10.5.7 does not build stacktrace-t (OpenBSD) - HAVE_BACKTRACE / HAVE_BACKTRACE_FD missing

[499/1657] : && /home/ports/pobj/mariadb-10.5.7/bin/c++  -O2 -pipe  -I/usr/local/include -fstack-protector --param=ssp-buffer-size=4 -DNDEBUG -D_FORTIFY_SOURCE=2 -DDBUG_OFF  -L/usr/local/lib -Wl,-z,relro,-z,now unittest/mysys/CMakeFiles/stacktrace-t.dir/stacktrace-t.c.o  -o unittest/mysys/stacktrace-t -L/usr/lib   -L/usr/local/lib -lpthread  unittest/mytap/libmytap.a  mysys/libmysys.a  dbug/libdbug.a  strings/libstrings.a  mysys/libmysys.a  dbug/libdbug.a  strings/libstrings.a  -lz  -lm  -lpthread  -Wl,-rpath-link,/usr/X11R6/lib && :

FAILED: unittest/mysys/stacktrace-t

: && /home/ports/pobj/mariadb-10.5.7/bin/c++  -O2 -pipe  -I/usr/local/include -fstack-protector --param=ssp-buffer-size=4 -DNDEBUG -D_FORTIFY_SOURCE=2 -DDBUG_OFF  -L/usr/local/lib -Wl,-z,relro,-z,now unittest/mysys/CMakeFiles/stacktrace-t.dir/stacktrace-t.c.o  -o unittest/mysys/stacktrace-t -L/usr/lib   -L/usr/local/lib -lpthread  unittest/mytap/libmytap.a  mysys/libmysys.a  dbug/libdbug.a  strings/libstrings.a  mysys/libmysys.a  dbug/libdbug.a  strings/libstrings.a  -lz  -lm  -lpthread  -Wl,-rpath-link,/usr/X11R6/lib && :

ld: error: undefined symbol: my_safe_print_str

>>> referenced by stacktrace-t.c

>>>               unittest/mysys/CMakeFiles/stacktrace-t.dir/stacktrace-t.c.o:(test_my_safe_print_str)

>>> referenced by stacktrace-t.c

>>>               unittest/mysys/CMakeFiles/stacktrace-t.dir/stacktrace-t.c.o:(test_my_safe_print_str)

>>> referenced by stacktrace-t.c

>>>               unittest/mysys/CMakeFiles/stacktrace-t.dir/stacktrace-t.c.o:(test_my_safe_print_str)

>>> referenced by stacktrace-t.c

>>>               unittest/mysys/CMakeFiles/stacktrace-t.dir/stacktrace-t.c.o:(test_my_safe_print_str)

>>> referenced by stacktrace-t.c

>>>               unittest/mysys/CMakeFiles/stacktrace-t.dir/stacktrace-t.c.o:(test_my_safe_print_str)

>>> referenced by stacktrace-t.c

>>>               unittest/mysys/CMakeFiles/stacktrace-t.dir/stacktrace-t.c.o:(test_my_safe_print_str)

>>> referenced by stacktrace-t.c

>>>               unittest/mysys/CMakeFiles/stacktrace-t.dir/stacktrace-t.c.o:(test_my_safe_print_str)

c++: error: linker command failed with exit code 1 (use -v to see invocation)

ninja: build stopped: subcommand failed.