Modern versions of FreeBSD -- at least 2.2.6, probably anything later --
need the LIBS line in the Makefile set as follows:

LIBS=-ldescrypt -lcompat

This forces FreeBSD to use 13-character DES password hashes which
EBBS needs. The instructions in ebbs-3.1.1's Makefile are for an
old FreeBSD release.

Also, in pbbs/stuff.c, move these two lines:

#include "osdeps.h"
#include "io.h"

above the #if LACKS_MALLOC_H directive to avoid a compiler warning.

--
Ray Rocker
rocker@ametro.net