利用Makefile单独编译驱动模块文件

Makefile文件如下:

KERNELDIR = /home/wenhao/platform/linux-2.6.34
PWD := $(shell pwd)
CROSS_COMPILE = /usr/local/arm/4.3.2/bin/arm-linux-
CC	= $(CROSS_COMPILE)gcc

obj-m := key.o 

modules:
	$(MAKE) -C $(KERNELDIR) M=$(PWD) modules

clean:
	rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions

.PHONY: modules clean