xar fails to upgrade to @1.8.0.487.100.1 on PowerPC

[barracuda156]

:info:build Executing:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xar/xar/work/xar-487.100.1/xar" && /usr/bin/make -j4 -w all 
:debug:build system:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xar/xar/work/xar-487.100.1/xar" && /usr/bin/make -j4 -w all 
:info:build make: Entering directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xar/xar/work/xar-487.100.1/xar'
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/archive.c -o lib/archive.o
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/bzxar.c -o lib/bzxar.o
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/b64.c -o lib/b64.o
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/arcmod.c -o lib/arcmod.o
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/darwinattr.c -o lib/darwinattr.o
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/data.c -o lib/data.o
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/ea.c -o lib/ea.o
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/err.c -o lib/err.o
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/ext2.c -o lib/ext2.o
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/fbsdattr.c -o lib/fbsdattr.o
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/filetree.c -o lib/filetree.o
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/io.c -o lib/io.o
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/lzmaxar.c -o lib/lzmaxar.o
:info:build /opt/local/bin/gcc-mp-11 -pipe -I/opt/local/libexec/openssl3/include -Os -arch ppc  -fPIC -DPIC -dynamic -Iinclude -Iinclude -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -I/opt/local/include/libxml2 -c lib/linuxattr.c -o lib/linuxattr.o
:info:build lib/filetree.c: In function 'xar_file_equals_file':
:info:build lib/filetree.c:744:9: error: variable-sized object may not be initialized
:info:build   744 |         char * keys_to_ignore[keys_to_ignore_count] = { "id" }; // ID is allowed ot mismatch
:info:build       |         ^~~~
:info:build make: *** [lib/filetree.o] Error 1
:info:build make: *** Waiting for unfinished jobs....
:info:build make: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xar/xar/work/xar-487.100.1/xar'
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xar/xar/work/xar-487.100.1/xar" && /usr/bin/make -j4 -w all 
:info:build Exit code: 2
:error:build Failed to build xar: command execution failed
:debug:build Error code: CHILDSTATUS 70012 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"

The identical failure confirmed on 10.4.11 and 10.6, will check 10.5.8 soon. (On Tiger it fails using gcc7.)