Re: [Lcd4linux-devel] I2C again

[Michael R. <re...@eu...>]

Hi Paul,


> I still think that somehow you're building for kernel space. The reason
> for this is the following items in your output:
>=20
>> ----------------------------------------------------------------------=
--
>>
>> In file included from /usr/include/linux/sched.h:12,
>>                 from /usr/include/linux/module.h:10,
>>                 from /usr/include/linux/i2c.h:31,
>>                 from test-i2c.c:6:
>> /usr/include/linux/jiffies.h:385:41: division by zero in #if
>> =20
>>
> This module.h is only included (on my system) when __KERNEL__ is define=
d
> when compiling i2c.h

No, not here:

merlin:~ $ more /usr/include/linux/i2c.h
/*--------------------------------------------------------------------*/
/*                                                                    */
/* i2c.h - definitions for the i2c-bus interface                      */
/*                                                                    */
/*--------------------------------------------------------------------*/
/*   Copyright (C) 1995-2000 Simon G. Vogl

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
     */
/*--------------------------------------------------------------------*/

/* With some changes from Ky=F6sti M=E4lkki <km...@cc...> and
   Frodo Looijaard <fr...@dd...> */

/* $Id: i2c.h,v 1.68 2003/01/21 08:08:16 kmalkki Exp $ */

#ifndef _LINUX_I2C_H
#define _LINUX_I2C_H

#include <linux/module.h>
#include <linux/types.h>
#include <linux/i2c-id.h>
#include <linux/device.h>       /* for struct device */
#include <asm/semaphore.h>

There's no #ifdef __KERNEL__ around here...

> Which version of the kernel headers are you using? That warning message
> in list.h is on line 713 on my system.
Line 705 or so here. Ther header files are from a vanilla 2.6.11 kernel

> On more thing to check is
> gcc -v -E -dM test-i2c.c > defines-test-i2c.lst
> gcc -v -E -dM test-i2c.c 2> defines-test-i2c2.lst

Too big for the mailing list, I'll send them with a PM to Paul only.

I think the i2c.h file from the kernel ist simply not intended for
userspace programs... if this is true, we have to create our own i2c.h...


bye, Michael

--=20
Michael Reinelt <re...@eu...>
http://home.pages.at/reinelt
GPG-Key 0xDF13BA50
ICQ #288386781