$OpenBSD$
--- GG/PluginInterface.h.orig	Fri Dec 13 17:35:23 2013
+++ GG/PluginInterface.h	Fri Dec 13 17:35:57 2013
@@ -35,7 +35,7 @@
 #if defined(__APPLE__) && defined(__MACH__)
 # include "../libltdl/ltdl.h"
 #else
-# include <GG/ltdl.h>
+# include <ltdl.h>
 #endif
 
 #include <string>