[MacPorts] #55171: ffmpeg-devel @20171024 breaks on Snow Leopard, Mac OS X 10.6.8, the ports opencv, transcode, and libquicktime-devel

[MacPorts]

#55171: ffmpeg-devel @20171024 breaks on Snow Leopard, Mac OS X 10.6.8, the ports
opencv, transcode, and libquicktime-devel
-------------------------+-------------------------
 Reporter:  ballapete    |      Owner:
     Type:  defect       |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.4.2
 Keywords:  snowleopard  |       Port:  ffmpeg-deve
-------------------------+-------------------------
 This version installs in `/opt/local/include/libavcode` versions of C
 header files that do not `#define` macros like `CODEC_FLAG_GLOBAL_HEADER`
 and `AVFMT_RAWPICTURE`, both needed by opencv, and some simplistic ones
 with for example `ZERO` in their name needed by ibquicktime-devel.

 The three ports mentioned above need to be rebuilt after installation of
 fmpeg-devel @20171024, but cannot be rebuilt due to the changes in the C
 header files.

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Ticket URL: <https://trac.macports.org/ticket/55171>
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