ENH: Added C++ filesystem library linking - neccessary for GCC-8

CMakeLists.txt

@@ -39,8 +39,6 @@ endif()
 #--------------------------------#
 set(CMAKE_CXX_STANDARD 17)
 
-#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" )
-
 if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Intel" )
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -xHost" )
 elseif( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC" ) 

src/CMakeLists.txt

@@ -52,13 +52,19 @@ if ("${BUILD_LIB}" STREQUAL "yes")
 		NormalizationStrategy/NormalizationStrategy.cpp
 	)
 
+    # FileSystem C++ library - has to be linked manually in GCC-8
+	set(CXX_FILESYSTEM_LIB "")
+	if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+		set(CXX_FILESYSTEM_LIB "stdc++fs")
+	endif()
+
     target_link_libraries(
         lib4neuro
 
         PRIVATE
             exprtk_wrap
             ${Boost_LIBRARIES}
-			stdc++fs
+			${CXX_FILESYSTEM_LIB}
     )
 
 	target_include_directories(