LinuxQuestions.org - [SOLVED] Problem with compiling the module driver

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Problem with compiling the module driver

I'm newbie at driver module programming.... I've written a very simple hello world module then I wanna compile it , I got this result :

Code:

make -C /lib/modules/2.6.38-8-generic/build M=/root/ker modules

make[1]: Entering directory `/usr/src/linux-headers-2.6.38-8-generic'

make[1]: Makefile: No such file or directory

make[1]: *** No rule to make target `Makefile'.  Stop.

make[1]: Leaving directory `/usr/src/linux-headers-2.6.38-8-generic'

make: *** [all] Error 2

Also I've installed linux headers via following command

Code:

apt-get install linux-headers-2.6.38-8-generic

here is my Makefile file

Code:

obj-m += hello.o



all:

        make -C /lib/modules/$(shell uname -r)/build M=$(shell pwd) modules



clean:

        make -C /lib/modules/$(shell uname -r)/build M=$(shell pwd) clean

Also I gotta note that , the "build" is not exist at that folder:)

my source code :

Code:

#include <linux/module.h>

#include <linux/kernel.h>

 

int init_module(void)

{

        printk(KERN_INFO "init_module() called\n");

        return 0;

}

 

void cleanup_module(void)

{

        printk(KERN_INFO "cleanup_module() called\n");

}

thanks

Is Makefile in the linux src directory? You might need a different package for Ubuntu.

Also, while we're at it. Your hello world should look more like this:

Code:

#include <linux/kernel.h>

#include <linux/module.h>



static int __init mymodule_init(void)

{

        printk(KERN_INFO "init_module() called\n");

        return 0;

}



static void __exit mymodule_exit(void)

{

        printk(KERN_INFO "cleanup_module() called\n");

}



module_init(mymodule_init);

module_exit(mymodule_exit);



MODULE_LICENSE("GPL");

MODULE_AUTHOR("me");

MODULE_DESCRIPTION("Hello, World!");

Sorry man , I got the problem solved by removing all of the linux source headers and re-install the proper one.... so all the lnk links are correct now :)

yeah I got that hello world missing lines added ;)

thanks