[MacPorts] #71427: ffmpeg7 - Fails to Build on El Capitan - error: must use 'enum' tag to refer to type 'AVMediaType'

[MacPorts]

#71427: ffmpeg7 - Fails to Build on El Capitan - error: must use 'enum' tag to
refer to type 'AVMediaType'
----------------------+-----------------------
  Reporter:  RobK88   |      Owner:  (none)
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.10.5
Resolution:           |   Keywords:  elcapitan
      Port:  ffmpeg7  |
----------------------+-----------------------

Comment (by RobK88):

 Here is the workaround.  Use a newer compiler such as `clang-11`.  See
 below:


 {{{
 grinch$ sudo port clean ffmpeg7
 --->  Cleaning ffmpeg7

 grinch$ sudo port install ffmpeg7 configure.compiler=macports-clang-11
 --->  Computing dependencies for ffmpeg7
 --->  Fetching archive for ffmpeg7
 --->  Attempting to fetch ffmpeg7-7.1_0+gpl2.darwin_15.x86_64.tbz2 from
 http://packages.macports.org/ffmpeg7
 --->  Attempting to fetch ffmpeg7-7.1_0+gpl2.darwin_15.x86_64.tbz2 from
 http://ywg.ca.packages.macports.org/mirror/macports/packages/ffmpeg7
 --->  Attempting to fetch ffmpeg7-7.1_0+gpl2.darwin_15.x86_64.tbz2 from
 https://mirrors.mit.edu/macports/packages/ffmpeg7
 --->  Fetching distfiles for ffmpeg7
 --->  Verifying checksums for ffmpeg7
 --->  Extracting ffmpeg7
 --->  Applying patches to ffmpeg7
 --->  Configuring ffmpeg7
 --->  Building ffmpeg7
 --->  Staging ffmpeg7 into destroot
 --->  Installing ffmpeg7 @7.1_0+gpl2
 --->  Activating ffmpeg7 @7.1_0+gpl2
 --->  Cleaning ffmpeg7
 --->  Updating database of binaries
 --->  Scanning binaries for linking errors
 --->  No broken files found.
 --->  No broken ports found.
 --->  Some of the ports you installed have notes:
   ffmpeg7 has the following notes:
     Support for rav1e now disabled by default; enable via +rav1e
     This build of ffmpeg7 includes GPLed code and is therefore licensed
 under GPL v2 or later.
     The following modules are GPLed:
       libvidstab libx264 libx265 libxvid postproc
     To include all nonfree, GPLed and LGPL code use variant +nonfree. To
 remove nonfree and
     GPLed code leaving only LGPL code remove the +gpl2 variant.

     To compile and link with ffmpeg7, add
 -I/opt/local/libexec/ffmpeg7/include and
     -L/opt/local/libexec/ffmpeg7/lib to your compile command.
     For builds using pkg-config, add
 /opt/local/libexec/ffmpeg7/lib/pkgconfig to
     $PKG_CONFIG_PATH.
 grinch$
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/71427#comment:3>
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