Linux: Move Mesa software OpenGL libraries to sub-directory

Allows to put libraries which are always needed by Blender into the
lib/ folder and not worry about OpenGL libraries picked up from there.

Currently no functional changes as we do not yet have dynamic libraries
which we load at startup. It allows to use direct linking of oneAPI
Cycles device (see D15397), also it is something which would need to
happen to support USD/Hydra/TBB compiler as dynamic libraries in the
future.

Differential Revision: https://developer.blender.org/D15403

release/bin/blender-softwaregl

@@ -2,16 +2,16 @@
 BF_DIST_BIN=$(dirname "$0")
 BF_PROGRAM="blender" # BF_PROGRAM=$(basename "$0")-bin
 
-LD_LIBRARY_PATH=${BF_DIST_BIN}/lib:${LD_LIBRARY_PATH}
+LD_LIBRARY_PATH=${BF_DIST_BIN}/lib/mesa:${LD_LIBRARY_PATH}
 
 if [ -n "$LD_LIBRARYN32_PATH" ]; then
-    LD_LIBRARYN32_PATH=${BF_DIST_BIN}/lib:${LD_LIBRARYN32_PATH}
+    LD_LIBRARYN32_PATH=${BF_DIST_BIN}/lib/mesa:${LD_LIBRARYN32_PATH}
 fi
 if [ -n "$LD_LIBRARYN64_PATH" ]; then
-    LD_LIBRARYN64_PATH=${BF_DIST_BIN}/lib:${LD_LIBRARYN64_PATH}
+    LD_LIBRARYN64_PATH=${BF_DIST_BIN}/lib/mesa:${LD_LIBRARYN64_PATH}
 fi
 if [ -n "$LD_LIBRARY_PATH_64" ]; then
-    LD_LIBRARY_PATH_64=${BF_DIST_BIN}/lib:${LD_LIBRARY_PATH_64}
+    LD_LIBRARY_PATH_64=${BF_DIST_BIN}/lib/mesa:${LD_LIBRARY_PATH_64}
 fi
 
 # Workaround for half-transparent windows when compiz is enabled

source/creator/CMakeLists.txt

@@ -511,7 +511,7 @@ if(UNIX AND NOT APPLE)
     endif()
 
     if(EXISTS ${LIBDIR}/mesa)
-      install(DIRECTORY ${LIBDIR}/mesa/lib DESTINATION ".")
+      install(DIRECTORY ${LIBDIR}/mesa/lib/ DESTINATION "lib/mesa/")
 
       install(
         PROGRAMS