Merge commit 'e27ce281399d' from llvm.org/main into next

Author: git apple-llvm automerger

openmp/runtime/cmake/LibompHandleFlags.cmake

@@ -144,7 +144,8 @@ function(libomp_get_libflags libflags)
   endif()
   set(libflags_local ${libflags_local} ${LIBOMP_LIBFLAGS})
   libomp_setup_flags(libflags_local)
-  set(${libflags} ${libflags_local} PARENT_SCOPE)
+  libomp_string_to_list("${libflags_local}" libflags_local_list)
+  set(${libflags} ${libflags_local_list} PARENT_SCOPE)
 endfunction()
 
 # Fortran flags