Fix the build for older macOS.

[dcpomatic.git] / src / lib / shuffler.h

diff --git a/src/lib/shuffler.h b/src/lib/shuffler.h
index b0a416b80f33edb9957919f6dc82d4cc1e6ef3eb..476f571b4571d88fef4d14eba5e5aaf56afef15d 100644 (file)
--- a/src/lib/shuffler.h
+++ b/src/lib/shuffler.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2018 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2018-2021 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -18,14 +18,21 @@
 
 */
 
-#include "types.h"
+
+#ifndef DCPOMATIC_SHUFFLER_H
+#define DCPOMATIC_SHUFFLER_H
+
+
 #include "content_video.h"
+#include "types.h"
 #include <boost/signals2.hpp>
 
+
 struct shuffler_test5;
 
 class Piece;
 
+
 class Shuffler
 {
 public:
@@ -44,3 +51,7 @@ private:
        boost::optional<ContentVideo> _last;
        static int const _max_size;
 };
+
+
+#endif
+