Unidentified subject!

Roman V. Procopovich (fly@nt.nienschanz.ru)
Mon, 24 Feb 1997 21:55:27 +0300 (MSK)

E-Mail: Roman V. Procopovich <fly@nt.nienschanz.ru>
Date: 02/24/97
Time: 21:55:27

I was trying to make binaries of "ifmail v2.9", but the compiler (gcc) return the next error message:
=>In file included from gettime.c:11:
=>clibrary.h:125: conflicting types for `lseek`
=>/usr/include/sys/types.h:84: previous declaration of `lseek`

Please, tell me what I must do to resolve this problem.
I'm not a C programmer :(
On my machine is running FreeBSD 2.1.5.

Thanks for your attention.
P.S. Sorry for my poor English.