scripts/startup/bl_ui/space_userpref.py

@@ -610,12 +610,6 @@ class USERPREF_PT_system_cycles_devices(SystemPanel, CenterAlignMixIn, Panel):
 class USERPREF_PT_system_gpu_backend(SystemPanel, CenterAlignMixIn, Panel):
     bl_label = "GPU Backend"
 
-    @classmethod
-    def poll(cls, _context):
-        # Only for Apple so far
-        import sys
-        return sys.platform == "darwin"
-
     def draw_centered(self, context, layout):
         import gpu
         prefs = context.preferences

source/blender/makesrna/intern/CMakeLists.txt

@@ -377,6 +377,14 @@ if(WITH_XR_OPENXR)
   add_definitions(-DWITH_XR_OPENXR)
 endif()
 
+if(WITH_VULKAN_METAL)
+  add_definitions(-DWITH_VULKAN_METAL)
+endif()
+
+if(WITH_VULKAN_BACKEND)
+  add_definitions(-DWITH_VULKAN_BACKEND)
+endif()
+
 if(WITH_GMP)
   add_definitions(-DWITH_GMP)
 endif()