ffmpeg @4.3.1 Build fails on upgrade

[MeNdMont (MeNdMont)]

ffmpeg fails building upgrade to 4.3.1 on Mac.

Have attempted a clean and re-upgrade. Output is as follows:

:info:build gmake: Leaving directory '/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_multimedia_ffmpeg/ffmpeg/work/ffmpeg-4.3.1'
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_multimedia_ffmpeg/ffmpeg/work/ffmpeg-4.3.1" && /opt/local/bin/gmake -j4 -w all 
:info:build Exit code: 2
:error:build Failed to build ffmpeg: command execution failed
:debug:build Error code: CHILDSTATUS 27960 2
:debug:build Backtrace: command execution failed
:debug:build     while executing
:debug:build "system {*}$notty {*}$nice $fullcmdstring"
:debug:build     invoked from within
:debug:build "command_exec build"
:debug:build     (procedure "portbuild::build_main" line 8)
:debug:build     invoked from within
:debug:build "$procedure $targetname"
:error:build See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_multimedia_ffmpeg/ffmpeg/main.log for details.

[MeNdMont (MeNdMont)]

log file

[mf2k (Frank Schima)]

In the future, please use WikiFormatting and add the port maintainer(s) to Cc (port info --maintainers ffmpeg), if any.