Date: Thu, 17 May 2007 09:11:36 +0200
From: Sam Ravnborg <sam@ravnborg.org>
To: Martin Christoph <mail@da7a.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: PROBLEM: 2.6.21 - "make modules" with GREP_OPTIONS="-C1" (and other)
Message-ID: <20070517071136.GB3690@uranus.ravnborg.org>
References: <464BCB66.2090205@da7a.de>
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On Thu, May 17, 2007 at 05:26:30AM +0200, Martin Christoph wrote:
> [1] Summary:
> If i have some GREP_OPTIONS set (like -C1 or other) i get several errors
> while trying to do "make modules".
> 
> [2] Full description:
> With some GREP_OPTIONS set "make modules" drops several errors like that:
> 
> root@spot /usr/src/linux # GREP_OPTIONS="-C1" make modules
>   CHK     include/linux/version.h
>   CHK     include/linux/utsrelease.h
>   Building modules, stage 2.
> [...]
> WARNING: "aes_enc_blk" [arch/i386/crypto/aes.ko] undefined!
> WARNING: "aes_dec_blk" [arch/i386/crypto/aes.ko] undefined!
> [...]
> make[1]: *** [__modpost] Error 1
> make: *** [modules] Error 2
> 
> [3] Keywords:
> "make modules", "GREP_OPTIONS", "WARNING", "undefined"
> 
> [X.] Suggestion to fix:
> Unset GREP_OPTIONS within make process.

Thanks for reporting this - I gues this took some time to
find the root cause of the problem.

Albeit fixing it seems simple I will consider it for a
while. In the kernel we use several tools like:
awk, grep, perl, ls, rm, mv, cmp etc and then
we should audit all of these to check if similar
things could occur.

If someone steps up to do the check (including
all the tools I missed) I would be very grateful.

	Sam
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