FreeBSD 2.0.3 port closefrom library?

[Chris <cjl@viptalk.net>]

When trying to compile freebsd port of 2.0.3 on 6.3 with the  
postgresql83 library (also from ports), I get the following:

.libs/exec.o(.text+0x536): In function `radius_exec_program':
: undefined reference to `closefrom'
.libs/session.o(.text+0x4fa): In function `rad_check_ts':
: undefined reference to `closefrom'
gmake[4]: *** [radiusd] Error 1

I'm not familiar with "closefrom"  Which library needs to be included?

Thanks.