-ifneq ($(wildcard $(LLVMGCCDIR)),)
-PARALLEL_DIRS := GCCLibraries libdummy libprofile libtrace
+ifeq ($(LLVMGCC_MAJVERS),4)
+PARALLEL_DIRS :=
+install all::
+ $(Echo) "Warning: These runtime libraries only need to be built with"
+ $(Echo) "Warning: llvm-gcc version 3. They are automatically included"
+ $(Echo) "Warning: with llvm-gcc version 4 and beyond"
+else
+ifneq ($(wildcard $(LLVMGCC)),)
+PARALLEL_DIRS := libdummy libprofile GC