$OpenBSD: patch-simgear_misc_sg_path_cxx,v 1.2 2016/09/19 22:38:50 pascal Exp $
--- simgear/misc/sg_path.cxx.orig	Thu Sep  8 08:52:42 2016
+++ simgear/misc/sg_path.cxx	Mon Sep 19 16:14:31 2016
@@ -32,6 +32,7 @@
 #include <stdio.h>
 #include <sys/stat.h>
 #include <errno.h>
+#include <unistd.h>
 #include <fstream>
 #include <cstdlib>
 
