When cross-building, the CFLAGS and CXXFLAGS are for the target, and don't

apply to the build tools. If we want to allow build tool flags input, we
should have separate inputs (BUILD_CFLAGS and BUILD_CXXFLAGS, perhaps).

llvm-svn: 85607

llvm/Makefile

@@ -95,6 +95,8 @@ cross-compile-build-tools:
 	$(Verb) if [ ! -f BuildTools/Makefile ]; then \
           $(MKDIR) BuildTools; \
 	  cd BuildTools ; \
+	  unset CFLAGS ; \
+	  unset CXXFLAGS ; \
 	  $(PROJ_SRC_DIR)/configure --build=$(BUILD_TRIPLE) \
 		--host=$(BUILD_TRIPLE) --target=$(BUILD_TRIPLE); \
 	  cd .. ; \