[MacPorts] #59308: ffmpeg-devel: Segmentation Fault on Catalina

[MacPorts]

#59308: ffmpeg-devel: Segmentation Fault on Catalina
-----------------------+--------------------
 Reporter:  llamafilm  |      Owner:  (none)
     Type:  defect     |     Status:  new
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:  2.6.1
 Keywords:             |       Port:
-----------------------+--------------------
 I'm running macOS 10.15 with MacPorts 2.6.1.  Installing ffmpeg-devel
 @4.2.git-20191004 completes with no errors or warnings, but running ffmpeg
 causes a segmentation fault.  I tried `-loglevel trace` but there is no
 output because it crashes instantly.  Is there any way to trace this down?

 I installed the latest from FFmpeg GitHub master branch with default
 options and it works fine.  So I tried compiling git master with all the
 options MacPorts uses, with the default gpl2 variant plus extra-ldflags
 and different mandir and it also works fine.

 `--enable-swscale --enable-avfilter --enable-avresample --enable-
 libmp3lame --enable-libvorbis --enable-libopus --enable-librsvg --enable-
 libtheora --enable-libopenjpeg --enable-libmodplug --enable-libvpx
 --enable-libsoxr --enable-libspeex --enable-libass --enable-libbluray
 --enable-lzma --enable-gnutls --enable-fontconfig --enable-libfreetype
 --enable-libfribidi --disable-libjack --disable-libopencore-amrnb
 --disable-libopencore-amrwb --disable-libxcb --disable-libxcb-shm
 --disable-libxcb-xfixes --disable-indev=jack --enable-opencl --disable-
 outdev=xv --enable-audiotoolbox --enable-videotoolbox --enable-sdl2
 --disable-securetransport --mandir=/usr/local/share/man --enable-shared
 --enable-pthreads --enable-libx265 --enable-gpl --enable-postproc
 --enable-libx264 --enable-libxvid --extra-ldflags="-L/opt/local/lib"`

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Ticket URL: <https://trac.macports.org/ticket/59308>
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