From af89b62194de51daca109f32d783633a0b563bc0 Mon Sep 17 00:00:00 2001
From: scribam <scribam@users.noreply.github.com>
Date: Sun, 18 Mar 2018 08:59:46 +0100
Subject: [PATCH] Check if the compiler supports "-march=native"

---
 rpcs3/CMakeLists.txt | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/rpcs3/CMakeLists.txt b/rpcs3/CMakeLists.txt
index 65699a58cc..0b480859b4 100644
--- a/rpcs3/CMakeLists.txt
+++ b/rpcs3/CMakeLists.txt
@@ -90,6 +90,13 @@ else()
 	add_definitions(-DGLX_GLXEXT_PROTOTYPES)
 endif()
 
+if(USE_NATIVE_INSTRUCTIONS)
+	CHECK_CXX_COMPILER_FLAG("-march=native" COMPILER_SUPPORTS_MARCH_NATIVE)
+	if(COMPILER_SUPPORTS_MARCH_NATIVE)
+		add_compile_options(-march=native)
+	endif()
+endif()
+
 if(NOT MSVC)
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fexceptions")
 	# This hides our LLVM from mesa's LLVM, otherwise we get some unresolvable conflicts.
@@ -108,10 +115,6 @@ if(NOT MSVC)
 
 	add_compile_options(-msse -msse2 -mcx16 -mrtm)
 
-	if(USE_NATIVE_INSTRUCTIONS)
-		add_compile_options(-march=native)
-	endif()
-
 	if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
 		# This fixes 'some' of the st11range issues. See issue #2516
 		if(APPLE)