From 52e19cb61c82ab130ffd6f4a6557d7301b2ba595 Mon Sep 17 00:00:00 2001
From: "Wang, Xiang W" <xiang.w.wang@intel.com>
Date: Thu, 5 Sep 2019 08:16:08 -0400
Subject: [PATCH] gcc-9:disable redundant move check for older compiler
 versions

---
 CMakeLists.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3801f994..61057819 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -395,6 +395,12 @@ if (CXX_IGNORED_ATTR)
     set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -Wno-ignored-attributes")
 endif()
 
+# gcc 9 complains about redundant move for returned variable
+CHECK_CXX_COMPILER_FLAG("-Wredundant-move" CXX_REDUNDANT_MOVE)
+if (CXX_REDUNDANT_MOVE)
+    set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -Wno-redundant-move")
+endif()
+
 # note this for later
 # g++ doesn't have this flag but clang does
 CHECK_CXX_COMPILER_FLAG("-Wweak-vtables" CXX_WEAK_VTABLES)