From 9fd87d6d7d7d0966f03d28ddb27149e193328748 Mon Sep 17 00:00:00 2001
From: jzmaddock <john@johnmaddock.co.uk>
Date: Mon, 9 Jul 2018 17:54:42 +0100
Subject: [PATCH] CUDA 9 does support constexpr for msvc.

---
 include/boost/config/compiler/nvcc.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/boost/config/compiler/nvcc.hpp b/include/boost/config/compiler/nvcc.hpp
index 64909409..ed035fcf 100644
--- a/include/boost/config/compiler/nvcc.hpp
+++ b/include/boost/config/compiler/nvcc.hpp
@@ -33,8 +33,8 @@
 #if (BOOST_CUDA_VERSION > 8000000) && (BOOST_CUDA_VERSION < 8010000)
 #   define BOOST_NO_CXX11_VARIADIC_TEMPLATES
 #endif
-// Most recent CUDA (8.0) has no constexpr support in msvc mode:
-#if defined(_MSC_VER)
+// CUDA (8.0) has no constexpr support in msvc mode:
+#if defined(_MSC_VER) && (BOOST_CUDA_VERSION < 9000000)
 #  define BOOST_NO_CXX11_CONSTEXPR
 #endif