Created attachment 183734 [details] v0 FreeBSD doesn't implement libusb_has_capability() but the rest should work. Build tested on 10.3 i386+amd64, 11.0 i386+amd64, 12.0 amd64.
A commit references this bug: Author: martymac Date: Wed Jun 28 11:19:34 UTC 2017 New revision: 444567 URL: https://svnweb.freebsd.org/changeset/ports/444567 Log: Backport c5b3b52d553d: enable libusb hotplug on FreeBSD 11+ PR: 220223 Submitted by: jbeich Changes: head/emulators/dolphin-emu/Makefile head/emulators/dolphin-emu/files/patch-Source-Core-InputCommon-GCAdapter.cpp
Committed, thanks!