Add an include guard.

diff --git a/src/lib/dcpomatic_time_coalesce.h b/src/lib/dcpomatic_time_coalesce.h
index 015326bdd7b73d4f9a5550a8606a1f8439b5167f..6540a8c3c561f514e3034f6ded70f853f2c09920 100644 (file)
--- a/src/lib/dcpomatic_time_coalesce.h
+++ b/src/lib/dcpomatic_time_coalesce.h
@@ -19,6 +19,10 @@
 */
 
 
+#ifndef DCPOMATIC_TIME_COALESCE_H
+#define DCPOMATIC_TIME_COALESCE_H
+
+
 #include "dcpomatic_time.h"
 #include <iostream>
 
@@ -54,3 +58,7 @@ std::list<TimePeriod<T>> coalesce (std::list<TimePeriod<T>> periods)
 
 
 }
+
+
+#endif
+