[make] try to fix build directory dependency problem

Makefile

@@ -119,7 +119,7 @@ else
 	echo let version_extra = None > _build/src/compiler/version.ml
 endif
 
-build_src:build_dirs $(BUILD_SRC) _build/src/syntax/parser.ml _build/src/compiler/version.ml
+build_src: | build_dirs $(BUILD_SRC) _build/src/syntax/parser.ml _build/src/compiler/version.ml
 
 haxe: build_src
 	$(MAKE) -f $(MAKEFILENAME) build_pass_1