$NetBSD: patch-af,v 1.5 2012/07/18 06:37:41 adam Exp $

--- src/preferences.cpp.orig	2010-01-01 13:16:49.000000000 +0000
+++ src/preferences.cpp
@@ -33,6 +33,7 @@
 #include "serialization/parser.hpp"
 
 #include <sys/stat.h> // for setting the permissions of the preferences file
+#include <unistd.h>
 
 static lg::log_domain log_filesystem("filesystem");
 #define ERR_FS LOG_STREAM(err, log_filesystem)