cmake Libudev examples

mixxxdj/mixxx cmake/modules/Findhidapi.cmake :148 

find_package(Libudev)

mandarine3ds/mandarine externals/libusb/CMakeLists.txt :76 

find_package(Libudev)

ovsky/sumi-emu externals/libusb/CMakeLists.txt :191 

find_package(Libudev)

Tinob/Ishiiruka CMakeLists.txt :494 

find_package(Libudev REQUIRED)