Building a cross-platform project for Windows can be a bit tricky since there are quite a lot of different development environments for Windows, and it's ncie to be able to support as many as possible.

Library binaries should be as stable and compatible as possible, so ideally we want to build libusb so that it will work both with a GNU toolchain (MinGW) and an MS toolchain, for dynamic, static and import library. It's not trivial, but could perhaps be done without too much trouble.