From: Matthias Maier <tamiko@43-1.org>
Date: Wed, 18 Jan 2023 16:53:27 +0000 (-0600)
Subject: include/deal.II/optimization/line_minimization.h add missing include
X-Git-Tag: v9.5.0-rc1~631^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F14699%2Fhead;p=dealii.git

include/deal.II/optimization/line_minimization.h add missing include
---

diff --git a/include/deal.II/optimization/line_minimization.h b/include/deal.II/optimization/line_minimization.h
index 22ddd17062..b5478e9f1c 100644
--- a/include/deal.II/optimization/line_minimization.h
+++ b/include/deal.II/optimization/line_minimization.h
@@ -27,6 +27,7 @@
 
 #include <algorithm>
 #include <fstream>
+#include <functional>
 #include <limits>
 #include <string>