chardev driver build Makefile

ARCH := arm

CROSS_COMPILE := arm-linux-gnueabi-

export ARCH CROSS_COMPILE 

obj-m += chardev.o

ifneq ($(KERNELRELEASE),)

else

KERNELDIR ?= /home/hugh/workspace/linux-4.9.28

PWD := $(shell pwd)

default:

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

clean:

　　$(MAKE) -C $(KERNELDIR) M=$(PWD) clean

endif

chardev driver build Makefile

原文：http://www.cnblogs.com/hughxu/p/7069568.html