CMake: Make language explicit for per-file strict flags removal

Referenced by issue #55611, Blender crashes on save.

build_files/cmake/macros.cmake

@@ -1120,28 +1120,39 @@ endmacro()
 # note, we can only append flags on a single file so we need to negate the options.
 # at the moment we cant shut up ffmpeg deprecations, so use this, but will
 # probably add more removals here.
-macro(remove_strict_flags_file
+macro(remove_strict_c_flags_file
 	filenames)
-
 	foreach(_SOURCE ${ARGV})
-
 		if(CMAKE_COMPILER_IS_GNUCC OR
 		  (CMAKE_C_COMPILER_ID MATCHES "Clang"))
-
 			set_source_files_properties(${_SOURCE}
 				PROPERTIES
 					COMPILE_FLAGS "${C_REMOVE_STRICT_FLAGS}"
 			)
 		endif()
-
 		if(MSVC)
 			# TODO
 		endif()
-
 	endforeach()
-
 	unset(_SOURCE)
+endmacro()
 
+macro(remove_strict_cxx_flags_file
+	filenames)
+	remove_strict_c_flags_file(${filenames} ${ARHV})
+	foreach(_SOURCE ${ARGV})
+		if(CMAKE_COMPILER_IS_GNUCC OR
+		  (CMAKE_C_COMPILER_ID MATCHES "Clang"))
+			set_source_files_properties(${_SOURCE}
+				PROPERTIES
+					COMPILE_FLAGS "${C_REMOVE_STRICT_FLAGS}"
+			)
+		endif()
+		if(MSVC)
+			# TODO
+		endif()
+	endforeach()
+	unset(_SOURCE)
 endmacro()
 
 # External libs may need 'signed char' to be default.

intern/audaspace/CMakeLists.txt

@@ -243,7 +243,7 @@ if(WITH_CODEC_FFMPEG)
 		ffmpeg/AUD_FFMPEGWriter.h
 	)
 
-	remove_strict_flags_file(
+	remove_strict_cxx_flags_file(
 		ffmpeg/AUD_FFMPEGFactory.cpp
 		ffmpeg/AUD_FFMPEGReader.cpp
 		ffmpeg/AUD_FFMPEGWriter.cpp

source/blender/blenkernel/CMakeLists.txt

@@ -409,7 +409,7 @@ if(WITH_CODEC_FFMPEG)
 	)
 	add_definitions(-DWITH_FFMPEG)
 
-	remove_strict_flags_file(
+	remove_strict_c_flags_file(
 		intern/writeffmpeg.c
 	)
 endif()

source/blender/imbuf/CMakeLists.txt

@@ -139,7 +139,7 @@ if(WITH_CODEC_FFMPEG)
 	)
 	add_definitions(-DWITH_FFMPEG)
 
-	remove_strict_flags_file(
+	remove_strict_c_flags_file(
 		intern/indexer.c
 		intern/util.c
 		intern/anim_movie.c

source/gameengine/VideoTexture/CMakeLists.txt

@@ -105,7 +105,7 @@ if(WITH_CODEC_FFMPEG)
 	)
 	add_definitions(-DWITH_FFMPEG)
 
-	remove_strict_flags_file(
+	remove_strict_cxx_flags_file(
 		VideoFFmpeg.cpp
 		VideoDeckLink
 		DeckLink