Bug#849484: libavformat57 has circular Depends on libchromaprint1

[James Cowgill]

Control: forwarded -1 https://bitbucket.org/acoustid/chromaprint/pull-requests/8

Hi,

On 28/12/16 00:16, Andreas Cadhalpun wrote:
> Control: reassign -1 libchromaprint1 1.4.1-1
> Control: severity -1 serious
> 
> Hi Bill,
> 
> On 27.12.2016 19:06, Bill Allombert wrote:
>> There is a circular dependency between libavformat57 and libchromaprint1:
>>
>> libavformat57 	        :Depends: libchromaprint1 (>= 1.3.2)
>> libchromaprint1 	:Depends: libavformat57 (>= 7:3.2.2)
>>
>> Circular dependencies involving shared libraries are known to cause problems
>> during upgrade between stable releases, so we should try to avoid them.
> 
> Thanks for catching that.
> 
> Libavformat uses libchromaprint since version 7:3.0-1, while libchromaprint
> started linking libavformat only in the last uploaded version 1.4.1-1.
> Previously only libchromaprint-tools used libavformat.
> 
> While it would be easy to disable chromaprint support in ffmpeg, that
> would be a feature regression, so I'd rather not do that.
> 
> Hence I'm reassigning this to chromaprint.
> As this is not the time in the release cycle to let such issues slip
> into testing, I'm raising the severity to serious to prevent testing
> migration of the new chromaprint, until this issue is solved.
> 
> Now the question is, why did libchromaprint start using libavformat?
> Can this functionality be moved to libchromaprint-tools or at least
> be disabled?

libchromaprint.so.1 doesn't seem to use any symbols from libavformat,
so it should not link to it. I submitted a simple PR upstream to fix it.

In the meantime, the Debian package could just link with
-Wl,--as-needed to avoid having to patch anything.

Thanks,
James

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