That’s not how game development using an engine works… RAGE likely compiles code for at minimum a majority of modern hardware running Windows & MacOS with next to no tweaking, and likely Xbox & PlayStation consoles with very minimal changes.

Most game engines used on large projects generally are made to handle as much of a variety of hardware as possible with little to no changes in the code – if you make a game using Unreal Engine or Unity for example it will almost certainly be able to work on Xbox, Playstation, and most PCs just fine. It’s likely the same with RAGE.