From a0b4fb2d59f77e317883f5a48e53c5addc0b27c3 Mon Sep 17 00:00:00 2001
From: Daniel Arndt <arndtd@ornl.gov>
Date: Tue, 20 Aug 2019 13:36:34 -0400
Subject: [PATCH] Fix tuple.h

---
 include/deal.II/base/std_cxx17/tuple.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/deal.II/base/std_cxx17/tuple.h b/include/deal.II/base/std_cxx17/tuple.h
index 038ffcb43a..5d56d82b05 100644
--- a/include/deal.II/base/std_cxx17/tuple.h
+++ b/include/deal.II/base/std_cxx17/tuple.h
@@ -19,6 +19,8 @@
 
 #ifndef DEAL_II_WITH_CXX17
 #  include <deal.II/base/std_cxx14/utility.h>
+#else
+#  include <tuple>
 #endif
 
 #include <cmath>
-- 
2.39.5