From d259b719d1703e9271612d944e432edd72be1051 Mon Sep 17 00:00:00 2001
From: Benoit Steiner <benoit.steiner.goog@gmail.com>
Date: Tue, 21 Jul 2015 17:35:58 -0700
Subject: [PATCH] Made sure that the use const expressions are not enabled when
 compiling with nvcc even when gcc 4.9 is used as the host compiler.

---
 Eigen/src/Core/util/Macros.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Eigen/src/Core/util/Macros.h b/Eigen/src/Core/util/Macros.h
index f1f7c3082..d187257a6 100644
--- a/Eigen/src/Core/util/Macros.h
+++ b/Eigen/src/Core/util/Macros.h
@@ -410,7 +410,9 @@
 #endif
 
 // Does the compiler support const expressions?
-#if (defined(__cplusplus) && __cplusplus >= 201402L) || \
+#ifdef __CUDACC__
+  // Const expressions are not supported regardless of what host compiler is used 
+#elif (defined(__cplusplus) && __cplusplus >= 201402L) || \
     EIGEN_GNUC_AT_LEAST(4,9)
 #define EIGEN_HAS_CONSTEXPR 1
 #endif