--- port/port.h.orig	Sat Apr 23 11:02:33 1994
+++ port/port.h	Thu Aug  3 22:34:01 2000
@@ -110,7 +110,7 @@
 #define LACK_SYS5
 #endif
 
-#if defined(ultrix3) || defined(sunos4) || defined(_IBMR2) || defined(ultrix4) || defined(__osf__)
+#if defined(ultrix3) || defined(sunos4) || defined(_IBMR2) || defined(ultrix4) || defined(__osf__) || defined(__FreeBSD__)
 #define SIGNAL_FN	void
 #else
 /* sequent, ultrix2, 4.3BSD (vax, hp), sunos3 */
