cur_dir := $(dir $(lastword $(MAKEFILE_LIST))) obj-y := $(patsubst $(cur_dir)%,%,$(wildcard $(cur_dir)*.c)) obj-y := $(obj-y:.c=.o) ifeq ($(CRC32_ROM),1) ccflags-y += -Iutils/rom_utils EXCLUDE_OBJS := crc32.o else EXCLUDE_OBJS := crc32_rom.o endif obj-y := $(filter-out $(EXCLUDE_OBJS),$(obj-y)) ifeq ($(MAKE_CRC32_TABLE),1) ccflags-y += -DMAKE_CRC32_TABLE endif