It looks like you're trying to build with CMake, which isn't really something that works well on Windows right now. Make sure that you're using the Visual Studio solution file instead.
No. You just need to run that, and it fetches everything you need for building and running Dolphin with Qt. If you haven't done that (or if you didn't do it correctly), Dolphin's build process will give you an error message that specifically mentions the submodule.
(04-27-2018, 06:17 AM)ryanebola16 Wrote: I assume I need to compile QT 5 and then replace "submodule" with something?
No. You just need to run that, and it fetches everything you need for building and running Dolphin with Qt. If you haven't done that (or if you didn't do it correctly), Dolphin's build process will give you an error message that specifically mentions the submodule.