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Date: Tue, 4 Dec 2001 12:33:27 -0600
From: Tommy Reynolds <reynolds@redhat.com>
To: apiggyjj@yahoo.ca
Cc: linux-kernel@vger.kernel.org
Subject: Re: Insmod problems
Message-Id: <20011204123327.7e7618b7.reynolds@redhat.com>
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	<20011204182023.87068.qmail@web20206.mail.yahoo.com>
Organization: Red Hat Software, Inc. / Embedded Development
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More important activities lacking, "Michael Zhu" <apiggyjj@yahoo.ca> wrote:

> I've changed my source file like this:
> #define MODULE
> 
> #include <linux/module.h>
> 
> int init_module(void)  { printk("<1>Hello, world\n");
> return 0; }
> void cleanup_module(void) { printk("<1>Goodbye cruel
> world\n"); }
> 
> And I use the following command line to build the
> module.
> 
> gcc -c -D__KERNEL__ hello.c
> 
> But when I use insmod to load the module I got the
> following error message:
> 
> hello.o : kernel-module version mismatch
>          hello.o was compiled for kernel version
> 2.4.12
>          while this kernel is version 2.4.8
> 
> What is wrong? My kernel version is 2.4.8. Is there
> something wrong with the gcc compilier? My gcc
> compilier is gcc-2.95.

You're not picking up the correct kernel header files.  Don't allow GCC to pick
up the files from "/usr/include/linux":

$ gcc -I/usr/src/linux/include -c -D__KERNEL__ hello.c

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- + -- -- -- -- -- -- -- -- -- --
Tommy Reynolds                               | mailto: <reynolds@redhat.com>
Red Hat, Inc., Embedded Development Services | Phone:  +1.256.704.9286
307 Wynn Drive NW, Huntsville, AL 35805 USA  | FAX:    +1.256.837.3839
Senior Software Developer                    | Mobile: +1.919.641.2923

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