Unable to build Mariadb-10.5 on 10.11

[mav2287 (James)]

When building Mariadb-10.5 on OS X 10.11.6 (15G22010) I get the following errors:

Error: Failed to build mariadb-10.5: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_databases_mariadb-10.5/mariadb-10.5/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port mariadb-10.5-server failed

When I do tail 20 on the referenced log file I get this:

:info:build cd /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_databases_mariadb-10.5/mariadb-10.5/work/build/storage/spider && /opt/local/bin/cmake -E cmake_link_script CMakeFiles/spider.dir/link.txt --verbose=ON
:info:build /opt/local/bin/clang++-mp-9.0 -pipe -Os -stdlib=libc++ -fstack-protector --param=ssp-buffer-size=4 -DHAVE_HANDLERSOCKET -DNDEBUG -D_FORTIFY_SOURCE=2 -DDBUG_OFF -arch x86_64 -mmacosx-version-min=10.11 -bundle -Wl,-headerpad_max_install_names -L/opt/local/lib -Wl,-headerpad_max_install_names -o ha_spider.so CMakeFiles/spider.dir/spd_param.cc.o CMakeFiles/spider.dir/spd_sys_table.cc.o CMakeFiles/spider.dir/spd_trx.cc.o CMakeFiles/spider.dir/spd_db_conn.cc.o CMakeFiles/spider.dir/spd_conn.cc.o CMakeFiles/spider.dir/spd_table.cc.o CMakeFiles/spider.dir/spd_direct_sql.cc.o CMakeFiles/spider.dir/spd_udf.cc.o CMakeFiles/spider.dir/spd_ping_table.cc.o CMakeFiles/spider.dir/spd_copy_tables.cc.o CMakeFiles/spider.dir/spd_i_s.cc.o CMakeFiles/spider.dir/spd_malloc.cc.o CMakeFiles/spider.dir/ha_spider.cc.o CMakeFiles/spider.dir/spd_db_mysql.cc.o CMakeFiles/spider.dir/spd_db_handlersocket.cc.o CMakeFiles/spider.dir/spd_db_oracle.cc.o CMakeFiles/spider.dir/spd_group_by_handler.cc.o CMakeFiles/spider.dir/spd_db_include.cc.o CMakeFiles/spider.dir/hs_client/config.cpp.o CMakeFiles/spider.dir/hs_client/escape.cpp.o CMakeFiles/spider.dir/hs_client/fatal.cpp.o CMakeFiles/spider.dir/hs_client/hstcpcli.cpp.o CMakeFiles/spider.dir/hs_client/socket.cpp.o CMakeFiles/spider.dir/hs_client/string_util.cpp.o  -Wl,-rpath,/opt/local/lib ../../libservices/libmysqlservices.a -Wl,-bundle_loader,/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_databases_mariadb-10.5/mariadb-10.5/work/build/sql/mariadbd 
:info:build make[2]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_databases_mariadb-10.5/mariadb-10.5/work/build'
:info:build [ 97%] Built target spider
:info:build make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_databases_mariadb-10.5/mariadb-10.5/work/build'
:info:build make: *** [all] Error 2
:info:build make: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_databases_mariadb-10.5/mariadb-10.5/work/build'
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_databases_mariadb-10.5/mariadb-10.5/work/build" && /usr/bin/make -j16 -w all VERBOSE=ON 
:info:build Exit code: 2
:error:build Failed to build mariadb-10.5: command execution failed
:debug:build Error code: CHILDSTATUS 45006 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"

I am getting similar errors with Mariadb 10.2 10.3 and 10.4 as well.