Compilling

Hello.

 I'm trying to install procmail. I have procmail compiled and it seems 
to working fine for deviding my my messages onto different files. but 
when I get to the compile of formail I get these errors.

cc -c -O formail.c
formail.c:38: `daemon' redeclared as different kind of symbol
/usr/include/stdlib.h:136: previous declaration of `daemon'
formail.c:38: warning: `daemon' was declared `extern' and later `static'
*** Error code 1

 The system is: 
BSD/OS planetx.xbbs.com 2.0.1 BSDI BSD/OS 2.0.1 Kernel #8: Mon Apr  1 
20:01:53 PST 1996     
marlin(_at_)planetx(_dot_)xbbs(_dot_)com:/usr/src/sys/compile/LOCAL  
i386

 Thanks.