From: Wang, Xiang W <xiang.w.wang@intel.com>
Date: Thu, 5 Sep 2019 12:16:08 +0000 (-0400)
Subject: gcc-9:disable redundant move check for older compiler versions
X-Git-Tag: v5.2.1^2~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=52e19cb61c82ab130ffd6f4a6557d7301b2ba595;p=thirdparty%2Fvectorscan.git

gcc-9:disable redundant move check for older compiler versions
---

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)