sysutils/gdmap doesn't compile because of broken Makefile:
===> Extracting for gdmap-0.5.0
=> Checksum OK for gdmap-0.5.0.tar.gz.
===> Patching for gdmap-0.5.0
sed: -i may not be used with stdin
*** Error code 1
Stop in /usr/ports/sysutils/gdmap.
Reason is missing backslash on the end of the line in REINPLACE_CMD
How-To-Repeat: cd /usr/ports/sysutiles/gdmap && make