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Date: Tue, 10 Feb 2009 10:09:55 -0200
From: Mauro Carvalho Chehab <mchehab@infradead.org>
To: Eduard Huguet <eduardhc@gmail.com>
Cc: linux-media@vger.kernel.org
Subject: Re: cx8802.ko module not being built with current HG tree
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On Tue, 10 Feb 2009 12:57:47 +0100
Eduard Huguet <eduardhc@gmail.com> wrote:

> Hi,
>     Just tried it right now, with these simple steps:
> 
>       · hg clone http://linuxtv.org/hg/v4l-dvb
>       · cd v4l-dvb
>       · make menuconfig & exit from it without touching anything
> 
> I attach the resulting v4l/.config file generated. As you can see,
> CX88_MPEG is being marked as 'Y' instead that 'M':
> 
> $ grep CX88 v4l/.config
> CONFIG_VIDEO_CX88=m
> CONFIG_VIDEO_CX88_ALSA=m
> CONFIG_VIDEO_CX88_BLACKBIRD=m
> CONFIG_VIDEO_CX88_DVB=m
> CONFIG_VIDEO_CX88_MPEG=y
> CONFIG_VIDEO_CX88_VP3054=m

Weird. I 've applied your changeset and copied it at v4l/.config. Then, a make
menuconfig and exit, just to be sure that kernel build would touch on it.
Everything worked fine.

> I'm compiling against Ubuntu kernel 2.6.22, which I know it's pretty
> old. Can this make any difference?

I'm using here kernel 2.6.28.2. Maybe this is some bug on the Ubuntu's kernel
kbuild, since make *config options at the out-of-tree kernel is a wrapper to
the kernel kbuild.

Could you please try the same procedure with a newer kernel? There's no need to
install the kernel on your machine. All you need to do is something like:

wget <newer kernel like 2.6.28.4>
tar -xvfoj <kernel>
cd linux
make init

cd ~/v4l-dvb
make release DIR=<newer kernel patch>
make menuconfig

The "make release" will allow you to use the Kbuild of the newer kernel.

> 
> Best regards,
>   Eduard
> 
> PS: by the way, this works fine when using revision 10189,  just
> before CX88 dependencies got altered.

The problem is that the old Kconfig were causing breakages upstream.

Cheers,
Mauro