https://blog.csdn.net/yusiguyuan/article/details/11144941

1. //刚下载的linux源代码，一个简单的hello驱动都没有编译通过

2. //下面是驱动源代码

4. #include <linux/init.h>

5. #include <linux/module.h>

7. static int hello_init(void)

8. {

9. printk(KERN_ALERT "Hello, Tekkaman Ninja ！\n");

10. return 0;

11. }

13. static void hello_exit(void)

14. {

15. printk(KERN_ALERT "Goodbye, Tekkaman Ninja ！\n Love Linux !Love ARM ! Love KeKe !\n");

16. }

18. module_init(hello_init);

19. module_exit(hello_exit);

23. MODULE_LICENSE("Dual BSD/GPL");

下面是简单的makefile文件

1. obj-m := hello.o

2. KERNELDIR = /home/xduser/study/driver/src/linux-2.6.22

3. PWD := $(shell pwd)

4. default:

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

但是却有错误

1. make[1]: Entering directory `/home/xduser/study/driver/src/linux-2.6.22'

3. ERROR: Kernel configuration is invalid.

4. include/linux/autoconf.h or include/config/auto.conf are missing.

5. Run 'make oldconfig && make prepare' on kernel src to fix it.

8. WARNING: Symbol version dump /home/xduser/study/driver/src/linux-2.6.22'/Module.symvers

9. is missing; modules will have no dependencies and modversions.

原因是内核没有编译，先处理内核

进入内核目录执行

1， make oldconfig

2， make prepare

3， make scripts

然后在执行make编译hello驱动即可