EEPROM_DEFAULTS_new := $(EEPROM_DEFAULTS) -include obj/eeprom_defaults EXTRA_CLEAN_FILES += obj/eeprom_defaults ifneq (was $(EEPROM_DEFAULTS_new),$(EEPROM_DEFAULTS_old)) obj/eeprom_defaults: | $(OBJDIR) echo "EEPROM_DEFAULTS_old = was $(EEPROM_DEFAULTS_new)" > $@ .PHONY: obj/eeprom_defaults endif obj/eeprom.avr.avr.o: obj/eeprom_defaults