Re-add libretro core

src/common/CMakeLists.txt

@@ -222,6 +222,9 @@ endif()
 if(APPLE)
   # Needed for Vulkan Swap Chain.
   target_link_libraries(common PRIVATE "objc")
+endif()
+
+if(APPLE AND NOT BUILD_LIBRETRO_CORE)
   target_sources(common PRIVATE
     gl/context_agl.mm
     gl/context_agl.h

src/common/vulkan/shader_compiler.cpp

@@ -124,7 +124,9 @@ bool InitializeGlslang()
     return false;
   }
 
+#ifndef LIBRETRO
   std::atexit([]() { glslang::FinalizeProcess(); });
+#endif
 
   glslang_initialized = true;
   return true;

src/common/window_info.h

@@ -13,6 +13,7 @@ struct WindowInfo
     MacOS,
     Android,
     Display,
+    Libretro,
   };
 
   enum class SurfaceFormat