$OpenBSD: patch-src_celengine_frametree_h,v 1.1 2018/11/12 16:08:02 naddy Exp $

Index: src/celengine/frametree.h
--- src/celengine/frametree.h.orig
+++ src/celengine/frametree.h
@@ -13,6 +13,7 @@
 #ifndef _CELENGINE_FRAMETREE_H_
 #define _CELENGINE_FRAMETREE_H_
 
+#include <cstddef>
 #include <vector>
 
 class Star;
