b/source/blender/io/usd/intern/usd_common.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 #pragma once
 
 namespace blender::io::usd {
diff --git a/source/blender/io/usd/intern/usd_exporter_context.h b/source/blender/io/usd/intern/usd_exporter_context.h
index 66e87f0eed1b3832b048fcf9a88b8591066ff8f5..5a3f94d01f8fb0c200af613af46bae81c060a68a 100644
--- a/source/blender/io/usd/intern/usd_exporter_context.h
+++ b/source/blender/io/usd/intern/usd_exporter_context.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include "usd.h"
diff --git a/source/blender/io/usd/intern/usd_hierarchy_iterator.cc b/source/blender/io/usd/intern/usd_hierarchy_iterator.cc
index a9cba7f36d9f17f2dca37f3761b11cf287e6bc6a..a86deb7c9f04d2b393d303ec357e383e58d3c9ed 100644
--- a/source/blender/io/usd/intern/usd_hierarchy_iterator.cc
+++ b/source/blender/io/usd/intern/usd_hierarchy_iterator.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #include "usd.h"
 
 #include "usd_hierarchy_iterator.h"
diff --git a/source/blender/io/usd/intern/usd_hierarchy_iterator.h b/source/blender/io/usd/intern/usd_hierarchy_iterator.h
index cd19becbb0707aaae9e65216d66d52d82c77ddba..d5566103af44bf4dd7d9e83ac81647b0097cdfa7 100644
--- a/source/blender/io/usd/intern/usd_hierarchy_iterator.h
+++ b/source/blender/io/usd/intern/usd_hierarchy_iterator.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include "IO_abstract_hierarchy_iterator.h"
diff --git a/source/blender/io/usd/intern/usd_reader_camera.cc b/source/blender/io/usd/intern/usd_reader_camera.cc
index 1d001e1914066ef8468c0725fc30a1b80098d575..7f1e9fef89d79c5d5ebb965061ab8939f1922605 100644
--- a/source/blender/io/usd/intern/usd_reader_camera.cc
+++ b/source/blender/io/usd/intern/usd_reader_camera.cc
@@ -1,23 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Adapted from the Blender Alembic importer implementation.
- *
- * Modifications Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+ * Modifications Copyright 2021 Tangent Animation. All rights reserved. */
 
 #include "usd_reader_camera.h"
 
diff --git a/source/blender/io/usd/intern/usd_reader_camera.h b/source/blender/io/usd/intern/usd_reader_camera.h
index a4156aa8be27a95f4b3890ba79e74c5076f57df5..d7a742bdbadab8b4d3db9a848e5e879602b94903 100644
--- a/source/blender/io/usd/intern/usd_reader_camera.h
+++ b/source/blender/io/usd/intern/usd_reader_camera.h
@@ -1,23 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Adapted from the Blender Alembic importer implementation.
- *
- * Modifications Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+ * Modifications Copyright 2021 Tangent Animation. All rights reserved. */
 #pragma once
 
 #include "usd.h"
diff --git a/source/blender/io/usd/intern/usd_reader_curve.cc b/source/blender/io/usd/intern/usd_reader_curve.cc
index 5007d204020e09242481031e44cb58b1c8365d6e..e331030164ebffc978fe57499a41854a813d4c0e 100644
--- a/source/blender/io/usd/intern/usd_reader_curve.cc
+++ b/source/blender/io/usd/intern/usd_reader_curve.cc
@@ -1,24 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Adapted from the Blender Alembic importer implementation,
- * Copyright (C) 2016 Kévin Dietrich.
- *
- * Modifications Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Adapted from the Blender Alembic importer implementation. Copyright 2016 Kévin Dietrich.
+ * Modifications Copyright 2021 Tangent Animation. All rights reserved. */
 
 #include "usd_reader_curve.h"
 
diff --git a/source/blender/io/usd/intern/usd_reader_curve.h b/source/blender/io/usd/intern/usd_reader_curve.h
index 1e676bbbd02bc5afe2823d449e875a2fac6164db..1e9330b81f1f36593c9f1906e43954afbb44e4c2 100644
--- a/source/blender/io/usd/intern/usd_reader_curve.h
+++ b/source/blender/io/usd/intern/usd_reader_curve.h
@@ -1,24 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Adapted from the Blender Alembic importer implementation,
- * Copyright (C) 2016 Kévin Dietrich.
- *
- * Modifications Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Adapted from the Blender Alembic importer implementation. Copyright 2016 Kévin Dietrich.
+ * Modifications Copyright 2021 Tangent Animation. All rights reserved. */
 #pragma once
 
 #include "usd.h"
diff --git a/source/blender/io/usd/intern/usd_reader_geom.cc b/source/blender/io/usd/intern/usd_reader_geom.cc
index 23c5f57120c93c0238ae390df66010f17e4fbf77..1daceec8d4ba3eb8dd99d42f3fc497bc1e4735c0 100644
--- a/source/blender/io/usd/intern/usd_reader_geom.cc
+++ b/source/blender/io/usd/intern/usd_reader_geom.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Tangent Animation. All rights reserved. */
 
 #include "usd_reader_geom.h"
 
diff --git a/source/blender/io/usd/intern/usd_reader_geom.h b/source/blender/io/usd/intern/usd_reader_geom.h
index 99e22248f2b94d6a7a5ef43405051d2b2f3a3077..6dcad2ffac82fb6b54cf6c939739fc1f8643a8b6 100644
--- a/source/blender/io/usd/intern/usd_reader_geom.h
+++ b/source/blender/io/usd/intern/usd_reader_geom.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Tangent Animation. All rights reserved. */
 #pragma once
 
 #include "usd.h"
diff --git a/source/blender/io/usd/intern/usd_reader_light.cc b/source/blender/io/usd/intern/usd_reader_light.cc
index fda0c17968a2c6a1df1ae0587994f0ce88a3f6b0..649ff45a6d06f87fc5046b9dbd878bec63a4e5d6 100644
--- a/source/blender/io/usd/intern/usd_reader_light.cc
+++ b/source/blender/io/usd/intern/usd_reader_light.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Tangent Animation. All rights reserved. */
 
 #include "usd_reader_light.h"
 
diff --git a/source/blender/io/usd/intern/usd_reader_light.h b/source/blender/io/usd/intern/usd_reader_light.h
index e7860fd2c80b2c170099ebe87301b741d8186737..032ccefbbde22b6b8b03d4a7a645808326c6ac8e 100644
--- a/source/blender/io/usd/intern/usd_reader_light.h
+++ b/source/blender/io/usd/intern/usd_reader_light.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Tangent Animation. All rights reserved. */
 #pragma once
 
 #include "usd.h"
diff --git a/source/blender/io/usd/intern/usd_reader_material.cc b/source/blender/io/usd/intern/usd_reader_material.cc
index 645dea42971b8563f7640f809d9057153e764bc6..8feceee55ed8dc460e8590d4e391545370fb6149 100644
--- a/source/blender/io/usd/intern/usd_reader_material.cc
+++ b/source/blender/io/usd/intern/usd_reader_material.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 NVIDIA Corporation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 NVIDIA Corporation. All rights reserved. */
 
 #include "usd_reader_material.h"
 
diff --git a/source/blender/io/usd/intern/usd_reader_material.h b/source/blender/io/usd/intern/usd_reader_material.h
index fb40b4f2f6d017f33001b05423fe2204c9443642..0f922dca47f9e119ca2263ba2dc8629cf45a6530 100644
--- a/source/blender/io/usd/intern/usd_reader_material.h
+++ b/source/blender/io/usd/intern/usd_reader_material.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 NVIDIA Corporation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 NVIDIA Corporation. All rights reserved. */
 #pragma once
 
 #include "usd.h"
diff --git a/source/blender/io/usd/intern/usd_reader_mesh.cc b/source/blender/io/usd/intern/usd_reader_mesh.cc
index 10de47da0e30d2ee419e025a001f7bfdb20b7244..1f97c7b48b3bfac7e436ea7f5f2478121ade0920 100644
--- a/source/blender/io/usd/intern/usd_reader_mesh.cc
+++ b/source/blender/io/usd/intern/usd_reader_mesh.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Adapted from the Blender Alembic importer implementation.
  * Modifications Copyright 2021 Tangent Animation and
  * NVIDIA Corporation. All rights reserved. */
diff --git a/source/blender/io/usd/intern/usd_reader_mesh.h b/source/blender/io/usd/intern/usd_reader_mesh.h
index 0a1ab9a5fbec7aa4c7e7ba93f7c1c3a877fe4232..fdd814f56d4963fa93beb13f0144ae547a9d8981 100644
--- a/source/blender/io/usd/intern/usd_reader_mesh.h
+++ b/source/blender/io/usd/intern/usd_reader_mesh.h
@@ -1,23 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Adapted from the Blender Alembic importer implementation.
- *
- * Modifications Copyright (C) 2021 Tangent Animation and
- * NVIDIA Corporation. All rights reserved.
- */
+ * Modifications Copyright 2021 Tangent Animation and. NVIDIA Corporation. All rights reserved. */
 #pragma once
 
 #include "usd.h"
diff --git a/source/blender/io/usd/intern/usd_reader_nurbs.cc b/source/blender/io/usd/intern/usd_reader_nurbs.cc
index 8370804b7765394e487a16f109e254dac984f5cb..c7fd788e072a7b134bab691a5c282e5140314289 100644
--- a/source/blender/io/usd/intern/usd_reader_nurbs.cc
+++ b/source/blender/io/usd/intern/usd_reader_nurbs.cc
@@ -1,23 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Adapted from the Blender Alembic importer implementation.
- *
- * Modifications Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+ * Modifications Copyright 2021 Tangent Animation. All rights reserved. */
 
 #include "usd_reader_nurbs.h"
 
diff --git a/source/blender/io/usd/intern/usd_reader_nurbs.h b/source/blender/io/usd/intern/usd_reader_nurbs.h
index 33a4acf503ea44f5cc71ba610e6e800339f04bb6..a5441aad3cfceed56d3029b6d87f1277ddb22e88 100644
--- a/source/blender/io/usd/intern/usd_reader_nurbs.h
+++ b/source/blender/io/usd/intern/usd_reader_nurbs.h
@@ -1,23 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Adapted from the Blender Alembic importer implementation.
- *
- * Modifications Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+ * Modifications Copyright 2021 Tangent Animation. All rights reserved. */
 #pragma once
 
 #include "usd.h"
diff --git a/source/blender/io/usd/intern/usd_reader_prim.cc b/source/blender/io/usd/intern/usd_reader_prim.cc
index abd70f49f239c351d37a39fcb6c3e42fed5e5c7d..0819236a56ded6e642ca3f0c8e2b815da957c5ca 100644
--- a/source/blender/io/usd/intern/usd_reader_prim.cc
+++ b/source/blender/io/usd/intern/usd_reader_prim.cc
@@ -1,23 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Adapted from the Blender Alembic importer implementation.
- *
- * Modifications Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+ * Modifications Copyright 2021 Tangent Animation. All rights reserved. */
 
 #include "usd_reader_prim.h"
 
diff --git a/source/blender/io/usd/intern/usd_reader_prim.h b/source/blender/io/usd/intern/usd_reader_prim.h
index 5aff52f011f86fb47410778f05f0929e179857cf..fdf6247de16fd8c93edc3e20d07184447a8e5bae 100644
--- a/source/blender/io/usd/intern/usd_reader_prim.h
+++ b/source/blender/io/usd/intern/usd_reader_prim.h
@@ -1,23 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Adapted from the Blender Alembic importer implementation.
- *
- * Modifications Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+ * Modifications Copyright 2021 Tangent Animation. All rights reserved. */
 #pragma once
 
 #include "usd.h"
diff --git a/source/blender/io/usd/intern/usd_reader_stage.cc b/source/blender/io/usd/intern/usd_reader_stage.cc
index 9df5611bec97a3bcf1d4d9d719b556df2d573dc0..06f7d3ce3f5f83cb148e865e992685d54c8ee2cf 100644
--- a/source/blender/io/usd/intern/usd_reader_stage.cc
+++ b/source/blender/io/usd/intern/usd_reader_stage.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Tangent Animation and
- * NVIDIA Corporation. All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Tangent Animation and. NVIDIA Corporation. All rights reserved. */
 
 #include "usd_reader_stage.h"
 #include "usd_reader_camera.h"
diff --git a/source/blender/io/usd/intern/usd_reader_stage.h b/source/blender/io/usd/intern/usd_reader_stage.h
index df5f83067c1cab14a9af839d82525009b090a2a9..0ed964c767958d614a0edded5c5a6b0108aa62c2 100644
--- a/source/blender/io/usd/intern/usd_reader_stage.h
+++ b/source/blender/io/usd/intern/usd_reader_stage.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Tangent Animation and
- * NVIDIA Corporation. All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Tangent Animation and. NVIDIA Corporation. All rights reserved. */
 #pragma once
 
 struct Main;
diff --git a/source/blender/io/usd/intern/usd_reader_volume.cc b/source/blender/io/usd/intern/usd_reader_volume.cc
index 871f791c1dde28692ee6aa36019b58f87d890b55..aec30539ee6c3f589f67d3c832028964f266d6e2 100644
--- a/source/blender/io/usd/intern/usd_reader_volume.cc
+++ b/source/blender/io/usd/intern/usd_reader_volume.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Tangent Animation. All rights reserved. */
 
 #include "usd_reader_volume.h"
 
diff --git a/source/blender/io/usd/intern/usd_reader_volume.h b/source/blender/io/usd/intern/usd_reader_volume.h
index ca2fddb5531828067cf9189a7943961c32aea34d..350fae6ada04ac85145ba6f43c313bc91e2741ba 100644
--- a/source/blender/io/usd/intern/usd_reader_volume.h
+++ b/source/blender/io/usd/intern/usd_reader_volume.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Tangent Animation. All rights reserved. */
 #pragma once
 
 #include "usd.h"
diff --git a/source/blender/io/usd/intern/usd_reader_xform.cc b/source/blender/io/usd/intern/usd_reader_xform.cc
index eebcc5eb3d514ff98958cad8b731b98f623fdfeb..4cb7d4e1845305619bfe59c68563ee53ac34415a 100644
--- a/source/blender/io/usd/intern/usd_reader_xform.cc
+++ b/source/blender/io/usd/intern/usd_reader_xform.cc
@@ -1,23 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Adapted from the Blender Alembic importer implementation.
- *
- * Modifications Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+ * Modifications Copyright 2021 Tangent Animation. All rights reserved. */
 
 #include "usd_reader_xform.h"
 
diff --git a/source/blender/io/usd/intern/usd_reader_xform.h b/source/blender/io/usd/intern/usd_reader_xform.h
index 7720a054772e5250251c5e5a9c6c0e5667670b4a..0c0ec5202e51463ee74f322d5aa8b0e0bf6d2b15 100644
--- a/source/blender/io/usd/intern/usd_reader_xform.h
+++ b/source/blender/io/usd/intern/usd_reader_xform.h
@@ -1,23 +1,6 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Adapted from the Blender Alembic importer implementation.
- *
- * Modifications Copyright (C) 2021 Tangent Animation.
- * All rights reserved.
- */
+ * Modifications Copyright 2021 Tangent Animation. All rights reserved. */
 #pragma once
 
 #include "usd.h"
diff --git a/source/blender/io/usd/intern/usd_writer_abstract.cc b/source/blender/io/usd/intern/usd_writer_abstract.cc
index a358c563c88b7fbf5b19499bf9fcdc71b2903c27..dbeb9df1ee8fa1c6c556c85f3a3b9c1fbb48d8d2 100644
--- a/source/blender/io/usd/intern/usd_writer_abstract.cc
+++ b/source/blender/io/usd/intern/usd_writer_abstract.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #include "usd_writer_abstract.h"
 #include "usd_hierarchy_iterator.h"
 #include "usd_writer_material.h"
diff --git a/source/blender/io/usd/intern/usd_writer_abstract.h b/source/blender/io/usd/intern/usd_writer_abstract.h
index c67aa82426331fe9a9c4c2c9ca22c0af13d707d9..66feb6e10701db54e6b8c2bf1f18ecc9e7a6c50a 100644
--- a/source/blender/io/usd/intern/usd_writer_abstract.h
+++ b/source/blender/io/usd/intern/usd_writer_abstract.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include "IO_abstract_hierarchy_iterator.h"
diff --git a/source/blender/io/usd/intern/usd_writer_camera.cc b/source/blender/io/usd/intern/usd_writer_camera.cc
index 50d644241df5c9427ce0e152bc6dfaf782ef713b..404c41879b64f56c9a8335837733d2f4a45071b2 100644
--- a/source/blender/io/usd/intern/usd_writer_camera.cc
+++ b/source/blender/io/usd/intern/usd_writer_camera.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #include "usd_writer_camera.h"
 #include "usd_hierarchy_iterator.h"
 
diff --git a/source/blender/io/usd/intern/usd_writer_camera.h b/source/blender/io/usd/intern/usd_writer_camera.h
index f6d7e777f2f2fbe07091b868ecbd0e1094913614..6dc24f8052e44c701cfa7d087c4ac360c40a54f7 100644
--- a/source/blender/io/usd/intern/usd_writer_camera.h
+++ b/source/blender/io/usd/intern/usd_writer_camera.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include "usd_writer_abstract.h"
diff --git a/source/blender/io/usd/intern/usd_writer_hair.cc b/source/blender/io/usd/intern/usd_writer_hair.cc
index 5de8f3cefeff85a47f8b1474986b0b7c22c04669..478a9e2627427876d8275cdbf8c3cc9b4d0f4f77 100644
--- a/source/blender/io/usd/intern/usd_writer_hair.cc
+++ b/source/blender/io/usd/intern/usd_writer_hair.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #include "usd_writer_hair.h"
 #include "usd_hierarchy_iterator.h"
 
diff --git a/source/blender/io/usd/intern/usd_writer_hair.h b/source/blender/io/usd/intern/usd_writer_hair.h
index 8dc256fdb8eab442dbc1be410a468eac929f2155..230b25563ddb94711a5bcda736ce706d8adf3510 100644
--- a/source/blender/io/usd/intern/usd_writer_hair.h
+++ b/source/blender/io/usd/intern/usd_writer_hair.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include "usd_writer_abstract.h"
diff --git a/source/blender/io/usd/intern/usd_writer_light.cc b/source/blender/io/usd/intern/usd_writer_light.cc
index 7ffae1dd39893e426686dbd8061638fcd2ca1279..282393bbcd22f879f1ee4a4a2b10bc708a44a0fb 100644
--- a/source/blender/io/usd/intern/usd_writer_light.cc
+++ b/source/blender/io/usd/intern/usd_writer_light.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #include "usd_writer_light.h"
 #include "usd_hierarchy_iterator.h"
 
diff --git a/source/blender/io/usd/intern/usd_writer_light.h b/source/blender/io/usd/intern/usd_writer_light.h
index 9be82bfe21409aac011520ae7264d04dfb065afd..60d1866292680be30172afb6961e932050aa9e67 100644
--- a/source/blender/io/usd/intern/usd_writer_light.h
+++ b/source/blender/io/usd/intern/usd_writer_light.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include "usd_writer_abstract.h"
diff --git a/source/blender/io/usd/intern/usd_writer_material.cc b/source/blender/io/usd/intern/usd_writer_material.cc
index 5ce04339503c2a078799b080584911be2c7cf61a..6cdf6cc3b1977df6078af6029309b46651e3f597 100644
--- a/source/blender/io/usd/intern/usd_writer_material.cc
+++ b/source/blender/io/usd/intern/usd_writer_material.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "usd_writer_material.h"
 
diff --git a/source/blender/io/usd/intern/usd_writer_material.h b/source/blender/io/usd/intern/usd_writer_material.h
index 435ac41c4bf91ad74bf8d3d982ce0f7139925f9b..80b5626e3bd81c3d9ff62c3e7b094cfa1a54ef97 100644
--- a/source/blender/io/usd/intern/usd_writer_material.h
+++ b/source/blender/io/usd/intern/usd_writer_material.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 #include <pxr/pxr.h>
diff --git a/source/blender/io/usd/intern/usd_writer_mesh.cc b/source/blender/io/usd/intern/usd_writer_mesh.cc
index 1d3a5f5280d36ec4f3490b52472030a001f6b40c..b76f74cfd3d0917bf6f8ce227eb078b24c2ed97f 100644
--- a/source/blender/io/usd/intern/usd_writer_mesh.cc
+++ b/source/blender/io/usd/intern/usd_writer_mesh.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #include "usd_writer_mesh.h"
 #include "usd_hierarchy_iterator.h"
 
diff --git a/source/blender/io/usd/intern/usd_writer_mesh.h b/source/blender/io/usd/intern/usd_writer_mesh.h
index d60a6c4a59bffc17a6a935ace525f2c83d74238e..b33152e125cca2498537bfa11b0e92e8e9e5ff06 100644
--- a/source/blender/io/usd/intern/usd_writer_mesh.h
+++ b/source/blender/io/usd/intern/usd_writer_mesh.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include "usd_writer_abstract.h"
diff --git a/source/blender/io/usd/intern/usd_writer_metaball.cc b/source/blender/io/usd/intern/usd_writer_metaball.cc
index 28c96c3a51164c6c128b1d1e3ebf730a7784bcd1..b83dd1918691931cfe880152c337bce53d625d62 100644
--- a/source/blender/io/usd/intern/usd_writer_metaball.cc
+++ b/source/blender/io/usd/intern/usd_writer_metaball.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #include "usd_writer_metaball.h"
 #include "usd_hierarchy_iterator.h"
 
diff --git a/source/blender/io/usd/intern/usd_writer_metaball.h b/source/blender/io/usd/intern/usd_writer_metaball.h
index f82c001154e7ef87e1d6286673d5c2b3ead8bf69..91b6ba3a7142a2144c26fd0b66ca4c562a37f591 100644
--- a/source/blender/io/usd/intern/usd_writer_metaball.h
+++ b/source/blender/io/usd/intern/usd_writer_metaball.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include "usd_writer_mesh.h"
diff --git a/source/blender/io/usd/intern/usd_writer_transform.cc b/source/blender/io/usd/intern/usd_writer_transform.cc
index 136b5c477a2d53c4c51b41b43de4770f75b94804..96d80d4f904470507c64304afe700ca3846f5df3 100644
--- a/source/blender/io/usd/intern/usd_writer_transform.cc
+++ b/source/blender/io/usd/intern/usd_writer_transform.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #include "usd_writer_transform.h"
 #include "usd_hierarchy_iterator.h"
 
diff --git a/source/blender/io/usd/intern/usd_writer_transform.h b/source/blender/io/usd/intern/usd_writer_transform.h
index eba87b28faab67f7a0f232ed1c4ef5ec94b8d181..d285cd15985534a79b5bcbb1b0396768759b4d7b 100644
--- a/source/blender/io/usd/intern/usd_writer_transform.h
+++ b/source/blender/io/usd/intern/usd_writer_transform.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #pragma once
 
 #include "usd_writer_abstract.h"
diff --git a/source/blender/io/usd/tests/usd_stage_creation_test.cc b/source/blender/io/usd/tests/usd_stage_creation_test.cc
index 4dbe4c39104c155f681481df2aedf2f6c9804377..dbe5f8cd9ce3729065df870604b65d2ad9c77753 100644
--- a/source/blender/io/usd/tests/usd_stage_creation_test.cc
+++ b/source/blender/io/usd/tests/usd_stage_creation_test.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 #include "testing/testing.h"
 
 #include <pxr/base/plug/registry.h>
diff --git a/source/blender/io/usd/usd.h b/source/blender/io/usd/usd.h
index 505f917ede53faf710bb7a6bec29459624f00391..edc802159b19f8f1c0de5358a04870a4b14232b7 100644
--- a/source/blender/io/usd/usd.h
+++ b/source/blender/io/usd/usd.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/io/wavefront_obj/CMakeLists.txt b/source/blender/io/wavefront_obj/CMakeLists.txt
index 0b1be7946cfa10920f5c978d50d2b612217f82e5..8045d51e0da9b092a879470c61efc931e762abaf 100644
--- a/source/blender/io/wavefront_obj/CMakeLists.txt
+++ b/source/blender/io/wavefront_obj/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/source/blender/io/wavefront_obj/IO_wavefront_obj.cc b/source/blender/io/wavefront_obj/IO_wavefront_obj.cc
index 1c93eafe91a1a0f5f781fbc55ccb07ad56f46d04..cebdf33413e0028c19fa57578ba961003b5c4d35 100644
--- a/source/blender/io/wavefront_obj/IO_wavefront_obj.cc
+++ b/source/blender/io/wavefront_obj/IO_wavefront_obj.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup obj
diff --git a/source/blender/io/wavefront_obj/IO_wavefront_obj.h b/source/blender/io/wavefront_obj/IO_wavefront_obj.h
index 684eb3eda41909be8f257d4406b061d66db8307c..2a35fbdb7ad7bd2dd2e14c620f32b127d98493b3 100644
--- a/source/blender/io/wavefront_obj/IO_wavefront_obj.h
+++ b/source/blender/io/wavefront_obj/IO_wavefront_obj.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup obj
diff --git a/source/blender/io/wavefront_obj/exporter/obj_export_file_writer.cc b/source/blender/io/wavefront_obj/exporter/obj_export_file_writer.cc
index 87f87e37a7efe67e4736e01ae1563edb914e1e71..5631bdde2f83118ac1a6564161d895718040afbd 100644
--- a/source/blender/io/wavefront_obj/exporter/obj_export_file_writer.cc
+++ b/source/blender/io/wavefront_obj/exporter/obj_export_file_writer.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup obj
diff --git a/source/blender/io/wavefront_obj/exporter/obj_export_file_writer.hh b/source/blender/io/wavefront_obj/exporter/obj_export_file_writer.hh
index c88955e5090583b33b6179a3f5d9965e7e73fd90..6048c6d8d7b9bba9652937fdcc6dddd7f6728194 100644
--- a/source/blender/io/wavefront_obj/exporter/obj_export_file_writer.hh
+++ b/source/blender/io/wavefront_obj/exporter/obj_export_file_writer.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup obj
diff --git a/source/blender/io/wavefront_obj/exporter/obj_export_io.hh b/source/blender/io/wavefront_obj/exporter/obj_export_io.hh
index 1745169ff9878ba75597dac14cbcfbf53cac805b..7016dff2a292208bbd9141c90950864316002a50 100644
--- a/source/blender/io/wavefront_obj/exporter/obj_export_io.hh
+++ b/source/blender/io/wavefront_obj/exporter/obj_export_io.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup obj
diff --git a/source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc b/source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc
index 468631cdd82fa2ddececa4c199b73a5f64029ac1..17176a235c228840daec041877dfb39dbee2a6db 100644
--- a/source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc
+++ b/source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup obj
diff --git a/source/blender/io/wavefront_obj/exporter/obj_export_mesh.hh b/source/blender/io/wavefront_obj/exporter/obj_export_mesh.hh
index 4cfbffdcebc1360188d5e189b23f18b8e84abaea..9b9c8483464c6372e83ccddeac946bcd3fdacc9c 100644
--- a/source/blender/io/wavefront_obj/exporter/obj_export_mesh.hh
+++ b/source/blender/io/wavefront_obj/exporter/obj_export_mesh.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup obj
diff --git a/source/blender/io/wavefront_obj/exporter/obj_export_mtl.cc b/source/blender/io/wavefront_obj/exporter/obj_export_mtl.cc
index 3637a3f3c5f897506e0da963276fa0ec3a82031a..9d8d48507090697a210c2ef1e72ce8891361dc85 100644
--- a/source/blender/io/wavefront_obj/exporter/obj_export_mtl.cc
+++ b/source/blender/io/wavefront_obj/exporter/obj_export_mtl.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup obj
diff --git a/source/blender/io/wavefront_obj/exporter/obj_export_mtl.hh b/source/blender/io/wavefront_obj/exporter/obj_export_mtl.hh
index a84dcb80a480e738a329d56be2d8780f9bd863bf..80e3127f69f74bbee3910b4ec59eac2db550bde7 100644
--- a/source/blender/io/wavefront_obj/exporter/obj_export_mtl.hh
+++ b/source/blender/io/wavefront_obj/exporter/obj_export_mtl.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup obj
diff --git a/source/blender/io/wavefront_obj/exporter/obj_export_nurbs.cc b/source/blender/io/wavefront_obj/exporter/obj_export_nurbs.cc
index 8a6d3b4b93a3f7ac9ab6fa6a0b0fc093c9bf58e9..17069c1829579da68cbf68e86761d2f07057973d 100644
--- a/source/blender/io/wavefront_obj/exporter/obj_export_nurbs.cc
+++ b/source/blender/io/wavefront_obj/exporter/obj_export_nurbs.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup obj
diff --git a/source/blender/io/wavefront_obj/exporter/obj_export_nurbs.hh b/source/blender/io/wavefront_obj/exporter/obj_export_nurbs.hh
index d831afec0a0fa6d2b2bbd526b1a748c5674a7fea..fe826725daf8446a0bcb8ed16979ba487a01302c 100644
--- a/source/blender/io/wavefront_obj/exporter/obj_export_nurbs.hh
+++ b/source/blender/io/wavefront_obj/exporter/obj_export_nurbs.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup obj
diff --git a/source/blender/io/wavefront_obj/exporter/obj_exporter.cc b/source/blender/io/wavefront_obj/exporter/obj_exporter.cc
index 187f50277f11add3edc26d78949dc56be8e81baf..9ea75e6eb4cb4609f88da1a0bd06e595ab923088 100644
--- a/source/blender/io/wavefront_obj/exporter/obj_exporter.cc
+++ b/source/blender/io/wavefront_obj/exporter/obj_exporter.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup obj
diff --git a/source/blender/io/wavefront_obj/exporter/obj_exporter.hh b/source/blender/io/wavefront_obj/exporter/obj_exporter.hh
index a06898a21cf6e6a82b0b5b9ed51b2c82669ce5ad..9f9ec5a6083e49bd5aeca17df99822ab720b615c 100644
--- a/source/blender/io/wavefront_obj/exporter/obj_exporter.hh
+++ b/source/blender/io/wavefront_obj/exporter/obj_exporter.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup obj
diff --git a/source/blender/io/wavefront_obj/tests/obj_exporter_tests.cc b/source/blender/io/wavefront_obj/tests/obj_exporter_tests.cc
index 58329f63650a572db8a35108aa6b2394d7f5982d..cc1cca74a3889c7cf873de9b22e1a1433363dab1 100644
--- a/source/blender/io/wavefront_obj/tests/obj_exporter_tests.cc
+++ b/source/blender/io/wavefront_obj/tests/obj_exporter_tests.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include <gtest/gtest.h>
 #include <ios>
diff --git a/source/blender/io/wavefront_obj/tests/obj_exporter_tests.hh b/source/blender/io/wavefront_obj/tests/obj_exporter_tests.hh
index c101081ca54a603af881530aacf3ef39b845f72d..e4339a289a8da178ae40fab1180cb8c8dfda4aaa 100644
--- a/source/blender/io/wavefront_obj/tests/obj_exporter_tests.hh
+++ b/source/blender/io/wavefront_obj/tests/obj_exporter_tests.hh
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 /**
  * This file contains default values for several items like
diff --git a/source/blender/makesdna/CMakeLists.txt b/source/blender/makesdna/CMakeLists.txt
index e4e54aafa81e9c270d9860829c5ad1f028f01286..1a48b6e4928ec708fa1fe999c7d21a3331668a7e 100644
--- a/source/blender/makesdna/CMakeLists.txt
+++ b/source/blender/makesdna/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 if(WITH_FREESTYLE)
   add_definitions(-DWITH_FREESTYLE)
diff --git a/source/blender/makesdna/DNA_ID.h b/source/blender/makesdna/DNA_ID.h
index cfee35e147aba2e43ff060d6e591281fd7ec0af7..afe8901ccda6a6c34185a0190e2a01fa384cfe55 100644
--- a/source/blender/makesdna/DNA_ID.h
+++ b/source/blender/makesdna/DNA_ID.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_ID_enums.h b/source/blender/makesdna/DNA_ID_enums.h
index 839c1e8933f17bb35e98f7378ab9966011fec421..a6f950517eb24d810c0cadc7c42b87e0edd5ebc1 100644
--- a/source/blender/makesdna/DNA_ID_enums.h
+++ b/source/blender/makesdna/DNA_ID_enums.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_action_types.h b/source/blender/makesdna/DNA_action_types.h
index 1ca724b7108b70bdba99d81e135f1449f69d3453..2a6b86711ab7c0c3003b4199b7dba57ff867794f 100644
--- a/source/blender/makesdna/DNA_action_types.h
+++ b/source/blender/makesdna/DNA_action_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_anim_types.h b/source/blender/makesdna/DNA_anim_types.h
index bd9f9d8ec3df3fcb4beb7b7bb3d406b198c1e34f..5d3c8872d47de9a4b807a7c7d8ac4b0e62666178 100644
--- a/source/blender/makesdna/DNA_anim_types.h
+++ b/source/blender/makesdna/DNA_anim_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation, Joshua Leung. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_armature_defaults.h b/source/blender/makesdna/DNA_armature_defaults.h
index c8a54aaee3c64d3210ed3671bf6b845a6c17e34e..bc97c17c2e555572c28d7f60ce98e5e5a1196d31 100644
--- a/source/blender/makesdna/DNA_armature_defaults.h
+++ b/source/blender/makesdna/DNA_armature_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_armature_types.h b/source/blender/makesdna/DNA_armature_types.h
index 1005b5186aa49e222a83c0a3a16506388be89efc..f0ffb608942925413597d08546bb2eed2cc4abd5 100644
--- a/source/blender/makesdna/DNA_armature_types.h
+++ b/source/blender/makesdna/DNA_armature_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_asset_defaults.h b/source/blender/makesdna/DNA_asset_defaults.h
index ce01563f619036c524af66c4b551761dc02872c1..cef4c1270b88720ddace38b1e92269289cd2533f 100644
--- a/source/blender/makesdna/DNA_asset_defaults.h
+++ b/source/blender/makesdna/DNA_asset_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_asset_types.h b/source/blender/makesdna/DNA_asset_types.h
index bd604b90b5a2a9a01a20e59f8d835b256bfe104b..d49d0906aa745fe0da0f5305c34252fdbdcf2511 100644
--- a/source/blender/makesdna/DNA_asset_types.h
+++ b/source/blender/makesdna/DNA_asset_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_boid_types.h b/source/blender/makesdna/DNA_boid_types.h
index 02a4d87498a9fd3524f8e48a4f4f27bc1d8e0f79..664eb541466daa71dd3f893baec00e66c12d31f8 100644
--- a/source/blender/makesdna/DNA_boid_types.h
+++ b/source/blender/makesdna/DNA_boid_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 by Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_brush_defaults.h b/source/blender/makesdna/DNA_brush_defaults.h
index c3f171977a9462aa9df0e5172763d60307542198..530c056b5847e803580febcca3d10d98f4b9e85d 100644
--- a/source/blender/makesdna/DNA_brush_defaults.h
+++ b/source/blender/makesdna/DNA_brush_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_brush_enums.h b/source/blender/makesdna/DNA_brush_enums.h
index 2f41389f2c6d5812c2da0ec62a98f4026d996319..0667e508a8239642521d0d6d58f0b9a11922008e 100644
--- a/source/blender/makesdna/DNA_brush_enums.h
+++ b/source/blender/makesdna/DNA_brush_enums.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_brush_types.h b/source/blender/makesdna/DNA_brush_types.h
index 4976168a890b5218e10108fd483587a5062fffa8..77c493930296bb552965810cb97d3093c2a02b37 100644
--- a/source/blender/makesdna/DNA_brush_types.h
+++ b/source/blender/makesdna/DNA_brush_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_cachefile_defaults.h b/source/blender/makesdna/DNA_cachefile_defaults.h
index 74fbe5012ab6cd935df6ea6fd8d52559f9dc72a0..ea6be082a4e7b585837af6204ab3ec860af99aaf 100644
--- a/source/blender/makesdna/DNA_cachefile_defaults.h
+++ b/source/blender/makesdna/DNA_cachefile_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_cachefile_types.h b/source/blender/makesdna/DNA_cachefile_types.h
index 65e1dd6c09652106e98631069963cb73ff459b18..f54ad4359842e7a05ae3cac966b3d8b1037a1fdd 100644
--- a/source/blender/makesdna/DNA_cachefile_types.h
+++ b/source/blender/makesdna/DNA_cachefile_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_camera_defaults.h b/source/blender/makesdna/DNA_camera_defaults.h
index b0237caa5444527f4349b1145914068fad989529..e43d2732bf07849d0d9b481996bf18bd8d0dfd1a 100644
--- a/source/blender/makesdna/DNA_camera_defaults.h
+++ b/source/blender/makesdna/DNA_camera_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_camera_types.h b/source/blender/makesdna/DNA_camera_types.h
index 32ebcade76d9e67f4e45222b4807431caa137575..9b3adc4c8dd9e3df8aed145a8851464ebf44f967 100644
--- a/source/blender/makesdna/DNA_camera_types.h
+++ b/source/blender/makesdna/DNA_camera_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_cloth_types.h b/source/blender/makesdna/DNA_cloth_types.h
index 49b2862032f8557bc89d8f3ae49f6dbca22558aa..e79a53704c98b9017056feac2a655bf0cb9abc0e 100644
--- a/source/blender/makesdna/DNA_cloth_types.h
+++ b/source/blender/makesdna/DNA_cloth_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_collection_defaults.h b/source/blender/makesdna/DNA_collection_defaults.h
index 079c24b04db338cd2a2904c2a16a0a0a392e2b22..fc05aedfcd36409741b5eace28a9aa7dad9b7b68 100644
--- a/source/blender/makesdna/DNA_collection_defaults.h
+++ b/source/blender/makesdna/DNA_collection_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_collection_types.h b/source/blender/makesdna/DNA_collection_types.h
index 3eba02de2a36390e1faf7a78293513500e2ee39a..8c437d69028342c4f9e7494135c70d6a517456a6 100644
--- a/source/blender/makesdna/DNA_collection_types.h
+++ b/source/blender/makesdna/DNA_collection_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_color_types.h b/source/blender/makesdna/DNA_color_types.h
index debf2c3475ee2a66fffbdde32a1fbffc024c1794..623d1dd64408c9bd3d542d2f11be3b8f936502bf 100644
--- a/source/blender/makesdna/DNA_color_types.h
+++ b/source/blender/makesdna/DNA_color_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_constraint_types.h b/source/blender/makesdna/DNA_constraint_types.h
index b7ba05f587968370783129c07e0920a7eea3c3d3..eaae82d0ccdfb592cac3073213e7559df11b5010 100644
--- a/source/blender/makesdna/DNA_constraint_types.h
+++ b/source/blender/makesdna/DNA_constraint_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_curve_defaults.h b/source/blender/makesdna/DNA_curve_defaults.h
index 614653db2b85f65076d207a64fc6749f22656dbe..4d1b6a97791aef7e9c7b95b2620792b5220f358a 100644
--- a/source/blender/makesdna/DNA_curve_defaults.h
+++ b/source/blender/makesdna/DNA_curve_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_curve_types.h b/source/blender/makesdna/DNA_curve_types.h
index c1c8fe0612172ddf52e5294514e2b4ac7fc2fbbc..14a06f197bfb0e54c25fcb6045ccc25f184b7846 100644
--- a/source/blender/makesdna/DNA_curve_types.h
+++ b/source/blender/makesdna/DNA_curve_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_curveprofile_types.h b/source/blender/makesdna/DNA_curveprofile_types.h
index 447e94d265917af82c361212692888ddd8f07938..4b7e998a218ae66e51306ae31932d7e4809c4eb1 100644
--- a/source/blender/makesdna/DNA_curveprofile_types.h
+++ b/source/blender/makesdna/DNA_curveprofile_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_curves_defaults.h b/source/blender/makesdna/DNA_curves_defaults.h
index 66c7a1bd71bee415ad99f6934de976eaf22448e6..87063dbd83ff11590a92e7e039a8bd6eb080b20b 100644
--- a/source/blender/makesdna/DNA_curves_defaults.h
+++ b/source/blender/makesdna/DNA_curves_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_curves_types.h b/source/blender/makesdna/DNA_curves_types.h
index c7f31557e483d1a21cef4d8d5ba6ae28da1d9d59..03a587c896b62628208cead50f51e177af90e54e 100644
--- a/source/blender/makesdna/DNA_curves_types.h
+++ b/source/blender/makesdna/DNA_curves_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_customdata_types.h b/source/blender/makesdna/DNA_customdata_types.h
index 9c34d78c94498eac36a89ba161da1aa29d4d646c..234060331261424dabf126748ba554fffe5e01fa 100644
--- a/source/blender/makesdna/DNA_customdata_types.h
+++ b/source/blender/makesdna/DNA_customdata_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_defaults.h b/source/blender/makesdna/DNA_defaults.h
index ef7f573e7a8c263d9fb7cbbb06e58da9de3a49c2..d82f0f06de8dfbe801fdd6ab872b9a0836045679 100644
--- a/source/blender/makesdna/DNA_defaults.h
+++ b/source/blender/makesdna/DNA_defaults.h
@@ -1,22 +1,6 @@
 
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_defs.h b/source/blender/makesdna/DNA_defs.h
index ef476f2145860e56dbe2eac7bf38400e24f15843..b4230209dd574a321066c7b7a876fdb2de9ff754 100644
--- a/source/blender/makesdna/DNA_defs.h
+++ b/source/blender/makesdna/DNA_defs.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_documentation.h b/source/blender/makesdna/DNA_documentation.h
index 85190d8a56dd6c15bfdf6fc807d986ef644482a8..e72933063ae40c879be20717638f209a41836863 100644
--- a/source/blender/makesdna/DNA_documentation.h
+++ b/source/blender/makesdna/DNA_documentation.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_dynamicpaint_types.h b/source/blender/makesdna/DNA_dynamicpaint_types.h
index 5f3c54a0482a7e7fafb27580e4a6301fabcc37a1..eef3b59c20d90bef5ac9ce6e0f064e7216dc06f1 100644
--- a/source/blender/makesdna/DNA_dynamicpaint_types.h
+++ b/source/blender/makesdna/DNA_dynamicpaint_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_effect_types.h b/source/blender/makesdna/DNA_effect_types.h
index 2e086a2834c6efe6b9e7d4d45e80b2052d814dac..c87a56902f3a1e2e2022c13bd294343d06dea754 100644
--- a/source/blender/makesdna/DNA_effect_types.h
+++ b/source/blender/makesdna/DNA_effect_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_fileglobal_types.h b/source/blender/makesdna/DNA_fileglobal_types.h
index 3b6fb60cc2e31dddbe4e125884bf31695b065c90..0fcf232cdaab622da855d2c9c3af8097104c454e 100644
--- a/source/blender/makesdna/DNA_fileglobal_types.h
+++ b/source/blender/makesdna/DNA_fileglobal_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_fluid_defaults.h b/source/blender/makesdna/DNA_fluid_defaults.h
index 4135c4d40a82cf5156295e9614202e0c892228ac..fd48585792fd91f6b1183e6368dd0b109b803a00 100644
--- a/source/blender/makesdna/DNA_fluid_defaults.h
+++ b/source/blender/makesdna/DNA_fluid_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_fluid_types.h b/source/blender/makesdna/DNA_fluid_types.h
index d8065410f2bc9e7af2774c0abd3fcef920e46227..953a15f7502e2db8769d7ee8e222c7a087763623 100644
--- a/source/blender/makesdna/DNA_fluid_types.h
+++ b/source/blender/makesdna/DNA_fluid_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_freestyle_types.h b/source/blender/makesdna/DNA_freestyle_types.h
index ab1e7aa903c6a4960840782846466c0bdb92077d..fde735f8a5a267d20d04333fada464dda96fe854 100644
--- a/source/blender/makesdna/DNA_freestyle_types.h
+++ b/source/blender/makesdna/DNA_freestyle_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/makesdna/DNA_genfile.h b/source/blender/makesdna/DNA_genfile.h
index dd11865800382b8ddf0b90662c18bb9fada3e7e6..8ebd4b87a53de923b99c9f462dd619c19f4b522d 100644
--- a/source/blender/makesdna/DNA_genfile.h
+++ b/source/blender/makesdna/DNA_genfile.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_gpencil_modifier_defaults.h b/source/blender/makesdna/DNA_gpencil_modifier_defaults.h
index c51a615bfb6686b5153a0dc81bbc3e2dfc0a5f0b..3e06259dfd5289a90758a1e146e5598b9a79c5e3 100644
--- a/source/blender/makesdna/DNA_gpencil_modifier_defaults.h
+++ b/source/blender/makesdna/DNA_gpencil_modifier_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_gpencil_modifier_types.h b/source/blender/makesdna/DNA_gpencil_modifier_types.h
index b361372ff8b488475f21e6bbedb991c79b97767b..64099de5a5e8c4e9cb52530c9b47201f53159bc7 100644
--- a/source/blender/makesdna/DNA_gpencil_modifier_types.h
+++ b/source/blender/makesdna/DNA_gpencil_modifier_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_gpencil_types.h b/source/blender/makesdna/DNA_gpencil_types.h
index 727b8ea40e3a4953d6d9e4027ae56a00dd755e54..c0a9cc1ec4193838f0fae9d5f63bc8d4f196905f 100644
--- a/source/blender/makesdna/DNA_gpencil_types.h
+++ b/source/blender/makesdna/DNA_gpencil_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008, Blender Foundation.
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_gpu_types.h b/source/blender/makesdna/DNA_gpu_types.h
index 7d1e7d4e4f2afda5edef719f0ab9009d04502ed3..df1da9a20b9fd14a803868aace453fe1a07f1d01 100644
--- a/source/blender/makesdna/DNA_gpu_types.h
+++ b/source/blender/makesdna/DNA_gpu_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_image_defaults.h b/source/blender/makesdna/DNA_image_defaults.h
index 93ff8792dfa9f0080e9f9644a79b9764b823bea7..52df8c869cfdb28789ee79b00967b0641864a2f2 100644
--- a/source/blender/makesdna/DNA_image_defaults.h
+++ b/source/blender/makesdna/DNA_image_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_image_types.h b/source/blender/makesdna/DNA_image_types.h
index 7a789227128a997bb84fc84c23bd915fbed1fb47..39a53b06d4cb7c12bb479297c7c04e8c9206fb42 100644
--- a/source/blender/makesdna/DNA_image_types.h
+++ b/source/blender/makesdna/DNA_image_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_ipo_types.h b/source/blender/makesdna/DNA_ipo_types.h
index e2fdd19232cf2d88ef0a4e609497883b89f0483e..f40fb55e72ec73a6d86f139d3b539f48c0665eff 100644
--- a/source/blender/makesdna/DNA_ipo_types.h
+++ b/source/blender/makesdna/DNA_ipo_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_key_types.h b/source/blender/makesdna/DNA_key_types.h
index 228a1024721a3fa00707a5f077c6aa9cf59f7995..455f871c224ebfc4e9f46df61cc81a8bfe899713 100644
--- a/source/blender/makesdna/DNA_key_types.h
+++ b/source/blender/makesdna/DNA_key_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/makesdna/DNA_lattice_defaults.h b/source/blender/makesdna/DNA_lattice_defaults.h
index 505b853b0ee3020a72d67785e4aba56ae36f9999..26f8c87631027449db945978500af6749296c9ae 100644
--- a/source/blender/makesdna/DNA_lattice_defaults.h
+++ b/source/blender/makesdna/DNA_lattice_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_lattice_types.h b/source/blender/makesdna/DNA_lattice_types.h
index 361893db89345abefe4486aff841a67a1c6626ba..b2775aa771a1ef041492eb0f526fb12074b4b4c5 100644
--- a/source/blender/makesdna/DNA_lattice_types.h
+++ b/source/blender/makesdna/DNA_lattice_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_layer_types.h b/source/blender/makesdna/DNA_layer_types.h
index 63e4597150ca708baa3d10f4ec6dc3faaa5cbdf7..465ec6e7db561e47d8c728c2357a6db7314ee23f 100644
--- a/source/blender/makesdna/DNA_layer_types.h
+++ b/source/blender/makesdna/DNA_layer_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_light_defaults.h b/source/blender/makesdna/DNA_light_defaults.h
index 5e5ce4bf540c04729edf556c55dbc3323f7a9278..7b03a51a727327c832f664398c99e5587bec4131 100644
--- a/source/blender/makesdna/DNA_light_defaults.h
+++ b/source/blender/makesdna/DNA_light_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_light_types.h b/source/blender/makesdna/DNA_light_types.h
index 5ec82a68a2d23c0269dab51cbd16f84cd3519e14..e78a381603b4aca013b8b4fe0764161e715c335e 100644
--- a/source/blender/makesdna/DNA_light_types.h
+++ b/source/blender/makesdna/DNA_light_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_lightprobe_defaults.h b/source/blender/makesdna/DNA_lightprobe_defaults.h
index 4de94b81b97e65d1ac1db90265fdfe4a45fdf5af..6446b55409c92ef8d563061dc0427be666410c63 100644
--- a/source/blender/makesdna/DNA_lightprobe_defaults.h
+++ b/source/blender/makesdna/DNA_lightprobe_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_lightprobe_types.h b/source/blender/makesdna/DNA_lightprobe_types.h
index 1a3bda34a8441ddb609fc8172c323eb4adaaa01f..d6afaf33052557829a65e3a39bb4f22db09c999c 100644
--- a/source/blender/makesdna/DNA_lightprobe_types.h
+++ b/source/blender/makesdna/DNA_lightprobe_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_lineart_types.h b/source/blender/makesdna/DNA_lineart_types.h
index 3e77d566d274a07afcdca818b03c4432fb208333..2e446427cc3ceaa4492bc6a639a0c1e1d697ed86 100644
--- a/source/blender/makesdna/DNA_lineart_types.h
+++ b/source/blender/makesdna/DNA_lineart_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/makesdna/DNA_linestyle_defaults.h b/source/blender/makesdna/DNA_linestyle_defaults.h
index 47405b4a15f953de1776b150366eb82aa4896734..907f17665c71a90601b2f61b4445748cd2be40c3 100644
--- a/source/blender/makesdna/DNA_linestyle_defaults.h
+++ b/source/blender/makesdna/DNA_linestyle_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_linestyle_types.h b/source/blender/makesdna/DNA_linestyle_types.h
index d83e24c5117980443be535381275b6137084b1e9..b8279e7f2ca0d6d185672fddae39cdcd9154dcfd 100644
--- a/source/blender/makesdna/DNA_linestyle_types.h
+++ b/source/blender/makesdna/DNA_linestyle_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/makesdna/DNA_listBase.h b/source/blender/makesdna/DNA_listBase.h
index 0c4054004ea1cf87ee7cfa7cf83bfa4b1cc82cfb..bdec790af8c2309b8a7d524e1ce4f937a67d02fc 100644
--- a/source/blender/makesdna/DNA_listBase.h
+++ b/source/blender/makesdna/DNA_listBase.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_mask_types.h b/source/blender/makesdna/DNA_mask_types.h
index 419118a38f4348e74fdccb21d179375df01bbe61..8efcef5addfc4527bfa4f0820068100031c4f69f 100644
--- a/source/blender/makesdna/DNA_mask_types.h
+++ b/source/blender/makesdna/DNA_mask_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_material_defaults.h b/source/blender/makesdna/DNA_material_defaults.h
index 3fa87800b2ed5fea7390c0ca4d5a33c022d643d0..29f526fc5c2c79b12e3cffa7f449ade2e46177ee 100644
--- a/source/blender/makesdna/DNA_material_defaults.h
+++ b/source/blender/makesdna/DNA_material_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_material_types.h b/source/blender/makesdna/DNA_material_types.h
index 5d682d963ab658df2a3a2f5b5fcf6d7f8106b52d..e83e68a091b32a5697e2448133b07d51e89281b8 100644
--- a/source/blender/makesdna/DNA_material_types.h
+++ b/source/blender/makesdna/DNA_material_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_mesh_defaults.h b/source/blender/makesdna/DNA_mesh_defaults.h
index 889f92eec957e8d657a9094dd88b4d5a87ff1530..079bda42009fc700ed919df4b6d84305cb28d536 100644
--- a/source/blender/makesdna/DNA_mesh_defaults.h
+++ b/source/blender/makesdna/DNA_mesh_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_mesh_types.h b/source/blender/makesdna/DNA_mesh_types.h
index bf50100b3020c3a509f7270dde1b989a543b2958..c566ad933351ad4241d25a3595a4fb7b7507a619 100644
--- a/source/blender/makesdna/DNA_mesh_types.h
+++ b/source/blender/makesdna/DNA_mesh_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_meshdata_types.h b/source/blender/makesdna/DNA_meshdata_types.h
index d568b8c14a961752117ddbf1b648c8ffa1ddc453..3a7de6860ee8151bf891cf84632f31255726e794 100644
--- a/source/blender/makesdna/DNA_meshdata_types.h
+++ b/source/blender/makesdna/DNA_meshdata_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_meta_defaults.h b/source/blender/makesdna/DNA_meta_defaults.h
index 1bf2caf556d748ca0674c9bc2b5794bc55afad1a..4ac692d4a10b9dfad698409c1b6cd157b0f7fecb 100644
--- a/source/blender/makesdna/DNA_meta_defaults.h
+++ b/source/blender/makesdna/DNA_meta_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_meta_types.h b/source/blender/makesdna/DNA_meta_types.h
index e489ba7d7ac5412874393418f64eae102a1b5c74..519dfb7e9b31e9ed4fa07797ad940a744e630b26 100644
--- a/source/blender/makesdna/DNA_meta_types.h
+++ b/source/blender/makesdna/DNA_meta_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_modifier_defaults.h b/source/blender/makesdna/DNA_modifier_defaults.h
index 78ab41031a67849cd8114c3492e2bba10ec9bb2a..41cc8048de188c9e0fb04aa0a261d3a3c7ce8a47 100644
--- a/source/blender/makesdna/DNA_modifier_defaults.h
+++ b/source/blender/makesdna/DNA_modifier_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_modifier_types.h b/source/blender/makesdna/DNA_modifier_types.h
index 8e38d52a4d71eac8ef74e1807f8965e7a9151f10..db5a3d69e4d23b3c82b642cf33de83c6128a8610 100644
--- a/source/blender/makesdna/DNA_modifier_types.h
+++ b/source/blender/makesdna/DNA_modifier_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_movieclip_defaults.h b/source/blender/makesdna/DNA_movieclip_defaults.h
index 441c22310095fdf0a55deacee3378432e12dab52..422b7e7758794459242cae56646d372a968ede21 100644
--- a/source/blender/makesdna/DNA_movieclip_defaults.h
+++ b/source/blender/makesdna/DNA_movieclip_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_movieclip_types.h b/source/blender/makesdna/DNA_movieclip_types.h
index 08064e6242b896274213f81630fb7673383bcba0..a262baf6a2b09661f9466b907eec098a380b5ac9 100644
--- a/source/blender/makesdna/DNA_movieclip_types.h
+++ b/source/blender/makesdna/DNA_movieclip_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_nla_types.h b/source/blender/makesdna/DNA_nla_types.h
index 82edc0e18163bef79cca6c34e30300795b9dd966..e36eeefb0a0e143ae8f3cf4675a0c099393d83db 100644
--- a/source/blender/makesdna/DNA_nla_types.h
+++ b/source/blender/makesdna/DNA_nla_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_node_types.h b/source/blender/makesdna/DNA_node_types.h
index fd77e8b9f1df4abfaab02de3b0a644d68597170a..963a34aa6452e726b077759746788efec2419310 100644
--- a/source/blender/makesdna/DNA_node_types.h
+++ b/source/blender/makesdna/DNA_node_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_object_defaults.h b/source/blender/makesdna/DNA_object_defaults.h
index d545b7912c0c3f2efe0a52baea898245ebef23d5..14683869bc46e0f2db6f97c77aa05cfe948acef4 100644
--- a/source/blender/makesdna/DNA_object_defaults.h
+++ b/source/blender/makesdna/DNA_object_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_object_enums.h b/source/blender/makesdna/DNA_object_enums.h
index ee30be934cacac696c6e83d3fc3270332020c54b..ce9b97284bcd789716b486f471241f54eb312642 100644
--- a/source/blender/makesdna/DNA_object_enums.h
+++ b/source/blender/makesdna/DNA_object_enums.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_object_fluidsim_types.h b/source/blender/makesdna/DNA_object_fluidsim_types.h
index 1198983c8980d33a315fd139fe3df1920a0d7ee8..e09341b12451917e54800acc928ce26b0c466ae1 100644
--- a/source/blender/makesdna/DNA_object_fluidsim_types.h
+++ b/source/blender/makesdna/DNA_object_fluidsim_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004-2005 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004-2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_object_force_types.h b/source/blender/makesdna/DNA_object_force_types.h
index 7d0d4c0d46085c3586bcc038ad0383c178accf73..c51ff8a63f7d8e93198a6eb6e5a87a4b59880dc9 100644
--- a/source/blender/makesdna/DNA_object_force_types.h
+++ b/source/blender/makesdna/DNA_object_force_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004-2005 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004-2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_object_types.h b/source/blender/makesdna/DNA_object_types.h
index ca8696d13268e116613ea2a15f6df4fa166c24ff..96c60fcac9715925c7a507b169a6dc1e3ba286d2 100644
--- a/source/blender/makesdna/DNA_object_types.h
+++ b/source/blender/makesdna/DNA_object_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_outliner_types.h b/source/blender/makesdna/DNA_outliner_types.h
index 71a5c0eb2e5e0ab0f860ba89ec0688310b4b38be..4a2e3e1ab727313e1a1d27c3726b5344da87379d 100644
--- a/source/blender/makesdna/DNA_outliner_types.h
+++ b/source/blender/makesdna/DNA_outliner_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_packedFile_types.h b/source/blender/makesdna/DNA_packedFile_types.h
index 91c7de6bf3ea4c82fdcea3bac145fd528b0b96f1..659e0962d1e30dfd0673edc883c2129b80809ab6 100644
--- a/source/blender/makesdna/DNA_packedFile_types.h
+++ b/source/blender/makesdna/DNA_packedFile_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_particle_defaults.h b/source/blender/makesdna/DNA_particle_defaults.h
index 85971b8e9b7045dfaed5f9f4ccf5986cc7452b40..138aa6f1f986d0c5c8125a60e5e998a2e8b4359c 100644
--- a/source/blender/makesdna/DNA_particle_defaults.h
+++ b/source/blender/makesdna/DNA_particle_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_particle_types.h b/source/blender/makesdna/DNA_particle_types.h
index 5add664f62405562c3acb4375ed313978b26259e..397385c0f5b6c29ebbc2d086c260e99bba0a54e7 100644
--- a/source/blender/makesdna/DNA_particle_types.h
+++ b/source/blender/makesdna/DNA_particle_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 by Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_pointcache_types.h b/source/blender/makesdna/DNA_pointcache_types.h
index 2b6e1c4f7de5597566c356741de1e84c8310c075..b247176f5370f4c12b5a8d4422084cb314e2ada1 100644
--- a/source/blender/makesdna/DNA_pointcache_types.h
+++ b/source/blender/makesdna/DNA_pointcache_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_pointcloud_defaults.h b/source/blender/makesdna/DNA_pointcloud_defaults.h
index b5c9396b1ddfe0cb5d3c9c9e20f99a86ff613d76..53cd9b958b37da3c04be6f45c20b8ba3f135b038 100644
--- a/source/blender/makesdna/DNA_pointcloud_defaults.h
+++ b/source/blender/makesdna/DNA_pointcloud_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_pointcloud_types.h b/source/blender/makesdna/DNA_pointcloud_types.h
index 53fda29a33a0059eb9bc229feb0bcd0c1d621542..1cb490190c30582eb3686deeb07208d3f62dda58 100644
--- a/source/blender/makesdna/DNA_pointcloud_types.h
+++ b/source/blender/makesdna/DNA_pointcloud_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_rigidbody_types.h b/source/blender/makesdna/DNA_rigidbody_types.h
index f653905e169ba82419d9dae0551f451bca359e21..c00900bb44ca99e9f8de7cb09b94ea29de68239b 100644
--- a/source/blender/makesdna/DNA_rigidbody_types.h
+++ b/source/blender/makesdna/DNA_rigidbody_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_scene_defaults.h b/source/blender/makesdna/DNA_scene_defaults.h
index 7ba054e3133ae1b2763bbbd071e4de711fbf8975..82f788e06231675146bdba9554d69fa0f329a417 100644
--- a/source/blender/makesdna/DNA_scene_defaults.h
+++ b/source/blender/makesdna/DNA_scene_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_scene_types.h b/source/blender/makesdna/DNA_scene_types.h
index 864358e040c1a8d47d7a2cc92248687ac60684d5..a3e4551a865ff4711a808a5682992f6fb4f7a174 100644
--- a/source/blender/makesdna/DNA_scene_types.h
+++ b/source/blender/makesdna/DNA_scene_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_screen_types.h b/source/blender/makesdna/DNA_screen_types.h
index 1a1d7cba7af45a3b173c321a3c22c24e7c1be529..d48149b2fa65df42250821e36811509f76420cb6 100644
--- a/source/blender/makesdna/DNA_screen_types.h
+++ b/source/blender/makesdna/DNA_screen_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_sdna_types.h b/source/blender/makesdna/DNA_sdna_types.h
index 39ec8fcecb6f7254b17f4bfd0dd8728ba5547ec1..1316c39548877424a43986d754552d93f5c2b975 100644
--- a/source/blender/makesdna/DNA_sdna_types.h
+++ b/source/blender/makesdna/DNA_sdna_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 /** \file
  * \ingroup DNA
  */
diff --git a/source/blender/makesdna/DNA_sequence_types.h b/source/blender/makesdna/DNA_sequence_types.h
index 622175a84297406e94ffe879a5255892d2278131..86d9867973ae8ccb8d31cdf2fa2975e2ecf6b6e9 100644
--- a/source/blender/makesdna/DNA_sequence_types.h
+++ b/source/blender/makesdna/DNA_sequence_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 /** \file
  * \ingroup DNA
  *
diff --git a/source/blender/makesdna/DNA_session_uuid_types.h b/source/blender/makesdna/DNA_session_uuid_types.h
index eaaae101277685aafdc5a1c1bd43eac196ebc566..6f5246cdd3dda21fc8922236b223115023aa4b22 100644
--- a/source/blender/makesdna/DNA_session_uuid_types.h
+++ b/source/blender/makesdna/DNA_session_uuid_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_shader_fx_types.h b/source/blender/makesdna/DNA_shader_fx_types.h
index be787c1760fbfbaacc465cf13b535e22e74ee6fb..918ff5834ff106796813cabe0b8a3de36d8885a4 100644
--- a/source/blender/makesdna/DNA_shader_fx_types.h
+++ b/source/blender/makesdna/DNA_shader_fx_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_simulation_defaults.h b/source/blender/makesdna/DNA_simulation_defaults.h
index 48d35d5e81f514771af1793adc5453cfeab3b12d..3b6f891d54e48e9988b49f33311094b8e8f3ed3e 100644
--- a/source/blender/makesdna/DNA_simulation_defaults.h
+++ b/source/blender/makesdna/DNA_simulation_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_simulation_types.h b/source/blender/makesdna/DNA_simulation_types.h
index b14301ed32d2b4b9679e45b70d2905d9723f0d12..4b2df1ddbfb4556befeada04b91b22d7fef03009 100644
--- a/source/blender/makesdna/DNA_simulation_types.h
+++ b/source/blender/makesdna/DNA_simulation_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_sound_types.h b/source/blender/makesdna/DNA_sound_types.h
index e6394f0a56a11ed16f28cddffbb0424a77ec0a45..df59dd84662da5ed647dcecc1c499507aceef2c9 100644
--- a/source/blender/makesdna/DNA_sound_types.h
+++ b/source/blender/makesdna/DNA_sound_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 /** \file
  * \ingroup DNA
  */
diff --git a/source/blender/makesdna/DNA_space_defaults.h b/source/blender/makesdna/DNA_space_defaults.h
index 785abb39cc91baa533879f944d68a61540faac60..e826cb4c2ef7674e02c3a9172a487f5a085966bd 100644
--- a/source/blender/makesdna/DNA_space_defaults.h
+++ b/source/blender/makesdna/DNA_space_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_space_types.h b/source/blender/makesdna/DNA_space_types.h
index 4e12f135242279597f294b6375ea2de58b03b128..ad7f8cc1e406735144af69d62d90a2d7356b3c62 100644
--- a/source/blender/makesdna/DNA_space_types.h
+++ b/source/blender/makesdna/DNA_space_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 /** \file
  * \ingroup DNA
  *
diff --git a/source/blender/makesdna/DNA_speaker_defaults.h b/source/blender/makesdna/DNA_speaker_defaults.h
index a14e4d687d36ba1066b7b5b0f7a4a557a087c130..2f3fe14f3e23e498156258baf2180421fedcc4a3 100644
--- a/source/blender/makesdna/DNA_speaker_defaults.h
+++ b/source/blender/makesdna/DNA_speaker_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_speaker_types.h b/source/blender/makesdna/DNA_speaker_types.h
index 29cccd1ef3aebf73ded2a99b05d076a99b5f8671..233e16d6aa819bacac03ac82a9ebd20f46999496 100644
--- a/source/blender/makesdna/DNA_speaker_types.h
+++ b/source/blender/makesdna/DNA_speaker_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_text_types.h b/source/blender/makesdna/DNA_text_types.h
index f63389bccf92eda939187f6b63dd1ea1eb6c2d03..362c7eae3cb06eb3a883828a64e2e67ddad17aba 100644
--- a/source/blender/makesdna/DNA_text_types.h
+++ b/source/blender/makesdna/DNA_text_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 /** \file
  * \ingroup DNA
  *
diff --git a/source/blender/makesdna/DNA_texture_defaults.h b/source/blender/makesdna/DNA_texture_defaults.h
index 1e790709fd1c973a50d8df9ef382dcd1256afdca..70de8756215f221c9a5e30bb1fe9ef4a4d8e4335 100644
--- a/source/blender/makesdna/DNA_texture_defaults.h
+++ b/source/blender/makesdna/DNA_texture_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_texture_types.h b/source/blender/makesdna/DNA_texture_types.h
index cd19825d29fb2985269043ae104d8f8e7a39e66b..dab3a1b331eb232d2782ebf2b7d57fea3498f793 100644
--- a/source/blender/makesdna/DNA_texture_types.h
+++ b/source/blender/makesdna/DNA_texture_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_tracking_types.h b/source/blender/makesdna/DNA_tracking_types.h
index 815fab59876fdd2ed04244a731337d07bf5f588b..e252ed73d30935241a5e280589df27ed0c1ea7bf 100644
--- a/source/blender/makesdna/DNA_tracking_types.h
+++ b/source/blender/makesdna/DNA_tracking_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_userdef_types.h b/source/blender/makesdna/DNA_userdef_types.h
index d1b015485c9e997bc6bf43b4f0f6ce21da296a46..59b17c5c7c4db689411481d5994865c0c8327573 100644
--- a/source/blender/makesdna/DNA_userdef_types.h
+++ b/source/blender/makesdna/DNA_userdef_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_uuid_types.h b/source/blender/makesdna/DNA_uuid_types.h
index dcebfed6be77fa055dd4560f57971acc89eb0313..35c7d5947e4e14c850c1fea8134e3f8bc0961cc5 100644
--- a/source/blender/makesdna/DNA_uuid_types.h
+++ b/source/blender/makesdna/DNA_uuid_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_vec_defaults.h b/source/blender/makesdna/DNA_vec_defaults.h
index 3b980db78388081f02f5116fbd269d5624233b1c..1b7d3a95f0935c44b3a63fe131eae40d4510ce4a 100644
--- a/source/blender/makesdna/DNA_vec_defaults.h
+++ b/source/blender/makesdna/DNA_vec_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_vec_types.h b/source/blender/makesdna/DNA_vec_types.h
index 0e3117c7f582cff2ecc78d20bd8d4b96ab6eb09f..f053efff2b4ab8644a666ccd83422aaa9ef71364 100644
--- a/source/blender/makesdna/DNA_vec_types.h
+++ b/source/blender/makesdna/DNA_vec_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_vfont_types.h b/source/blender/makesdna/DNA_vfont_types.h
index e782f7914b5454a8f5a5602f9a2eb28051384d46..42be4dc63ccd7068e7ab733aa2ca5818c62c4ce7 100644
--- a/source/blender/makesdna/DNA_vfont_types.h
+++ b/source/blender/makesdna/DNA_vfont_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_view2d_types.h b/source/blender/makesdna/DNA_view2d_types.h
index 6c03422963dbd89497c0a40df31efc5eb6688174..c8498f096eda374db9488c41ef460aeac416b319 100644
--- a/source/blender/makesdna/DNA_view2d_types.h
+++ b/source/blender/makesdna/DNA_view2d_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_view3d_defaults.h b/source/blender/makesdna/DNA_view3d_defaults.h
index 870197a401c9b99bf803b904f73502f7a8f9759a..b2d17b0ea22d10b71acf9c06bbe9d345f2e33829 100644
--- a/source/blender/makesdna/DNA_view3d_defaults.h
+++ b/source/blender/makesdna/DNA_view3d_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_view3d_enums.h b/source/blender/makesdna/DNA_view3d_enums.h
index 59012a0cd8d8f384da352e410e434cf5405c39ec..f22adc5a46227ed16f44f3cbc72925f6cad074f5 100644
--- a/source/blender/makesdna/DNA_view3d_enums.h
+++ b/source/blender/makesdna/DNA_view3d_enums.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_view3d_types.h b/source/blender/makesdna/DNA_view3d_types.h
index dafae6f2eb70120209a94eb233d053913cf56112..8554d070dc3c681a66f3c7c1424bacb9ff3bec98 100644
--- a/source/blender/makesdna/DNA_view3d_types.h
+++ b/source/blender/makesdna/DNA_view3d_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_volume_defaults.h b/source/blender/makesdna/DNA_volume_defaults.h
index a710754659b9155edf2d350b75393a971b22dba8..2025d664d40fa33642eb09e5452fbdcbdeb67de2 100644
--- a/source/blender/makesdna/DNA_volume_defaults.h
+++ b/source/blender/makesdna/DNA_volume_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_volume_types.h b/source/blender/makesdna/DNA_volume_types.h
index df5a122faaf8d2e15300c3c959ddc109407a0f6e..f2f53bc910f7c61282cbfa3e89e071e6d076be19 100644
--- a/source/blender/makesdna/DNA_volume_types.h
+++ b/source/blender/makesdna/DNA_volume_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_windowmanager_types.h b/source/blender/makesdna/DNA_windowmanager_types.h
index d0e4184d2a568d84f899194b9a6866977a5342cd..626c2b2a81f77db0b95d7290a28b873470ee5144 100644
--- a/source/blender/makesdna/DNA_windowmanager_types.h
+++ b/source/blender/makesdna/DNA_windowmanager_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_workspace_types.h b/source/blender/makesdna/DNA_workspace_types.h
index 95530c7b0f718b21a700d96b77f64029cc53788d..b8ed39bfd5d0022ec34ed19623e3ddd68aafdc34 100644
--- a/source/blender/makesdna/DNA_workspace_types.h
+++ b/source/blender/makesdna/DNA_workspace_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_world_defaults.h b/source/blender/makesdna/DNA_world_defaults.h
index 52c9551a63ed02a9803f4cdbe07d492c2defe567..bb786f0c6ef89d1a9fce8535fa9475042dc4db58 100644
--- a/source/blender/makesdna/DNA_world_defaults.h
+++ b/source/blender/makesdna/DNA_world_defaults.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_world_types.h b/source/blender/makesdna/DNA_world_types.h
index d1132efc7a97129599fe75b6fa1a4d327acdcd33..497b99eb04d6fd61fc0d2fceeee4e9936f1a70f2 100644
--- a/source/blender/makesdna/DNA_world_types.h
+++ b/source/blender/makesdna/DNA_world_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/DNA_xr_types.h b/source/blender/makesdna/DNA_xr_types.h
index f7da912f299b91310a583d4c76f999c2dec5f21c..bf77339a4944a39e555fb1dd43d8edd1a170c6f4 100644
--- a/source/blender/makesdna/DNA_xr_types.h
+++ b/source/blender/makesdna/DNA_xr_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/intern/CMakeLists.txt b/source/blender/makesdna/intern/CMakeLists.txt
index af30fa5cc9e9f7b398c0494393c03041aa3d333c..e507831424f9123d6e33cc61a098e13130e1590e 100644
--- a/source/blender/makesdna/intern/CMakeLists.txt
+++ b/source/blender/makesdna/intern/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 # message(STATUS "Configuring makesdna")
 
diff --git a/source/blender/makesdna/intern/dna_defaults.c b/source/blender/makesdna/intern/dna_defaults.c
index 93d8051d6c48fcfe52a1ccca975a79feadc28883..b7f942e25027815295234e58e773c3243013b17b 100644
--- a/source/blender/makesdna/intern/dna_defaults.c
+++ b/source/blender/makesdna/intern/dna_defaults.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/intern/dna_genfile.c b/source/blender/makesdna/intern/dna_genfile.c
index 634aa91cf953dca527fada3f804693c7bcf575e8..f43cf02c0b8e0a115a151cc2e1688a1e395686fa 100644
--- a/source/blender/makesdna/intern/dna_genfile.c
+++ b/source/blender/makesdna/intern/dna_genfile.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/intern/dna_rename_defs.h b/source/blender/makesdna/intern/dna_rename_defs.h
index b666a5dce56a399fb7a37db8a04c4205a1f5cdd2..7b155df30844b98567984c37aa46bb92a6a43f7f 100644
--- a/source/blender/makesdna/intern/dna_rename_defs.h
+++ b/source/blender/makesdna/intern/dna_rename_defs.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/intern/dna_utils.c b/source/blender/makesdna/intern/dna_utils.c
index b2e2e263ea3a622ed178283e25354ae05b5447f4..8c86ef69ebd705db6db3d9755ae5fc82796c6536 100644
--- a/source/blender/makesdna/intern/dna_utils.c
+++ b/source/blender/makesdna/intern/dna_utils.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright (C) 2018 Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/intern/dna_utils.h b/source/blender/makesdna/intern/dna_utils.h
index e161e317c42f0a46e7d1a991bdcd81556de08c88..9710fb9fae4462590b1635e1eebe61d3a5f9ce28 100644
--- a/source/blender/makesdna/intern/dna_utils.h
+++ b/source/blender/makesdna/intern/dna_utils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesdna/intern/makesdna.c b/source/blender/makesdna/intern/makesdna.c
index 5156203b71ffaa5367830dd1f25a785c1944feef..0d2f265a9b5ad777e20cc6c9fc92e061b715f182 100644
--- a/source/blender/makesdna/intern/makesdna.c
+++ b/source/blender/makesdna/intern/makesdna.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup DNA
diff --git a/source/blender/makesrna/CMakeLists.txt b/source/blender/makesrna/CMakeLists.txt
index 0f6550b145333a8684e72f47a2c9fbfd629e1f38..2579763204e706a8f3caedc984e9771a59552214 100644
--- a/source/blender/makesrna/CMakeLists.txt
+++ b/source/blender/makesrna/CMakeLists.txt
@@ -1,21 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 add_subdirectory(intern)
diff --git a/source/blender/makesrna/RNA_access.h b/source/blender/makesrna/RNA_access.h
index 47afa0f9a13d32f853667f8e2867ee7f2b6392c2..5441cf44ac9b307cee5fa4b0e676b875587c4158 100644
--- a/source/blender/makesrna/RNA_access.h
+++ b/source/blender/makesrna/RNA_access.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /* Use a define instead of `#pragma once` because of `rna_internal.h` */
 #ifndef __RNA_ACCESS_H__
diff --git a/source/blender/makesrna/RNA_define.h b/source/blender/makesrna/RNA_define.h
index ca534316c396eedee7969ad6ab2f1a272f8fdda2..13a5ec66a16be7bf8344f1b1f9604844acaae99a 100644
--- a/source/blender/makesrna/RNA_define.h
+++ b/source/blender/makesrna/RNA_define.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/makesrna/RNA_documentation.h b/source/blender/makesrna/RNA_documentation.h
index cf1cf5fa50e2ce53bf5eafc00ed7c09fe998cbeb..07548e5a940cecd8921c298c94d4f973484f0227 100644
--- a/source/blender/makesrna/RNA_documentation.h
+++ b/source/blender/makesrna/RNA_documentation.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/RNA_enum_items.h b/source/blender/makesrna/RNA_enum_items.h
index baa9ddba1be0184b225d29a5f4e94cb45fcba3e7..4b68416f5d7825d266e3af21fcc163bcb0ac531d 100644
--- a/source/blender/makesrna/RNA_enum_items.h
+++ b/source/blender/makesrna/RNA_enum_items.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/RNA_enum_types.h b/source/blender/makesrna/RNA_enum_types.h
index fcae1009c8b0a5a5a8d94219bc882fba138b6219..d6fb4027168a24aaf368ca71c420a8fa368a935f 100644
--- a/source/blender/makesrna/RNA_enum_types.h
+++ b/source/blender/makesrna/RNA_enum_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/makesrna/RNA_types.h b/source/blender/makesrna/RNA_types.h
index e37eb9f7188239356a9258a7c82ca298e3812438..74bcc95d1dd6d01774813f78f4266980febf5dd3 100644
--- a/source/blender/makesrna/RNA_types.h
+++ b/source/blender/makesrna/RNA_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/CMakeLists.txt b/source/blender/makesrna/intern/CMakeLists.txt
index 91d7c5a13948852a56206c00a96f2e455156a24c..953c959dcd08ac7821d174de003ceaea6ea1dcd2 100644
--- a/source/blender/makesrna/intern/CMakeLists.txt
+++ b/source/blender/makesrna/intern/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 if(CMAKE_COMPILER_IS_GNUCC)
   # add here so we fail early.
diff --git a/source/blender/makesrna/intern/makesrna.c b/source/blender/makesrna/intern/makesrna.c
index 0fadbda5a181e89afa6e280ae51f90ec3493d6fc..01a6108fd8c7287435597fca823f55e7bfbee425 100644
--- a/source/blender/makesrna/intern/makesrna.c
+++ b/source/blender/makesrna/intern/makesrna.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_ID.c b/source/blender/makesrna/intern/rna_ID.c
index e7f885b2160ad21ae2a1afbaef9b6f345ee144e4..90e979e9fbefbbc5153ff222eb832986bcb90633 100644
--- a/source/blender/makesrna/intern/rna_ID.c
+++ b/source/blender/makesrna/intern/rna_ID.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_access.c b/source/blender/makesrna/intern/rna_access.c
index 63eb016b5de48f58aa976c2604f85fa8e914ce9e..8189dc6b16f22e1ff36fc9b2001fa284635abd5e 100644
--- a/source/blender/makesrna/intern/rna_access.c
+++ b/source/blender/makesrna/intern/rna_access.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_access_compare_override.c b/source/blender/makesrna/intern/rna_access_compare_override.c
index 950eccdb5523aeba038009b59a6449e2d2254b0a..1aa51c93ee8befdc4050732c202db95402edb05e 100644
--- a/source/blender/makesrna/intern/rna_access_compare_override.c
+++ b/source/blender/makesrna/intern/rna_access_compare_override.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_access_internal.h b/source/blender/makesrna/intern/rna_access_internal.h
index 9f1be5bbd67e484c57626337cf73dd12735b6b6b..a7dd35af6708b96e6b1e6294b898b5739ad36453 100644
--- a/source/blender/makesrna/intern/rna_access_internal.h
+++ b/source/blender/makesrna/intern/rna_access_internal.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_action.c b/source/blender/makesrna/intern/rna_action.c
index f4236a860ab65b9167364b2e914c8d0d2d27368b..11d5298dfd787cfd7e555d3bc2145c1c35f1ec34 100644
--- a/source/blender/makesrna/intern/rna_action.c
+++ b/source/blender/makesrna/intern/rna_action.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_action_api.c b/source/blender/makesrna/intern/rna_action_api.c
index 308a34f9cf114337eacfac653c86142ba348e078..4fa9a88b41170a2adc38099e894cfbd1e09ed870 100644
--- a/source/blender/makesrna/intern/rna_action_api.c
+++ b/source/blender/makesrna/intern/rna_action_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_animation.c b/source/blender/makesrna/intern/rna_animation.c
index 9068fdb6e72ee0a4d83a274b0d680ea1de59b386..ba7f3c55460c20e821f842dfc5e5d982fdc46a7c 100644
--- a/source/blender/makesrna/intern/rna_animation.c
+++ b/source/blender/makesrna/intern/rna_animation.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_animation_api.c b/source/blender/makesrna/intern/rna_animation_api.c
index fba523c9f89968375affd07cf7088d35190e9709..5efc039a524f917916349038366932a4aeab77eb 100644
--- a/source/blender/makesrna/intern/rna_animation_api.c
+++ b/source/blender/makesrna/intern/rna_animation_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_animviz.c b/source/blender/makesrna/intern/rna_animviz.c
index 0525d2f6fb1ae9a3e8568d33ecd6bb98591c849a..cb993931296b01dcc1391360939dddb43d1fae15 100644
--- a/source/blender/makesrna/intern/rna_animviz.c
+++ b/source/blender/makesrna/intern/rna_animviz.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_armature.c b/source/blender/makesrna/intern/rna_armature.c
index b22d3654431ec17cd3a89e4cbe4110f7b3739e29..11c4dad15e94d1b22b5622af40d5e421a4dd4d9b 100644
--- a/source/blender/makesrna/intern/rna_armature.c
+++ b/source/blender/makesrna/intern/rna_armature.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_armature_api.c b/source/blender/makesrna/intern/rna_armature_api.c
index 7d165ce045df1ae69355c197eec73b40e3437665..eb46e697044d19038b741543e7e38f838677d780 100644
--- a/source/blender/makesrna/intern/rna_armature_api.c
+++ b/source/blender/makesrna/intern/rna_armature_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_asset.c b/source/blender/makesrna/intern/rna_asset.c
index e80c85590200b9b8ebb24e7e9ad58a8f593ca22f..f919cfbeffdbee3dce1d9b3e5c4a6ca5664ce8a6 100644
--- a/source/blender/makesrna/intern/rna_asset.c
+++ b/source/blender/makesrna/intern/rna_asset.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_attribute.c b/source/blender/makesrna/intern/rna_attribute.c
index dc0d00aaa77a161fbc14c566ed2ba3f1b7e3acc8..f86383a63280e89c8008159cba3cba3f700e9e82 100644
--- a/source/blender/makesrna/intern/rna_attribute.c
+++ b/source/blender/makesrna/intern/rna_attribute.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_boid.c b/source/blender/makesrna/intern/rna_boid.c
index 40a64ffccd10c7bcc45fd2bdb92bcd61e83fc180..0818f009d1f9b7108d4fceba3e2a3517b7f9a538 100644
--- a/source/blender/makesrna/intern/rna_boid.c
+++ b/source/blender/makesrna/intern/rna_boid.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 by Janne Karhu.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 by Janne Karhu. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_brush.c b/source/blender/makesrna/intern/rna_brush.c
index b4cf15ebfc6e5946022b330432352cc48af776e7..7ba2b3a450225279092fadd9b7d39296b235349f 100644
--- a/source/blender/makesrna/intern/rna_brush.c
+++ b/source/blender/makesrna/intern/rna_brush.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_cachefile.c b/source/blender/makesrna/intern/rna_cachefile.c
index 2f8fc004d85d751fd040fc432e9b0ee337e0ba08..62b08ebb281ec437b2eede3e9b3b61d7f2e346d8 100644
--- a/source/blender/makesrna/intern/rna_cachefile.c
+++ b/source/blender/makesrna/intern/rna_cachefile.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_camera.c b/source/blender/makesrna/intern/rna_camera.c
index d218f92e639ae2f5d66a78c4a7c566635188ca54..0378e64290b7783179b1f816a0305901294fb6e6 100644
--- a/source/blender/makesrna/intern/rna_camera.c
+++ b/source/blender/makesrna/intern/rna_camera.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_camera_api.c b/source/blender/makesrna/intern/rna_camera_api.c
index 49271f95056074b88a5ffeca630950b15f11a43a..c3601bcd72c55e4e5576b80a3fef16e90fef3aaf 100644
--- a/source/blender/makesrna/intern/rna_camera_api.c
+++ b/source/blender/makesrna/intern/rna_camera_api.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_cloth.c b/source/blender/makesrna/intern/rna_cloth.c
index 187e232b0300048f1483398709c3fad789f3eb64..4ee57017841f19c91ad0d7b2d9f6b80052ea41c6 100644
--- a/source/blender/makesrna/intern/rna_cloth.c
+++ b/source/blender/makesrna/intern/rna_cloth.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_collection.c b/source/blender/makesrna/intern/rna_collection.c
index 77276f47689b9ee2a5bace3d9f23b72316bf0c2c..eceabe65a6737b19bf690ac2858bd8cc8734ea65 100644
--- a/source/blender/makesrna/intern/rna_collection.c
+++ b/source/blender/makesrna/intern/rna_collection.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_color.c b/source/blender/makesrna/intern/rna_color.c
index b12ec4651b4dc878004f66cbb34ad60c4775ece4..31b67d4eb19103ebce527bceba0b1e4b63272007 100644
--- a/source/blender/makesrna/intern/rna_color.c
+++ b/source/blender/makesrna/intern/rna_color.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_constraint.c b/source/blender/makesrna/intern/rna_constraint.c
index e3a06c44eee9d7728169dc9b7c61b614b25cba9d..edcf121a8c4b356153a5a620eec349e6663b0e1e 100644
--- a/source/blender/makesrna/intern/rna_constraint.c
+++ b/source/blender/makesrna/intern/rna_constraint.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_context.c b/source/blender/makesrna/intern/rna_context.c
index 70fb10c54b04193e91d9e2925914d4ec86a0d10a..772562d95753ef45fd038637dfc3be658142bf3c 100644
--- a/source/blender/makesrna/intern/rna_context.c
+++ b/source/blender/makesrna/intern/rna_context.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_curve.c b/source/blender/makesrna/intern/rna_curve.c
index 86ed0f307c412328990f95fb5e5e52e21cb4e277..b37a6e5fd0e158d5ef39e8e5ec21c393fb2e093d 100644
--- a/source/blender/makesrna/intern/rna_curve.c
+++ b/source/blender/makesrna/intern/rna_curve.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_curve_api.c b/source/blender/makesrna/intern/rna_curve_api.c
index beea607e8c00916740542f89e44c252011ba476d..d0086a425a21db49b4f45571f0326cee02b6ffe3 100644
--- a/source/blender/makesrna/intern/rna_curve_api.c
+++ b/source/blender/makesrna/intern/rna_curve_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_curveprofile.c b/source/blender/makesrna/intern/rna_curveprofile.c
index 66c0fc72c7a8d55e97984fb51fe6c2a3d5cb4ee3..8aa358e074d0979781a90742bafa68ab64bf18f1 100644
--- a/source/blender/makesrna/intern/rna_curveprofile.c
+++ b/source/blender/makesrna/intern/rna_curveprofile.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_curves.c b/source/blender/makesrna/intern/rna_curves.c
index faa067000bbccddc9c3c8533af663aaa153d6170..8e7fb415c7d34dd60cc3de582a616dcbee695036 100644
--- a/source/blender/makesrna/intern/rna_curves.c
+++ b/source/blender/makesrna/intern/rna_curves.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_define.c b/source/blender/makesrna/intern/rna_define.c
index b17ca7d8d5965ffc2585c4257803e90a47b1e30b..850accd0b249fdd76220388acfad1116c2af1766 100644
--- a/source/blender/makesrna/intern/rna_define.c
+++ b/source/blender/makesrna/intern/rna_define.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_depsgraph.c b/source/blender/makesrna/intern/rna_depsgraph.c
index 58565fecf4d5c801120f24c30420faf9ec137130..6196f8d1ca006e554a4f4ee4de1646f6cb8fb05b 100644
--- a/source/blender/makesrna/intern/rna_depsgraph.c
+++ b/source/blender/makesrna/intern/rna_depsgraph.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_dynamicpaint.c b/source/blender/makesrna/intern/rna_dynamicpaint.c
index b693d78a302e7449605de51f58ac165674f41fc2..d81e44791f44f8ed7374e0e5bc673817d554970b 100644
--- a/source/blender/makesrna/intern/rna_dynamicpaint.c
+++ b/source/blender/makesrna/intern/rna_dynamicpaint.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_fcurve.c b/source/blender/makesrna/intern/rna_fcurve.c
index 0e2b64fbca40888f7212048e497164ef5487d26f..f24803af654e43aab5b429cdc2c67407daf28f1a 100644
--- a/source/blender/makesrna/intern/rna_fcurve.c
+++ b/source/blender/makesrna/intern/rna_fcurve.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_fcurve_api.c b/source/blender/makesrna/intern/rna_fcurve_api.c
index 5a720b91f874adaa7453114f4bb841bb86fd6642..448065cdcf169674a17ad0139f6c94308eb636f9 100644
--- a/source/blender/makesrna/intern/rna_fcurve_api.c
+++ b/source/blender/makesrna/intern/rna_fcurve_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_fluid.c b/source/blender/makesrna/intern/rna_fluid.c
index 7aa96eb8430a1ebebb5227be1cfae9a8025a8169..ce0598d355d2a2bc7b2153863fae060e18818484 100644
--- a/source/blender/makesrna/intern/rna_fluid.c
+++ b/source/blender/makesrna/intern/rna_fluid.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_gpencil.c b/source/blender/makesrna/intern/rna_gpencil.c
index ab887422d58adccba9ea5e77ef0596741dc8a0be..e78340346993f75c4dcdeaab65f9325e9535791c 100644
--- a/source/blender/makesrna/intern/rna_gpencil.c
+++ b/source/blender/makesrna/intern/rna_gpencil.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_gpencil_modifier.c b/source/blender/makesrna/intern/rna_gpencil_modifier.c
index e4e594cd8cf6d5659652931bbd2390ecdca34527..6a0e5156234b5ccc50a5074b5c2e2339d2fcb62f 100644
--- a/source/blender/makesrna/intern/rna_gpencil_modifier.c
+++ b/source/blender/makesrna/intern/rna_gpencil_modifier.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_image.c b/source/blender/makesrna/intern/rna_image.c
index 9edd52762eae0d2cb77238f18d6d273b123e8b7f..8adb9267769b66b6a8b42eccccdb1d79bcce25a3 100644
--- a/source/blender/makesrna/intern/rna_image.c
+++ b/source/blender/makesrna/intern/rna_image.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_image_api.c b/source/blender/makesrna/intern/rna_image_api.c
index 1c04805be8bb5c25b5614fa41ad77234b01c593d..92e3254765c91e76b6d4c46fed8c855d04782bfa 100644
--- a/source/blender/makesrna/intern/rna_image_api.c
+++ b/source/blender/makesrna/intern/rna_image_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_internal.h b/source/blender/makesrna/intern/rna_internal.h
index 407f474ddabbf492dcb4a5acc640388e00966051..2c5f264f7e905d9a65967233a6065dcee3b04221 100644
--- a/source/blender/makesrna/intern/rna_internal.h
+++ b/source/blender/makesrna/intern/rna_internal.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_internal_types.h b/source/blender/makesrna/intern/rna_internal_types.h
index 723ae384fdfdaed31f09d5482d5f5c91b930d5ba..24d50a0300f66dd822105f4ec2d7e65e52797b8c 100644
--- a/source/blender/makesrna/intern/rna_internal_types.h
+++ b/source/blender/makesrna/intern/rna_internal_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_key.c b/source/blender/makesrna/intern/rna_key.c
index c7a1c89af635cf6a76910e80fee70e9c9b0cec33..51dcfd13657dd5a1d18dffc99e0a4ab26e4d12cc 100644
--- a/source/blender/makesrna/intern/rna_key.c
+++ b/source/blender/makesrna/intern/rna_key.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_lattice.c b/source/blender/makesrna/intern/rna_lattice.c
index 707799e563330087bef09e92bc9f5fdc4ccaf0d2..8fb36c035b7138187f51fba875f183205333b5ef 100644
--- a/source/blender/makesrna/intern/rna_lattice.c
+++ b/source/blender/makesrna/intern/rna_lattice.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_lattice_api.c b/source/blender/makesrna/intern/rna_lattice_api.c
index 5b69a743d47a90cb2b0f823fde321f30b23a037c..20f9fc6fa5625937528dad66e9a071096c7e38d3 100644
--- a/source/blender/makesrna/intern/rna_lattice_api.c
+++ b/source/blender/makesrna/intern/rna_lattice_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_layer.c b/source/blender/makesrna/intern/rna_layer.c
index 278d611cc415445428e78cff35c2634b54983bb6..42414a9931b853e8f533de9ac04f33333721206f 100644
--- a/source/blender/makesrna/intern/rna_layer.c
+++ b/source/blender/makesrna/intern/rna_layer.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_light.c b/source/blender/makesrna/intern/rna_light.c
index 003eebd8cc882f102358d5398d8d2e684371ffc2..a9e33b8cea647960faf212c398705e6183b228a9 100644
--- a/source/blender/makesrna/intern/rna_light.c
+++ b/source/blender/makesrna/intern/rna_light.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_lightprobe.c b/source/blender/makesrna/intern/rna_lightprobe.c
index d448bdd9401efad64e296237976331db8ecca094..51ec89f1e29a931d2c91ba3e21ac29e095145080 100644
--- a/source/blender/makesrna/intern/rna_lightprobe.c
+++ b/source/blender/makesrna/intern/rna_lightprobe.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_linestyle.c b/source/blender/makesrna/intern/rna_linestyle.c
index 93e8e4bc31ecb815bf2ae667f8a3df6752cb7931..2a8a3a76c6d16cd2c688a39f834c3d29b3d2cfe1 100644
--- a/source/blender/makesrna/intern/rna_linestyle.c
+++ b/source/blender/makesrna/intern/rna_linestyle.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_main.c b/source/blender/makesrna/intern/rna_main.c
index 230c04bfd9c6c0faae5552753c78fe67d0b6cafd..7200bcaa2a6dff6528361bf4d1365083bcc39f2e 100644
--- a/source/blender/makesrna/intern/rna_main.c
+++ b/source/blender/makesrna/intern/rna_main.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_main_api.c b/source/blender/makesrna/intern/rna_main_api.c
index f8d2d6524c2636f27bb728bb3bc61cf4c57abf6b..e9d39d708a946e7690d873ea02f1cc60e9edfce9 100644
--- a/source/blender/makesrna/intern/rna_main_api.c
+++ b/source/blender/makesrna/intern/rna_main_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_mask.c b/source/blender/makesrna/intern/rna_mask.c
index 21bacf2e6bed077a3b37ebfdbaf8b9c85dfc2ff1..e8b8c6e32743cabfd310c7fb31a38fca3253af58 100644
--- a/source/blender/makesrna/intern/rna_mask.c
+++ b/source/blender/makesrna/intern/rna_mask.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_material.c b/source/blender/makesrna/intern/rna_material.c
index 6dea0dbbf7dfdebb096cca46fcb0985527df8687..fc3baa65ef68e93bb133fb34328ad5d5098548a5 100644
--- a/source/blender/makesrna/intern/rna_material.c
+++ b/source/blender/makesrna/intern/rna_material.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_material_api.c b/source/blender/makesrna/intern/rna_material_api.c
index 5f89664458c1e1b7e5bc256a175119d7425d8b77..12ba8c6491bd6abc580819a0ab2736a2dc6fb656 100644
--- a/source/blender/makesrna/intern/rna_material_api.c
+++ b/source/blender/makesrna/intern/rna_material_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_mesh.c b/source/blender/makesrna/intern/rna_mesh.c
index 55b70fd1b41d9f4188504dfaf1190498d621a40d..6b3ae373295f7b382eee4e74167137929bb04b67 100644
--- a/source/blender/makesrna/intern/rna_mesh.c
+++ b/source/blender/makesrna/intern/rna_mesh.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /* NOTE: the original vertex color stuff is now just used for
  * getting info on the layers themselves, accessing the data is
diff --git a/source/blender/makesrna/intern/rna_mesh_api.c b/source/blender/makesrna/intern/rna_mesh_api.c
index 9835d664a557bffd9b418f769e27f264822951d9..ebacced8b3fbe964c98a5a664256cde9b14571d3 100644
--- a/source/blender/makesrna/intern/rna_mesh_api.c
+++ b/source/blender/makesrna/intern/rna_mesh_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_mesh_utils.h b/source/blender/makesrna/intern/rna_mesh_utils.h
index 5e11be382ecfde89234c247e21830f9dbf35bbab..0b1a8ddcb4dff17d4374cf9251ece291bc66f96e 100644
--- a/source/blender/makesrna/intern/rna_mesh_utils.h
+++ b/source/blender/makesrna/intern/rna_mesh_utils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_meta.c b/source/blender/makesrna/intern/rna_meta.c
index d5018a6911d5af6ca9a0c15bf874ba8e1a8c1dc0..f160388c5d2170eea47a3d28a986bf3da390d0bd 100644
--- a/source/blender/makesrna/intern/rna_meta.c
+++ b/source/blender/makesrna/intern/rna_meta.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_meta_api.c b/source/blender/makesrna/intern/rna_meta_api.c
index 93bd9fe3b9c68b05910cf3a7b5a61e91263e0f90..6595c811abcb33935463df36c467e149b00b2755 100644
--- a/source/blender/makesrna/intern/rna_meta_api.c
+++ b/source/blender/makesrna/intern/rna_meta_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_modifier.c b/source/blender/makesrna/intern/rna_modifier.c
index 957b92f204a7b9c964847567b13a36bb233b16e8..45d22981205c3980edb710a261d8af4e9dee8444 100644
--- a/source/blender/makesrna/intern/rna_modifier.c
+++ b/source/blender/makesrna/intern/rna_modifier.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_movieclip.c b/source/blender/makesrna/intern/rna_movieclip.c
index 4344c6dbb65824a44706f4c07f625a0e7ca4c0bd..e9b49dbe7d1bcf04e866e5126ad9cb8c1bb73d13 100644
--- a/source/blender/makesrna/intern/rna_movieclip.c
+++ b/source/blender/makesrna/intern/rna_movieclip.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_nla.c b/source/blender/makesrna/intern/rna_nla.c
index 230133a8f9db90f12c5775f2dfc0616f5a6162a5..f8a35246581b695e53f58333ed7dc676c7df0870 100644
--- a/source/blender/makesrna/intern/rna_nla.c
+++ b/source/blender/makesrna/intern/rna_nla.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index bd74f86c79ace11ee8a6094f52251509d354e595..3ae9ab3cec23560eec9347236573b60d9ecb1b6d 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_object.c b/source/blender/makesrna/intern/rna_object.c
index be37e574c9cca241ba27e6cff4b651f4b6b06305..83a0672beced1e666b0462c2239d36ddd523ad0f 100644
--- a/source/blender/makesrna/intern/rna_object.c
+++ b/source/blender/makesrna/intern/rna_object.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_object_api.c b/source/blender/makesrna/intern/rna_object_api.c
index dbf9b7577284464aca6c8ad7f45ed78fe77a549c..9676be69d05d368831c8f88754e7b2f9dfa62931 100644
--- a/source/blender/makesrna/intern/rna_object_api.c
+++ b/source/blender/makesrna/intern/rna_object_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_object_force.c b/source/blender/makesrna/intern/rna_object_force.c
index d697a48e04bb1e7b167d7a35c98a877a16a3a44e..9ca78033199bea0254e5712563e0d733e6cff9e2 100644
--- a/source/blender/makesrna/intern/rna_object_force.c
+++ b/source/blender/makesrna/intern/rna_object_force.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_packedfile.c b/source/blender/makesrna/intern/rna_packedfile.c
index 8319612ea91cd6c34258da3ce86780f8b7949bd2..36fa12ec13805cd6eaf32b8698c76fabedfcac56 100644
--- a/source/blender/makesrna/intern/rna_packedfile.c
+++ b/source/blender/makesrna/intern/rna_packedfile.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_palette.c b/source/blender/makesrna/intern/rna_palette.c
index 30604c7a3b855898e3701737aaef407025a93419..b0c9e139576983474b5f3d4eaee7f7b5b4f5c709 100644
--- a/source/blender/makesrna/intern/rna_palette.c
+++ b/source/blender/makesrna/intern/rna_palette.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_particle.c b/source/blender/makesrna/intern/rna_particle.c
index df6c12ffb27c80a91085d533d765e865c74fe9c7..f61d5456974e4a5905fb2941e79cafa8f1c1845c 100644
--- a/source/blender/makesrna/intern/rna_particle.c
+++ b/source/blender/makesrna/intern/rna_particle.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2011 AutoCRC (adaptive time step)
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 AutoCRC (adaptive time step). */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_pointcloud.c b/source/blender/makesrna/intern/rna_pointcloud.c
index 2b9465bb549866377b4042b2a496bcbc5477a85d..075d660ba2bb44c411744a05893160fd600905b5 100644
--- a/source/blender/makesrna/intern/rna_pointcloud.c
+++ b/source/blender/makesrna/intern/rna_pointcloud.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_pose.c b/source/blender/makesrna/intern/rna_pose.c
index 7714e4d1e5977b950af57295a0528df50d2ff61d..8b59962d85853ff8dcb5fcf0e3627b6c2e72da10 100644
--- a/source/blender/makesrna/intern/rna_pose.c
+++ b/source/blender/makesrna/intern/rna_pose.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_pose_api.c b/source/blender/makesrna/intern/rna_pose_api.c
index 1e1667f0ae8b5c5ee65efb5741ef4c2fd145c2f9..c9b7ab6240deda13f6bec75b5c0bad961bbbb274 100644
--- a/source/blender/makesrna/intern/rna_pose_api.c
+++ b/source/blender/makesrna/intern/rna_pose_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_render.c b/source/blender/makesrna/intern/rna_render.c
index 65e9a140f82ad61e736dc8fd27bd0db53877c032..997c110134dca85dda606b2c0eeb73a9656d4f3d 100644
--- a/source/blender/makesrna/intern/rna_render.c
+++ b/source/blender/makesrna/intern/rna_render.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_rigidbody.c b/source/blender/makesrna/intern/rna_rigidbody.c
index 10e28ac394865f2b6a22ee7ef62947cdbc50360a..c1012f67c5ad57ccf1a6d5b341dc0ad9cb5a6767 100644
--- a/source/blender/makesrna/intern/rna_rigidbody.c
+++ b/source/blender/makesrna/intern/rna_rigidbody.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_rna.c b/source/blender/makesrna/intern/rna_rna.c
index 85955c5e9f7c479d51736eb401648275818cadb9..e7c3d90573f29a8ac4b0050426ae1b27719159a1 100644
--- a/source/blender/makesrna/intern/rna_rna.c
+++ b/source/blender/makesrna/intern/rna_rna.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_scene.c b/source/blender/makesrna/intern/rna_scene.c
index 201ea5469cca6f06bdc2672fe73faebc2cb24c64..c8f65e5e153f3c733702826e5b94992cb274b28e 100644
--- a/source/blender/makesrna/intern/rna_scene.c
+++ b/source/blender/makesrna/intern/rna_scene.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_scene_api.c b/source/blender/makesrna/intern/rna_scene_api.c
index 41ba81192025df82cf8eec9da3057b37fac46b38..75b41e4c7b9445f747dee196c57badabbd8f90d2 100644
--- a/source/blender/makesrna/intern/rna_scene_api.c
+++ b/source/blender/makesrna/intern/rna_scene_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_screen.c b/source/blender/makesrna/intern/rna_screen.c
index a8f28f6091c62f9458893deb9f265cf170e3af79..a65bd613ecfce1432ac2712fc4492eb32d57c218 100644
--- a/source/blender/makesrna/intern/rna_screen.c
+++ b/source/blender/makesrna/intern/rna_screen.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_sculpt_paint.c b/source/blender/makesrna/intern/rna_sculpt_paint.c
index 2358d236c4ddc5e8c99d704bf6f33c9591aaef83..1e7c67ef95efafc795d54b55309063db8bb2dc13 100644
--- a/source/blender/makesrna/intern/rna_sculpt_paint.c
+++ b/source/blender/makesrna/intern/rna_sculpt_paint.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_sequencer.c b/source/blender/makesrna/intern/rna_sequencer.c
index 15b3a2fe998a4b95c4097b9d586c91e6cc32aa8b..0013131e6224c1c12599767b3f120aa7da9a9c0a 100644
--- a/source/blender/makesrna/intern/rna_sequencer.c
+++ b/source/blender/makesrna/intern/rna_sequencer.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_sequencer_api.c b/source/blender/makesrna/intern/rna_sequencer_api.c
index e2e2bc2d5e896bba280df52693a94cd8a22eb5d0..36bc50e73fb574bcdc3dd2c9545c96d1de24c2f7 100644
--- a/source/blender/makesrna/intern/rna_sequencer_api.c
+++ b/source/blender/makesrna/intern/rna_sequencer_api.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_shader_fx.c b/source/blender/makesrna/intern/rna_shader_fx.c
index 7c5212073ab3d1af8e4374741590646add635dd5..ae7772fcb621d805b4c05dc9bfaa6f631e49892f 100644
--- a/source/blender/makesrna/intern/rna_shader_fx.c
+++ b/source/blender/makesrna/intern/rna_shader_fx.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_simulation.c b/source/blender/makesrna/intern/rna_simulation.c
index 6f5041c9ed13b8a5559bc055a131f4385b0be292..6e35d7ef740450ba586d9fb8315faf069f7b9f4f 100644
--- a/source/blender/makesrna/intern/rna_simulation.c
+++ b/source/blender/makesrna/intern/rna_simulation.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_sound.c b/source/blender/makesrna/intern/rna_sound.c
index 9dc64fc950c0f8f5a5ac6721823b7e576bbf6d43..3d51f80adde819838171a477f53ce40a21544a2e 100644
--- a/source/blender/makesrna/intern/rna_sound.c
+++ b/source/blender/makesrna/intern/rna_sound.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_sound_api.c b/source/blender/makesrna/intern/rna_sound_api.c
index 82da0adf0fe1188501daa461a56db9bfef902f3c..5cc7ee29afee4018cbbb4fb067e6fe46ca58de06 100644
--- a/source/blender/makesrna/intern/rna_sound_api.c
+++ b/source/blender/makesrna/intern/rna_sound_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_space.c b/source/blender/makesrna/intern/rna_space.c
index 987660a80ab28b4c2d27151c0a68f2800f1968bc..20fa8b87cd2f9ea06541d832f5734d31f1909713 100644
--- a/source/blender/makesrna/intern/rna_space.c
+++ b/source/blender/makesrna/intern/rna_space.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_space_api.c b/source/blender/makesrna/intern/rna_space_api.c
index c5569683c9c24b1ec94fb64607b64e4fded1f8dd..06bb2207b0aa1996bda49b88f350ec47a1ee23e2 100644
--- a/source/blender/makesrna/intern/rna_space_api.c
+++ b/source/blender/makesrna/intern/rna_space_api.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_speaker.c b/source/blender/makesrna/intern/rna_speaker.c
index 2dce9d3200603202818e5e61b64d4651e4b3dcf1..ccffe8341f56a6294823ce9e4b6d660b2d21af68 100644
--- a/source/blender/makesrna/intern/rna_speaker.c
+++ b/source/blender/makesrna/intern/rna_speaker.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_test.c b/source/blender/makesrna/intern/rna_test.c
index 39c1623352d82dfb37bf72ee9f10ba7d017ca081..ed3be815235be2962c9c247f8faeda5c3cd62aaa 100644
--- a/source/blender/makesrna/intern/rna_test.c
+++ b/source/blender/makesrna/intern/rna_test.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_text.c b/source/blender/makesrna/intern/rna_text.c
index 52f762e5494e8ab837c00f2188149ff688fce165..3d2df5b7411ca1229f96e7689b4142ebabb2963d 100644
--- a/source/blender/makesrna/intern/rna_text.c
+++ b/source/blender/makesrna/intern/rna_text.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_text_api.c b/source/blender/makesrna/intern/rna_text_api.c
index b4c4a79ca75ed9cbba634dad0204f9c4234f1eac..67e93add549595a46fa58f88c48fdbad544cbedb 100644
--- a/source/blender/makesrna/intern/rna_text_api.c
+++ b/source/blender/makesrna/intern/rna_text_api.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_texture.c b/source/blender/makesrna/intern/rna_texture.c
index f66fb2653b5511b289ac01c4810c4a168180eac9..3c8f1ee28c9dc519b680c73ddc4e7f03dc075350 100644
--- a/source/blender/makesrna/intern/rna_texture.c
+++ b/source/blender/makesrna/intern/rna_texture.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_texture_api.c b/source/blender/makesrna/intern/rna_texture_api.c
index 2a4cdaebcee00e423bf9310f62947ba656fb77ec..3786bcbf9f73ab6264d0177e4b6efbdefa3bd1a8 100644
--- a/source/blender/makesrna/intern/rna_texture_api.c
+++ b/source/blender/makesrna/intern/rna_texture_api.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_timeline.c b/source/blender/makesrna/intern/rna_timeline.c
index 223e6389942754a55dece6534cafc912e69f3037..46d6e8b8b7d09c4e57705889c63c238efd59e1d1 100644
--- a/source/blender/makesrna/intern/rna_timeline.c
+++ b/source/blender/makesrna/intern/rna_timeline.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_tracking.c b/source/blender/makesrna/intern/rna_tracking.c
index 2d4d5ee766f5aa1cd5679ba2ff1aab56f6c1e798..e604469e3fdafd32585db16d44fbc25f2102778a 100644
--- a/source/blender/makesrna/intern/rna_tracking.c
+++ b/source/blender/makesrna/intern/rna_tracking.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_ui.c b/source/blender/makesrna/intern/rna_ui.c
index 05ed5e096d847bfbd2847e7513e5b77187d5e8d0..00fb48b489a8d2a80a1851ccf22033dc9ab60c76 100644
--- a/source/blender/makesrna/intern/rna_ui.c
+++ b/source/blender/makesrna/intern/rna_ui.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_ui_api.c b/source/blender/makesrna/intern/rna_ui_api.c
index 5bf778d19623992180f79c83d8192f160afd8aaa..c4396719bb9df944188cef8aaea8f36ddb0bf055 100644
--- a/source/blender/makesrna/intern/rna_ui_api.c
+++ b/source/blender/makesrna/intern/rna_ui_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_userdef.c b/source/blender/makesrna/intern/rna_userdef.c
index 53af3f5bed5835c5d907e2f75cd9476d04dc4ae3..e32bedf3ed069c07d50bfbd53f9ee8970983b8d6 100644
--- a/source/blender/makesrna/intern/rna_userdef.c
+++ b/source/blender/makesrna/intern/rna_userdef.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_vfont.c b/source/blender/makesrna/intern/rna_vfont.c
index f5f7742d753f3b683c6315ef35f64733c2fadd7c..9ddbbe84e9b9005631144c7a776270caa63e5a54 100644
--- a/source/blender/makesrna/intern/rna_vfont.c
+++ b/source/blender/makesrna/intern/rna_vfont.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_vfont_api.c b/source/blender/makesrna/intern/rna_vfont_api.c
index 80e0511caf97f0aef099de157a3e22aa175bd766..222bf4f505b1e6309d8abfc49f467a166d038224 100644
--- a/source/blender/makesrna/intern/rna_vfont_api.c
+++ b/source/blender/makesrna/intern/rna_vfont_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_volume.c b/source/blender/makesrna/intern/rna_volume.c
index 3100c1195f476df9fd1bf87715ba30ee54ae9ec4..ca3b09c61c51b47df43e82520ae9cb2f2315f99c 100644
--- a/source/blender/makesrna/intern/rna_volume.c
+++ b/source/blender/makesrna/intern/rna_volume.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_wm.c b/source/blender/makesrna/intern/rna_wm.c
index 178a50c4d293a0286e7c8bdc14030b2e24cae263..b0021bd0f3d0596a68846c68011e58b5c10e1168 100644
--- a/source/blender/makesrna/intern/rna_wm.c
+++ b/source/blender/makesrna/intern/rna_wm.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_wm_api.c b/source/blender/makesrna/intern/rna_wm_api.c
index 9e41d8c03fcd74f383492b4204733e2c4079e43f..81cc72088a6519c9117fb8ec8b8f3b1e8f7d0521 100644
--- a/source/blender/makesrna/intern/rna_wm_api.c
+++ b/source/blender/makesrna/intern/rna_wm_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_wm_gizmo.c b/source/blender/makesrna/intern/rna_wm_gizmo.c
index 6a63723d1740ae7741870d2a87c2d099e6a98205..6c3d96726bb9410bdb65478cf11e8b7a0cacbc28 100644
--- a/source/blender/makesrna/intern/rna_wm_gizmo.c
+++ b/source/blender/makesrna/intern/rna_wm_gizmo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_wm_gizmo_api.c b/source/blender/makesrna/intern/rna_wm_gizmo_api.c
index d6f2ffca65f5998efcf1298871fb17c4999220bc..419dfa68305ccae7301caf61cec0388ae6c5341e 100644
--- a/source/blender/makesrna/intern/rna_wm_gizmo_api.c
+++ b/source/blender/makesrna/intern/rna_wm_gizmo_api.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_workspace.c b/source/blender/makesrna/intern/rna_workspace.c
index d76ad25414065fbec7649c70467bbffb04afc80d..f32a74be6e2253349bb36c82434f5ffe55f2f0b0 100644
--- a/source/blender/makesrna/intern/rna_workspace.c
+++ b/source/blender/makesrna/intern/rna_workspace.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_workspace_api.c b/source/blender/makesrna/intern/rna_workspace_api.c
index 15230f1198bf383626245ac1c47112a2358c0e47..93c2828de883c4d5812e382702221b6a746cc436 100644
--- a/source/blender/makesrna/intern/rna_workspace_api.c
+++ b/source/blender/makesrna/intern/rna_workspace_api.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_world.c b/source/blender/makesrna/intern/rna_world.c
index 68f11d71de2f78b1d98309268313730e6e6b7290..040086653420e45236dcff7913395ee8d47257ef 100644
--- a/source/blender/makesrna/intern/rna_world.c
+++ b/source/blender/makesrna/intern/rna_world.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/makesrna/intern/rna_xr.c b/source/blender/makesrna/intern/rna_xr.c
index dd4cbeac1748cb905a6b1b856debd61f2ac25676..87d8bc8d84419614a5f695d30bd87ee5c6ffc72b 100644
--- a/source/blender/makesrna/intern/rna_xr.c
+++ b/source/blender/makesrna/intern/rna_xr.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup RNA
diff --git a/source/blender/modifiers/CMakeLists.txt b/source/blender/modifiers/CMakeLists.txt
index 719a07adbabbbfd905b160961222c37485871ecd..dcff80a4bc4f6ec17e0909770a5182eabdd451e0 100644
--- a/source/blender/modifiers/CMakeLists.txt
+++ b/source/blender/modifiers/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/modifiers/MOD_modifiertypes.h b/source/blender/modifiers/MOD_modifiertypes.h
index 2a0a7a0247272fd32a7ba160221b7b7da54e3b93..4576ac684136da9246129aac4d53ea795618e059 100644
--- a/source/blender/modifiers/MOD_modifiertypes.h
+++ b/source/blender/modifiers/MOD_modifiertypes.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/MOD_nodes.h b/source/blender/modifiers/MOD_nodes.h
index 1105925162ca0a861543dcd15684051ce5bbc0d8..053fb6e32443684577f2a712f857e0d541ce9ec4 100644
--- a/source/blender/modifiers/MOD_nodes.h
+++ b/source/blender/modifiers/MOD_nodes.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/modifiers/intern/MOD_armature.c b/source/blender/modifiers/intern/MOD_armature.c
index a86a667974e92865f0995bdf1fbe326ba55d5775..57f36f56afc83554d5aac2baa63dbd7433a6607b 100644
--- a/source/blender/modifiers/intern/MOD_armature.c
+++ b/source/blender/modifiers/intern/MOD_armature.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_array.c b/source/blender/modifiers/intern/MOD_array.c
index c2b1478c1b2f49efd5007d2b1efd132590b535f0..2cc3bb8c9164d1ec217ce8c6e0ee5b6f83a49108 100644
--- a/source/blender/modifiers/intern/MOD_array.c
+++ b/source/blender/modifiers/intern/MOD_array.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_bevel.c b/source/blender/modifiers/intern/MOD_bevel.c
index 984e85f58efceced949073fdb915fff8d09df482..6e91d3f6c587bf4f8bc7cbc51f74db3c98142eb6 100644
--- a/source/blender/modifiers/intern/MOD_bevel.c
+++ b/source/blender/modifiers/intern/MOD_bevel.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_boolean.cc b/source/blender/modifiers/intern/MOD_boolean.cc
index 7b084d608fb118d4fb5467b7609804f74244cbc6..9432fc6b110af9e1e4923773cbd1f8ed640b189d 100644
--- a/source/blender/modifiers/intern/MOD_boolean.cc
+++ b/source/blender/modifiers/intern/MOD_boolean.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_build.c b/source/blender/modifiers/intern/MOD_build.c
index 867c1e9b5bb1c6486505784820dd12fbb96f751a..6938c1fd001eb17820cd6116f5bc3cb110ab6a03 100644
--- a/source/blender/modifiers/intern/MOD_build.c
+++ b/source/blender/modifiers/intern/MOD_build.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_cast.c b/source/blender/modifiers/intern/MOD_cast.c
index defc7df31dc3bf90f8600f1e679d9ecb743de51d..3824e5282fee8dc285cce0a415b6ce68042b97e4 100644
--- a/source/blender/modifiers/intern/MOD_cast.c
+++ b/source/blender/modifiers/intern/MOD_cast.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_cloth.c b/source/blender/modifiers/intern/MOD_cloth.c
index 4b8928009febdbe396c0220fd5bce1b2e3bfeacc..bb27a74f8974f64a091f9f2dd7442315aeb7f8d8 100644
--- a/source/blender/modifiers/intern/MOD_cloth.c
+++ b/source/blender/modifiers/intern/MOD_cloth.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_collision.c b/source/blender/modifiers/intern/MOD_collision.c
index 658a569627b2f2f5dc900bcf825aff89f405cab8..cc3813a76477f26252b203cdfbedd39cdc771e10 100644
--- a/source/blender/modifiers/intern/MOD_collision.c
+++ b/source/blender/modifiers/intern/MOD_collision.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_correctivesmooth.c b/source/blender/modifiers/intern/MOD_correctivesmooth.c
index d75c2a13587bdb922a99548f17671145804b191a..65d8ada5294acb2046c5d83d753ce323b77ab57b 100644
--- a/source/blender/modifiers/intern/MOD_correctivesmooth.c
+++ b/source/blender/modifiers/intern/MOD_correctivesmooth.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_curve.c b/source/blender/modifiers/intern/MOD_curve.c
index b01b70000b85497c4c6eaae0c4160256e3ea45ae..ca5d59433f0798b56d4cd4c54c41eb74a1bc8104 100644
--- a/source/blender/modifiers/intern/MOD_curve.c
+++ b/source/blender/modifiers/intern/MOD_curve.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_datatransfer.c b/source/blender/modifiers/intern/MOD_datatransfer.c
index a289b9c918ac7a475a4fffc868e273295a09df82..50ddfb8a688605d56eb81a70b46a3061af7f4e58 100644
--- a/source/blender/modifiers/intern/MOD_datatransfer.c
+++ b/source/blender/modifiers/intern/MOD_datatransfer.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_decimate.c b/source/blender/modifiers/intern/MOD_decimate.c
index ad5391d2b6c25ca48219f2d0961f1fd4319f5a31..7f48c29223d831b831dff3575aefe5451c705aa5 100644
--- a/source/blender/modifiers/intern/MOD_decimate.c
+++ b/source/blender/modifiers/intern/MOD_decimate.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_displace.c b/source/blender/modifiers/intern/MOD_displace.c
index 94cdcad3b6a2344c81104cc591a27b6688bd853e..0411bcd7c3476532f6a00b1377f4899d6718db4b 100644
--- a/source/blender/modifiers/intern/MOD_displace.c
+++ b/source/blender/modifiers/intern/MOD_displace.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_dynamicpaint.c b/source/blender/modifiers/intern/MOD_dynamicpaint.c
index 676433b14b1ec64a7209b187694a0ec9d1690a29..e3f83205a68d84f02b1f42427843654fadea5754 100644
--- a/source/blender/modifiers/intern/MOD_dynamicpaint.c
+++ b/source/blender/modifiers/intern/MOD_dynamicpaint.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_edgesplit.c b/source/blender/modifiers/intern/MOD_edgesplit.c
index 55707435e523cd7bbeaead0ca4f8e8892ffffbb3..9450a444042f11e6fad5d391005f05776b6d9f90 100644
--- a/source/blender/modifiers/intern/MOD_edgesplit.c
+++ b/source/blender/modifiers/intern/MOD_edgesplit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_explode.c b/source/blender/modifiers/intern/MOD_explode.c
index c788633f978081e773c05d4fb33e2a9fed874040..e592824a522fa9e1a43abc81d907f7d133267870 100644
--- a/source/blender/modifiers/intern/MOD_explode.c
+++ b/source/blender/modifiers/intern/MOD_explode.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_fluid.c b/source/blender/modifiers/intern/MOD_fluid.c
index 748633b78b3776d51042486b0811edebda2fc1c0..847cf47993e298b5341d640d7bbb255c4c360cc5 100644
--- a/source/blender/modifiers/intern/MOD_fluid.c
+++ b/source/blender/modifiers/intern/MOD_fluid.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_hook.c b/source/blender/modifiers/intern/MOD_hook.c
index b4c081906ba563c1171ee1c7f2932281873fd6d6..04a956707a090a6c1d57268fe2e2e2bfdf512a90 100644
--- a/source/blender/modifiers/intern/MOD_hook.c
+++ b/source/blender/modifiers/intern/MOD_hook.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_laplaciandeform.c b/source/blender/modifiers/intern/MOD_laplaciandeform.c
index 090973f12c00ff80ce2f5a86f653d6404837cad5..d1448b198af731b6ba26640cbb3b0f478187edeb 100644
--- a/source/blender/modifiers/intern/MOD_laplaciandeform.c
+++ b/source/blender/modifiers/intern/MOD_laplaciandeform.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_laplaciansmooth.c b/source/blender/modifiers/intern/MOD_laplaciansmooth.c
index 8cc34d43d8230c45cbab2815b2ae57722ec655d0..eed5430cc105000b161ddb26a8cb95034372f9ea 100644
--- a/source/blender/modifiers/intern/MOD_laplaciansmooth.c
+++ b/source/blender/modifiers/intern/MOD_laplaciansmooth.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_lattice.c b/source/blender/modifiers/intern/MOD_lattice.c
index 709b617d3ecfd4e04191218222eaaa0e03e935d7..fded78293cdd36836b5a0e4961573cfc1a6f9772 100644
--- a/source/blender/modifiers/intern/MOD_lattice.c
+++ b/source/blender/modifiers/intern/MOD_lattice.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_mask.cc b/source/blender/modifiers/intern/MOD_mask.cc
index 097f72412056a79a27bd844e696cc0db5cb030b5..e00b04c0e7920a66fc4e231bd7eebdf439c477a5 100644
--- a/source/blender/modifiers/intern/MOD_mask.cc
+++ b/source/blender/modifiers/intern/MOD_mask.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_mesh_to_volume.cc b/source/blender/modifiers/intern/MOD_mesh_to_volume.cc
index a8e1c91dd201bb660228e97d607d3b29037203d5..e2d4ad79d1de17029a89b177ec292eefd82c9beb 100644
--- a/source/blender/modifiers/intern/MOD_mesh_to_volume.cc
+++ b/source/blender/modifiers/intern/MOD_mesh_to_volume.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_meshcache.c b/source/blender/modifiers/intern/MOD_meshcache.c
index 48ff4f7d6af34487b5fbb775d8b0601d86b80426..4ea8904c2bedc23927fc6feff307f0d2e4f21736 100644
--- a/source/blender/modifiers/intern/MOD_meshcache.c
+++ b/source/blender/modifiers/intern/MOD_meshcache.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_meshcache_mdd.c b/source/blender/modifiers/intern/MOD_meshcache_mdd.c
index 22e49434f7d6acb9e0fd23e8cc154a349b35998c..66b5f3ff9b292427f14b83e49ec19b80bea693e1 100644
--- a/source/blender/modifiers/intern/MOD_meshcache_mdd.c
+++ b/source/blender/modifiers/intern/MOD_meshcache_mdd.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_meshcache_pc2.c b/source/blender/modifiers/intern/MOD_meshcache_pc2.c
index 485ea6d6e3294abbe5ce20682b648a98bbe06f0f..54ea27d00858f99308370339ab0701b789b3e4d2 100644
--- a/source/blender/modifiers/intern/MOD_meshcache_pc2.c
+++ b/source/blender/modifiers/intern/MOD_meshcache_pc2.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_meshcache_util.c b/source/blender/modifiers/intern/MOD_meshcache_util.c
index 0027ce5f7e29ff1eb95c6ab9b7e6d4ec66036bd7..d3cb21bfb6e6d4c5568dcafaea49e4eee7b8a002 100644
--- a/source/blender/modifiers/intern/MOD_meshcache_util.c
+++ b/source/blender/modifiers/intern/MOD_meshcache_util.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_meshcache_util.h b/source/blender/modifiers/intern/MOD_meshcache_util.h
index b1a8a3ffc19a3cfcaadb3f3df3b012f8e7e54750..f7efdd86add72d1b82be1cf1784272126effd70f 100644
--- a/source/blender/modifiers/intern/MOD_meshcache_util.h
+++ b/source/blender/modifiers/intern/MOD_meshcache_util.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_meshdeform.c b/source/blender/modifiers/intern/MOD_meshdeform.c
index 5c6bcb4ba242442c93fbdabf2eda5a315562bb90..c516470b6351057eb0d10c6ca13821cd21c33d4d 100644
--- a/source/blender/modifiers/intern/MOD_meshdeform.c
+++ b/source/blender/modifiers/intern/MOD_meshdeform.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_meshsequencecache.c b/source/blender/modifiers/intern/MOD_meshsequencecache.c
index 8bde0cab3dc7ee2a7e3d5543635b77179604fb92..9f38f941e72aeb9c63a0b0ffbbb47da7d4738972 100644
--- a/source/blender/modifiers/intern/MOD_meshsequencecache.c
+++ b/source/blender/modifiers/intern/MOD_meshsequencecache.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_mirror.c b/source/blender/modifiers/intern/MOD_mirror.c
index 721906a6a01dcee739801abdddeeb39875f9abd1..4538190896b541b195249242b1e7481958a4bf7c 100644
--- a/source/blender/modifiers/intern/MOD_mirror.c
+++ b/source/blender/modifiers/intern/MOD_mirror.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_multires.c b/source/blender/modifiers/intern/MOD_multires.c
index 205839774d85d8c53de0c090a3ccf5e351bffad0..37d75874c6930cf01c32359b5a9a8ded295019de 100644
--- a/source/blender/modifiers/intern/MOD_multires.c
+++ b/source/blender/modifiers/intern/MOD_multires.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_nodes.cc b/source/blender/modifiers/intern/MOD_nodes.cc
index f16fc8ff7648a3fd6fecec7345130bef5e3c6d7c..f54ed8f5a2503cdcc5b367eba9127b8e51869f56 100644
--- a/source/blender/modifiers/intern/MOD_nodes.cc
+++ b/source/blender/modifiers/intern/MOD_nodes.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_nodes_evaluator.cc b/source/blender/modifiers/intern/MOD_nodes_evaluator.cc
index f59af9074ce9c49e25d5fa4dfa6c05f9e80f8cd2..c4aa023faa6b9b8ae26ce37387cdf54dbbd26e16 100644
--- a/source/blender/modifiers/intern/MOD_nodes_evaluator.cc
+++ b/source/blender/modifiers/intern/MOD_nodes_evaluator.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "MOD_nodes_evaluator.hh"
 
diff --git a/source/blender/modifiers/intern/MOD_nodes_evaluator.hh b/source/blender/modifiers/intern/MOD_nodes_evaluator.hh
index 5151be07aa29286b6798d7e393fc503352e59de1..e981157da41d5cefbe9f697b468b031256d06cbf 100644
--- a/source/blender/modifiers/intern/MOD_nodes_evaluator.hh
+++ b/source/blender/modifiers/intern/MOD_nodes_evaluator.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/modifiers/intern/MOD_none.c b/source/blender/modifiers/intern/MOD_none.c
index cce3434f6e3d6c483cde45e10b93d058621d1162..12162b85ca152617d9a7234637cb8784149583f0 100644
--- a/source/blender/modifiers/intern/MOD_none.c
+++ b/source/blender/modifiers/intern/MOD_none.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_normal_edit.c b/source/blender/modifiers/intern/MOD_normal_edit.c
index 8b58b575d24405fd973cb0a0534b415473a6bf43..e6aebbfeb56157ec45398f9c7fae8a6221a29740 100644
--- a/source/blender/modifiers/intern/MOD_normal_edit.c
+++ b/source/blender/modifiers/intern/MOD_normal_edit.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_ocean.c b/source/blender/modifiers/intern/MOD_ocean.c
index 0c00f807df37d403fb0bd5a1ddc106df9c8fbaec..1d8a6abfe7ceff60af8b9392629742b3f1de61c9 100644
--- a/source/blender/modifiers/intern/MOD_ocean.c
+++ b/source/blender/modifiers/intern/MOD_ocean.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_particleinstance.c b/source/blender/modifiers/intern/MOD_particleinstance.c
index 67a492d41548a58f3ef91148daadf316d234b6da..0955f37ab4498542b7c8cc08e87d1fb2fdb5161b 100644
--- a/source/blender/modifiers/intern/MOD_particleinstance.c
+++ b/source/blender/modifiers/intern/MOD_particleinstance.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_particlesystem.c b/source/blender/modifiers/intern/MOD_particlesystem.c
index 6fb60fffcf4dd8838b4218af13c4639da77b848f..065931a2fba2103f04c21062be4b4dec32ff7d7c 100644
--- a/source/blender/modifiers/intern/MOD_particlesystem.c
+++ b/source/blender/modifiers/intern/MOD_particlesystem.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_remesh.c b/source/blender/modifiers/intern/MOD_remesh.c
index 67f83b17f3f0ef4aa6543ea2ca1957a9b8db16df..e88b63f9f67bfb0bb52cde102254b0ee6136178c 100644
--- a/source/blender/modifiers/intern/MOD_remesh.c
+++ b/source/blender/modifiers/intern/MOD_remesh.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 by Nicholas Bishop.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 by Nicholas Bishop. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_screw.c b/source/blender/modifiers/intern/MOD_screw.c
index 33c62197dbd9279d9cab451deeb478a23bddd3a5..95139135d5b431d78e21c0576814c144024f2c5a 100644
--- a/source/blender/modifiers/intern/MOD_screw.c
+++ b/source/blender/modifiers/intern/MOD_screw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_shapekey.c b/source/blender/modifiers/intern/MOD_shapekey.c
index 8c5299a965d96a65a05c4d8384970de9e85a77ec..0f7225bebed4af1a1902f4610e7072b89283c3c6 100644
--- a/source/blender/modifiers/intern/MOD_shapekey.c
+++ b/source/blender/modifiers/intern/MOD_shapekey.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_shrinkwrap.c b/source/blender/modifiers/intern/MOD_shrinkwrap.c
index 4d10df9133102ff00a1c298063cb1ea1e9a47e24..872015cae65db84cac02ca13b321d2e97ed901e5 100644
--- a/source/blender/modifiers/intern/MOD_shrinkwrap.c
+++ b/source/blender/modifiers/intern/MOD_shrinkwrap.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_simpledeform.c b/source/blender/modifiers/intern/MOD_simpledeform.c
index 25c3acb0c4f5fbd17b01f58d91af0c58d27a2b18..529549874178f84a1ea83ae5393874d948fec1bb 100644
--- a/source/blender/modifiers/intern/MOD_simpledeform.c
+++ b/source/blender/modifiers/intern/MOD_simpledeform.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_skin.c b/source/blender/modifiers/intern/MOD_skin.c
index d1cb120132d1151440dd99aead633c9c24e7a1c1..d5adab7c927ab22c2e8eed8493de302409411f36 100644
--- a/source/blender/modifiers/intern/MOD_skin.c
+++ b/source/blender/modifiers/intern/MOD_skin.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_smooth.c b/source/blender/modifiers/intern/MOD_smooth.c
index 3228a72d95802892c1bebdd46fb9b5639dad6e36..74672cd129f1fcbd82c36d0539559b95ede634a8 100644
--- a/source/blender/modifiers/intern/MOD_smooth.c
+++ b/source/blender/modifiers/intern/MOD_smooth.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_softbody.c b/source/blender/modifiers/intern/MOD_softbody.c
index f0178a817dc6261a9ab1ec179eacb3d96bf255fc..5a8c10e47daf0f562a64eb1c7d2fd2e217de7780 100644
--- a/source/blender/modifiers/intern/MOD_softbody.c
+++ b/source/blender/modifiers/intern/MOD_softbody.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_solidify.c b/source/blender/modifiers/intern/MOD_solidify.c
index 09933fef7ff32be92c3fc9064c369fa8e784109b..32379285b12295af0efcfd87489a8f2a3a901fd5 100644
--- a/source/blender/modifiers/intern/MOD_solidify.c
+++ b/source/blender/modifiers/intern/MOD_solidify.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_solidify_extrude.c b/source/blender/modifiers/intern/MOD_solidify_extrude.c
index fa8d08bf8393c33f1ea5dd49612143b4aa073c34..0313c37283a5dbb3a3495fdabcf5502f9793d439 100644
--- a/source/blender/modifiers/intern/MOD_solidify_extrude.c
+++ b/source/blender/modifiers/intern/MOD_solidify_extrude.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_solidify_nonmanifold.c b/source/blender/modifiers/intern/MOD_solidify_nonmanifold.c
index 5f6decdbe80cb085d6beb1f9ab9d54bf5f1d0a73..ed7acef4cdcb27f5bb6d028bc04a9a422b55a1d6 100644
--- a/source/blender/modifiers/intern/MOD_solidify_nonmanifold.c
+++ b/source/blender/modifiers/intern/MOD_solidify_nonmanifold.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_solidify_util.h b/source/blender/modifiers/intern/MOD_solidify_util.h
index e9f0709f7ea2004be7ff382a114c0620332a4458..7d40853c6f44c93842f48aba5c79ef9962a45742 100644
--- a/source/blender/modifiers/intern/MOD_solidify_util.h
+++ b/source/blender/modifiers/intern/MOD_solidify_util.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_subsurf.c b/source/blender/modifiers/intern/MOD_subsurf.c
index 65ad298cff17392340aafc86f61305eed11b717b..cad36959f2bf3882afb99d04a789f26582ceab7e 100644
--- a/source/blender/modifiers/intern/MOD_subsurf.c
+++ b/source/blender/modifiers/intern/MOD_subsurf.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_surface.c b/source/blender/modifiers/intern/MOD_surface.c
index a54af766b2f62208c13a66e1742da0aa60febe49..d9c57b6c81fbe870b7b72cce4c3a03c8374a5eac 100644
--- a/source/blender/modifiers/intern/MOD_surface.c
+++ b/source/blender/modifiers/intern/MOD_surface.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_surfacedeform.c b/source/blender/modifiers/intern/MOD_surfacedeform.c
index 70a05002a4f45e5b95ca15b40ae36c6115cc777a..c1b2db3daab1bdb1ccd18fe528d4fdd36f5dbc99 100644
--- a/source/blender/modifiers/intern/MOD_surfacedeform.c
+++ b/source/blender/modifiers/intern/MOD_surfacedeform.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2017, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_triangulate.c b/source/blender/modifiers/intern/MOD_triangulate.c
index d4fcebb3216bd5c9feaf4a154a4e36cd3623c0a9..52d5d2b467f597e1da4ec57d16ccba4e9f557c64 100644
--- a/source/blender/modifiers/intern/MOD_triangulate.c
+++ b/source/blender/modifiers/intern/MOD_triangulate.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_ui_common.c b/source/blender/modifiers/intern/MOD_ui_common.c
index fc1f6d33b25ad3fe80cd720ef5ace7be098a6819..94482742831fc78fabf7b10a528959abebcc8837 100644
--- a/source/blender/modifiers/intern/MOD_ui_common.c
+++ b/source/blender/modifiers/intern/MOD_ui_common.c
@@ -1,17 +1,4 @@
-/* This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_ui_common.h b/source/blender/modifiers/intern/MOD_ui_common.h
index 9662b1810131c80e076b7c657ed6cc541a6b7653..16e9dd25253ce734429cf18f9dff47f198466799 100644
--- a/source/blender/modifiers/intern/MOD_ui_common.h
+++ b/source/blender/modifiers/intern/MOD_ui_common.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_util.c b/source/blender/modifiers/intern/MOD_util.c
index d04aee91c71f03e6d4302ad3005228360b1c9fb5..41b600e386bd5e1cac972be3d7e60a675291bc1d 100644
--- a/source/blender/modifiers/intern/MOD_util.c
+++ b/source/blender/modifiers/intern/MOD_util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_util.h b/source/blender/modifiers/intern/MOD_util.h
index de02b55440a224144e229e7e424a6f741054d8bb..4578d2c48626d064ce2f0fb34100e67328b4f125 100644
--- a/source/blender/modifiers/intern/MOD_util.h
+++ b/source/blender/modifiers/intern/MOD_util.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_uvproject.c b/source/blender/modifiers/intern/MOD_uvproject.c
index 5721834c032891168c6e192702dcbeac39b52fe3..51ec0a46d328b97cd8a459a85c76cd123343fa7e 100644
--- a/source/blender/modifiers/intern/MOD_uvproject.c
+++ b/source/blender/modifiers/intern/MOD_uvproject.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_uvwarp.c b/source/blender/modifiers/intern/MOD_uvwarp.c
index 552cf1d5d3b3e0e396630215646e1d6c3f6ba3e8..5749ea3c2365e8c07ba7e86df960312516da21dd 100644
--- a/source/blender/modifiers/intern/MOD_uvwarp.c
+++ b/source/blender/modifiers/intern/MOD_uvwarp.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_volume_displace.cc b/source/blender/modifiers/intern/MOD_volume_displace.cc
index 2b9ee97ea0936e001dbaf5351571578c1a5820df..3e71d1fb106cb7469315b035025b5f34fbda7672 100644
--- a/source/blender/modifiers/intern/MOD_volume_displace.cc
+++ b/source/blender/modifiers/intern/MOD_volume_displace.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_volume_to_mesh.cc b/source/blender/modifiers/intern/MOD_volume_to_mesh.cc
index 9557abf0a8af64e05f07bef76f42fe24f99ab922..06c3ea055bc059a5acc596bdf0f1930b4d420ea5 100644
--- a/source/blender/modifiers/intern/MOD_volume_to_mesh.cc
+++ b/source/blender/modifiers/intern/MOD_volume_to_mesh.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_warp.c b/source/blender/modifiers/intern/MOD_warp.c
index 777ae4d9b107978a578c8fa2bfc6b479018da216..70edf39ce0d6529ef22350e16121dd4b53452910 100644
--- a/source/blender/modifiers/intern/MOD_warp.c
+++ b/source/blender/modifiers/intern/MOD_warp.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_wave.c b/source/blender/modifiers/intern/MOD_wave.c
index 5a56ec1d9e5a1c6b09f443964cfc557e70dc07a7..f1d023ba79f57e0de5d95a425587a71aa08d8e54 100644
--- a/source/blender/modifiers/intern/MOD_wave.c
+++ b/source/blender/modifiers/intern/MOD_wave.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_weighted_normal.c b/source/blender/modifiers/intern/MOD_weighted_normal.c
index 21e6ed4690802b6f75f716ae80772fdef107a9e6..78856709bdf79683fbdebe46cae15ce1af35991e 100644
--- a/source/blender/modifiers/intern/MOD_weighted_normal.c
+++ b/source/blender/modifiers/intern/MOD_weighted_normal.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_weightvg_util.c b/source/blender/modifiers/intern/MOD_weightvg_util.c
index eedaea9d40363f7dc06330267d300c960538b4ef..a5c901dbe7ad835b1b27e81aa62bce802a6373d6 100644
--- a/source/blender/modifiers/intern/MOD_weightvg_util.c
+++ b/source/blender/modifiers/intern/MOD_weightvg_util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 by Bastien Montagne.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 by Bastien Montagne. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_weightvg_util.h b/source/blender/modifiers/intern/MOD_weightvg_util.h
index 3bcbe3ed68b86c5593df2a7ffc23765efbd31dcb..2d86518aaa0a0b23fc08002e107189cb7e4392d3 100644
--- a/source/blender/modifiers/intern/MOD_weightvg_util.h
+++ b/source/blender/modifiers/intern/MOD_weightvg_util.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 by Bastien Montagne.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 by Bastien Montagne. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_weightvgedit.c b/source/blender/modifiers/intern/MOD_weightvgedit.c
index 6e4f8be8c504e5b00c30dc58776d3ceacd883576..ab8b00bbb4713d6f3f8bf172c89d5be999cfee68 100644
--- a/source/blender/modifiers/intern/MOD_weightvgedit.c
+++ b/source/blender/modifiers/intern/MOD_weightvgedit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 by Bastien Montagne.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 by Bastien Montagne. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_weightvgmix.c b/source/blender/modifiers/intern/MOD_weightvgmix.c
index 1b2608afa126a794805e0cd87f58e9f88a258ad9..1078ebfaeb2887a3cf0f4021f2c5bb8154c1254e 100644
--- a/source/blender/modifiers/intern/MOD_weightvgmix.c
+++ b/source/blender/modifiers/intern/MOD_weightvgmix.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 by Bastien Montagne.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 by Bastien Montagne. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_weightvgproximity.c b/source/blender/modifiers/intern/MOD_weightvgproximity.c
index 27242b32432f1e2bfccc1cfea8b42a6bd4dbe638..b184c1b2e1f346c66e4c126c7b62510bdcd599f4 100644
--- a/source/blender/modifiers/intern/MOD_weightvgproximity.c
+++ b/source/blender/modifiers/intern/MOD_weightvgproximity.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 by Bastien Montagne.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 by Bastien Montagne. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_weld.cc b/source/blender/modifiers/intern/MOD_weld.cc
index e9d98429ff2f1a4d5642b5c0d2f8454e8f983f1a..7c55376a2545ac03f3d9e6645c7a9362d7fae23b 100644
--- a/source/blender/modifiers/intern/MOD_weld.cc
+++ b/source/blender/modifiers/intern/MOD_weld.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 by the Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/modifiers/intern/MOD_wireframe.c b/source/blender/modifiers/intern/MOD_wireframe.c
index 72bc4336eff50e138b39adf03c1af421281822a9..e18e18010cb5f4251944be67fa992e3f2079351e 100644
--- a/source/blender/modifiers/intern/MOD_wireframe.c
+++ b/source/blender/modifiers/intern/MOD_wireframe.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/nodes/CMakeLists.txt b/source/blender/nodes/CMakeLists.txt
index 43fb90a52cdc7fe61b2afffc4b0a346c315c3726..2ac55b860c3e8f905527819ccfb0e6c91a2a0a6d 100644
--- a/source/blender/nodes/CMakeLists.txt
+++ b/source/blender/nodes/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 add_subdirectory(composite)
 add_subdirectory(function)
diff --git a/source/blender/nodes/NOD_common.h b/source/blender/nodes/NOD_common.h
index e488352170be75d7eeba62672107226f8ea728ad..5957b5549901d1b898c84370d84390aee52c15b3 100644
--- a/source/blender/nodes/NOD_common.h
+++ b/source/blender/nodes/NOD_common.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/NOD_composite.h b/source/blender/nodes/NOD_composite.h
index 71acc738472d0a41f51e65d0d767d691b2da38a4..d5d97f7be2eba7e6d3c44b6c70ac9b4af62f11ed 100644
--- a/source/blender/nodes/NOD_composite.h
+++ b/source/blender/nodes/NOD_composite.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/NOD_derived_node_tree.hh b/source/blender/nodes/NOD_derived_node_tree.hh
index dc619deb5d2326bd41d115d1fdf1221295eeac03..b0799d90dcd3572d9ebfe109e01ca71908afc518 100644
--- a/source/blender/nodes/NOD_derived_node_tree.hh
+++ b/source/blender/nodes/NOD_derived_node_tree.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/NOD_function.h b/source/blender/nodes/NOD_function.h
index be3998a916c6c313e57b2615df238518b6994934..a33cdc1b64c30bd4838b2217f224d0bd0a251e81 100644
--- a/source/blender/nodes/NOD_function.h
+++ b/source/blender/nodes/NOD_function.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/NOD_geometry.h b/source/blender/nodes/NOD_geometry.h
index 609d92c09dfe21fb75f469a5f01075dd15552912..86dde999ffc29e7d5c6e76f88eff9a29489f03ef 100644
--- a/source/blender/nodes/NOD_geometry.h
+++ b/source/blender/nodes/NOD_geometry.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/NOD_geometry_exec.hh b/source/blender/nodes/NOD_geometry_exec.hh
index 7060760237ae813ebff3561de9a35ef162a84c9d..540afc41dba1e4fc50e66db776c0c008d63424bb 100644
--- a/source/blender/nodes/NOD_geometry_exec.hh
+++ b/source/blender/nodes/NOD_geometry_exec.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/NOD_geometry_nodes_eval_log.hh b/source/blender/nodes/NOD_geometry_nodes_eval_log.hh
index ac2c29b4ec2a7333e7b418d491c4dd7430501838..7ef149d5dc5ec91ee4ca759db2e967c5cda7b9e7 100644
--- a/source/blender/nodes/NOD_geometry_nodes_eval_log.hh
+++ b/source/blender/nodes/NOD_geometry_nodes_eval_log.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/NOD_math_functions.hh b/source/blender/nodes/NOD_math_functions.hh
index 6ea89beee2e22fb2b582941c215b782ef8f653de..28e9595489a845f25eb1520abaf25d97e82ba4f3 100644
--- a/source/blender/nodes/NOD_math_functions.hh
+++ b/source/blender/nodes/NOD_math_functions.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/NOD_multi_function.hh b/source/blender/nodes/NOD_multi_function.hh
index 367ceaab9f759586de089865521d903ee5ce93e4..b6d51578b1cf5a87804f1451d7aeee9ce723116e 100644
--- a/source/blender/nodes/NOD_multi_function.hh
+++ b/source/blender/nodes/NOD_multi_function.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/NOD_node_declaration.hh b/source/blender/nodes/NOD_node_declaration.hh
index 113e8ffc93d5e22292374342c274d208b2411260..3bcd4b87b15abe2ec4e1b5beef361e90fda54e36 100644
--- a/source/blender/nodes/NOD_node_declaration.hh
+++ b/source/blender/nodes/NOD_node_declaration.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/NOD_node_tree_ref.hh b/source/blender/nodes/NOD_node_tree_ref.hh
index ebbec20a1397160d0410e149a3601e7395642213..3ed09de8fab5ab27fc37377502c8c4c17fca8e29 100644
--- a/source/blender/nodes/NOD_node_tree_ref.hh
+++ b/source/blender/nodes/NOD_node_tree_ref.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/NOD_shader.h b/source/blender/nodes/NOD_shader.h
index 57740ce3ad9e772dd0340c5194d57cc780ca2a9e..f1c08f6a5892eb6d51f6aa4c2df895798da929fa 100644
--- a/source/blender/nodes/NOD_shader.h
+++ b/source/blender/nodes/NOD_shader.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/NOD_socket.h b/source/blender/nodes/NOD_socket.h
index 4f8e114c34a393bca5bf0cc6497b9b500f61ad80..e4f675135bd7126e9140b207f3f9f76d2f25b907 100644
--- a/source/blender/nodes/NOD_socket.h
+++ b/source/blender/nodes/NOD_socket.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/NOD_socket_declarations.hh b/source/blender/nodes/NOD_socket_declarations.hh
index a1972c66ca2883b5db4fa1231a9cd1c4c3d4703e..503327ac4da9be2aaeea3d7a16fb937a5ccdb825 100644
--- a/source/blender/nodes/NOD_socket_declarations.hh
+++ b/source/blender/nodes/NOD_socket_declarations.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/NOD_socket_declarations_geometry.hh b/source/blender/nodes/NOD_socket_declarations_geometry.hh
index 0ce07da22ffedfa1b873101fc83241b0edd723a7..8d254d8d1aa87fd6428d0634f1b4008684eea208 100644
--- a/source/blender/nodes/NOD_socket_declarations_geometry.hh
+++ b/source/blender/nodes/NOD_socket_declarations_geometry.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/NOD_socket_search_link.hh b/source/blender/nodes/NOD_socket_search_link.hh
index b7594561dc4c67af7a419a2ef631ec38d1024150..e39274886127ac23d8ed665944f24d0fce141861 100644
--- a/source/blender/nodes/NOD_socket_search_link.hh
+++ b/source/blender/nodes/NOD_socket_search_link.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/NOD_static_types.h b/source/blender/nodes/NOD_static_types.h
index 8fd71a978e37ed59afb1449f83497061563688b6..1f1d7e4dc3a15ac5876b3da2db10a1acac39918f 100644
--- a/source/blender/nodes/NOD_static_types.h
+++ b/source/blender/nodes/NOD_static_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/NOD_texture.h b/source/blender/nodes/NOD_texture.h
index c08bc8149155a8de37538f70152ad0c4664812c5..0f07b17f165e68c83c7cff3df2ef266946fde587 100644
--- a/source/blender/nodes/NOD_texture.h
+++ b/source/blender/nodes/NOD_texture.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/composite/CMakeLists.txt b/source/blender/nodes/composite/CMakeLists.txt
index 8581ab7f82f6cfb6e9b5e1c88252b6ea165b9874..006682631ae973575ca047cf9edb0534b77bee2d 100644
--- a/source/blender/nodes/composite/CMakeLists.txt
+++ b/source/blender/nodes/composite/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2021, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2021 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/nodes/composite/node_composite_tree.cc b/source/blender/nodes/composite/node_composite_tree.cc
index c54382cc1adaec4728167b31dee404caf2f1c950..f12c6633f454eefd87ff85b79b6a46ec0c98680a 100644
--- a/source/blender/nodes/composite/node_composite_tree.cc
+++ b/source/blender/nodes/composite/node_composite_tree.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/composite/node_composite_util.cc b/source/blender/nodes/composite/node_composite_util.cc
index 1f892c1c9e2bddac45bc9be309bcb31493a65d3c..575a32b17852de166dd95b6f40aaff1ec5a3072f 100644
--- a/source/blender/nodes/composite/node_composite_util.cc
+++ b/source/blender/nodes/composite/node_composite_util.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/composite/node_composite_util.hh b/source/blender/nodes/composite/node_composite_util.hh
index 65dbc2065ef0fc291addf4fa3f0c53d274e1221d..3e9c43aa7d2dd2d22e1d782906adee90a7cf3985 100644
--- a/source/blender/nodes/composite/node_composite_util.hh
+++ b/source/blender/nodes/composite/node_composite_util.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_alpha_over.cc b/source/blender/nodes/composite/nodes/node_composite_alpha_over.cc
index a080b7d4840b70e477fb6913628791e9f4b8550e..d392b810bc12062b6d0a2bf7e4209ada354fb8b8 100644
--- a/source/blender/nodes/composite/nodes/node_composite_alpha_over.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_alpha_over.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_antialiasing.cc b/source/blender/nodes/composite/nodes/node_composite_antialiasing.cc
index d889130c2fafcaeaf38aae726eda9dbe27378eb8..f45b678fc5010774898ec8250805f7576592ae5d 100644
--- a/source/blender/nodes/composite/nodes/node_composite_antialiasing.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_antialiasing.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_bilateralblur.cc b/source/blender/nodes/composite/nodes/node_composite_bilateralblur.cc
index 1c3303103f8cafae2eb61aab2c11695e2160c6df..ad4a1f701d6eac2cea90634febd821eeed8784a6 100644
--- a/source/blender/nodes/composite/nodes/node_composite_bilateralblur.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_bilateralblur.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_blur.cc b/source/blender/nodes/composite/nodes/node_composite_blur.cc
index 96dbf0def4abc63f022250263a8b6c3ae098b322..7beffe15c8e6c897da100045f19872ed33321e8a 100644
--- a/source/blender/nodes/composite/nodes/node_composite_blur.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_blur.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_bokehblur.cc b/source/blender/nodes/composite/nodes/node_composite_bokehblur.cc
index b7ab28f3465631235ad46b8a2968fa1a49ac9888..a936bafe6711cf3275b96e4bf4c0127c9214b714 100644
--- a/source/blender/nodes/composite/nodes/node_composite_bokehblur.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_bokehblur.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_bokehimage.cc b/source/blender/nodes/composite/nodes/node_composite_bokehimage.cc
index df502bc625fe437e52724159be8e6411e46cdee6..8330c56736adff7f99e1e7e1e8682d908bb13bb3 100644
--- a/source/blender/nodes/composite/nodes/node_composite_bokehimage.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_bokehimage.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_boxmask.cc b/source/blender/nodes/composite/nodes/node_composite_boxmask.cc
index 499942725c2b11c3362098d81cce9eee6e98459f..f39b69c63f25f3bab1d643d72c4ce9ad7583c802 100644
--- a/source/blender/nodes/composite/nodes/node_composite_boxmask.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_boxmask.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_brightness.cc b/source/blender/nodes/composite/nodes/node_composite_brightness.cc
index 7f60187dddfe0249c8a41bb11571a07d9e40022d..65ed2885d9b96f3bde3eeb40eb0a5d962f83d95c 100644
--- a/source/blender/nodes/composite/nodes/node_composite_brightness.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_brightness.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_channel_matte.cc b/source/blender/nodes/composite/nodes/node_composite_channel_matte.cc
index a53e6a97daec3de3f3f522b56c822f0bbfdbf02c..627f07fdfce20e9620c05da4c733544f9abd21ae 100644
--- a/source/blender/nodes/composite/nodes/node_composite_channel_matte.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_channel_matte.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_chroma_matte.cc b/source/blender/nodes/composite/nodes/node_composite_chroma_matte.cc
index a85cdd05b1432923d877b8e68924e36539d6db98..f899fbd1800844f715227c44231984a465e0a449 100644
--- a/source/blender/nodes/composite/nodes/node_composite_chroma_matte.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_chroma_matte.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_color_matte.cc b/source/blender/nodes/composite/nodes/node_composite_color_matte.cc
index 58bd0bd7d6939b27ca965ffecf0f343fa1fd3351..474fb1b72f2e10bd3012bea2d70c55be9fc367a3 100644
--- a/source/blender/nodes/composite/nodes/node_composite_color_matte.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_color_matte.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_color_spill.cc b/source/blender/nodes/composite/nodes/node_composite_color_spill.cc
index 1ee7686a8b1001c4f2d3449cce6f259064b1e1d1..9ad5dfbaeb2eaf4748faad67a681fd3e6a938443 100644
--- a/source/blender/nodes/composite/nodes/node_composite_color_spill.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_color_spill.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_colorbalance.cc b/source/blender/nodes/composite/nodes/node_composite_colorbalance.cc
index 809641ec147844e340c65a0d86d35d074eeb74fd..dd081c8fc127e6f23901d828fbdd155bf16faccd 100644
--- a/source/blender/nodes/composite/nodes/node_composite_colorbalance.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_colorbalance.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_colorcorrection.cc b/source/blender/nodes/composite/nodes/node_composite_colorcorrection.cc
index 9f1dcf24de9ec97dd56fb3c459422e8bdde94f63..39ecd277cec9863ae5771ec8125969ac6ab9e1aa 100644
--- a/source/blender/nodes/composite/nodes/node_composite_colorcorrection.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_colorcorrection.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_common.cc b/source/blender/nodes/composite/nodes/node_composite_common.cc
index a3fa940460b2cc415bd2bb1052d57999d1760f9a..8dd88d098c446c0f5fd7a3b03c4e04093dfd4cb9 100644
--- a/source/blender/nodes/composite/nodes/node_composite_common.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_common.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_composite.cc b/source/blender/nodes/composite/nodes/node_composite_composite.cc
index b3b0e5bf432599ebb8e972399173d2a307e17dfb..d35ce7dc11ae662b0f2dc9ad2e73ea6548d745b3 100644
--- a/source/blender/nodes/composite/nodes/node_composite_composite.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_composite.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_convert_color_space.cc b/source/blender/nodes/composite/nodes/node_composite_convert_color_space.cc
index 75af21ab9a23c4e83c7bba0ff43a96048a02ae52..303248c3852c35500a98d7d36fcb8cbf3218d67d 100644
--- a/source/blender/nodes/composite/nodes/node_composite_convert_color_space.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_convert_color_space.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_cornerpin.cc b/source/blender/nodes/composite/nodes/node_composite_cornerpin.cc
index e4abc8106e22d2556f694687e9c11eaa654802d1..07da0da0be1c13c1694f55857f5d78a48f481e2d 100644
--- a/source/blender/nodes/composite/nodes/node_composite_cornerpin.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_cornerpin.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_crop.cc b/source/blender/nodes/composite/nodes/node_composite_crop.cc
index e14b7d04ea68ec16b8177407f4d2f08a26eab63d..823e1052dd0c7670b5eb193a0381d4736600389e 100644
--- a/source/blender/nodes/composite/nodes/node_composite_crop.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_crop.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_cryptomatte.cc b/source/blender/nodes/composite/nodes/node_composite_cryptomatte.cc
index 40b467d608a2162ba7a8bba8c6fe3e079e2e26e9..15e7163d7dbefa56efde950cab7d2fba7e53f0f8 100644
--- a/source/blender/nodes/composite/nodes/node_composite_cryptomatte.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_cryptomatte.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_curves.cc b/source/blender/nodes/composite/nodes/node_composite_curves.cc
index 12390a8549dd37df8948b54ee33bf013c743c10b..fff0d467f75a9b6a098ace530d87984fd0109f58 100644
--- a/source/blender/nodes/composite/nodes/node_composite_curves.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_curves.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_defocus.cc b/source/blender/nodes/composite/nodes/node_composite_defocus.cc
index 41200c97b0637195d8d77bf8ce3169a1334adbba..83dd397ff1f7a6a4901164bda2ab050c5504ebe9 100644
--- a/source/blender/nodes/composite/nodes/node_composite_defocus.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_defocus.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_denoise.cc b/source/blender/nodes/composite/nodes/node_composite_denoise.cc
index 8b9ccfe47e0711ca40811afac993e177f133eb7b..051a2580ef9c290603a1d440ec51cca9f1c1e830 100644
--- a/source/blender/nodes/composite/nodes/node_composite_denoise.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_denoise.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_despeckle.cc b/source/blender/nodes/composite/nodes/node_composite_despeckle.cc
index ef9c760622c675952529a9be32e3a9f94eb4b45b..66a18cfa36964c9be8f54323d6be86bac13fad20 100644
--- a/source/blender/nodes/composite/nodes/node_composite_despeckle.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_despeckle.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_diff_matte.cc b/source/blender/nodes/composite/nodes/node_composite_diff_matte.cc
index 9b3360c9e7dc91cca5596a6716f6823817345e0b..20dd61a97256cba5468b67c99518abe4c27ebba4 100644
--- a/source/blender/nodes/composite/nodes/node_composite_diff_matte.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_diff_matte.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_dilate.cc b/source/blender/nodes/composite/nodes/node_composite_dilate.cc
index efd06ce8fd454d926afb373ca2d0e9bb2cbc0eb0..9bdb9ae08372466bc278069e6c2a0c7fefa6f133 100644
--- a/source/blender/nodes/composite/nodes/node_composite_dilate.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_dilate.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_directionalblur.cc b/source/blender/nodes/composite/nodes/node_composite_directionalblur.cc
index 2215e62659b74b78617e44d9ea281e2e381f541f..3d82ab04fc98b817658c2d674c9bd20bb7e5e220 100644
--- a/source/blender/nodes/composite/nodes/node_composite_directionalblur.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_directionalblur.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_displace.cc b/source/blender/nodes/composite/nodes/node_composite_displace.cc
index 819680e1967a95bef9b80267cfbb21b7ef0a8fd4..0b0d42cbb080534a00b9bb9025f885067fa3304f 100644
--- a/source/blender/nodes/composite/nodes/node_composite_displace.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_displace.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_distance_matte.cc b/source/blender/nodes/composite/nodes/node_composite_distance_matte.cc
index 82781588c9d585178dd39ace8e8d2501755b8429..a8646d8498e47ac64578e423d596485ed0bdcc41 100644
--- a/source/blender/nodes/composite/nodes/node_composite_distance_matte.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_distance_matte.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_double_edge_mask.cc b/source/blender/nodes/composite/nodes/node_composite_double_edge_mask.cc
index 959d4ecf69e39be4d9a6ba21799fb8fd8cd7dcba..9dc2b22361886e56cc56e22b0c3afb2a9c9fe4cc 100644
--- a/source/blender/nodes/composite/nodes/node_composite_double_edge_mask.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_double_edge_mask.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_ellipsemask.cc b/source/blender/nodes/composite/nodes/node_composite_ellipsemask.cc
index b2be8abf0cd27a2f5bdb3f6745e2f6a85746e3b9..4da6a0a442e4dcf2bd6485c9672ca056b6728db2 100644
--- a/source/blender/nodes/composite/nodes/node_composite_ellipsemask.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_ellipsemask.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_exposure.cc b/source/blender/nodes/composite/nodes/node_composite_exposure.cc
index 2798f4a46e862506c24502ba0c8f1ceefc4684ff..881cfc11058e666e8051537eb3a40b83720a19a9 100644
--- a/source/blender/nodes/composite/nodes/node_composite_exposure.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_exposure.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_filter.cc b/source/blender/nodes/composite/nodes/node_composite_filter.cc
index cd51e0d3c85dab160aa16e8cf935ac9f998ca014..c343c21feb2557848cdb5176340e74a759944776 100644
--- a/source/blender/nodes/composite/nodes/node_composite_filter.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_filter.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_flip.cc b/source/blender/nodes/composite/nodes/node_composite_flip.cc
index dba98a42e938130ade20f16438c85677281cbc5d..37b9a2d020d7a71b49901f6c21713b061b5a3c52 100644
--- a/source/blender/nodes/composite/nodes/node_composite_flip.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_flip.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_gamma.cc b/source/blender/nodes/composite/nodes/node_composite_gamma.cc
index aafd558f0dfe90d421083b3d7f3e49cc6cb62261..b4b8502e9156c1da189e3fabee27544cb263ecfb 100644
--- a/source/blender/nodes/composite/nodes/node_composite_gamma.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_gamma.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_glare.cc b/source/blender/nodes/composite/nodes/node_composite_glare.cc
index 479eeef3808a4e4225ea12788d19d0ffee7f8dcf..7f21d30cfa6b283c5dbc16a1a42069a99f3528aa 100644
--- a/source/blender/nodes/composite/nodes/node_composite_glare.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_glare.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_hue_sat_val.cc b/source/blender/nodes/composite/nodes/node_composite_hue_sat_val.cc
index c98cfcdba02771c2c60ee488b0ac6ea81c236f8c..08a048829df92e378bda1a2e1a81d173afd6727a 100644
--- a/source/blender/nodes/composite/nodes/node_composite_hue_sat_val.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_hue_sat_val.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_huecorrect.cc b/source/blender/nodes/composite/nodes/node_composite_huecorrect.cc
index 347c1588af3afa869189a4720218dd27b8e2e786..bb5e6bf06a835c80218485cb54ebc5a8b2d6e065 100644
--- a/source/blender/nodes/composite/nodes/node_composite_huecorrect.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_huecorrect.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_id_mask.cc b/source/blender/nodes/composite/nodes/node_composite_id_mask.cc
index 4b7674286ddee2c31be6e5ac806b42bc0b402c92..25ab9aa63fce4bcaefc16d31e619f07575ca8199 100644
--- a/source/blender/nodes/composite/nodes/node_composite_id_mask.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_id_mask.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_image.cc b/source/blender/nodes/composite/nodes/node_composite_image.cc
index f2b9fbc2215b3445c1fdc4b9dda81b46071a641f..d071e9f13db3fb26f8c385d971294a84d7345b89 100644
--- a/source/blender/nodes/composite/nodes/node_composite_image.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_image.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_inpaint.cc b/source/blender/nodes/composite/nodes/node_composite_inpaint.cc
index f470038ad39b15775b5054b8ae587f31d65151d6..2958d1b2869cb59b43a4418625680d67c6cd0dba 100644
--- a/source/blender/nodes/composite/nodes/node_composite_inpaint.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_inpaint.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_invert.cc b/source/blender/nodes/composite/nodes/node_composite_invert.cc
index c5435f5fb92e7f5488acfda69b4e30fd91bf22b5..6dff043537a92a8d3b0c78a14b0b7d6f98301ece 100644
--- a/source/blender/nodes/composite/nodes/node_composite_invert.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_invert.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_keying.cc b/source/blender/nodes/composite/nodes/node_composite_keying.cc
index 26a7297acd518c04ab3a0d7aa58ba596b65964fc..fbfdf2ad3c6e4154763f45087c4d4387a7e2ca6c 100644
--- a/source/blender/nodes/composite/nodes/node_composite_keying.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_keying.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_keyingscreen.cc b/source/blender/nodes/composite/nodes/node_composite_keyingscreen.cc
index 4862fcaa2e0b510e186bcdfe7bc24ad3529f2c61..44694623343fbb2ac986f904bb029cd242065aab 100644
--- a/source/blender/nodes/composite/nodes/node_composite_keyingscreen.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_keyingscreen.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_lensdist.cc b/source/blender/nodes/composite/nodes/node_composite_lensdist.cc
index 2d85e53016d38a6c374bbe16c5c1e1b962dd8b82..593b7cc9b717f6d8d1849433e7635af14f17deec 100644
--- a/source/blender/nodes/composite/nodes/node_composite_lensdist.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_lensdist.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_levels.cc b/source/blender/nodes/composite/nodes/node_composite_levels.cc
index 57202d95cb74b55c5763be6cc892d6ab31150c95..a30567672f01fe8c63c8384f7cdcaa896151b0a8 100644
--- a/source/blender/nodes/composite/nodes/node_composite_levels.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_levels.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_luma_matte.cc b/source/blender/nodes/composite/nodes/node_composite_luma_matte.cc
index 851b218b617d40b3603e80726aea9bde12611077..94697a2aafd8c7cb0f239717e43bf01e3a9248a8 100644
--- a/source/blender/nodes/composite/nodes/node_composite_luma_matte.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_luma_matte.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_map_range.cc b/source/blender/nodes/composite/nodes/node_composite_map_range.cc
index 93622236c736e806a9fa6b2e6a5864baa313ed24..9b88e99060c8287ea0692360b25873d0d532e50b 100644
--- a/source/blender/nodes/composite/nodes/node_composite_map_range.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_map_range.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_map_uv.cc b/source/blender/nodes/composite/nodes/node_composite_map_uv.cc
index 92573a362e401c6a9e57d170e24df80054379346..31961f07ea4c14d627e7f6292bea8760aa975248 100644
--- a/source/blender/nodes/composite/nodes/node_composite_map_uv.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_map_uv.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_map_value.cc b/source/blender/nodes/composite/nodes/node_composite_map_value.cc
index 79f25dcee5f8b6df0ce0f881153d6da4870dc605..b069cce93fc8fbf3bcef1d93f05dea8dafb8670a 100644
--- a/source/blender/nodes/composite/nodes/node_composite_map_value.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_map_value.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_mask.cc b/source/blender/nodes/composite/nodes/node_composite_mask.cc
index b74c7341ce34e9a1491ca2e7b9aedcc69d1c6f25..5b8fac5d1c0a8699d461c26d7b1a6dd2a156c2ef 100644
--- a/source/blender/nodes/composite/nodes/node_composite_mask.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_mask.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_math.cc b/source/blender/nodes/composite/nodes/node_composite_math.cc
index 1083d85ba7c73195cc502885b4a56a58e492d7d3..7b2eadef2cb68dd295dd23f3baad3d02465a12ff 100644
--- a/source/blender/nodes/composite/nodes/node_composite_math.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_math.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_mixrgb.cc b/source/blender/nodes/composite/nodes/node_composite_mixrgb.cc
index 7a10fa599deda04cba223ca483e9bcf0a1863d1b..fc11aa188b0260e2ba89dccedb09d127a58971d9 100644
--- a/source/blender/nodes/composite/nodes/node_composite_mixrgb.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_mixrgb.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_movieclip.cc b/source/blender/nodes/composite/nodes/node_composite_movieclip.cc
index f6f00864839e953b5b54b5caf4f6ec4bceb7f83b..a4d5f294fe02d833bc234f169fac3341a1bb0a52 100644
--- a/source/blender/nodes/composite/nodes/node_composite_movieclip.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_movieclip.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_moviedistortion.cc b/source/blender/nodes/composite/nodes/node_composite_moviedistortion.cc
index 396c6fa7a132effbed6b4ec92e06ef9a3196d91c..9c6c6a40b2c1ceba81df19b4a9f9793073f05ac9 100644
--- a/source/blender/nodes/composite/nodes/node_composite_moviedistortion.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_moviedistortion.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_normal.cc b/source/blender/nodes/composite/nodes/node_composite_normal.cc
index da44d3559664db81eaaf38dccc7a5933637a832c..c04e4bed660a19b53c8e351eb85fdd989e4a0871 100644
--- a/source/blender/nodes/composite/nodes/node_composite_normal.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_normal.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_normalize.cc b/source/blender/nodes/composite/nodes/node_composite_normalize.cc
index 3d25187e5e62b2334b629a13757a89002f011007..49318279bdbc7ab3e471a742aa0a150eac28d2b2 100644
--- a/source/blender/nodes/composite/nodes/node_composite_normalize.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_normalize.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_output_file.cc b/source/blender/nodes/composite/nodes/node_composite_output_file.cc
index 544c84373949fc29df28ba04d826b1c88b4dbcf5..9602070dc2f08910c28309c5e9a5f44559eefd6b 100644
--- a/source/blender/nodes/composite/nodes/node_composite_output_file.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_output_file.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_pixelate.cc b/source/blender/nodes/composite/nodes/node_composite_pixelate.cc
index baded2186d3eeb327086c95c7d0515083dc05471..529aa0f84de94bf680c6a3af6a4b4923f9d74495 100644
--- a/source/blender/nodes/composite/nodes/node_composite_pixelate.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_pixelate.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_planetrackdeform.cc b/source/blender/nodes/composite/nodes/node_composite_planetrackdeform.cc
index 453501b6ab167ca8fb749526d1f53628324f1689..c69a9362488a41b94936e492fe1860546e934a8d 100644
--- a/source/blender/nodes/composite/nodes/node_composite_planetrackdeform.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_planetrackdeform.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_posterize.cc b/source/blender/nodes/composite/nodes/node_composite_posterize.cc
index f05ed3d80b740e5f44e4bbb8ec28bd4e6224c95e..c97035d55ea000e987ad5fc053ba420b4a7382f2 100644
--- a/source/blender/nodes/composite/nodes/node_composite_posterize.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_posterize.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_premulkey.cc b/source/blender/nodes/composite/nodes/node_composite_premulkey.cc
index aec005ee25ac2e86508468c9ed3aa95ce581c7f1..000cc9df90a7ff031267febccbded390eb90425f 100644
--- a/source/blender/nodes/composite/nodes/node_composite_premulkey.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_premulkey.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_rgb.cc b/source/blender/nodes/composite/nodes/node_composite_rgb.cc
index feaa3ee8c195b64350171d0eacbb3cf786fa0042..5bc4c67dd8e80e12265ba2b8d2da0db8008f7198 100644
--- a/source/blender/nodes/composite/nodes/node_composite_rgb.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_rgb.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_rotate.cc b/source/blender/nodes/composite/nodes/node_composite_rotate.cc
index 96ac4f3db5b9b1ccdb9c1de64f84b00d533ed50b..a083bc1837b767bee2ce04d126b2e05d186d130c 100644
--- a/source/blender/nodes/composite/nodes/node_composite_rotate.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_rotate.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_scale.cc b/source/blender/nodes/composite/nodes/node_composite_scale.cc
index dba08dd7eb12d4dbefb8a18bcb045dcd62a29a99..b2b42a3613c4f33fbca1dc3401de9e76f1f7a271 100644
--- a/source/blender/nodes/composite/nodes/node_composite_scale.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_scale.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_scene_time.cc b/source/blender/nodes/composite/nodes/node_composite_scene_time.cc
index 5c53c1df23750dc5b7ff80497d0e4ddbce5df821..20bafb0d3d497e8b6fc394def96257c3c16a780f 100644
--- a/source/blender/nodes/composite/nodes/node_composite_scene_time.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_scene_time.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 /** \file
  * \ingroup cmpnodes
  */
diff --git a/source/blender/nodes/composite/nodes/node_composite_sepcomb_hsva.cc b/source/blender/nodes/composite/nodes/node_composite_sepcomb_hsva.cc
index 41d0668dbf28b0b520be737101ef60186eb0b2fb..349c27d876df467b12a53500fde3667d21ad5bbb 100644
--- a/source/blender/nodes/composite/nodes/node_composite_sepcomb_hsva.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_sepcomb_hsva.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_sepcomb_rgba.cc b/source/blender/nodes/composite/nodes/node_composite_sepcomb_rgba.cc
index bd200b0886faebecacd74e7dd27f1a3a4b07150d..c46603be8470b19ccef0358be24c19e5aab57ea0 100644
--- a/source/blender/nodes/composite/nodes/node_composite_sepcomb_rgba.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_sepcomb_rgba.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_sepcomb_xyz.cc b/source/blender/nodes/composite/nodes/node_composite_sepcomb_xyz.cc
index 5dfcf5dca1e2eae0dcc84c3c3999ba0c56f6018f..4979c376cab45e4c24235ba3d9e4bdb7afa97b50 100644
--- a/source/blender/nodes/composite/nodes/node_composite_sepcomb_xyz.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_sepcomb_xyz.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_sepcomb_ycca.cc b/source/blender/nodes/composite/nodes/node_composite_sepcomb_ycca.cc
index 79cb379806ccc8fb179978429246266aca174ad6..9b5c153fddfbaa2de3ec870c992ee792198f8854 100644
--- a/source/blender/nodes/composite/nodes/node_composite_sepcomb_ycca.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_sepcomb_ycca.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_sepcomb_yuva.cc b/source/blender/nodes/composite/nodes/node_composite_sepcomb_yuva.cc
index 29c0f753e0003586d6d35af630c8068a2d674360..e458c9cfb7e319a046a90199b868baa2c2ad09cb 100644
--- a/source/blender/nodes/composite/nodes/node_composite_sepcomb_yuva.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_sepcomb_yuva.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_setalpha.cc b/source/blender/nodes/composite/nodes/node_composite_setalpha.cc
index 18f8fe4583376320dc0437d521bab5840d3869ef..8aeaafbbf6720f51095ae2797e78b8019f682a66 100644
--- a/source/blender/nodes/composite/nodes/node_composite_setalpha.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_setalpha.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_split_viewer.cc b/source/blender/nodes/composite/nodes/node_composite_split_viewer.cc
index 68a6c8c2943639b81ad8c6ab2c0439a9a7affd65..ab325c4559f73cf7a03fac28da76970f890068e9 100644
--- a/source/blender/nodes/composite/nodes/node_composite_split_viewer.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_split_viewer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_stabilize2d.cc b/source/blender/nodes/composite/nodes/node_composite_stabilize2d.cc
index 5fe057f4f2ecb3b97d28e9e4aadde34827878032..63d00a0864b41d5865ba97f97395c9b8456ccb45 100644
--- a/source/blender/nodes/composite/nodes/node_composite_stabilize2d.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_stabilize2d.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_sunbeams.cc b/source/blender/nodes/composite/nodes/node_composite_sunbeams.cc
index 34433e2bf40403d3fee917879aae11790b1d12d4..766f26745ef381de692c30a81524c5ed3cdea8df 100644
--- a/source/blender/nodes/composite/nodes/node_composite_sunbeams.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_sunbeams.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_switch.cc b/source/blender/nodes/composite/nodes/node_composite_switch.cc
index 342813f8d67128741d5b953db075852799a582f7..bda490572e99b70e17f3fddc02b9585d2ba40a03 100644
--- a/source/blender/nodes/composite/nodes/node_composite_switch.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_switch.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_switchview.cc b/source/blender/nodes/composite/nodes/node_composite_switchview.cc
index 606eaa8ed993b64f348181731a38384a3fffee45..2cf3da03a05964a6519ee593647b51072eb48ac0 100644
--- a/source/blender/nodes/composite/nodes/node_composite_switchview.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_switchview.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_texture.cc b/source/blender/nodes/composite/nodes/node_composite_texture.cc
index 5c2446d4f2ce916382a6e0b0a64dd0c8c3c546a6..7571e97a2cd78216cb61b8cd2e742fe90377567d 100644
--- a/source/blender/nodes/composite/nodes/node_composite_texture.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_texture.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_tonemap.cc b/source/blender/nodes/composite/nodes/node_composite_tonemap.cc
index 08ec998dfa20a9981e93bbf16a3989da308677d0..cdfe97b038d932801722366a845b3755cbe9a847 100644
--- a/source/blender/nodes/composite/nodes/node_composite_tonemap.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_tonemap.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_trackpos.cc b/source/blender/nodes/composite/nodes/node_composite_trackpos.cc
index 3a45319d0ade01d6b85f3acc0975c9bf458e9c07..a6e4d63d0584452f73b1de525db52935f3dc89ae 100644
--- a/source/blender/nodes/composite/nodes/node_composite_trackpos.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_trackpos.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_transform.cc b/source/blender/nodes/composite/nodes/node_composite_transform.cc
index 6afc173df040225d9307a0ea03ce2a8d767437bb..fe72f5e33ca137cbc85e528ea995150a1c01cafb 100644
--- a/source/blender/nodes/composite/nodes/node_composite_transform.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_transform.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2011 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2011 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_translate.cc b/source/blender/nodes/composite/nodes/node_composite_translate.cc
index 6666d161b4a258ba2295072f1c94c9405d909c8a..bbdc8ca4d3133cc249e64285feb04aff8fd9f1d6 100644
--- a/source/blender/nodes/composite/nodes/node_composite_translate.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_translate.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_val_to_rgb.cc b/source/blender/nodes/composite/nodes/node_composite_val_to_rgb.cc
index 797bd931577671802ee2f8a297d1ad1c7e6509d0..f71028bf8c118ac8f5190432c11a2bf32ef46948 100644
--- a/source/blender/nodes/composite/nodes/node_composite_val_to_rgb.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_val_to_rgb.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_value.cc b/source/blender/nodes/composite/nodes/node_composite_value.cc
index 076adc1c01c9b6e253e1b5c120f61ec69f5cde71..a3269d3d1c20c7817ed7e8b8db91fcc034dcf650 100644
--- a/source/blender/nodes/composite/nodes/node_composite_value.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_value.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_vec_blur.cc b/source/blender/nodes/composite/nodes/node_composite_vec_blur.cc
index a461688641d60f9ddce779d35a36078cc16dcbdb..741f2e0e8168cb6d0f0dfe45386d9b7152dc917c 100644
--- a/source/blender/nodes/composite/nodes/node_composite_vec_blur.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_vec_blur.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_viewer.cc b/source/blender/nodes/composite/nodes/node_composite_viewer.cc
index a57f1fbb8efc9a725cc8ffaa6a683735b7bb1bb8..05f395183b5c842eb7c9b8af5e32710dbfae0f98 100644
--- a/source/blender/nodes/composite/nodes/node_composite_viewer.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_viewer.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/composite/nodes/node_composite_zcombine.cc b/source/blender/nodes/composite/nodes/node_composite_zcombine.cc
index 7a6d5b3af5f861df3382a8067b93615c0bcf9599..be90aeb7accad748dcc813bb85ddcc69862f46e8 100644
--- a/source/blender/nodes/composite/nodes/node_composite_zcombine.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_zcombine.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup cmpnodes
diff --git a/source/blender/nodes/function/CMakeLists.txt b/source/blender/nodes/function/CMakeLists.txt
index 6418c525776959d54da5f0a3d9336caa9586524a..7ffc5c71b66f28e9430ad5516b62c372882527a0 100644
--- a/source/blender/nodes/function/CMakeLists.txt
+++ b/source/blender/nodes/function/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2021, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2021 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/nodes/function/node_function_util.cc b/source/blender/nodes/function/node_function_util.cc
index 0137b298f452e349f9e4d2753e3daf736db067d9..d956f91a91d5c4f14665b15fb57af13846e58ef9 100644
--- a/source/blender/nodes/function/node_function_util.cc
+++ b/source/blender/nodes/function/node_function_util.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_function_util.hh"
 #include "node_util.h"
diff --git a/source/blender/nodes/function/node_function_util.hh b/source/blender/nodes/function/node_function_util.hh
index 69c617b4f012853fbea5437e52aa983f335328f3..05130949d23a3e8c2197d7617badd601ae3995b6 100644
--- a/source/blender/nodes/function/node_function_util.hh
+++ b/source/blender/nodes/function/node_function_util.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/function/nodes/legacy/node_fn_random_float.cc b/source/blender/nodes/function/nodes/legacy/node_fn_random_float.cc
index 9470b82a8eb1dc4bf4c08b5bcaac6cef6b0e3818..a34cfe578d04dbc43faa7de5adbfe2d46b8eef90 100644
--- a/source/blender/nodes/function/nodes/legacy/node_fn_random_float.cc
+++ b/source/blender/nodes/function/nodes/legacy/node_fn_random_float.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_function_util.hh"
 
diff --git a/source/blender/nodes/function/nodes/node_fn_align_euler_to_vector.cc b/source/blender/nodes/function/nodes/node_fn_align_euler_to_vector.cc
index bcc035e6ede4d49714c4952627086cb18769b97c..e3d3b8f5ebcb4c23bce55328c196042cde40e7a9 100644
--- a/source/blender/nodes/function/nodes/node_fn_align_euler_to_vector.cc
+++ b/source/blender/nodes/function/nodes/node_fn_align_euler_to_vector.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/function/nodes/node_fn_boolean_math.cc b/source/blender/nodes/function/nodes/node_fn_boolean_math.cc
index 9425c4ff3288b696c13de8ebd4618e84aa739c15..e29dc0c0c285209cac16e1413797b781429b8184 100644
--- a/source/blender/nodes/function/nodes/node_fn_boolean_math.cc
+++ b/source/blender/nodes/function/nodes/node_fn_boolean_math.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_listbase.h"
 #include "BLI_string.h"
diff --git a/source/blender/nodes/function/nodes/node_fn_compare.cc b/source/blender/nodes/function/nodes/node_fn_compare.cc
index 13a7ff866244114e5be081da9316d56578df6d88..2e2e5227a65919ebdb1ecceed7c328d44e49e163 100644
--- a/source/blender/nodes/function/nodes/node_fn_compare.cc
+++ b/source/blender/nodes/function/nodes/node_fn_compare.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <cmath>
 
diff --git a/source/blender/nodes/function/nodes/node_fn_float_to_int.cc b/source/blender/nodes/function/nodes/node_fn_float_to_int.cc
index 488787980dc1379b78352e7e2af4578d4d630926..fddc0e990828b8baeb67412e07b4b907b8cd3dbd 100644
--- a/source/blender/nodes/function/nodes/node_fn_float_to_int.cc
+++ b/source/blender/nodes/function/nodes/node_fn_float_to_int.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <cmath>
 
diff --git a/source/blender/nodes/function/nodes/node_fn_input_bool.cc b/source/blender/nodes/function/nodes/node_fn_input_bool.cc
index 583570effd94411dc9ee22930ff69c0cd89f98c8..5ced719627fe3e8ed595a795d1ebc7ae689d8981 100644
--- a/source/blender/nodes/function/nodes/node_fn_input_bool.cc
+++ b/source/blender/nodes/function/nodes/node_fn_input_bool.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_function_util.hh"
 
diff --git a/source/blender/nodes/function/nodes/node_fn_input_color.cc b/source/blender/nodes/function/nodes/node_fn_input_color.cc
index 1fad5b2f5f44e40b26467e7a499629691ea8ef01..f76bb904153c27980add8e66725315029ce86d8c 100644
--- a/source/blender/nodes/function/nodes/node_fn_input_color.cc
+++ b/source/blender/nodes/function/nodes/node_fn_input_color.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_function_util.hh"
 
diff --git a/source/blender/nodes/function/nodes/node_fn_input_int.cc b/source/blender/nodes/function/nodes/node_fn_input_int.cc
index dc30ecb253c80e6b208769e591818b9eb14651b8..1e5dcd5ae7a7987d9dbc0e49d8f69862a94040b9 100644
--- a/source/blender/nodes/function/nodes/node_fn_input_int.cc
+++ b/source/blender/nodes/function/nodes/node_fn_input_int.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_function_util.hh"
 
diff --git a/source/blender/nodes/function/nodes/node_fn_input_special_characters.cc b/source/blender/nodes/function/nodes/node_fn_input_special_characters.cc
index 681bc16a301c045a873aa6b64a03e30776526952..88dc95aa026b8279654cbf70c6de6aa81c0daeb9 100644
--- a/source/blender/nodes/function/nodes/node_fn_input_special_characters.cc
+++ b/source/blender/nodes/function/nodes/node_fn_input_special_characters.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_function_util.hh"
 
diff --git a/source/blender/nodes/function/nodes/node_fn_input_string.cc b/source/blender/nodes/function/nodes/node_fn_input_string.cc
index 4abb352d802b22f6a72214a837d594f300c3172c..124a8572f7834afb365eb25b664f6d4a890af15c 100644
--- a/source/blender/nodes/function/nodes/node_fn_input_string.cc
+++ b/source/blender/nodes/function/nodes/node_fn_input_string.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_function_util.hh"
 
diff --git a/source/blender/nodes/function/nodes/node_fn_input_vector.cc b/source/blender/nodes/function/nodes/node_fn_input_vector.cc
index ba9600b461cf9f02cd2ceed99d2e5a505d932ad8..898c19e92f0209d0e455513a4c152a3705a175fa 100644
--- a/source/blender/nodes/function/nodes/node_fn_input_vector.cc
+++ b/source/blender/nodes/function/nodes/node_fn_input_vector.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_function_util.hh"
 
diff --git a/source/blender/nodes/function/nodes/node_fn_random_value.cc b/source/blender/nodes/function/nodes/node_fn_random_value.cc
index ceea6246cb04cecef517703c3558278027ad57ec..3c4513d4e6225bc9b016ad83ebf0e3c131891aa3 100644
--- a/source/blender/nodes/function/nodes/node_fn_random_value.cc
+++ b/source/blender/nodes/function/nodes/node_fn_random_value.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 // #include "BLI_hash.h"
 #include "BLI_noise.hh"
diff --git a/source/blender/nodes/function/nodes/node_fn_replace_string.cc b/source/blender/nodes/function/nodes/node_fn_replace_string.cc
index afe516a521427156f10a15fcc76a6e2f008a835d..6abcc79cf29dc68381bba3b5a955f2f90ab2a17c 100644
--- a/source/blender/nodes/function/nodes/node_fn_replace_string.cc
+++ b/source/blender/nodes/function/nodes/node_fn_replace_string.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_string_utf8.h"
 
diff --git a/source/blender/nodes/function/nodes/node_fn_rotate_euler.cc b/source/blender/nodes/function/nodes/node_fn_rotate_euler.cc
index 3140aeac975738a1d7dedb3c4b0abad93d75d82a..cf5f1f2d336bc1673568156e4e8349834231b6c1 100644
--- a/source/blender/nodes/function/nodes/node_fn_rotate_euler.cc
+++ b/source/blender/nodes/function/nodes/node_fn_rotate_euler.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_listbase.h"
 #include "BLI_string.h"
diff --git a/source/blender/nodes/function/nodes/node_fn_slice_string.cc b/source/blender/nodes/function/nodes/node_fn_slice_string.cc
index 4055495ec1f52916de1525c8aabeb204f0a3ad89..4a111ac949a6b2572fff5607e882621a09e60cd3 100644
--- a/source/blender/nodes/function/nodes/node_fn_slice_string.cc
+++ b/source/blender/nodes/function/nodes/node_fn_slice_string.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_string_utf8.h"
 
diff --git a/source/blender/nodes/function/nodes/node_fn_string_length.cc b/source/blender/nodes/function/nodes/node_fn_string_length.cc
index bed434c8f2c6080c84ccb0e7c875208bfe21658c..a4158d05be17b8244985b802a42c3cfca976ef0b 100644
--- a/source/blender/nodes/function/nodes/node_fn_string_length.cc
+++ b/source/blender/nodes/function/nodes/node_fn_string_length.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_string_utf8.h"
 
diff --git a/source/blender/nodes/function/nodes/node_fn_value_to_string.cc b/source/blender/nodes/function/nodes/node_fn_value_to_string.cc
index ee0613de9bdf5dbe118e52063bac9b2ebb3ba0f5..c34ff26940be85c19364c3c906005bbf10efe295 100644
--- a/source/blender/nodes/function/nodes/node_fn_value_to_string.cc
+++ b/source/blender/nodes/function/nodes/node_fn_value_to_string.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_function_util.hh"
 #include <iomanip>
diff --git a/source/blender/nodes/geometry/CMakeLists.txt b/source/blender/nodes/geometry/CMakeLists.txt
index 2a8faf65a6d1d29075a28c50828d8e3eb7cfc3ae..f38562a8926f6b887f760709a9ae73cb386aafb9 100644
--- a/source/blender/nodes/geometry/CMakeLists.txt
+++ b/source/blender/nodes/geometry/CMakeLists.txt
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/source/blender/nodes/geometry/node_geometry_exec.cc b/source/blender/nodes/geometry/node_geometry_exec.cc
index 8bf7680c8355937e93a8fee035e05746a6c3553a..474bfaa214a49b8a0eea26673c4881d8c5257f09 100644
--- a/source/blender/nodes/geometry/node_geometry_exec.cc
+++ b/source/blender/nodes/geometry/node_geometry_exec.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "FN_cpp_type_make.hh"
 #include "NOD_geometry_exec.hh"
diff --git a/source/blender/nodes/geometry/node_geometry_tree.cc b/source/blender/nodes/geometry/node_geometry_tree.cc
index a6dec71ed065ccf910dc74b5bbd4a7e226c9d2a5..5fd6268080bae1148c3b2761000ac21f5e95e927 100644
--- a/source/blender/nodes/geometry/node_geometry_tree.cc
+++ b/source/blender/nodes/geometry/node_geometry_tree.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <cstring>
 
diff --git a/source/blender/nodes/geometry/node_geometry_util.cc b/source/blender/nodes/geometry/node_geometry_util.cc
index ceb9a7e1467a42da584b1846f517cbf1c2b8a5de..fc1c73d2851b5e4dacca976cde724252a2f6b55e 100644
--- a/source/blender/nodes/geometry/node_geometry_util.cc
+++ b/source/blender/nodes/geometry/node_geometry_util.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 #include "node_util.h"
diff --git a/source/blender/nodes/geometry/node_geometry_util.hh b/source/blender/nodes/geometry/node_geometry_util.hh
index dddc35271245c316fd384271e323286ba874514f..101613acc2192e9e860b6ede39f2fdd936c60843 100644
--- a/source/blender/nodes/geometry/node_geometry_util.hh
+++ b/source/blender/nodes/geometry/node_geometry_util.hh
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_align_rotation_to_vector.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_align_rotation_to_vector.cc
index 1d0645862389b4b1670cd0aa288de9675ccb53e7..eefcfcb2880b885b5559594352b5658b3e09aa0b 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_align_rotation_to_vector.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_align_rotation_to_vector.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_math_rotation.h"
 #include "BLI_task.hh"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_clamp.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_clamp.cc
index cac2a90a76ce7d8d033e8d459cce4a162db690aa..c1908798f43fcf4135ac337df106090b05b68a51 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_clamp.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_clamp.cc
@@ -1,19 +1,5 @@
 
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "UI_interface.h"
 #include "UI_resources.h"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_color_ramp.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_color_ramp.cc
index ec57422a53119c57bde08f2ca1ec7314504e611a..5a5cadaea12dc2cf2b01c28335f706cef2044dd2 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_color_ramp.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_color_ramp.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_combine_xyz.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_combine_xyz.cc
index 403b9446f751df1c1c23e941763f62421c6f78d3..ec6c65aa8bcd44db73a7e1f7f27208663f33b7aa 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_combine_xyz.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_combine_xyz.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "UI_interface.h"
 #include "UI_resources.h"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_compare.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_compare.cc
index 6cec73d76a2b44c01a6bf8e010200770e1e044a5..2136a07e58e2aae89d26dfe0ee3a4f6d15c23bb9 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_compare.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_compare.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "UI_interface.h"
 #include "UI_resources.h"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_convert.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_convert.cc
index 2b13f57e9907ef061d909112e2909e34c163126d..5ded4efd4f78c581f0efb99b4b2c804e3033b69b 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_convert.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_convert.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "UI_interface.h"
 #include "UI_resources.h"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_curve_map.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_curve_map.cc
index 8e1e763f1adbcde8af58a355bbfd0ed558df782b..800587e2157143040aefb37488892ef54f5a9c8f 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_curve_map.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_curve_map.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_blenlib.h"
 #include "BLI_task.hh"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_fill.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_fill.cc
index a32e3b7412fa9409ef876a5483740c2fdddce29d..21fe8e12e6598b8ae008163c6283d84815b7eb5a 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_fill.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_fill.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "UI_interface.h"
 #include "UI_resources.h"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_map_range.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_map_range.cc
index 398af08749944354a24f41121653413d9947034f..05440b094428d02fa7837126f81a3bf57e0669a9 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_map_range.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_map_range.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_math_base_safe.h"
 #include "BLI_task.hh"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_math.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_math.cc
index 3257d2d7358fe734840629576f1e3363351c804a..9e909ec749bca5f45c935615ce0e8447b511d916 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_math.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_math.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_mix.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_mix.cc
index c0c308985845ccf210e8d07413141181ed41f126..aab33e1ef0178fc4839d9e6fd4fb044f0c284277 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_mix.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_mix.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_proximity.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_proximity.cc
index 20f500b1bd83b72721f2bb0e695a3cec46d6029a..a3af6200ab8ed3650b76cf9a32578911cf2a7e79 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_proximity.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_proximity.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 #include "BLI_timeit.hh"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_randomize.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_randomize.cc
index 92a946b225ba5892523d80aeaa5f2d9a1fe7026d..6a306229b8cdfb9946aadbdc26437bdccb0f2e60 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_randomize.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_randomize.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_hash.h"
 #include "BLI_rand.hh"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_sample_texture.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_sample_texture.cc
index a71431bdf8ed35eac9f381c67a70106d845fcf05..42719d4bf1a1dc79bbd527906ed3dc7311ea677e 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_sample_texture.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_sample_texture.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_compiler_attrs.h"
 #include "BLI_task.hh"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_separate_xyz.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_separate_xyz.cc
index 960ec5405560866fa8f909bc8cda262d17aecfad..85ffbf6679b9fb9887bedfb2af9d0855a3d936da 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_separate_xyz.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_separate_xyz.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "UI_interface.h"
 #include "UI_resources.h"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_transfer.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_transfer.cc
index a85a7c56cb9bb6492b263fd1d44690869ed750d5..802feb88ce244784194d1f46c7548931cfe4a711 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_transfer.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_transfer.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_kdopbvh.h"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_vector_math.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_vector_math.cc
index 5b3c3c05a6acb16f2fb85c9dd1334bf062e0fd13..83ece031dd2da23336c96dcf80c3d29ce6548e80 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_vector_math.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_vector_math.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_math_base_safe.h"
 #include "BLI_task.hh"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_vector_rotate.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_vector_rotate.cc
index 3738c4ad14ddf5e73ec08adf37d82b46ce335a00..ccf1bdb0a19027658fb8360e7f902231043fe8e4 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_vector_rotate.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_vector_rotate.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_endpoints.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_endpoints.cc
index 51564d8d200473f8b1d82efe7b87a1dd1200e00f..b83aa8b69a9980505df5573d88536c5fae252a92 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_endpoints.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_endpoints.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 #include "BLI_timeit.hh"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_reverse.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_reverse.cc
index 844baa5396249784ca6ccf373a80a1335440a6bc..6deaf5b554ae056ee6e1003c924bcc15a7174926 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_reverse.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_reverse.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_select_by_handle_type.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_select_by_handle_type.cc
index 780756bcbca3b29bec5005ac670496505d663b3b..f0a201c5adfab79d7ec27cffa9511035fc1aa734 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_select_by_handle_type.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_select_by_handle_type.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_set_handles.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_set_handles.cc
index a82b917e8176bf8fd5d8c97fc2d87355cba104ab..b574b2e3cff9b08eaa0fc9fd598a9b79c424e018 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_set_handles.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_set_handles.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_spline_type.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_spline_type.cc
index 6fd82e6a1bbef9601fab2aceb779d79e88c7aaed..b8696e1eb521ff8e83951ee60d03341ddc18a45b 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_spline_type.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_spline_type.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_subdivide.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_subdivide.cc
index 4621a1656aac25f03ab81ee4373168844b5e18f4..8ae9df78936c69e27f35d674c73197275112cff1 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_subdivide.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_subdivide.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 #include "BLI_timeit.hh"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_to_points.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_to_points.cc
index 1e6b7f92a77ff62fd80395e864219f9fc30b6f89..64627e61910bcc0939a4da6229e5cce381e930f1 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_to_points.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_curve_to_points.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 #include "BLI_task.hh"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_delete_geometry.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_delete_geometry.cc
index f7fd12d775afcc503a6186ec9b943cfbfa8447f5..a0b862546bc8ebb75ffec5cd4a77a87b83bb8b2e 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_delete_geometry.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_delete_geometry.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_edge_split.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_edge_split.cc
index e628edb7e179010aa8834cc80241ccc01b55f53a..74fea7cef22baa92644522d164363aa7cca307ca 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_edge_split.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_edge_split.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_modifier_types.h"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_material_assign.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_material_assign.cc
index 8fd6b1e299f4f824d41cace9e7d87683e323f088..cb5f4044d6f2ef85042fbb06c6a2fbeebc61953f 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_material_assign.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_material_assign.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_mesh_to_curve.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_mesh_to_curve.cc
index d026fff003fd97346133d8c0b88c4a9c99b4a6e2..ff86a92f2c763058b7827b77e2f619c9b4a3cf13 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_mesh_to_curve.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_mesh_to_curve.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "GEO_mesh_to_curve.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_distribute.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_distribute.cc
index 29eff373d15e06baafb353be018025c2107bcfbd..f7cd0624b53b4c98ada6e8b26c8e354245810415 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_distribute.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_distribute.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_hash.h"
 #include "BLI_kdtree.h"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_instance.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_instance.cc
index faf0b1a5fe704ea955499da9b9d9f333450f1975..3d31773300d33c19bce763627522af1a57f22180 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_instance.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_instance.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_collection_types.h"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_rotate.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_rotate.cc
index ad87ec5541bbb4f0987fcad4c13a0fa38658b5cf..2895c15cb8c2e420bc59bb919ea3f2b33cc06814 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_rotate.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_rotate.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_math_rotation.h"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_scale.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_scale.cc
index 69e69a24e29cac3cb3b489e5122792b907d49458..b51ef22fb49516afcf37ad07669c295cf595f102 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_scale.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_scale.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_colorband.h"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_separate.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_separate.cc
index b9760587706c1499d683e87519c75e872abae9d9..541be1933af1b77915606d7d39b3d00dbd8d56d6 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_separate.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_separate.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_attribute_math.hh"
 #include "BKE_mesh.h"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_translate.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_translate.cc
index 385c3d9f22d51786c93a5cdce4701ccc862f0763..c1486da3c2eafba939b1f0769096a6a2827f4428 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_translate.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_translate.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "UI_interface.h"
 #include "UI_resources.h"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_points_to_volume.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_points_to_volume.cc
index f54ffc53a6eb3ec6adc0d4fcbd36f43c61e8f76e..c83571f1967a3eb85ffe293368469b2981aec4d1 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_points_to_volume.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_points_to_volume.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifdef WITH_OPENVDB
 #  include <openvdb/openvdb.h>
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_raycast.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_raycast.cc
index cfae88e06256f9ff2b0f6dd0f2c2ed56296c456b..1420edcca0b8711f9a975937c9e1ee43e2dcf7a4 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_raycast.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_raycast.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_select_by_material.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_select_by_material.cc
index 59ac697b658e1f627c5e87e83cbc3127770d5065..150fd56abe31f106304c46dd4e25fe0f352d64cd 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_select_by_material.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_select_by_material.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_subdivision_surface.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_subdivision_surface.cc
index 7c5553cb5e415e1a117ec9d79176662b93d18137..9eef4b84c360e2d3c55924a71fe5d7ab1da3469b 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_subdivision_surface.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_subdivision_surface.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_mesh.h"
 #include "BKE_subdiv.h"
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_volume_to_mesh.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_volume_to_mesh.cc
index 42fbc49ed4bc9f3c1a195cb1ddb0c8c86f0080f4..768932a7fe74f93c36abb1e1be9481810ff3d98d 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_volume_to_mesh.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_volume_to_mesh.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DEG_depsgraph_query.h"
 #ifdef WITH_OPENVDB
diff --git a/source/blender/nodes/geometry/nodes/node_geo_accumulate_field.cc b/source/blender/nodes/geometry/nodes/node_geo_accumulate_field.cc
index 6c2e72cf14f0c2ec38aa2e1eabf683dcc96007bc..ea26eec0c152b3f59f027e76acd089cb36786749 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_accumulate_field.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_accumulate_field.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_attribute_math.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_attribute_capture.cc b/source/blender/nodes/geometry/nodes/node_geo_attribute_capture.cc
index 840dfd2fbd319b639d705ea028997214c2fd932c..45a6aabeb036ef9b0b9b042b9072e977febd145e 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_attribute_capture.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_attribute_capture.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "UI_interface.h"
 #include "UI_resources.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_attribute_domain_size.cc b/source/blender/nodes/geometry/nodes/node_geo_attribute_domain_size.cc
index 609ef39eb3ff3bd49c4f6c440948128f979656ec..b6d677154d0179cf31812df81288934e81959155 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_attribute_domain_size.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_attribute_domain_size.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "UI_interface.h"
 #include "UI_resources.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_attribute_remove.cc b/source/blender/nodes/geometry/nodes/node_geo_attribute_remove.cc
index 8ed50b2cc75c1202b4039cb967e28a2b26594f15..6424fccbe040fc7ecadc19f6e55b2b97792a3031 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_attribute_remove.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_attribute_remove.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_attribute_statistic.cc b/source/blender/nodes/geometry/nodes/node_geo_attribute_statistic.cc
index 7df032b150ba36b8b2e2266cd4194ece9219b6d4..1153f18ffd4023f42195b0981a44ea7d8d01b49e 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_attribute_statistic.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_attribute_statistic.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <algorithm>
 #include <numeric>
diff --git a/source/blender/nodes/geometry/nodes/node_geo_boolean.cc b/source/blender/nodes/geometry/nodes/node_geo_boolean.cc
index a9158e0ef7a6a476553eda0c090918eeffc3f1bc..34256f231758717a736ea0793b4def84ae3d9ea3 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_boolean.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_boolean.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_bounding_box.cc b/source/blender/nodes/geometry/nodes/node_geo_bounding_box.cc
index 465bd72b57aaad9da8fa83a1abc8585242679d99..558129fb3842beaaa2d6f2374dcae1bee0063882 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_bounding_box.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_bounding_box.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_collection_info.cc b/source/blender/nodes/geometry/nodes/node_geo_collection_info.cc
index 43816b8d8dc235ae2dadebe546fa17dd42af1450..68d42444afd72ad0af3b4779dab8eaca7d309f5f 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_collection_info.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_collection_info.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_math_matrix.h"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_common.cc b/source/blender/nodes/geometry/nodes/node_geo_common.cc
index 093b44506579edb726978d94ca1d55a4b979088e..531d37c3a8988b9d43ce46265df14a63de3c8582 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_common.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_common.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_node.h"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_convex_hull.cc b/source/blender/nodes/geometry/nodes/node_geo_convex_hull.cc
index 11bb8a61df58d159a61d2b12d0677c0350c0c7cf..59147e9b23fdae0f39d879af768a31d4c6aa0a4f 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_convex_hull.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_convex_hull.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_endpoint_selection.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_endpoint_selection.cc
index 666100ffd7fd5554a65f17bada96cdb964e34138..65aad0fcbf10b104d47b54db3bfe6c082df6337f 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_endpoint_selection.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_endpoint_selection.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_fill.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_fill.cc
index 929d9046f982d76523d0857ebb09761561fe593f..9824b2b2ecec58b71f30e9e00ea77b39bfda5e7b 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_fill.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_fill.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 #include "BLI_delaunay_2d.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_fillet.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_fillet.cc
index 81421609dfd88783365bf09b11eac46c210d2b86..94425ab48f48d120f3e05a95dc05d6a9ff7d0cbc 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_fillet.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_fillet.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_handle_type_selection.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_handle_type_selection.cc
index e4e87e519f71336b7102eeccd3ede528aace78c6..26a8ad2d9885e7465d4520874c80ed4f60ecf9c9 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_handle_type_selection.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_handle_type_selection.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_length.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_length.cc
index 21ae88a685232e66eb719a535735dbc688e9f9a4..826211899646ad9ce043379ddb5eda1b80e56249 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_length.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_length.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 #include "node_geometry_util.hh"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_arc.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_arc.cc
index 3f6298168a2f33922dbd1d81215ba920eff2ee66..9919e24473e83aba02f633b7ce36f45a334938c2 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_arc.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_arc.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 #include "BLI_math_base_safe.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_bezier_segment.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_bezier_segment.cc
index 7d84ddf99173e8a913881695b43cb2518520ad46..c6b9018f0db3b759405ac218eb9216d4b9062bcd 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_bezier_segment.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_bezier_segment.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_circle.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_circle.cc
index 7b5d1a1dc805ab4f0450662201631598f776a8f4..44505b61a2744ed51666370a8d66eaa0725a811d 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_circle.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_circle.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_line.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_line.cc
index d35fa0a2fdc06ce1efcd843b30c0be3eccda01bb..d11af3b1cc08f7496001b6124aa365fe61c86a3e 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_line.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_line.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_quadratic_bezier.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_quadratic_bezier.cc
index 885d92a111b98edf01015dafdc5ad6d0b0cfcb9e..456f6e55c1e17ccc764ae56da0639b69717d6b2e 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_quadratic_bezier.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_quadratic_bezier.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 #include "node_geometry_util.hh"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_quadrilateral.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_quadrilateral.cc
index 8ec42cb1c45f00d395941fbd208e53ae5f2a29ab..b6a847eebf4150580120b8aeeea0c46f31fcb85e 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_quadrilateral.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_quadrilateral.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 #include "UI_interface.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_spiral.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_spiral.cc
index 6aba65b56388a17ad2426f36e9ca4a729df36da5..f448ddabd2ba75f5c592d289055b660a4c3a8ea7 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_spiral.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_spiral.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_star.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_star.cc
index 14517a79037dc32c924014dfcaa6deb75c69ddd9..5969af43bc178005ebbe7eb916d86e43f543844b 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_star.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_primitive_star.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_resample.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_resample.cc
index 8494b4868e89a70f32e19a216e498c14b751eb4e..d2afeaa7094758e64986aa0d02c8cf161c6987cf 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_resample.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_resample.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 #include "BLI_task.hh"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_reverse.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_reverse.cc
index 38974fafce749125769bc0251f35d8def1a7d74b..0ef3230937b0efa0848f3d73cadf589df3dfbcd8 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_reverse.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_reverse.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_sample.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_sample.cc
index 56fbc50f0333ce19157d531f93f700e16f74ac10..152828b284c4ee1777efb406865f6fba61f3e502 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_sample.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_sample.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_set_handles.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_set_handles.cc
index 74bdce4cef3faadd918838a6402972fcc712f031..3d7b2fddf726d9709d18a527dbd0edeeb98a24f2 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_set_handles.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_set_handles.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_spline_parameter.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_spline_parameter.cc
index 257a5b8df00065b8f7cf5d1df57c0f3f5f85e679..a303be992427a7df895951901eff5db539ec878b 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_spline_parameter.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_spline_parameter.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_spline_type.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_spline_type.cc
index b91ddd7bc7abaee8348850d049755aeac0c98c91..4e4cabd3c338fb277dd3a6a0062b0b2be2cd7ea1 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_spline_type.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_spline_type.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_subdivide.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_subdivide.cc
index 22549e59ad2eb72c3bdaf8f5a2b37be9b16f0205..9daf3ff05942b85d5ccaba923257142eea2dbf97 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_subdivide.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_subdivide.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 #include "BLI_timeit.hh"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_to_mesh.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_to_mesh.cc
index ef4fc51d1b372e1661105081660376b112949cc7..ed497b6fbe08002e452a2cb9a87f5ea27f2cc9b4 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_to_mesh.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_to_mesh.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_to_points.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_to_points.cc
index c0c1244f031c8c4e8c0fc8472c343d0699933ac4..7481f7248a1ab5fceef704870fa5180369cc1219 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_to_points.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_to_points.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 #include "BLI_task.hh"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_trim.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_trim.cc
index 359863d39e06fcea5f55db49df96738e7f5afea5..abc5b1649c79c52dc623ed1e10b4665da6942e1f 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_trim.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_trim.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 #include "BLI_task.hh"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_delete_geometry.cc b/source/blender/nodes/geometry/nodes/node_geo_delete_geometry.cc
index 8b762abd29b99acbf62874f2af525b075e594b28..2eeb957c123b5c900dd84b2b5171291bcb1147a0 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_delete_geometry.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_delete_geometry.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "UI_interface.h"
 #include "UI_resources.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_distribute_points_on_faces.cc b/source/blender/nodes/geometry/nodes/node_geo_distribute_points_on_faces.cc
index d17657bfa3a4a29c4bf98cb0e2a1a09ace9b535c..51932d341bcffd8c7b3e3bd38cd9ce340eeba161 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_distribute_points_on_faces.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_distribute_points_on_faces.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_kdtree.h"
 #include "BLI_noise.hh"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_dual_mesh.cc b/source/blender/nodes/geometry/nodes/node_geo_dual_mesh.cc
index f6be6c1e7fb92e0b8bcc74973b01d345b8abf791..a526f4f9e65d7bcd4bdd0b8fa79875db5d0ab98b 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_dual_mesh.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_dual_mesh.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_edge_split.cc b/source/blender/nodes/geometry/nodes/node_geo_edge_split.cc
index 9376789cf2cc2adba5f213837e6375e56fef1554..4e053dbc1a3fbc436ef161f758bb5ddc24b831d6 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_edge_split.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_edge_split.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_mesh.h"
 #include "BKE_mesh_runtime.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_extrude_mesh.cc b/source/blender/nodes/geometry/nodes/node_geo_extrude_mesh.cc
index 1d1c5bd22851b61a8ec8d068e8b69c601b8dc7dd..5aeeb72961db783fd8a3ca6563414c0f32da5c93 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_extrude_mesh.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_extrude_mesh.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_disjoint_set.hh"
 #include "BLI_task.hh"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_field_at_index.cc b/source/blender/nodes/geometry/nodes/node_geo_field_at_index.cc
index 9512323834c482ce8c8e75b44e11ad2674a82f92..77be98f169ec72bf5689ecd100a258ff67b7b4e9 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_field_at_index.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_field_at_index.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_flip_faces.cc b/source/blender/nodes/geometry/nodes/node_geo_flip_faces.cc
index 41970d75dfe7f3a1e88e9cdb3d780b911971cc38..34c3169065ceb8d4d7af03d4bf6691601c28c415 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_flip_faces.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_flip_faces.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_mesh.h"
 #include "BKE_mesh_runtime.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_geometry_to_instance.cc b/source/blender/nodes/geometry/nodes/node_geo_geometry_to_instance.cc
index f65af5b6737758a6c5d56760b3f35480ae186b30..1f84f8f288d75fd1dd48e47c68355eee7a914af2 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_geometry_to_instance.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_geometry_to_instance.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_image_texture.cc b/source/blender/nodes/geometry/nodes/node_geo_image_texture.cc
index 624a8b6b0f6c071f53bd7635b1fb194bfb44aaac..a87aef358e116026dea1649ab16fa1eb62bd5b39 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_image_texture.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_image_texture.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_curve_handles.cc b/source/blender/nodes/geometry/nodes/node_geo_input_curve_handles.cc
index b1144b58c3732bda89f324eb8b06b86ede7c6853..6e131dac3defdff81913e63f00ea5d4526fb248f 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_curve_handles.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_curve_handles.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_curve_tilt.cc b/source/blender/nodes/geometry/nodes/node_geo_input_curve_tilt.cc
index 61b4b6bb9e90ddb0046bcb93a6b5aa4a0d63dbed..f9edf2ee071ef0e14aa7e64624625970a1983704 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_curve_tilt.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_curve_tilt.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_id.cc b/source/blender/nodes/geometry/nodes/node_geo_input_id.cc
index afe7546f7e55ed0da487f27256bc5832c3a84676..c21c7c65c8b5f5f954b3ebe79b0a50f89dba3586 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_id.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_id.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_index.cc b/source/blender/nodes/geometry/nodes/node_geo_input_index.cc
index 98c2c9d58f0f48f82c09134f4658b874d7c3f2fd..a1b7287f0bbc694d972f20722e5e036b1962a0d4 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_index.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_index.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_material.cc b/source/blender/nodes/geometry/nodes/node_geo_input_material.cc
index a1c905fccaa3097a2c634cf75374606bfe0e52f1..19882c4966dbb0285383f2603508698a52b355bf 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_material.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_material.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "UI_interface.h"
 #include "UI_resources.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_material_index.cc b/source/blender/nodes/geometry/nodes/node_geo_input_material_index.cc
index fca29feb73c208c5b3db79565b4b7c81ae2000fc..55b8be69eb62dd151a47c087ee2fc0e79c9dc573 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_material_index.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_material_index.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_edge_angle.cc b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_edge_angle.cc
index 4b6ed7b77b7c888e24c9cff38c95c0595656efb5..60640bcb112224f577499476b8fb6047a88e57b9 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_edge_angle.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_edge_angle.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_edge_neighbors.cc b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_edge_neighbors.cc
index 43c867e09776ded2ad2b93ecc2364d5ea50d008e..92172ce7ebdff2b3cc7fdf4804e620b75bc835b2 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_edge_neighbors.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_edge_neighbors.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_edge_vertices.cc b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_edge_vertices.cc
index f54c92fea7be9f6e599edfef1077a1be39584603..213a692d80faaad462a167e6b5f09bec1496a767 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_edge_vertices.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_edge_vertices.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_face_area.cc b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_face_area.cc
index ef8adff48f105ce32e175deb09cbdf6b77dba3f0..6f58d28100af41dd6d665d4f91de28608a7e821d 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_face_area.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_face_area.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_face_neighbors.cc b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_face_neighbors.cc
index 8d196e5f8dd9c7b1c6b97bb6007ee944e720dd49..9968c53f649d9a104a636cd5375d5442ca718358 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_face_neighbors.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_face_neighbors.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_island.cc b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_island.cc
index f1777c9ebf5a31b2fb503846512d2980b53bda86..d39291a2a7e7a481f55ad249f3f4a6a1ff913d02 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_island.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_island.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_vertex_neighbors.cc b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_vertex_neighbors.cc
index c2da065cbfc08c7208ec27f437aa5d7fc8e2e764..b81016eda182e3350663c9fd30f151b7863e6b90 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_mesh_vertex_neighbors.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_mesh_vertex_neighbors.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_normal.cc b/source/blender/nodes/geometry/nodes/node_geo_input_normal.cc
index 120ae0e9bd1e2dbb1614f52b17c6e43936c8cd1d..f6c45c4bca3abded8ffb85760a844031e5b56c8c 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_normal.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_normal.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_position.cc b/source/blender/nodes/geometry/nodes/node_geo_input_position.cc
index beb528d2fd81a57aa9123842ed2a321cd47284c0..62e13670df308bbd3653a6643702de2beaa56ab2 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_position.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_position.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_radius.cc b/source/blender/nodes/geometry/nodes/node_geo_input_radius.cc
index c7777da08c61ffd7be7e6c1b882dcc3de1d2c566..97ca98c631c6ad325e8b4e082aa79b76f8d1ff30 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_radius.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_radius.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_scene_time.cc b/source/blender/nodes/geometry/nodes/node_geo_input_scene_time.cc
index 4ed65e99a1c868722de1591805f07b7d30cab7aa..0222ccbbd02a1f15ea9f8187051dc41d2463ee7e 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_scene_time.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_scene_time.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_scene.h"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_shade_smooth.cc b/source/blender/nodes/geometry/nodes/node_geo_input_shade_smooth.cc
index b27ab097223b94c7220bee6ff375cd5d56b47865..54279719bd4451e7ce5f2c469fc1de2580731210 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_shade_smooth.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_shade_smooth.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_spline_cyclic.cc b/source/blender/nodes/geometry/nodes/node_geo_input_spline_cyclic.cc
index 2db00a1ae683076947a7d730c035cdb76fd9571a..f76e988ffebbf16fb88f8413c70717bcbd68f779 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_spline_cyclic.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_spline_cyclic.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_spline_length.cc b/source/blender/nodes/geometry/nodes/node_geo_input_spline_length.cc
index b8c8ce840eb1c0c3a1f192a1560987aabe6ac078..4537721d1738679acaab994ee4caed4b0d9a954d 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_spline_length.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_spline_length.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_spline_resolution.cc b/source/blender/nodes/geometry/nodes/node_geo_input_spline_resolution.cc
index d79f2ffd64d45da3bd982aa77f9a4e83df96bda3..fb895aaf7dc8b2632c72433dd2a63af527c6b45a 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_spline_resolution.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_spline_resolution.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_tangent.cc b/source/blender/nodes/geometry/nodes/node_geo_input_tangent.cc
index f80fdfbf334f7bbc01977ee5c05af544d200bb5b..9ae99b4d83ece85b97018545041df67c8316999c 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_input_tangent.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_tangent.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_instance_on_points.cc b/source/blender/nodes/geometry/nodes/node_geo_instance_on_points.cc
index 06f24113308a036ad17817c192187c743f35c80c..df6d10991fb494522ba09c9a178160ffb2d83fd8 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_instance_on_points.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_instance_on_points.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_collection_types.h"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_instances_to_points.cc b/source/blender/nodes/geometry/nodes/node_geo_instances_to_points.cc
index f9beed956bb0ea81f4b1d59905b15c5bccb79132..e35f152ce4951962fe645edbad3dc25f896a31ae 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_instances_to_points.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_instances_to_points.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_pointcloud_types.h"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_is_viewport.cc b/source/blender/nodes/geometry/nodes/node_geo_is_viewport.cc
index c97bbad46651d684e3c0df409af09aae92d57153..aa52a6a024680fee12d0fb4795a4a1ff763b0222 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_is_viewport.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_is_viewport.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DEG_depsgraph_query.h"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_join_geometry.cc b/source/blender/nodes/geometry/nodes/node_geo_join_geometry.cc
index 1e521af6b131143363caf5c0191b86896e7e19fe..05cc91b41e39fb337e31be085708f2472ff0d222 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_join_geometry.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_join_geometry.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_material.h"
 #include "BKE_mesh.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_material_replace.cc b/source/blender/nodes/geometry/nodes/node_geo_material_replace.cc
index 0309121db746a4367511c9ca591a0cadf37354fa..cfa1d332f8530fbcc3ebe7edaf4f5cf60744ac35 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_material_replace.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_material_replace.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_material_selection.cc b/source/blender/nodes/geometry/nodes/node_geo_material_selection.cc
index 0b5f0bf34c5d0c53ec49284a681ee7790d8da9e8..c245260f2597749a25aa5ecbd615a649fd3dae55 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_material_selection.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_material_selection.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_merge_by_distance.cc b/source/blender/nodes/geometry/nodes/node_geo_merge_by_distance.cc
index 89227c773cce2101d91d1a6931bcad63927880e9..4b9b2064915fd8807c28fd9229094ee511a6097d 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_merge_by_distance.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_merge_by_distance.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "GEO_mesh_merge_by_distance.hh"
 #include "GEO_point_merge_by_distance.hh"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_circle.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_circle.cc
index b3b11b2e0e96ae4a4fdbb5d1f11a631f8b6a0d9a..9e85547315c0b8426f91c31585c3f808a1ce044c 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_circle.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_circle.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_cone.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_cone.cc
index e092334442125e309aa3509c922261f205a05a47..d84a2e731725bbe789ec1d88715ba6c216a947ac 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_cone.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_cone.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_cube.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_cube.cc
index 5b67258a9475704bcf55332bdcdb545417a1ce9f..e53be5213f638b769470a7403c0b0ae9d0c0485d 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_cube.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_cube.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_cylinder.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_cylinder.cc
index 73f21cf31fac97d051164b2683b61ef40fc23d45..301d46e586ffe46c88b600cba1b70b97bc58b262 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_cylinder.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_cylinder.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_grid.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_grid.cc
index ecb3c785212ad2e1a592cf681411ed5c6b960356..523dbd5dac2eb493508150d746c273ce73243062 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_grid.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_grid.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_ico_sphere.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_ico_sphere.cc
index 28a505c5bb8f25c16c1bd0ed6a1224b5ab4dd25c..aa9a2e9013fa8a80f149cf16c4bd40f33c78511a 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_ico_sphere.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_ico_sphere.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_line.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_line.cc
index 691267bccb8ed16ee9d6b0f996d002afc9dee202..cbad4544860d3436c0227e6b73d5d55832797ff8 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_line.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_line.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_uv_sphere.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_uv_sphere.cc
index 751cf917f6f261917fccfde5182dea51c1c29919..4a09fd8d1d2ce716fb983aba3a6281ed58e7fcec 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_uv_sphere.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_uv_sphere.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_subdivide.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_subdivide.cc
index 6d8a2fac8ad06d2a33c9e4693d5b860de4842696..e1f85be0f8023481049965edf5529fb537e48035 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_mesh_subdivide.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_subdivide.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_mesh.h"
 #include "BKE_subdiv.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_to_curve.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_to_curve.cc
index 0f0fb3c230adfd02178578a5a211c3352030cc43..3284378a2cb12009f48634cd308ba1aacae69938 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_mesh_to_curve.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_to_curve.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "GEO_mesh_to_curve.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_mesh_to_points.cc b/source/blender/nodes/geometry/nodes/node_geo_mesh_to_points.cc
index d0546cd2583df6020e45c527d7ad18040ddc5d6f..6a7aab1cea7ca0dc515bef8c036ac0cb585384b6 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_mesh_to_points.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_mesh_to_points.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_pointcloud_types.h"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_object_info.cc b/source/blender/nodes/geometry/nodes/node_geo_object_info.cc
index d32875d26279c0f0df5ca8268893f7467e722162..f4d91d7496b506ccd0323e14b4553339715a74a9 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_object_info.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_object_info.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_math_matrix.h"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_points_to_vertices.cc b/source/blender/nodes/geometry/nodes/node_geo_points_to_vertices.cc
index f3da591f684635d45745ca841697bc1237b7629f..0f6586617bc6876f656066c8bb6c66bab746ead1 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_points_to_vertices.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_points_to_vertices.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_points_to_volume.cc b/source/blender/nodes/geometry/nodes/node_geo_points_to_volume.cc
index c165bcf8e3549011b2190b78d2c23a2eb7afbb99..1731ba64b97a2e48638d19de93b9a5c1f4ca2c0f 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_points_to_volume.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_points_to_volume.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifdef WITH_OPENVDB
 #  include <openvdb/openvdb.h>
diff --git a/source/blender/nodes/geometry/nodes/node_geo_proximity.cc b/source/blender/nodes/geometry/nodes/node_geo_proximity.cc
index 3f509942f7c175fd4f4e2782d8ee3c8f692d5a57..d5233ee35a40e4ce1746d907a5618503307bc19e 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_proximity.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_proximity.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 #include "BLI_timeit.hh"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_raycast.cc b/source/blender/nodes/geometry/nodes/node_geo_raycast.cc
index c38503f688cb593834ee3cd1e3adb52d256f93eb..1797364ad725e073c567f8a9ac325d1fb57c3a24 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_raycast.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_raycast.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_realize_instances.cc b/source/blender/nodes/geometry/nodes/node_geo_realize_instances.cc
index 48b88705ed270105686837f99c96cca5f3b1c7f8..164ffe0e71338fe92587b5acd33579ab0ab78c52 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_realize_instances.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_realize_instances.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_rotate_instances.cc b/source/blender/nodes/geometry/nodes/node_geo_rotate_instances.cc
index 7d5c5b77ffdd906c3b9eb254f4d67f108078fa21..6eb95859e5046ba50603c24a9d7b4e88d326061f 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_rotate_instances.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_rotate_instances.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_scale_elements.cc b/source/blender/nodes/geometry/nodes/node_geo_scale_elements.cc
index aaa2c1564420e1ede6453d0c66e1de0fe8c588ac..f9d9ed75f307ddc0f5cddaef9f3769b969e7f162 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_scale_elements.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_scale_elements.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_array.hh"
 #include "BLI_disjoint_set.hh"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_scale_instances.cc b/source/blender/nodes/geometry/nodes/node_geo_scale_instances.cc
index 5bd2028ff415eec20c3aefec2a41aed3a16a5606..4ca21874f8f4c96baaecea93b2aa8615347d6114 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_scale_instances.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_scale_instances.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_separate_components.cc b/source/blender/nodes/geometry/nodes/node_geo_separate_components.cc
index 3e34378d3e078550308eb7f1f3e453cc6d3200b7..b29ebd0d4d43f387a5d47e0218ab7ebdfff484dd 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_separate_components.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_separate_components.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_separate_geometry.cc b/source/blender/nodes/geometry/nodes/node_geo_separate_geometry.cc
index fec1ac1363e419c35862e38d24eebe2313105ee9..a48d422e4c0a2bff349e3e102f067e7565e6166b 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_separate_geometry.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_separate_geometry.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "UI_interface.h"
 #include "UI_resources.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_set_curve_handles.cc b/source/blender/nodes/geometry/nodes/node_geo_set_curve_handles.cc
index 82d09bbc208fa79ccb4796d2f1707baae5c67057..fb648baad088ad63b4a77ce7eb73853551616578 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_set_curve_handles.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_set_curve_handles.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_set_curve_radius.cc b/source/blender/nodes/geometry/nodes/node_geo_set_curve_radius.cc
index 06fe4427520a212a354b23cf5868ba698a268c71..2f59d008df003cd4b7de868923b015855bccfcf1 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_set_curve_radius.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_set_curve_radius.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_set_curve_tilt.cc b/source/blender/nodes/geometry/nodes/node_geo_set_curve_tilt.cc
index 0854d0a4549a3a4f401d25934efd23894b2b2091..b94782b8c4cd278f8af9e752759836e4451aa867 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_set_curve_tilt.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_set_curve_tilt.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_set_id.cc b/source/blender/nodes/geometry/nodes/node_geo_set_id.cc
index 110b8206944f93d60f202704560ded5d9452f578..543e57d38ad1c89b4500292b0607050062557c7b 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_set_id.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_set_id.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_set_material.cc b/source/blender/nodes/geometry/nodes/node_geo_set_material.cc
index ab2c778d6fc666987b32fd5eace2b2f4a7de4139..c48129acbdcc5916a17b249bcc1f89eede23fa9f 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_set_material.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_set_material.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_set_material_index.cc b/source/blender/nodes/geometry/nodes/node_geo_set_material_index.cc
index ca6d78adc80a4d1b3d08e0151dbca78fe4fa8a92..a0b38209f970e3947c426a6f65f4d43f80c28771 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_set_material_index.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_set_material_index.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_set_point_radius.cc b/source/blender/nodes/geometry/nodes/node_geo_set_point_radius.cc
index b7dd091da44035300e4274705a7b288b87874e1d..93024fd81d6f887e584d33f1c78346a370374eef 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_set_point_radius.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_set_point_radius.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_set_position.cc b/source/blender/nodes/geometry/nodes/node_geo_set_position.cc
index 4a8e4e6eab8327a2301a2f4bc32c77a4cf3f7b3a..361a75ee0a8b67704d261a8c570d8bcee51929a0 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_set_position.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_set_position.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DEG_depsgraph_query.h"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_set_shade_smooth.cc b/source/blender/nodes/geometry/nodes/node_geo_set_shade_smooth.cc
index d442cd37e81f52f68c9826ee02cb7fa6a391f2d2..3420e17cc1006ffd8ef1ba26441baeaf627bd34e 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_set_shade_smooth.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_set_shade_smooth.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_set_spline_cyclic.cc b/source/blender/nodes/geometry/nodes/node_geo_set_spline_cyclic.cc
index 13230e185a3a68c05b38f544ed7e16aa2c6ff426..70e363064cdfb23b081937c4c976e4510b996f7d 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_set_spline_cyclic.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_set_spline_cyclic.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_set_spline_resolution.cc b/source/blender/nodes/geometry/nodes/node_geo_set_spline_resolution.cc
index e472e14671ca536ae6f8f203e23697b5fa5d6f1b..e4702035eecb1d8103f4a65f3a03ebcd98500114 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_set_spline_resolution.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_set_spline_resolution.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_spline.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_string_join.cc b/source/blender/nodes/geometry/nodes/node_geo_string_join.cc
index 176fcf3178a6e71df1628878238061b4734e1ce4..bb33430a02fc1436debc5381c48866f636239b61 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_string_join.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_string_join.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_string_to_curves.cc b/source/blender/nodes/geometry/nodes/node_geo_string_to_curves.cc
index c4bd6c6157f032c70a8e39d2e32c7d49f77aca5b..ddc0bb2bc11e939bf20135b1a289c258a0cd239b 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_string_to_curves.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_string_to_curves.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_curve_types.h"
 #include "DNA_vfont_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_subdivision_surface.cc b/source/blender/nodes/geometry/nodes/node_geo_subdivision_surface.cc
index eb1a54968455dae34f6fb6afb491b8f51de32dc0..a5fe491e12bf94de4885f9eee4edfc180342a3e0 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_subdivision_surface.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_subdivision_surface.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_switch.cc b/source/blender/nodes/geometry/nodes/node_geo_switch.cc
index a2f05677310680dcdec524234ea018c9c1ec4de2..6e27b3464071e23cb79445f77a37eb2dcc75225c 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_switch.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_switch.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "node_geometry_util.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_transfer_attribute.cc b/source/blender/nodes/geometry/nodes/node_geo_transfer_attribute.cc
index e6b14bc69e511ad1ee05f1d9810ee9be2ef3563c..789478873f6d495f6c69ae4f24dac5551a14b1a0 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_transfer_attribute.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_transfer_attribute.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_kdopbvh.h"
 #include "BLI_task.hh"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_transform.cc b/source/blender/nodes/geometry/nodes/node_geo_transform.cc
index 6187a2eacf989b0aa684806f3d51557c290b534f..5950a2a16d21244176b326403320e90b596dc18e 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_transform.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_transform.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifdef WITH_OPENVDB
 #  include <openvdb/openvdb.h>
diff --git a/source/blender/nodes/geometry/nodes/node_geo_translate_instances.cc b/source/blender/nodes/geometry/nodes/node_geo_translate_instances.cc
index 91c503ff047006df464102a3e7c93b5608c20465..a5ca1cba28fec1b0bbfba6e75e6391f50cd4aba3 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_translate_instances.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_translate_instances.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_task.hh"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_triangulate.cc b/source/blender/nodes/geometry/nodes/node_geo_triangulate.cc
index ab1afeb39f47a1d2756f14288d32581f342a1be2..5ded8413cf9074495e8147b58b4a4f80345db8ed 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_triangulate.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_triangulate.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_customdata.h"
 #include "BKE_mesh.h"
diff --git a/source/blender/nodes/geometry/nodes/node_geo_viewer.cc b/source/blender/nodes/geometry/nodes/node_geo_viewer.cc
index c717d90f7cc157e46d6459d2677c4010cf6bf34a..8e9d7b0e46dfabb5cd0e1f361968f939b023cf33 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_viewer.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_viewer.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BKE_context.h"
 
diff --git a/source/blender/nodes/geometry/nodes/node_geo_volume_to_mesh.cc b/source/blender/nodes/geometry/nodes/node_geo_volume_to_mesh.cc
index c7dc73f8a9176ec5c8065feaf5df4eaf6ddaac45..c30c05bdd0d8320fe6bce92c28e4a476f38b2fc1 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_volume_to_mesh.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_volume_to_mesh.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DEG_depsgraph_query.h"
 #ifdef WITH_OPENVDB
diff --git a/source/blender/nodes/intern/derived_node_tree.cc b/source/blender/nodes/intern/derived_node_tree.cc
index 449c659830741cf36a3bd191b183702719657b02..e589da09b1642d3903a1e285f4531ffe4b51850f 100644
--- a/source/blender/nodes/intern/derived_node_tree.cc
+++ b/source/blender/nodes/intern/derived_node_tree.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "NOD_derived_node_tree.hh"
 
diff --git a/source/blender/nodes/intern/geometry_nodes_eval_log.cc b/source/blender/nodes/intern/geometry_nodes_eval_log.cc
index e33f6cf345dcae3491ac6da4cc652b1e4b1d21c6..5b1b0a216143675b55c6524230910201b9919e5f 100644
--- a/source/blender/nodes/intern/geometry_nodes_eval_log.cc
+++ b/source/blender/nodes/intern/geometry_nodes_eval_log.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "NOD_geometry_nodes_eval_log.hh"
 
diff --git a/source/blender/nodes/intern/math_functions.cc b/source/blender/nodes/intern/math_functions.cc
index 00f4f2a3405d259dd952bafa9da135754bc3a9c2..dec8ff876222a10633b3260bb274f755f1e65a46 100644
--- a/source/blender/nodes/intern/math_functions.cc
+++ b/source/blender/nodes/intern/math_functions.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "NOD_math_functions.hh"
 
diff --git a/source/blender/nodes/intern/node_common.cc b/source/blender/nodes/intern/node_common.cc
index 21dec8489b49a6dc2afe57be84d4623dd35a5a85..d6a4af7ef39c7ced5b5822b1bb731879979a8035 100644
--- a/source/blender/nodes/intern/node_common.cc
+++ b/source/blender/nodes/intern/node_common.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/intern/node_common.h b/source/blender/nodes/intern/node_common.h
index 0d1b51224e6c926d9884271de77e910234c6c1ae..5ddf0800d8c99aa4e97ba940c45b9b6cb29e857a 100644
--- a/source/blender/nodes/intern/node_common.h
+++ b/source/blender/nodes/intern/node_common.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/intern/node_declaration.cc b/source/blender/nodes/intern/node_declaration.cc
index 28e8bf5a4b7189af9644a6ad2c71a8e1137ed1a8..2cd9c6000c07d80301e3fb4764cebe6189a4f783 100644
--- a/source/blender/nodes/intern/node_declaration.cc
+++ b/source/blender/nodes/intern/node_declaration.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "NOD_node_declaration.hh"
 
diff --git a/source/blender/nodes/intern/node_exec.cc b/source/blender/nodes/intern/node_exec.cc
index 788d938ca6fbf03679137f04c8c2a9be47b8ae54..724d6f1a1e11807d039733cf698ec13825ad47d5 100644
--- a/source/blender/nodes/intern/node_exec.cc
+++ b/source/blender/nodes/intern/node_exec.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/intern/node_exec.h b/source/blender/nodes/intern/node_exec.h
index 115389afd6717f9ed5ce35dfe5cd6cbc22691861..dc07f52e23fcee64e6833d847258c1d5b2dca319 100644
--- a/source/blender/nodes/intern/node_exec.h
+++ b/source/blender/nodes/intern/node_exec.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/intern/node_geometry_exec.cc b/source/blender/nodes/intern/node_geometry_exec.cc
index b5c4e71df74506c763e32b376ed34260c2ceda17..d63a6d11edaba37d09e4af6a0bf0f60ead520e39 100644
--- a/source/blender/nodes/intern/node_geometry_exec.cc
+++ b/source/blender/nodes/intern/node_geometry_exec.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "DNA_modifier_types.h"
 
diff --git a/source/blender/nodes/intern/node_multi_function.cc b/source/blender/nodes/intern/node_multi_function.cc
index 6d79ed839b2ee0c6b6252f697ec44b95d188c668..13bfdfbfac1be8203d5446e05f58b10f0c975f86 100644
--- a/source/blender/nodes/intern/node_multi_function.cc
+++ b/source/blender/nodes/intern/node_multi_function.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "NOD_multi_function.hh"
 
diff --git a/source/blender/nodes/intern/node_socket.cc b/source/blender/nodes/intern/node_socket.cc
index ed72580ccf1fc753b8bf5ba378d903f518541f6f..948c8376460e5014c3b4767f8f92496d48a6690e 100644
--- a/source/blender/nodes/intern/node_socket.cc
+++ b/source/blender/nodes/intern/node_socket.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/intern/node_socket_declarations.cc b/source/blender/nodes/intern/node_socket_declarations.cc
index 1e6b77a96209296d5ff2f34bac66144c72bbe98f..06925761bc7edc5c5025d07c85f779ea8dd22102 100644
--- a/source/blender/nodes/intern/node_socket_declarations.cc
+++ b/source/blender/nodes/intern/node_socket_declarations.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "NOD_socket_declarations.hh"
 #include "NOD_socket_declarations_geometry.hh"
diff --git a/source/blender/nodes/intern/node_tree_ref.cc b/source/blender/nodes/intern/node_tree_ref.cc
index bc78533d45c70ccd6a2c836f4cc4ec2cc84cf7ef..8659b8391904740536c93d18759145fb043a0051 100644
--- a/source/blender/nodes/intern/node_tree_ref.cc
+++ b/source/blender/nodes/intern/node_tree_ref.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <mutex>
 
diff --git a/source/blender/nodes/intern/node_util.c b/source/blender/nodes/intern/node_util.c
index 5c2d84cf605900aec485164a84d1cf40e7236ae5..10ff27652c3b48f8f315763a3710b2f18689e15c 100644
--- a/source/blender/nodes/intern/node_util.c
+++ b/source/blender/nodes/intern/node_util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/intern/node_util.h b/source/blender/nodes/intern/node_util.h
index d7da2303088eb7acf0579aafa8160e7bf39be09c..de03a176c0cf11a0d150da084e25fa4995890af2 100644
--- a/source/blender/nodes/intern/node_util.h
+++ b/source/blender/nodes/intern/node_util.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/intern/socket_search_link.cc b/source/blender/nodes/intern/socket_search_link.cc
index 8543efe7f9bebc2e77ae0bb5917c0e73351f58d6..3f9a9ecbacff363354d8e1f2ce4175eca68bbe40 100644
--- a/source/blender/nodes/intern/socket_search_link.cc
+++ b/source/blender/nodes/intern/socket_search_link.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "BLI_set.hh"
 
diff --git a/source/blender/nodes/shader/CMakeLists.txt b/source/blender/nodes/shader/CMakeLists.txt
index 598b0c81b5184a5ac2e9e313e84a00a4a4fe8104..a9e21e07a312f4485dc44ea63e914a19d5b2f12c 100644
--- a/source/blender/nodes/shader/CMakeLists.txt
+++ b/source/blender/nodes/shader/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2021, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2021 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/nodes/shader/node_shader_tree.cc b/source/blender/nodes/shader/node_shader_tree.cc
index 5c3c5889c98b7d428d60ad333e9eae8bc85885b4..9d56de45ba35058f2daf327a7f7ecbdbb29e9422 100644
--- a/source/blender/nodes/shader/node_shader_tree.cc
+++ b/source/blender/nodes/shader/node_shader_tree.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/shader/node_shader_util.cc b/source/blender/nodes/shader/node_shader_util.cc
index bb377e2607a66782415e04d181f33f7a00ea0e49..16a4c5bae88783cfcec3345c135c4e83a27b7675 100644
--- a/source/blender/nodes/shader/node_shader_util.cc
+++ b/source/blender/nodes/shader/node_shader_util.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/shader/node_shader_util.hh b/source/blender/nodes/shader/node_shader_util.hh
index 31229c8693b4a066e7a734cbe3c02bf6ac46bcc1..df63f8d8b6233c5cf091d254c40f4fe1b0c96944 100644
--- a/source/blender/nodes/shader/node_shader_util.hh
+++ b/source/blender/nodes/shader/node_shader_util.hh
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_add_shader.cc b/source/blender/nodes/shader/nodes/node_shader_add_shader.cc
index 73d5c12ce966e72822333d81fbecc589f2a959b8..330bdc0ba612ab43093286192d106a39d83b3604 100644
--- a/source/blender/nodes/shader/nodes/node_shader_add_shader.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_add_shader.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_ambient_occlusion.cc b/source/blender/nodes/shader/nodes/node_shader_ambient_occlusion.cc
index 9c64594aab8862cff3facb3527c8d664d6c7e110..8a3b0258b55db3f0ec334e126e7d7529e95359ca 100644
--- a/source/blender/nodes/shader/nodes/node_shader_ambient_occlusion.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_ambient_occlusion.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_attribute.cc b/source/blender/nodes/shader/nodes/node_shader_attribute.cc
index cf1b49ba29c7c85b8b93513a2b38da1e0fde5607..bb01818e73480797ff3ffe08a87cf7c5cae16e5f 100644
--- a/source/blender/nodes/shader/nodes/node_shader_attribute.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_attribute.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_background.cc b/source/blender/nodes/shader/nodes/node_shader_background.cc
index 3b9e71cf84278244f57569e5fd4c059fcb4eccca..f5d3b6811f1188fdf096a554bdd6b578e13da455 100644
--- a/source/blender/nodes/shader/nodes/node_shader_background.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_background.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bevel.cc b/source/blender/nodes/shader/nodes/node_shader_bevel.cc
index c4fa61753f59507d0cfdec34b125bd712c5f064c..8bce38baf73b5691b666bc223bbf13bf8d271a50 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bevel.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bevel.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_blackbody.cc b/source/blender/nodes/shader/nodes/node_shader_blackbody.cc
index 85e2ed08403f299320a17ac33e9f190f9ce25154..62e631efb576ffee9eb2b261e8361679ae40bea4 100644
--- a/source/blender/nodes/shader/nodes/node_shader_blackbody.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_blackbody.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_brightness.cc b/source/blender/nodes/shader/nodes/node_shader_brightness.cc
index 66bfaba2785deebc90d022a19d3e503c7c58f075..a23783c6d4643936d93b7323555479a2539f9703 100644
--- a/source/blender/nodes/shader/nodes/node_shader_brightness.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_brightness.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bsdf_anisotropic.cc b/source/blender/nodes/shader/nodes/node_shader_bsdf_anisotropic.cc
index 3f0749ab2afcf9689ae5a51200af0a09f51f1126..13b4a034a512aba13b8917f89215a8cc2940d356 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bsdf_anisotropic.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bsdf_anisotropic.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bsdf_diffuse.cc b/source/blender/nodes/shader/nodes/node_shader_bsdf_diffuse.cc
index 5848ca76cdd2162b46c3556e7648d9f70abecad2..3f025b2ba3917f0c029948cda32a8efc6e7c921b 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bsdf_diffuse.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bsdf_diffuse.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bsdf_glass.cc b/source/blender/nodes/shader/nodes/node_shader_bsdf_glass.cc
index 47d4b87198b34429c2042b643dbf691a35e49d22..a1e5b70543802bbb798e404b34440dca9e99149c 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bsdf_glass.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bsdf_glass.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bsdf_glossy.cc b/source/blender/nodes/shader/nodes/node_shader_bsdf_glossy.cc
index 03a3e634f56bb38cd87b7db17123da7ff6c09bd1..9f0e172a5fe1743f9345dad12733b8392254ce16 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bsdf_glossy.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bsdf_glossy.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bsdf_hair.cc b/source/blender/nodes/shader/nodes/node_shader_bsdf_hair.cc
index 3be2bd22f60f14beabd575986828ddb49aa7724e..ef87f380bb91b6e2c856a29adbe0c732dbf02a9f 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bsdf_hair.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bsdf_hair.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bsdf_hair_principled.cc b/source/blender/nodes/shader/nodes/node_shader_bsdf_hair_principled.cc
index 7062888b5fbbadd3d08555ef3d996e46efb0e5f7..edae03bbd3166e486d5d9bda20acf7748bfe6259 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bsdf_hair_principled.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bsdf_hair_principled.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bsdf_principled.cc b/source/blender/nodes/shader/nodes/node_shader_bsdf_principled.cc
index 4c378d9bc09f758a7f7c719633beebdbec0115dc..6c2f38fc723e0fc61d1dc510fecd209892d3fd50 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bsdf_principled.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bsdf_principled.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bsdf_refraction.cc b/source/blender/nodes/shader/nodes/node_shader_bsdf_refraction.cc
index 0d588c82869c3ac9b8213a2e06a7e83e3167756a..73f58477b67a0f3ef77aeb92ec999b9ecf714e95 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bsdf_refraction.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bsdf_refraction.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bsdf_toon.cc b/source/blender/nodes/shader/nodes/node_shader_bsdf_toon.cc
index 5093b89676413dcb2caabfaaf1c4f76df44ad142..9cb7c4c3bbb3b285220b842cacdc08c0e727345c 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bsdf_toon.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bsdf_toon.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bsdf_translucent.cc b/source/blender/nodes/shader/nodes/node_shader_bsdf_translucent.cc
index 22891738299db52db190fa5a5ebfec9729738387..19e61d8140dc612dfb1ba3f7a94fa944cd833cf2 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bsdf_translucent.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bsdf_translucent.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bsdf_transparent.cc b/source/blender/nodes/shader/nodes/node_shader_bsdf_transparent.cc
index d764f4dd76b61e8c3bd3a2727553b07599444ce5..57fd7e3ef3bd05d0df9fa7a54006d772fcce5937 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bsdf_transparent.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bsdf_transparent.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bsdf_velvet.cc b/source/blender/nodes/shader/nodes/node_shader_bsdf_velvet.cc
index dd090236c08089140a4500d309ad457a61d1dbdc..75bdb5b6f545f9e7e1a910d64dc5849f1796afaf 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bsdf_velvet.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bsdf_velvet.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_bump.cc b/source/blender/nodes/shader/nodes/node_shader_bump.cc
index 690eacf30ffc0ada6529adb608c6d3a29e4669d8..5dd27e64ce39d718dcf6d80eaee9531a2fdc0ad4 100644
--- a/source/blender/nodes/shader/nodes/node_shader_bump.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_bump.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_camera.cc b/source/blender/nodes/shader/nodes/node_shader_camera.cc
index b9c624faed92c1d6af3ffd2b757bb29d5d7b704f..9d2858f56f746f7cb45d12d70429f5b48b087590 100644
--- a/source/blender/nodes/shader/nodes/node_shader_camera.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_camera.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_clamp.cc b/source/blender/nodes/shader/nodes/node_shader_clamp.cc
index cd0f1b3c44d8f490acd3386cba4c1e117f725694..9b1d2ee1d6353a4702c8de3096e0f91be3a3f3be 100644
--- a/source/blender/nodes/shader/nodes/node_shader_clamp.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_clamp.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_color_ramp.cc b/source/blender/nodes/shader/nodes/node_shader_color_ramp.cc
index d8c43e1d66b03f8d96ad6f2fc46d28f56854a3fe..0c8cc209d5af37d484deea6abbd9175eebede54d 100644
--- a/source/blender/nodes/shader/nodes/node_shader_color_ramp.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_color_ramp.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_common.cc b/source/blender/nodes/shader/nodes/node_shader_common.cc
index f7a17f0722c1e8066f9c31e852e5fad40a0f37d4..20d0d11ba861c1ef10ebd3d27f8ec529b2a52168 100644
--- a/source/blender/nodes/shader/nodes/node_shader_common.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_common.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_curves.cc b/source/blender/nodes/shader/nodes/node_shader_curves.cc
index 6570ffcac8369ed372ab9760cd929969b3b07a60..64a5cd97250bbb74f41e0056d77fffe5fc5dc41f 100644
--- a/source/blender/nodes/shader/nodes/node_shader_curves.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_curves.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_displacement.cc b/source/blender/nodes/shader/nodes/node_shader_displacement.cc
index c56218e795a59eef850a6a4852b7996ab7b38821..88d1fac13a4085843d9db2a209ff7a3e190fcd42 100644
--- a/source/blender/nodes/shader/nodes/node_shader_displacement.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_displacement.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_eevee_specular.cc b/source/blender/nodes/shader/nodes/node_shader_eevee_specular.cc
index e4c80725c8ec9eb3c54b7095fd9619d3ec0d8639..c4aed523f61b4bdd842fb2b219310067efb42938 100644
--- a/source/blender/nodes/shader/nodes/node_shader_eevee_specular.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_eevee_specular.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_emission.cc b/source/blender/nodes/shader/nodes/node_shader_emission.cc
index ea36763578f2e83467ae12487a9e3894086ae265..d4d88857cd2d9fe6b81dbb217812329ac992aae7 100644
--- a/source/blender/nodes/shader/nodes/node_shader_emission.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_emission.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_fresnel.cc b/source/blender/nodes/shader/nodes/node_shader_fresnel.cc
index 5dba42fcc30ee2653081577fb8c9cc285826f85f..47b2c6b97d4e92bc4c22177e787470d8c3266740 100644
--- a/source/blender/nodes/shader/nodes/node_shader_fresnel.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_fresnel.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_gamma.cc b/source/blender/nodes/shader/nodes/node_shader_gamma.cc
index 98a287b08da7c349967a2dc6bd92cea7aebc1d3b..d1e07c8b363c31b2a20672142812157c80b0ed34 100644
--- a/source/blender/nodes/shader/nodes/node_shader_gamma.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_gamma.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_geometry.cc b/source/blender/nodes/shader/nodes/node_shader_geometry.cc
index 2a5868333a99b101291d16da3da7aee8770159ff..5bd984ddfc48277ee06b9cfeff40f9419c7aae4c 100644
--- a/source/blender/nodes/shader/nodes/node_shader_geometry.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_geometry.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_hair_info.cc b/source/blender/nodes/shader/nodes/node_shader_hair_info.cc
index 12c29c40b1dfc3a685a446612a0d66554470349b..49910bd5c66b463c8d05d95eef4c90dc89abb1a8 100644
--- a/source/blender/nodes/shader/nodes/node_shader_hair_info.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_hair_info.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_holdout.cc b/source/blender/nodes/shader/nodes/node_shader_holdout.cc
index 4f6f8a639de7b8d92cb439c678de7b948cb7c161..b1a9ce75e1fb7bdb7043d4c245363d13b5bfbbf2 100644
--- a/source/blender/nodes/shader/nodes/node_shader_holdout.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_holdout.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_hueSatVal.cc b/source/blender/nodes/shader/nodes/node_shader_hueSatVal.cc
index 94b9a61c602c40e24808991c45d32f31d0bcc2cb..a2220ebccc72329d3f1aa18501231962447079b2 100644
--- a/source/blender/nodes/shader/nodes/node_shader_hueSatVal.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_hueSatVal.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_ies_light.cc b/source/blender/nodes/shader/nodes/node_shader_ies_light.cc
index 82f0a3045c9f7a42e7c87ba00be9e9683b3ec6e3..bc1d662a17a2e140272d4ca84b830bbb0d5a229d 100644
--- a/source/blender/nodes/shader/nodes/node_shader_ies_light.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_ies_light.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_invert.cc b/source/blender/nodes/shader/nodes/node_shader_invert.cc
index 3b5f4cb1d38c23c731bf2b2c15d9e0f1613e2e47..f87455b555dafde688f6b847f428a4a32579fcb5 100644
--- a/source/blender/nodes/shader/nodes/node_shader_invert.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_invert.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_layer_weight.cc b/source/blender/nodes/shader/nodes/node_shader_layer_weight.cc
index b4210ce154c58ffa4ea5a94443b607fcea513a88..b5097e7165712a231ecfa9149441639a2d63b049 100644
--- a/source/blender/nodes/shader/nodes/node_shader_layer_weight.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_layer_weight.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_light_falloff.cc b/source/blender/nodes/shader/nodes/node_shader_light_falloff.cc
index 50eea2b36434d02a99f23a6c033fdf4df5375dd7..599becb44009c25b15ee2b37a970376edab53dd9 100644
--- a/source/blender/nodes/shader/nodes/node_shader_light_falloff.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_light_falloff.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_light_path.cc b/source/blender/nodes/shader/nodes/node_shader_light_path.cc
index 6fbd575188628d8ceda788a74ed335b9a37c91f1..1e4ecbd77b19a35c6445966ec0e9f4bfe45ec56c 100644
--- a/source/blender/nodes/shader/nodes/node_shader_light_path.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_light_path.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_map_range.cc b/source/blender/nodes/shader/nodes/node_shader_map_range.cc
index 254ab9f866db767c1bb843477b45d2e8d95c9c8c..f922499b910b922ede5ac4a1808107a4d5d3293a 100644
--- a/source/blender/nodes/shader/nodes/node_shader_map_range.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_map_range.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_mapping.cc b/source/blender/nodes/shader/nodes/node_shader_mapping.cc
index 19c3a26796e0cecff2ccc115708a479867ab31cb..7824ee4861c4be4bfe9248b6c27520bac6987044 100644
--- a/source/blender/nodes/shader/nodes/node_shader_mapping.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_mapping.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_math.cc b/source/blender/nodes/shader/nodes/node_shader_math.cc
index 50585405cbf69a3b691416e1ebf658047976c2da..83d0ff8177bdbdd6ebcb1a94181f79c72b0b7790 100644
--- a/source/blender/nodes/shader/nodes/node_shader_math.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_math.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_mix_rgb.cc b/source/blender/nodes/shader/nodes/node_shader_mix_rgb.cc
index 9678e86d2897c8f401a0dde708e5d0ad17934003..fc6ce6a11f7546d7dc6e3032522752d6724adbaa 100644
--- a/source/blender/nodes/shader/nodes/node_shader_mix_rgb.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_mix_rgb.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_mix_shader.cc b/source/blender/nodes/shader/nodes/node_shader_mix_shader.cc
index d9aa906e4518c930bb50a132bce9e48909099bf4..7740bf9b92a4352abbb5e1295192cae7a42b78df 100644
--- a/source/blender/nodes/shader/nodes/node_shader_mix_shader.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_mix_shader.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_normal.cc b/source/blender/nodes/shader/nodes/node_shader_normal.cc
index e677f36e4258ac950acc7eeef391177ab49a2be4..f6214dd9c89124d198596ab2af326f726ca54029 100644
--- a/source/blender/nodes/shader/nodes/node_shader_normal.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_normal.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_normal_map.cc b/source/blender/nodes/shader/nodes/node_shader_normal_map.cc
index 338b4c62a3a09874459f23548d77769fb2b3f966..f8a5e342ae3a611b8ed2ac1a1c8e9e7ea7497a71 100644
--- a/source/blender/nodes/shader/nodes/node_shader_normal_map.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_normal_map.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_object_info.cc b/source/blender/nodes/shader/nodes/node_shader_object_info.cc
index 7bc7039d11e428b0bb77ca3db53f530c4f9add47..6ed5a7b715d211dfd2e6ddbfc0664156707d0483 100644
--- a/source/blender/nodes/shader/nodes/node_shader_object_info.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_object_info.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_output_aov.cc b/source/blender/nodes/shader/nodes/node_shader_output_aov.cc
index 6ffd763b0d1ca5b0850f1c49a7b78ea2bb0faff0..c0a116675ab90edeefbf5b4fb6ab5a84d1b39d71 100644
--- a/source/blender/nodes/shader/nodes/node_shader_output_aov.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_output_aov.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_output_light.cc b/source/blender/nodes/shader/nodes/node_shader_output_light.cc
index 0c8288f801b52d6f9801cebd5b56f4e57e943434..0eb8a60fdaa0b7f3a18c6827d8ae1b17bbfc0447 100644
--- a/source/blender/nodes/shader/nodes/node_shader_output_light.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_output_light.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_output_linestyle.cc b/source/blender/nodes/shader/nodes/node_shader_output_linestyle.cc
index 9b6c3292e752e4089c96dc87657d282c554b927b..b387aebf5e320b4659ef143409b1c8bc48ed998e 100644
--- a/source/blender/nodes/shader/nodes/node_shader_output_linestyle.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_output_linestyle.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_output_material.cc b/source/blender/nodes/shader/nodes/node_shader_output_material.cc
index 5fc95b92e3f1bfe93bd659b0562c56b7cb07d9a8..3329ab7f8a00ffc17799a0d7e75617c6909d7126 100644
--- a/source/blender/nodes/shader/nodes/node_shader_output_material.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_output_material.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_output_world.cc b/source/blender/nodes/shader/nodes/node_shader_output_world.cc
index 501dc088cbe6c1ff1c39a49a9e550bac3c7713be..77146876d9d4fba6dae1e28319f7c4c37a834f19 100644
--- a/source/blender/nodes/shader/nodes/node_shader_output_world.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_output_world.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_particle_info.cc b/source/blender/nodes/shader/nodes/node_shader_particle_info.cc
index d68d0fe0d72e813ff831fd7ac99a30e3dae8dc9a..66e859a8c69fce48f092958c50a5257d35dea77e 100644
--- a/source/blender/nodes/shader/nodes/node_shader_particle_info.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_particle_info.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_point_info.cc b/source/blender/nodes/shader/nodes/node_shader_point_info.cc
index adc58ca065af8c576fc3a6f1a2dbb632d5646ad5..1cddf2acc8af7b1685b0b8abc8920b90cb24d8d0 100644
--- a/source/blender/nodes/shader/nodes/node_shader_point_info.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_point_info.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_rgb.cc b/source/blender/nodes/shader/nodes/node_shader_rgb.cc
index f3b83b72232e02136cdf28a21093110a312fd161..38acfab322f7498cd870b19617160978f69dd60f 100644
--- a/source/blender/nodes/shader/nodes/node_shader_rgb.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_rgb.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_rgb_to_bw.cc b/source/blender/nodes/shader/nodes/node_shader_rgb_to_bw.cc
index 13ba056d9eebac62833ca5910b84f60033888632..7d738cdd719370339ebcb08e223c4c6b92b5024b 100644
--- a/source/blender/nodes/shader/nodes/node_shader_rgb_to_bw.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_rgb_to_bw.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_script.cc b/source/blender/nodes/shader/nodes/node_shader_script.cc
index e6af90fa588cfe94a61b591db2934f885615a9c1..4d3d2af6aa69c37810ed106f3f194ba3a43fe804 100644
--- a/source/blender/nodes/shader/nodes/node_shader_script.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_script.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_sepcomb_hsv.cc b/source/blender/nodes/shader/nodes/node_shader_sepcomb_hsv.cc
index 700e4ce366771e9f37eb4fd9c54eb93250e52d35..129c8cf4b975338959c3d1e6fc9882c50948c8db 100644
--- a/source/blender/nodes/shader/nodes/node_shader_sepcomb_hsv.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_sepcomb_hsv.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_sepcomb_rgb.cc b/source/blender/nodes/shader/nodes/node_shader_sepcomb_rgb.cc
index d4be0bd14dc0a2a43a05e4321c9e6f0d8b3ba0ff..2a88c10b61af345e6502ce0da34de80bf6bded5b 100644
--- a/source/blender/nodes/shader/nodes/node_shader_sepcomb_rgb.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_sepcomb_rgb.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_sepcomb_xyz.cc b/source/blender/nodes/shader/nodes/node_shader_sepcomb_xyz.cc
index f8064eb192a2fe57d1b79712e81e1b9d31c6e14c..94eb961c25de98725efdf5cd668eef29e0708b10 100644
--- a/source/blender/nodes/shader/nodes/node_shader_sepcomb_xyz.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_sepcomb_xyz.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_shader_to_rgb.cc b/source/blender/nodes/shader/nodes/node_shader_shader_to_rgb.cc
index 153b1abfbca2047cc141408b2aa38b35c65723f3..11dfa03ea40730c9c35fdfc2e6458b81d0686ab2 100644
--- a/source/blender/nodes/shader/nodes/node_shader_shader_to_rgb.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_shader_to_rgb.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_squeeze.cc b/source/blender/nodes/shader/nodes/node_shader_squeeze.cc
index 8396516001907c40ea906a57cf34ff543c8847d1..c22420d8d4791d3135684e90b2983b10df6bd150 100644
--- a/source/blender/nodes/shader/nodes/node_shader_squeeze.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_squeeze.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_subsurface_scattering.cc b/source/blender/nodes/shader/nodes/node_shader_subsurface_scattering.cc
index f60db81b4a90b6a863c6417e85d304ad04eb5656..17173ef020a35cb6251a94884a76d7c80c898303 100644
--- a/source/blender/nodes/shader/nodes/node_shader_subsurface_scattering.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_subsurface_scattering.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tangent.cc b/source/blender/nodes/shader/nodes/node_shader_tangent.cc
index c4e5660b9f8c81fdd438722eed83653d94dc6230..25489632594943115ca3b20d5fa6391f983fb80f 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tangent.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tangent.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_brick.cc b/source/blender/nodes/shader/nodes/node_shader_tex_brick.cc
index 81a69ef18da62dd5599da936c8a2cf9cc029942c..66d1ace22224bd70c6202985e4d6ca722edc8387 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_brick.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_brick.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_checker.cc b/source/blender/nodes/shader/nodes/node_shader_tex_checker.cc
index 6022f13821a53575b1588f06c56833b7ad39cb3a..047ae3032602adb071741ad2d6cf554b0603a2a4 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_checker.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_checker.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_coord.cc b/source/blender/nodes/shader/nodes/node_shader_tex_coord.cc
index 1bbaed88ea574d255a8c85d88e2506f41ebdac4c..ac986787d65a2be555e0d3475a9adc97463b808e 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_coord.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_coord.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_environment.cc b/source/blender/nodes/shader/nodes/node_shader_tex_environment.cc
index 7b947392084c0a9192bf2886ea977bd94bf56afe..41456091e1d4bdda399c12908d7fc8959ad5c266 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_environment.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_environment.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_gradient.cc b/source/blender/nodes/shader/nodes/node_shader_tex_gradient.cc
index 53be5bc09d952fe8d0dde82c1dc9be31b71cdd0b..f92ad4d9fd0d741f130254c017502c36ee33de91 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_gradient.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_gradient.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Gradienter Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Gradienter Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_image.cc b/source/blender/nodes/shader/nodes/node_shader_tex_image.cc
index d5479f46a35a247bd8222b702b74e6ce5fa742f8..19b5a50cd6b58533c4b9aa316041fb6acbbeecfb 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_image.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_image.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_magic.cc b/source/blender/nodes/shader/nodes/node_shader_tex_magic.cc
index e40914783b614fb8c55cfa152d81bbe8c6e8319b..982d80811fbcbe56cf1d607031e792cb21c33b0b 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_magic.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_magic.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_musgrave.cc b/source/blender/nodes/shader/nodes/node_shader_tex_musgrave.cc
index 45c2a83c17858d8421dec950e609dfec4fb9572d..8a672063943480f2e1ec4a9b57f418bfb9090ec3 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_musgrave.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_musgrave.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_noise.cc b/source/blender/nodes/shader/nodes/node_shader_tex_noise.cc
index 1c703313edffd0a81a42c89ba4847ca206426649..9b27c805a64c05ba6262113f5f1f04f46cc13ed3 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_noise.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_noise.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_pointdensity.cc b/source/blender/nodes/shader/nodes/node_shader_tex_pointdensity.cc
index 1a4cf70565fbcbe2eddbaf34d5cf2a91264a9624..f628d1ec77bcd8683214e2de020582a9239dd9bc 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_pointdensity.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_pointdensity.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_sky.cc b/source/blender/nodes/shader/nodes/node_shader_tex_sky.cc
index b8728d69bbae9e53482aeb470dce97850b7689d5..d4a0c092acdc65f0656ab8806c22e4fb9df8a857 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_sky.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_sky.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 #include "sky_model.h"
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_voronoi.cc b/source/blender/nodes/shader/nodes/node_shader_tex_voronoi.cc
index 209f96449cd9cf6df658f2f8705460b36b206ec8..1d6d16fa5e15cc4b2804147b609ea57be2c02ae2 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_voronoi.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_voronoi.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_wave.cc b/source/blender/nodes/shader/nodes/node_shader_tex_wave.cc
index fc6c66061fffe31961cc20880965b1d110aeb69e..68668fbe5beb9d0f156578b134076d80ea2fd30d 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_wave.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_wave.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_tex_white_noise.cc b/source/blender/nodes/shader/nodes/node_shader_tex_white_noise.cc
index 3a5bc98896c0b012ef7e90da23ccd95bd93988ed..0e2321b9cf97b60062dbacc96b1770445e499386 100644
--- a/source/blender/nodes/shader/nodes/node_shader_tex_white_noise.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_tex_white_noise.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_uv_along_stroke.cc b/source/blender/nodes/shader/nodes/node_shader_uv_along_stroke.cc
index 382a0f16ecdfd5ac9ddd0cc7f5486a621faa059e..fa98cb3aa27fe88ecee2e4b36011144ebc4ba4d7 100644
--- a/source/blender/nodes/shader/nodes/node_shader_uv_along_stroke.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_uv_along_stroke.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_uvmap.cc b/source/blender/nodes/shader/nodes/node_shader_uvmap.cc
index b004be75188818a9d3f631d1ce3d58ef059dbcdc..ddf4f357a30368df9a6ba259b81872bb5b07f14d 100644
--- a/source/blender/nodes/shader/nodes/node_shader_uvmap.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_uvmap.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_value.cc b/source/blender/nodes/shader/nodes/node_shader_value.cc
index 265f03e6e882853d06102c87385d2eef81e31830..a1e2565aec1704dedff9d6017a554bf3cc23e60e 100644
--- a/source/blender/nodes/shader/nodes/node_shader_value.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_value.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_vector_displacement.cc b/source/blender/nodes/shader/nodes/node_shader_vector_displacement.cc
index 3486eda16357b1d72623f9d8a233aabaefef20b5..04cf0b72f32435b602216b0a7eb008b962d2ed56 100644
--- a/source/blender/nodes/shader/nodes/node_shader_vector_displacement.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_vector_displacement.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_vector_math.cc b/source/blender/nodes/shader/nodes/node_shader_vector_math.cc
index 591734c7dd693bc622f90b9b8ae776cc6eb068c8..49765f797c56790a529831697ee04dcbab8b97fa 100644
--- a/source/blender/nodes/shader/nodes/node_shader_vector_math.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_vector_math.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_vector_rotate.cc b/source/blender/nodes/shader/nodes/node_shader_vector_rotate.cc
index d8dcd028c56497e9880b145dba3b536104379247..b8c44b527b50a4b7c2c96522b80607c392bd315b 100644
--- a/source/blender/nodes/shader/nodes/node_shader_vector_rotate.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_vector_rotate.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_vector_transform.cc b/source/blender/nodes/shader/nodes/node_shader_vector_transform.cc
index a8a6902e30ca27270053f1274362d23e615b6550..d610e1309a785157db934a79520decdefcf0605f 100644
--- a/source/blender/nodes/shader/nodes/node_shader_vector_transform.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_vector_transform.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shdnodes
diff --git a/source/blender/nodes/shader/nodes/node_shader_vertex_color.cc b/source/blender/nodes/shader/nodes/node_shader_vertex_color.cc
index 6501527ef5d1de7d5dc60bb06da7be896a2beb57..39c32edfe90cc3569245fc06e1cbe7e738d07ec5 100644
--- a/source/blender/nodes/shader/nodes/node_shader_vertex_color.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_vertex_color.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_volume_absorption.cc b/source/blender/nodes/shader/nodes/node_shader_volume_absorption.cc
index a31bfdb6543c24fc84e87bcd353ad2f0bf6826a1..e0fef6b0d19c76f8908c67e8c8c6e26e885235f7 100644
--- a/source/blender/nodes/shader/nodes/node_shader_volume_absorption.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_volume_absorption.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_volume_info.cc b/source/blender/nodes/shader/nodes/node_shader_volume_info.cc
index 6a973cdbad78b2a0af507635bf035d1080f11e5d..6676a7653fe5e21f69f4490c452b45585d6f8915 100644
--- a/source/blender/nodes/shader/nodes/node_shader_volume_info.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_volume_info.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_volume_principled.cc b/source/blender/nodes/shader/nodes/node_shader_volume_principled.cc
index 54e92eafcf62107355e7b96cfcdca9a014c535ed..980782f571c311769b9493d6aefe239c18e00545 100644
--- a/source/blender/nodes/shader/nodes/node_shader_volume_principled.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_volume_principled.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_volume_scatter.cc b/source/blender/nodes/shader/nodes/node_shader_volume_scatter.cc
index abd10cfcbcf12e5d514dd39ae35e5e4ed42b4584..6408efb769d4cfa60bdc29a66b3a18adcc7a80d5 100644
--- a/source/blender/nodes/shader/nodes/node_shader_volume_scatter.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_volume_scatter.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_wavelength.cc b/source/blender/nodes/shader/nodes/node_shader_wavelength.cc
index a67c7830edd6175f3ffaa6362f44e018760776ba..522928a30faefafb9bd5b44ac7849695985374ba 100644
--- a/source/blender/nodes/shader/nodes/node_shader_wavelength.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_wavelength.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/shader/nodes/node_shader_wireframe.cc b/source/blender/nodes/shader/nodes/node_shader_wireframe.cc
index 1ba2391a09ded6826beee1abb004a6e2faad25b8..1204c3a678fc1c80fad38b9e1bc5ffd8cba29307 100644
--- a/source/blender/nodes/shader/nodes/node_shader_wireframe.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_wireframe.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 #include "node_shader_util.hh"
 
diff --git a/source/blender/nodes/texture/CMakeLists.txt b/source/blender/nodes/texture/CMakeLists.txt
index e595343b7d28eb329aca2557815caa14070df9d9..35b83b386cf493cf89eee535020176c45a84fc1f 100644
--- a/source/blender/nodes/texture/CMakeLists.txt
+++ b/source/blender/nodes/texture/CMakeLists.txt
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/source/blender/nodes/texture/node_texture_tree.c b/source/blender/nodes/texture/node_texture_tree.c
index 82ed43be779ef67b5f2765a793b82bca34c61a66..c318d101863588758d13faa1ef0d21a3975512dd 100644
--- a/source/blender/nodes/texture/node_texture_tree.c
+++ b/source/blender/nodes/texture/node_texture_tree.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/texture/node_texture_util.c b/source/blender/nodes/texture/node_texture_util.c
index dc5e2bfcd6b3dece937c2a25031bb37cbfc599e5..76208104a8c0aaf3fffbfaa11c7c6275f243bcdb 100644
--- a/source/blender/nodes/texture/node_texture_util.c
+++ b/source/blender/nodes/texture/node_texture_util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/texture/node_texture_util.h b/source/blender/nodes/texture/node_texture_util.h
index 7c8e39925bcf181283695bad240b4efb6391dd14..eec94932fff61a8156385249e83947055e9c0860 100644
--- a/source/blender/nodes/texture/node_texture_util.h
+++ b/source/blender/nodes/texture/node_texture_util.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup nodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_at.c b/source/blender/nodes/texture/nodes/node_texture_at.c
index 41dea303ea2b2fd2211ed71ddf0240777059e364..74f279d65c7c93d33021379207071db4638cbe16 100644
--- a/source/blender/nodes/texture/nodes/node_texture_at.c
+++ b/source/blender/nodes/texture/nodes/node_texture_at.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_bricks.c b/source/blender/nodes/texture/nodes/node_texture_bricks.c
index 0dc92dc33d0ad473c51f00dacf3156e6229fce8d..bfd43560c2dab56e864117874a037ee7d41e879f 100644
--- a/source/blender/nodes/texture/nodes/node_texture_bricks.c
+++ b/source/blender/nodes/texture/nodes/node_texture_bricks.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_checker.c b/source/blender/nodes/texture/nodes/node_texture_checker.c
index 62657cd7def0945d2d4d01e0c74c56b342e7f079..08f87cb78755e5cdaf6584e1d5732134c670ad4d 100644
--- a/source/blender/nodes/texture/nodes/node_texture_checker.c
+++ b/source/blender/nodes/texture/nodes/node_texture_checker.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_common.c b/source/blender/nodes/texture/nodes/node_texture_common.c
index 9bd16a318c9ee060bd39bdd7cb661a1b536d5667..96345b00a82eb92820f4d0fa8cde608c236ccc9a 100644
--- a/source/blender/nodes/texture/nodes/node_texture_common.c
+++ b/source/blender/nodes/texture/nodes/node_texture_common.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_compose.c b/source/blender/nodes/texture/nodes/node_texture_compose.c
index cd918ca831411b96780ff48171dbcdadfac37a3a..e341b65ac97d93f4a2049f65c84c823690bff48a 100644
--- a/source/blender/nodes/texture/nodes/node_texture_compose.c
+++ b/source/blender/nodes/texture/nodes/node_texture_compose.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_coord.c b/source/blender/nodes/texture/nodes/node_texture_coord.c
index e31fdcafbf260842155e394fed1f346f36ee2b5c..e74dfd378d999d793d0631f5b94ff5d1c592b0d5 100644
--- a/source/blender/nodes/texture/nodes/node_texture_coord.c
+++ b/source/blender/nodes/texture/nodes/node_texture_coord.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_curves.c b/source/blender/nodes/texture/nodes/node_texture_curves.c
index 7fed45c555837b570943a67e1add0d5535442a82..dee4531746fbbcc23be1023b616ba5737d5b8e02 100644
--- a/source/blender/nodes/texture/nodes/node_texture_curves.c
+++ b/source/blender/nodes/texture/nodes/node_texture_curves.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_decompose.c b/source/blender/nodes/texture/nodes/node_texture_decompose.c
index 9c3cb6911e19cb74dbfedb336f6e90c259a32049..21c3944e2550ab9e3482bb85708395213cac48bc 100644
--- a/source/blender/nodes/texture/nodes/node_texture_decompose.c
+++ b/source/blender/nodes/texture/nodes/node_texture_decompose.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_distance.c b/source/blender/nodes/texture/nodes/node_texture_distance.c
index 2f8b28722bd7e767959d17e54527c46989c5f2a8..e236b6743a6e729ad28042a7e56f61194836e8cb 100644
--- a/source/blender/nodes/texture/nodes/node_texture_distance.c
+++ b/source/blender/nodes/texture/nodes/node_texture_distance.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_hueSatVal.c b/source/blender/nodes/texture/nodes/node_texture_hueSatVal.c
index f405c3b0bec682e96589b416f60417ac3dcbb31d..989d94953f732bd290a1e0a7343c68d633dd64ea 100644
--- a/source/blender/nodes/texture/nodes/node_texture_hueSatVal.c
+++ b/source/blender/nodes/texture/nodes/node_texture_hueSatVal.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_image.c b/source/blender/nodes/texture/nodes/node_texture_image.c
index 18ae36094077d2dd7f2c40ab6d5d47f64c758c94..e94c78b41ea42da684e9413ac188fa72ccf4dd5a 100644
--- a/source/blender/nodes/texture/nodes/node_texture_image.c
+++ b/source/blender/nodes/texture/nodes/node_texture_image.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_invert.c b/source/blender/nodes/texture/nodes/node_texture_invert.c
index 7854ac4b5b89cc55562bd953cf60b61c992813ab..6343f5f2caa394379689e3bdd12443d16864df51 100644
--- a/source/blender/nodes/texture/nodes/node_texture_invert.c
+++ b/source/blender/nodes/texture/nodes/node_texture_invert.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_math.c b/source/blender/nodes/texture/nodes/node_texture_math.c
index 2f50f6aaae0c3c6399caba1656746474edd61a42..5867d6b91e101628ead7617956e01aa3bc8e745d 100644
--- a/source/blender/nodes/texture/nodes/node_texture_math.c
+++ b/source/blender/nodes/texture/nodes/node_texture_math.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_mixRgb.c b/source/blender/nodes/texture/nodes/node_texture_mixRgb.c
index 5599807d8b1778723bfc3fdb8ff68a9c6ad5e0f6..cd6b54c4cf8c5c6e9df1c7baffcf0bcff4a0873b 100644
--- a/source/blender/nodes/texture/nodes/node_texture_mixRgb.c
+++ b/source/blender/nodes/texture/nodes/node_texture_mixRgb.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_output.c b/source/blender/nodes/texture/nodes/node_texture_output.c
index 59c2d2766d0ba4af9be9d5145b20569210302b88..cf5e32cb4862c81dc3c8e44c86ffbf49858525e8 100644
--- a/source/blender/nodes/texture/nodes/node_texture_output.c
+++ b/source/blender/nodes/texture/nodes/node_texture_output.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_proc.c b/source/blender/nodes/texture/nodes/node_texture_proc.c
index 38e4f0268e8a589f7d61dde848aaa9bc29f95d11..fd7e6fdfc7fff51b5263a07e8c6e9c82862893a9 100644
--- a/source/blender/nodes/texture/nodes/node_texture_proc.c
+++ b/source/blender/nodes/texture/nodes/node_texture_proc.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_rotate.c b/source/blender/nodes/texture/nodes/node_texture_rotate.c
index 18024a4d41d2d6927afc1f00d07788dea2a32be6..0bd2de76a9c7ccf993967834086e09a217098b89 100644
--- a/source/blender/nodes/texture/nodes/node_texture_rotate.c
+++ b/source/blender/nodes/texture/nodes/node_texture_rotate.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_scale.c b/source/blender/nodes/texture/nodes/node_texture_scale.c
index d570c73a67b8f9d336bb34e4ea5155ec40812706..d565146cf091205f06c24f023858e79aa1d22279 100644
--- a/source/blender/nodes/texture/nodes/node_texture_scale.c
+++ b/source/blender/nodes/texture/nodes/node_texture_scale.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_texture.c b/source/blender/nodes/texture/nodes/node_texture_texture.c
index f8f8f25cb5a5531cb3cca7c14b4f542f78742f13..2d2b4e06665d433dd4c64aac24737b0aff963a93 100644
--- a/source/blender/nodes/texture/nodes/node_texture_texture.c
+++ b/source/blender/nodes/texture/nodes/node_texture_texture.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_translate.c b/source/blender/nodes/texture/nodes/node_texture_translate.c
index 732cd0a89a1c23de4af2fe16a8c555d2f7b21651..7ce7722938d60eacbf00344f01b6bb3e2811840c 100644
--- a/source/blender/nodes/texture/nodes/node_texture_translate.c
+++ b/source/blender/nodes/texture/nodes/node_texture_translate.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_valToNor.c b/source/blender/nodes/texture/nodes/node_texture_valToNor.c
index 3f0d4fb668e313b2c2da0e5f1029a07427031a18..492aadf32816cf21930d68581845969315363123 100644
--- a/source/blender/nodes/texture/nodes/node_texture_valToNor.c
+++ b/source/blender/nodes/texture/nodes/node_texture_valToNor.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_valToRgb.c b/source/blender/nodes/texture/nodes/node_texture_valToRgb.c
index 844a41886639e253c23684ff40b711cd4ad3aa8f..e41e83555fc0ad7a8a3cc41b7a64c4a3794ff045 100644
--- a/source/blender/nodes/texture/nodes/node_texture_valToRgb.c
+++ b/source/blender/nodes/texture/nodes/node_texture_valToRgb.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/nodes/texture/nodes/node_texture_viewer.c b/source/blender/nodes/texture/nodes/node_texture_viewer.c
index ea69de9a1d64992efaaa874c6d1c57ccda3b3ff1..72da751f8ef64ada280c3ebf79de0e412babebcf 100644
--- a/source/blender/nodes/texture/nodes/node_texture_viewer.c
+++ b/source/blender/nodes/texture/nodes/node_texture_viewer.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup texnodes
diff --git a/source/blender/python/BPY_extern.h b/source/blender/python/BPY_extern.h
index b6604846bb8e9ad2aa18e33d7d8a35f7f7163688..d753b4ca3b0f15c8bc79680e901cfd867fb9237f 100644
--- a/source/blender/python/BPY_extern.h
+++ b/source/blender/python/BPY_extern.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup python
diff --git a/source/blender/python/BPY_extern_clog.h b/source/blender/python/BPY_extern_clog.h
index 14b57b4cc5c71f660d72ea58d54e1d4a58458db1..f6ecf634d2671cac3c1c41585d235e300f20bf6d 100644
--- a/source/blender/python/BPY_extern_clog.h
+++ b/source/blender/python/BPY_extern_clog.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup python
diff --git a/source/blender/python/BPY_extern_python.h b/source/blender/python/BPY_extern_python.h
index 56662ffc040dd36172703aab9383b875329fab35..2e901d7caa8e0b7c2d20086fb2f1f9956efd3e52 100644
--- a/source/blender/python/BPY_extern_python.h
+++ b/source/blender/python/BPY_extern_python.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup python
diff --git a/source/blender/python/BPY_extern_run.h b/source/blender/python/BPY_extern_run.h
index 9088a4b89c0b694c577c17e644a8190d2989764f..6bedf533af17c12efbe4b85e59e50ee0adc8e18f 100644
--- a/source/blender/python/BPY_extern_run.h
+++ b/source/blender/python/BPY_extern_run.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup python
diff --git a/source/blender/python/CMakeLists.txt b/source/blender/python/CMakeLists.txt
index 030576fefd114f5135eb22968efbcb4f7cbb0645..9f6ee359d675c0cceba84cd611767321b5e16aee 100644
--- a/source/blender/python/CMakeLists.txt
+++ b/source/blender/python/CMakeLists.txt
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 add_subdirectory(intern)
 add_subdirectory(generic)
diff --git a/source/blender/python/bmesh/CMakeLists.txt b/source/blender/python/bmesh/CMakeLists.txt
index 89df127075d91e32cd2d90dbcec96a52421e6005..446e18fb0f779c8942464e983ce37beeb53839d6 100644
--- a/source/blender/python/bmesh/CMakeLists.txt
+++ b/source/blender/python/bmesh/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/source/blender/python/bmesh/bmesh_py_api.c b/source/blender/python/bmesh/bmesh_py_api.c
index 9cafb70043008c0a6cf97b685a45219b01394767..3ddab4bebd99631b162b9cd830ab8760a97861b6 100644
--- a/source/blender/python/bmesh/bmesh_py_api.c
+++ b/source/blender/python/bmesh/bmesh_py_api.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_api.h b/source/blender/python/bmesh/bmesh_py_api.h
index 357f416f26636246d85152885965527348d0dc05..0714c54ab1f1e35c01e72a690cae7bfd0a2b15ef 100644
--- a/source/blender/python/bmesh/bmesh_py_api.h
+++ b/source/blender/python/bmesh/bmesh_py_api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_geometry.c b/source/blender/python/bmesh/bmesh_py_geometry.c
index f5090cd568b311bf30897a1ad6f98ebe9cf2d7c4..5625812fbdafae76f068b7015e7910b6eac4c464 100644
--- a/source/blender/python/bmesh/bmesh_py_geometry.c
+++ b/source/blender/python/bmesh/bmesh_py_geometry.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_geometry.h b/source/blender/python/bmesh/bmesh_py_geometry.h
index dcb8c59f68b3dba77ae4976a2fce3edfe1f0ca1d..bcec21b2c343fb6424406979d1960e2c81ea2526 100644
--- a/source/blender/python/bmesh/bmesh_py_geometry.h
+++ b/source/blender/python/bmesh/bmesh_py_geometry.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_ops.c b/source/blender/python/bmesh/bmesh_py_ops.c
index 01914992f3ed53dbc873467815db3bc618ee91ca..8b343b00342d01228d6d57ff002a72f71a119a25 100644
--- a/source/blender/python/bmesh/bmesh_py_ops.c
+++ b/source/blender/python/bmesh/bmesh_py_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_ops.h b/source/blender/python/bmesh/bmesh_py_ops.h
index 442af51fd17e51fed383fbcad7548af634d86385..2186676a054f93705426d07c6f118024d300ecb6 100644
--- a/source/blender/python/bmesh/bmesh_py_ops.h
+++ b/source/blender/python/bmesh/bmesh_py_ops.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_ops_call.c b/source/blender/python/bmesh/bmesh_py_ops_call.c
index f1423c20b3bf63074700b146e5acf5a85a8b96ae..6492f528a5ead4cb3896935459528f4431d8087a 100644
--- a/source/blender/python/bmesh/bmesh_py_ops_call.c
+++ b/source/blender/python/bmesh/bmesh_py_ops_call.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_ops_call.h b/source/blender/python/bmesh/bmesh_py_ops_call.h
index c567375c5689425d67a78a41823b01a4cd541cc6..61c81f37b311c533f62c14f48dbfab25e8b44ac7 100644
--- a/source/blender/python/bmesh/bmesh_py_ops_call.h
+++ b/source/blender/python/bmesh/bmesh_py_ops_call.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_types.c b/source/blender/python/bmesh/bmesh_py_types.c
index 38ec242fa493218d496407896b25a753f549525f..ccd483083ef74032b2798bfce353bca035798ebf 100644
--- a/source/blender/python/bmesh/bmesh_py_types.c
+++ b/source/blender/python/bmesh/bmesh_py_types.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_types.h b/source/blender/python/bmesh/bmesh_py_types.h
index 3786a0552d2e7e8f91efe05ed81653966ef100d5..f1e8243c73b2bc9edf4dbfa7bf3506fc19ed6489 100644
--- a/source/blender/python/bmesh/bmesh_py_types.h
+++ b/source/blender/python/bmesh/bmesh_py_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_types_customdata.c b/source/blender/python/bmesh/bmesh_py_types_customdata.c
index 1e1ba5edb0f76ce44b4e576af5551d1b0b67cea7..1686f99df9943b7e39abcb3486f0ee93e2c2d0d9 100644
--- a/source/blender/python/bmesh/bmesh_py_types_customdata.c
+++ b/source/blender/python/bmesh/bmesh_py_types_customdata.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_types_customdata.h b/source/blender/python/bmesh/bmesh_py_types_customdata.h
index d81e149cac19fd1c4c7e694e9d6a977558af36bc..ba995a33515612249e6c60bdeb87c7df46e42637 100644
--- a/source/blender/python/bmesh/bmesh_py_types_customdata.h
+++ b/source/blender/python/bmesh/bmesh_py_types_customdata.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_types_meshdata.c b/source/blender/python/bmesh/bmesh_py_types_meshdata.c
index dffc0814d9d965142301cdb8fbf904c30482ee66..6e6207f72297ced11d074ef037a2b5814bb4d405 100644
--- a/source/blender/python/bmesh/bmesh_py_types_meshdata.c
+++ b/source/blender/python/bmesh/bmesh_py_types_meshdata.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_types_meshdata.h b/source/blender/python/bmesh/bmesh_py_types_meshdata.h
index b52bf6889bc480eb57b577b38f1eb2f0f6b61024..c349f7a99621d5dd046507ba2e7097cd626d7298 100644
--- a/source/blender/python/bmesh/bmesh_py_types_meshdata.h
+++ b/source/blender/python/bmesh/bmesh_py_types_meshdata.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_types_select.c b/source/blender/python/bmesh/bmesh_py_types_select.c
index bc8c6853ff56be3e8447a524303172dc77b3df9f..93bce055b12b0e8874af7b46b8e0daddbffb7777 100644
--- a/source/blender/python/bmesh/bmesh_py_types_select.c
+++ b/source/blender/python/bmesh/bmesh_py_types_select.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_types_select.h b/source/blender/python/bmesh/bmesh_py_types_select.h
index 6b8609e36a6954416287584caab4cf3e2408764d..428f1f8235edefb02c0c4bb2c9b29e79689d01e1 100644
--- a/source/blender/python/bmesh/bmesh_py_types_select.h
+++ b/source/blender/python/bmesh/bmesh_py_types_select.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_utils.c b/source/blender/python/bmesh/bmesh_py_utils.c
index 1c3334f1adc6c12f88495b0207637f132de1d44b..1bee1342a073ff80957deac4bf8015eadac95241 100644
--- a/source/blender/python/bmesh/bmesh_py_utils.c
+++ b/source/blender/python/bmesh/bmesh_py_utils.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/bmesh/bmesh_py_utils.h b/source/blender/python/bmesh/bmesh_py_utils.h
index 27eccca4535618c85309db79474ccff7b615a75c..c448662a1bed03e7c9dd41e082a960a5f85d3bad 100644
--- a/source/blender/python/bmesh/bmesh_py_utils.h
+++ b/source/blender/python/bmesh/bmesh_py_utils.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pybmesh
diff --git a/source/blender/python/generic/CMakeLists.txt b/source/blender/python/generic/CMakeLists.txt
index 144487cb020271969ab3681f9242e73d858c4133..69bcfdfae4e69a0be09cf96051590fc76a22d96e 100644
--- a/source/blender/python/generic/CMakeLists.txt
+++ b/source/blender/python/generic/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/source/blender/python/generic/bgl.c b/source/blender/python/generic/bgl.c
index 3f01ff86f49635e052177b1c40ffceba46cfcb35..92ed0c51b1ff1a4280f53920ce9384f4e0374591 100644
--- a/source/blender/python/generic/bgl.c
+++ b/source/blender/python/generic/bgl.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pygen
diff --git a/source/blender/python/generic/bgl.h b/source/blender/python/generic/bgl.h
index 479c69b5de26f11e51f1d7199302bd469212a6c5..c11ece69d81e26c361a83a7f36bd4d6417e4de17 100644
--- a/source/blender/python/generic/bgl.h
+++ b/source/blender/python/generic/bgl.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pygen
diff --git a/source/blender/python/generic/bl_math_py_api.c b/source/blender/python/generic/bl_math_py_api.c
index 2211cc931da4bc6a9cd4a2adb03560bc966fba06..0f0a2bf0ed1f542afa2de9959002bf2ab721e2b5 100644
--- a/source/blender/python/generic/bl_math_py_api.c
+++ b/source/blender/python/generic/bl_math_py_api.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /**
  * \file
diff --git a/source/blender/python/generic/bl_math_py_api.h b/source/blender/python/generic/bl_math_py_api.h
index 484304948f3c39805b3f7f66867fa91abbcb77e9..e5321c5ada10ea3e314ccb6b4cc22f7038a841b3 100644
--- a/source/blender/python/generic/bl_math_py_api.h
+++ b/source/blender/python/generic/bl_math_py_api.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /**
  * \file
diff --git a/source/blender/python/generic/blf_py_api.c b/source/blender/python/generic/blf_py_api.c
index a49c943df9446789aa123c100110c30a7c2c382a..3fbfd1655c53d859b4884c206bb06431afecdf78 100644
--- a/source/blender/python/generic/blf_py_api.c
+++ b/source/blender/python/generic/blf_py_api.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pygen
diff --git a/source/blender/python/generic/blf_py_api.h b/source/blender/python/generic/blf_py_api.h
index c47edd1eaabba05ec443ccbd2df4bfed7ae79c9b..a6211c013b97796d1de56eca07266939356e756c 100644
--- a/source/blender/python/generic/blf_py_api.h
+++ b/source/blender/python/generic/blf_py_api.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/python/generic/bpy_threads.c b/source/blender/python/generic/bpy_threads.c
index 41e2fb4adf283ccb0ba29f14b4d3cfa2327935bf..e59fc2b03443524f4febd4299fb66c1c14d68b4d 100644
--- a/source/blender/python/generic/bpy_threads.c
+++ b/source/blender/python/generic/bpy_threads.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pygen
diff --git a/source/blender/python/generic/idprop_py_api.c b/source/blender/python/generic/idprop_py_api.c
index 0a870102b6f7a3cc1368b1a13418b8709ccd9114..c05c003b176a78d9928591e3b794898be29b7923 100644
--- a/source/blender/python/generic/idprop_py_api.c
+++ b/source/blender/python/generic/idprop_py_api.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pygen
diff --git a/source/blender/python/generic/idprop_py_api.h b/source/blender/python/generic/idprop_py_api.h
index e4addcecc103c71261b4950cc60f71cdec449f58..51d13e3c1d7e2fc1dbce4d14cb25e848580edf60 100644
--- a/source/blender/python/generic/idprop_py_api.h
+++ b/source/blender/python/generic/idprop_py_api.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pygen
diff --git a/source/blender/python/generic/idprop_py_ui_api.c b/source/blender/python/generic/idprop_py_ui_api.c
index 37ba27f7315d9397846f262c186df1cc8c34b184..53af75720e5b855e4f9c3eddf0367512bcd8cec3 100644
--- a/source/blender/python/generic/idprop_py_ui_api.c
+++ b/source/blender/python/generic/idprop_py_ui_api.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pygen
diff --git a/source/blender/python/generic/idprop_py_ui_api.h b/source/blender/python/generic/idprop_py_ui_api.h
index f678e5ae9c140d3ace429f64b7ada726fab01c41..e3017c9ad0a84ae256fc7ca3451de3c9aea3a62b 100644
--- a/source/blender/python/generic/idprop_py_ui_api.h
+++ b/source/blender/python/generic/idprop_py_ui_api.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pygen
diff --git a/source/blender/python/generic/imbuf_py_api.c b/source/blender/python/generic/imbuf_py_api.c
index 87afc40330c84cac565313ae1aa4d53bf61001e4..bfe25435eabc10d90f311b18c57299b84a54a7ba 100644
--- a/source/blender/python/generic/imbuf_py_api.c
+++ b/source/blender/python/generic/imbuf_py_api.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pygen
diff --git a/source/blender/python/generic/imbuf_py_api.h b/source/blender/python/generic/imbuf_py_api.h
index 897423415b32ca1698586b988a2b56b4bde708f3..c4f32b71b84f67db315a570c923527e9def950f7 100644
--- a/source/blender/python/generic/imbuf_py_api.h
+++ b/source/blender/python/generic/imbuf_py_api.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/python/generic/py_capi_rna.c b/source/blender/python/generic/py_capi_rna.c
index a6a0d820d07ae3dfdaf18334dd15e138317640ad..8bb91d311cdceb9356354499babf990bfe8b725a 100644
--- a/source/blender/python/generic/py_capi_rna.c
+++ b/source/blender/python/generic/py_capi_rna.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pygen
diff --git a/source/blender/python/generic/py_capi_rna.h b/source/blender/python/generic/py_capi_rna.h
index 9733cb043ea0f80bcd2fbf178e72e8a0354c2eea..ea32e58dc49d3561b6d46a71e3277ef0e5dfec52 100644
--- a/source/blender/python/generic/py_capi_rna.h
+++ b/source/blender/python/generic/py_capi_rna.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /**
  * \file
diff --git a/source/blender/python/generic/py_capi_utils.c b/source/blender/python/generic/py_capi_utils.c
index acb6d76f30b623496afafbe3623e272288443180..7a8c320c39dc72ea4e2e13dccabef48042de936e 100644
--- a/source/blender/python/generic/py_capi_utils.c
+++ b/source/blender/python/generic/py_capi_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pygen
diff --git a/source/blender/python/generic/py_capi_utils.h b/source/blender/python/generic/py_capi_utils.h
index f08665d75e7e99e68f2891d90e786f757755791c..0f94b2641599f5bdcfb5c0c6207a58bba66a0de5 100644
--- a/source/blender/python/generic/py_capi_utils.h
+++ b/source/blender/python/generic/py_capi_utils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pygen
diff --git a/source/blender/python/generic/python_utildefines.h b/source/blender/python/generic/python_utildefines.h
index 25300c2fd4519b17fa1c14b33ede702594892ee9..d9e7def2054f8756e3b7e4e8853f892f76b1cf1c 100644
--- a/source/blender/python/generic/python_utildefines.h
+++ b/source/blender/python/generic/python_utildefines.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pygen
diff --git a/source/blender/python/gpu/CMakeLists.txt b/source/blender/python/gpu/CMakeLists.txt
index 1424b35a004cd023cdea7e3d449df431a43dbf41..644bbd18173428fb0c8e1d436e534c62b85e5321 100644
--- a/source/blender/python/gpu/CMakeLists.txt
+++ b/source/blender/python/gpu/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/source/blender/python/gpu/gpu_py.c b/source/blender/python/gpu/gpu_py.c
index a2d4b0e103169f8edc20277a85660d3c3ebd5c67..987d2fbd627975a735b48ef4ce5f0ce7be4c1f2f 100644
--- a/source/blender/python/gpu/gpu_py.c
+++ b/source/blender/python/gpu/gpu_py.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py.h b/source/blender/python/gpu/gpu_py.h
index 39e5997f8669d46e262587b1df093e4c18410ee8..2914e370cdc2523f9cfd95772798cbb238c120b3 100644
--- a/source/blender/python/gpu/gpu_py.h
+++ b/source/blender/python/gpu/gpu_py.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_api.c b/source/blender/python/gpu/gpu_py_api.c
index db84e03adcbed1733e016858e64c895d655d4683..d45fdc211301913d4093e328a7c3dce63676dd7b 100644
--- a/source/blender/python/gpu/gpu_py_api.c
+++ b/source/blender/python/gpu/gpu_py_api.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_api.h b/source/blender/python/gpu/gpu_py_api.h
index 38452ad67c1d31cb29b7ee13599334d9a4f4419f..6b31a435ef26afb6ea97f9d2ae6668267348323a 100644
--- a/source/blender/python/gpu/gpu_py_api.h
+++ b/source/blender/python/gpu/gpu_py_api.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_batch.c b/source/blender/python/gpu/gpu_py_batch.c
index c0c0aa0028d6b8561ddd819d09c47f0fc3677583..486601f4c8644268557d8b8c40beb1f6f39b39f9 100644
--- a/source/blender/python/gpu/gpu_py_batch.c
+++ b/source/blender/python/gpu/gpu_py_batch.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2015, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_batch.h b/source/blender/python/gpu/gpu_py_batch.h
index 84332ab4ca61f33a5e1e9b9714cf8ed7ab17c0fa..5710d165ceef396db98cf72979ebde7895b4a661 100644
--- a/source/blender/python/gpu/gpu_py_batch.h
+++ b/source/blender/python/gpu/gpu_py_batch.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_buffer.c b/source/blender/python/gpu/gpu_py_buffer.c
index f074b51af32718fd82aa1e22415d7fb0f6bfdd4b..e0c20b64c63bc460b13c42a7bd2fb3706db52a20 100644
--- a/source/blender/python/gpu/gpu_py_buffer.c
+++ b/source/blender/python/gpu/gpu_py_buffer.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_buffer.h b/source/blender/python/gpu/gpu_py_buffer.h
index 3dcf335230dc20ee8cdb14b5d244f88c0042f8cc..9e23eb29166961e8fe3ec3bb12d15e5b0f07daec 100644
--- a/source/blender/python/gpu/gpu_py_buffer.h
+++ b/source/blender/python/gpu/gpu_py_buffer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_capabilities.c b/source/blender/python/gpu/gpu_py_capabilities.c
index 11e7d48f0962dfc51117be574d69fc7c9cd9ba81..b892167cd76f8d6fdfa85b18e011bf5afffa4dee 100644
--- a/source/blender/python/gpu/gpu_py_capabilities.c
+++ b/source/blender/python/gpu/gpu_py_capabilities.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_capabilities.h b/source/blender/python/gpu/gpu_py_capabilities.h
index ac138dda0c9132af5ea607d7e06a9678ec88c664..8e060508be1801abda5194a9b2e0ba7b8e7627f7 100644
--- a/source/blender/python/gpu/gpu_py_capabilities.h
+++ b/source/blender/python/gpu/gpu_py_capabilities.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_element.c b/source/blender/python/gpu/gpu_py_element.c
index 2fb722f74dba90aaf7f2eaa1cd0bab36ba0a88bf..af993539f18910a544cecd23da7863cd8500f0fe 100644
--- a/source/blender/python/gpu/gpu_py_element.c
+++ b/source/blender/python/gpu/gpu_py_element.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_element.h b/source/blender/python/gpu/gpu_py_element.h
index 1e4e905dda6a05a40fdc69e7653aa0cb3f0ebf67..d35acf5592dd40e84e314755ca8008a68cd13746 100644
--- a/source/blender/python/gpu/gpu_py_element.h
+++ b/source/blender/python/gpu/gpu_py_element.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_framebuffer.c b/source/blender/python/gpu/gpu_py_framebuffer.c
index 412fcac02cabcf9bbbc3446269652b4bdeb1e311..5cc36a7b61badaf603fec4d1dcb7f17722ec72e8 100644
--- a/source/blender/python/gpu/gpu_py_framebuffer.c
+++ b/source/blender/python/gpu/gpu_py_framebuffer.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_framebuffer.h b/source/blender/python/gpu/gpu_py_framebuffer.h
index 4b44436f5cf86490069faa1849b90b009d704103..9c53208e46ef995810fa835010ff8d63b763b479 100644
--- a/source/blender/python/gpu/gpu_py_framebuffer.h
+++ b/source/blender/python/gpu/gpu_py_framebuffer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_matrix.c b/source/blender/python/gpu/gpu_py_matrix.c
index cc9b3d702e2f4c3b5e6eb562f26c451b65f6afbd..a47e3dc8a5fa34805290e0d53ab9d762f11fb6d6 100644
--- a/source/blender/python/gpu/gpu_py_matrix.c
+++ b/source/blender/python/gpu/gpu_py_matrix.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_matrix.h b/source/blender/python/gpu/gpu_py_matrix.h
index 6af687f60ed62badef7ded4c214813e44379444f..2283e95eea3f5f0b2201192377343d38389e62f7 100644
--- a/source/blender/python/gpu/gpu_py_matrix.h
+++ b/source/blender/python/gpu/gpu_py_matrix.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_offscreen.c b/source/blender/python/gpu/gpu_py_offscreen.c
index 19013dc9ca375cf74b43988faf913dab4a4dde2d..32bfe47ef0b3d31917fa3e119bd1e68d9f931501 100644
--- a/source/blender/python/gpu/gpu_py_offscreen.c
+++ b/source/blender/python/gpu/gpu_py_offscreen.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2015, Blender Foundation.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_offscreen.h b/source/blender/python/gpu/gpu_py_offscreen.h
index 78bad595a3d5f2853e2dae065495065484931322..b9fbc6aab3c569ff2273e05f1a8fa0f6c9b64b8a 100644
--- a/source/blender/python/gpu/gpu_py_offscreen.h
+++ b/source/blender/python/gpu/gpu_py_offscreen.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_platform.c b/source/blender/python/gpu/gpu_py_platform.c
index 62310a83642f8317b734ec72d49dcc65c759888d..6c5a5bdaaf88251a66d9199784908aad81f34fc5 100644
--- a/source/blender/python/gpu/gpu_py_platform.c
+++ b/source/blender/python/gpu/gpu_py_platform.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_platform.h b/source/blender/python/gpu/gpu_py_platform.h
index 19e3e41fb497a489783d2a323bca09e50a6f1088..770bddf956b19a17f6572f46bf1f1f158a92b1af 100644
--- a/source/blender/python/gpu/gpu_py_platform.h
+++ b/source/blender/python/gpu/gpu_py_platform.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_select.c b/source/blender/python/gpu/gpu_py_select.c
index 43980530f38206341d14fe8c1bfbad751a76c95b..8e5c172f90c6c7c1d4fc39935196db8de3e8efd7 100644
--- a/source/blender/python/gpu/gpu_py_select.c
+++ b/source/blender/python/gpu/gpu_py_select.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_select.h b/source/blender/python/gpu/gpu_py_select.h
index 12152c82909b482830a2ce843486d98c674b7bcb..cb2fb7cd788a079cc33c883dff8d3527d2132b6a 100644
--- a/source/blender/python/gpu/gpu_py_select.h
+++ b/source/blender/python/gpu/gpu_py_select.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_shader.c b/source/blender/python/gpu/gpu_py_shader.c
index 1bdf9766c1b4a89d08769f056412bb2583f157eb..1a53ccd66869f6f05d875be55ea4461768e07f91 100644
--- a/source/blender/python/gpu/gpu_py_shader.c
+++ b/source/blender/python/gpu/gpu_py_shader.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_shader.h b/source/blender/python/gpu/gpu_py_shader.h
index b15caa3e66ce98f1c9dbd77d4f7c05d70f0bf71c..eb4810efeac0158b63d70ab39308dcc958d96e07 100644
--- a/source/blender/python/gpu/gpu_py_shader.h
+++ b/source/blender/python/gpu/gpu_py_shader.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_state.c b/source/blender/python/gpu/gpu_py_state.c
index 26905c87de2d58026d2654f03def39ae9167fe5a..2c5012216f20b483ddb0d364c10d0acc6b5b52f8 100644
--- a/source/blender/python/gpu/gpu_py_state.c
+++ b/source/blender/python/gpu/gpu_py_state.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_state.h b/source/blender/python/gpu/gpu_py_state.h
index 415c5ede8224d8b9fb2812c3d3525b77ae12650c..db8c97429b1fa1c845ed613ec41f58db465bec19 100644
--- a/source/blender/python/gpu/gpu_py_state.h
+++ b/source/blender/python/gpu/gpu_py_state.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_texture.c b/source/blender/python/gpu/gpu_py_texture.c
index 66b9cf5e86e0dd8a5c59e36ba82b12092b07e74f..ab0384238781baba36e9ca73f84a35e145ec22e5 100644
--- a/source/blender/python/gpu/gpu_py_texture.c
+++ b/source/blender/python/gpu/gpu_py_texture.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_texture.h b/source/blender/python/gpu/gpu_py_texture.h
index 8423d0e6804720e72271c580a2e301372d3cdbe7..79ef09758265400a290cc63ac250bbac15586ef3 100644
--- a/source/blender/python/gpu/gpu_py_texture.h
+++ b/source/blender/python/gpu/gpu_py_texture.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_types.c b/source/blender/python/gpu/gpu_py_types.c
index a8787cf5c7f1cdcbd72d4dc8b33823ae8a53a3cc..6dff70ad5304cf8c93a30eb2164c0fb804aacbec 100644
--- a/source/blender/python/gpu/gpu_py_types.c
+++ b/source/blender/python/gpu/gpu_py_types.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_types.h b/source/blender/python/gpu/gpu_py_types.h
index eb72c04d53e5b16551e1aed367d377039ce747ce..5e86427e1290c806391047577bf1303c243c93a4 100644
--- a/source/blender/python/gpu/gpu_py_types.h
+++ b/source/blender/python/gpu/gpu_py_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_uniformbuffer.c b/source/blender/python/gpu/gpu_py_uniformbuffer.c
index 616ef65a5d163c821e6ad2fd9e2af6546ce53efd..d3d9ed9b6daf1df3428f574761bcac9c8293f09e 100644
--- a/source/blender/python/gpu/gpu_py_uniformbuffer.c
+++ b/source/blender/python/gpu/gpu_py_uniformbuffer.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_uniformbuffer.h b/source/blender/python/gpu/gpu_py_uniformbuffer.h
index 75d6d5e2160badeebee31a3c5004410c2e087bf4..b1a920beea6da3dd1ef2547475d633684cb5aacc 100644
--- a/source/blender/python/gpu/gpu_py_uniformbuffer.h
+++ b/source/blender/python/gpu/gpu_py_uniformbuffer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_vertex_buffer.c b/source/blender/python/gpu/gpu_py_vertex_buffer.c
index bb762f9fe3312cd180e4691ded3126d99679ed99..499af7df9d737e1244c1488699b0b9848501196a 100644
--- a/source/blender/python/gpu/gpu_py_vertex_buffer.c
+++ b/source/blender/python/gpu/gpu_py_vertex_buffer.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_vertex_buffer.h b/source/blender/python/gpu/gpu_py_vertex_buffer.h
index d105faf9bc1718e8637237159fdaf057791302b3..892886010bcc46f12cbc70db0979e11f321f4cd3 100644
--- a/source/blender/python/gpu/gpu_py_vertex_buffer.h
+++ b/source/blender/python/gpu/gpu_py_vertex_buffer.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_vertex_format.c b/source/blender/python/gpu/gpu_py_vertex_format.c
index c344429576a13e221e11150d9706bd35acdafcf4..402112d20a3fc1ac79860e1287ee679cc8376d07 100644
--- a/source/blender/python/gpu/gpu_py_vertex_format.c
+++ b/source/blender/python/gpu/gpu_py_vertex_format.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/gpu/gpu_py_vertex_format.h b/source/blender/python/gpu/gpu_py_vertex_format.h
index 6c99d13cf03c854b6998280462234408a128febf..1d2722b8a49b8e9082f7b9562fd10773b67b39dd 100644
--- a/source/blender/python/gpu/gpu_py_vertex_format.h
+++ b/source/blender/python/gpu/gpu_py_vertex_format.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bpygpu
diff --git a/source/blender/python/intern/CMakeLists.txt b/source/blender/python/intern/CMakeLists.txt
index 2be2105d327635cea15d791678752c6882f32cea..5fa1093a21eae0e9f97a3d9b838ba31edb9c41b5 100644
--- a/source/blender/python/intern/CMakeLists.txt
+++ b/source/blender/python/intern/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   ..
diff --git a/source/blender/python/intern/bpy.c b/source/blender/python/intern/bpy.c
index c792773272b765ff15596d7e4f5c4648b482a8ba..3cef1b2e9be0dc7949a3ecb276b658018179ff49 100644
--- a/source/blender/python/intern/bpy.c
+++ b/source/blender/python/intern/bpy.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy.h b/source/blender/python/intern/bpy.h
index b77a3e9fb7d0dbb56f4c7949e7f8532681fe3ffd..bbf699c1f485e8e6b59d54058c76a8f4fc1b37a4 100644
--- a/source/blender/python/intern/bpy.h
+++ b/source/blender/python/intern/bpy.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app.c b/source/blender/python/intern/bpy_app.c
index a89d97bb40c77363ba1b5b6d51388c95b3c29cdc..84fe27197f95bebd125b852703d7b640fb77acb0 100644
--- a/source/blender/python/intern/bpy_app.c
+++ b/source/blender/python/intern/bpy_app.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app.h b/source/blender/python/intern/bpy_app.h
index 0e5b67475435ca78cf816bf2a255b0e96c35f846..b5ccd897784a72c80a353197be1b9150c2978a27 100644
--- a/source/blender/python/intern/bpy_app.h
+++ b/source/blender/python/intern/bpy_app.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_alembic.c b/source/blender/python/intern/bpy_app_alembic.c
index bb218c57d060772c0452a2795e1b5492de5606ec..abecd3d8c1a10c6a6337af0f5c13c7b42566651a 100644
--- a/source/blender/python/intern/bpy_app_alembic.c
+++ b/source/blender/python/intern/bpy_app_alembic.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_alembic.h b/source/blender/python/intern/bpy_app_alembic.h
index 4288b556172cdf66e997c9ed106c5ec8524995f7..8b125f914943901d11f9e14cdf6cab40c7802b91 100644
--- a/source/blender/python/intern/bpy_app_alembic.h
+++ b/source/blender/python/intern/bpy_app_alembic.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_build_options.c b/source/blender/python/intern/bpy_app_build_options.c
index 676d1b8045ff0461fb9f8fef10fcc8699c95cf71..beb787534066b03e312871334df40bc0dfb8ef6c 100644
--- a/source/blender/python/intern/bpy_app_build_options.c
+++ b/source/blender/python/intern/bpy_app_build_options.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_build_options.h b/source/blender/python/intern/bpy_app_build_options.h
index 390e3409fb897a31756e8b1933f08b19691f7976..8e758f7cb6fd99d4f90d2cded42b9ffca86b2142 100644
--- a/source/blender/python/intern/bpy_app_build_options.h
+++ b/source/blender/python/intern/bpy_app_build_options.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_ffmpeg.c b/source/blender/python/intern/bpy_app_ffmpeg.c
index 5f277b0ef07da6bc8e3f97bccec02d9ea37d5bc6..c14b6672e4db09eeafbb7690a9b46a012b1fae37 100644
--- a/source/blender/python/intern/bpy_app_ffmpeg.c
+++ b/source/blender/python/intern/bpy_app_ffmpeg.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_ffmpeg.h b/source/blender/python/intern/bpy_app_ffmpeg.h
index b189592e03e7a190dfda2bc072414e78e237e2e4..ece8f15cb55d47cd2178ec4ca729cd323593f9b5 100644
--- a/source/blender/python/intern/bpy_app_ffmpeg.h
+++ b/source/blender/python/intern/bpy_app_ffmpeg.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_handlers.c b/source/blender/python/intern/bpy_app_handlers.c
index d66643c5d613b093bb5580c46309dc040b80dc40..3155f3a63bd027acbf0cb866b0c0004176da46e9 100644
--- a/source/blender/python/intern/bpy_app_handlers.c
+++ b/source/blender/python/intern/bpy_app_handlers.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_handlers.h b/source/blender/python/intern/bpy_app_handlers.h
index eb8e85fc96ee5f6e0059850cf06e9ba3333da2f2..62656ecce4d41c2d56eee210217c701d5f7b8af3 100644
--- a/source/blender/python/intern/bpy_app_handlers.h
+++ b/source/blender/python/intern/bpy_app_handlers.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_icons.c b/source/blender/python/intern/bpy_app_icons.c
index acd809fb8d5dda661dba821ba7a77c19a421072d..48e3072008c0a33fe078e582b4fb52bfbf6b4222 100644
--- a/source/blender/python/intern/bpy_app_icons.c
+++ b/source/blender/python/intern/bpy_app_icons.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_icons.h b/source/blender/python/intern/bpy_app_icons.h
index b0dcbe4b0ea745ed26d87565e6d8f018b5a7d649..29dc909882d82c032e73702e41f8be3ccc94876d 100644
--- a/source/blender/python/intern/bpy_app_icons.h
+++ b/source/blender/python/intern/bpy_app_icons.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_ocio.c b/source/blender/python/intern/bpy_app_ocio.c
index 8ce87bd0150805a20057429b2f7c5987a96eb632..3f28d05830bda7dc5b2bcb31405c82282a26f031 100644
--- a/source/blender/python/intern/bpy_app_ocio.c
+++ b/source/blender/python/intern/bpy_app_ocio.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_ocio.h b/source/blender/python/intern/bpy_app_ocio.h
index bc4529a962c30030d6ebbb2b22c6fe1304df4ea7..041ccffb0c16aa7add0d6f3219fe1774d02d985d 100644
--- a/source/blender/python/intern/bpy_app_ocio.h
+++ b/source/blender/python/intern/bpy_app_ocio.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_oiio.c b/source/blender/python/intern/bpy_app_oiio.c
index 8436296680bb7681543da1c4a0e8d7cd75c506d8..ec0bc31c8449e0f08e35ea1fecf00546eb1e3cc3 100644
--- a/source/blender/python/intern/bpy_app_oiio.c
+++ b/source/blender/python/intern/bpy_app_oiio.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_oiio.h b/source/blender/python/intern/bpy_app_oiio.h
index 47092899eec06616983d1d3bef8cc028458cb892..0c53f0116dfaa418f4f0d56f61c77a6184495a3a 100644
--- a/source/blender/python/intern/bpy_app_oiio.h
+++ b/source/blender/python/intern/bpy_app_oiio.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_opensubdiv.c b/source/blender/python/intern/bpy_app_opensubdiv.c
index 635013a1f9e543b4f80fa7ac1ffac6ebd9aac66d..61250147d6720ac12eada898668956d79626574d 100644
--- a/source/blender/python/intern/bpy_app_opensubdiv.c
+++ b/source/blender/python/intern/bpy_app_opensubdiv.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_opensubdiv.h b/source/blender/python/intern/bpy_app_opensubdiv.h
index e18c827e6d85460796b2eb043d9e9a5dc591c8d9..08ffc80543ff40044a7597d61562286161e6f1ce 100644
--- a/source/blender/python/intern/bpy_app_opensubdiv.h
+++ b/source/blender/python/intern/bpy_app_opensubdiv.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_openvdb.c b/source/blender/python/intern/bpy_app_openvdb.c
index 20a61ba170a454e10589f05f7b0d8deb3b8c20a6..6cc476cebccbe97c59c34ac311e2e21b082be1d3 100644
--- a/source/blender/python/intern/bpy_app_openvdb.c
+++ b/source/blender/python/intern/bpy_app_openvdb.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_openvdb.h b/source/blender/python/intern/bpy_app_openvdb.h
index ab73d5614122096f9f92d0b2be29cc087fac5ddf..6475b27b12ab1c506cf2bc07ff345f6b2efbee1e 100644
--- a/source/blender/python/intern/bpy_app_openvdb.h
+++ b/source/blender/python/intern/bpy_app_openvdb.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_sdl.c b/source/blender/python/intern/bpy_app_sdl.c
index e45e73fb4de2f10e41ea1d02dc6458a6410b373d..ff659cf43c4b23f2bbdea506d23da800d6b2baef 100644
--- a/source/blender/python/intern/bpy_app_sdl.c
+++ b/source/blender/python/intern/bpy_app_sdl.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_sdl.h b/source/blender/python/intern/bpy_app_sdl.h
index b1d349c2a59e2741b519911404954de30e8b749d..76ff7e8556baf7b1f868770180c9483622699e64 100644
--- a/source/blender/python/intern/bpy_app_sdl.h
+++ b/source/blender/python/intern/bpy_app_sdl.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_timers.c b/source/blender/python/intern/bpy_app_timers.c
index af299952b72712e29e70cc513642cb19891c23be..1ef3fabacf594743a6bd867e7a07c569b1205c4c 100644
--- a/source/blender/python/intern/bpy_app_timers.c
+++ b/source/blender/python/intern/bpy_app_timers.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_timers.h b/source/blender/python/intern/bpy_app_timers.h
index 9e62541c83ad128796bfce3b27f005c8d96453af..3e4e6a9fd17164112bccd1022bc2eef05bdc3065 100644
--- a/source/blender/python/intern/bpy_app_timers.h
+++ b/source/blender/python/intern/bpy_app_timers.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_translations.c b/source/blender/python/intern/bpy_app_translations.c
index 4fa71c0c97625b26f8128b6d0d6dac558dc3dcfc..152c871c9beb15243492cf6aeb370537482882c5 100644
--- a/source/blender/python/intern/bpy_app_translations.c
+++ b/source/blender/python/intern/bpy_app_translations.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_translations.h b/source/blender/python/intern/bpy_app_translations.h
index 090cab5917cc86bf8bff955b3a39b6836fcaa1c0..4a59da12bcaddf7bf7ec22f026f76b2deb5ae195 100644
--- a/source/blender/python/intern/bpy_app_translations.h
+++ b/source/blender/python/intern/bpy_app_translations.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_usd.c b/source/blender/python/intern/bpy_app_usd.c
index 72287d45b9351e98aaa81a2e03580ac7f1b52659..811a4e4c085f2de5f6ea8f136030e9ee9b226932 100644
--- a/source/blender/python/intern/bpy_app_usd.c
+++ b/source/blender/python/intern/bpy_app_usd.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_app_usd.h b/source/blender/python/intern/bpy_app_usd.h
index 2801408c2aa0d5b8eb4aaaebe26148562fb17a62..5740713c9baf6f23b3d9860c4bf576037a15f6fc 100644
--- a/source/blender/python/intern/bpy_app_usd.h
+++ b/source/blender/python/intern/bpy_app_usd.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_capi_utils.c b/source/blender/python/intern/bpy_capi_utils.c
index ed01132ed4e42e3a6cf45aa5f6e9bef8af77f0be..742c04de3d73a13b042c80b82d9e99026bbfdcf3 100644
--- a/source/blender/python/intern/bpy_capi_utils.c
+++ b/source/blender/python/intern/bpy_capi_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_capi_utils.h b/source/blender/python/intern/bpy_capi_utils.h
index 0889dec36c8544d5c93696db9d20831a05c5b8e5..4a2e5fdebb70e65b256ce0e21247170239949817 100644
--- a/source/blender/python/intern/bpy_capi_utils.h
+++ b/source/blender/python/intern/bpy_capi_utils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_driver.c b/source/blender/python/intern/bpy_driver.c
index bd1f3cd301fe129db5d75237f967cd6248739890..61bb183068dd68876af8fed4df7a232ebbccc92f 100644
--- a/source/blender/python/intern/bpy_driver.c
+++ b/source/blender/python/intern/bpy_driver.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_driver.h b/source/blender/python/intern/bpy_driver.h
index b7bb0f846e88475e3aa42178b2edd2b822d12c0d..301c6b3662eec6ee5a032e3f28385195478b52ab 100644
--- a/source/blender/python/intern/bpy_driver.h
+++ b/source/blender/python/intern/bpy_driver.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_gizmo_wrap.c b/source/blender/python/intern/bpy_gizmo_wrap.c
index 8d9b9e8658997476d0bff573a738603c03f51fcf..88cddac659fb30835e2d859d61841492bdcee4ba 100644
--- a/source/blender/python/intern/bpy_gizmo_wrap.c
+++ b/source/blender/python/intern/bpy_gizmo_wrap.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_gizmo_wrap.h b/source/blender/python/intern/bpy_gizmo_wrap.h
index 86b56ab2bd991c56131b94556be6b261de31a596..6a876747e2206f013c03773fc4480e375cea0419 100644
--- a/source/blender/python/intern/bpy_gizmo_wrap.h
+++ b/source/blender/python/intern/bpy_gizmo_wrap.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_interface.c b/source/blender/python/intern/bpy_interface.c
index cbbf2a3cb4388f83e06d2504604b8303e150b8e2..e05cfb771c1ca97ba97aea9d9be185e2428eae3f 100644
--- a/source/blender/python/intern/bpy_interface.c
+++ b/source/blender/python/intern/bpy_interface.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_interface_atexit.c b/source/blender/python/intern/bpy_interface_atexit.c
index f92a48eb597d2f3962aedd19bfc7f017ac3450bf..1ba3ab6a40b4774bbef169bbe7ad83785eb42c42 100644
--- a/source/blender/python/intern/bpy_interface_atexit.c
+++ b/source/blender/python/intern/bpy_interface_atexit.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_interface_run.c b/source/blender/python/intern/bpy_interface_run.c
index 79744090cc38f2e01fdd7d4d7de5a521e0592b8b..01db0efecfde6ddf3ffdffcb4a00b608fbdf92e5 100644
--- a/source/blender/python/intern/bpy_interface_run.c
+++ b/source/blender/python/intern/bpy_interface_run.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_intern_string.c b/source/blender/python/intern/bpy_intern_string.c
index 1f3148ca8090e91f3117736e5acbf62649bbc818..1cf8f3b65a06fbeee85b5edd2b41438d491e1a99 100644
--- a/source/blender/python/intern/bpy_intern_string.c
+++ b/source/blender/python/intern/bpy_intern_string.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_intern_string.h b/source/blender/python/intern/bpy_intern_string.h
index 0c75b723fb884d1a8c3c741d2182f946c53bcfa1..1d74e8c31c5ad2086be51a9c91ad680e08a499c0 100644
--- a/source/blender/python/intern/bpy_intern_string.h
+++ b/source/blender/python/intern/bpy_intern_string.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/python/intern/bpy_library.h b/source/blender/python/intern/bpy_library.h
index fbcf111e37d38c0110d2bcb403d8c6a9062d5dc6..b911a0dab5b1cdf6f4ea922fb474409fb4341a83 100644
--- a/source/blender/python/intern/bpy_library.h
+++ b/source/blender/python/intern/bpy_library.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_library_load.c b/source/blender/python/intern/bpy_library_load.c
index fe279c0b9400f42b10404b5a7752ec6a2394f100..e3a1ca166600baed0f9de36b8450f6e91983646b 100644
--- a/source/blender/python/intern/bpy_library_load.c
+++ b/source/blender/python/intern/bpy_library_load.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_library_write.c b/source/blender/python/intern/bpy_library_write.c
index f26f305cca85b3ca58f329cf686f33480c84aaad..a3f2f27a45292e4fb4fe8a97c17cae50a5f91263 100644
--- a/source/blender/python/intern/bpy_library_write.c
+++ b/source/blender/python/intern/bpy_library_write.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_msgbus.c b/source/blender/python/intern/bpy_msgbus.c
index 9e165bbf1c0f1153081dc40439623c57930d2fc6..88740762ad8bcf8f352ed9a9eea91808ce4b42b9 100644
--- a/source/blender/python/intern/bpy_msgbus.c
+++ b/source/blender/python/intern/bpy_msgbus.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_msgbus.h b/source/blender/python/intern/bpy_msgbus.h
index 8d4846fd7071f2fd5158156ec6c9d603952bbd83..344bb895de1eb959111ab180298e01aa6eab0ef5 100644
--- a/source/blender/python/intern/bpy_msgbus.h
+++ b/source/blender/python/intern/bpy_msgbus.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_operator.c b/source/blender/python/intern/bpy_operator.c
index a86c2e3a35ea7c6949e37a0f54d3b22fc4c6bb3f..61de15b07f590ee803aedda84f41995137862559 100644
--- a/source/blender/python/intern/bpy_operator.c
+++ b/source/blender/python/intern/bpy_operator.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_operator.h b/source/blender/python/intern/bpy_operator.h
index 453b3c3d6d47111d71a1267d26af64b0f4b6a2ff..65a490b37a8df8576b919ca72d5bd0f71f34630e 100644
--- a/source/blender/python/intern/bpy_operator.h
+++ b/source/blender/python/intern/bpy_operator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_operator_wrap.c b/source/blender/python/intern/bpy_operator_wrap.c
index bee64f5de2c533ddbe36e78b4bf378061f2d68d1..03be71a7ef8565a058d1ccaee8d41d48e9042ec2 100644
--- a/source/blender/python/intern/bpy_operator_wrap.c
+++ b/source/blender/python/intern/bpy_operator_wrap.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_operator_wrap.h b/source/blender/python/intern/bpy_operator_wrap.h
index 41deb06814b02b23ba08f76496c893acbd55e459..de3779332da711dbf7d6ecb8fb08617163a729f2 100644
--- a/source/blender/python/intern/bpy_operator_wrap.h
+++ b/source/blender/python/intern/bpy_operator_wrap.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_path.c b/source/blender/python/intern/bpy_path.c
index 2ac59a694ecb22d6afb6469130e4adc9bbecd6dc..fbb478173895056f7ec2797427195279ac8f1375 100644
--- a/source/blender/python/intern/bpy_path.c
+++ b/source/blender/python/intern/bpy_path.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_path.h b/source/blender/python/intern/bpy_path.h
index 3e25cb26288c625e0c2208151def33d6c6b5cac6..d63f92bd47d129f9fd4a702ed74b8490fa9574b3 100644
--- a/source/blender/python/intern/bpy_path.h
+++ b/source/blender/python/intern/bpy_path.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_props.c b/source/blender/python/intern/bpy_props.c
index fe7183441d1c265471d9fba5428e76b20c025490..ab25add3890515bef6bc549c89410de98341cc9f 100644
--- a/source/blender/python/intern/bpy_props.c
+++ b/source/blender/python/intern/bpy_props.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_props.h b/source/blender/python/intern/bpy_props.h
index 9d7395409190e28d3523f58d33c016f9567946eb..aa5debfaeb25695d6263d02e96c97ae5662a51ac 100644
--- a/source/blender/python/intern/bpy_props.h
+++ b/source/blender/python/intern/bpy_props.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna.c b/source/blender/python/intern/bpy_rna.c
index a79a0ed32bfab6c13b8ffaa29d1f775acef26534..3654dbbcf294e44417e6d2f4b145c16197a06e7c 100644
--- a/source/blender/python/intern/bpy_rna.c
+++ b/source/blender/python/intern/bpy_rna.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna.h b/source/blender/python/intern/bpy_rna.h
index b131aed6d23b4a89bdb609547efd21a563a7c8d6..573daac6e955697b4e7333ea1128c4797b823e9c 100644
--- a/source/blender/python/intern/bpy_rna.h
+++ b/source/blender/python/intern/bpy_rna.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_anim.c b/source/blender/python/intern/bpy_rna_anim.c
index 9a6339c0a8914a0f5d46555b6ccee4974af750d5..f1538a5063f8741a8fc83b086ce0c80c89d302e1 100644
--- a/source/blender/python/intern/bpy_rna_anim.c
+++ b/source/blender/python/intern/bpy_rna_anim.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_anim.h b/source/blender/python/intern/bpy_rna_anim.h
index 7c840e616b1f2621dc39260c6ce0c54b309df5b0..e6da12ee73e7c86b911973a09d9d5d5ca9a362f0 100644
--- a/source/blender/python/intern/bpy_rna_anim.h
+++ b/source/blender/python/intern/bpy_rna_anim.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/python/intern/bpy_rna_array.c b/source/blender/python/intern/bpy_rna_array.c
index f3b1e357ebc8778fd21864cea594b18927506773..f5bec2472500a414a490e6bcccbfab4b34fe50e0 100644
--- a/source/blender/python/intern/bpy_rna_array.c
+++ b/source/blender/python/intern/bpy_rna_array.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_callback.c b/source/blender/python/intern/bpy_rna_callback.c
index 16ea4bf3e5eaea5f197248b916f31472d54bdaa7..1e1fa13f39ed30049ca4e01d23a327a632e0be2d 100644
--- a/source/blender/python/intern/bpy_rna_callback.c
+++ b/source/blender/python/intern/bpy_rna_callback.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_callback.h b/source/blender/python/intern/bpy_rna_callback.h
index 6c971ff9528a97e498f8bb3a5ee164c0fd65cab1..577916bbeea943f15fc143f9382c72a5605579a9 100644
--- a/source/blender/python/intern/bpy_rna_callback.h
+++ b/source/blender/python/intern/bpy_rna_callback.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/python/intern/bpy_rna_data.c b/source/blender/python/intern/bpy_rna_data.c
index c781fe4a4e7d3b9a8f192601d99af07776ce8080..18aa9d130200025fc1d2e351e7c8978f310a62a0 100644
--- a/source/blender/python/intern/bpy_rna_data.c
+++ b/source/blender/python/intern/bpy_rna_data.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_data.h b/source/blender/python/intern/bpy_rna_data.h
index b1d226d9dc4309ce266c3eb79f8c4ac14faa83a6..e31616f07cace29d8969e339151363f9e73c1a38 100644
--- a/source/blender/python/intern/bpy_rna_data.h
+++ b/source/blender/python/intern/bpy_rna_data.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_driver.c b/source/blender/python/intern/bpy_rna_driver.c
index 0bb8b1ba3e1d1f034915ac5817f50fba0342ff9c..a74381eb5710f8783e0912a056aa8442e9d236a3 100644
--- a/source/blender/python/intern/bpy_rna_driver.c
+++ b/source/blender/python/intern/bpy_rna_driver.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_driver.h b/source/blender/python/intern/bpy_rna_driver.h
index e34c7e4597c17d86e579daafc2f5031ff365e35f..238fed0f891cdeaf5178eaa48c85a916ee59716a 100644
--- a/source/blender/python/intern/bpy_rna_driver.h
+++ b/source/blender/python/intern/bpy_rna_driver.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/python/intern/bpy_rna_gizmo.c b/source/blender/python/intern/bpy_rna_gizmo.c
index e769fe7f4c22e73d61c965a158d5c9f8d822486f..7119685cbe8bff3a76333b08b42e862ea30d2964 100644
--- a/source/blender/python/intern/bpy_rna_gizmo.c
+++ b/source/blender/python/intern/bpy_rna_gizmo.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_gizmo.h b/source/blender/python/intern/bpy_rna_gizmo.h
index e4ac43bfe6c55b26d139e0a9eda7c748263cfe5f..3b3e47bf7cb7752c634c94af4b398fbc9057400f 100644
--- a/source/blender/python/intern/bpy_rna_gizmo.h
+++ b/source/blender/python/intern/bpy_rna_gizmo.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_id_collection.c b/source/blender/python/intern/bpy_rna_id_collection.c
index 11e3ad0bcf4930ff20d7e05e4b84e451d6dd5fb2..792e33f03a5e059a83bf11e3b83f21c427f582eb 100644
--- a/source/blender/python/intern/bpy_rna_id_collection.c
+++ b/source/blender/python/intern/bpy_rna_id_collection.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_id_collection.h b/source/blender/python/intern/bpy_rna_id_collection.h
index 320a9e66ff8dc417c54116621330efff643658ed..d06addc24e3d8afd83809941dea73101d57785bb 100644
--- a/source/blender/python/intern/bpy_rna_id_collection.h
+++ b/source/blender/python/intern/bpy_rna_id_collection.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_operator.c b/source/blender/python/intern/bpy_rna_operator.c
index d24e2a77a757aebe8557f490d698aaa4109b9335..fd6cc93ed32ee102a1456c9b67e911d8fe9ecda2 100644
--- a/source/blender/python/intern/bpy_rna_operator.c
+++ b/source/blender/python/intern/bpy_rna_operator.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_operator.h b/source/blender/python/intern/bpy_rna_operator.h
index 8040d8a492a19f0c2ff1d268d8e5269678bf39b0..63dc88a9de39748cff6c8ffc01ff9bfdfc277ae0 100644
--- a/source/blender/python/intern/bpy_rna_operator.h
+++ b/source/blender/python/intern/bpy_rna_operator.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_types_capi.c b/source/blender/python/intern/bpy_rna_types_capi.c
index 2f6e197d1e297a60511865766c90122a40172e6e..5ede3612b47f3a9a354dec4c6a00100e46df37b7 100644
--- a/source/blender/python/intern/bpy_rna_types_capi.c
+++ b/source/blender/python/intern/bpy_rna_types_capi.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_types_capi.h b/source/blender/python/intern/bpy_rna_types_capi.h
index eb8dd14d888d318d6b5ebffc8c345a1dabac69ba..1af7953c3b1af4478c61dc0c812d2fdd86c3aa80 100644
--- a/source/blender/python/intern/bpy_rna_types_capi.h
+++ b/source/blender/python/intern/bpy_rna_types_capi.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_ui.c b/source/blender/python/intern/bpy_rna_ui.c
index e3b556c2792bc6eb05cea180f803e2ca1fc82dfa..01a5a4a3729ebc76f003642a04eb6754bd261193 100644
--- a/source/blender/python/intern/bpy_rna_ui.c
+++ b/source/blender/python/intern/bpy_rna_ui.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_rna_ui.h b/source/blender/python/intern/bpy_rna_ui.h
index bd2e87aae40174452b3477a328fe80585de8163d..1e70516f384080188bb71fd9e9b4cfe03267268f 100644
--- a/source/blender/python/intern/bpy_rna_ui.h
+++ b/source/blender/python/intern/bpy_rna_ui.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_traceback.c b/source/blender/python/intern/bpy_traceback.c
index 00b414e027efa06429539cba69cc27c81b6856a3..13af254c286e962398a6f7dd63243cfeb4115f04 100644
--- a/source/blender/python/intern/bpy_traceback.c
+++ b/source/blender/python/intern/bpy_traceback.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_traceback.h b/source/blender/python/intern/bpy_traceback.h
index 26f6a5744398f7135df0cb1863e94de0166ce720..99e032f3594cf3c42cae82c9fe1301207dcdf960 100644
--- a/source/blender/python/intern/bpy_traceback.h
+++ b/source/blender/python/intern/bpy_traceback.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_utils_previews.c b/source/blender/python/intern/bpy_utils_previews.c
index 6a46d2a1a963e91679f350365a613904844c856d..6c7e835fed8b45aa8023c7733828992a13230851 100644
--- a/source/blender/python/intern/bpy_utils_previews.c
+++ b/source/blender/python/intern/bpy_utils_previews.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_utils_previews.h b/source/blender/python/intern/bpy_utils_previews.h
index dbe74f619a9cb4c27274a4adb04f82b51b6a6e28..baf53211c78a44ede9f7f4a4c1d47034ab2c3ab7 100644
--- a/source/blender/python/intern/bpy_utils_previews.h
+++ b/source/blender/python/intern/bpy_utils_previews.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_utils_units.c b/source/blender/python/intern/bpy_utils_units.c
index 62f5a17c4dd1f5052e2ddca97a4961135479ad57..6f080dcb17871c5eacaa0b4edbf83b3c502c8bac 100644
--- a/source/blender/python/intern/bpy_utils_units.c
+++ b/source/blender/python/intern/bpy_utils_units.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/bpy_utils_units.h b/source/blender/python/intern/bpy_utils_units.h
index 7a135bc61632340e0aab044e7c1b0a8e2e15ce41..59cc41000ca727ad3e07038b6ea5ec630d2395ee 100644
--- a/source/blender/python/intern/bpy_utils_units.h
+++ b/source/blender/python/intern/bpy_utils_units.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/intern/stubs.c b/source/blender/python/intern/stubs.c
index 56ee36086c4bef35a94646bb6c7fccb3507bd32b..c29f9188eeae775a7c9d601461db48fd8265dcf9 100644
--- a/source/blender/python/intern/stubs.c
+++ b/source/blender/python/intern/stubs.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup pythonintern
diff --git a/source/blender/python/mathutils/CMakeLists.txt b/source/blender/python/mathutils/CMakeLists.txt
index e34432f0c5409bbec4ddb863a6627a0b5aabb5ed..1be9b56862673aae4558ed14f5ff7509a35c42e2 100644
--- a/source/blender/python/mathutils/CMakeLists.txt
+++ b/source/blender/python/mathutils/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 set(INC
   .
diff --git a/source/blender/python/mathutils/mathutils.c b/source/blender/python/mathutils/mathutils.c
index 6eee9ceebb87810fa402accbf43657bc1333a254..89fb89cfd4183319667f5c0a6b60195b432377ec 100644
--- a/source/blender/python/mathutils/mathutils.c
+++ b/source/blender/python/mathutils/mathutils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pymathutils
diff --git a/source/blender/python/mathutils/mathutils.h b/source/blender/python/mathutils/mathutils.h
index d73d2afe69bd326a9d75ad752c9d85066af85d6b..5831489ef5b7188c9203643294695b1c9d81e3d7 100644
--- a/source/blender/python/mathutils/mathutils.h
+++ b/source/blender/python/mathutils/mathutils.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/python/mathutils/mathutils_Color.c b/source/blender/python/mathutils/mathutils_Color.c
index 13d712bddb046ef90c9996aaff560c7b290cbd79..8b126639f10c6c23087e0aa8340ea05382db4f26 100644
--- a/source/blender/python/mathutils/mathutils_Color.c
+++ b/source/blender/python/mathutils/mathutils_Color.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pymathutils
diff --git a/source/blender/python/mathutils/mathutils_Color.h b/source/blender/python/mathutils/mathutils_Color.h
index 40de26f01ea32072d8681ac3b21163b7d13a8af1..11a936b7bc81ca5e58f65b4609b0351849cde033 100644
--- a/source/blender/python/mathutils/mathutils_Color.h
+++ b/source/blender/python/mathutils/mathutils_Color.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pymathutils
diff --git a/source/blender/python/mathutils/mathutils_Euler.c b/source/blender/python/mathutils/mathutils_Euler.c
index 1033d186fca828de0911b3c1f443f2574269f377..909c19e8cd2950269b72bd0043c9ca8527a81bb0 100644
--- a/source/blender/python/mathutils/mathutils_Euler.c
+++ b/source/blender/python/mathutils/mathutils_Euler.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pymathutils
diff --git a/source/blender/python/mathutils/mathutils_Euler.h b/source/blender/python/mathutils/mathutils_Euler.h
index 453a3b3736e677c162dd3ee3b13df9cd4216b54b..4438ee380af16f91659fc2108894327f3272655a 100644
--- a/source/blender/python/mathutils/mathutils_Euler.h
+++ b/source/blender/python/mathutils/mathutils_Euler.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/python/mathutils/mathutils_Matrix.c b/source/blender/python/mathutils/mathutils_Matrix.c
index 4396e2f9c7b8421be32801958cd8680037f2b058..b8eaf1486ab79ff20257b9e06558e673e19e40ee 100644
--- a/source/blender/python/mathutils/mathutils_Matrix.c
+++ b/source/blender/python/mathutils/mathutils_Matrix.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pymathutils
diff --git a/source/blender/python/mathutils/mathutils_Matrix.h b/source/blender/python/mathutils/mathutils_Matrix.h
index 3067c5417b91bf4561406b1d681041dd234ecc90..6dd1640b3bfadea854f6d2d953cee71b9c67aa98 100644
--- a/source/blender/python/mathutils/mathutils_Matrix.h
+++ b/source/blender/python/mathutils/mathutils_Matrix.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pymathutils
diff --git a/source/blender/python/mathutils/mathutils_Quaternion.c b/source/blender/python/mathutils/mathutils_Quaternion.c
index 8c333413d7429b4ac1e111f95c5df196664bcbd5..f0ba125e768b647393739e44417a7677309fcee8 100644
--- a/source/blender/python/mathutils/mathutils_Quaternion.c
+++ b/source/blender/python/mathutils/mathutils_Quaternion.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pymathutils
diff --git a/source/blender/python/mathutils/mathutils_Quaternion.h b/source/blender/python/mathutils/mathutils_Quaternion.h
index 7d20558939e392b2b79dd50e8c160b27413c4b43..96e3d2e005528877dad182aacd84d63b00c1be9c 100644
--- a/source/blender/python/mathutils/mathutils_Quaternion.h
+++ b/source/blender/python/mathutils/mathutils_Quaternion.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/python/mathutils/mathutils_Vector.c b/source/blender/python/mathutils/mathutils_Vector.c
index daaf3b3da2679bc509550f30d936a90ffafa143e..080a1e7fbdd2da719dfdea0047e4e632434da731 100644
--- a/source/blender/python/mathutils/mathutils_Vector.c
+++ b/source/blender/python/mathutils/mathutils_Vector.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pymathutils
diff --git a/source/blender/python/mathutils/mathutils_Vector.h b/source/blender/python/mathutils/mathutils_Vector.h
index 50609e51b0a32e9a240888bbf7d0c0d055f9a0f3..422050c8742195d57e1fbacd9750cf2af3c2b3e3 100644
--- a/source/blender/python/mathutils/mathutils_Vector.h
+++ b/source/blender/python/mathutils/mathutils_Vector.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pymathutils
diff --git a/source/blender/python/mathutils/mathutils_bvhtree.c b/source/blender/python/mathutils/mathutils_bvhtree.c
index 588d3753eabb60af876f7967e1a542cec016b19f..8adde14d82f43baf954a9ce12eb1e701c45c0b27 100644
--- a/source/blender/python/mathutils/mathutils_bvhtree.c
+++ b/source/blender/python/mathutils/mathutils_bvhtree.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup mathutils
diff --git a/source/blender/python/mathutils/mathutils_bvhtree.h b/source/blender/python/mathutils/mathutils_bvhtree.h
index 82b09f11e5ec205da4cc057a3120639959220edc..1c9f7837873252ffd0337a7933a42a3af6aef47a 100644
--- a/source/blender/python/mathutils/mathutils_bvhtree.h
+++ b/source/blender/python/mathutils/mathutils_bvhtree.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup mathutils
diff --git a/source/blender/python/mathutils/mathutils_geometry.c b/source/blender/python/mathutils/mathutils_geometry.c
index b8244efbee28846f4adc1d3e59259770b2565a96..84ba2ce40316f3d74be58cfb45ef06230cd6286b 100644
--- a/source/blender/python/mathutils/mathutils_geometry.c
+++ b/source/blender/python/mathutils/mathutils_geometry.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pymathutils
diff --git a/source/blender/python/mathutils/mathutils_geometry.h b/source/blender/python/mathutils/mathutils_geometry.h
index 4a200ec98ca9a6519c41b8a0d162e75ede4a9e40..c92f6ff64424df74df6ec4798eff7b0dde78913f 100644
--- a/source/blender/python/mathutils/mathutils_geometry.h
+++ b/source/blender/python/mathutils/mathutils_geometry.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/python/mathutils/mathutils_interpolate.c b/source/blender/python/mathutils/mathutils_interpolate.c
index bb6a7720c441af05d0bc32f2915199bfba98acd0..6523b3f725974786e4344f92833b8cc0b8844732 100644
--- a/source/blender/python/mathutils/mathutils_interpolate.c
+++ b/source/blender/python/mathutils/mathutils_interpolate.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup pymathutils
diff --git a/source/blender/python/mathutils/mathutils_interpolate.h b/source/blender/python/mathutils/mathutils_interpolate.h
index c51d2b6905b969abea1e5dffe76158d801308206..5ac95e78bbc23c571348d835bd5b968494570ad2 100644
--- a/source/blender/python/mathutils/mathutils_interpolate.h
+++ b/source/blender/python/mathutils/mathutils_interpolate.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/python/mathutils/mathutils_kdtree.c b/source/blender/python/mathutils/mathutils_kdtree.c
index 95a3b6dc20baa53bd7e33b7700ebb09b41a275cb..66c48697b6bb7aa3c3f15583595f0a932f737da1 100644
--- a/source/blender/python/mathutils/mathutils_kdtree.c
+++ b/source/blender/python/mathutils/mathutils_kdtree.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup mathutils
diff --git a/source/blender/python/mathutils/mathutils_kdtree.h b/source/blender/python/mathutils/mathutils_kdtree.h
index 3df3fc8d38288c4ad8f120c6b4b63b43280198a7..eaf414f0c943865d2a3335d249baa6368576f135 100644
--- a/source/blender/python/mathutils/mathutils_kdtree.h
+++ b/source/blender/python/mathutils/mathutils_kdtree.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup mathutils
diff --git a/source/blender/python/mathutils/mathutils_noise.c b/source/blender/python/mathutils/mathutils_noise.c
index d5e27496af8a8d73bbec3cedb9abc20b0b91943e..1c0b5fc782c23568b0e8aaabd9762ad0cc512ccd 100644
--- a/source/blender/python/mathutils/mathutils_noise.c
+++ b/source/blender/python/mathutils/mathutils_noise.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup mathutils
diff --git a/source/blender/python/mathutils/mathutils_noise.h b/source/blender/python/mathutils/mathutils_noise.h
index da5e1a99a03c8e5510ae763b376537d899ffcb43..a44bab1ad3fd89c38349284f506273d6b86d2760 100644
--- a/source/blender/python/mathutils/mathutils_noise.h
+++ b/source/blender/python/mathutils/mathutils_noise.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup mathutils
diff --git a/source/blender/python/rna_dump.py b/source/blender/python/rna_dump.py
index bd45a36e8a44cdbb9ddfdd212f5db07dfd917f76..61df784336cb4827dac66fdf841c96ae2360e682 100644
--- a/source/blender/python/rna_dump.py
+++ b/source/blender/python/rna_dump.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/source/blender/render/CMakeLists.txt b/source/blender/render/CMakeLists.txt
index a49fc21d7ff65ca52e6f34b18197c36bd365ed28..db406ae96f2501fbdb7e028d449024dd8d0a65b4 100644
--- a/source/blender/render/CMakeLists.txt
+++ b/source/blender/render/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 
 set(INC
diff --git a/source/blender/render/RE_bake.h b/source/blender/render/RE_bake.h
index d3025bf4198b4013d3aec0fefa7295aa2e360de0..6d84975716601096ec8ef7e95921a93ea79b1967 100644
--- a/source/blender/render/RE_bake.h
+++ b/source/blender/render/RE_bake.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/RE_engine.h b/source/blender/render/RE_engine.h
index c0bd8c0fe4eb28ab5b83350e2cee600add2098cb..578df1858c982f51f8fe40b35d7a9c950c03bad3 100644
--- a/source/blender/render/RE_engine.h
+++ b/source/blender/render/RE_engine.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/RE_multires_bake.h b/source/blender/render/RE_multires_bake.h
index 6df80c27c40011080fef79f0cd193b634700d0fc..a478f12489265a448c9ee89f8e376a71ae4a1cdd 100644
--- a/source/blender/render/RE_multires_bake.h
+++ b/source/blender/render/RE_multires_bake.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/RE_pipeline.h b/source/blender/render/RE_pipeline.h
index 6374b70ae1f38c6cfcac66b961bb6a647034195c..6250f61b11cd0832c0448049d93e6ae5fee9f6fe 100644
--- a/source/blender/render/RE_pipeline.h
+++ b/source/blender/render/RE_pipeline.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/RE_texture.h b/source/blender/render/RE_texture.h
index 4d58d866e9f9b4954b5b4894228b4cb2b6450349..be50eacd7bfce673741597ec8aec805487ab1b1a 100644
--- a/source/blender/render/RE_texture.h
+++ b/source/blender/render/RE_texture.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 /** \file
  * \ingroup render
  *
diff --git a/source/blender/render/RE_texture_margin.h b/source/blender/render/RE_texture_margin.h
index 8d1a6c458093e17da8d7a18d295a9f36bba33790..d297ca19404d861c35f5b2824a10c1e44dcf3813 100644
--- a/source/blender/render/RE_texture_margin.h
+++ b/source/blender/render/RE_texture_margin.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/render/intern/bake.c b/source/blender/render/intern/bake.c
index 883e026472bddf80ae2333f56a8c445a1fd2f30b..4971071316eb2a492412701ca62e7a3f5ccec522 100644
--- a/source/blender/render/intern/bake.c
+++ b/source/blender/render/intern/bake.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/engine.c b/source/blender/render/intern/engine.c
index 04f27ff6cbc6e712a488a9ff11d639404501860c..ae5ffdfc2321f2c57ac3f8c861b0b7dad9446f6d 100644
--- a/source/blender/render/intern/engine.c
+++ b/source/blender/render/intern/engine.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/initrender.c b/source/blender/render/intern/initrender.c
index 3bdf60c13a2ecc893de3602ac94b736f268cac35..a2a6a5815a089ede26a658b6f2bd262eb46d39fd 100644
--- a/source/blender/render/intern/initrender.c
+++ b/source/blender/render/intern/initrender.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/multires_bake.c b/source/blender/render/intern/multires_bake.c
index 9468e4c5b0f3129c7e2d0b6e4aa98569b12828f9..d99b2e729d11118c1f98d39e61f74447936c27ed 100644
--- a/source/blender/render/intern/multires_bake.c
+++ b/source/blender/render/intern/multires_bake.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/pipeline.c b/source/blender/render/intern/pipeline.c
index 739202564af2f12e46eefa39832b9e3e55bcb53e..ed4326bce69c357549a5a5ece2effc63464e0c1d 100644
--- a/source/blender/render/intern/pipeline.c
+++ b/source/blender/render/intern/pipeline.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/pipeline.h b/source/blender/render/intern/pipeline.h
index ba2e382619dd2930455359191ec2e13e8e2fb1fd..689e4509da301ce386b3e364e318214f1e57dbfa 100644
--- a/source/blender/render/intern/pipeline.h
+++ b/source/blender/render/intern/pipeline.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/render_result.c b/source/blender/render/intern/render_result.c
index d207ea0a38eb55561ea74281e1e968e83124f3fd..a3ba8e2f02b03ad501a5f6bbb11b29097bfc55b5 100644
--- a/source/blender/render/intern/render_result.c
+++ b/source/blender/render/intern/render_result.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2006 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2006 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/render_result.h b/source/blender/render/intern/render_result.h
index 9084dbf95cee00284e203f77c2ca3cc952a01fc9..07929f4351f001719817f2d0e8f8a4fab055e3be 100644
--- a/source/blender/render/intern/render_result.h
+++ b/source/blender/render/intern/render_result.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/render_types.h b/source/blender/render/intern/render_types.h
index e5d766acf8d2820d22a186aadc9210aeea3d59de..b3c80f7ddedb738f3b43cddb431d4aef0f7c0e8c 100644
--- a/source/blender/render/intern/render_types.h
+++ b/source/blender/render/intern/render_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/texture_common.h b/source/blender/render/intern/texture_common.h
index 434874392287b9aaa714e8a652e740374b2c876b..0057779bda64357d159d09f0941ac4a49c614541 100644
--- a/source/blender/render/intern/texture_common.h
+++ b/source/blender/render/intern/texture_common.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/texture_image.c b/source/blender/render/intern/texture_image.c
index ad355d0cb25791d4e6c7a8a8b5678f8e89737ba2..69c24a18f36964e59448a2533bb736ddd3dab12d 100644
--- a/source/blender/render/intern/texture_image.c
+++ b/source/blender/render/intern/texture_image.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/texture_margin.cc b/source/blender/render/intern/texture_margin.cc
index 7aff01242e36dda1180d55c71e3535d2cb9b0bf5..adc11cd925e8a5f14175b81303fb02ab72d947bf 100644
--- a/source/blender/render/intern/texture_margin.cc
+++ b/source/blender/render/intern/texture_margin.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/texture_pointdensity.c b/source/blender/render/intern/texture_pointdensity.c
index 9abaeb3739f85d3edc5ab3fe3064295c6b2f7a85..f81b43f4bb034add910961842e24f77307994260 100644
--- a/source/blender/render/intern/texture_pointdensity.c
+++ b/source/blender/render/intern/texture_pointdensity.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/texture_procedural.c b/source/blender/render/intern/texture_procedural.c
index ee45810f44506bc419d761b13f3a33f72d0dfe39..4b1439529c158dfdd46feea3e4b779ab9208060a 100644
--- a/source/blender/render/intern/texture_procedural.c
+++ b/source/blender/render/intern/texture_procedural.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/zbuf.c b/source/blender/render/intern/zbuf.c
index beba10ad82a25eb3222ccfe2fbe3f74ebf757407..1aaf3aacdd71f968deca3e92ce2611417d3e3890 100644
--- a/source/blender/render/intern/zbuf.c
+++ b/source/blender/render/intern/zbuf.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/render/intern/zbuf.h b/source/blender/render/intern/zbuf.h
index 3e4832e04d6c704797ff5ec11cce5b1b6ebe5f2e..a577cf6756400ddf444f9e65f7ecafbe884c2d9f 100644
--- a/source/blender/render/intern/zbuf.h
+++ b/source/blender/render/intern/zbuf.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup render
diff --git a/source/blender/sequencer/CMakeLists.txt b/source/blender/sequencer/CMakeLists.txt
index 54524e453d478b41e313300f7da33005dcb678ff..61c6d9ee5aef3271462ecab0018a7ff36d9a28f1 100644
--- a/source/blender/sequencer/CMakeLists.txt
+++ b/source/blender/sequencer/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2011, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2011 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/sequencer/SEQ_add.h b/source/blender/sequencer/SEQ_add.h
index 23ad845fda1a1175cccd4a734298f7b95bf03ed4..2363a24589ae6d954647309e7133e44f7c82bd81 100644
--- a/source/blender/sequencer/SEQ_add.h
+++ b/source/blender/sequencer/SEQ_add.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_animation.h b/source/blender/sequencer/SEQ_animation.h
index 028f932344fabd1596ce09a281b7f46a487d259c..455e77fb4a32aa92ee0782f8dd8ae1d969b29010 100644
--- a/source/blender/sequencer/SEQ_animation.h
+++ b/source/blender/sequencer/SEQ_animation.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_clipboard.h b/source/blender/sequencer/SEQ_clipboard.h
index dc78f8cc1a21ef62f5641a504aeb14ccf1ee4bc6..5625f8886c9d2a07d9226c49e513ff248602479e 100644
--- a/source/blender/sequencer/SEQ_clipboard.h
+++ b/source/blender/sequencer/SEQ_clipboard.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_edit.h b/source/blender/sequencer/SEQ_edit.h
index 73723c23920453366122e00880520c8353a3964c..2f07d5ae940916dbc961e516cde1befb7e134cdb 100644
--- a/source/blender/sequencer/SEQ_edit.h
+++ b/source/blender/sequencer/SEQ_edit.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_effects.h b/source/blender/sequencer/SEQ_effects.h
index 8a79abde7bc9c08168f2e2ec7c594d31514a0f80..e5af6f963e23e0c7e9136f0d58ca2977df270695 100644
--- a/source/blender/sequencer/SEQ_effects.h
+++ b/source/blender/sequencer/SEQ_effects.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_iterator.h b/source/blender/sequencer/SEQ_iterator.h
index c26886c2e6c3c9581030edcb4c1e62ee7eec33cb..7465b3c42cd40bc7be418fc5585115f31b4b0c53 100644
--- a/source/blender/sequencer/SEQ_iterator.h
+++ b/source/blender/sequencer/SEQ_iterator.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_modifier.h b/source/blender/sequencer/SEQ_modifier.h
index 15cbb9dde5efacdab2009f051d88c970a36926ca..c9af196250dc257d64a61edbd164fa1433ec1fb8 100644
--- a/source/blender/sequencer/SEQ_modifier.h
+++ b/source/blender/sequencer/SEQ_modifier.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_prefetch.h b/source/blender/sequencer/SEQ_prefetch.h
index 980f761109458acfa4210a49f5bbd295c8fe5c89..bf9d2c4e2c2dc04a74eff2494eb3bd42e057de5e 100644
--- a/source/blender/sequencer/SEQ_prefetch.h
+++ b/source/blender/sequencer/SEQ_prefetch.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_proxy.h b/source/blender/sequencer/SEQ_proxy.h
index 164b279245cce05aa7debe3dab93bbcca5cbb367..00747f4b9cfcf7c912a0d3212871b992fb9a363a 100644
--- a/source/blender/sequencer/SEQ_proxy.h
+++ b/source/blender/sequencer/SEQ_proxy.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_relations.h b/source/blender/sequencer/SEQ_relations.h
index 9571e826759d844f38634616bf6cc8b4dfb84cd3..735b5659ca95b978bd9e5d2568dc366aefe03899 100644
--- a/source/blender/sequencer/SEQ_relations.h
+++ b/source/blender/sequencer/SEQ_relations.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_render.h b/source/blender/sequencer/SEQ_render.h
index 7f10160bf6acc11e851412db133ffb03ac2797a3..fcf9f2365e17e3e48fefe2f17dfd8bcd8b8325d4 100644
--- a/source/blender/sequencer/SEQ_render.h
+++ b/source/blender/sequencer/SEQ_render.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_select.h b/source/blender/sequencer/SEQ_select.h
index abd56ef3af7c046e07c478f44a531c50fb64df6b..92fb508372e727a3159754384a1457ba343f46ae 100644
--- a/source/blender/sequencer/SEQ_select.h
+++ b/source/blender/sequencer/SEQ_select.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_sequencer.h b/source/blender/sequencer/SEQ_sequencer.h
index 2e340049dbdfd82d8dcdcf5eb989ea04727c6f5a..8ded6d99a8dd7e8a5b6d57d7ccf1ec8d1117f865 100644
--- a/source/blender/sequencer/SEQ_sequencer.h
+++ b/source/blender/sequencer/SEQ_sequencer.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_sound.h b/source/blender/sequencer/SEQ_sound.h
index ac5d14c1e441655fa02623ed3f5adbe94cf222a0..52bdb68a554cf869a05743010191165bdd88e07e 100644
--- a/source/blender/sequencer/SEQ_sound.h
+++ b/source/blender/sequencer/SEQ_sound.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_time.h b/source/blender/sequencer/SEQ_time.h
index f08220e49589422e372f7cea49af3aa3abaedd35..b4adc950d6b7dcc1963e7af1da8e1400d9239e63 100644
--- a/source/blender/sequencer/SEQ_time.h
+++ b/source/blender/sequencer/SEQ_time.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_transform.h b/source/blender/sequencer/SEQ_transform.h
index 00d1f1c99558a3e8f6fa9f360c9ddb8642343b17..223077894b2189797936ab413ab8b7623bbc7db4 100644
--- a/source/blender/sequencer/SEQ_transform.h
+++ b/source/blender/sequencer/SEQ_transform.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/SEQ_utils.h b/source/blender/sequencer/SEQ_utils.h
index 515c47f53fdd4eca4efda9b7f22fa27f9f79db90..ec33bca87a313546116a65a79f39cb8aef457cd4 100644
--- a/source/blender/sequencer/SEQ_utils.h
+++ b/source/blender/sequencer/SEQ_utils.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/intern/animation.c b/source/blender/sequencer/intern/animation.c
index 492b757a4b16ebb1612343051e12af031747eff1..47453ceda2b4c7c14f10236a4e68c01873726e0b 100644
--- a/source/blender/sequencer/intern/animation.c
+++ b/source/blender/sequencer/intern/animation.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2022 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2022 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sequencer
diff --git a/source/blender/sequencer/intern/clipboard.c b/source/blender/sequencer/intern/clipboard.c
index 82599a5fb6992ec3ff60650b3c6406e9b6a80fe3..dc3c82d1fdc66b4456c1666025d565fffa33e013 100644
--- a/source/blender/sequencer/intern/clipboard.c
+++ b/source/blender/sequencer/intern/clipboard.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/disk_cache.c b/source/blender/sequencer/intern/disk_cache.c
index 2db6a3cc8eee041337f8baeb218495de5dd0e43a..9216383d274ffc9263ec96984d5602611e1ef373 100644
--- a/source/blender/sequencer/intern/disk_cache.c
+++ b/source/blender/sequencer/intern/disk_cache.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sequencer
diff --git a/source/blender/sequencer/intern/disk_cache.h b/source/blender/sequencer/intern/disk_cache.h
index a84bfaf5ea0af06f0ad0e29c2bdbe1145d3b9597..62ac5364eb5365eacc0626edbec1fb1e956f8e81 100644
--- a/source/blender/sequencer/intern/disk_cache.h
+++ b/source/blender/sequencer/intern/disk_cache.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sequencer
diff --git a/source/blender/sequencer/intern/effects.c b/source/blender/sequencer/intern/effects.c
index 909954b99f12b1d61f6231d0e29016f26352b716..3196ca08155bf55e3e66f3f19c3c7c16569552aa 100644
--- a/source/blender/sequencer/intern/effects.c
+++ b/source/blender/sequencer/intern/effects.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/effects.h b/source/blender/sequencer/intern/effects.h
index c63f8f7a40421aea9bcbeaf2cdbb51ba38704e37..573f8df4352451def7806d896358c38980803162 100644
--- a/source/blender/sequencer/intern/effects.h
+++ b/source/blender/sequencer/intern/effects.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/intern/image_cache.c b/source/blender/sequencer/intern/image_cache.c
index 3caf965a60872159067640413020a0d09d7aa1ed..5f4916e640c14cf6abc072418dc8b56e9d7f9bac 100644
--- a/source/blender/sequencer/intern/image_cache.c
+++ b/source/blender/sequencer/intern/image_cache.c
@@ -1,20 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2010 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Peter Schlaile <peter [at] schlaile [dot] de>. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/image_cache.h b/source/blender/sequencer/intern/image_cache.h
index 65732b5d83daacb59f45401c034c92375f148a24..a7ae130dc414052ca2da8f59e7b4231e37b31fa0 100644
--- a/source/blender/sequencer/intern/image_cache.h
+++ b/source/blender/sequencer/intern/image_cache.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/intern/iterator.c b/source/blender/sequencer/intern/iterator.c
index 42a5f5df78755789919318661a176c4e0aca17ec..4b378738c89c0fb5e70dd666629bea1ed1efd3a6 100644
--- a/source/blender/sequencer/intern/iterator.c
+++ b/source/blender/sequencer/intern/iterator.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/modifier.c b/source/blender/sequencer/intern/modifier.c
index 00ae88232fd5f3e140e351ea74be235d3b61c975..b0f2f53396b7e1c5f1940c1ba595da0c7601079f 100644
--- a/source/blender/sequencer/intern/modifier.c
+++ b/source/blender/sequencer/intern/modifier.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2012 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/multiview.c b/source/blender/sequencer/intern/multiview.c
index 2658846209f6c7b9ea784e3f932fade65eb69b62..6acad1f0ad327c2aac422b1aea9ef54493183950 100644
--- a/source/blender/sequencer/intern/multiview.c
+++ b/source/blender/sequencer/intern/multiview.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/multiview.h b/source/blender/sequencer/intern/multiview.h
index 79d99c88b50b6463d4cf04e7652e4a04ba5fd72e..3fea277824aecb261d022e45a9e32e5eb6717ce8 100644
--- a/source/blender/sequencer/intern/multiview.h
+++ b/source/blender/sequencer/intern/multiview.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/intern/prefetch.c b/source/blender/sequencer/intern/prefetch.c
index 42affae26ed567c4d72fa0570ed84725159f7f4b..0b5ab0dd86ce09bcdfc1b2d52ed1ede58551b1c7 100644
--- a/source/blender/sequencer/intern/prefetch.c
+++ b/source/blender/sequencer/intern/prefetch.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/prefetch.h b/source/blender/sequencer/intern/prefetch.h
index 8cc5f6d35d145cca8a1c387896a7d9fd86d70f76..ce1a42a62db1aa47f049fd19c467008977803847 100644
--- a/source/blender/sequencer/intern/prefetch.h
+++ b/source/blender/sequencer/intern/prefetch.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/intern/proxy.c b/source/blender/sequencer/intern/proxy.c
index 906474f301db447de608e92824ee7dcec636f997..d87da1557e06ac4505c6fefd3837ddda5a030422 100644
--- a/source/blender/sequencer/intern/proxy.c
+++ b/source/blender/sequencer/intern/proxy.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/proxy.h b/source/blender/sequencer/intern/proxy.h
index e92cd8de4295025b178985792bc12e582c6363e2..8d2ed774f472e7799f394f6e9795065db3c3c4a1 100644
--- a/source/blender/sequencer/intern/proxy.h
+++ b/source/blender/sequencer/intern/proxy.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/intern/proxy_job.c b/source/blender/sequencer/intern/proxy_job.c
index 8989d7959c91e8bd8abfba56fc474be766c9ec61..8520c06f9a2ab6cb45b53cbae634022e46e1c82b 100644
--- a/source/blender/sequencer/intern/proxy_job.c
+++ b/source/blender/sequencer/intern/proxy_job.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/render.c b/source/blender/sequencer/intern/render.c
index 08c81096b140ec05878ab16b76a6b8bf371158d2..d2a80ad0909919f3b0f35ac1e57fad5bbbcaf3d8 100644
--- a/source/blender/sequencer/intern/render.c
+++ b/source/blender/sequencer/intern/render.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/render.h b/source/blender/sequencer/intern/render.h
index eb1f71769a6754acede5140ae36bd22b985a1a01..9a41cd8888a12606170c9972364cb462aa6d0a9f 100644
--- a/source/blender/sequencer/intern/render.h
+++ b/source/blender/sequencer/intern/render.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/intern/sequence_lookup.c b/source/blender/sequencer/intern/sequence_lookup.c
index 8d451d59e92580962dd10d66d2b1bb32f9fd0ae8..2a2626d8abfebda19ae98273b2cb56384c714f61 100644
--- a/source/blender/sequencer/intern/sequence_lookup.c
+++ b/source/blender/sequencer/intern/sequence_lookup.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2021 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2021 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sequencer
diff --git a/source/blender/sequencer/intern/sequencer.c b/source/blender/sequencer/intern/sequencer.c
index 387b65648a4992eebdec325fba942580678ebca5..345d26718fdb42b6d150d3db1a964408c791f42b 100644
--- a/source/blender/sequencer/intern/sequencer.c
+++ b/source/blender/sequencer/intern/sequencer.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/sequencer.h b/source/blender/sequencer/intern/sequencer.h
index 2a82f966f02b669e2ca8218ecdcb271772d77098..9f5bdf672c0183edb97da991cbee931addfa8eba 100644
--- a/source/blender/sequencer/intern/sequencer.h
+++ b/source/blender/sequencer/intern/sequencer.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/intern/sound.c b/source/blender/sequencer/intern/sound.c
index 141b07cebbeeeecb9989439be84ed818640dae0d..8076c6005609e69e5fc0461edba35ddae0621b63 100644
--- a/source/blender/sequencer/intern/sound.c
+++ b/source/blender/sequencer/intern/sound.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/strip_add.c b/source/blender/sequencer/intern/strip_add.c
index eb34d287dcc9a3300d95cf64ae15600ffab40f1d..f8e26a56692850fb40c19957ba4ede5fa856eb7f 100644
--- a/source/blender/sequencer/intern/strip_add.c
+++ b/source/blender/sequencer/intern/strip_add.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/strip_edit.c b/source/blender/sequencer/intern/strip_edit.c
index 0d6a94a806d482060075119d0911dd6274e818c3..60f3f35314e123b4ec122e2035630b03fccf5516 100644
--- a/source/blender/sequencer/intern/strip_edit.c
+++ b/source/blender/sequencer/intern/strip_edit.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/strip_relations.c b/source/blender/sequencer/intern/strip_relations.c
index a716bd6fed871ef3658a83408bccc2737d57c057..a65a331c650a72863d67c4a2ca191dd6e9325126 100644
--- a/source/blender/sequencer/intern/strip_relations.c
+++ b/source/blender/sequencer/intern/strip_relations.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/strip_select.c b/source/blender/sequencer/intern/strip_select.c
index c73e7d3a4202ad42de85a3fe6b53c7df23813ed9..69b4ce1f7c766ac7a260f62b94dd28ceead139ce 100644
--- a/source/blender/sequencer/intern/strip_select.c
+++ b/source/blender/sequencer/intern/strip_select.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/strip_time.c b/source/blender/sequencer/intern/strip_time.c
index 2d36ab0654bf3f9d7e8e90905b5560edd129e2e4..ec908dcdc9336038478da828bf9c3a59b12bc41d 100644
--- a/source/blender/sequencer/intern/strip_time.c
+++ b/source/blender/sequencer/intern/strip_time.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/strip_time.h b/source/blender/sequencer/intern/strip_time.h
index 4fe8d03e64152944751a7036aaa277f371798b5f..c96a016e64601aed040d3ae2b096ba153bd1f3eb 100644
--- a/source/blender/sequencer/intern/strip_time.h
+++ b/source/blender/sequencer/intern/strip_time.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/sequencer/intern/strip_transform.c b/source/blender/sequencer/intern/strip_transform.c
index f4f492708eb006fcf3e16f9b4dba563783856298..8849b029d46b872cde0b2bb813cfecc6cbc891e9 100644
--- a/source/blender/sequencer/intern/strip_transform.c
+++ b/source/blender/sequencer/intern/strip_transform.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/utils.c b/source/blender/sequencer/intern/utils.c
index fa34f0d6c79cfcd7c83b10865cd01accd2b7b15a..0c37fb11c0413ed62b88a5ddb0c56f66e90e66ae 100644
--- a/source/blender/sequencer/intern/utils.c
+++ b/source/blender/sequencer/intern/utils.c
@@ -1,22 +1,7 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
+/* SPDX-License-Identifier: GPL-2.0-or-later
  * Copyright 2001-2002 NaN Holding BV. All rights reserved.
  *           2003-2009 Blender Foundation.
- *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de>
- */
+ *           2005-2006 Peter Schlaile <peter [at] schlaile [dot] de> */
 
 /** \file
  * \ingroup bke
diff --git a/source/blender/sequencer/intern/utils.h b/source/blender/sequencer/intern/utils.h
index b5aa66804c6cd493337c10a28001bfc0e42a685e..4e5ed281eeaa3b3b29205510ef80ce7a19aef61d 100644
--- a/source/blender/sequencer/intern/utils.h
+++ b/source/blender/sequencer/intern/utils.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2004 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/shader_fx/CMakeLists.txt b/source/blender/shader_fx/CMakeLists.txt
index ae78d9964e547a7179b40db742786cd8d1e54263..c40033bd2b29d84a99de898e9d6bcaa627e6ec7c 100644
--- a/source/blender/shader_fx/CMakeLists.txt
+++ b/source/blender/shader_fx/CMakeLists.txt
@@ -1,23 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2018, Blender Foundation
-# All rights reserved.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2018 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/shader_fx/FX_shader_types.h b/source/blender/shader_fx/FX_shader_types.h
index 54d3f98bdd4e9c243c8e96fc33c82fda45c03dca..71ef6ea06ba5328200338cd63c95ac91bf7169ff 100644
--- a/source/blender/shader_fx/FX_shader_types.h
+++ b/source/blender/shader_fx/FX_shader_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup shader_fx
diff --git a/source/blender/shader_fx/intern/FX_shader_blur.c b/source/blender/shader_fx/intern/FX_shader_blur.c
index dee9542edc406f463cdbc369802b6e1187762f5f..0d57b4c97e00b36b411e1962491c279159e974bb 100644
--- a/source/blender/shader_fx/intern/FX_shader_blur.c
+++ b/source/blender/shader_fx/intern/FX_shader_blur.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup shader_fx
diff --git a/source/blender/shader_fx/intern/FX_shader_colorize.c b/source/blender/shader_fx/intern/FX_shader_colorize.c
index 1d4f1ca4de8b2e1e9bb42854418aad09c40a6f81..97ced68b0cf10ecaafde0373be2e9186c86f73af 100644
--- a/source/blender/shader_fx/intern/FX_shader_colorize.c
+++ b/source/blender/shader_fx/intern/FX_shader_colorize.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup shader_fx
diff --git a/source/blender/shader_fx/intern/FX_shader_flip.c b/source/blender/shader_fx/intern/FX_shader_flip.c
index 048ff3deba147376390ede6666c88532bffde4e7..050550bb24dd4344de95b0c8e163e55907c5c982 100644
--- a/source/blender/shader_fx/intern/FX_shader_flip.c
+++ b/source/blender/shader_fx/intern/FX_shader_flip.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup shader_fx
diff --git a/source/blender/shader_fx/intern/FX_shader_glow.c b/source/blender/shader_fx/intern/FX_shader_glow.c
index fc75771cd62ca4a0cffd4ed0838f1ed393dfdb72..0aaacd1036ef21b248232db5c5545955adddeac3 100644
--- a/source/blender/shader_fx/intern/FX_shader_glow.c
+++ b/source/blender/shader_fx/intern/FX_shader_glow.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup shader_fx
diff --git a/source/blender/shader_fx/intern/FX_shader_pixel.c b/source/blender/shader_fx/intern/FX_shader_pixel.c
index 2a54425aa9d76c1a50d35fafb7e827acba96e02d..0eca0643c6982e254e164c25f5190c1a89572dbf 100644
--- a/source/blender/shader_fx/intern/FX_shader_pixel.c
+++ b/source/blender/shader_fx/intern/FX_shader_pixel.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2017, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2017 Blender Foundation. */
 
 /** \file
  * \ingroup shader_fx
diff --git a/source/blender/shader_fx/intern/FX_shader_rim.c b/source/blender/shader_fx/intern/FX_shader_rim.c
index a10211c3aa422ced9e1b5406b93711d42c73f13c..ec48e86706b6bd1b52fd2a6f25b7253eda8ae069 100644
--- a/source/blender/shader_fx/intern/FX_shader_rim.c
+++ b/source/blender/shader_fx/intern/FX_shader_rim.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup shader_fx
diff --git a/source/blender/shader_fx/intern/FX_shader_shadow.c b/source/blender/shader_fx/intern/FX_shader_shadow.c
index f84c7ffb7dbac78b223f9514c8ee9ef20c098a62..fdce7bf6e2004b067ffc8cf10f07d6fd4a14246b 100644
--- a/source/blender/shader_fx/intern/FX_shader_shadow.c
+++ b/source/blender/shader_fx/intern/FX_shader_shadow.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup shader_fx
diff --git a/source/blender/shader_fx/intern/FX_shader_swirl.c b/source/blender/shader_fx/intern/FX_shader_swirl.c
index 19ed3028f1cba197a1240c3e076da70712f2299d..6d835382b29731be1edff7912240a08feb785209 100644
--- a/source/blender/shader_fx/intern/FX_shader_swirl.c
+++ b/source/blender/shader_fx/intern/FX_shader_swirl.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup shader_fx
diff --git a/source/blender/shader_fx/intern/FX_shader_util.c b/source/blender/shader_fx/intern/FX_shader_util.c
index c2dcae04b85068fe6c985768b69858c9d94816ea..c64bdab7678c233fd93102f81c3921ed95ad9af2 100644
--- a/source/blender/shader_fx/intern/FX_shader_util.c
+++ b/source/blender/shader_fx/intern/FX_shader_util.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup shader_fx
diff --git a/source/blender/shader_fx/intern/FX_shader_util.h b/source/blender/shader_fx/intern/FX_shader_util.h
index 9617cfd2ee0fc04e97c6156cff9f054451ebbcc0..21ccc1822ac610ef186f84abf3e37b53a3eb35e5 100644
--- a/source/blender/shader_fx/intern/FX_shader_util.h
+++ b/source/blender/shader_fx/intern/FX_shader_util.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup shader_fx
diff --git a/source/blender/shader_fx/intern/FX_shader_wave.c b/source/blender/shader_fx/intern/FX_shader_wave.c
index 0f873e0d83160f7a9185d947843af536f747abb9..28469ca42b93c3061acf9f006ed454bbfdf30c5c 100644
--- a/source/blender/shader_fx/intern/FX_shader_wave.c
+++ b/source/blender/shader_fx/intern/FX_shader_wave.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2018, Blender Foundation
- * This is a new part of Blender
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2018 Blender Foundation. */
 
 /** \file
  * \ingroup shader_fx
diff --git a/source/blender/shader_fx/intern/FX_ui_common.c b/source/blender/shader_fx/intern/FX_ui_common.c
index 314aafd6b70dbe3ce81652de1ba286adfaa6b394..3770b796c4d1578ab23a92e7d2b58a44363fbad3 100644
--- a/source/blender/shader_fx/intern/FX_ui_common.c
+++ b/source/blender/shader_fx/intern/FX_ui_common.c
@@ -1,17 +1,4 @@
-/* This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/shader_fx/intern/FX_ui_common.h b/source/blender/shader_fx/intern/FX_ui_common.h
index 04982b9c0cfa5b08a9e4f06786611c619c0ddfd6..53c483813b6412bd472c58c4cc27696d6cc21026 100644
--- a/source/blender/shader_fx/intern/FX_ui_common.h
+++ b/source/blender/shader_fx/intern/FX_ui_common.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup modifiers
diff --git a/source/blender/simulation/CMakeLists.txt b/source/blender/simulation/CMakeLists.txt
index c536d6a7d69668c3bcdc448f82c490811cbdbed7..b98fe5d66f0c65327e2a23514dec7db0ff3bb27d 100644
--- a/source/blender/simulation/CMakeLists.txt
+++ b/source/blender/simulation/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2014, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2014 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/simulation/SIM_mass_spring.h b/source/blender/simulation/SIM_mass_spring.h
index b3299258209ee5d46f7aacc497142b6defa7b66f..1223e96edeb87551d04116e4048f25bac08ea7a7 100644
--- a/source/blender/simulation/SIM_mass_spring.h
+++ b/source/blender/simulation/SIM_mass_spring.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sim
diff --git a/source/blender/simulation/intern/ConstrainedConjugateGradient.h b/source/blender/simulation/intern/ConstrainedConjugateGradient.h
index d4d6057cd4c478b8b0a129e24e58d455b3c1ab4b..44722f13577c0d8dff62f5e571df98a843eefaf7 100644
--- a/source/blender/simulation/intern/ConstrainedConjugateGradient.h
+++ b/source/blender/simulation/intern/ConstrainedConjugateGradient.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/simulation/intern/SIM_mass_spring.cpp b/source/blender/simulation/intern/SIM_mass_spring.cpp
index 73b287b4233762a0a22dbbb0ba17fb25a07c9cab..5dfca5bda746f7a09aa2e20ede4695cdfdd6b18a 100644
--- a/source/blender/simulation/intern/SIM_mass_spring.cpp
+++ b/source/blender/simulation/intern/SIM_mass_spring.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sim
diff --git a/source/blender/simulation/intern/eigen_utils.h b/source/blender/simulation/intern/eigen_utils.h
index a5d7d5bc808a99aa1e07fcdd993809ae3ee9c0c0..ea8ee68df33e2f5bf4eccabb8d21f557c958358c 100644
--- a/source/blender/simulation/intern/eigen_utils.h
+++ b/source/blender/simulation/intern/eigen_utils.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/simulation/intern/hair_volume.cpp b/source/blender/simulation/intern/hair_volume.cpp
index f9b61fe9942b6e6b9f01b02fceabba5cefb3d328..36ac0c3906e7cad1232c56716bab39deb6d6123c 100644
--- a/source/blender/simulation/intern/hair_volume.cpp
+++ b/source/blender/simulation/intern/hair_volume.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sim
diff --git a/source/blender/simulation/intern/implicit.h b/source/blender/simulation/intern/implicit.h
index c8eab94d315e8c102dfb9562b13eef4af7be08a5..09063dfab4763a77c756556647fd68bd5543152e 100644
--- a/source/blender/simulation/intern/implicit.h
+++ b/source/blender/simulation/intern/implicit.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/simulation/intern/implicit_blender.c b/source/blender/simulation/intern/implicit_blender.c
index 95bf59101e6231b247f9f1586d70f70e0a595e6e..4193ef2c7c56ea37c74f9c18b274b82b6faf4684 100644
--- a/source/blender/simulation/intern/implicit_blender.c
+++ b/source/blender/simulation/intern/implicit_blender.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sim
diff --git a/source/blender/simulation/intern/implicit_eigen.cpp b/source/blender/simulation/intern/implicit_eigen.cpp
index d509b3db8732488b4f97f28ca3b7e2e83bb49282..75e915413bb48fadc49ab3ee73e76f6ac418ebeb 100644
--- a/source/blender/simulation/intern/implicit_eigen.cpp
+++ b/source/blender/simulation/intern/implicit_eigen.cpp
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup sim
diff --git a/source/blender/windowmanager/CMakeLists.txt b/source/blender/windowmanager/CMakeLists.txt
index 37b233d85d2f8e47a04dfccb63a03bd505f2d48a..bd8e97e7177265e83c27fb4c7a19755ceb383a5e 100644
--- a/source/blender/windowmanager/CMakeLists.txt
+++ b/source/blender/windowmanager/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/source/blender/windowmanager/WM_api.h b/source/blender/windowmanager/WM_api.h
index ff3e1b7474caba2f391c53bcfebfa4f5b3fb158b..c1281632cc1dead2954d187363588571b1b3aed1 100644
--- a/source/blender/windowmanager/WM_api.h
+++ b/source/blender/windowmanager/WM_api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 #pragma once
 
 /** \file
diff --git a/source/blender/windowmanager/WM_keymap.h b/source/blender/windowmanager/WM_keymap.h
index 4f1a2c8b9239a86ddca2e17d6e6e1711a6ec6016..32315d72ba7994a209f979562bd9943160468617 100644
--- a/source/blender/windowmanager/WM_keymap.h
+++ b/source/blender/windowmanager/WM_keymap.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 #pragma once
 
diff --git a/source/blender/windowmanager/WM_message.h b/source/blender/windowmanager/WM_message.h
index 25d5bae392b5704be9b6935f93b9c8a005868eb1..91aa52946627423558b9d298e8eff02d147107dd 100644
--- a/source/blender/windowmanager/WM_message.h
+++ b/source/blender/windowmanager/WM_message.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/WM_toolsystem.h b/source/blender/windowmanager/WM_toolsystem.h
index 32b9cf1d7ba6d7a5b8d832f3c8358c6b6b8c0183..4886e39943fedb9e9f43231c7a0c04b15fb20b7c 100644
--- a/source/blender/windowmanager/WM_toolsystem.h
+++ b/source/blender/windowmanager/WM_toolsystem.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 #pragma once
 
 /** \file
diff --git a/source/blender/windowmanager/WM_types.h b/source/blender/windowmanager/WM_types.h
index 929b39715b9e7c24d9408e09ceeb15e274aa2aa5..4799483157c0295c8ef599fbf1893957ec3a19da 100644
--- a/source/blender/windowmanager/WM_types.h
+++ b/source/blender/windowmanager/WM_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/gizmo/WM_gizmo_api.h b/source/blender/windowmanager/gizmo/WM_gizmo_api.h
index 5bcb9b195bf90b90f82aa39e1da40167a6cfebee..6b497c7462ac7ff0fa1ce19deaf6c7b7f63d9caf 100644
--- a/source/blender/windowmanager/gizmo/WM_gizmo_api.h
+++ b/source/blender/windowmanager/gizmo/WM_gizmo_api.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/gizmo/WM_gizmo_types.h b/source/blender/windowmanager/gizmo/WM_gizmo_types.h
index 8bf82a41c91dd6bf6663643249b9bd4541fe15ff..03fafdd7d747fc0d0124ad8eb3596baca9f6fc1a 100644
--- a/source/blender/windowmanager/gizmo/WM_gizmo_types.h
+++ b/source/blender/windowmanager/gizmo/WM_gizmo_types.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/gizmo/intern/wm_gizmo.c b/source/blender/windowmanager/gizmo/intern/wm_gizmo.c
index d4f11c79d46156b9d9576326b1cdf1d39fa61274..05564f3bd0a5199bca63be212de58d91dcb3e1ad 100644
--- a/source/blender/windowmanager/gizmo/intern/wm_gizmo.c
+++ b/source/blender/windowmanager/gizmo/intern/wm_gizmo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/gizmo/intern/wm_gizmo_group.c b/source/blender/windowmanager/gizmo/intern/wm_gizmo_group.c
index 2a93e2795761a727afa53eefec594bd7bec74d08..c46a2b6afe5fc3d2b983c08fc95f4324633fe389 100644
--- a/source/blender/windowmanager/gizmo/intern/wm_gizmo_group.c
+++ b/source/blender/windowmanager/gizmo/intern/wm_gizmo_group.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/gizmo/intern/wm_gizmo_group_type.c b/source/blender/windowmanager/gizmo/intern/wm_gizmo_group_type.c
index 0a36068bb212195e322f1ec40324c1915e6a9562..e6b5e8f4aa6972bdff707daa0cbc9d54e4ba497d 100644
--- a/source/blender/windowmanager/gizmo/intern/wm_gizmo_group_type.c
+++ b/source/blender/windowmanager/gizmo/intern/wm_gizmo_group_type.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/gizmo/intern/wm_gizmo_intern.h b/source/blender/windowmanager/gizmo/intern/wm_gizmo_intern.h
index 187612f2651fac88de9fddadba9946efcd9062a5..ef6bee0c1feafd14d5171f1710f34e527d72b5cb 100644
--- a/source/blender/windowmanager/gizmo/intern/wm_gizmo_intern.h
+++ b/source/blender/windowmanager/gizmo/intern/wm_gizmo_intern.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/gizmo/intern/wm_gizmo_map.c b/source/blender/windowmanager/gizmo/intern/wm_gizmo_map.c
index 83e6e347ce7eb27e84a463207e37fac06358e4a5..4aba287aefb87e48bef1d056f8b82955b685196d 100644
--- a/source/blender/windowmanager/gizmo/intern/wm_gizmo_map.c
+++ b/source/blender/windowmanager/gizmo/intern/wm_gizmo_map.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/gizmo/intern/wm_gizmo_target_props.c b/source/blender/windowmanager/gizmo/intern/wm_gizmo_target_props.c
index 57555fb5416f9d9c8ae5657bc0cefdd3b64054e5..af083630623f384a12c3bb1b73c9fb1c43710f95 100644
--- a/source/blender/windowmanager/gizmo/intern/wm_gizmo_target_props.c
+++ b/source/blender/windowmanager/gizmo/intern/wm_gizmo_target_props.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/gizmo/intern/wm_gizmo_type.c b/source/blender/windowmanager/gizmo/intern/wm_gizmo_type.c
index 602100a624eeb208b84b0cffc6892cd5e609ef92..9d0e60824f36286c1ae96fbe5105c521df399882 100644
--- a/source/blender/windowmanager/gizmo/intern/wm_gizmo_type.c
+++ b/source/blender/windowmanager/gizmo/intern/wm_gizmo_type.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/gizmo/wm_gizmo_fn.h b/source/blender/windowmanager/gizmo/wm_gizmo_fn.h
index ac4f6b761acfc3dbff1b52aadc3ac4ec9aed626c..a9904f47510198456f09027299b51da22ccb9688 100644
--- a/source/blender/windowmanager/gizmo/wm_gizmo_fn.h
+++ b/source/blender/windowmanager/gizmo/wm_gizmo_fn.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/gizmo/wm_gizmo_wmapi.h b/source/blender/windowmanager/gizmo/wm_gizmo_wmapi.h
index 0612ba97db00a3c1394ebb0a635d015153b65fbf..7bcb7dfa5e1cd7f5fc4550e6c45d7f8dda590346 100644
--- a/source/blender/windowmanager/gizmo/wm_gizmo_wmapi.h
+++ b/source/blender/windowmanager/gizmo/wm_gizmo_wmapi.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2016 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2016 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm.c b/source/blender/windowmanager/intern/wm.c
index 40f8da63e113f926a5536a6374e2c3e71cff6d98..13bf902f02c776a1fdb3f8f48af8c07d622fa314 100644
--- a/source/blender/windowmanager/intern/wm.c
+++ b/source/blender/windowmanager/intern/wm.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_cursors.c b/source/blender/windowmanager/intern/wm_cursors.c
index 74ec2bcd41fcaec9b2b19d87a13524883e487a99..b7066178abdeb2930b700c5a0aaf211bbf8ef92a 100644
--- a/source/blender/windowmanager/intern/wm_cursors.c
+++ b/source/blender/windowmanager/intern/wm_cursors.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005-2007 Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2005-2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_dragdrop.c b/source/blender/windowmanager/intern/wm_dragdrop.c
index 3bc77db45cabf276d8eb97343acb7bebbf718440..f69a612df192af61278a3bc399a36647958d7acc 100644
--- a/source/blender/windowmanager/intern/wm_dragdrop.c
+++ b/source/blender/windowmanager/intern/wm_dragdrop.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2010 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2010 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_draw.c b/source/blender/windowmanager/intern/wm_draw.c
index 9dfac54a91ee89a93686d63910e632e4ee19b398..46f7b67c2bad2ff0f589347d3d7c6cbf7dca495e 100644
--- a/source/blender/windowmanager/intern/wm_draw.c
+++ b/source/blender/windowmanager/intern/wm_draw.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_event_query.c b/source/blender/windowmanager/intern/wm_event_query.c
index 22cd68ddbd7d3582a7a37bfff4668ceb7ab75653..304d7f73eb1712c2c14f381b16ffbaccfccc50b5 100644
--- a/source/blender/windowmanager/intern/wm_event_query.c
+++ b/source/blender/windowmanager/intern/wm_event_query.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_event_system.c b/source/blender/windowmanager/intern/wm_event_system.c
index 5210b315af63188764b5d67ea18135aaf83831d5..8a19c99f59b0f161814c76146650aa9bd0e5f281 100644
--- a/source/blender/windowmanager/intern/wm_event_system.c
+++ b/source/blender/windowmanager/intern/wm_event_system.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_files.c b/source/blender/windowmanager/intern/wm_files.c
index 9b9aa37a251cdc4068ad7924939c85495bbf16e2..7471d41b44c1989d1c1f75cefeb9b435ec1137ac 100644
--- a/source/blender/windowmanager/intern/wm_files.c
+++ b/source/blender/windowmanager/intern/wm_files.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_files_link.c b/source/blender/windowmanager/intern/wm_files_link.c
index cf6ecd55757b8c721d2c2305bef7887de757daa3..25b9678ef11aba4c3818281582496a24ecaebc9d 100644
--- a/source/blender/windowmanager/intern/wm_files_link.c
+++ b/source/blender/windowmanager/intern/wm_files_link.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_gesture.c b/source/blender/windowmanager/intern/wm_gesture.c
index 7f923d4af60cc0a8867268926f62cb32a9e79524..581c5f8a198cd9006f408c94c4539e6faefa8108 100644
--- a/source/blender/windowmanager/intern/wm_gesture.c
+++ b/source/blender/windowmanager/intern/wm_gesture.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2008 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_gesture_ops.c b/source/blender/windowmanager/intern/wm_gesture_ops.c
index 8d45d5aed67d3fd3fb81b194fa9c2a59d344314c..2a27a8df4113ecf43e21f9ccf0edc19cbb887181 100644
--- a/source/blender/windowmanager/intern/wm_gesture_ops.c
+++ b/source/blender/windowmanager/intern/wm_gesture_ops.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_init_exit.c b/source/blender/windowmanager/intern/wm_init_exit.c
index cff4287a2d0e46bdb0b2105def12d5fd8ecd802e..6cefbf0bae53fc815c397eb2a6592ec45053d513 100644
--- a/source/blender/windowmanager/intern/wm_init_exit.c
+++ b/source/blender/windowmanager/intern/wm_init_exit.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_jobs.c b/source/blender/windowmanager/intern/wm_jobs.c
index e7ad654d3e5a1748d2284ea14b78b3930e4a9ce7..701a93c7e2121b5931aafc379b58ae14b762747e 100644
--- a/source/blender/windowmanager/intern/wm_jobs.c
+++ b/source/blender/windowmanager/intern/wm_jobs.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2009 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2009 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_keymap.c b/source/blender/windowmanager/intern/wm_keymap.c
index 0214fce59b2c614a161424bc94cad0144714e029..f7bc138f163ed11ca042d49f0228d3d3fdd33b3f 100644
--- a/source/blender/windowmanager/intern/wm_keymap.c
+++ b/source/blender/windowmanager/intern/wm_keymap.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_keymap_utils.c b/source/blender/windowmanager/intern/wm_keymap_utils.c
index d424eef8262f76ba5796bdfb91a5a258b2778ba3..06ee093372ee4035a6b446f0bf712e2334a27234 100644
--- a/source/blender/windowmanager/intern/wm_keymap_utils.c
+++ b/source/blender/windowmanager/intern/wm_keymap_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_menu_type.c b/source/blender/windowmanager/intern/wm_menu_type.c
index 799b6fc2e5204d99c5cefe61eaf79c6fe78992c3..9e50ebb1ce510b2639a31539e526a36be67d711b 100644
--- a/source/blender/windowmanager/intern/wm_menu_type.c
+++ b/source/blender/windowmanager/intern/wm_menu_type.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_operator_props.c b/source/blender/windowmanager/intern/wm_operator_props.c
index ebd6719d54d6da9ac7b9e90d6af501d48be24872..ca0a41604bb37f2b727158507f54688d03eb99f7 100644
--- a/source/blender/windowmanager/intern/wm_operator_props.c
+++ b/source/blender/windowmanager/intern/wm_operator_props.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_operator_type.c b/source/blender/windowmanager/intern/wm_operator_type.c
index 0f6096e7b8b7e1a15a19e66e614104b7e9ab06a8..be1fe726c57d943068b620a3f79b67c0d417ac7f 100644
--- a/source/blender/windowmanager/intern/wm_operator_type.c
+++ b/source/blender/windowmanager/intern/wm_operator_type.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_operator_utils.c b/source/blender/windowmanager/intern/wm_operator_utils.c
index dbcfd814692b3a4346b7bcbfc6b17be22e699afb..6f3f42bee53bbdd461306026fc004c0cd6d2d49e 100644
--- a/source/blender/windowmanager/intern/wm_operator_utils.c
+++ b/source/blender/windowmanager/intern/wm_operator_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_operators.c b/source/blender/windowmanager/intern/wm_operators.c
index 2c82d8f5b6bceeb08318c195afb10cd4bbe6a229..a476fb4fa134e47b28e9448db6f1e7a7de3aa954 100644
--- a/source/blender/windowmanager/intern/wm_operators.c
+++ b/source/blender/windowmanager/intern/wm_operators.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_panel_type.c b/source/blender/windowmanager/intern/wm_panel_type.c
index 609bb55e07549a7b6d2ba181921bb29ff100fd19..bfcc86c38e7c7fbbb9464ae4da3edd50e628de34 100644
--- a/source/blender/windowmanager/intern/wm_panel_type.c
+++ b/source/blender/windowmanager/intern/wm_panel_type.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_platform_support.c b/source/blender/windowmanager/intern/wm_platform_support.c
index 54fc454ee65651ae782c4a751dead3a31305595b..becc2d896d082cb5098906de640acabfd576688f 100644
--- a/source/blender/windowmanager/intern/wm_platform_support.c
+++ b/source/blender/windowmanager/intern/wm_platform_support.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_platform_support.h b/source/blender/windowmanager/intern/wm_platform_support.h
index 6346f5173437f73a39004f7cf1d705698dfeef43..389ce1afa8876b705e119f8c7ab66b1f81ab5aeb 100644
--- a/source/blender/windowmanager/intern/wm_platform_support.h
+++ b/source/blender/windowmanager/intern/wm_platform_support.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_playanim.c b/source/blender/windowmanager/intern/wm_playanim.c
index 640fef82085e355794217c3c3b8fc478fb4ca580..2ee608c075558b9df61863092abc4f5950514f74 100644
--- a/source/blender/windowmanager/intern/wm_playanim.c
+++ b/source/blender/windowmanager/intern/wm_playanim.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_splash_screen.c b/source/blender/windowmanager/intern/wm_splash_screen.c
index 7513e4d31cc429c6cdd777e100094e774995dcb6..2e04a629308edfe11aed3eabe982f61269569a72 100644
--- a/source/blender/windowmanager/intern/wm_splash_screen.c
+++ b/source/blender/windowmanager/intern/wm_splash_screen.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_stereo.c b/source/blender/windowmanager/intern/wm_stereo.c
index a62ced1a4bf430613649f7d5721cb41b2ecee900..6bdd11df776a01f0bd7199178c453b557eb1e08c 100644
--- a/source/blender/windowmanager/intern/wm_stereo.c
+++ b/source/blender/windowmanager/intern/wm_stereo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2015 by Blender Foundation
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2015 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_subwindow.c b/source/blender/windowmanager/intern/wm_subwindow.c
index 524580ac88fbd69f50b15fe029c774191c843f52..151b691883907e461fcb0fd9a3389c403a228275 100644
--- a/source/blender/windowmanager/intern/wm_subwindow.c
+++ b/source/blender/windowmanager/intern/wm_subwindow.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_surface.c b/source/blender/windowmanager/intern/wm_surface.c
index 385b55f36f9e86b1d846cb33b21a37a266b1bfc6..2c96ae1f1403045b33bb308dbea3e184ef7c7112 100644
--- a/source/blender/windowmanager/intern/wm_surface.c
+++ b/source/blender/windowmanager/intern/wm_surface.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_toolsystem.c b/source/blender/windowmanager/intern/wm_toolsystem.c
index 7b8feac45b4a8ed329add22a3fe12b3685e56be4..4ae935b14f2e125d0420993009d9f6839b488f3f 100644
--- a/source/blender/windowmanager/intern/wm_toolsystem.c
+++ b/source/blender/windowmanager/intern/wm_toolsystem.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_tooltip.c b/source/blender/windowmanager/intern/wm_tooltip.c
index 3bcd122f08deeffc65c59191ce02fc24fcfa3b10..fa8138e6057f48edc8bb4bf2e32cc440eb547541 100644
--- a/source/blender/windowmanager/intern/wm_tooltip.c
+++ b/source/blender/windowmanager/intern/wm_tooltip.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_uilist_type.c b/source/blender/windowmanager/intern/wm_uilist_type.c
index a2ae42d5ead58692bb6997062cc659af5db66f43..88eacf9013b99a9764bb561f63d25c85f5580881 100644
--- a/source/blender/windowmanager/intern/wm_uilist_type.c
+++ b/source/blender/windowmanager/intern/wm_uilist_type.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_utils.c b/source/blender/windowmanager/intern/wm_utils.c
index 163ab257beb4f963228a441ab05db3cfad7cda00..55f24cb799c685d9f22b713c77ce54db0c711e28 100644
--- a/source/blender/windowmanager/intern/wm_utils.c
+++ b/source/blender/windowmanager/intern/wm_utils.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_window.c b/source/blender/windowmanager/intern/wm_window.c
index 7e4acf709b7cdbd08be7d317ead5ff75752f971d..a983150b504917d05de0a11cdf381105b407664e 100644
--- a/source/blender/windowmanager/intern/wm_window.c
+++ b/source/blender/windowmanager/intern/wm_window.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Copyright 2001-2002 by NaN Holding BV. All rights reserved.
- *           2007 Blender Foundation
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. 2007 Blender Foundation. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/intern/wm_window_private.h b/source/blender/windowmanager/intern/wm_window_private.h
index c208d07ee37f082fb724a9fdaa1f6b31770bd2c1..f68d4e3e6938c4225c0b78eb420750efa9bd397b 100644
--- a/source/blender/windowmanager/intern/wm_window_private.h
+++ b/source/blender/windowmanager/intern/wm_window_private.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/message_bus/intern/wm_message_bus.c b/source/blender/windowmanager/message_bus/intern/wm_message_bus.c
index 81ef8c881f5772261592cf050ff90f365101b806..bf2107c3db31008860c982948189d4f551e5358a 100644
--- a/source/blender/windowmanager/message_bus/intern/wm_message_bus.c
+++ b/source/blender/windowmanager/message_bus/intern/wm_message_bus.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/message_bus/intern/wm_message_bus_intern.h b/source/blender/windowmanager/message_bus/intern/wm_message_bus_intern.h
index 18df17c3d1c1661a6a789df4328786829707fc88..89bee5e0a2f17eca8dc9cd6ceb94fcad48311072 100644
--- a/source/blender/windowmanager/message_bus/intern/wm_message_bus_intern.h
+++ b/source/blender/windowmanager/message_bus/intern/wm_message_bus_intern.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/message_bus/intern/wm_message_bus_rna.c b/source/blender/windowmanager/message_bus/intern/wm_message_bus_rna.c
index bc083793395f9af133a53b108fa9dbb2ff73e800..be153195cee87ad3be94ca24367a2f4a3efd274a 100644
--- a/source/blender/windowmanager/message_bus/intern/wm_message_bus_rna.c
+++ b/source/blender/windowmanager/message_bus/intern/wm_message_bus_rna.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/message_bus/intern/wm_message_bus_static.c b/source/blender/windowmanager/message_bus/intern/wm_message_bus_static.c
index c47cec4b3e404171d48976a705a1627ecab11874..0e4f6a937bde2e55ac81369f4fa283f3bebdcdb1 100644
--- a/source/blender/windowmanager/message_bus/intern/wm_message_bus_static.c
+++ b/source/blender/windowmanager/message_bus/intern/wm_message_bus_static.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/message_bus/wm_message_bus.h b/source/blender/windowmanager/message_bus/wm_message_bus.h
index a93a7bbcea7993b1972ae87895b42c788f44b51a..c46f5d6df722f9d6f9c374a6fbf08c032425ecbb 100644
--- a/source/blender/windowmanager/message_bus/wm_message_bus.h
+++ b/source/blender/windowmanager/message_bus/wm_message_bus.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/wm.h b/source/blender/windowmanager/wm.h
index e67b158187517cf7bae60670fb6a0e5832138c39..68b16d46746de833b54ce7caf3778314fcaaf292 100644
--- a/source/blender/windowmanager/wm.h
+++ b/source/blender/windowmanager/wm.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/wm_cursors.h b/source/blender/windowmanager/wm_cursors.h
index d1694454490792baadb52c073e917238fd4493b4..b5f8e4fb53d9dae3aadbd6ba8ac3947c1f1ba63e 100644
--- a/source/blender/windowmanager/wm_cursors.h
+++ b/source/blender/windowmanager/wm_cursors.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/wm_draw.h b/source/blender/windowmanager/wm_draw.h
index 4997361b485b9dc727d0715485bb9ddc8d928bd2..3351fa2c6374f7a9a08953ef735b443166811af1 100644
--- a/source/blender/windowmanager/wm_draw.h
+++ b/source/blender/windowmanager/wm_draw.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/wm_event_system.h b/source/blender/windowmanager/wm_event_system.h
index 252ff228bc1781edc2e05c6afce7f0b1b5df4c68..edbfe0202defb1de82f819697818ced61d292477 100644
--- a/source/blender/windowmanager/wm_event_system.h
+++ b/source/blender/windowmanager/wm_event_system.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/wm_event_types.h b/source/blender/windowmanager/wm_event_types.h
index 6fcaad926611c1fa8554976501aeef42e5d5918a..0ff181db9b113ae366a55cfd7c170926639d70da 100644
--- a/source/blender/windowmanager/wm_event_types.h
+++ b/source/blender/windowmanager/wm_event_types.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/wm_files.h b/source/blender/windowmanager/wm_files.h
index e63afb2ed2fd845dfe418d1ad79906e443a81462..1c09f861c6c29e6ab95c8ac89a614d7e0ca37035 100644
--- a/source/blender/windowmanager/wm_files.h
+++ b/source/blender/windowmanager/wm_files.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/wm_surface.h b/source/blender/windowmanager/wm_surface.h
index e924b1e47ad63e0108880e63c83a7b75d1bce013..c94a195a9769272ff16134ddcc589b4c44801c2e 100644
--- a/source/blender/windowmanager/wm_surface.h
+++ b/source/blender/windowmanager/wm_surface.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/wm_window.h b/source/blender/windowmanager/wm_window.h
index b003a4f92e760da04313c3561e800a68266f97e3..6755776841386abbc8555164b264b243dd3ad509 100644
--- a/source/blender/windowmanager/wm_window.h
+++ b/source/blender/windowmanager/wm_window.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2007 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2007 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/xr/intern/wm_xr.c b/source/blender/windowmanager/xr/intern/wm_xr.c
index 36bd03ed3ea370653492d85be5ea15c2681c5454..e46af0657a53bd7086af40e08d10a28cc0db3bbc 100644
--- a/source/blender/windowmanager/xr/intern/wm_xr.c
+++ b/source/blender/windowmanager/xr/intern/wm_xr.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/xr/intern/wm_xr_action.c b/source/blender/windowmanager/xr/intern/wm_xr_action.c
index b5a606b4298b183807488622a6c450a964251f5b..f60034287002e0e78a3eec7b8deba4ca4a7fbf67 100644
--- a/source/blender/windowmanager/xr/intern/wm_xr_action.c
+++ b/source/blender/windowmanager/xr/intern/wm_xr_action.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/xr/intern/wm_xr_actionmap.c b/source/blender/windowmanager/xr/intern/wm_xr_actionmap.c
index 076f279ccbbf07b1e38f129920a1f9c5a9998480..0c356ab2b2ef87291fe660d109f2c75f08b3d9ae 100644
--- a/source/blender/windowmanager/xr/intern/wm_xr_actionmap.c
+++ b/source/blender/windowmanager/xr/intern/wm_xr_actionmap.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/xr/intern/wm_xr_draw.c b/source/blender/windowmanager/xr/intern/wm_xr_draw.c
index 5d0163af5e180fe2ee40792f1a54623f63ec6d52..303ecca17f0e51572d10d2d2af0a3c9ad15967ed 100644
--- a/source/blender/windowmanager/xr/intern/wm_xr_draw.c
+++ b/source/blender/windowmanager/xr/intern/wm_xr_draw.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/xr/intern/wm_xr_intern.h b/source/blender/windowmanager/xr/intern/wm_xr_intern.h
index e2368901757c3ad83b577807e9f32240afef22bf..0e7c4d18753776ad4ab60319a18bb2fd4848f366 100644
--- a/source/blender/windowmanager/xr/intern/wm_xr_intern.h
+++ b/source/blender/windowmanager/xr/intern/wm_xr_intern.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/xr/intern/wm_xr_operators.c b/source/blender/windowmanager/xr/intern/wm_xr_operators.c
index 9c2eaefd61c6ca8589a79898f0cc04f144d8be29..54800a5cd3520b5ba8c7b0e43e49bfe330b39fcf 100644
--- a/source/blender/windowmanager/xr/intern/wm_xr_operators.c
+++ b/source/blender/windowmanager/xr/intern/wm_xr_operators.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/xr/intern/wm_xr_session.c b/source/blender/windowmanager/xr/intern/wm_xr_session.c
index bad735ee5983167673ad3f98e16d238c924b9301..59b4eb003638d7e4ec82636f3b402a5c449fe82a 100644
--- a/source/blender/windowmanager/xr/intern/wm_xr_session.c
+++ b/source/blender/windowmanager/xr/intern/wm_xr_session.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/blender/windowmanager/xr/wm_xr.h b/source/blender/windowmanager/xr/wm_xr.h
index caba6038c568c765d6b6e83f63ffe6f5a49c8cb5..0d7d8f70525b4d7dd8f6a2e684d093e36f7475ee 100644
--- a/source/blender/windowmanager/xr/wm_xr.h
+++ b/source/blender/windowmanager/xr/wm_xr.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup wm
diff --git a/source/creator/CMakeLists.txt b/source/creator/CMakeLists.txt
index 4a399ca98234ff587483799e4c0ae4f6e8d9d264..e804db0568700f0a09bdcedb83e2b3c8ce48c0b9 100644
--- a/source/creator/CMakeLists.txt
+++ b/source/creator/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 blender_include_dirs(
   ../../intern/clog
diff --git a/source/creator/blender_launcher_win32.c b/source/creator/blender_launcher_win32.c
index f19438ad907e969744a1d959b3dc7ffbc32fde16..242105e5e05579e7d3a3ccad0577a9f7a030c787 100644
--- a/source/creator/blender_launcher_win32.c
+++ b/source/creator/blender_launcher_win32.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <Windows.h>
 #include <strsafe.h>
diff --git a/source/creator/buildinfo.c b/source/creator/buildinfo.c
index c476694e4b541d707c64c7dfab6885e60b090419..884efe1eec257f9a20947413c5242c0405aa7bb8 100644
--- a/source/creator/buildinfo.c
+++ b/source/creator/buildinfo.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup creator
diff --git a/source/creator/creator.c b/source/creator/creator.c
index d69e4d075fd2ec653132792bd473bcdbe12005cc..ec85786c7a4ec8c78dca7c589ce0262358112a17 100644
--- a/source/creator/creator.c
+++ b/source/creator/creator.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup creator
diff --git a/source/creator/creator_args.c b/source/creator/creator_args.c
index 11bea595690797a31af2aa1992595f8af16848a2..736f1c34de6edc03c34586db1ac24291579252f4 100644
--- a/source/creator/creator_args.c
+++ b/source/creator/creator_args.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup creator
diff --git a/source/creator/creator_intern.h b/source/creator/creator_intern.h
index 2260da8db111da1cca9670c433d09f3513372634..29cef78e88c10b49a844ca492498b172cf9227d4 100644
--- a/source/creator/creator_intern.h
+++ b/source/creator/creator_intern.h
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/creator/creator_signals.c b/source/creator/creator_signals.c
index c23664d746fe34a61a8a6629c81db7a818faa6a8..76423d7ba436ac4eb881af16205437b6035b57fc 100644
--- a/source/creator/creator_signals.c
+++ b/source/creator/creator_signals.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup creator
diff --git a/tests/blender_as_python_module/CMakeLists.txt b/tests/blender_as_python_module/CMakeLists.txt
index 98e081672e95cad7c93eb97d6c241df89a520b54..334b328824655923c69129a40f5963e531ee54cc 100644
--- a/tests/blender_as_python_module/CMakeLists.txt
+++ b/tests/blender_as_python_module/CMakeLists.txt
@@ -1,23 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2021, Blender Foundation
-# All rights reserved.
-#
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2021 Blender Foundation. All rights reserved.
 
 function(add_blender_as_python_module_test testname testscript)
   if(NOT TEST_PYTHON_EXE)
diff --git a/tests/blender_as_python_module/import_bpy.py b/tests/blender_as_python_module/import_bpy.py
index bdc0277cfecbefb76f4c585c4a4bb09d05127a28..ea75c0f2fe6f39bd3fe9247b351a189481e1ef00 100644
--- a/tests/blender_as_python_module/import_bpy.py
+++ b/tests/blender_as_python_module/import_bpy.py
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # Just import bpy and see if there are any dynamic loader errors.
 import bpy
diff --git a/tests/check_deprecated.py b/tests/check_deprecated.py
index 7595bb4ff816d88e3910cb24897601d29f221fb9..089e027522914f0a5516438ea28bb3e76ad10c3b 100644
--- a/tests/check_deprecated.py
+++ b/tests/check_deprecated.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/gtests/runner/CMakeLists.txt b/tests/gtests/runner/CMakeLists.txt
index 732ae08822bc8e1bb657123bd772e2e39b15503f..97b95851be86bf9ac3d0ee991c577244e9e9a3c8 100644
--- a/tests/gtests/runner/CMakeLists.txt
+++ b/tests/gtests/runner/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2020, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2020 Blender Foundation. All rights reserved.
 
 # Build the test runner. This runner takes care of running all GTests, i.e.
 # the code that was built using the blender_add_test_lib() CMake macro (see
diff --git a/tests/gtests/runner/blender_test.cc b/tests/gtests/runner/blender_test.cc
index fbce7a4283fc49c6f8aeb765bcb2dc75ff9832d7..0e504eb461f953b749c6a84f2e8aa7febb95e740 100644
--- a/tests/gtests/runner/blender_test.cc
+++ b/tests/gtests/runner/blender_test.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2020 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2020 Blender Foundation. All rights reserved. */
 
 /* This file is intentionally left blank. It is necessary for CMake to have a source file for each
  * executable. However, the blender_tests test runner only comprises of statically linked library
diff --git a/tests/gtests/testing/CMakeLists.txt b/tests/gtests/testing/CMakeLists.txt
index d557b27f272ce7fe54973e6bdabe5b3d570d13d3..5d3881a6c06f5d6e7dfb92a9cd7922c7a5dd60b4 100644
--- a/tests/gtests/testing/CMakeLists.txt
+++ b/tests/gtests/testing/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2014, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2014 Blender Foundation. All rights reserved.
 
 add_definitions(${GFLAGS_DEFINES})
 add_definitions(${GLOG_DEFINES})
diff --git a/tests/gtests/testing/testing_main.cc b/tests/gtests/testing/testing_main.cc
index 6238101b3196ad5d42ce34b28be261ac21965bd7..1310a8b6477a2c55d96cc1e96e522291b4f55269 100644
--- a/tests/gtests/testing/testing_main.cc
+++ b/tests/gtests/testing/testing_main.cc
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2014 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2014 Blender Foundation. All rights reserved. */
 
 #include "testing/testing.h"
 
diff --git a/tests/performance/api/__init__.py b/tests/performance/api/__init__.py
index 2dc9283c44aa112ef9130eb0e739092500489fb2..2bd7b98d4065c9351bb8efc11a5dc05dc67fafd6 100644
--- a/tests/performance/api/__init__.py
+++ b/tests/performance/api/__init__.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 from .environment import TestEnvironment
 from .device import TestDevice, TestMachine
diff --git a/tests/performance/api/config.py b/tests/performance/api/config.py
index 5e7ee380068b6861e79583d16ef5a89a3de418db..03d699cfdfb8694ee3b52041b07e225fe15230f6 100644
--- a/tests/performance/api/config.py
+++ b/tests/performance/api/config.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import fnmatch
 import json
diff --git a/tests/performance/api/device.py b/tests/performance/api/device.py
index 1e930a12352711dae4bda4771d2a1c43be2fd89b..fb11c5948e685eda1c383441cc642090897c3801 100644
--- a/tests/performance/api/device.py
+++ b/tests/performance/api/device.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import platform
 import subprocess
diff --git a/tests/performance/api/environment.py b/tests/performance/api/environment.py
index 4db8152412023d9286ca2bacea52dd3d2334bb69..61a7c5dff7b2c4178642a39bddd06aec970bc280 100644
--- a/tests/performance/api/environment.py
+++ b/tests/performance/api/environment.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import base64
 import glob
diff --git a/tests/performance/api/graph.py b/tests/performance/api/graph.py
index 721b04d1f430d9e2259eebec6bb2c059a199e4d2..6c9ba70141f3c0eceda364b3184d384112e7c522 100644
--- a/tests/performance/api/graph.py
+++ b/tests/performance/api/graph.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 from . import TestQueue
 
diff --git a/tests/performance/api/test.py b/tests/performance/api/test.py
index 7e8193d2c213075d5817a394175346cb7ba25838..72e72463cd1b9c9a717218828e0f4c047368d710 100644
--- a/tests/performance/api/test.py
+++ b/tests/performance/api/test.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import abc
 import fnmatch
diff --git a/tests/performance/tests/__init__.py b/tests/performance/tests/__init__.py
index ac3e613174f9806ac15335fb8b3c929d5daf51ec..9881313609aae2c16a19dae665af4268bd54431d 100644
--- a/tests/performance/tests/__init__.py
+++ b/tests/performance/tests/__init__.py
@@ -1 +1 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
diff --git a/tests/performance/tests/animation.py b/tests/performance/tests/animation.py
index c1a5c77860f90fb2b17433b616c0555fa44ab454..8dad1889a0fbbc4b7a7811b7d583e17a20d69b60 100644
--- a/tests/performance/tests/animation.py
+++ b/tests/performance/tests/animation.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import api
 import os
diff --git a/tests/performance/tests/blend_load.py b/tests/performance/tests/blend_load.py
index 5fe498fd3d788986d06716d732f9cd7384e64d70..fa16eaf2dada0c46c66f04c3bc29a1708b8eda05 100644
--- a/tests/performance/tests/blend_load.py
+++ b/tests/performance/tests/blend_load.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import api
 import os
diff --git a/tests/performance/tests/cycles.py b/tests/performance/tests/cycles.py
index e702fa445d23bbcf9ff3b84ce1ce8f295ca8df29..b782f910ed93c895ec476a4c2a11babecf2fd5d9 100644
--- a/tests/performance/tests/cycles.py
+++ b/tests/performance/tests/cycles.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import api
 import os
diff --git a/tests/python/CMakeLists.txt b/tests/python/CMakeLists.txt
index 04fdb380da23e18c6f1bf85ddd062ef9915267d7..013825d1dd90771375a5b4b3d53bdde4ad9cbb54 100644
--- a/tests/python/CMakeLists.txt
+++ b/tests/python/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # Use '--write-blend=/tmp/test.blend' to view output
 
diff --git a/tests/python/alembic_export_tests.py b/tests/python/alembic_export_tests.py
index 23a4a376533fb196657639241f25f36756b74355..f6c05d955c96370bf8ba212c5be310743429afac 100644
--- a/tests/python/alembic_export_tests.py
+++ b/tests/python/alembic_export_tests.py
@@ -1,21 +1,5 @@
 #!/usr/bin/env python3
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/batch_import.py b/tests/python/batch_import.py
index 134ee091bb7a6b3bb4cb4f875365188d377d4efc..a6b44bc7478a6080c2d55831a9009d8645c71883 100644
--- a/tests/python/batch_import.py
+++ b/tests/python/batch_import.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bevel_operator.py b/tests/python/bevel_operator.py
index 726bf4b5b03c2871cb3271a90d138a39b58e1376..64cf034bb85c701ccc9149d98039309be6d056f7 100644
--- a/tests/python/bevel_operator.py
+++ b/tests/python/bevel_operator.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # To run all tests, use
 # BLENDER_VERBOSE=1 blender path/to/bevel_regression.blend --python path/to/bevel_operator.py -- --run-all-tests
diff --git a/tests/python/bl_alembic_io_test.py b/tests/python/bl_alembic_io_test.py
index da75d4f0731c4b8c5a00e5a4fec8fef59c7391ed..f348038091166cdb634406ec07e46db29f74f40e 100644
--- a/tests/python/bl_alembic_io_test.py
+++ b/tests/python/bl_alembic_io_test.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_animation_fcurves.py b/tests/python/bl_animation_fcurves.py
index 9017c1ee037a050f926482e1a8404f67a932404e..b93c201dc08c92c8de8658ddea05e1011a0d7e73 100644
--- a/tests/python/bl_animation_fcurves.py
+++ b/tests/python/bl_animation_fcurves.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_blendfile_io.py b/tests/python/bl_blendfile_io.py
index 4123f06b7c4fcff20d8b0c0d4e3bea841f1f4707..f79ee2a240b77601efb59e3fce988c4bf2b96dc9 100644
--- a/tests/python/bl_blendfile_io.py
+++ b/tests/python/bl_blendfile_io.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 # ./blender.bin --background -noaudio --python tests/python/bl_blendfile_io.py
 import bpy
diff --git a/tests/python/bl_blendfile_liblink.py b/tests/python/bl_blendfile_liblink.py
index 4cf81c9beaebbddf0a4e0f3668acc80959965d89..9a6aa9c9e10d3f16878dd67db6065bd7681bf58a 100644
--- a/tests/python/bl_blendfile_liblink.py
+++ b/tests/python/bl_blendfile_liblink.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 # ./blender.bin --background -noaudio --python tests/python/bl_blendfile_liblink.py
 import bpy
diff --git a/tests/python/bl_blendfile_library_overrides.py b/tests/python/bl_blendfile_library_overrides.py
index e0da1082ee03c4466d320bfe44d9c5406d3ba400..6d9530e771e2753eecf805bfe1149ea8d137830d 100644
--- a/tests/python/bl_blendfile_library_overrides.py
+++ b/tests/python/bl_blendfile_library_overrides.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 # ./blender.bin --background -noaudio --python tests/python/bl_blendfile_library_overrides.py -- --output-dir=/tmp/
 import pathlib
diff --git a/tests/python/bl_blendfile_utils.py b/tests/python/bl_blendfile_utils.py
index c87b47e5ce708598ea76467017c0265dd2d702e2..3cb23070d4a692ae88df8c94e874da4f26d3f400 100644
--- a/tests/python/bl_blendfile_utils.py
+++ b/tests/python/bl_blendfile_utils.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import os
 import pprint
diff --git a/tests/python/bl_bundled_modules.py b/tests/python/bl_bundled_modules.py
index 012eaf8246d2eb399b1c5e9c6254f72a28fcdf8c..4a055960f835b02033193fc4d46b6db09dfd51a3 100644
--- a/tests/python/bl_bundled_modules.py
+++ b/tests/python/bl_bundled_modules.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_constraints.py b/tests/python/bl_constraints.py
index a2690fa4e1116f611775392de5931be2c3029e82..dc4f06d4799e718b541c5f7b3fe6926460041952 100644
--- a/tests/python/bl_constraints.py
+++ b/tests/python/bl_constraints.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 """
 ./blender.bin --background -noaudio --factory-startup --python tests/python/bl_constraints.py -- --testdir /path/to/lib/tests/constraints
diff --git a/tests/python/bl_id_management.py b/tests/python/bl_id_management.py
index 615c0b13d9deb05320764397a768be2c2cc69ff3..9ca53b4214b7bf3b6801ef70c258e785d92fe825 100644
--- a/tests/python/bl_id_management.py
+++ b/tests/python/bl_id_management.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 # ./blender.bin --background -noaudio --python tests/python/bl_id_management.py -- --verbose
 import bpy
diff --git a/tests/python/bl_keymap_completeness.py b/tests/python/bl_keymap_completeness.py
index e9315a7a425a878a432fef0c20963f7327b63835..ee24a531f53025c15caa4f22211508ad6ff95b68 100644
--- a/tests/python/bl_keymap_completeness.py
+++ b/tests/python/bl_keymap_completeness.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_keymap_validate.py b/tests/python/bl_keymap_validate.py
index 705a026e4415dfce54b80dade0dfe1e44bf3baca..ce2022f6ae7c2160e6cb8b70d0f6f53d2364a725 100644
--- a/tests/python/bl_keymap_validate.py
+++ b/tests/python/bl_keymap_validate.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_load_addons.py b/tests/python/bl_load_addons.py
index 60f44c9452a1e79f905e35989e2ced989a62bd18..8fee31f7a2b61dab7dab613a3f3b68d116b5f6b6 100644
--- a/tests/python/bl_load_addons.py
+++ b/tests/python/bl_load_addons.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_load_py_modules.py b/tests/python/bl_load_py_modules.py
index c6ad53b1f748d9b3bd712cad1912eb604c50dac5..4d4196d1f64107138b74efd05cd78d8a5ec41b58 100644
--- a/tests/python/bl_load_py_modules.py
+++ b/tests/python/bl_load_py_modules.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_mesh_modifiers.py b/tests/python/bl_mesh_modifiers.py
index 746e7a183a36e0a2a8d03719e9b38df3a1454c97..3b653402083c901acd9a139ab2eb545c22b95e72 100644
--- a/tests/python/bl_mesh_modifiers.py
+++ b/tests/python/bl_mesh_modifiers.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_mesh_validate.py b/tests/python/bl_mesh_validate.py
index 8c5d914f92af792b7f1e8dc9eb3e5b4001aa40ec..38d84c42a558c2f0778cc9dbdae53e3462476e74 100644
--- a/tests/python/bl_mesh_validate.py
+++ b/tests/python/bl_mesh_validate.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_pyapi_bpy_path.py b/tests/python/bl_pyapi_bpy_path.py
index ddb13cfe2cef50a1e2ad2f6fff6f2835a02e520c..e755da1da79cf41c7595a8dcedadef42843f1c98 100644
--- a/tests/python/bl_pyapi_bpy_path.py
+++ b/tests/python/bl_pyapi_bpy_path.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 # ./blender.bin --background -noaudio --python tests/python/bl_pyapi_bpy_path.py -- --verbose
 import unittest
diff --git a/tests/python/bl_pyapi_bpy_utils_units.py b/tests/python/bl_pyapi_bpy_utils_units.py
index bdb64fc361e5adc3a73f49439035f4d96d1657ef..2e0ac5550feddeab37c7151e8cce576e2e304e5d 100644
--- a/tests/python/bl_pyapi_bpy_utils_units.py
+++ b/tests/python/bl_pyapi_bpy_utils_units.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 # ./blender.bin --background -noaudio --python tests/python/bl_pyapi_bpy_utils_units.py -- --verbose
 import unittest
diff --git a/tests/python/bl_pyapi_idprop.py b/tests/python/bl_pyapi_idprop.py
index 4cee39fafb06d45b2f153f1bbe292ff2b2125ba7..0e93ba0b69085a9d538b38e019819873e5532d97 100644
--- a/tests/python/bl_pyapi_idprop.py
+++ b/tests/python/bl_pyapi_idprop.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 # ./blender.bin --background -noaudio --python tests/python/bl_pyapi_idprop.py -- --verbose
 import bpy
diff --git a/tests/python/bl_pyapi_idprop_datablock.py b/tests/python/bl_pyapi_idprop_datablock.py
index ddea613aae1872a654b7cad2e8b79de3ca185662..42c9ec1b16f3d71bcbf9640a1c368d3a9dd45b7f 100644
--- a/tests/python/bl_pyapi_idprop_datablock.py
+++ b/tests/python/bl_pyapi_idprop_datablock.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # ./blender.bin --background -noaudio --python tests/python/bl_pyapi_idprop_datablock.py -- --verbose
 
diff --git a/tests/python/bl_pyapi_mathutils.py b/tests/python/bl_pyapi_mathutils.py
index c3a22be421ae32fa1df11399b8ee208c0288dd6b..23c97d7fc24d8ce8bd08e4ef71d26d2eba0812f1 100644
--- a/tests/python/bl_pyapi_mathutils.py
+++ b/tests/python/bl_pyapi_mathutils.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 # ./blender.bin --background -noaudio --python tests/python/bl_pyapi_mathutils.py -- --verbose
 import unittest
diff --git a/tests/python/bl_pyapi_prop_array.py b/tests/python/bl_pyapi_prop_array.py
index 2f38b67d7a1c887d175ac300653efa7b08e465d1..1132914b14c04d0862efbc82d3ddafe3f9e810ab 100644
--- a/tests/python/bl_pyapi_prop_array.py
+++ b/tests/python/bl_pyapi_prop_array.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 # ./blender.bin --background -noaudio --python tests/python/bl_pyapi_prop_array.py -- --verbose
 import bpy
diff --git a/tests/python/bl_rigging_symmetrize.py b/tests/python/bl_rigging_symmetrize.py
index b47ace7f3f1280bfbf3225fec040afe899fa90f2..dcd0ab65ced71a65a97b73d6c7f78e2379d2f9a6 100644
--- a/tests/python/bl_rigging_symmetrize.py
+++ b/tests/python/bl_rigging_symmetrize.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_rna_defaults.py b/tests/python/bl_rna_defaults.py
index fc895dbddfcfed3d677cbe700e9ee6640d7a6745..55095804696dac3d15af50833ae41af8357f954e 100644
--- a/tests/python/bl_rna_defaults.py
+++ b/tests/python/bl_rna_defaults.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 # ./blender.bin --background -noaudio --factory-startup --python tests/python/bl_rna_defaults.py
 
diff --git a/tests/python/bl_rna_manual_reference.py b/tests/python/bl_rna_manual_reference.py
index 00e40fe571b78ba29463622ac6e78aca473b01b1..70f218f0bb2172e188f7c84769479db8c0218d60 100644
--- a/tests/python/bl_rna_manual_reference.py
+++ b/tests/python/bl_rna_manual_reference.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_rst_completeness.py b/tests/python/bl_rst_completeness.py
index 3266621c43b982a17409896bf9247476b98a999f..59e532c433bd25e7a8bc16d8cb2d51bac181d80a 100644
--- a/tests/python/bl_rst_completeness.py
+++ b/tests/python/bl_rst_completeness.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_run_operators.py b/tests/python/bl_run_operators.py
index 6554dd8e4145301c72478716cb7a7b234dac51af..7e73ec163a4c01b4451358dc1f19033694b8dc8c 100644
--- a/tests/python/bl_run_operators.py
+++ b/tests/python/bl_run_operators.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_run_operators_event_simulate.py b/tests/python/bl_run_operators_event_simulate.py
index adaacf6cd8322225aefae234665ec4937096c1f3..56f96847d0b5718dde8128c2bb0e5899de3c7d83 100644
--- a/tests/python/bl_run_operators_event_simulate.py
+++ b/tests/python/bl_run_operators_event_simulate.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_test.py b/tests/python/bl_test.py
index 6315ffbfa9da693133c68b764fc71adace4bf0d2..7e79639a226d28550172b80ff33796305310827b 100644
--- a/tests/python/bl_test.py
+++ b/tests/python/bl_test.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/bl_usd_import_test.py b/tests/python/bl_usd_import_test.py
index 6f157c3f9284ede33d206da04a389ed67cb64d1f..fc2fc819c8d6e060ab778e04f04d29cc2300f153 100644
--- a/tests/python/bl_usd_import_test.py
+++ b/tests/python/bl_usd_import_test.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/boolean_operator.py b/tests/python/boolean_operator.py
index 7d4de7143dd1cbb750fa4f79b07ed7e6c1be095c..afad48fad36aa51ebe4b8f92f5c09b677e86aac5 100644
--- a/tests/python/boolean_operator.py
+++ b/tests/python/boolean_operator.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/collada/CMakeLists.txt b/tests/python/collada/CMakeLists.txt
index 1b24875578e75ad0f1bd424d6723ea2e95bbef42..ecc092250c95f36a971ed0c175090439d878cead 100644
--- a/tests/python/collada/CMakeLists.txt
+++ b/tests/python/collada/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # --env-system-scripts allows to run without the install target.
 
diff --git a/tests/python/collada/animation/test_animation_simple.py b/tests/python/collada/animation/test_animation_simple.py
index 95c20cbcf3101f63403c00e8292fb9f2b3c4dd99..038ad522109c3cef9a3b5939c1a7d1935fe1c73a 100644
--- a/tests/python/collada/animation/test_animation_simple.py
+++ b/tests/python/collada/animation/test_animation_simple.py
@@ -1,21 +1,5 @@
 #!/usr/bin/env python3
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 """
 Call as follows:
diff --git a/tests/python/collada/mesh/test_mesh_simple.py b/tests/python/collada/mesh/test_mesh_simple.py
index e48ddcd447735429ba21554952d8129c8bb5678a..badd6c53d068772189087926a788ad2ccb5a4978 100644
--- a/tests/python/collada/mesh/test_mesh_simple.py
+++ b/tests/python/collada/mesh/test_mesh_simple.py
@@ -1,21 +1,5 @@
 #!/usr/bin/env python3
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 """
 Call as follows:
diff --git a/tests/python/compositor_render_tests.py b/tests/python/compositor_render_tests.py
index 199e1c13b8e8f73b439f6c4946fc041451597f82..b7283b3a55ed4a127034b5e97bc3c661ec90d46e 100644
--- a/tests/python/compositor_render_tests.py
+++ b/tests/python/compositor_render_tests.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import argparse
 import os
diff --git a/tests/python/curve_to_mesh.py b/tests/python/curve_to_mesh.py
index 654cfc750d76c4ec6c2037daffe8980991e5dd91..d37e7ef23a873a7ccc6ffad5872dd02e02e4f660 100644
--- a/tests/python/curve_to_mesh.py
+++ b/tests/python/curve_to_mesh.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # To run all tests, use
 # BLENDER_VERBOSE=1 ./bin/blender ../lib/tests/modeling/curve_to_mesh.blend --python ../blender/tests/python/bl_curve_to_mesh.py -- --run-all-tests
diff --git a/tests/python/cycles_render_tests.py b/tests/python/cycles_render_tests.py
index b0938c06ecf1a3f28bf5e83159243c0e30313e31..598e4b6828c265722048c5fc46f35bf0d6eea859 100644
--- a/tests/python/cycles_render_tests.py
+++ b/tests/python/cycles_render_tests.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import argparse
 import os
diff --git a/tests/python/deform_modifiers.py b/tests/python/deform_modifiers.py
index d1241e4d9f0e790cded1002a7be597b46c7b7bb6..cf0d1924e8f103f2f172b203c8e227e93c82edc8 100644
--- a/tests/python/deform_modifiers.py
+++ b/tests/python/deform_modifiers.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/eevee_render_tests.py b/tests/python/eevee_render_tests.py
index 6a21afc7c9aec5aebe7e23de977b0da74109992f..bd14fadb3b360b73eae49071a1f064485051ed7a 100644
--- a/tests/python/eevee_render_tests.py
+++ b/tests/python/eevee_render_tests.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import argparse
 import os
diff --git a/tests/python/ffmpeg_tests.py b/tests/python/ffmpeg_tests.py
index 92734b5bc7ddd69ed96270b98ba027113753b360..abbe38193b5769f9d1ab35af95978921c2897106 100644
--- a/tests/python/ffmpeg_tests.py
+++ b/tests/python/ffmpeg_tests.py
@@ -1,21 +1,5 @@
 #!/usr/bin/env python3
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/geo_node_test.py b/tests/python/geo_node_test.py
index 5da28977ba45f78ae5009aababd59c21a75fc00d..65ea500d2a1e3ecff742f8e39802e97a991ab7a8 100644
--- a/tests/python/geo_node_test.py
+++ b/tests/python/geo_node_test.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/modifiers.py b/tests/python/modifiers.py
index 1d9242046b3ee1268c47e1509ddd24ae5c83f7a8..2433ecd29f9a7bb80ea7bd14f8c672cc74730961 100644
--- a/tests/python/modifiers.py
+++ b/tests/python/modifiers.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/modules/global_report.py b/tests/python/modules/global_report.py
index 89715e526fa5270eb267dc382324408f16c51826..f0b2ef5b1737a6d16959373611ab77325db5c3f7 100755
--- a/tests/python/modules/global_report.py
+++ b/tests/python/modules/global_report.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 # Generate a HTML page that links to all test reports.
 
diff --git a/tests/python/modules/mesh_test.py b/tests/python/modules/mesh_test.py
index e3990bc207b281a99ddd72a8243e43dbded2c04f..730c0d61a2645f7bfe347b99e36b5dba1f868f1a 100644
--- a/tests/python/modules/mesh_test.py
+++ b/tests/python/modules/mesh_test.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/modules/render_report.py b/tests/python/modules/render_report.py
index d7b198b3203896fbdf9f291dc8204a2bf94794d9..cae81af3144b2f26aef41d9822551319fb55a470 100755
--- a/tests/python/modules/render_report.py
+++ b/tests/python/modules/render_report.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 """
 Compare renders or screenshots against reference versions and generate
diff --git a/tests/python/modules/test_utils.py b/tests/python/modules/test_utils.py
index 9c23d51181303fa49045cfe3a500355edd6c2bf9..18b4eb78f4b410617d2e46017efcf8b1add8336a 100755
--- a/tests/python/modules/test_utils.py
+++ b/tests/python/modules/test_utils.py
@@ -1,21 +1,5 @@
 #!/usr/bin/env python3
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/opengl_draw_tests.py b/tests/python/opengl_draw_tests.py
index a2d9d5103825b46b7bc78d96d764becba22a6a50..cdeb2efbd16984bc081f19b4b7315726b4e79bc0 100644
--- a/tests/python/opengl_draw_tests.py
+++ b/tests/python/opengl_draw_tests.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import argparse
 import os
diff --git a/tests/python/operators.py b/tests/python/operators.py
index e2a5e78cff7dcefc1df4275e02849ef5d3a2743f..645ce31390d08bd1b2da9328c923a51a34c9d8c5 100644
--- a/tests/python/operators.py
+++ b/tests/python/operators.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/pep8.py b/tests/python/pep8.py
index fde868927829b189fcbfefce50c8d4e3df436b0a..9a2871c9ed5a0ad9e50fe4af9a0f950575aa0964 100644
--- a/tests/python/pep8.py
+++ b/tests/python/pep8.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8-80 compliant>
 
diff --git a/tests/python/physics_cloth.py b/tests/python/physics_cloth.py
index 83f1366037cbb9a50ef913b39d559069cf84cc41..c507a85c087ffd3687cade43dd7cc73d5905c65e 100644
--- a/tests/python/physics_cloth.py
+++ b/tests/python/physics_cloth.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/physics_dynamic_paint.py b/tests/python/physics_dynamic_paint.py
index d1f31b2718b6402210689950d3c5db5a0c09a16f..f5fabb23adca9c1b0c180d44cfd37cdcebb38ada 100644
--- a/tests/python/physics_dynamic_paint.py
+++ b/tests/python/physics_dynamic_paint.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/physics_ocean.py b/tests/python/physics_ocean.py
index 59eb71aa9f1b704f328af69f2daf519e67dffc5d..7a02fc9de4ba528eab3f261ac5a23b2670340000 100644
--- a/tests/python/physics_ocean.py
+++ b/tests/python/physics_ocean.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/physics_particle_instance.py b/tests/python/physics_particle_instance.py
index ce0bdffcd8b9b49cee8791f5233b9928ea31ab2d..d31ce68c7b203aa1fa75c1c4dca49ef4cc7ec529 100644
--- a/tests/python/physics_particle_instance.py
+++ b/tests/python/physics_particle_instance.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/physics_particle_system.py b/tests/python/physics_particle_system.py
index 4f54b87e8b0e168a76a86b587f1c7c57a1b42181..d304d11a894df28df6893a2b6b58d0d00fb477db 100644
--- a/tests/python/physics_particle_system.py
+++ b/tests/python/physics_particle_system.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/physics_softbody.py b/tests/python/physics_softbody.py
index 6d4d4cc08d5bba2415044158759f73fb32fbe51a..b167529ccca2f16b6f45283774e57681f3dda447 100644
--- a/tests/python/physics_softbody.py
+++ b/tests/python/physics_softbody.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/rna_array.py b/tests/python/rna_array.py
index 623766aa0a16d0f35bd02bfa21d8cfdd7df17ca7..77d9b9cb3e79c76d461328768165008cf52efc66 100644
--- a/tests/python/rna_array.py
+++ b/tests/python/rna_array.py
@@ -1,4 +1,4 @@
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import unittest
 import random
diff --git a/tests/python/rna_info_dump.py b/tests/python/rna_info_dump.py
index bca912f39cf42d7dc9e339725772c09a2d8e93d8..afedf670f2fa6667ec180da04f0fb91f0d5d7136 100644
--- a/tests/python/rna_info_dump.py
+++ b/tests/python/rna_info_dump.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/rst_to_doctree_mini.py b/tests/python/rst_to_doctree_mini.py
index b5e643ac46d24a49b38e978ce0e30c55fad41efc..3466c915aa0725eb756225e738b112728f037c8d 100644
--- a/tests/python/rst_to_doctree_mini.py
+++ b/tests/python/rst_to_doctree_mini.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/tests/python/sequencer_render_tests.py b/tests/python/sequencer_render_tests.py
index 54c9d68817b9a79d721399020539b09de20e5c79..8d3a44be8a5e71b0979d859c359e9af0b3ee3b85 100644
--- a/tests/python/sequencer_render_tests.py
+++ b/tests/python/sequencer_render_tests.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import argparse
 import os
diff --git a/tests/python/view_layer/CMakeLists.txt b/tests/python/view_layer/CMakeLists.txt
index 3cac2b6d85f6434f0b9757c42633039e8d86e62a..56dc1c8b5e9ae48b3c4874b9256502637c17a15f 100644
--- a/tests/python/view_layer/CMakeLists.txt
+++ b/tests/python/view_layer/CMakeLists.txt
@@ -1,19 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # --env-system-scripts allows to run without the install target.
 
diff --git a/tests/python/workbench_render_tests.py b/tests/python/workbench_render_tests.py
index 03a85c58dd9ac2cf7d00d2c027bb8aabe9564b06..3ceb0fb32264832e9f397e82e12cbdd62c020ab2 100644
--- a/tests/python/workbench_render_tests.py
+++ b/tests/python/workbench_render_tests.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Apache License, Version 2.0
+# SPDX-License-Identifier: Apache-2.0
 
 import argparse
 import os