-CFLAGS += -mbackchain -msoft-float $(cflags-y)
-CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
-AFLAGS += $(aflags-y)
+KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y)
+KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
+KBUILD_AFLAGS += $(aflags-y)