I tried to install the package rkunter from the ports, and it failed on lsof because I did not have the kernel source installed. I installed the kernel source using the svn method (9.0-Stable). When I try to compile rkhunter or lsof again using make install clean I get the error: Code:===> lsof-4.86,7 requires kernel sources *** Error code 1 I now have the sources in the /usr/src directory, so what am I missing? How can I fix a port when it started and errored out? (specifically, how can I get lsof and rkhunter to compile?) Basic install info: amd64 9.0 Release Using portsnap for port maintenance.