From e074f720c71e2ecf74932af80cbfbf670565730e Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Mon, 29 Aug 2016 18:56:46 +0200
Subject: Include missing forward declaration of SparseMatrix

---
 unsupported/Eigen/KroneckerProduct | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'unsupported/Eigen/KroneckerProduct')

diff --git a/unsupported/Eigen/KroneckerProduct b/unsupported/Eigen/KroneckerProduct
index c932c06a6..5f5afb8cf 100644
--- a/unsupported/Eigen/KroneckerProduct
+++ b/unsupported/Eigen/KroneckerProduct
@@ -13,6 +13,8 @@
 
 #include "../../Eigen/src/Core/util/DisableStupidWarnings.h"
 
+#include "../../Eigen/src/SparseCore/SparseUtil.h"
+
 namespace Eigen {
 
 /**
-- 
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