Bug#729203: [FFmpeg-devel] Reintroducing FFmpeg to Debian

["IOhannes m zmölnig (Debian/GNU)"]

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On 2014-07-29 03:20, Marco d'Itri wrote:
>> if they are not drop in replacements, and it would also be a
>> pain if
>>> higher up packages link-in both ffmpeg & libav and some 
>>> clashing symbols are present...
> This is why the new ffmpeg will use different symbols. Again, read 
> the first message.
> 

according to the first message, this is *not* true.
the packages will have different libraries-names / sonames, but this
does not mean that they don't have clashing symbols.
if both library foo (/usr/lib/libfoo.so.3.21) and library bar
(/usr/lib/i386-linux-gnu/libbar.so.4.1) export the symbol "knarzifax",
then how do you make sure that an application that is linked against
both libraries for different functionality always chooses the korrect
"knarzifax"?

this becomes a real world issue, as soon as plugins are involved
(which i find a common practice to access multimedia frameworks).
application "flurp" has a both "flurp-plugin-libav" and
"flurp-plugin-ffmpeg" installed.
whichever plugin is loaded first, will pull in a library that shadows
the symbol "knarzifax" for the *other* plugin.

fgamsdr
IOhannes
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