-CFLAGS_NO_WARN := $(call cc-option,-Wno-unused-variable) \
- $(call cc-option,-Wno-unused-but-set-variable) \
- $(call cc-option,-Wno-unused-label)
-CFLAGS += $(CFLAGS_NO_WARN)
+ccflags-y := $(call cc-option,-Wno-unused-variable) \
+ $(call cc-option,-Wno-unused-but-set-variable) \
+ $(call cc-option,-Wno-unused-label)