[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 devans@…):

 Sorry for losing track of this ticket.

 After looking at ffmpeg's configure, it is apparent that ffmpeg will only
 configure with libsdl not libsdl2.  It checks for sdl.pc using pkg-config
 or failing that sdl-config.  libsdl2 provides sdl2.pc and sdl2-config.

 Further testing (using current ffmpeg 2.2.1 with libsdl dependency
 removed) shows
   * if only libsdl2 is active, ffmpeg does NOT configure the sdl outdev
   * if only libsdl is active, ffmpeg DOES configure the sdl outdev
   * if both are installed (they can install in parallel without conflict),
 ffmpeg configures the sdl outdev using libsdl

 What's your basis for claiming that ffmpeg supports libsdl2?

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Ticket URL: <https://trac.macports.org/ticket/43100#comment:4>
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