Could not compile sample driver module in Suse 10.3
 

I was trying to compile a module to create a sample driver.
Initially I tried to compile a dummy module and load in the system
using the command,

gcc -D_KERNEL_ -I/usr/src/linux/include -DMODULE -Wall -O2 -c hello.c

The code for hello.c is as follows:

#include <linux/module.h> /* Needed by all modules */
#include <linux/kernel.h> /* Needed for KERN_INFO */
#include <linux/init.h> /* Needed for the macros */

static int __init hello_start(void)
{
printk(KERN_INFO "Loading hello module...\n");
printk(KERN_INFO "Hello world\n");
return 0;
}

static void __exit hello_end(void)
{
printk(KERN_INFO "Goodbye Mr.\n");
}

module_init(hello_start);
module_exit(hello_end);

I get the errors as follows:

error : asm/bitops.h : No such file or directory.
error : asm/thread_info.h : No such file or directory.
error : thread_info.h : In function 'set_ti_thread_flag'.
error : asm/linkage.h : No such file or directory.
error : asm/bug.h : No such file or directory.
error : asm/system.h : No such file or directory.
error : asm/atomic.h : No such file or directory.
error : asm/module.h : No such file or directory.
error : asm/processor.h : No such file or directory.
error : asm/cache.h : No such file or directory.
error : asm/current.h : No such file or directory.
error : asm/local.h : No such file or directory.

The above was the brief summary of errors what I was getting.
Can you help me with the problem and find a suitable solution ?

My guess is that you did not install the kernel header files before compiling this.

I installed the entire kernel package from suse installation disc. But there is no folder
such as /usr/src/linux/include/linux/asm . There are folders like /usr/src/linux/include/linux/asmi386 and others.

ok, so, the headers are found in a different directory than gcc thinks. In that case, you may have to change the prefix.
you have tried this basically tells gcc to look for the include files in the path /usr/src/linux/include/... However, as you have found, on your system the correct path should be /usr/src/linux/include/linux/.... So, maybe you should try this:

If that doesn't work, we'll continue the search...(you may then have to set a symlink to an alternative directory name and point gcc to that)...on the other hand, perhaps other have a quick solution...

Now I changed My code to as follows :

hello.c ..............

#include <module.h>

#if defined(CONFIG_SMP)
#define __SMP__
#endif

#if defined(CONFIG_MODVERSIONS)
#define MODVERSIONS
#include <modversions.h>
#endif

#include <kernel.h>

int init_module(void)
{
printk("<7>Hello, kernel!!\n");
return 0;
}

void cleanup_module(void)
{
printk("<7>Good-bye, kernel!!\n");
}
--------------------------------------------------------------------------
Executed the command you told :
gcc -D _KERNEL_ -I/usr/src/linux/include/linux -DMODULE -Wall -O2 -c hello.c

I got the following errors:

In file included from hello.c:2:
/usr/src/linux/include/linux/module.h:9:28: error: linux/spinlock.h: No such file or directory
/usr/src/linux/include/linux/module.h:10:24: error: linux/list.h: No such file or directory
/usr/src/linux/include/linux/module.h:12:28: error: linux/compiler.h: No such file or directory
/usr/src/linux/include/linux/module.h:13:25: error: linux/cache.h: No such file or directory
/usr/src/linux/include/linux/module.h:14:24: error: linux/kmod.h: No such file or directory
/usr/src/linux/include/linux/module.h:16:29: error: linux/stringify.h: No such file or directory
/usr/src/linux/include/linux/module.h:17:27: error: linux/kobject.h: No such file or directory
/usr/src/linux/include/linux/module.h:18:31: error: linux/moduleparam.h: No such file or directory
/usr/src/linux/include/linux/module.h:19:23: error: asm/local.h: No such file or directory
/usr/src/linux/include/linux/module.h:21:24: error: asm/module.h: No such file or directory
In file included from hello.c:2:
/usr/src/linux/include/linux/module.h:48: error: field ‘attr’ has incomplete type
/usr/src/linux/include/linux/module.h:59: error: field ‘kobj’ has incomplete type
/usr/src/linux/include/linux/module.h: In function ‘lookup_module_symbol_name’:
/usr/src/linux/include/linux/module.h:535: error: ‘ERANGE’ undeclared (first use in this function)
/usr/src/linux/include/linux/module.h:535: error: (Each undeclared identifier is reported only once
/usr/src/linux/include/linux/module.h:535: error: for each function it appears in.)
/usr/src/linux/include/linux/module.h: In function ‘lookup_module_symbol_attrs’:
/usr/src/linux/include/linux/module.h:540: error: ‘ERANGE’ undeclared (first use in this function)
/usr/src/linux/include/linux/module.h: In function ‘module_get_kallsym’:
/usr/src/linux/include/linux/module.h:547: error: ‘ERANGE’ undeclared (first use in this function)
/usr/src/linux/include/linux/module.h: At top level:
/usr/src/linux/include/linux/module.h:596: warning: ‘struct kernel_param’ declared inside parameter list
/usr/src/linux/include/linux/module.h:596: warning: its scope is only this definition or declaration, which is probably not what you want
hello.c: In function ‘init_module’:
hello.c:17: warning: implicit declaration of function ‘printk’

The text is corrupted because of the transferring of data from linux to windows.
Can you help me with the problem please ?