CMakeLists.txt

# ***** BEGIN GPL LICENSE BLOCK *****
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# The Original Code is Copyright (C) 2006, Blender Foundation
# All rights reserved.
#
# The Original Code is: all of this file.
#
# Contributor(s): Jacques Beaurain.
#
# ***** END GPL LICENSE BLOCK *****

#-----------------------------------------------------------------------------
# We don't allow in-source builds. This causes no end of troubles because
# all out-of-source builds will use the CMakeCache.txt file there and even
# build the libs and objects in it.

if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
	if(NOT DEFINED WITH_IN_SOURCE_BUILD)
		message(FATAL_ERROR
			"CMake generation for blender is not allowed within the source directory!"
			"\n Remove \"${CMAKE_SOURCE_DIR}/CMakeCache.txt\" and try again from another folder, e.g.:"
			"\n "
			"\n rm CMakeCache.txt"
			"\n cd .."
			"\n mkdir cmake-make"
			"\n cd cmake-make"
			"\n cmake ../blender"
			"\n "
			"\n Alternately define WITH_IN_SOURCE_BUILD to force this option (not recommended!)"
		)
	endif()
endif()

cmake_minimum_required(VERSION 3.5)

if(NOT EXECUTABLE_OUTPUT_PATH)
	set(FIRST_RUN TRUE)
else()
	set(FIRST_RUN FALSE)
endif()

# this starts out unset
list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/build_files/cmake/Modules")
list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/build_files/cmake/platform")

# avoid having empty buildtype
if(NOT DEFINED CMAKE_BUILD_TYPE_INIT)
	set(CMAKE_BUILD_TYPE_INIT "Release")
endif()

# quiet output for Makefiles, 'make -s' helps too
# set_property(GLOBAL PROPERTY RULE_MESSAGES OFF)

# global compile definitions since add_definitions() adds for all.

if(NOT (${CMAKE_VERSION} VERSION_LESS 3.0))
	set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS
		$<$<CONFIG:Debug>:DEBUG;_DEBUG>
		$<$<CONFIG:Release>:NDEBUG>
		$<$<CONFIG:MinSizeRel>:NDEBUG>
		$<$<CONFIG:RelWithDebInfo>:NDEBUG>
	)
else()
	# keep until CMake-3.0 is min requirement
	set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DEBUG           DEBUG _DEBUG)
	set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_RELEASE         NDEBUG)
	set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_MINSIZEREL      NDEBUG)
	set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_RELWITHDEBINFO  NDEBUG)
endif()

#-----------------------------------------------------------------------------
# Set policy

# see "cmake --help-policy CMP0003"
# So library linking is more sane
cmake_policy(SET CMP0003 NEW)

# So BUILDINFO and BLENDERPATH strings are automatically quoted
cmake_policy(SET CMP0005 NEW)

# So syntax problems are errors
cmake_policy(SET CMP0010 NEW)

# Input directories must have CMakeLists.txt
cmake_policy(SET CMP0014 NEW)

#-----------------------------------------------------------------------------
# Load some macros.
include(build_files/cmake/macros.cmake)


#-----------------------------------------------------------------------------
# Initialize project.

blender_project_hack_pre()

project(Blender)

blender_project_hack_post()

enable_testing()

#-----------------------------------------------------------------------------
# Redirect output files

set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR}/bin CACHE INTERNAL "" FORCE)
set(LIBRARY_OUTPUT_PATH ${CMAKE_BINARY_DIR}/lib CACHE INTERNAL "" FORCE)
set(TESTS_OUTPUT_DIR ${EXECUTABLE_OUTPUT_PATH}/tests CACHE INTERNAL "" FORCE)

#-----------------------------------------------------------------------------
# Set default config options

get_blender_version()


#-----------------------------------------------------------------------------
# Platform Specific Defaults

# list of var-names
set(_init_vars)

# initialize to ON
macro(option_defaults_init)
	foreach(_var ${ARGV})
		set(${_var} ON)
		list(APPEND _init_vars "${_var}")
	endforeach()
	unset(_var)
endmacro()

# remove from namespace
macro(option_defaults_clear)
	foreach(_var ${_init_vars})
		unset(${_var})
	endforeach()
	unset(_var)
	unset(_init_vars)
endmacro()


# values to initialize WITH_****
option_defaults_init(
	_init_BUILDINFO
	_init_CODEC_FFMPEG
	_init_CYCLES_OSL
	_init_CYCLES_OPENSUBDIV
	_init_IMAGE_OPENEXR
	_init_INPUT_NDOF
	_init_JACK
	_init_OPENCOLLADA
	_init_OPENCOLORIO
	_init_SDL
	_init_FFTW3
	_init_GAMEENGINE
	_init_OPENSUBDIV
)

# customize...
if(UNIX AND NOT APPLE)
	# some of these libraries are problematic on Linux
	# disable less important dependencies by default
	set(_init_CODEC_FFMPEG                   OFF)
	set(_init_CYCLES_OSL                     OFF)
	set(_init_CYCLES_OPENSUBDIV              OFF)
	set(_init_IMAGE_OPENEXR                  OFF)
	set(_init_JACK                           OFF)
	set(_init_OPENCOLLADA                    OFF)
	set(_init_OPENCOLORIO                    OFF)
	set(_init_SDL                            OFF)
	set(_init_FFTW3                          OFF)
	set(_init_OPENSUBDIV                     OFF)
elseif(WIN32)
	set(_init_JACK                           OFF)
elseif(APPLE)
	set(_init_JACK                           OFF)
	set(_init_OPENSUBDIV                     OFF)
endif()


#-----------------------------------------------------------------------------
# Options

# First platform specific non-cached vars
if(UNIX AND NOT (APPLE OR HAIKU))
	set(WITH_X11 ON)
endif()

# Blender internal features
option(WITH_BLENDER "Build blender (disable to build only the blender player)" ON)
mark_as_advanced(WITH_BLENDER)

option(WITH_INTERNATIONAL "Enable I18N (International fonts and text)" ON)

option(WITH_PYTHON        "Enable Embedded Python API  (only disable for development)" ON)
option(WITH_PYTHON_SECURITY "Disables execution of scripts within blend files by default" ON) 
mark_as_advanced(WITH_PYTHON)  # dont want people disabling this unless they really know what they are doing.
mark_as_advanced(WITH_PYTHON_SECURITY)  # some distributions see this as a security issue, rather than have them patch it, make a build option.

option(WITH_PYTHON_SAFETY "Enable internal API error checking to track invalid data to prevent crash on access (at the expense of some effeciency, only enable for development)." OFF)
mark_as_advanced(WITH_PYTHON_SAFETY)
option(WITH_PYTHON_MODULE "Enable building as a python module which runs without a user interface, like running regular blender in background mode (experimental, only enable for development), installs to PYTHON_SITE_PACKAGES (or CMAKE_INSTALL_PREFIX if WITH_INSTALL_PORTABLE is enabled)." OFF)
if(APPLE)
	option(WITH_PYTHON_FRAMEWORK "Enable building using the Python available in the framework (OSX only)" OFF)
endif()

option(WITH_BUILDINFO     "Include extra build details (only disable for development & faster builds)" ${_init_BUILDINFO})
if(${CMAKE_VERSION} VERSION_LESS 2.8.8)
	# add_library OBJECT arg unsupported
	set(WITH_BUILDINFO OFF)
endif()
set(BUILDINFO_OVERRIDE_DATE "" CACHE STRING "Use instead of the current date for reproducable builds (empty string disables this option)")
set(BUILDINFO_OVERRIDE_TIME "" CACHE STRING "Use instead of the current time for reproducable builds (empty string disables this option)")
set(CPACK_OVERRIDE_PACKAGENAME "" CACHE STRING "Use instead of the standard packagename (empty string disables this option)")
mark_as_advanced(CPACK_OVERRIDE_PACKAGENAME)
mark_as_advanced(BUILDINFO_OVERRIDE_DATE)
mark_as_advanced(BUILDINFO_OVERRIDE_TIME)

option(WITH_IK_ITASC      "Enable ITASC IK solver (only disable for development & for incompatible C++ compilers)" ON)
option(WITH_IK_SOLVER     "Enable Legacy IK solver (only disable for development)" ON)
option(WITH_FFTW3         "Enable FFTW3 support (Used for smoke, ocean sim, and audio effects)" ${_init_FFTW3})
option(WITH_BULLET        "Enable Bullet (Physics Engine)" ON)
option(WITH_SYSTEM_BULLET "Use the systems bullet library (currently unsupported due to missing features in upstream!)" )
mark_as_advanced(WITH_SYSTEM_BULLET)
option(WITH_GAMEENGINE    "Enable Game Engine" ${_init_GAMEENGINE})
if(APPLE)
	set(WITH_GAMEENGINE_DECKLINK OFF)
else()
	option(WITH_GAMEENGINE_DECKLINK "Support BlackMagicDesign DeckLink cards in the Game Engine" ON)
endif()
option(WITH_PLAYER        "Build Player" OFF)
option(WITH_OPENCOLORIO   "Enable OpenColorIO color management" ${_init_OPENCOLORIO})

option(WITH_CLAY_ENGINE    "Enable Clay engine" ON)

# Compositor
option(WITH_COMPOSITOR         "Enable the tile based nodal compositor" ON)

option(WITH_OPENSUBDIV    "Enable OpenSubdiv for surface subdivision" _init_OPENSUBDIV)

option(WITH_OPENVDB       "Enable features relying on OpenVDB" OFF)
option(WITH_OPENVDB_BLOSC "Enable blosc compression for OpenVDB, only enable if OpenVDB was built with blosc support" OFF)

# GHOST Windowing Library Options
option(WITH_GHOST_DEBUG   "Enable debugging output for the GHOST library" OFF)
mark_as_advanced(WITH_GHOST_DEBUG)

option(WITH_GHOST_SDL    "Enable building Blender against SDL for windowing rather than the native APIs" OFF)
mark_as_advanced(WITH_GHOST_SDL)

if(WITH_X11)
	option(WITH_GHOST_XDND    "Enable drag'n'drop support on X11 using XDND protocol" ON)
endif()

# Misc...
option(WITH_HEADLESS      "Build without graphical support (renderfarm, server mode only)" OFF)
mark_as_advanced(WITH_HEADLESS)

option(WITH_AUDASPACE    "Build with blenders audio library (only disable if you know what you're doing!)" ON)
option(WITH_SYSTEM_AUDASPACE "Build with external audaspace library installed on the system (only enable if you know what you're doing!)" OFF)
mark_as_advanced(WITH_AUDASPACE)
mark_as_advanced(WITH_SYSTEM_AUDASPACE)

if(NOT WITH_AUDASPACE)
	set(WITH_SYSTEM_AUDASPACE OFF)
endif()

option(WITH_OPENMP        "Enable OpenMP (has to be supported by the compiler)" ON)
if(UNIX AND NOT APPLE)
	option(WITH_OPENMP_STATIC "Link OpenMP statically (only used by the release environment)" OFF)
	mark_as_advanced(WITH_OPENMP_STATIC)
endif()

if(WITH_X11)
	option(WITH_X11_XINPUT    "Enable X11 Xinput (tablet support and unicode input)"  ON)
	option(WITH_X11_XF86VMODE "Enable X11 video mode switching"                       ON)
	option(WITH_X11_XFIXES    "Enable X11 XWayland cursor warping workaround"         ON)
	option(WITH_X11_ALPHA     "Enable X11 transparent background"                     ON)
endif()

if(UNIX AND NOT APPLE)
	option(WITH_SYSTEM_GLEW "Use GLEW OpenGL wrapper library provided by the operating system" OFF)
	option(WITH_SYSTEM_GLES "Use OpenGL ES library provided by the operating system"           ON)
else()
	# not an option for other OS's
	set(WITH_SYSTEM_GLEW OFF)
	set(WITH_SYSTEM_GLES OFF)
endif()


# (unix defaults to System OpenJPEG On)
option(WITH_SYSTEM_OPENJPEG "Use the operating systems OpenJPEG library" OFF)

if(UNIX AND NOT APPLE)
	option(WITH_SYSTEM_EIGEN3 "Use the systems Eigen3 library" OFF)
endif()


# Modifiers
option(WITH_MOD_FLUID           "Enable Elbeem Modifier (Fluid Simulation)" ON)
option(WITH_MOD_SMOKE           "Enable Smoke Modifier (Smoke Simulation)" ON)
option(WITH_MOD_REMESH          "Enable Remesh Modifier" ON)
# option(WITH_MOD_CLOTH_ELTOPO    "Enable Experimental cloth solver" OFF)  # this is now only available in a branch
# mark_as_advanced(WITH_MOD_CLOTH_ELTOPO)
option(WITH_MOD_OCEANSIM        "Enable Ocean Modifier" OFF)

# Image format support
option(WITH_OPENIMAGEIO         "Enable OpenImageIO Support (http://www.openimageio.org)" ON)
option(WITH_IMAGE_OPENEXR       "Enable OpenEXR Support (http://www.openexr.com)" ${_init_IMAGE_OPENEXR})
option(WITH_IMAGE_OPENJPEG      "Enable OpenJpeg Support (http://www.openjpeg.org)" ON)
option(WITH_IMAGE_TIFF          "Enable LibTIFF Support" ON)
option(WITH_IMAGE_DDS           "Enable DDS Image Support" ON)
option(WITH_IMAGE_CINEON        "Enable CINEON and DPX Image Support" ON)
option(WITH_IMAGE_HDR           "Enable HDR Image Support" ON)
option(WITH_IMAGE_FRAMESERVER   "Enable image FrameServer Support for rendering" ON)

# Audio/Video format support
option(WITH_CODEC_AVI           "Enable Blenders own AVI file support (raw/jpeg)" ON)
option(WITH_CODEC_FFMPEG        "Enable FFMPeg Support (http://ffmpeg.org)" ${_init_CODEC_FFMPEG})
option(WITH_CODEC_SNDFILE       "Enable libsndfile Support (http://www.mega-nerd.com/libsndfile)" OFF)

# Alembic support
option(WITH_ALEMBIC             "Enable Alembic Support" OFF)
option(WITH_ALEMBIC_HDF5        "Enable Legacy Alembic Support (not officially supported)" OFF)

# 3D format support
# Disable opencollada when we don't have precompiled libs
option(WITH_OPENCOLLADA   "Enable OpenCollada Support (http://www.opencollada.org)" ${_init_OPENCOLLADA})

# Sound output
option(WITH_SDL           "Enable SDL for sound and joystick support" ${_init_SDL})
option(WITH_OPENAL        "Enable OpenAL Support (http://www.openal.org)" ON)
option(WITH_JACK          "Enable JACK Support (http://www.jackaudio.org)" ${_init_JACK})
if(UNIX AND NOT APPLE)
	option(WITH_JACK_DYNLOAD  "Enable runtime dynamic JACK libraries loading" OFF)
endif()
if(UNIX AND NOT APPLE)
	option(WITH_SDL_DYNLOAD  "Enable runtime dynamic SDL libraries loading" OFF)
endif()

# Compression
option(WITH_LZO           "Enable fast LZO compression (used for pointcache)" ON)
option(WITH_LZMA          "Enable best LZMA compression, (used for pointcache)" ON)
if(UNIX AND NOT APPLE)
	option(WITH_SYSTEM_LZO    "Use the system LZO library" OFF)
endif()

# Camera/motion tracking
option(WITH_LIBMV         "Enable Libmv structure from motion library" ON)
option(WITH_LIBMV_SCHUR_SPECIALIZATIONS "Enable fixed-size schur specializations." OFF)
mark_as_advanced(WITH_LIBMV_SCHUR_SPECIALIZATIONS)

# Logging/unbit test libraries.
option(WITH_SYSTEM_GFLAGS   "Use system-wide Gflags instead of a bundled one" OFF)
option(WITH_SYSTEM_GLOG     "Use system-wide Glog instead of a bundled one" OFF)
mark_as_advanced(WITH_SYSTEM_GFLAGS)
mark_as_advanced(WITH_SYSTEM_GLOG)

# Freestyle
option(WITH_FREESTYLE     "Enable Freestyle (advanced edges rendering)" ON)

# Misc
if(WIN32)
	option(WITH_INPUT_IME "Enable Input Method Editor (IME) for complex Asian character input" ON)
endif()
option(WITH_INPUT_NDOF "Enable NDOF input devices (SpaceNavigator and friends)" ${_init_INPUT_NDOF})
option(WITH_RAYOPTIMIZATION	"Enable use of SIMD (SSE) optimizations for the raytracer" ON)
if(UNIX AND NOT APPLE)
	option(WITH_INSTALL_PORTABLE "Install redistributeable runtime, otherwise install into CMAKE_INSTALL_PREFIX" ON)
	option(WITH_STATIC_LIBS "Try to link with static libraries, as much as possible, to make blender more portable across distributions" OFF)
	if(WITH_STATIC_LIBS)
		option(WITH_BOOST_ICU "Boost uses ICU library (required for linking with static Boost built with libicu)." OFF)
		mark_as_advanced(WITH_BOOST_ICU)
	endif()
endif()

option(WITH_PYTHON_INSTALL       "Copy system python into the blender install folder" ON)
if(WITH_PYTHON_INSTALL OR (WITH_AUDASPACE AND NOT WITH_SYSTEM_AUDASPACE))
	set(PYTHON_NUMPY_PATH            "" CACHE PATH "Path to python site-packages or dist-packages containing 'numpy' module")
	mark_as_advanced(PYTHON_NUMPY_PATH)
	set(PYTHON_NUMPY_INCLUDE_DIRS ${PYTHON_NUMPY_PATH}/numpy/core/include CACHE PATH "Path to the include directory of the numpy module")
	mark_as_advanced(PYTHON_NUMPY_INCLUDE_DIRS)
endif()
if(WITH_PYTHON_INSTALL)
	option(WITH_PYTHON_INSTALL_NUMPY "Copy system numpy into the blender install folder"  ON)

	if(UNIX AND NOT APPLE)
		option(WITH_PYTHON_INSTALL_REQUESTS "Copy system requests into the blender install folder" ON)
		set(PYTHON_REQUESTS_PATH "" CACHE PATH "Path to python site-packages or dist-packages containing 'requests' module")
		mark_as_advanced(PYTHON_REQUESTS_PATH)
	endif()
endif()

option(WITH_CPU_SSE              "Enable SIMD instruction if they're detected on the host machine" ON)
mark_as_advanced(WITH_CPU_SSE)

# Cycles
option(WITH_CYCLES					"Enable Cycles Render Engine" ON)
option(WITH_CYCLES_STANDALONE		"Build Cycles standalone application" OFF)
option(WITH_CYCLES_STANDALONE_GUI	"Build Cycles standalone with GUI" OFF)
option(WITH_CYCLES_OSL				"Build Cycles with OSL support" ${_init_CYCLES_OSL})
option(WITH_CYCLES_OPENSUBDIV		"Build Cycles with OpenSubdiv support" ${_init_CYCLES_OPENSUBDIV})
option(WITH_CYCLES_CUDA_BINARIES	"Build Cycles CUDA binaries" OFF)
option(WITH_CYCLES_CUBIN_COMPILER	"Build cubins with nvrtc based compiler instead of nvcc" OFF)
set(CYCLES_CUDA_BINARIES_ARCH sm_20 sm_21 sm_30 sm_35 sm_37 sm_50 sm_52 sm_60 sm_61 CACHE STRING "CUDA architectures to build binaries for")
mark_as_advanced(CYCLES_CUDA_BINARIES_ARCH)
unset(PLATFORM_DEFAULT)
option(WITH_CYCLES_LOGGING	"Build Cycles with logging support" ON)
option(WITH_CYCLES_DEBUG	"Build Cycles with extra debug capabilities" OFF)
option(WITH_CYCLES_NATIVE_ONLY	"Build Cycles with native kernel only (which fits current CPU, use for development only)" OFF)
mark_as_advanced(WITH_CYCLES_CUBIN_COMPILER)
mark_as_advanced(WITH_CYCLES_LOGGING)
mark_as_advanced(WITH_CYCLES_DEBUG)
mark_as_advanced(WITH_CYCLES_NATIVE_ONLY)

option(WITH_CUDA_DYNLOAD "Dynamically load CUDA libraries at runtime" ON)
mark_as_advanced(WITH_CUDA_DYNLOAD)

# LLVM
option(WITH_LLVM					"Use LLVM" OFF)
if(APPLE)
	option(LLVM_STATIC					"Link with LLVM static libraries" ON) # we prefer static llvm build on Apple, dyn build possible though
else()
	option(LLVM_STATIC					"Link with LLVM static libraries" OFF)
endif()
mark_as_advanced(LLVM_STATIC)

# disable for now, but plan to support on all platforms eventually
option(WITH_MEM_JEMALLOC   "Enable malloc replacement (http://www.canonware.com/jemalloc)" ON)
mark_as_advanced(WITH_MEM_JEMALLOC)

# currently only used for BLI_mempool
option(WITH_MEM_VALGRIND "Enable extended valgrind support for better reporting" OFF)
mark_as_advanced(WITH_MEM_VALGRIND)

# Debug
option(WITH_CXX_GUARDEDALLOC "Enable GuardedAlloc for C++ memory allocation tracking (only enable for development)" OFF)
mark_as_advanced(WITH_CXX_GUARDEDALLOC)

option(WITH_ASSERT_ABORT "Call abort() when raising an assertion through BLI_assert()" OFF)
mark_as_advanced(WITH_ASSERT_ABORT)

option(WITH_BOOST					"Enable features depending on boost" ON)

# Unit testsing
option(WITH_GTESTS "Enable GTest unit testing" OFF)
option(WITH_OPENGL_TESTS "Enable OpenGL related unit testing (Experimental)" OFF)


# Documentation
if(UNIX AND NOT APPLE)
	option(WITH_DOC_MANPAGE "Create a manual page (Unix manpage)" OFF)
endif()


# OpenGL

option(WITH_GLEW_ES             "Switches to experimental copy of GLEW that has support for OpenGL ES. (temporary option for development purposes)" OFF)
option(WITH_GL_EGL              "Use the EGL OpenGL system library instead of the platform specific OpenGL system library (CGL, glX, or WGL)"       OFF)
option(WITH_GL_PROFILE_ES20     "Support using OpenGL ES 2.0. (thru either EGL or the AGL/WGL/XGL 'es20' profile)"                                  OFF)

mark_as_advanced(
	WITH_GLEW_ES
	WITH_GL_EGL
	WITH_GL_PROFILE_ES20
)

if(WIN32)
	option(WITH_GL_ANGLE "Link with the ANGLE library, an OpenGL ES 2.0 implementation based on Direct3D, instead of the system OpenGL library." OFF)
	mark_as_advanced(WITH_GL_ANGLE)
endif()

if(WITH_GLEW_ES AND WITH_SYSTEM_GLEW)
	message(WARNING Ignoring WITH_SYSTEM_GLEW and using WITH_GLEW_ES)
	set(WITH_SYSTEM_GLEW OFF)
endif()

if(WIN32)
	getDefaultWindowsPrefixBase(CMAKE_GENERIC_PROGRAM_FILES)
	set(CPACK_INSTALL_PREFIX ${CMAKE_GENERIC_PROGRAM_FILES}/${})
endif()

# Experimental support of C11 and C++11
#
# We default options to whatever default standard in the current compiler.
if(APPLE)
	set(_c11_init ON)
	set(_cxx11_init ON)
	set(WITH_C11 ON)
	set(WITH_CXX11 ON)
elseif(CMAKE_COMPILER_IS_GNUCC AND (NOT "${CMAKE_C_COMPILER_VERSION}" VERSION_LESS "6.0") AND (NOT WITH_CXX11))
	set(_c11_init ON)
else()
	set(_c11_init OFF)
endif()
set(_cxx11_init ON)

option(WITH_C11 "Build with C11 standard enabled, for development use only!" ${_c11_init})
mark_as_advanced(WITH_C11)
option(WITH_CXX11 "Build with C++11 standard enabled, for development use only!" ${_cxx11_init})
mark_as_advanced(WITH_CXX11)

# Compiler toolchain
if(CMAKE_COMPILER_IS_GNUCC)
	option(WITH_LINKER_GOLD "Use ld.gold linker which is usually faster than ld.bfd" ON)
	mark_as_advanced(WITH_LINKER_GOLD)
endif()

if(WIN32)
	# Use hardcoded paths or find_package to find externals
	option(WITH_WINDOWS_FIND_MODULES "Use find_package to locate libraries" OFF)
	mark_as_advanced(WITH_WINDOWS_FIND_MODULES)

	option(WITH_WINDOWS_CODESIGN "Use signtool to sign the final binary." OFF)
	mark_as_advanced(WITH_WINDOWS_CODESIGN)

	set(WINDOWS_CODESIGN_PFX CACHE FILEPATH  "Path to pfx file to use for codesigning.")
	mark_as_advanced(WINDOWS_CODESIGN_PFX)

	set(WINDOWS_CODESIGN_PFX_PASSWORD CACHE STRING  "password for pfx file used for codesigning.")
	mark_as_advanced(WINDOWS_CODESIGN_PFX_PASSWORD)

	option(WINDOWS_USE_VISUAL_STUDIO_FOLDERS "Organize the visual studio project according to source folders." ON)
	mark_as_advanced(WINDOWS_USE_VISUAL_STUDIO_FOLDERS)
endif()

# avoid using again
option_defaults_clear()

# end option(...)



# By default we want to install to the directory we are compiling our executables
# unless specified otherwise, which we currently do not allow
if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
	if(WIN32)
		set(CMAKE_INSTALL_PREFIX ${EXECUTABLE_OUTPUT_PATH}/\${BUILD_TYPE} CACHE PATH "default install path" FORCE)
	elseif(APPLE)
		set(CMAKE_INSTALL_PREFIX ${EXECUTABLE_OUTPUT_PATH}/\${BUILD_TYPE} CACHE PATH "default install path" FORCE)
	else()
		if(WITH_INSTALL_PORTABLE)
			set(CMAKE_INSTALL_PREFIX ${EXECUTABLE_OUTPUT_PATH} CACHE PATH "default install path" FORCE)
		endif()
	endif()
endif()



# Apple

if(APPLE)
	include(platform_apple_xcode)
endif()


#-----------------------------------------------------------------------------
# Check for conflicting/unsupported configurations

if(NOT WITH_BLENDER AND NOT WITH_PLAYER AND NOT WITH_CYCLES_STANDALONE)
	message(FATAL_ERROR
		"At least one of WITH_BLENDER or WITH_PLAYER or "
		"WITH_CYCLES_STANDALONE must be enabled, nothing to do!"
	)
endif()

if(NOT WITH_GAMEENGINE AND WITH_PLAYER)
	message(FATAL_ERROR "WITH_PLAYER requires WITH_GAMEENGINE")
endif()

if(NOT WITH_CXX11)
	if(WITH_AUDASPACE AND NOT WITH_SYSTEM_AUDASPACE)
		message(FATAL_ERROR "WITH_AUDASPACE requires WITH_CXX11")
	endif()
endif()

if(NOT WITH_AUDASPACE)
	if(WITH_OPENAL)
		message(FATAL_ERROR "WITH_OPENAL requires WITH_AUDASPACE")
	endif()
	if(WITH_JACK)
		message(FATAL_ERROR "WITH_JACK requires WITH_AUDASPACE")
	endif()
	if(WITH_GAMEENGINE)
		message(FATAL_ERROR "WITH_GAMEENGINE requires WITH_AUDASPACE")
	endif()
endif()

if(NOT WITH_SDL AND WITH_GHOST_SDL)
	message(FATAL_ERROR "WITH_GHOST_SDL requires WITH_SDL")
endif()

# python module, needs some different options
if(WITH_PYTHON_MODULE AND WITH_PLAYER)
	message(FATAL_ERROR "WITH_PYTHON_MODULE requires WITH_PLAYER to be OFF")
endif()

if(WITH_PYTHON_MODULE AND WITH_PYTHON_INSTALL)
	message(FATAL_ERROR "WITH_PYTHON_MODULE requires WITH_PYTHON_INSTALL to be OFF")
endif()


# may as well build python module without a UI
if(WITH_PYTHON_MODULE)
	set(WITH_HEADLESS ON)
endif()

if(NOT WITH_PYTHON)
	set(WITH_CYCLES OFF)
endif()

# enable boost for cycles, audaspace or i18n
# otherwise if the user disabled
if(NOT WITH_BOOST)
	# Explicitly disabled. so disable all deps.
	macro(set_and_warn
		_setting _val)
		if(${${_setting}})
			message(STATUS "'WITH_BOOST' is disabled: forcing 'set(${_setting} ${_val})'")
		endif()
		set(${_setting} ${_val})
	endmacro()

	set_and_warn(WITH_CYCLES         OFF)
	set_and_warn(WITH_INTERNATIONAL  OFF)
	set_and_warn(WITH_OPENVDB        OFF)
	set_and_warn(WITH_OPENCOLORIO    OFF)
elseif(WITH_CYCLES OR WITH_OPENIMAGEIO OR WITH_INTERNATIONAL OR
       WITH_OPENVDB OR WITH_OPENCOLORIO)
	# Keep enabled
else()
	# New dependency graph needs either Boost or C++11 for function bindings.
	if(NOT WITH_CXX11)
		# Enabled but we don't need it
		set(WITH_BOOST OFF)
	endif()
endif()

# auto enable openimageio for cycles
if(WITH_CYCLES)
	set(WITH_OPENIMAGEIO ON)

	# auto enable llvm for cycles_osl
	if(WITH_CYCLES_OSL)
		set(WITH_LLVM ON CACHE BOOL "" FORCE)
	endif()
else()
	set(WITH_CYCLES_OSL OFF)
endif()

# auto enable openimageio linking dependencies
if(WITH_OPENIMAGEIO)
	set(WITH_IMAGE_OPENEXR ON)
	set(WITH_IMAGE_TIFF ON)
endif()

# auto enable alembic linking dependencies
if(WITH_ALEMBIC)
	set(WITH_IMAGE_OPENEXR ON)
endif()

# don't store paths to libs for portable distribution
if(WITH_INSTALL_PORTABLE)
	set(CMAKE_SKIP_BUILD_RPATH TRUE)
endif()

if(WITH_GHOST_SDL OR WITH_HEADLESS)
	set(WITH_X11           OFF)
	set(WITH_X11_XINPUT    OFF)
	set(WITH_X11_XF86VMODE OFF)
	set(WITH_X11_XFIXES    OFF)
	set(WITH_X11_ALPHA     OFF)
	set(WITH_GHOST_XDND    OFF)
	set(WITH_INPUT_IME     OFF)
endif()

if(WITH_CPU_SSE)
	TEST_SSE_SUPPORT(COMPILER_SSE_FLAG COMPILER_SSE2_FLAG)
else()
	message(STATUS "SSE and SSE2 optimizations are DISABLED!")
	set(COMPILER_SSE_FLAG)
	set(COMPILER_SSE2_FLAG)
endif()

if(WITH_BUILDINFO)
	find_package(Git)
	if(NOT GIT_FOUND)
		message(WARNING "Git was not found, disabling WITH_BUILDINFO")
		set(WITH_BUILDINFO OFF)
	endif()
endif()

TEST_SHARED_PTR_SUPPORT()
TEST_UNORDERED_MAP_SUPPORT()

if(WITH_AUDASPACE)
	if(NOT WITH_SYSTEM_AUDASPACE)
		set(AUDASPACE_C_INCLUDE_DIRS "${CMAKE_SOURCE_DIR}/extern/audaspace/bindings/C" "${CMAKE_BINARY_DIR}/extern/audaspace")
		set(AUDASPACE_PY_INCLUDE_DIRS "${CMAKE_SOURCE_DIR}/extern/audaspace/bindings")
	endif()
endif()

#-----------------------------------------------------------------------------
# Check for valid directories
# ... a partial checkout may cause this.
#
# note: we need to check for a known subdir in both cases.
#       since uninitialized git submodules will give blank dirs

if(WITH_INTERNATIONAL)
	if(NOT EXISTS "${CMAKE_SOURCE_DIR}/release/datafiles/locale/languages")
		message(WARNING
			"Translation path '${CMAKE_SOURCE_DIR}/release/datafiles/locale' is missing, "
			"This is a 'git submodule', which are known not to work with bridges to other version "
			"control systems, disabling 'WITH_INTERNATIONAL'."
		)
		set(WITH_INTERNATIONAL OFF)
	endif()
endif()

if(WITH_PYTHON)
	# While we have this as an '#error' in 'bpy_capi_utils.h',
	# upgrading Python tends to cause confusion for users who build.
	# Give the error message early to make this more obvious.
	#
	# Do this before main 'platform_*' checks,
	# because UNIX will search for the old Python paths which may not exist.
	# giving errors about missing paths before this case is met.
	if(DEFINED PYTHON_VERSION AND "${PYTHON_VERSION}" VERSION_LESS "3.6")
		message(FATAL_ERROR "At least Python 3.6 is required to build")
	endif()

	if(NOT EXISTS "${CMAKE_SOURCE_DIR}/release/scripts/addons/modules")
		message(WARNING
			"Addons path '${CMAKE_SOURCE_DIR}/release/scripts/addons' is missing, "
			"This is a 'git submodule', which are known not to work with bridges to other version "
			"control systems: * CONTINUING WITHOUT ADDONS *"
		)
	endif()
endif()

#-----------------------------------------------------------------------------
# Initialize un-cached vars, avoid unused warning

# linux only, not cached
set(WITH_BINRELOC OFF)

# MACOSX only, set to avoid uninitialized
set(EXETYPE "")

# C/C++ flags
set(PLATFORM_CFLAGS)

# these are added to later on.
set(C_WARNINGS)
set(CXX_WARNINGS)

# for gcc -Wno-blah-blah
set(CC_REMOVE_STRICT_FLAGS)

# libraries to link the binary with passed to target_link_libraries()
# known as LLIBS to scons
set(PLATFORM_LINKLIBS "")

# Added to linker flags in setup_liblinks
# - CMAKE_EXE_LINKER_FLAGS
# - CMAKE_EXE_LINKER_FLAGS_DEBUG
set(PLATFORM_LINKFLAGS "")
set(PLATFORM_LINKFLAGS_DEBUG "")


#-----------------------------------------------------------------------------
#Platform specifics

if(WITH_X11)
	find_package(X11 REQUIRED)

	find_path(X11_XF86keysym_INCLUDE_PATH X11/XF86keysym.h ${X11_INC_SEARCH_PATH})
	mark_as_advanced(X11_XF86keysym_INCLUDE_PATH)

	list(APPEND PLATFORM_LINKLIBS ${X11_X11_LIB})

	if(WITH_X11_XINPUT)
		if(X11_Xinput_LIB)
			list(APPEND PLATFORM_LINKLIBS ${X11_Xinput_LIB})
		else()
			set(WITH_X11_XINPUT OFF)
		endif()
	endif()

	if(WITH_X11_XF86VMODE)
		# XXX, why dont cmake make this available?
		find_library(X11_Xxf86vmode_LIB Xxf86vm   ${X11_LIB_SEARCH_PATH})
		mark_as_advanced(X11_Xxf86vmode_LIB)
		if(X11_Xxf86vmode_LIB)
			list(APPEND PLATFORM_LINKLIBS ${X11_Xxf86vmode_LIB})
		else()
			set(WITH_X11_XF86VMODE OFF)
		endif()
	endif()

	if(WITH_X11_XFIXES)
		if(X11_Xfixes_LIB)
			list(APPEND PLATFORM_LINKLIBS ${X11_Xfixes_LIB})
		else()
			set(WITH_X11_XFIXES OFF)
		endif()
	endif()

	if(WITH_X11_ALPHA)
		find_library(X11_Xrender_LIB Xrender  ${X11_LIB_SEARCH_PATH})
		mark_as_advanced(X11_Xrender_LIB)
		if(X11_Xrender_LIB)
			list(APPEND PLATFORM_LINKLIBS ${X11_Xrender_LIB})
		else()
			set(WITH_X11_ALPHA OFF)
		endif()
	endif()

endif()


# ----------------------------------------------------------------------------
# Main Platform Checks
#
# - UNIX
# - WIN32
# - APPLE

if(UNIX AND NOT APPLE)
	include(platform_unix)
elseif(WIN32)
	include(platform_win32)
elseif(APPLE)
	include(platform_apple)
endif()

#-----------------------------------------------------------------------------
# Common.

if(NOT WITH_FFTW3 AND WITH_MOD_OCEANSIM)
	message(FATAL_ERROR "WITH_MOD_OCEANSIM requires WITH_FFTW3 to be ON")
endif()

if(WITH_CYCLES)
	if(NOT WITH_OPENIMAGEIO)
		message(FATAL_ERROR
			"Cycles requires WITH_OPENIMAGEIO, the library may not have been found. "
			"Configure OIIO or disable WITH_CYCLES"
		)
	endif()
	if(NOT WITH_BOOST)
		message(FATAL_ERROR
			"Cycles requires WITH_BOOST, the library may not have been found. "
			"Configure BOOST or disable WITH_CYCLES"
		)
	endif()

	if(WITH_CYCLES_OSL)
		if(NOT WITH_LLVM)
			message(FATAL_ERROR
				"Cycles OSL requires WITH_LLVM, the library may not have been found. "
				"Configure LLVM or disable WITH_CYCLES_OSL"
			)
		endif()
	endif()
endif()

if(WITH_INTERNATIONAL)
	if(NOT WITH_BOOST)
		message(FATAL_ERROR
			"Internationalization requires WITH_BOOST, the library may not have been found. "
			"Configure BOOST or disable WITH_INTERNATIONAL"
		)
	endif()
endif()

# See TEST_SSE_SUPPORT() for how this is defined.

# Do it globally, SSE2 is required for quite some time now.
# Doing it now allows to use SSE/SSE2 in inline headers.
if(SUPPORT_SSE_BUILD)
	set(PLATFORM_CFLAGS " ${COMPILER_SSE_FLAG} ${PLATFORM_CFLAGS}")
	add_definitions(-D__SSE__ -D__MMX__)
endif()
if(SUPPORT_SSE2_BUILD)
	set(PLATFORM_CFLAGS " ${PLATFORM_CFLAGS} ${COMPILER_SSE2_FLAG}")
	add_definitions(-D__SSE2__)
	if(NOT SUPPORT_SSE_BUILD) # dont double up
		add_definitions(-D__MMX__)
	endif()
endif()


# set the endian define
if(MSVC)
	# for some reason this fails on msvc
	add_definitions(-D__LITTLE_ENDIAN__)

# OSX-Note: as we do cross-compiling with specific set architecture,
# endianess-detection and auto-setting is counterproductive
# so we just set endianess according CMAKE_OSX_ARCHITECTURES

elseif(CMAKE_OSX_ARCHITECTURES MATCHES i386 OR CMAKE_OSX_ARCHITECTURES MATCHES x86_64)
	add_definitions(-D__LITTLE_ENDIAN__)
elseif(CMAKE_OSX_ARCHITECTURES MATCHES ppc OR CMAKE_OSX_ARCHITECTURES MATCHES ppc64)
	add_definitions(-D__BIG_ENDIAN__)

else()
	include(TestBigEndian)
	test_big_endian(_SYSTEM_BIG_ENDIAN)
	if(_SYSTEM_BIG_ENDIAN)
		add_definitions(-D__BIG_ENDIAN__)
	else()
		add_definitions(-D__LITTLE_ENDIAN__)
	endif()
	unset(_SYSTEM_BIG_ENDIAN)
endif()
if(WITH_IMAGE_OPENJPEG)
	if(WITH_SYSTEM_OPENJPEG)
		# dealt with above
		set(OPENJPEG_DEFINES "")
	else()
		set(OPENJPEG_INCLUDE_DIRS "${CMAKE_SOURCE_DIR}/extern/libopenjpeg")
		set(OPENJPEG_DEFINES "-DOPJ_STATIC")
	endif()
	# Special handling of Windows platform where openjpeg is always static.
	if(WIN32)
		set(OPENJPEG_DEFINES "-DOPJ_STATIC")
	endif()
endif()

if(NOT WITH_SYSTEM_EIGEN3)
	set(EIGEN3_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/extern/Eigen3)
endif()

#-----------------------------------------------------------------------------
# Configure OpenGL.

find_package(OpenGL)
blender_include_dirs_sys("${OPENGL_INCLUDE_DIR}")

if(WITH_SYSTEM_GLES)
	find_package_wrapper(OpenGLES)
endif()

if(WITH_GL_PROFILE_ES20)
	if(WITH_SYSTEM_GLES)
		if(NOT OPENGLES_LIBRARY)
			message(FATAL_ERROR
				"Unable to find OpenGL ES libraries. "
				"Install them or disable WITH_SYSTEM_GLES."
			)
		endif()

		list(APPEND BLENDER_GL_LIBRARIES OPENGLES_LIBRARY)

	else()
		set(OPENGLES_LIBRARY "" CACHE FILEPATH "OpenGL ES 2.0 library file")
		mark_as_advanced(OPENGLES_LIBRARY)

		list(APPEND BLENDER_GL_LIBRARIES "${OPENGLES_LIBRARY}")

		if(NOT OPENGLES_LIBRARY)
			message(FATAL_ERROR
				"To compile WITH_GL_EGL you need to set OPENGLES_LIBRARY "
				"to the file path of an OpenGL ES 2.0 library."
			)
		endif()

	endif()

	if(WIN32)
		# Setup paths to files needed to install and redistribute Windows Blender with OpenGL ES

		set(OPENGLES_DLL "" CACHE FILEPATH "OpenGL ES 2.0 redistributable DLL file")
		mark_as_advanced(OPENGLES_DLL)

		if(NOT OPENGLES_DLL)
			message(FATAL_ERROR
				"To compile WITH_GL_PROFILE_ES20 you need to set OPENGLES_DLL to the file "
				"path of an OpenGL ES 2.0 runtime dynamic link library (DLL)."
			)
		endif()

		if(WITH_GL_ANGLE)
			list(APPEND GL_DEFINITIONS -DWITH_ANGLE)