From 817d2c90b97323476049b008465cd74efe2830e7 Mon Sep 17 00:00:00 2001
From: Mustafa Al-Bassam <mus@musalbas.com>
Date: Wed, 22 Aug 2018 19:33:22 +0100
Subject: [PATCH] Add -march=native for compilers that support it

---
 CMakeLists.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 041deb6..5ef59d8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,6 +28,11 @@ if(NOT CMAKE_BUILD_TYPE)
     set(CMAKE_BUILD_TYPE Release)
 endif()
 
+check_cxx_compiler_flag("-march=native" COMPILER_SUPPORTS_MARCH_NATIVE)
+if(COMPILER_SUPPORTS_MARCH_NATIVE)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native")
+endif()
+
 if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
     check_cxx_compiler_flag("/O2" CXX_FLAG_O2)
     check_cxx_compiler_flag("/Oy" CXX_FLAG_Oy)