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Date: Tue, 24 Oct 2006 12:55:18 +0200
From: Matthias Fechner <idefix@fechner.net>
To: linux-kernel@vger.kernel.org
Subject: Link lib to a kernel module
Message-ID: <20061024105518.GA55219@server.idefix.loc>
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Hi,

I tried today to link a lib (.a) to my kernel module but I could not
found howto do it.
I prepared a little example:
hello.c:
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/version.h>
#include "hello_lib.h"

MODULE_LICENSE("GPL");

int init_module(void)
{
   printHello();
   return 0;
}
	   
void cleanup_module(void)
{
   printk("remove module\n");
   return;
}

hello_lib.c:
int helloWorld(void)
{
   printk("Hello World\n");
   return 0;
}

hello_lib.h:
int helloWorld(void);

Makefile:
KDIR    := /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)
EXTRA_CFLAGS+=-I/usr/home/idefix/programming/kernel_hello_world_lib/

obj-m := hello.o
hello-obj := hello.o libarinc653.a

all:
        gcc -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

Can please someone help me here?

Thx a lot,
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