makefile

linux下面5*5按键驱动以及测试程序

#Makefile for buttons

mod_dest = $(addsuffix .o,s3c24xx_buttons)
bin_dest = button_test

ifneq ($(KERNELRELEASE),)
	obj-m :=$(mod_dest)
else
	bin_dest_c = $(addsuffix .c,$(bin_dest))
	CROSS=arm-linux-
	KERNELDIR ?= /home/kevin/armsystem/linux-2.6.26.8
	#KERNELDIR=/lib/modules/$(shell uname -r)/build
	PWD := $(shell pwd)
default:$(bin_dest)
	@echo  'make the bin file: $(bin_dest) from $(bin_dest_c)'
	@echo  'make the module:  $(mod_dest)'
	$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
modules:
	$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
bin:$(bin_dest)
%: %.c
	$(CROSS)gcc -o $@ $< -static
help:
	@echo  'Cleaning targets:'
	@echo  '  clean		  - Remove most generated files'
	@echo  ''
	@echo  'Other generic targets:'
	@echo  '  all		  - Build all targets marked with [*]'
	@echo  'bin	  - Build the bare kernel'
	@echo  'modules	  - Build all modules'
	@echo  ''
	@echo  'Documentation targets:'

clean:
	rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c $(bin_dest)
endif