$OpenBSD$
--- lib/Interprocess.h.orig	Sat Sep 10 20:53:31 2011
+++ lib/Interprocess.h	Sat Sep 10 20:54:08 2011
@@ -1,3 +1,4 @@
+#include <sys/param.h>
 #include <boost/interprocess/sync/interprocess_mutex.hpp>
 #include <boost/interprocess/sync/interprocess_condition.hpp>
 #include <boost/interprocess/mapped_region.hpp>
@@ -51,4 +52,4 @@ struct SharedMem 
 		delete mr;
 		boost::interprocess::shared_memory_object::remove("vcmi_memory");
 	}
-};
\ No newline at end of file
+};