--- a/GNUmakefile
+++ b/GNUmakefile
@@ -204,7 +204,10 @@
 	-rmdir $(js_output_dir)
 
 snowball$(EXEEXT): $(COMPILER_OBJECTS)
-	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^
+	$(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) $(LDFLAGS_FOR_BUILD) -o $@ $^
+
+compiler/%.o: compiler/%.c
+	$(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) -c $< -o $@
 
 $(COMPILER_OBJECTS): $(COMPILER_HEADERS)