From e4d45f3440013666eb26860a7912e6d7e594ee6c Mon Sep 17 00:00:00 2001
From: Benoit Steiner <benoit.steiner.goog@gmail.com>
Date: Thu, 12 Nov 2015 18:18:35 -0800
Subject: [PATCH] Only enable the use of const expression when nvcc is called
 with the -std=c++11 option

---
 Eigen/src/Core/util/Macros.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Eigen/src/Core/util/Macros.h b/Eigen/src/Core/util/Macros.h
index 9540c0330..f4034ebdb 100644
--- a/Eigen/src/Core/util/Macros.h
+++ b/Eigen/src/Core/util/Macros.h
@@ -353,8 +353,10 @@
 
 // Does the compiler support const expressions?
 #ifdef __CUDACC__
-#define EIGEN_HAS_CONSTEXPR 1
-  // Const expressions are not supported regardless of what host compiler is used 
+// Const expressions are supported provided that c++11 is enabled
+#if __cplusplus > 199711L
+  #define EIGEN_HAS_CONSTEXPR 1
+#endif
 #elif (defined(__cplusplus) && __cplusplus >= 201402L) || \
     EIGEN_GNUC_AT_LEAST(4,8)
 #define EIGEN_HAS_CONSTEXPR 1