Messages in this thread |  | | | Date | Wed, 16 Apr 2008 13:41:27 +0800 (CST) | | Subject | Re: [Patch] UML: Fix another build error | | From | WANG Cong <> | |
From: Jeff Dike <jdike@addtoit.com>
Date: Mon, 14 Apr 2008 11:43:42 -0400
> On Sat, Apr 12, 2008 at 11:39:14PM +0800, WANG Cong wrote:
> > This patch fixes the following build error.
> >
> > CC arch/um/drivers/mconsole_kern.o
> > /home/wangcong/projects/linux-2.6/arch/um/drivers/mconsole_kern.c:337: error: redefinition of ‘mconsole_register_dev’
> > /home/wangcong/projects/linux-2.6/arch/um/include/mconsole_kern.h:47: error: previous definition of ‘mconsole_register_dev’ was here
> > make[2]: *** [arch/um/drivers/mconsole_kern.o] Error 1
> > make[1]: *** [arch/um/drivers/mconsole_kern.ko] Error 2
> > make: *** [sub-make] Error 2
>
> This one is fishy. For one thing, it looks like you reproduce this
> with !CONFIG_MCONSOLE, but I just successfully built a
> !CONFIG_MCONSOLE UML.
>
> Second, the arch/um/drivers/Makefile looks to me (and the build log
> confirms) that mconsole_kern.c isn't compiled with !CONFIG_MCONSOLE.
>
> Third, you should ask yourself if there might be a deeper problem that
> needs fixing if you find yourself putting #ifdef CONFIG_FOO in files
> which implement FOO.
Thanks for teaching this!
I will try if it's possible to reproduce this.
Cong
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