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Date: Wed, 25 Oct 2006 14:26:10 +0200
From: Matthias Fechner <idefix@fechner.net>
To: kbuild-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: Re: [kbuild-devel] Link lib to a kernel module
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References: <20061024105518.GA55219@server.idefix.loc> <slrnejs14h.93p.olecom@flower.upol.cz>
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Hello Oleg,

* Oleg Verych <olecom@flower.upol.cz> [24-10-06 12:11]:
> `Documentation/kbuild' directory in your linux sources.
> `makefiles.txt' about `lib-y',
> `modules.txt'   about modules.

I was now successfull with:
hello_lib.h:
int printHello(int);

hello_lib.c
int printHello(int count)
{
   int i;
      
   for(i=0;i<=count;i++)
   {
       printk("Hello World\n");
   }
   return 0;
}
			   
hello.c:
#include <linux/kernel.h>
#include <linux/module.h>
#include "hello_lib.h"
   
MODULE_LICENSE("GPL");
			   
int init_module(void)
{
    printk("call function\n");
    printHello(5);
    return 0;
}
				    
void cleanup_module(void)
{
    printk(KERN_INFO "remove module\n");
    return;
}
					  
Makefile:
KDIR    := /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)

obj-m += test.o
test-y := hello.o libhello_lib.a

all:
   gcc -I/usr/include -c -o hello_lib.o hello_lib.c
   rm -f libhello_lib.a
   ar cru libhello_lib.a hello_lib.o
   $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules KBUILD_VERBOSE=1
	      


Best regards,
Matthias

-- 

"Programming today is a race between software engineers striving to
build bigger and better idiot-proof programs, and the universe trying to
produce bigger and better idiots. So far, the universe is winning." --
Rich Cook