I'm trying to compile the argyll developer snapshot with libusb1 support (which is great for stability, thanks) but can't resolve the following symbol: libusb_handle_events_check. I can't find it in libusb1 upstream, just in the argyll in-tree copy. In Fedora we can't bundle libusb1. Could you please push this upstream to Daniel if this belongs in the libusb1 api. Thanks. Richard.