cmake OpusFile examples

JGRennison/OpenTTD-patches CMakeLists.txt :145 

find_package(OpusFile)

Warzone2100/warzone2100 lib/sound/CMakeLists.txt :51 

find_package(Opusfile QUIET)

2468785842/krkr2 cpp/core/CMakeLists.txt :88 

find_package(OpusFile CONFIG REQUIRED)