[MacPorts] #43100: ffmpeg, ffmpeg-devel: switch to using SDL2

[MacPorts]

#43100: ffmpeg, ffmpeg-devel: switch to using SDL2
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  Reporter:  thomas.c.jansen@…     |      Owner:  devans@…
      Type:  enhancement           |     Status:  assigned
  Priority:  Normal                |  Milestone:
 Component:  ports                 |    Version:  2.2.1
Resolution:                        |   Keywords:
      Port:  ffmpeg, ffmpeg-devel  |
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Comment (by thomas.c.jansen@…):

 I am not aware of any additional or improved features in ffmpeg when SDL2
 is used, except that SDL(1) is no longer maintained and might contain
 unfixed bugs.

 My main motivation for filing this bug report was a build conflict I got
 for a project which uses ffmpeg and SDL2. Because ffmpeg links SDL(1), I
 ended up with SDL and SDL2 being linked at the same time, giving me symbol
 resolution conflicts.

 Giving the user an option (+sdl2) sounds reasonable.

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Ticket URL: <https://trac.macports.org/ticket/43100#comment:3>
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