From 2ec885b8b29ad290e065dd61bddd1d7a0ded58e4 Mon Sep 17 00:00:00 2001
From: Vas Crabb <vas@vastheman.com>
Date: Tue, 5 Jan 2016 12:26:47 +1100
Subject: [PATCH] don't link metal pre El Capitan

---
 scripts/src/osd/sdl.lua | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/scripts/src/osd/sdl.lua b/scripts/src/osd/sdl.lua
index 3eba9fdeb3b..6acb5a2d262 100644
--- a/scripts/src/osd/sdl.lua
+++ b/scripts/src/osd/sdl.lua
@@ -241,14 +241,20 @@ end
 
 if BASE_TARGETOS=="unix" then
 	if _OPTIONS["targetos"]=="macosx" then
+		local os_version = str_to_version(backtick("sw_vers -productVersion"))
+
 		links {
 			"Cocoa.framework",
 		}
 		linkoptions {
 			"-framework QuartzCore",
 			"-framework OpenGL",
-			"-weak_framework Metal",
 		}
+		if os_version>=101100 then
+			linkoptions {
+				"-weak_framework Metal",
+			}
+		end
 		if _OPTIONS["MACOSX_USE_LIBSDL"]~="1" then
 			linkoptions {
 				"-F" .. _OPTIONS["SDL_FRAMEWORK_PATH"],