It's a problem with the Makefile/sources...
It never reads you are in FreeBSD 7.0... Now I am at a WinXP station with no access to the code, but I'll send you an update once I get home.
If you can't wait, go over the source files and comment out any IF $OSVERSION referring to FreeBSD 7 or greater and the corresponding END, especially the one referring to msleep. You can also delete the IF loops for FreeBSD6.x
Hope this helps. I have been able to make my Logitech Webcam work with this hack... However, kopete will not recognize it, but you can play around streaming with VLC