libgcc11 fails to build on monterey 12.0.1 x86_64

[breiter (Brian Reiter)]

checking for AF_INET6... yes
:info:build checking if mkdir takes one argument... no
:info:build Error: configuring for an unreleased macOS version x86_64-apple-darwin21
:info:build make[2]: *** [configure-stage1-gcc] Error 1
:info:build make[2]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc11/libgcc11/work/build'
:info:build make[1]: *** [stage1-bubble] Error 2
:info:build make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc11/libgcc11/work/build'
:info:build make: *** [bootstrap-lean] Error 2
:info:build make: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc11/libgcc11/work/build'
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc11/libgcc11/work/build" && /usr/bin/make -j16 -w bootstrap-lean 
:info:build Exit code: 2
:error:build Failed to build libgcc11: command execution failed
:debug:build Error code: CHILDSTATUS 79725 2
:debug:build Backtrace: command execution failed
:debug:build     while executing
:debug:build "system {*}$notty {*}$callback {*}$nice $fullcmdstring"
:debug:build     invoked from within
:debug:build "command_exec -callback portprogress::target_progress_callback build"
:debug:build     (procedure "portbuild::build_main" line 8)
:debug:build     invoked from within
:debug:build "$procedure $targetname"
:error:build See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc11/libgcc11/main.log for details.

[jmroot (Joshua Root)]

#63677 is newer but has a patch, so closing this one.