+static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& ae);
+static int instantiate (const std::string& arg1, const std::string& arg2);
+static int deinstantiate ();
+static bool already_configured ();
+static bool available ();
+
+static ARDOUR::AudioBackendInfo _descriptor = {
+ "JACK",
+ instantiate,
+ deinstantiate,
+ backend_factory,
+ already_configured,
+ available
+};
+