Mailinglist Archive: opensuse-factory (1134 mails)

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Re: [packman] [opensuse-factory] Fwd: commit libavutil for openSUSE:Factory
  • From: Dave Plater <davejplater@xxxxxxxxx>
  • Date: Wed, 27 Jun 2012 09:58:35 +0200
  • Message-id: <CAOaBXio6KEki08SrHEU_9on4e2Tx=zrj0-pGY8FPPuZZsom_fg@mail.gmail.com>
When I discovered that the future xine-lib had a hard dependancy on
libavutil and that libavutil wasn't encumbered by patent problems
(August last year) I decided on a static lib built with xine due to
libavutil being part of ffmpeg.
The only safe way that I can see with a dynamic libavutil in factory
is for packman to also separate libavutil and build a linked package
otherwise it will be a problem to keep them in sync. The Packman
ffmpeg maintainer will need to maintain openSUSE libavutil as well. I
normally run multimedia:apps with libxine-codecs from Packman. Ffmpeg
tends to change frequently and may cause unforseen problems if
libavutil gets out of sync. libxine2 itself needs libavutil the rest
of the ffmpeg libs are used by plugin builds. IMHO the xine-lib
developers should include a static libavutil. Have a look at Debian
and Fedora for clues.
Excuse the gmail top posting.
Dave

On 6/24/12, Cristian Morales Vega <reddwarf@xxxxxxxxxxxx> wrote:
If xine is going to be the only library that uses libavutil a static
version could make sense. But there is no reason to think that's going
to be the case. And then... really, I fail to see the problem here.
Could you please show a specific case where using a dynamic version of
libavutil there is a problem that isn't there when using a static one?


On 24 June 2012 13:47, Dave Plater <davejplater@xxxxxxxxx> wrote:
I have been working on a static build of libavutil included in the hg
version of xine-lib but was having difficulty getting that version of
xine-lib to build. Unfortunately I'm computerless atm but this would
certainly solve the problem.
Dave

On 6/15/12, Cristian Morales Vega <reddwarf@xxxxxxxxxxxx> wrote:
On 15 June 2012 18:25, Dominique Leuenberger a.k.a DimStar
<DimStar@xxxxxxxxxxxx> wrote:
Has this be well planned

Since xine 1.2.x depends on libavutil unconditionally
(https://bugzilla.novell.com/show_bug.cgi?id=762784) it's basically
the only solution.

But I don't see any real problem here. Can you put an specific
combination of circumstances that would be problematic? It would be
safer and easier if libavutil versioned symbols in a more detailed way
instead of just to avoid using symbols from a library with a different
soname, but that problem happens with lots of libraries that don't
even version symbols at all.
xine is the only package from openSUSE that will link against it. And
the most common case is for users to use both xine and libavutil from
Packman. So this seems 100% safe to me.

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