$OpenBSD: patch-src_FileLock_h,v 1.1 2006/10/12 14:18:53 alek Exp $
--- src/FileLock.h.orig	Fri Oct  6 19:28:24 2006
+++ src/FileLock.h	Fri Oct  6 19:28:28 2006
@@ -31,7 +31,7 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <cerrno>
-
+#include <unistd.h>
 
 /**
  * This class provides an easy way to lock non-critical
