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In-Reply-To: <tkrat.96ade464d75d0932@igpm.rwth-aachen.de>
References: <tkrat.96ade464d75d0932@igpm.rwth-aachen.de>
Date: Thu, 21 Jan 2010 18:31:34 +0200
Message-ID: <fecdbac61001210831x5c2f9545l2fb6e4ef8a1abf56@mail.gmail.com>
Subject: Re: [gentoo-user] dependencies - one more mystery novel
From: "Arttu V." <arttuv69@gmail.com>
To: gentoo-user@lists.gentoo.org
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On 1/21/10, Helmut Jarausch <jarausch@igpm.rwth-aachen.de> wrote:
> Upgrading to media-libs/jpeg-8
> poses a new level of difficulty (to me).
>
> I cannot use emerge @preserved-rebuild since I still
> have kde-3 packages and still have problems with the
> kde-sunset overlay which I have to resolve lateron.
>
> Now, I try to find out which packages depend on jpeg-7.
> First idea
> revdep-rebuild -p -L /usr/lib64/libjpeg.so.7
>
> but this also finds packages which depend on
> /usr/lib64/libjpeg.so.7 AND /usr/lib64/libjpeg.so.8
> probably because they depend on /usr/lib64/libjpeg.so.7
> only indirectly.
>
> But how to find out these intermediate libraries which depend
> on /usr/lib64/libjpeg.so.7 directly?
I don't know why you wouldn't want to fix the kde3 overlay part ASAP,
but here is a guesswork, which might dig you something useful:
ls /usr/lib64/*.so | xargs -r scanelf -BF%n | grep 'libjpeg\.so\.7' |
awk '{ print $2 }' | xargs -r qfile -qC | uniq
It doesn't understand, e.g., slots, nor is really optimized. For such,
we'd need a separate program, which we'd call ... umm, lemme think ...
is reverse-dependency-rebuilder good? ;)
--
Arttu V.