Runtime: Always build compiler-rt using the Clang we just built, instead of the

system CC.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107328 91177308-0d34-0410-b5e6-96231b3b80d8

runtime/Makefile

@@ -50,6 +50,7 @@ BuildRuntimeLibraries:
 	$(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
 	  ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
 	  ProjObjRoot=$(PROJ_OBJ_DIR) \
+	  CC="$(ToolDir)/clang -no-integrated-as" \
 	  $(RuntimeDirs:%=clang_%)
 .PHONY: BuildRuntimeLibraries
 CleanRuntimeLibraries: