From 6452fd425ea813c854c175bce8586a8e35673954 Mon Sep 17 00:00:00 2001
From: Aurelius84 <zhangliujie@baidu.com>
Date: Wed, 22 Jul 2020 14:36:08 +0800
Subject: [PATCH] Add warning if gcc version > 8.2(#25635)

---
 cmake/flags.cmake | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index e6a77c38ab..6487869351 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -8,6 +8,8 @@ function(CheckCompilerCXX11Flag)
     if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
         if(${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 4.8)
             message(FATAL_ERROR "Unsupported GCC version. GCC >= 4.8 required.")
+        elseif(${CMAKE_CXX_COMPILER_VERSION} VERSION_GREATER 8.2)
+            message(WARNING "Found GCC ${CMAKE_CXX_COMPILER_VERSION} which is too high, recommended to use GCC 8.2")
         endif()
     elseif(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
         # cmake >= 3.0 compiler id "AppleClang" on Mac OS X, otherwise "Clang"
-- 
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