--- a/source/Makefile.in
+++ b/source/Makefile.in
@@ -54,8 +54,9 @@ clean::
 
 
 # stringify
+CC_FOR_BUILD ?= $(CC)
 stringify: stringify.c
-	$(CC) $(CFLAGS) $< -o $@
+	$(CC_FOR_BUILD) $< -o $@
 clean::
 	$(RM) stringify