From da30235d4472f6561a37961a6dffaf54ab544a9c Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <icculus@icculus.org>
Date: Sat, 27 Jun 2020 02:00:58 -0400
Subject: cmake: Fix Metal detection on macOS/iOS.

Apparently the "-x objective-c" made it down to the linker, who then treats
the .o file as Objective-C source code.  Apparently the -ObjC argument does
the same thing but gets ignored by the linker.

Fixes Bugzilla #4988.
---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b703c34d2..33d505530 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1742,7 +1742,7 @@ elseif(APPLE)
 
     if(VIDEO_VULKAN OR VIDEO_METAL OR RENDER_METAL)
       set(ORIG_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
-      set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -x objective-c")
+      set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -ObjC")
       check_c_source_compiles("
         #include <AvailabilityMacros.h>
         #import <Metal/Metal.h>
-- 
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