From 46bcb70969829f243eaae0360b70859e68450dee Mon Sep 17 00:00:00 2001
From: Benoit Steiner <benoit.steiner.goog@gmail.com>
Date: Fri, 29 Apr 2016 15:20:59 -0700
Subject: [PATCH] Don't turn on const expressions when compiling with gcc >=
 4.8 unless the -std=c++11 option has been used

---
 Eigen/src/Core/util/Macros.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Eigen/src/Core/util/Macros.h b/Eigen/src/Core/util/Macros.h
index de1265af3..69863d826 100644
--- a/Eigen/src/Core/util/Macros.h
+++ b/Eigen/src/Core/util/Macros.h
@@ -375,7 +375,7 @@
   #define EIGEN_HAS_CONSTEXPR 1
 #endif
 #elif __has_feature(cxx_relaxed_constexpr) || (defined(__cplusplus) && __cplusplus >= 201402L) || \
-    EIGEN_GNUC_AT_LEAST(4,8)
+  (EIGEN_GNUC_AT_LEAST(4,8) && (__cplusplus > 199711L))
 #define EIGEN_HAS_CONSTEXPR 1
 #endif