From 2eba8acc23db1905023fe887dff1bb3c4f962c2e Mon Sep 17 00:00:00 2001
From: Maxim Poliakovski <maximumspatium@googlemail.com>
Date: Fri, 9 Oct 2020 12:39:31 +0200
Subject: [PATCH] Fix MSVC compilation.

---
 machines/machinefactory.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/machines/machinefactory.cpp b/machines/machinefactory.cpp
index d155987..7540dee 100644
--- a/machines/machinefactory.cpp
+++ b/machines/machinefactory.cpp
@@ -31,6 +31,7 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #include <cinttypes>
 #include <cstring>
 #include <fstream>
+#include <functional>
 #include <iostream>
 #include <map>
 #include <memory>