Index: CMakeLists.txt
--- CMakeLists.txt.orig	2016-08-25 09:59:05.000000000 +0200
+++ CMakeLists.txt	2018-10-13 21:43:40.068537000 +0200
@@ -50,7 +50,7 @@
 endif(CCACHE_FOUND)
 
 if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native -Wall -Wextra -Werror")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native")
     if (RAPIDJSON_BUILD_CXX11)
         if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.7.0")
             set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")