$NetBSD: patch-ak,v 1.1 2008/12/20 19:44:00 jmcneill Exp $

--- src/kit/kit-lib.c.orig	2008-12-20 14:29:40.000000000 -0500
+++ src/kit/kit-lib.c	2008-12-20 14:30:22.000000000 -0500
@@ -118,7 +118,12 @@ kit_getline (char **lineptr, size_t *n, 
 #endif
 
 #ifndef HAVE_CLEARENV
+#ifdef __APPLE__
+#include <crt_externs.h>
+#define environ (*_NSGetEnviron())
+#else
 extern char **environ;
+#endif
 
 int
 kit_clearenv (void)