Build: hide most symbols on macOS on Linux to avoid conflicts

This means symbols from Blender itself and most external libraries. We can't
just hide all because that breaks some libraries. The better solution would
be to rebuild all library dependencies with hidden visibility.

Fixes T75223: Luxrender add-on failing to load on macOS

build_files/cmake/platform/platform_apple.cmake

@@ -449,10 +449,13 @@ if(${XCODE_VERSION} VERSION_EQUAL 5 OR ${XCODE_VERSION} VERSION_GREATER 5)
   # Xcode 5 is always using CLANG, which has too low template depth of 128 for libmv
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ftemplate-depth=1024")
 endif()
-# Get rid of eventually clashes, we export some symbols explicitly as local
+
+# Avoid conflicts with Luxrender, and other plug-ins that may use the same
+# libraries as Blender with a different version or build options.
 set(PLATFORM_LINKFLAGS
   "${PLATFORM_LINKFLAGS} -Xlinker -unexported_symbols_list -Xlinker '${CMAKE_SOURCE_DIR}/source/creator/osx_locals.map'"
 )
+set(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -fvisibility=hidden")
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
 set(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -stdlib=libc++")

build_files/cmake/platform/platform_unix.cmake

@@ -405,13 +405,6 @@ if(WITH_LLVM)
   endif()
 endif()
 
-if(WITH_LLVM OR WITH_SDL_DYNLOAD)
-  # Fix for conflict with Mesa llvmpipe
-  set(PLATFORM_LINKFLAGS
-    "${PLATFORM_LINKFLAGS} -Wl,--version-script='${CMAKE_SOURCE_DIR}/source/creator/blender.map'"
-  )
-endif()
-
 if(WITH_OPENSUBDIV)
   find_package_wrapper(OpenSubdiv)
 
@@ -601,3 +594,10 @@ elseif(CMAKE_C_COMPILER_ID MATCHES "Intel")
   set(PLATFORM_CFLAGS "-pipe -fPIC -funsigned-char -fno-strict-aliasing")
   set(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -static-intel")
 endif()
+
+# Avoid conflicts with Mesa llvmpipe, Luxrender, and other plug-ins that may
+# use the same libraries as Blender with a different version or build options.
+set(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -fvisibility=hidden")
+set(PLATFORM_LINKFLAGS
+  "${PLATFORM_LINKFLAGS} -Wl,--version-script='${CMAKE_SOURCE_DIR}/source/creator/blender.map'"
+)

source/creator/blender.map

@@ -6,21 +6,71 @@
 
 {
 global:
-	*;
-	*_boost*;
+  *;
+  *_boost*;
 local:
-	*default_error_condition*;
-	*llvm*;
-	*LLVM*;
-	decodeInstruction;
-	ForceStackAlign;
-	_Jv_RegisterClasses;
-	Name;
-	NumNamedVarArgParams;
-	X86CompilationCallback*;
-	*boost*;
-	*SDL*;
-	*embree*;
-	cu*;
+  al*;
+  *Alembic*;
+  av*;
+  blosc*;
+  *boost*;
+  *ceres*;
+  *cineon*;
+  *COLLADA*;
+  cu*;
+  decodeInstruction;
+  *default_error_condition*;
+  *dpx*;
+  *embree*;
+  ff_*;
+  fftw*;
+  FLAC*;
+  ForceStackAlign;
+  FT_*;
+  *GeneratedSaxParser*;
+  *google*;
+  gsm*;
+  Gsm*;
+  html*;
+  id3tag*;
+  *Iex*;
+  *Ilm*;
+  *Imath*;
+  *Imf*;
+  jack_*;
+  jpeg_*;
+  jsimd**;
+  _Jv_RegisterClasses;
+  lame_*;
+  *llvm*;
+  *LLVM*;
+  *MathML*;
+  *mkldnn*;
+  Name;
+  NumNamedVarArgParams;
+  oc_*;
+  ogg*;
+  *oidn*;
+  *OpenColorIO*;
+  *OpenImageIO*;
+  *OpenSubdiv*;
+  *openvdb*;
+  opj_*;
+  opus_*;
+  *OSL*;
+  png_*;
+  *SDL*;
+  *squish*;
+  *tbb*;
+  *TIFF*;
+  *tinyformat*;
+  vorbis*;
+  vp8*;
+  vp9*;
+  vpx*;
+  x264_*;
+  X86CompilationCallback*;
+  xml*;
+  xvid*;
+  *YAML*;
 };
-

source/creator/osx_locals.map

@@ -1,10 +1,66 @@
 ## The symbols will be treated as if they were marked as __private_extern__
 ## (aka visibility=hidden) and will not be global in the output file
+al*
+*Alembic*
+av*
+blosc*
 *boost*
-*__ZNSt6vector*
+*ceres*
+*cineon*
+*COLLADA*
+cu*
+decodeInstruction
+*default_error_condition*
+*dpx*
+*embree*
+ff_*
+fftw*
+FLAC*
+ForceStackAlign
+FT_*
+*GeneratedSaxParser*
+*google*
+gsm*
+Gsm*
+html*
+id3tag*
+*Iex*
+*Ilm*
+*Imath*
+*Imf*
+jack_*
+jpeg_*
+jsimd**
+_Jv_RegisterClasses
+lame_*
 *llvm*
 *LLVM*
+*MathML*
+*mkldnn*
+Name
+NumNamedVarArgParams
+oc_*
+ogg*
+*oidn*
+*OpenColorIO*
+*OpenImageIO*
+*OpenSubdiv*
+*openvdb*
+opj_*
+opus_*
 *OSL*
-*embree*
-cu*
-
+png_*
+*SDL*
+*squish*
+*tbb*
+*TIFF*
+*tinyformat*
+vorbis*
+vp8*
+vp9*
+vpx*
+x264_*
+X86CompilationCallback*
+xml*
+xvid*
+*YAML*