The current Link Instruments MSO-19 driver (unfinished) uses libudev as hard dependency. Since udev is a Linux-only system and libudev is Linux-only, this will prevent the driver from working on any other OS, e.g. Windows, Mac OS X, FreeBSD, OpenBSD, and so on. Thus, we should either drop the libudev dependency completely, or at the very least make it a (compile-time) optional thing that only gets included when libsigrok gets built for Linux.
Helooooooooo /me waves I've written patches to do this over a month ago.
Fixed in 8c21897f59b4b78e1caade7cf7b11318b11b3f8b