$OpenBSD: patch-src_tool_file_tools_cpp,v 1.1 2008/10/01 11:24:08 landry Exp $
--- src/tool/file_tools.cpp.orig	Mon Sep 22 13:10:06 2008
+++ src/tool/file_tools.cpp	Mon Sep 22 13:10:45 2008
@@ -23,6 +23,7 @@
 #include <fstream>
 #include <sys/stat.h>
 #include <errno.h>
+#include <unistd.h>
 
 #ifdef WIN32
    // To get SHGetSpecialFolderPath
