$OpenBSD: patch-src_editor_button_hpp,v 1.1 2020/10/21 00:05:36 sthen Exp $

Switched to boost::signals2

Index: src/editor/button.hpp
--- src/editor/button.hpp.orig
+++ src/editor/button.hpp
@@ -17,7 +17,7 @@
 #ifndef HEADER_PINGUS_EDITOR_BUTTON_HPP
 #define HEADER_PINGUS_EDITOR_BUTTON_HPP
 
-#include <boost/signal.hpp>
+#include <boost/signals2.hpp>
 
 #include "engine/gui/rect_component.hpp"
 
@@ -48,7 +48,7 @@ class Button : public GUI::RectComponent (public)
   void enable()  { enabled = true; }
   void disable() { enabled = false; }
 
-  boost::signal<void()> on_click;
+  boost::signals2::signal<void()> on_click;
 
 private:
   Button (const Button&);
