Package: freebsd-buildutils Version: 5.2.1+20041028 It seems like there is a missing link for freebsd-mkdep that should point to mkdep. adding a link fixed the problem:
~$ which freebsd-mkdep /usr/bin/freebsd-mkdep ~$ file /usr/bin/freebsd-mkdep /usr/bin/freebsd-mkdep: symbolic link to `../lib/freebsd/mkdep'
