linux-kernel - Re: V4L2: __ucmpdi2 undefined on ppc

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Message-ID: <457FF939.6080504@agmk.net>
Date:	Wed, 13 Dec 2006 13:59:37 +0100
From:	Paweł Sikora <pluto@...k.net>
To:	Meelis Roos <mroos@...ux.ee>
Cc:	Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: V4L2: __ucmpdi2 undefined on ppc

Meelis Roos napisał(a):
>   MODPOST 618 modules
> WARNING: "__ucmpdi2" [drivers/media/video/v4l2-common.ko] undefined!
> 
> This 32-bit ppc architecture, using gcc version 4.1.2 20061115 
> (prerelease) (Debian 4.1.1-21). .config below if important.
> 
> __ucmpdi2 seems to be 64-bit comparision. gcc seems to use it for switch 
> statements on 64-bit values.
> 
> drivers/media/video/v4l2-common.c::v4l2_norm_to_name seems to be one 
> such switch statement - type of id is v4l2_std_id which is 64-bit.
> 
> Should ppc have __ucmpdi2 defined in arch-specific lib? Some other 
> architectures seem to implement it (arm, arm26, frv, h8300).

maybe it's new gcc bug.

[ already fixed ]
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21237
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25724

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