+#include "pbd/compose.h"
+#include "pbd/error.h"
+#include "pbd/xml++.h"
+
+#include "ardour/buffer_set.h"
+#include "ardour/chan_count.h"
+#include "ardour/chan_mapping.h"
+#include "ardour/data_type.h"
+#include "ardour/midi_buffer.h"
+#include "ardour/midi_state_tracker.h"
+#include "ardour/plugin.h"
+#include "ardour/plugin_manager.h"
+#include "ardour/session.h"
+#include "ardour/types.h"
+
+#ifdef AUDIOUNIT_SUPPORT
+#include "ardour/audio_unit.h"
+#endif