Linux驱动最简单的Makefile

ifneq ($(KERNELRELEASE),)
obj-m := hello.o
else
KERNELDIR = /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)
default:
$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
endif

注意每一行前没有空格 是tab