$NetBSD: patch-ab,v 1.6 2006/04/28 20:43:42 joerg Exp $

--- src/FileLock.h.orig	2006-04-28 19:12:49.000000000 +0000
+++ src/FileLock.h
@@ -30,6 +30,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
+#include <unistd.h>
 #include <cerrno>