From 6b51540419b84d1a11934789218bba622c60b35b Mon Sep 17 00:00:00 2001
From: Yi Wang <yi.wang.2005@gmail.com>
Date: Sun, 6 Aug 2017 06:19:47 -0700
Subject: [PATCH] Add --expt-relaxed-constexpr to surppress Eigen warnings

---
 cmake/flags.cmake | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index d00a9bb3a30..065325d7956 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -115,7 +115,8 @@ set(COMMON_FLAGS
     -Wno-error=literal-suffix
     -Wno-error=sign-compare
     -Wno-error=unused-local-typedefs
-    -Wno-error=parentheses-equality # Warnings in Pybind11
+    -Wno-error=parentheses-equality # Warnings in pybind11
+    --expt-relaxed-constexpr # surppress warnings in Eigen
 )
 
 set(GPU_COMMON_FLAGS
@@ -130,6 +131,7 @@ set(GPU_COMMON_FLAGS
     -Wno-error=unused-local-typedefs
     -Wno-error=unused-function  # Warnings in Numpy Header.
     -Wno-error=array-bounds # Warnings in Eigen::array
+    --expt-relaxed-constexpr # surppress warnings in Eigen
 )
 
 if (APPLE)
-- 
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