From eff4f975f7e6727baae813b2458b1e7725159c1b Mon Sep 17 00:00:00 2001
From: Daniel Arndt <arndtd@ornl.gov>
Date: Thu, 9 Jan 2020 17:44:46 -0500
Subject: [PATCH] Fix external declaration of Tensor::n_independent_components

---
 include/deal.II/base/tensor.h | 7 +++++++
 source/base/tensor.cc         | 9 ---------
 2 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/include/deal.II/base/tensor.h b/include/deal.II/base/tensor.h
index 12060b444e..2351334fb9 100644
--- a/include/deal.II/base/tensor.h
+++ b/include/deal.II/base/tensor.h
@@ -1065,6 +1065,9 @@ Tensor<0, dim, Number>::serialize(Archive &ar, const unsigned int)
 }
 
 
+template <int dim, typename Number>
+constexpr unsigned int Tensor<0, dim, Number>::n_independent_components;
+
 
 /*-------------------- Inline functions: Tensor<rank,dim> --------------------*/
 
@@ -1567,6 +1570,10 @@ Tensor<rank_, dim, Number>::serialize(Archive &ar, const unsigned int)
 }
 
 
+template <int rank, int dim, typename Number>
+constexpr unsigned int Tensor<rank, dim, Number>::n_independent_components;
+
+
 /* ----------------- Non-member functions operating on tensors. ------------ */
 
 /**
diff --git a/source/base/tensor.cc b/source/base/tensor.cc
index eb5a8d7233..7ed01375a8 100644
--- a/source/base/tensor.cc
+++ b/source/base/tensor.cc
@@ -24,15 +24,6 @@
 
 DEAL_II_NAMESPACE_OPEN
 
-
-template <int dim, typename Number>
-constexpr unsigned int Tensor<0, dim, Number>::n_independent_components;
-
-template <int rank, int dim, typename Number>
-constexpr unsigned int Tensor<rank, dim, Number>::n_independent_components;
-
-
 #include "tensor.inst"
 
-
 DEAL_II_NAMESPACE_CLOSE
-- 
2.39.5