SDL: cmake: make SDL_CPU_xxx variable visible when using CMAKE_OSX_ARCHITECTURES

SDL Commits
1 
From ebb52973e1ded1a4ff5f860556080be1e4e9e2b2 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Thu, 3 Apr 2025 18:23:33 +0200
Subject: [PATCH] cmake: make SDL_CPU_xxx variable visible when using
 CMAKE_OSX_ARCHITECTURES

---
 cmake/sdlcpu.cmake | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/cmake/sdlcpu.cmake b/cmake/sdlcpu.cmake
index 0c2ca1f5e9edd..5c4b575ec0fac 100644
--- a/cmake/sdlcpu.cmake
+++ b/cmake/sdlcpu.cmake
@@ -4,15 +4,15 @@ function(SDL_DetectTargetCPUArchitectures DETECTED_ARCHS)
 
   if(APPLE AND CMAKE_OSX_ARCHITECTURES)
     foreach(known_arch IN LISTS known_archs)
-      set(SDL_CPU_${known_arch} "0")
+      set(SDL_CPU_${known_arch} "0" PARENT_SCOPE)
     endforeach()
     set(detected_archs)
     foreach(osx_arch IN LISTS CMAKE_OSX_ARCHITECTURES)
       if(osx_arch STREQUAL "x86_64")
-        set(SDL_CPU_X64 "1")
+        set(SDL_CPU_X64 "1" PARENT_SCOPE)
         list(APPEND detected_archs "X64")
       elseif(osx_arch STREQUAL "arm64")
-        set(SDL_CPU_ARM64 "1")
+        set(SDL_CPU_ARM64 "1" PARENT_SCOPE)
         list(APPEND detected_archs "ARM64")
       endif()
     endforeach()