How to specify dependencies in qt_add_qml_module (CMake for Qt 6.2)

When using qt_add_qml_module to specify a QML module, how do you handle Qt modules that it depends on (e.g. QtMultimedia)?

If I have class Synthesizer that extends QML, but which has no dependencies, the following works fine:

qt_add_qml_module(Synth
    URI Synth
    VERSION 1.0
    SOURCES
        Synthesizer.h Synthesizer.cpp
)

target_include_directories(Synthplugin
     PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}
)

target_link_libraries(myapp
    PRIVATE Qt6::Quick
    Synth
)

However if Synthesizer uses QtMultimedia classes, then this is insufficient, and results in errors like:

Undefined symbols for architecture arm64:
  "QAudioSink::start()", referenced from:
      Synthesizer::start() in Synthesizer.cpp.o