You have a machine (a master host) with several idividually installed packages. You want those packages to be rebuilt somewhere else (slave host). Do this:
1. On the master host #
pkg_info -Q PKGPATH -a > pkgs_i_want_to_have 2. Copy the generated file to the slave host, and issue as root:#
cat pkgs_i_want_to_have | (while read pp ; do cd /usr/pkgsrc/$pp ; make && make install ; done)
Simple enough, eh?