From aeb429b088923eb7549dbdde25fc081755d44a17 Mon Sep 17 00:00:00 2001
From: Wayne Stambaugh <stambaughw@gmail.com>
Date: Fri, 9 Sep 2022 09:17:26 -0400
Subject: [PATCH] Fix GCC build error.

---
 include/grid_tricks.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/grid_tricks.h b/include/grid_tricks.h
index ac34fb8d98..323e8f1281 100644
--- a/include/grid_tricks.h
+++ b/include/grid_tricks.h
@@ -27,6 +27,8 @@
 
 
 #include <bitset>
+#include <functional>
+
 #include <wx/grid.h>
 #include <wx/event.h>
 #include <wx/menu.h>