(03-06-2018, 03:41 AM)axlestreet Wrote: I'm a little nervous to bypass SIP, do I need to do that?
If you're using a recent version of macOS, then yes, you need to do that if you want to use Dolphin's native support for Wii U GC adapters. But if you want to use the adapter in PC mode (with the slight disadvantages that come from that), you don't need to do it.
(03-06-2018, 03:41 AM)axlestreet Wrote: Does anyone know if this procedure even works with nonofficial adapters?
It works with all adapters that are compatible with Smash Bros for Wii U.