$NetBSD: patch-ab,v 1.4 2006/03/14 02:06:28 joerg Exp $

--- balance.h.orig	2004-05-27 12:24:30.000000000 +0000
+++ balance.h
@@ -6,7 +6,7 @@
 #include <signal.h>
 #include <stdlib.h>
 
-#ifdef __FreeBSD__
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__APPLE__) || defined(__INTERIX) || defined(__DragonFly__)
 #define BalanceBSD 1
 #endif 
 
