This was nice. I took the road less traveled and tried building on Windows and AMD.

Spoiler: Vulkan with MSYS2 was indeed the easiest to get up and running.

I actually tried w64devkit first and it worked properly for llama-server, but there were inexplicable plug-in problems with llama-bench.

Edit: I tried w64devkit before I read this write-up and I was left wondering what to try next, so the timing was perfect.