cmake HAVE_MPGLIB examples

spotify/pedalboard CMakeLists.txt :345 

target_compile_definitions(pedalboard_native PRIVATE 
        HAVE_MPGLIB 
        HAVE_XMMINTRIN_H
    )

spotify/pedalboard CMakeLists.txt :353 

target_compile_definitions(pedalboard_native PRIVATE 
        HAVE_MPGLIB
    )