$OpenBSD: patch-utmp_c,v 1.2 2007/09/16 20:58:19 jasper Exp $
--- utmp.c.orig	Sun Sep 16 21:57:10 2007
+++ utmp.c	Sun Sep 16 21:57:29 2007
@@ -7,6 +7,9 @@
 #include	<utmp.h>
 #include	<stdio.h>
 #include	<string.h>
+#ifdef HAVE_UNISTD_H
+#include        <unistd.h>
+#endif
 
 #ifdef DEBUG_UTMP
 #undef  UTMP_FILE