if(MBP_TOP_LEVEL_BUILD)
    set(MBP_ENABLE_QEMU FALSE CACHE BOOL "Enable running tests in QEMU")

    if(MBP_ENABLE_QEMU)
        foreach(qemu_arch arm aarch64 i386 x86_64)
            set(qemu_binary "qemu-system-${qemu_arch}")

            find_program(
                "QEMU_SYSTEM_${qemu_arch}"
                "${qemu_binary}"
                DOC "Path to ${qemu_binary} binary"
            )
            if(NOT QEMU_SYSTEM_${qemu_arch})
                message(FATAL_ERROR "MBP_ENABLE_QEMU is enabled, but ${qemu_binary} was not found")
            endif()
        endforeach()

        function(android_abi_to_qemu_arch abi out_var)
            if("${abi}" STREQUAL armeabi-v7a)
                set("${out_var}" arm PARENT_SCOPE)
            elseif("${abi}" STREQUAL arm64-v8a)
                set("${out_var}" aarch64 PARENT_SCOPE)
            elseif("${abi}" STREQUAL x86)
                set("${out_var}" i386 PARENT_SCOPE)
            elseif("${abi}" STREQUAL x86_64)
                set("${out_var}" x86_64 PARENT_SCOPE)
            else()
                message(FATAL_ERROR "Unknown ABI: %{abi}")
            endif()
        endfunction()
    endif()
elseif(${MBP_BUILD_TARGET} STREQUAL android-system)
    if(NOT MBP_ENABLE_QEMU)
        return()
    endif()

    set(qemu_extra_args)
    set(qemu_console)
    set(qemu_9p_device)

    if("${ANDROID_ABI}" STREQUAL armeabi-v7a)
        list(APPEND qemu_extra_args -machine virt -cpu cortex-a15)
        set(qemu_console ttyAMA0)
        set(qemu_9p_device virtio-9p-device)
    elseif("${ANDROID_ABI}" STREQUAL arm64-v8a)
        list(APPEND qemu_extra_args -machine virt -cpu cortex-a57)
        set(qemu_console ttyAMA0)
        set(qemu_9p_device virtio-9p-pci)
    elseif("${ANDROID_ABI}" STREQUAL x86)
        list(APPEND qemu_extra_args -cpu Nehalem)
        set(qemu_console ttyS0)
        set(qemu_9p_device virtio-9p-pci)
    elseif("${ANDROID_ABI}" STREQUAL x86_64)
        list(APPEND qemu_extra_args -cpu Nehalem)
        set(qemu_console ttyS0)
        set(qemu_9p_device virtio-9p-pci)
    endif()

    set(qemu_command
        # android/CMakeLists.txt will set QEMU_SYSTEM_COMMAND to the appropriate
        # QEMU_SYSTEM_* value above
        "${QEMU_SYSTEM_COMMAND}"
        -kernel "${TEST_RUNNER_IMAGE_DIR}/kernel.img"
        -initrd "${TEST_RUNNER_IMAGE_DIR}/ramdisk.img"
        -smp 4
        -m 512
        -nographic
        -no-reboot
        -fsdev "local,id=workspace,path=${CMAKE_BINARY_DIR},security_model=none"
        -device "${qemu_9p_device},fsdev=workspace,mount_tag=workspace"
        ${qemu_extra_args}
    )

    set(qemu_kernel_args "console=${qemu_console} qemu-mount=workspace")

    add_custom_target(
        qemu-shell
        ${qemu_command}
        -append "${qemu_kernel_args}"
        VERBATIM
        USES_TERMINAL
    )

    add_custom_command(
        OUTPUT "${CMAKE_BINARY_DIR}/cmake/qemu_run_tests.sh"
        MAIN_DEPENDENCY "${CMAKE_SOURCE_DIR}/cmake/qemu_run_tests.sh"
        COMMAND ${CMAKE_COMMAND} -E copy
                "${CMAKE_SOURCE_DIR}/cmake/qemu_run_tests.sh"
                "${CMAKE_BINARY_DIR}/cmake/qemu_run_tests.sh"
    )

    add_custom_target(
        qemu-tests
        ${qemu_command}
        -append "${qemu_kernel_args} quiet post-init=/mnt/workspace/cmake/qemu_run_tests.sh"
        DEPENDS "${CMAKE_BINARY_DIR}/cmake/qemu_run_tests.sh"
        VERBATIM
        USES_TERMINAL
    )
endif()