lat9nq ddc47e6df8 cmake: General improvements to libusb linking ...

Delegates libusb external communication to externals/CMakeLists.txt
Ensures an interface library `usb` for every pathway
input_common just links to the `usb` library now
externals/libusb/CMakeLists.txt sets variables to override SDL2's libusb
finding
Other minor cleanup

2021-06-03 03:49:35 -04:00

9.0 KiB

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