csound fails to build [El Capitan 10.11.6]

[Many-Days]

Hello,

I try to build csound (to use with solfege) but the compilation fails:

--->  Building csound
Error: Failed to build csound: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_audio_csound/csound/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port csound failed

Here is the tail of the log file:

:info:build CONFIGURATION DECISION: Using GNU gettext scheme
:info:build CONFIGURATION DECISION: Using single-precision floating point for audio samples.
:info:build Mac OS X version 10.11
:info:build KeyError: 11:
:info:build   File "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_audio_csound/csound/work/Csound5.16.6/SConstruct", line 600:
:info:build     sysPyVers = OSXSystemPythonVersions[OSXvers]
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_audio_csound/csound/work/Csound5.16.6" && /opt/local/bin/scons -j4 prefix=/opt/local CC=/usr/bin/clang CXX=/usr/bin/clang++ usePortAudio=0 usePortMIDI=0 useJack=0 useFLTK=1 buildCsound5GUI=1 buildRelease=1 dynamicCsoundLibrary=1 instdir=/opt/local/var/macports/build _opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_audio_csound/csound/work/destroot install=0 
:info:build Exit code: 2
:debug:build Error code: CHILDSTATUS 44044 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_release_tarballs_ports_audio_csound/csound/main.log for details.

Can anyone help me?

Thanks!

[mf2k (Frank Schima)]

In the future, please use WikiFormatting.

Please attach the main.log file after cleaning the port (sudo port clean csound).