if (PICO_SDK)
    add_library(opl INTERFACE)
    target_sources(opl INTERFACE
            ${CMAKE_CURRENT_LIST_DIR}/opl_api.c
            ${CMAKE_CURRENT_LIST_DIR}/emu8950.c
            ${CMAKE_CURRENT_LIST_DIR}/slot_render.cpp
            ${CMAKE_CURRENT_LIST_DIR}/opl_pico.c)
    target_compile_options(opl INTERFACE -fms-extensions) # want OPL_SLOT_RENDER to be unnamed within OPL_SLOT
    if (APPLE)
        target_compile_options(opl INTERFACE -Wno-microsoft-anon-tag)
    endif()
    target_compile_definitions(opl INTERFACE
            EMU8950_NO_RATECONV
    )
    target_include_directories(opl INTERFACE ${CMAKE_CURRENT_LIST_DIR})
    target_link_libraries(opl INTERFACE pico_audio_i2s hardware_gpio)
    if (PICO_ON_DEVICE)
        target_sources(opl INTERFACE
                ${CMAKE_CURRENT_LIST_DIR}/slot_render_pico.S
        )
        target_link_libraries(opl INTERFACE hardware_interp)
    endif()
else()
    add_library(opl INTERFACE)
    target_sources(opl INTERFACE
            ${CMAKE_CURRENT_LIST_DIR}/opl_api.c
            ${CMAKE_CURRENT_LIST_DIR}/opl.c
            ${CMAKE_CURRENT_LIST_DIR}/opl_linux.c
            ${CMAKE_CURRENT_LIST_DIR}/opl_obsd.c
            ${CMAKE_CURRENT_LIST_DIR}/opl_queue.c
            ${CMAKE_CURRENT_LIST_DIR}/opl_sdl.c
            ${CMAKE_CURRENT_LIST_DIR}/opl_timer.c
            ${CMAKE_CURRENT_LIST_DIR}/opl_win32.c
            ${CMAKE_CURRENT_LIST_DIR}/ioperm_sys.c
            ${CMAKE_CURRENT_LIST_DIR}/emu8950.c
            ${CMAKE_CURRENT_LIST_DIR}/opl3.c)
    target_include_directories(opl
                               INTERFACE "."
                               "${CMAKE_CURRENT_BINARY_DIR}/../")
    target_link_libraries(opl INTERFACE SDL2::mixer)
endif()