From 39c1a3732f6b22e79ccfee1918dee91df05233d8 Mon Sep 17 00:00:00 2001
From: Markus Franke <markus.franke@posteo.de>
Date: Sat, 16 May 2020 20:41:03 +0200
Subject: [PATCH] Fix missing <functional> include

Needed with gcc 8.4
---
 src/uscxml/interpreter/InterpreterMonitor.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/uscxml/interpreter/InterpreterMonitor.h b/src/uscxml/interpreter/InterpreterMonitor.h
index 64c281c01..d3b9c6336 100644
--- a/src/uscxml/interpreter/InterpreterMonitor.h
+++ b/src/uscxml/interpreter/InterpreterMonitor.h
@@ -25,6 +25,7 @@
 #include "uscxml/interpreter/Logging.h"
 #include "uscxml/debug/InterpreterIssue.h"
 
+#include <functional>
 #include <mutex>
 
 #define USCXML_MONITOR_CATCH(callback) \