fixes for 98% of all the warnings/errors reported by OS X gcc on tiger

git-svn-id: svn://localhost/ardour2/branches/3.0@10179 d708f5d6-7413-0410-9779-e7cbd77b26cf

100 files changed, 239 insertions, 224 deletions

diff --git a/gtk2_ardour/ardour_ui.cc b/gtk2_ardour/ardour_ui.cc
index a5dafd6757..1130177fe2 100644
--- a/gtk2_ardour/ardour_ui.cc
+++ b/gtk2_ardour/ardour_ui.cc
@@ -3796,7 +3796,7 @@ ARDOUR_UI::missing_file (Session*s, std::string str, DataType type)
 }
 
 int
-ARDOUR_UI::ambiguous_file (std::string file, std::string path, std::vector<std::string> hits)
+ARDOUR_UI::ambiguous_file (std::string file, std::string /*path*/, std::vector<std::string> hits)
 {
 	AmbiguousFileDialog dialog (file, hits);
 
diff --git a/gtk2_ardour/ardour_ui.h b/gtk2_ardour/ardour_ui.h
index b288961d71..08e0d42ab0 100644
--- a/gtk2_ardour/ardour_ui.h
+++ b/gtk2_ardour/ardour_ui.h
@@ -707,10 +707,14 @@ class ARDOUR_UI : public Gtkmm2ext::UI, public ARDOUR::SessionHandlePtr
 
         void step_edit_status_change (bool);
 
+	void platform_specific ();
+	void platform_setup ();
+
 	/* these are used only in response to a platform-specific "ShouldQuit" signal
 	 */
 	bool idle_finish ();
 	void queue_finish ();
+	void fontconfig_dialog ();
 
 	std::list<WindowProxyBase*> _window_proxies;
 
diff --git a/gtk2_ardour/au_pluginui.mm b/gtk2_ardour/au_pluginui.mm
index 0f10af054d..256ceca7b0 100644
--- a/gtk2_ardour/au_pluginui.mm
+++ b/gtk2_ardour/au_pluginui.mm
@@ -131,7 +131,7 @@ AUPluginUI::AUPluginUI (boost::shared_ptr<PluginInsert> insert)
 
 	smaller_hbox->set_spacing (6);
 	smaller_hbox->pack_start (preset_label, false, false, 4);
-	smaller_hbox->pack_start (preset_combo, false, false);
+	smaller_hbox->pack_start (_preset_combo, false, false);
 	smaller_hbox->pack_start (save_button, false, false);
 #if 0
 	/* one day these might be useful with an AU plugin, but not yet */
@@ -158,7 +158,7 @@ AUPluginUI::AUPluginUI (boost::shared_ptr<PluginInsert> insert)
 	pack_start (low_box, false, false);
 
 	preset_label.show ();
-	preset_combo.show ();
+	_preset_combo.show ();
 	automation_mode_label.show ();
 	automation_mode_selector.show ();
 	bypass_button.show ();
@@ -276,7 +276,7 @@ AUPluginUI::create_cocoa_view ()
 	UInt32     dataSize;
 	Boolean    isWritable;
 	NSString*	    factoryClassName = 0;
-	NSURL*	            CocoaViewBundlePath;
+	NSURL*	            CocoaViewBundlePath = NULL;
 
 	OSStatus result = AudioUnitGetPropertyInfo (*au->get_au(),
 						    kAudioUnitProperty_CocoaUI,
diff --git a/gtk2_ardour/audio_clock.cc b/gtk2_ardour/audio_clock.cc
index 3adb17ab84..aff72fbf6e 100644
--- a/gtk2_ardour/audio_clock.cc
+++ b/gtk2_ardour/audio_clock.cc
@@ -1006,7 +1006,7 @@ AudioClock::button_press (GdkEventButton *ev, CairoCell* cell)
 }
 
 bool
-AudioClock::button_release (GdkEventButton *ev, CairoCell* cell)
+AudioClock::button_release (GdkEventButton *ev, CairoCell*)
 {
 	if (editable) {
 		if (dragging) {
diff --git a/gtk2_ardour/audio_region_editor.cc b/gtk2_ardour/audio_region_editor.cc
index b0767604c9..e06e50f113 100644
--- a/gtk2_ardour/audio_region_editor.cc
+++ b/gtk2_ardour/audio_region_editor.cc
@@ -96,10 +96,9 @@ AudioRegionEditor::AudioRegionEditor (Session* s, boost::shared_ptr<AudioRegion>
 
 AudioRegionEditor::~AudioRegionEditor ()
 {
-	pthread_cancel_one (_peak_amplitude_thread_handle);
 	void* v;
-	int const r = pthread_join (_peak_amplitude_thread_handle, &v);
-	assert (r == 0);
+	pthread_cancel_one (_peak_amplitude_thread_handle);
+	pthread_join (_peak_amplitude_thread_handle, &v);
 }
 
 void
diff --git a/gtk2_ardour/automation_time_axis.cc b/gtk2_ardour/automation_time_axis.cc
index e4daf6e74c..4ba09120ad 100644
--- a/gtk2_ardour/automation_time_axis.cc
+++ b/gtk2_ardour/automation_time_axis.cc
@@ -955,7 +955,7 @@ AutomationTimeAxisView::set_state_2X (const XMLNode& node, int /*version*/)
 }
 
 int
-AutomationTimeAxisView::set_state (const XMLNode& node, int /*version*/)
+AutomationTimeAxisView::set_state (const XMLNode&, int /*version*/)
 {
 	return 0;
 }
diff --git a/gtk2_ardour/canvas-simpleline.c b/gtk2_ardour/canvas-simpleline.c
index 887f71b411..39a1901f57 100644
--- a/gtk2_ardour/canvas-simpleline.c
+++ b/gtk2_ardour/canvas-simpleline.c
@@ -389,7 +389,7 @@ gnome_canvas_simpleline_render (GnomeCanvasItem *item,
 }
 
 static void
-gnome_canvas_simpleline_draw (GnomeCanvasItem *item,
+gnome_canvas_simpleline_draw (GnomeCanvasItem *canvas,
                               GdkDrawable *drawable,
                               int x, int y,
                               int width, int height)
@@ -414,7 +414,6 @@ gnome_canvas_simpleline_point (GnomeCanvasItem *item, double x, double y, int cx
 	(void) cx;
 	(void) cy;
 
-	GnomeCanvasSimpleLine *simpleline;
 	double x1, y1, x2, y2;
 	double dx, dy;
 
diff --git a/gtk2_ardour/editor_canvas.cc b/gtk2_ardour/editor_canvas.cc
index 1677baa001..da928a6d9e 100644
--- a/gtk2_ardour/editor_canvas.cc
+++ b/gtk2_ardour/editor_canvas.cc
@@ -890,7 +890,7 @@ Editor::set_canvas_cursor (Gdk::Cursor* cursor, bool save)
 }
 
 bool
-Editor::track_canvas_key_press (GdkEventKey* event)
+Editor::track_canvas_key_press (GdkEventKey*)
 {
 	/* XXX: event does not report the modifier key pressed down, AFAICS, so use the Keyboard object instead */
 	if (mouse_mode == Editing::MouseZoom && Keyboard::the_keyboard().key_is_down (GDK_Control_L)) {
@@ -901,7 +901,7 @@ Editor::track_canvas_key_press (GdkEventKey* event)
 }
 
 bool
-Editor::track_canvas_key_release (GdkEventKey* event)
+Editor::track_canvas_key_release (GdkEventKey*)
 {
 	if (mouse_mode == Editing::MouseZoom && !Keyboard::the_keyboard().key_is_down (GDK_Control_L)) {
 		set_canvas_cursor (_cursors->zoom_in, true);
diff --git a/gtk2_ardour/editor_canvas_events.cc b/gtk2_ardour/editor_canvas_events.cc
index 014c925f7d..07ae84031f 100644
--- a/gtk2_ardour/editor_canvas_events.cc
+++ b/gtk2_ardour/editor_canvas_events.cc
@@ -1084,7 +1084,7 @@ Editor::track_canvas_drag_motion (Glib::RefPtr<Gdk::DragContext> const & /*c*/,
 }
 
 bool
-Editor::key_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType type)
+Editor::key_press_handler (ArdourCanvas::Item*, GdkEvent*, ItemType)
 {
 	return false;
 }
diff --git a/gtk2_ardour/editor_drag.cc b/gtk2_ardour/editor_drag.cc
index 34e7750963..04dedf97ad 100644
--- a/gtk2_ardour/editor_drag.cc
+++ b/gtk2_ardour/editor_drag.cc
@@ -2736,7 +2736,7 @@ MarkerDrag::aborted (bool)
 }
 
 void
-MarkerDrag::update_item (Location* location)
+MarkerDrag::update_item (Location*)
 {
         /* noop */
 }
diff --git a/gtk2_ardour/editor_mouse.cc b/gtk2_ardour/editor_mouse.cc
index 9df6de3a8e..21f2214a7c 100644
--- a/gtk2_ardour/editor_mouse.cc
+++ b/gtk2_ardour/editor_mouse.cc
@@ -1806,7 +1806,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
 }
 
 bool
-Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_type)
+Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent*, ItemType item_type)
 {
 	AutomationLine* al;
 	ControlPoint* cp;
@@ -2417,7 +2417,7 @@ Editor::track_height_step_timeout ()
 }
 
 void
-Editor::add_region_drag (ArdourCanvas::Item* item, GdkEvent* event, RegionView* region_view)
+Editor::add_region_drag (ArdourCanvas::Item* item, GdkEvent*, RegionView* region_view)
 {
 	assert (region_view);
 
@@ -2439,7 +2439,7 @@ Editor::add_region_drag (ArdourCanvas::Item* item, GdkEvent* event, RegionView*
 }
 
 void
-Editor::add_region_copy_drag (ArdourCanvas::Item* item, GdkEvent* event, RegionView* region_view)
+Editor::add_region_copy_drag (ArdourCanvas::Item* item, GdkEvent*, RegionView* region_view)
 {
 	assert (region_view);
 
@@ -2454,7 +2454,7 @@ Editor::add_region_copy_drag (ArdourCanvas::Item* item, GdkEvent* event, RegionV
 }
 
 void
-Editor::add_region_brush_drag (ArdourCanvas::Item* item, GdkEvent* event, RegionView* region_view)
+Editor::add_region_brush_drag (ArdourCanvas::Item* item, GdkEvent*, RegionView* region_view)
 {
 	assert (region_view);
 
@@ -2584,7 +2584,7 @@ Editor::set_internal_edit (bool yn)
  *  used by the `join object/range' tool mode.
  */
 void
-Editor::update_join_object_range_location (double x, double y)
+Editor::update_join_object_range_location (double /*x*/, double y)
 {
 	/* XXX: actually, this decides based on whether the mouse is in the top or bottom half of a RouteTimeAxisView;
 	   entered_{track,regionview} is not always setup (e.g. if the mouse is over a TimeSelection), and to get a Region
diff --git a/gtk2_ardour/editor_ops.cc b/gtk2_ardour/editor_ops.cc
index b19dd6af77..554fffa69c 100644
--- a/gtk2_ardour/editor_ops.cc
+++ b/gtk2_ardour/editor_ops.cc
@@ -5006,7 +5006,7 @@ void
 Editor::toggle_region_fades (int dir)
 {
 	boost::shared_ptr<AudioRegion> ar;
-	bool yn;
+	bool yn = false;
 
 	RegionSelection rs = get_regions_from_selection_and_entered ();
 
diff --git a/gtk2_ardour/editor_regions.cc b/gtk2_ardour/editor_regions.cc
index 154af6c977..c6c8f1e914 100644
--- a/gtk2_ardour/editor_regions.cc
+++ b/gtk2_ardour/editor_regions.cc
@@ -214,7 +214,7 @@ EditorRegions::focus_out (GdkEventFocus*)
 }
 
 bool
-EditorRegions::enter_notify (GdkEventCrossing* ev)
+EditorRegions::enter_notify (GdkEventCrossing*)
 {
 	if (name_editable) {
 		return true;
@@ -743,7 +743,7 @@ EditorRegions::populate_row (boost::shared_ptr<Region> region, TreeModel::Row co
 #endif
 
 void
-EditorRegions::populate_row_used (boost::shared_ptr<Region> region, TreeModel::Row const& row, uint32_t used)
+EditorRegions::populate_row_used (boost::shared_ptr<Region>, TreeModel::Row const& row, uint32_t used)
 {
 	char buf[8];
 	snprintf (buf, sizeof (buf), "%4d" , used);
diff --git a/gtk2_ardour/editor_rulers.cc b/gtk2_ardour/editor_rulers.cc
index 1c077e8552..b7a3f2ba5f 100644
--- a/gtk2_ardour/editor_rulers.cc
+++ b/gtk2_ardour/editor_rulers.cc
@@ -1746,7 +1746,7 @@ Editor::set_samples_ruler_scale (framepos_t lower, framepos_t upper)
 }
 
 gint
-Editor::metric_get_samples (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint /*maxchars*/)
+Editor::metric_get_samples (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upper*/, gint /*maxchars*/)
 {
 	framepos_t pos;
 	framepos_t const ilower = (framepos_t) floor (lower);
diff --git a/gtk2_ardour/editor_selection.cc b/gtk2_ardour/editor_selection.cc
index c2338347d2..b108659981 100644
--- a/gtk2_ardour/editor_selection.cc
+++ b/gtk2_ardour/editor_selection.cc
@@ -1230,7 +1230,7 @@ Editor::select_all_in_track (Selection::Operation op)
 }
 
 void
-Editor::select_all_internal_edit (Selection::Operation op)
+Editor::select_all_internal_edit (Selection::Operation)
 {
         /* currently limited to MIDI only */
 
diff --git a/gtk2_ardour/gain_meter.cc b/gtk2_ardour/gain_meter.cc
index 471239efdc..79f5d4b421 100644
--- a/gtk2_ardour/gain_meter.cc
+++ b/gtk2_ardour/gain_meter.cc
@@ -634,7 +634,7 @@ GainMeterBase::gain_slider_button_press (GdkEventButton* ev)
 }
 
 bool
-GainMeterBase::gain_slider_button_release (GdkEventButton* ev)
+GainMeterBase::gain_slider_button_release (GdkEventButton*)
 {
 	_amp->gain_control()->stop_touch (false, _amp->session().transport_frame());
 	return true;
diff --git a/gtk2_ardour/group_tabs.cc b/gtk2_ardour/group_tabs.cc
index e2f8e9905a..5c713f1352 100644
--- a/gtk2_ardour/group_tabs.cc
+++ b/gtk2_ardour/group_tabs.cc
@@ -603,7 +603,7 @@ GroupTabs::route_group_property_changed (RouteGroup* rg)
 }
 
 void
-GroupTabs::route_added_to_route_group (RouteGroup* rg, boost::weak_ptr<Route> w)
+GroupTabs::route_added_to_route_group (RouteGroup*, boost::weak_ptr<Route> w)
 {
 	/* Similarly-spirited hack as in route_group_property_changed */
 	
@@ -616,7 +616,7 @@ GroupTabs::route_added_to_route_group (RouteGroup* rg, boost::weak_ptr<Route> w)
 }
 
 void
-GroupTabs::route_removed_from_route_group (RouteGroup* rg, boost::weak_ptr<Route> w)
+GroupTabs::route_removed_from_route_group (RouteGroup*, boost::weak_ptr<Route> w)
 {
 	/* Similarly-spirited hack as in route_group_property_changed */
 
diff --git a/gtk2_ardour/gtk_pianokeyboard.c b/gtk2_ardour/gtk_pianokeyboard.c
index 90405a6c31..7332299bfb 100644
--- a/gtk2_ardour/gtk_pianokeyboard.c
+++ b/gtk2_ardour/gtk_pianokeyboard.c
@@ -352,7 +352,7 @@ bind_keys_azerty(PianoKeyboard *pk)
 }
 
 static gint
-keyboard_event_handler(GtkWidget *mk, GdkEventKey *event, gpointer notused)
+keyboard_event_handler(GtkWidget *mk, GdkEventKey *event, gpointer ignored)
 {
 	int		note;
 	char		*key;
@@ -433,7 +433,7 @@ get_note_for_xy(PianoKeyboard *pk, int x, int y)
 }
 
 static gboolean
-mouse_button_event_handler(PianoKeyboard *pk, GdkEventButton *event, gpointer notused)
+mouse_button_event_handler(PianoKeyboard *pk, GdkEventButton *event, gpointer ignored)
 {
 	int		x = event->x;
 	int		y = event->y;
@@ -473,7 +473,7 @@ mouse_button_event_handler(PianoKeyboard *pk, GdkEventButton *event, gpointer no
 }
 
 static gboolean
-mouse_motion_event_handler(PianoKeyboard *pk, GdkEventMotion *event, gpointer notused)
+mouse_motion_event_handler(PianoKeyboard *pk, GdkEventMotion *event, gpointer ignored)
 {
 	int		note;
 
diff --git a/gtk2_ardour/location_ui.cc b/gtk2_ardour/location_ui.cc
index c0f5d1f325..004bf9e765 100644
--- a/gtk2_ardour/location_ui.cc
+++ b/gtk2_ardour/location_ui.cc
@@ -593,7 +593,7 @@ LocationEditRow::preemph_toggled ()
 }
 
 void
-LocationEditRow::end_changed (ARDOUR::Location *loc)
+LocationEditRow::end_changed (ARDOUR::Location *)
 {
 	ENSURE_GUI_THREAD (*this, &LocationEditRow::end_changed, loc)
 
diff --git a/gtk2_ardour/midi_region_view.cc b/gtk2_ardour/midi_region_view.cc
index 69f6b87442..b79d97d746 100644
--- a/gtk2_ardour/midi_region_view.cc
+++ b/gtk2_ardour/midi_region_view.cc
@@ -388,7 +388,7 @@ MidiRegionView::enter_notify (GdkEventCrossing* ev)
 }
 
 bool
-MidiRegionView::leave_notify (GdkEventCrossing* ev)
+MidiRegionView::leave_notify (GdkEventCrossing*)
 {
 	_mouse_mode_connection.disconnect ();
 
@@ -850,7 +850,7 @@ void
 MidiRegionView::channel_edit ()
 {
 	bool first = true;
-	uint8_t current_channel;
+	uint8_t current_channel = 0;
 
 	if (_selection.empty()) {
 		return;
diff --git a/gtk2_ardour/mixer_strip.cc b/gtk2_ardour/mixer_strip.cc
index 7012ad61f5..15550f4cd4 100644
--- a/gtk2_ardour/mixer_strip.cc
+++ b/gtk2_ardour/mixer_strip.cc
@@ -1880,7 +1880,7 @@ MixerStrip::hide_things ()
 }
 
 bool
-MixerStrip::input_active_button_press (GdkEventButton* ev)
+MixerStrip::input_active_button_press (GdkEventButton*)
 {
 	/* nothing happens on press */
 	return true;
diff --git a/gtk2_ardour/monitor_section.cc b/gtk2_ardour/monitor_section.cc
index de6685fade..1bdd27dc6d 100644
--- a/gtk2_ardour/monitor_section.cc
+++ b/gtk2_ardour/monitor_section.cc
@@ -762,7 +762,7 @@ MonitorSection::setup_knob_images ()
 void
 MonitorSection::update_solo_model ()
 {
-        const char* action_name;
+        const char* action_name = 0;
         Glib::RefPtr<Action> act;
 
         if (Config->get_solo_control_is_listen_control()) {
diff --git a/gtk2_ardour/mono_panner.cc b/gtk2_ardour/mono_panner.cc
index 78fec4e679..43afcd5c84 100644
--- a/gtk2_ardour/mono_panner.cc
+++ b/gtk2_ardour/mono_panner.cc
@@ -121,7 +121,7 @@ MonoPanner::value_change ()
 }
 
 bool
-MonoPanner::on_expose_event (GdkEventExpose* ev)
+MonoPanner::on_expose_event (GdkEventExpose*)
 {
 	Glib::RefPtr<Gdk::Window> win (get_window());
 	Glib::RefPtr<Gdk::GC> gc (get_style()->get_base_gc (get_state()));
@@ -469,13 +469,13 @@ MonoPanner::on_key_press_event (GdkEventKey* ev)
 }
 
 bool
-MonoPanner::on_key_release_event (GdkEventKey* ev)
+MonoPanner::on_key_release_event (GdkEventKey*)
 {
         return false;
 }
 
 bool
-MonoPanner::on_enter_notify_event (GdkEventCrossing* ev)
+MonoPanner::on_enter_notify_event (GdkEventCrossing*)
 {
 	grab_focus ();
 	Keyboard::magic_widget_grab_focus ();
diff --git a/gtk2_ardour/panner2d.cc b/gtk2_ardour/panner2d.cc
index d61471d19e..ffe9a15954 100644
--- a/gtk2_ardour/panner2d.cc
+++ b/gtk2_ardour/panner2d.cc
@@ -853,7 +853,7 @@ Panner2dWindow::on_key_press_event (GdkEventKey* event)
 }
 
 bool
-Panner2dWindow::on_key_release_event (GdkEventKey *event)
+Panner2dWindow::on_key_release_event (GdkEventKey*)
 {
         return true;
 }
diff --git a/gtk2_ardour/region_view.cc b/gtk2_ardour/region_view.cc
index 534c7ef0d6..f213bb89ea 100644
--- a/gtk2_ardour/region_view.cc
+++ b/gtk2_ardour/region_view.cc
@@ -224,7 +224,7 @@ RegionView::~RegionView ()
 }
 
 void
-RegionView::set_silent_frames (const AudioIntervalResult& silences, double threshold)
+RegionView::set_silent_frames (const AudioIntervalResult& silences, double /*threshold*/)
 {
         framecnt_t shortest = max_framecnt;
 
diff --git a/gtk2_ardour/route_time_axis.cc b/gtk2_ardour/route_time_axis.cc
index 81b50f04b6..17c0874641 100644
--- a/gtk2_ardour/route_time_axis.cc
+++ b/gtk2_ardour/route_time_axis.cc
@@ -1875,7 +1875,7 @@ RouteTimeAxisView::add_processor_automation_curve (boost::shared_ptr<Processor>
 }
 
 void
-RouteTimeAxisView::processor_automation_track_hidden (RouteTimeAxisView::ProcessorAutomationNode* pan, boost::shared_ptr<Processor> i)
+RouteTimeAxisView::processor_automation_track_hidden (RouteTimeAxisView::ProcessorAutomationNode* pan, boost::shared_ptr<Processor>)
 {
 	if (!_hidden) {
 		pan->menu_item->set_active (false);
@@ -2281,7 +2281,7 @@ RouteTimeAxisView::set_underlay_state()
 }
 
 void
-RouteTimeAxisView::add_underlay (StreamView* v, bool update_xml)
+RouteTimeAxisView::add_underlay (StreamView* v, bool /*update_xml*/)
 {
 	if (!v) {
 		return;
diff --git a/gtk2_ardour/shuttle_control.cc b/gtk2_ardour/shuttle_control.cc
index dd7cd753e6..a496ddc0b2 100644
--- a/gtk2_ardour/shuttle_control.cc
+++ b/gtk2_ardour/shuttle_control.cc
@@ -483,7 +483,7 @@ ShuttleControl::use_shuttle_fract (bool force)
 }
 
 bool
-ShuttleControl::on_expose_event (GdkEventExpose* event)
+ShuttleControl::on_expose_event (GdkEventExpose*)
 {
 	cairo_text_extents_t extents;
 	Glib::RefPtr<Gdk::Window> win (get_window());
diff --git a/gtk2_ardour/stereo_panner.cc b/gtk2_ardour/stereo_panner.cc
index 7fe204fbfd..690acbfdda 100644
--- a/gtk2_ardour/stereo_panner.cc
+++ b/gtk2_ardour/stereo_panner.cc
@@ -619,13 +619,13 @@ StereoPanner::on_key_press_event (GdkEventKey* ev)
 }
 
 bool
-StereoPanner::on_key_release_event (GdkEventKey* ev)
+StereoPanner::on_key_release_event (GdkEventKey*)
 {
 	return false;
 }
 
 bool
-StereoPanner::on_enter_notify_event (GdkEventCrossing* ev)
+StereoPanner::on_enter_notify_event (GdkEventCrossing*)
 {
 	grab_focus ();
 	Keyboard::magic_widget_grab_focus ();
diff --git a/gtk2_ardour/time_axis_view.cc b/gtk2_ardour/time_axis_view.cc
index 14cbecd808..4ed057add9 100644
--- a/gtk2_ardour/time_axis_view.cc
+++ b/gtk2_ardour/time_axis_view.cc
@@ -397,7 +397,7 @@ TimeAxisView::controls_ebox_motion (GdkEventMotion* ev)
 }
 
 bool
-TimeAxisView::controls_ebox_leave (GdkEventCrossing* ev)
+TimeAxisView::controls_ebox_leave (GdkEventCrossing*)
 {
 	if (_have_preresize_cursor) {
 		gdk_window_set_cursor (controls_ebox.get_window()->gobj(), _preresize_cursor);
diff --git a/gtk2_ardour/time_axis_view_item.cc b/gtk2_ardour/time_axis_view_item.cc
index ce2e6c1485..d9b0bfa2cf 100644
--- a/gtk2_ardour/time_axis_view_item.cc
+++ b/gtk2_ardour/time_axis_view_item.cc
@@ -109,7 +109,7 @@ TimeAxisViewItem::TimeAxisViewItem(
 }
 
 TimeAxisViewItem::TimeAxisViewItem (const TimeAxisViewItem& other)
-	: sigc::trackable(other)
+	: Selectable (other)
 	, PBD::ScopedConnectionList()
 	, trackview (other.trackview)
 	, _recregion (other._recregion)
diff --git a/libs/appleutility/CAAudioChannelLayout.h b/libs/appleutility/CAAudioChannelLayout.h
index 796f197c3b..5c351c29b5 100644
--- a/libs/appleutility/CAAudioChannelLayout.h
+++ b/libs/appleutility/CAAudioChannelLayout.h
@@ -150,7 +150,7 @@ private:
 	
 	private:
 		ACLRefCounter () : mLayout(NULL) { }
-		ACLRefCounter(const ACLRefCounter&) : mLayout(NULL) { }
+		ACLRefCounter(const ACLRefCounter& other) : CAReferenceCounted (other), mLayout(NULL) { }
 		ACLRefCounter& operator=(const ACLRefCounter&) { return *this; }
 	};
 	
diff --git a/libs/appleutility/CAAudioUnit.cpp b/libs/appleutility/CAAudioUnit.cpp
index aaf57f233d..131969b66c 100644
--- a/libs/appleutility/CAAudioUnit.cpp
+++ b/libs/appleutility/CAAudioUnit.cpp
@@ -191,7 +191,7 @@ private:
 private:
 		// get the compiler to tell us when we do a bad thing!!!
 	AUState () {}
-	AUState (const AUState&) {}
+        AUState (const AUState& other) : CAReferenceCounted (other) {}
 	AUState& operator= (const AUState&) { return *this; } 
 };						
 						
@@ -1084,13 +1084,13 @@ bool		CAAudioUnit::HasCustomView () const
 OSStatus		CAAudioUnit::GetParameter(AudioUnitParameterID inID, AudioUnitScope scope, AudioUnitElement element,
 											Float32 &outValue) const
 {
-	return mDataPtr ? mDataPtr->GetParameter (inID, scope, element, outValue) : paramErr;
+	return mDataPtr ? (OSStatus) mDataPtr->GetParameter (inID, scope, element, outValue) : paramErr;
 }
 
 OSStatus		CAAudioUnit::SetParameter(AudioUnitParameterID inID, AudioUnitScope scope, AudioUnitElement element,
 											Float32 value, UInt32 bufferOffsetFrames)
 {
-	return mDataPtr ? mDataPtr->SetParameter (inID, scope, element, value, bufferOffsetFrames) : paramErr;
+	return mDataPtr ? (OSStatus) mDataPtr->SetParameter (inID, scope, element, value, bufferOffsetFrames) : paramErr;
 }
 
 OSStatus		CAAudioUnit::MIDIEvent (UInt32			inStatus,
@@ -1098,7 +1098,7 @@ OSStatus		CAAudioUnit::MIDIEvent (UInt32			inStatus,
 								UInt32					inData2,
 								UInt32					inOffsetSampleFrame)
 {
-	return mDataPtr ? mDataPtr->MIDIEvent (inStatus, inData1, inData2, inOffsetSampleFrame) : paramErr;
+	return mDataPtr ? (OSStatus) mDataPtr->MIDIEvent (inStatus, inData1, inData2, inOffsetSampleFrame) : paramErr;
 }
 
 OSStatus	CAAudioUnit::StartNote (MusicDeviceInstrumentID		inInstrument,
@@ -1107,15 +1107,15 @@ OSStatus	CAAudioUnit::StartNote (MusicDeviceInstrumentID		inInstrument,
 									UInt32						inOffsetSampleFrame,
 									const MusicDeviceNoteParams * inParams)
 {
-	return mDataPtr ? mDataPtr->StartNote (inInstrument, inGroupID, outNoteInstanceID, inOffsetSampleFrame, inParams) 
-					: paramErr;
+	return mDataPtr ? (OSStatus) mDataPtr->StartNote (inInstrument, inGroupID, outNoteInstanceID, inOffsetSampleFrame, inParams) 
+		: paramErr;
 }
 
 OSStatus	CAAudioUnit::StopNote (MusicDeviceGroupID		inGroupID,
 									NoteInstanceID				inNoteInstanceID,
 									UInt32						inOffsetSampleFrame)
 {
-	return mDataPtr ? mDataPtr->StopNote (inGroupID, inNoteInstanceID, inOffsetSampleFrame) : paramErr;
+	return mDataPtr ? (OSStatus) mDataPtr->StopNote (inGroupID, inNoteInstanceID, inOffsetSampleFrame) : paramErr;
 }
 
 #pragma mark __Render
@@ -1126,7 +1126,7 @@ OSStatus		CAAudioUnit::Render (AudioUnitRenderActionFlags 			* ioActionFlags,
 												UInt32						inNumberFrames,
 												AudioBufferList				* ioData)
 {
-	return mDataPtr ? mDataPtr->Render (ioActionFlags, inTimeStamp, inOutputBusNumber, inNumberFrames, ioData) : paramErr;
+	return mDataPtr ? (OSStatus) mDataPtr->Render (ioActionFlags, inTimeStamp, inOutputBusNumber, inNumberFrames, ioData) : paramErr;
 }
 
 static AURenderCallbackStruct sRenderCallback;
diff --git a/libs/appleutility/CAReferenceCounted.h b/libs/appleutility/CAReferenceCounted.h
index fc18dc8ca4..a9c8dccca3 100644
--- a/libs/appleutility/CAReferenceCounted.h
+++ b/libs/appleutility/CAReferenceCounted.h
@@ -70,12 +70,12 @@ public:
 			}
 
 protected:
-    virtual	~CAReferenceCounted() { }
-	
+	virtual	~CAReferenceCounted() { }
+	CAReferenceCounted(const CAReferenceCounted &) : mRefCount(0) { }
+
 private:
 	SInt32		mRefCount;
 
-	CAReferenceCounted(const CAReferenceCounted &) : mRefCount(0) { }
 	CAReferenceCounted operator=(const CAReferenceCounted &) { return *this; }
 };
 
diff --git a/libs/ardour/ardour/audio_unit.h b/libs/ardour/ardour/audio_unit.h
index f36e89073b..0a786d5462 100644
--- a/libs/ardour/ardour/audio_unit.h
+++ b/libs/ardour/ardour/audio_unit.h
@@ -97,7 +97,6 @@ class AUPlugin : public ARDOUR::Plugin
 
 	int set_state(const XMLNode& node, int);
 
-	PresetRecord save_preset (std::string name);
 	bool load_preset (PresetRecord);
 	std::string current_preset() const;
 
@@ -140,6 +139,10 @@ class AUPlugin : public ARDOUR::Plugin
 
 	static std::string maybe_fix_broken_au_id (const std::string&);
 
+  protected:
+	std::string do_save_preset (std::string name);
+	void do_remove_preset (std::string);
+
   private:
 	void find_presets ();
 
diff --git a/libs/ardour/ardour/audiosource.h b/libs/ardour/ardour/audiosource.h
index 67d5ddce3a..c9eb3bfc45 100644
--- a/libs/ardour/ardour/audiosource.h
+++ b/libs/ardour/ardour/audiosource.h
@@ -145,7 +145,7 @@ class AudioSource : virtual public Source,
 	virtual framecnt_t read_unlocked (Sample *dst, framepos_t start, framecnt_t cnt) const = 0;
 	virtual framecnt_t write_unlocked (Sample *dst, framecnt_t cnt) = 0;
 	virtual std::string peak_path(std::string audio_path) = 0;
-	virtual std::string find_broken_peakfile (std::string missing_peak_path,
+	virtual std::string find_broken_peakfile (std::string /* missing_peak_path */,
 	                                          std::string audio_path) { return peak_path (audio_path); }
 
 	virtual int read_peaks_with_fpp (PeakData *peaks,
diff --git a/libs/ardour/ardour/caimportable.h b/libs/ardour/ardour/caimportable.h
index 2e86ff2c90..1ed8676ee6 100644
--- a/libs/ardour/ardour/caimportable.h
+++ b/libs/ardour/ardour/caimportable.h
@@ -33,11 +33,11 @@ class CAImportableSource : public ImportableSource {
 	CAImportableSource (const std::string& path);
 	virtual ~CAImportableSource();
 
-	nframes_t read (Sample* buffer, nframes_t nframes);
+	framecnt_t read (Sample* buffer, framecnt_t nframes);
 	uint32_t  channels() const;
 	framecnt_t length() const;
-	nframes_t samplerate() const;
-	void      seek (nframes_t pos);
+	framecnt_t samplerate() const;
+	void      seek (framepos_t pos);
 	framepos_t natural_position() const { return 0; }
 	bool clamped_at_unity () const { return false; }
 
diff --git a/libs/ardour/ardour/coreaudiosource.h b/libs/ardour/ardour/coreaudiosource.h
index 2f283dfd36..820fa0b9d8 100644
--- a/libs/ardour/ardour/coreaudiosource.h
+++ b/libs/ardour/ardour/coreaudiosource.h
@@ -54,7 +54,7 @@ class CoreAudioSource : public AudioFileSource {
 	uint16_t n_channels;
 
 	void init_cafile ();
-	int safe_read (Sample*, nframes_t start, framecnt_t cnt, AudioBufferList&) const;
+	int safe_read (Sample*, framepos_t start, framecnt_t cnt, AudioBufferList&) const;
 };
 
 }; /* namespace ARDOUR */
diff --git a/libs/ardour/ardour/export_channel.h b/libs/ardour/ardour/export_channel.h
index 1a71f14c3c..a73d04aa36 100644
--- a/libs/ardour/ardour/export_channel.h
+++ b/libs/ardour/ardour/export_channel.h
@@ -47,7 +47,7 @@ class ExportChannel : public boost::less_than_comparable<ExportChannel>
 
 	virtual ~ExportChannel () {}
 
-	virtual void set_max_buffer_size(framecnt_t frames) { }
+	virtual void set_max_buffer_size(framecnt_t) { }
 
 	virtual void read (Sample const *& data, framecnt_t frames) const = 0;
 	virtual bool empty () const = 0;
diff --git a/libs/ardour/ardour/lxvst_plugin.h b/libs/ardour/ardour/lxvst_plugin.h
index 24793772ef..108437b6a3 100755
--- a/libs/ardour/ardour/lxvst_plugin.h
+++ b/libs/ardour/ardour/lxvst_plugin.h
@@ -73,10 +73,10 @@ class LXVSTPlugin : public ARDOUR::Plugin
 	std::string state_node_name() const { return "lxvst"; }
 	void print_parameter (uint32_t, char*, uint32_t len) const;
 
-	bool parameter_is_audio(uint32_t i) const { return false; }
-	bool parameter_is_control(uint32_t i) const { return true; }
-	bool parameter_is_input(uint32_t i) const { return true; }
-	bool parameter_is_output(uint32_t i) const { return false; }
+	bool parameter_is_audio(uint32_t) const { return false; }
+	bool parameter_is_control(uint32_t) const { return true; }
+	bool parameter_is_input(uint32_t) const { return true; }
+	bool parameter_is_output(uint32_t) const { return false; }
 
 	bool load_preset (PresetRecord);
 	int first_user_preset_index () const;
diff --git a/libs/ardour/ardour/plugin.h b/libs/ardour/ardour/plugin.h
index 2c819e96f2..fcd7d6d19b 100644
--- a/libs/ardour/ardour/plugin.h
+++ b/libs/ardour/ardour/plugin.h
@@ -136,8 +136,7 @@ class Plugin : public PBD::StatefulDestructible, public Latent
 
 	typedef std::map<const std::string, const float> ScalePoints;
 
-	virtual boost::shared_ptr<ScalePoints>
-	get_scale_points(uint32_t port_index) const {
+	virtual boost::shared_ptr<ScalePoints> get_scale_points(uint32_t /*port_index*/) const {
 		return boost::shared_ptr<ScalePoints>();
 	}
 
diff --git a/libs/ardour/audio_playlist_source.cc b/libs/ardour/audio_playlist_source.cc
index 79c0c12691..141a8495f9 100644
--- a/libs/ardour/audio_playlist_source.cc
+++ b/libs/ardour/audio_playlist_source.cc
@@ -171,7 +171,7 @@ AudioPlaylistSource::read_unlocked (Sample* dst, framepos_t start, framecnt_t cn
 }
 
 framecnt_t
-AudioPlaylistSource::write_unlocked (Sample *src, framecnt_t cnt)
+AudioPlaylistSource::write_unlocked (Sample *, framecnt_t)
 {
 	fatal << string_compose (_("programming error: %1"), "AudioPlaylistSource::write() called - should be impossible") << endmsg;
 	/*NOTREACHED*/
diff --git a/libs/ardour/audio_port.cc b/libs/ardour/audio_port.cc
index 556f6e0c2a..ae64d797c9 100644
--- a/libs/ardour/audio_port.cc
+++ b/libs/ardour/audio_port.cc
@@ -53,7 +53,7 @@ AudioPort::cycle_start (pframes_t nframes)
 }
 
 void
-AudioPort::cycle_end (pframes_t nframes)
+AudioPort::cycle_end (pframes_t)
 {
         if (sends_output() && !_buffer->written()) {
                 /* we can't use nframes here because the current buffer capacity may
diff --git a/libs/ardour/audio_unit.cc b/libs/ardour/audio_unit.cc
index a4d2dd241e..04efb2e50c 100644
--- a/libs/ardour/audio_unit.cc
+++ b/libs/ardour/audio_unit.cc
@@ -1341,7 +1341,7 @@ AUPlugin::get_beat_and_tempo_callback (Float64* outCurrentBeat,
 		float beat;
 		beat = metric.meter().beats_per_bar() * bbt.bars;
 		beat += bbt.beats;
-		beat += bbt.ticks / BBT_Time::ticks_per_beat;
+		beat += bbt.ticks / Timecode::BBT_Time::ticks_per_beat;
 		*outCurrentBeat = beat;
 	}
 
@@ -1381,8 +1381,9 @@ AUPlugin::get_musical_time_location_callback (UInt32*   outDeltaSampleOffsetToNe
 			/* on the beat */
 			*outDeltaSampleOffsetToNextBeat = 0;
 		} else {
-			*outDeltaSampleOffsetToNextBeat = (UInt32) floor (((BBT_Time::ticks_per_beat - bbt.ticks)/BBT_Time::ticks_per_beat) * // fraction of a beat to next beat
-									  metric.tempo().frames_per_beat(_session.frame_rate(), metric.meter())); // frames per beat
+			*outDeltaSampleOffsetToNextBeat = (UInt32) 
+				floor (((Timecode::BBT_Time::ticks_per_beat - bbt.ticks)/Timecode::BBT_Time::ticks_per_beat) * // fraction of a beat to next beat
+				       metric.tempo().frames_per_beat(_session.frame_rate(), metric.meter())); // frames per beat
 		}
 	}
 
@@ -1473,7 +1474,7 @@ AUPlugin::get_transport_state_callback (Boolean*  outIsPlaying,
 					float beat;
 					beat = metric.meter().beats_per_bar() * bbt.bars;
 					beat += bbt.beats;
-					beat += bbt.ticks / BBT_Time::ticks_per_beat;
+					beat += bbt.ticks / Timecode::BBT_Time::ticks_per_beat;
 
 					*outCycleStartBeat = beat;
 				}
@@ -1485,7 +1486,7 @@ AUPlugin::get_transport_state_callback (Boolean*  outIsPlaying,
 					float beat;
 					beat = metric.meter().beats_per_bar() * bbt.bars;
 					beat += bbt.beats;
-					beat += bbt.ticks / BBT_Time::ticks_per_beat;
+					beat += bbt.ticks / Timecode::BBT_Time::ticks_per_beat;
 
 					*outCycleEndBeat = beat;
 				}
@@ -1554,7 +1555,7 @@ AUPlugin::parameter_is_output (uint32_t) const
 }
 
 void
-AUPlugin::add_state (XMLNode* root)
+AUPlugin::add_state (XMLNode* root) const
 {
 	LocaleGuard lg (X_("POSIX"));
 
@@ -1573,7 +1574,7 @@ AUPlugin::add_state (XMLNode* root)
 
 	if (!xmlData) {
 		error << _("Could not create XML version of property list") << endmsg;
-		return *root;
+		return;
 	}
 
 	/* re-parse XML bytes to create a libxml++ XMLTree that we can merge into
@@ -1662,7 +1663,7 @@ AUPlugin::set_state(const XMLNode& node, int version)
 }
 
 bool
-AUPlugin::load_preset (PluginRecord r)
+AUPlugin::load_preset (PresetRecord r)
 {
 	Plugin::load_preset (r);
 
@@ -1675,7 +1676,7 @@ AUPlugin::load_preset (PluginRecord r)
 
 	/* look first in "user" presets */
 
-	if ((ux = user_preset_map.find (preset_label)) != user_preset_map.end()) {
+	if ((ux = user_preset_map.find (r.label)) != user_preset_map.end()) {
 
 		if ((propertyList = load_property_list (ux->second)) != 0) {
 			TRACE_API ("set preset from user presets\n");
@@ -1692,7 +1693,7 @@ AUPlugin::load_preset (PluginRecord r)
 			CFRelease(propertyList);
 		}
 
-	} else if ((fx = factory_preset_map.find (preset_label)) != factory_preset_map.end()) {
+	} else if ((fx = factory_preset_map.find (r.label)) != factory_preset_map.end()) {
 
 		AUPreset preset;
 
@@ -1725,8 +1726,13 @@ AUPlugin::load_preset (PluginRecord r)
 #endif
 }
 
-PresetRecord
-AUPlugin::save_preset (string preset_name)
+void
+AUPlugin::do_remove_preset (std::string) 
+{
+}
+
+string
+AUPlugin::do_save_preset (string preset_name)
 {
 #ifdef AU_STATE_SUPPORT
 	CFPropertyListRef propertyList;
@@ -1776,7 +1782,7 @@ AUPlugin::save_preset (string preset_name)
 
 	CFRelease(propertyList);
 
-	return ret;
+	return string ("file:///") + user_preset_path;
 #else
 	if (!seen_saving_message) {
 		info << string_compose (_("Saving AudioUnit presets is not supported in this build of %1. Consider paying for a newer version"),
@@ -1784,7 +1790,7 @@ AUPlugin::save_preset (string preset_name)
 		     << endmsg;
 		seen_saving_message = true;
 	}
-	return false;
+	return string();
 #endif
 }
 
@@ -2006,7 +2012,7 @@ AUPlugin::find_presets ()
 	/* now fill the vector<string> with the names we have */
 
 	for (UserPresetMap::iterator i = user_preset_map.begin(); i != user_preset_map.end(); ++i) {
-		_presets.insert (i->second, Plugin::PresetRecord (i->second, i->first));
+		_presets.insert (make_pair (i->second, Plugin::PresetRecord (i->second, i->first)));
 	}
 
 	/* add factory presets */
@@ -2014,7 +2020,7 @@ AUPlugin::find_presets ()
 	for (FactoryPresetMap::iterator i = factory_preset_map.begin(); i != factory_preset_map.end(); ++i) {
 		/* XXX: dubious */
 		string const uri = string_compose ("%1", _presets.size ());
-		_presets.push_back (uri, Plugin::PresetRecord (uri, i->first));
+		_presets.insert (make_pair (uri, Plugin::PresetRecord (uri, i->first)));
 	}
 
 #endif
@@ -2082,10 +2088,12 @@ AUPluginInfo::discover ()
 
 	PluginInfoList* plugs = new PluginInfoList;
 
+#if 0
 	discover_fx (*plugs);
 	discover_music (*plugs);
 	discover_generators (*plugs);
 	discover_instruments (*plugs);
+#endif
 
 	return plugs;
 }
diff --git a/libs/ardour/export_channel.cc b/libs/ardour/export_channel.cc
index 785648393e..4593c4de9f 100644
--- a/libs/ardour/export_channel.cc
+++ b/libs/ardour/export_channel.cc
@@ -241,13 +241,13 @@ RouteExportChannel::read (Sample const *& data, framecnt_t frames) const
 }
 
 void
-RouteExportChannel::get_state (XMLNode * node) const
+RouteExportChannel::get_state (XMLNode *) const
 {
 	// TODO
 }
 
 void
-RouteExportChannel::set_state (XMLNode * node, Session & session)
+RouteExportChannel::set_state (XMLNode *, Session &)
 {
 	// TODO
 }
diff --git a/libs/ardour/file_source.cc b/libs/ardour/file_source.cc
index 877a0a4939..e35ee81364 100644
--- a/libs/ardour/file_source.cc
+++ b/libs/ardour/file_source.cc
@@ -235,7 +235,7 @@ FileSource::move_to_trash (const string& trash_dir_name)
  */
 bool
 FileSource::find (Session& s, DataType type, const string& path, bool must_exist,
-		  bool& isnew, uint16_t& chan, string& found_path)
+		  bool& isnew, uint16_t& /* chan */, string& found_path)
 {
 	bool ret = false;
         string keeppath;
diff --git a/libs/ardour/ladspa_plugin.cc b/libs/ardour/ladspa_plugin.cc
index 1fc8b2f1a0..ef1a6b6682 100644
--- a/libs/ardour/ladspa_plugin.cc
+++ b/libs/ardour/ladspa_plugin.cc
@@ -761,7 +761,7 @@ LadspaPlugin::load_preset (PresetRecord r)
 
 /* XXX: should be in liblrdf */
 static void
-lrdf_remove_preset (const char *source, const char *setting_uri)
+lrdf_remove_preset (const char* /*source*/, const char *setting_uri)
 {
 	lrdf_statement p;
 	lrdf_statement *q;
diff --git a/libs/ardour/lxvst_plugin.cc b/libs/ardour/lxvst_plugin.cc
index 737d1c7360..d42679742b 100755
--- a/libs/ardour/lxvst_plugin.cc
+++ b/libs/ardour/lxvst_plugin.cc
@@ -125,7 +125,7 @@ LXVSTPlugin::set_block_size (pframes_t nframes)
 }
 
 float 
-LXVSTPlugin::default_value (uint32_t port)
+LXVSTPlugin::default_value (uint32_t)
 {
 	return 0;
 }
@@ -346,7 +346,7 @@ LXVSTPlugin::load_plugin_preset (PresetRecord r)
 	int index;
 	int const p = sscanf (r.uri.c_str(), "VST:%d:%d", &id, &index);
 	assert (p == 2);
-
+	
 	_vstfx->want_program = index;
 	return true;
 }
@@ -653,7 +653,7 @@ LXVSTPlugin::has_editor () const
 }
 
 void 
-LXVSTPlugin::print_parameter (uint32_t param, char *buf, uint32_t len) const
+LXVSTPlugin::print_parameter (uint32_t param, char *buf, uint32_t /*len*/) const
 {
 	char *first_nonws;
 
diff --git a/libs/ardour/midi_diskstream.cc b/libs/ardour/midi_diskstream.cc
index bf5be343e2..28ee12cc5a 100644
--- a/libs/ardour/midi_diskstream.cc
+++ b/libs/ardour/midi_diskstream.cc
@@ -291,6 +291,7 @@ MidiDiskstream::use_copy_playlist ()
 int
 MidiDiskstream::set_destructive (bool yn)
 {
+	yn = 0; // stop pedantic gcc complaints about unused parameter
 	assert( ! destructive());
 	assert( ! yn);
 	return -1;
diff --git a/libs/ardour/midi_playlist_source.cc b/libs/ardour/midi_playlist_source.cc
index 3b2c8dbb48..6270ad4339 100644
--- a/libs/ardour/midi_playlist_source.cc
+++ b/libs/ardour/midi_playlist_source.cc
@@ -58,7 +58,7 @@ on other ways to approach this issue.
 ********************************************************************************/
 
 MidiPlaylistSource::MidiPlaylistSource (Session& s, const ID& orig, const std::string& name, boost::shared_ptr<MidiPlaylist> p,
-					uint32_t chn, frameoffset_t begin, framecnt_t len, Source::Flag flags)
+					uint32_t /*chn*/, frameoffset_t begin, framecnt_t len, Source::Flag flags)
 	: Source (s, DataType::MIDI, name)
 	, MidiSource (s, name, flags)
 	, PlaylistSource (s, orig, name, p, DataType::MIDI, begin, len, flags)
@@ -128,9 +128,9 @@ MidiPlaylistSource::length (framepos_t)  const
 
 framepos_t
 MidiPlaylistSource::read_unlocked (Evoral::EventSink<framepos_t>& dst,
-				   framepos_t position,
+				   framepos_t /*position*/,
 				   framepos_t start, framecnt_t cnt,
-				   MidiStateTracker* tracker) const
+				   MidiStateTracker*) const
 {
 	boost::shared_ptr<MidiPlaylist> mp = boost::dynamic_pointer_cast<MidiPlaylist> (_playlist);
 
@@ -143,8 +143,8 @@ MidiPlaylistSource::read_unlocked (Evoral::EventSink<framepos_t>& dst,
 
 framepos_t
 MidiPlaylistSource::write_unlocked (MidiRingBuffer<framepos_t>& dst,
-				    framepos_t position,
-				    framecnt_t cnt)
+				    framepos_t,
+				    framecnt_t)
 {
 	fatal << string_compose (_("programming error: %1"), "MidiPlaylistSource::write_unlocked() called - should be impossible") << endmsg;
 	/*NOTREACHED*/
@@ -159,7 +159,7 @@ MidiPlaylistSource::append_event_unlocked_beats(const Evoral::Event<Evoral::Musi
 }
 
 void
-MidiPlaylistSource::append_event_unlocked_frames(const Evoral::Event<framepos_t>& ev, framepos_t source_start)
+MidiPlaylistSource::append_event_unlocked_frames(const Evoral::Event<framepos_t>& /* ev */, framepos_t /*source_start*/)
 {
 	fatal << string_compose (_("programming error: %1"), "MidiPlaylistSource::append_event_unlocked_frames() called - should be impossible") << endmsg;
 	/*NOTREACHED*/
diff --git a/libs/ardour/midi_port.cc b/libs/ardour/midi_port.cc
index c27332fce1..50d4ce64e8 100644
--- a/libs/ardour/midi_port.cc
+++ b/libs/ardour/midi_port.cc
@@ -155,7 +155,7 @@ MidiPort::resolve_notes (void* jack_buffer, MidiBuffer::TimeType when)
 }
 
 void
-MidiPort::flush_buffers (pframes_t nframes, framepos_t time)
+MidiPort::flush_buffers (pframes_t nframes, framepos_t /*time*/)
 {
 	if (sends_output ()) {
 
diff --git a/libs/ardour/midi_stretch.cc b/libs/ardour/midi_stretch.cc
index d9ac1403a9..2ae86a6d1c 100644
--- a/libs/ardour/midi_stretch.cc
+++ b/libs/ardour/midi_stretch.cc
@@ -42,7 +42,7 @@ MidiStretch::~MidiStretch ()
 }
 
 int
-MidiStretch::run (boost::shared_ptr<Region> r, Progress* progress)
+MidiStretch::run (boost::shared_ptr<Region> r, Progress*)
 {
 	SourceList nsrcs;
 	char suffix[32];
diff --git a/libs/ardour/pannable.cc b/libs/ardour/pannable.cc
index ba4632f2b0..4dad58ed12 100644
--- a/libs/ardour/pannable.cc
+++ b/libs/ardour/pannable.cc
@@ -182,7 +182,7 @@ Pannable::get_state ()
 }
 
 XMLNode&
-Pannable::state (bool full)
+Pannable::state (bool /*full*/)
 {
 	XMLNode* node = new XMLNode (X_("Pannable"));
 
diff --git a/libs/ardour/playlist_source.cc b/libs/ardour/playlist_source.cc
index f68033c815..4c01831b02 100644
--- a/libs/ardour/playlist_source.cc
+++ b/libs/ardour/playlist_source.cc
@@ -44,7 +44,7 @@ using namespace ARDOUR;
 using namespace PBD;
 
 PlaylistSource::PlaylistSource (Session& s, const ID& orig, const std::string& name, boost::shared_ptr<Playlist> p, DataType type,
-				frameoffset_t begin, framecnt_t len, Source::Flag flags)
+				frameoffset_t begin, framecnt_t len, Source::Flag /*flags*/)
 	: Source (s, type, name)
 	, _playlist (p)
 	, _original (orig)
@@ -92,7 +92,7 @@ PlaylistSource::add_state (XMLNode& node)
 }
 
 int
-PlaylistSource::set_state (const XMLNode& node, int version)
+PlaylistSource::set_state (const XMLNode& node, int /*version*/)
 {
 	/* check that we have a playlist ID */
 
diff --git a/libs/ardour/plugin.cc b/libs/ardour/plugin.cc
index 153c624a5a..12760e5d6e 100644
--- a/libs/ardour/plugin.cc
+++ b/libs/ardour/plugin.cc
@@ -236,7 +236,7 @@ Plugin::preset_by_uri (const string& uri)
 
 int
 Plugin::connect_and_run (BufferSet& bufs,
-			 ChanMapping in_map, ChanMapping out_map,
+			 ChanMapping /*in_map*/, ChanMapping /*out_map*/,
 			 pframes_t nframes, framecnt_t offset)
 {
 	if (bufs.count().n_midi() > 0) {
@@ -306,7 +306,7 @@ Plugin::set_parameter (uint32_t which, float val)
 }
 
 int
-Plugin::set_state (const XMLNode& node, int version)
+Plugin::set_state (const XMLNode& node, int /*version*/)
 {
 	XMLProperty const * p = node.property (X_("last-preset-uri"));
 	if (p) {
diff --git a/libs/ardour/plugin_manager.cc b/libs/ardour/plugin_manager.cc
index 204867a43d..613fc85c6d 100644
--- a/libs/ardour/plugin_manager.cc
+++ b/libs/ardour/plugin_manager.cc
@@ -652,7 +652,7 @@ PluginManager::add_lxvst_directory (string path)
 	return -1;
 }
 
-static bool lxvst_filter (const string& str, void *arg)
+static bool lxvst_filter (const string& str, void *)
 {
 	/* Not a dotfile, has a prefix before a period, suffix is "so" */
 
diff --git a/libs/ardour/port.cc b/libs/ardour/port.cc
index 5a7c859dbd..b418943bba 100644
--- a/libs/ardour/port.cc
+++ b/libs/ardour/port.cc
@@ -230,7 +230,7 @@ Port::reset ()
 }
 
 void
-Port::cycle_start (pframes_t nframes)
+Port::cycle_start (pframes_t)
 {
         _port_buffer_offset = 0;
 }
@@ -307,7 +307,7 @@ Port::private_latency_range (bool playback) const
 }
 
 jack_latency_range_t
-Port::public_latency_range (bool playback) const
+Port::public_latency_range (bool /*playback*/) const
 {
 	jack_latency_range_t r;
 
diff --git a/libs/ardour/processor.cc b/libs/ardour/processor.cc
index f7afeb99a7..8b54bd4f55 100644
--- a/libs/ardour/processor.cc
+++ b/libs/ardour/processor.cc
@@ -76,6 +76,7 @@ Processor::Processor (const Processor& other)
 	: Evoral::ControlSet (other)
 	, SessionObject (other.session(), other.name())
 	, Automatable (other.session())
+	, Latent (other)
 	, _pending_active(other._pending_active)
 	, _active(other._active)
 	, _next_ab_is_active(false)
diff --git a/libs/ardour/session.cc b/libs/ardour/session.cc
index 5b1dd3894f..a42f2d4430 100644
--- a/libs/ardour/session.cc
+++ b/libs/ardour/session.cc
@@ -2511,7 +2511,7 @@ Session::io_name_is_legal (const std::string& name)
 }
 
 void
-Session::set_exclusive_input_active (boost::shared_ptr<Route> rt, bool others_on)
+Session::set_exclusive_input_active (boost::shared_ptr<Route> rt, bool /*others_on*/)
 {
 	RouteList rl;
 	vector<string> connections;
diff --git a/libs/ardour/session_process.cc b/libs/ardour/session_process.cc
index 947bceac9d..4d974d4830 100644
--- a/libs/ardour/session_process.cc
+++ b/libs/ardour/session_process.cc
@@ -617,7 +617,7 @@ Session::calculate_moving_average_of_slave_delta (int dir, framecnt_t this_delta
 }
 
 void
-Session::track_slave_state (float slave_speed, framepos_t slave_transport_frame, framecnt_t this_delta)
+Session::track_slave_state (float slave_speed, framepos_t slave_transport_frame, framecnt_t /*this_delta*/)
 {
 	if (slave_speed != 0.0f) {
 
diff --git a/libs/ardour/speakers.cc b/libs/ardour/speakers.cc
index 71e524f490..51bae16585 100644
--- a/libs/ardour/speakers.cc
+++ b/libs/ardour/speakers.cc
@@ -71,6 +71,7 @@ Speakers::Speakers ()
 }
 
 Speakers::Speakers (const Speakers& s)
+	: Stateful ()
 {
         _speakers = s._speakers;
 }
diff --git a/libs/ardour/vstfxinfofile.cc b/libs/ardour/vstfxinfofile.cc
index 2d54f4d1cd..076cdad55f 100755
--- a/libs/ardour/vstfxinfofile.cc
+++ b/libs/ardour/vstfxinfofile.cc
@@ -297,12 +297,12 @@ static VSTFXInfo* vstfx_info_from_plugin(VSTFX *vstfx)
 /* A simple 'dummy' audiomaster callback which should be ok,
 we will only be instantiating the plugin in order to get its info*/
 
-static long simple_master_callback(struct AEffect *fx, long opcode, long index, long value, void *ptr, float opt)
+static long simple_master_callback(struct AEffect *, long opcode, long, long, void *, float)
 {
 
-	if(opcode == audioMasterVersion)
+	if (opcode == audioMasterVersion)
 		return 2;
-    else
+	else
 		return 0;
 }
 
diff --git a/libs/audiographer/audiographer/debuggable.h b/libs/audiographer/audiographer/debuggable.h
index 5ef382890b..79e0f80dd3 100644
--- a/libs/audiographer/audiographer/debuggable.h
+++ b/libs/audiographer/audiographer/debuggable.h
@@ -44,6 +44,7 @@ class Debuggable
 
 	bool debug_level (DebugLevel level) {
 		#ifdef NDEBUG
+		level = DEFAULT_DEBUG_LEVEL; /* stop pedantic gcc complaints about unused parameter */
 		return false;
 		#else
 		return L >= level;
diff --git a/libs/audiographer/audiographer/process_context.h b/libs/audiographer/audiographer/process_context.h
index 843c09b618..b73f5d69d5 100644
--- a/libs/audiographer/audiographer/process_context.h
+++ b/libs/audiographer/audiographer/process_context.h
@@ -43,7 +43,7 @@ public:
 	
 	/// Normal copy constructor
 	ProcessContext (ProcessContext<T> const & other)
-		: _data (other._data), _frames (other._frames), _channels (other._channels), _flags (other._flags)
+	: _data (other._data), _frames (other._frames), _channels (other._channels), _flags (other._flags)
 	{ /* No need to validate data */ }
 	
 	/// "Copy constructor" with unique data, frame and channel count, but copies flags
diff --git a/libs/evoral/evoral/PatchChange.hpp b/libs/evoral/evoral/PatchChange.hpp
index 576a1d2e98..aaa481516f 100644
--- a/libs/evoral/evoral/PatchChange.hpp
+++ b/libs/evoral/evoral/PatchChange.hpp
@@ -146,7 +146,9 @@ public:
 		case 2:
 			return _program_change;
 		default:
-			assert (false);
+			abort ();
+			/*NOTREACHED*/
+			return _program_change;
 		}
 	}
 
diff --git a/libs/evoral/src/ControlSet.cpp b/libs/evoral/src/ControlSet.cpp
index 6b793a08ea..bdc73121d2 100644
--- a/libs/evoral/src/ControlSet.cpp
+++ b/libs/evoral/src/ControlSet.cpp
@@ -32,7 +32,7 @@ ControlSet::ControlSet()
 {
 }
 
-ControlSet::ControlSet (const ControlSet& other)
+ControlSet::ControlSet (const ControlSet&)
         : noncopyable ()
 {
         /* derived class must copy controls */
diff --git a/libs/evoral/src/Sequence.cpp b/libs/evoral/src/Sequence.cpp
index fb10bfac7b..a7d58348e2 100644
--- a/libs/evoral/src/Sequence.cpp
+++ b/libs/evoral/src/Sequence.cpp
@@ -1249,7 +1249,7 @@ template<typename Time>
 void
 Sequence<Time>::dump (ostream& str) const
 {
-	Sequence<Time>::const_iterator i;
+	typename Sequence<Time>::const_iterator i;
 	str << "+++ dump\n";
 	for (i = begin(); i != end(); ++i) {
 		str << *i << endl;
diff --git a/libs/evoral/src/libsmf/smf_load.c b/libs/evoral/src/libsmf/smf_load.c
index 060dc5849e..90a22509b5 100644
--- a/libs/evoral/src/libsmf/smf_load.c
+++ b/libs/evoral/src/libsmf/smf_load.c
@@ -275,7 +275,8 @@ is_escape_byte(const unsigned char status)
 static int32_t
 expected_sysex_length(const unsigned char status, const unsigned char *second_byte, const size_t buffer_length, int32_t *consumed_bytes)
 {
-	uint32_t sysex_length, len;
+	uint32_t sysex_length = 0;
+	uint32_t len = 0;
 
 	assert(status == 0xF0);
 
@@ -424,7 +425,8 @@ extract_escaped_event(const unsigned char *buf, const size_t buffer_length, smf_
 	(void) last_status;
 	
 	int status;
-	int32_t message_length, vlq_length;
+	int32_t message_length = 0;
+	int32_t vlq_length = 0;
 	const unsigned char *c = buf;
 
 	status = *buf;
@@ -645,7 +647,8 @@ smf_event_is_textual(const smf_event_t *event)
 char *
 smf_event_extract_text(const smf_event_t *event)
 {
-	uint32_t string_length, length_length;
+	uint32_t string_length = 0;
+	uint32_t length_length = 0;
 
 	if (!smf_event_is_textual(event))
 		return (NULL);
diff --git a/libs/evoral/src/libsmf/smf_save.c b/libs/evoral/src/libsmf/smf_save.c
index b99af75461..0540232707 100644
--- a/libs/evoral/src/libsmf/smf_save.c
+++ b/libs/evoral/src/libsmf/smf_save.c
@@ -180,6 +180,7 @@ smf_format_vlq(unsigned char *buf, int length, unsigned long value)
 	}
 
 	assert(i <= length);
+	length = length; // get rid of stupid gcc warnings about unused params if assert() is null
 
 	/* + 1, because "i" is an offset, not a count. */
 	return (i + 1);
diff --git a/libs/gnomecanvas/libgnomecanvas/gnome-canvas-bpath.c b/libs/gnomecanvas/libgnomecanvas/gnome-canvas-bpath.c
index f7f564a94d..d67595225d 100644
--- a/libs/gnomecanvas/libgnomecanvas/gnome-canvas-bpath.c
+++ b/libs/gnomecanvas/libgnomecanvas/gnome-canvas-bpath.c
@@ -108,7 +108,7 @@ gnome_canvas_bpath_class_init (GnomeCanvasBpathClass *class)
 }
 
 static void
-gnome_canvas_bpath_init (GnomeCanvasBpath *bpath)
+gnome_canvas_bpath_init (GnomeCanvasBpath* bpath)
 {
 
 }
diff --git a/libs/gnomecanvas/libgnomecanvas/gnome-canvas-line.c b/libs/gnomecanvas/libgnomecanvas/gnome-canvas-line.c
index b35a418072..8c1a6e9cc7 100644
--- a/libs/gnomecanvas/libgnomecanvas/gnome-canvas-line.c
+++ b/libs/gnomecanvas/libgnomecanvas/gnome-canvas-line.c
@@ -1125,7 +1125,7 @@ gnome_canvas_line_unrealize (GnomeCanvasItem *item)
 }
 
 static void
-item_to_canvas (GnomeCanvas *canvas, double *item_coords, GdkPoint *canvas_coords, int num_points,
+item_to_canvas (GnomeCanvas * canvas, double *item_coords, GdkPoint *canvas_coords, int num_points,
 		int *num_drawn_points, double i2c[6], int x, int y)
 {
 	int i;
diff --git a/libs/gnomecanvas/libgnomecanvas/gnome-canvas-rich-text.c b/libs/gnomecanvas/libgnomecanvas/gnome-canvas-rich-text.c
index 2a50f2ed4d..cf7c5290e0 100644
--- a/libs/gnomecanvas/libgnomecanvas/gnome-canvas-rich-text.c
+++ b/libs/gnomecanvas/libgnomecanvas/gnome-canvas-rich-text.c
@@ -806,15 +806,15 @@ gnome_canvas_rich_text_move_cursor(GnomeCanvasRichText *text,
 } /* gnome_canvas_rich_text_move_cursor */
 
 static gboolean
-whitespace(gunichar ch, gpointer user_data)
+whitespace(gunichar ch, gpointer ignored)
 {
 	return (ch == ' ' || ch == '\t');
 } /* whitespace */
 
 static gboolean
-not_whitespace(gunichar ch, gpointer user_data)
+not_whitespace(gunichar ch, gpointer ignored)
 {
-	return !whitespace(ch, user_data);
+	return !whitespace(ch, ignored);
 } /* not_whitespace */
 
 static gboolean
@@ -911,7 +911,7 @@ gnome_canvas_rich_text_delete_from_cursor(GnomeCanvasRichText *text,
 
 static gint
 selection_motion_event_handler(GnomeCanvasRichText *text, GdkEvent *event,
-			       gpointer data)
+			       gpointer ignored)
 {
 	GtkTextIter newplace;
 	GtkTextMark *mark;
@@ -936,7 +936,7 @@ selection_motion_event_handler(GnomeCanvasRichText *text, GdkEvent *event,
 static void
 gnome_canvas_rich_text_start_selection_drag(GnomeCanvasRichText *text,
 					    const GtkTextIter *iter,
-					    GdkEventButton *button)
+					    GdkEventButton * button)
 {
 	GtkTextIter newplace;
 
@@ -958,7 +958,7 @@ gnome_canvas_rich_text_start_selection_drag(GnomeCanvasRichText *text,
 
 static gboolean
 gnome_canvas_rich_text_end_selection_drag(GnomeCanvasRichText *text,
-					  GdkEventButton *event)
+					  GdkEventButton * event)
 {
 	if (text->_priv->selection_drag_handler == 0)
 		return FALSE;
@@ -1216,7 +1216,7 @@ gnome_canvas_rich_text_key_press_event(GnomeCanvasItem *item,
 } /* gnome_canvas_rich_text_key_press_event */
 
 static gint
-gnome_canvas_rich_text_key_release_event(GnomeCanvasItem *item, 
+gnome_canvas_rich_text_key_release_event(GnomeCanvasItem * item, 
 					 GdkEventKey *event)
 {
 	return FALSE;
@@ -1403,7 +1403,7 @@ gnome_canvas_rich_text_button_release_event(GnomeCanvasItem *item,
 
 static gint
 gnome_canvas_rich_text_focus_in_event(GnomeCanvasItem *item,
-				      GdkEventFocus *event)
+				      GdkEventFocus * event)
 {
 	GnomeCanvasRichText *text = GNOME_CANVAS_RICH_TEXT(item);
 
@@ -1417,7 +1417,7 @@ gnome_canvas_rich_text_focus_in_event(GnomeCanvasItem *item,
 
 static gint
 gnome_canvas_rich_text_focus_out_event(GnomeCanvasItem *item,
-				       GdkEventFocus *event)
+				       GdkEventFocus * event)
 {
 	GnomeCanvasRichText *text = GNOME_CANVAS_RICH_TEXT(item);
 
@@ -1685,7 +1685,7 @@ request_update(gpointer data)
 } /* request_update */
 
 static void
-invalidated_handler(GtkTextLayout *layout, gpointer data)
+invalidated_handler(GtkTextLayout * layout, gpointer data)
 {
 	GnomeCanvasRichText *text = GNOME_CANVAS_RICH_TEXT(data);
 
@@ -1714,7 +1714,7 @@ scale_fonts(GtkTextTag *tag, gpointer data)
 } /* scale_fonts */
 
 static void
-changed_handler(GtkTextLayout *layout, gint start_y, 
+changed_handler(GtkTextLayout * layout, gint start_y, 
 		gint old_height, gint new_height, gpointer data)
 {
 	GnomeCanvasRichText *text = GNOME_CANVAS_RICH_TEXT(data);
@@ -1864,7 +1864,7 @@ gnome_canvas_rich_text_get_iter_at_location (GnomeCanvasRichText *text,
 
 
 static void
-gnome_canvas_rich_text_set_attributes_from_style(GnomeCanvasRichText *text,
+gnome_canvas_rich_text_set_attributes_from_style(GnomeCanvasRichText * text,
 						 GtkTextAttributes *values,
 						 GtkStyle *style)
 {
diff --git a/libs/gnomecanvas/libgnomecanvas/gnome-canvas-widget.c b/libs/gnomecanvas/libgnomecanvas/gnome-canvas-widget.c
index d94942c8a5..6ac14365d3 100644
--- a/libs/gnomecanvas/libgnomecanvas/gnome-canvas-widget.c
+++ b/libs/gnomecanvas/libgnomecanvas/gnome-canvas-widget.c
@@ -365,7 +365,7 @@ gnome_canvas_widget_set_property (GObject            *object,
 		break;
 
 	case PROP_ANCHOR:
-	        if (witem->anchor != g_value_get_enum (value))
+	        if (witem->anchor != (unsigned int) g_value_get_enum (value))
 		{
 		        witem->anchor = g_value_get_enum (value);
 			update = TRUE;
@@ -469,8 +469,8 @@ gnome_canvas_widget_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_
 }
 
 static void
-gnome_canvas_widget_render (GnomeCanvasItem *item,
-			    GnomeCanvasBuf *buf)
+gnome_canvas_widget_render (GnomeCanvasItem * item,
+			    GnomeCanvasBuf * buf)
 {
 #if 0
 	GnomeCanvasWidget *witem;
@@ -484,8 +484,8 @@ gnome_canvas_widget_render (GnomeCanvasItem *item,
 }
 
 static void
-gnome_canvas_widget_draw (GnomeCanvasItem *item,
-			  GdkDrawable *drawable,
+gnome_canvas_widget_draw (GnomeCanvasItem * item,
+			  GdkDrawable * drawable,
 			  int x, int y,
 			  int width, int height)
 {
diff --git a/libs/gnomecanvas/libgnomecanvas/gnome-canvas.c b/libs/gnomecanvas/libgnomecanvas/gnome-canvas.c
index ae93b1e311..9813f5d33f 100644
--- a/libs/gnomecanvas/libgnomecanvas/gnome-canvas.c
+++ b/libs/gnomecanvas/libgnomecanvas/gnome-canvas.c
@@ -388,7 +388,7 @@ gnome_canvas_item_unmap (GnomeCanvasItem *item)
 
 /* Update handler for canvas items */
 static void
-gnome_canvas_item_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
+gnome_canvas_item_update (GnomeCanvasItem *item, double *affine, ArtSVP * clip_path, int flags)
 {
 	GTK_OBJECT_UNSET_FLAGS (item, GNOME_CANVAS_ITEM_NEED_UPDATE);
 	GTK_OBJECT_UNSET_FLAGS (item, GNOME_CANVAS_ITEM_NEED_AFFINE);
@@ -1423,7 +1423,7 @@ gnome_canvas_group_class_init (GnomeCanvasGroupClass *class)
 
 /* Object initialization function for GnomeCanvasGroup */
 static void
-gnome_canvas_group_init (GnomeCanvasGroup *group)
+gnome_canvas_group_init (GnomeCanvasGroup * group)
 {
 #if 0
 	group->xpos = 0.0;
diff --git a/libs/gtkmm2ext/bindings.cc b/libs/gtkmm2ext/bindings.cc
index 6002f16371..92004e4d27 100644
--- a/libs/gtkmm2ext/bindings.cc
+++ b/libs/gtkmm2ext/bindings.cc
@@ -217,7 +217,7 @@ Bindings::set_action_map (ActionMap& am)
 bool
 Bindings::activate (KeyboardKey kb, Operation op)
 {
-        KeybindingMap* kbm;
+        KeybindingMap* kbm = 0;
 
         switch (op) {
         case Press:
@@ -244,7 +244,7 @@ Bindings::activate (KeyboardKey kb, Operation op)
 void
 Bindings::add (KeyboardKey kb, Operation op, RefPtr<Action> what)
 {
-        KeybindingMap* kbm;
+        KeybindingMap* kbm = 0;
 
         switch (op) {
         case Press:
@@ -269,7 +269,7 @@ Bindings::add (KeyboardKey kb, Operation op, RefPtr<Action> what)
 void
 Bindings::remove (KeyboardKey kb, Operation op)
 {
-        KeybindingMap* kbm;
+        KeybindingMap* kbm = 0;
 
         switch (op) {
         case Press:
@@ -290,7 +290,7 @@ Bindings::remove (KeyboardKey kb, Operation op)
 bool
 Bindings::activate (MouseButton bb, Operation op)
 {
-        MouseButtonBindingMap* bbm;
+        MouseButtonBindingMap* bbm = 0;
 
         switch (op) {
         case Press:
@@ -317,7 +317,7 @@ Bindings::activate (MouseButton bb, Operation op)
 void
 Bindings::add (MouseButton bb, Operation op, RefPtr<Action> what)
 {
-        MouseButtonBindingMap* bbm;
+        MouseButtonBindingMap* bbm = 0;
 
         switch (op) {
         case Press:
@@ -342,7 +342,7 @@ Bindings::add (MouseButton bb, Operation op, RefPtr<Action> what)
 void
 Bindings::remove (MouseButton bb, Operation op)
 {
-        MouseButtonBindingMap* bbm;
+        MouseButtonBindingMap* bbm = 0;
 
         switch (op) {
         case Press:
diff --git a/libs/gtkmm2ext/cairocell.cc b/libs/gtkmm2ext/cairocell.cc
index 5a7f4309ed..86dac26f2c 100644
--- a/libs/gtkmm2ext/cairocell.cc
+++ b/libs/gtkmm2ext/cairocell.cc
@@ -232,13 +232,13 @@ CairoEditableText::on_scroll_event (GdkEventScroll* ev)
 }
 
 bool
-CairoEditableText::on_focus_in_event (GdkEventFocus* ev)
+CairoEditableText::on_focus_in_event (GdkEventFocus*)
 {
 	return false;
 }
 
 bool
-CairoEditableText::on_focus_out_event (GdkEventFocus* ev)
+CairoEditableText::on_focus_out_event (GdkEventFocus*)
 {
 	if (editing_cell) {
 		queue_draw_cell (editing_cell);
diff --git a/libs/gtkmm2ext/gtkapplication_quartz.mm b/libs/gtkmm2ext/gtkapplication_quartz.mm
index 694bfedd50..045db98a95 100644
--- a/libs/gtkmm2ext/gtkapplication_quartz.mm
+++ b/libs/gtkmm2ext/gtkapplication_quartz.mm
@@ -24,6 +24,15 @@
  * Boston, MA 02111-1307, USA.
  */
 
+#include <sigc++/signal.h>
+#include <sigc++/slot.h>
+
+#include <string.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+#include <gtkmm2ext/gtkapplication.h>
+#include <gtkmm2ext/gtkapplication-private.h>
+
 #import <AppKit/NSMenu.h>
 #import <AppKit/NSMenuItem.h>
 #import <AppKit/NSCell.h>
@@ -32,12 +41,6 @@
 #import <Foundation/NSString.h>
 #import <Foundation/NSNotification.h>
 
-#include <string.h>
-#include <gtk/gtk.h>
-#include <gdk/gdkkeysyms.h>
-#include <gtkmm2ext/gtkapplication.h>
-#include <gtkmm2ext/gtkapplication-private.h>
-
 #define UNUSED_PARAMETER(a) (void) (a)
 
 // #define DEBUG(format, ...) g_printerr ("%s: " format, G_STRFUNC, ## __VA_ARGS__)
diff --git a/libs/gtkmm2ext/gtkapplication_x11.c b/libs/gtkmm2ext/gtkapplication_x11.c
index dd16e36c09..8ab590fb54 100644
--- a/libs/gtkmm2ext/gtkapplication_x11.c
+++ b/libs/gtkmm2ext/gtkapplication_x11.c
@@ -34,13 +34,12 @@ void gtk_application_cleanup ()
 }
 
 void                      
-gtk_application_set_menu_bar       (GtkMenuShell    *menu_shell)
+gtk_application_set_menu_bar (GtkMenuShell* menushell)
 {
 }
 
 void                      
-gtk_application_add_app_menu_item   (GtkApplicationMenuGroup *group,
-				     GtkMenuItem     *menu_item)
+gtk_application_add_app_menu_item (GtkApplicationMenuGroup* group, GtkMenuItem* item)
 {
 }
 
diff --git a/libs/gtkmm2ext/gtkmm2ext/cell_renderer_pixbuf_multi.h b/libs/gtkmm2ext/gtkmm2ext/cell_renderer_pixbuf_multi.h
index dfa81cffe0..c856414150 100644
--- a/libs/gtkmm2ext/gtkmm2ext/cell_renderer_pixbuf_multi.h
+++ b/libs/gtkmm2ext/gtkmm2ext/cell_renderer_pixbuf_multi.h
@@ -20,13 +20,6 @@
 #ifndef __gtkmm2ext_cell_renderer_pixbuf_multi_h__ 
 #define __gtkmm2ext_cell_renderer_pixbuf_multi_h__
 
-#ifdef GTKOSX
-#include <MacTypes.h>
-#if defined(Style)
-#undef style
-#endif
-#endif
-
 #include <map>
 #include <stdint.h>
 
diff --git a/libs/gtkmm2ext/gtkmm2ext/cell_renderer_pixbuf_toggle.h b/libs/gtkmm2ext/gtkmm2ext/cell_renderer_pixbuf_toggle.h
index 4a1bbb9051..7bc5d80685 100644
--- a/libs/gtkmm2ext/gtkmm2ext/cell_renderer_pixbuf_toggle.h
+++ b/libs/gtkmm2ext/gtkmm2ext/cell_renderer_pixbuf_toggle.h
@@ -17,13 +17,6 @@
 
 */
 
-#ifdef GTKOSX
-#include <MacTypes.h>
-#if defined(Style)
-#undef style
-#endif
-#endif
-
 #ifndef __gtkmm2ext_cell_renderer_pixbuf_toggle_h__ 
 #define __gtkmm2ext_cell_renderer_pixbuf_toggle_h__
 
diff --git a/libs/gtkmm2ext/gtkmm2ext/dndvbox.h b/libs/gtkmm2ext/gtkmm2ext/dndvbox.h
index e0b1c6ea13..649455e86b 100644
--- a/libs/gtkmm2ext/gtkmm2ext/dndvbox.h
+++ b/libs/gtkmm2ext/gtkmm2ext/dndvbox.h
@@ -283,7 +283,7 @@ private:
 	}
 
 	/* Draw the drag icon */
-	bool icon_expose (GdkEventExpose* ev)
+	bool icon_expose (GdkEventExpose*)
 	{
 		/* Just grab the child's widget and use that */
 
@@ -307,7 +307,7 @@ private:
 	}
 	
 	void drag_data_received (
-		Glib::RefPtr<Gdk::DragContext> const & context, int x, int y, Gtk::SelectionData const & selection_data, guint /*info*/, guint time
+		Glib::RefPtr<Gdk::DragContext> const & context, int /*x*/, int y, Gtk::SelectionData const & selection_data, guint /*info*/, guint time
 		)
 	{
 		/* work out where it was dropped */
@@ -374,7 +374,7 @@ private:
 		}
 	}
 
-	bool drag_motion (Glib::RefPtr<Gdk::DragContext> const &, int x, int y, guint)
+	bool drag_motion (Glib::RefPtr<Gdk::DragContext> const &, int /*x*/, int y, guint)
 	{
 		if (_children.empty ()) {
 			return false;
diff --git a/libs/gtkmm2ext/keyboard.cc b/libs/gtkmm2ext/keyboard.cc
index 20380d5b01..10c9723696 100644
--- a/libs/gtkmm2ext/keyboard.cc
+++ b/libs/gtkmm2ext/keyboard.cc
@@ -69,7 +69,7 @@ const char* Keyboard::primary_modifier_name() { return _("Command"); }
 const char* Keyboard::secondary_modifier_name() { return _("Option"); }
 const char* Keyboard::tertiary_modifier_name() { return _("Shift"); }
 const char* Keyboard::level4_modifier_name() { return _("Control"); }
-const char* Keyboard::copy_modifier_name() { return _("Mod1";    ); }
+const char* Keyboard::copy_modifier_name() { return _("Mod1"); }
 const char* Keyboard::rangeselect_modifier_name() { return _("Shift"); }
 
 #else
diff --git a/libs/gtkmm2ext/motionfeedback.cc b/libs/gtkmm2ext/motionfeedback.cc
index c3152d7616..6b85913d0c 100644
--- a/libs/gtkmm2ext/motionfeedback.cc
+++ b/libs/gtkmm2ext/motionfeedback.cc
@@ -253,14 +253,14 @@ MotionFeedback::pixwin_motion_notify_event (GdkEventMotion *ev)
 }
 
 bool
-MotionFeedback::pixwin_enter_notify_event (GdkEventCrossing *ev) 
+MotionFeedback::pixwin_enter_notify_event (GdkEventCrossing*) 
 {
 	pixwin.grab_focus();
 	return false;
 }
 
 bool
-MotionFeedback::pixwin_leave_notify_event (GdkEventCrossing *ev) 
+MotionFeedback::pixwin_leave_notify_event (GdkEventCrossing*) 
 {
 	pixwin.unset_flags (HAS_FOCUS);
 	return false;
@@ -316,7 +316,7 @@ MotionFeedback::pixwin_key_press_event (GdkEventKey *ev)
 }
 
 bool
-MotionFeedback::pixwin_expose_event (GdkEventExpose* ev)
+MotionFeedback::pixwin_expose_event (GdkEventExpose*)
 {
 	if (!_controllable) {
 		return true;
diff --git a/libs/gtkmm2ext/treeutils.cc b/libs/gtkmm2ext/treeutils.cc
index 0ed8a9d5f9..d509ff6796 100644
--- a/libs/gtkmm2ext/treeutils.cc
+++ b/libs/gtkmm2ext/treeutils.cc
@@ -25,8 +25,8 @@ using namespace Glib;
 using namespace Gtk;
 
 void
-Gtkmm2ext::treeview_select_one (RefPtr<TreeSelection> selection, RefPtr<TreeModel> model, TreeView& view,
-                                TreeIter iter, TreePath path, TreeViewColumn* col)
+Gtkmm2ext::treeview_select_one (RefPtr<TreeSelection> selection, RefPtr<TreeModel> /*model*/, TreeView& view,
+                                TreeIter /*iter*/, TreePath path, TreeViewColumn* col)
 {
         if (!view.row_expanded (path)) {
                 // cerr << "!! selecting a row that isn't expanded! " << path.to_string() << endl;
diff --git a/libs/midi++2/midi++/names.h b/libs/midi++2/midi++/names.h
index da83cdcb41..9597de3928 100644
--- a/libs/midi++2/midi++/names.h
+++ b/libs/midi++2/midi++/names.h
@@ -220,8 +220,11 @@ inline static const char* midi_name(uint8_t status)
 	case MIDI_CTL_POLY:
 		return "Polyphonic Mode"; break;
 	default:
-		return "Unnamed"; break;
+		break;
 	}
+
+	return "Unnamed";
+	
 }
 
 #endif /* __midinames_h__ */
diff --git a/libs/panners/vbap/vbap.cc b/libs/panners/vbap/vbap.cc
index d4a7030d9b..59f8cddb62 100644
--- a/libs/panners/vbap/vbap.cc
+++ b/libs/panners/vbap/vbap.cc
@@ -33,7 +33,7 @@ static PanPluginDescriptor _descriptor = {
 
 extern "C" { PanPluginDescriptor* panner_descriptor () { return &_descriptor; } }
 
-VBAPanner::Signal::Signal (Session& session, VBAPanner& p, uint32_t n, uint32_t n_speakers)
+VBAPanner::Signal::Signal (Session&, VBAPanner&, uint32_t, uint32_t n_speakers)
 {
         resize_gains (n_speakers);
 
@@ -363,9 +363,11 @@ VBAPanner::distribute_one (AudioBuffer& srcbuf, BufferSet& obufs, gain_t gain_co
 }
 
 void 
-VBAPanner::distribute_one_automated (AudioBuffer& src, BufferSet& obufs,
-                                     framepos_t start, framepos_t end, pframes_t nframes, pan_t** buffers, uint32_t which)
+VBAPanner::distribute_one_automated (AudioBuffer& /*src*/, BufferSet& /*obufs*/,
+                                     framepos_t /*start*/, framepos_t /*end*/, 
+				     pframes_t /*nframes*/, pan_t** /*buffers*/, uint32_t /*which*/)
 {
+	/* XXX to be implemented */
 }
 
 XMLNode&
diff --git a/libs/pbd/boost_debug.cc b/libs/pbd/boost_debug.cc
index 9d307f64af..3ddbc88e6d 100644
--- a/libs/pbd/boost_debug.cc
+++ b/libs/pbd/boost_debug.cc
@@ -328,35 +328,35 @@ boost_debug_list_ptrs ()
 
 namespace boost {
 
-void sp_scalar_constructor_hook( void * object, std::size_t size, void * pn )
+void sp_scalar_constructor_hook( void *, std::size_t, void *)
 {
 }
 
-void sp_scalar_destructor_hook( void * object, std::size_t size, void * pn )
+void sp_scalar_destructor_hook( void *, std::size_t, void *)
 {
 }
 
-void sp_counter_ref_hook (void* pn, long use_count)
+void sp_counter_ref_hook (void* /*pn*/, long /* use count */)
 {
 }
 
-void sp_counter_release_hook (void* pn, long use_count) 
+void sp_counter_release_hook (void* /*pn*/, long /*use_count*/) 
 {
 }
 
-void sp_array_constructor_hook(void * p)
+void sp_array_constructor_hook(void *)
 {
 }
 
-void sp_array_destructor_hook(void * p)
+void sp_array_destructor_hook(void *)
 {
 }
 
-void sp_scalar_constructor_hook(void * p)
+void sp_scalar_constructor_hook(void *)
 {
 }
 
-void sp_scalar_destructor_hook(void * p)
+void sp_scalar_destructor_hook(void *)
 {
 }
 
diff --git a/libs/qm-dsp/dsp/onsets/DetectionFunction.cpp b/libs/qm-dsp/dsp/onsets/DetectionFunction.cpp
index 6ba1ad06ca..1abed021f9 100644
--- a/libs/qm-dsp/dsp/onsets/DetectionFunction.cpp
+++ b/libs/qm-dsp/dsp/onsets/DetectionFunction.cpp
@@ -100,12 +100,12 @@ double DetectionFunction::process( const double *TDomain )
     // data directly), we will have to use the next smallest power of
     // two from the block size.  Results may vary accordingly!
 
-    int actualLength = MathUtilities::previousPowerOfTwo(m_dataLength);
+    unsigned int actualLength = MathUtilities::previousPowerOfTwo(m_dataLength);
 
     if (actualLength != m_dataLength) {
         // Pre-fill mag and phase vectors with zero, as the FFT output
         // will not fill the arrays
-        for (int i = actualLength/2; i < m_dataLength/2; ++i) {
+        for (unsigned int i = actualLength/2; i < m_dataLength/2; ++i) {
             m_magnitude[i] = 0;
             m_thetaAngle[0] = 0;
         }
diff --git a/libs/qm-dsp/dsp/onsets/PeakPicking.cpp b/libs/qm-dsp/dsp/onsets/PeakPicking.cpp
index 879ae8813c..55f56b46d0 100644
--- a/libs/qm-dsp/dsp/onsets/PeakPicking.cpp
+++ b/libs/qm-dsp/dsp/onsets/PeakPicking.cpp
@@ -80,7 +80,7 @@ void PeakPicking::process( double* src, unsigned int len, vector<int> &onsets )
 	
     quadEval( m_maxima, onsets );
 
-    for( int b = 0; b <  m_maxima.size(); b++)
+    for(unsigned int b = 0; b <  m_maxima.size(); b++)
     {
 	src[ b ] = m_maxima[ b ];
     }
@@ -131,11 +131,8 @@ int PeakPicking::quadEval( vector<double> &src, vector<int> &idx )
 	p = TPolyFit::PolyFit2( m_err, m_maxFit, m_poly);
 
 	double f = m_poly[0];
-	double g = m_poly[1];
 	double h = m_poly[2];
 
-	int kk = m_poly.size();
-
 	if (h < -Qfilta || f > Qfiltc)
 	{
 	    idx.push_back(m_maxIndex[j]);
diff --git a/libs/qm-dsp/dsp/signalconditioning/DFProcess.cpp b/libs/qm-dsp/dsp/signalconditioning/DFProcess.cpp
index bbe308b985..15c6d3ce36 100644
--- a/libs/qm-dsp/dsp/signalconditioning/DFProcess.cpp
+++ b/libs/qm-dsp/dsp/signalconditioning/DFProcess.cpp
@@ -180,7 +180,7 @@ void DFProcess::removeDCNormalize( double *src, double*dst )
 
     MathUtilities::getAlphaNorm( src, m_length, m_alphaNormParam, &DFAlphaNorm );
 
-    for( unsigned int i = 0; i< m_length; i++)
+    for(int i = 0; i< m_length; i++)
     {
 	dst[ i ] = ( src[ i ] - DFMin ) / DFAlphaNorm; 
     }
diff --git a/libs/qm-dsp/dsp/wavelet/Wavelet.cpp b/libs/qm-dsp/dsp/wavelet/Wavelet.cpp
index 764c84b24a..504090528c 100644
--- a/libs/qm-dsp/dsp/wavelet/Wavelet.cpp
+++ b/libs/qm-dsp/dsp/wavelet/Wavelet.cpp
@@ -77,7 +77,7 @@ Wavelet::createDecompositionFilters(Type wavelet,
     lpd.clear();
     hpd.clear();
 
-    int flength = 0;
+    unsigned int flength = 0;
 	
     switch (wavelet) {
 
diff --git a/libs/qm-dsp/maths/CosineDistance.cpp b/libs/qm-dsp/maths/CosineDistance.cpp
index 13ab9ce0e8..fd2aeef3fe 100644
--- a/libs/qm-dsp/maths/CosineDistance.cpp
+++ b/libs/qm-dsp/maths/CosineDistance.cpp
@@ -34,7 +34,7 @@ double CosineDistance::distance(const vector<double> &v1,
     }
     else
     {
-        for(int i=0; i<v1.size(); i++)
+        for(unsigned int i=0; i<v1.size(); i++)
         {
             dSum1 += v1[i]*v2[i];
             dDen1 += v1[i]*v1[i];
diff --git a/libs/qm-dsp/maths/MathUtilities.cpp b/libs/qm-dsp/maths/MathUtilities.cpp
index 809874121e..70a275912c 100644
--- a/libs/qm-dsp/maths/MathUtilities.cpp
+++ b/libs/qm-dsp/maths/MathUtilities.cpp
@@ -155,7 +155,7 @@ double MathUtilities::mean(const std::vector<double> &src,
 {
     double sum = 0.;
 	
-    for (int i = 0; i < count; ++i)
+    for (unsigned int i = 0; i < count; ++i)
     {
         sum += src[start + i];
     }
@@ -167,7 +167,6 @@ void MathUtilities::getFrameMinMax(const double *data, unsigned int len, double
 {
     unsigned int i;
     double temp = 0.0;
-    double a=0.0;
 
     if (len == 0) {
         *min = *max = 0;
@@ -317,9 +316,9 @@ void MathUtilities::normalise(std::vector<double> &data, NormaliseType type)
     case NormaliseUnitSum:
     {
         double sum = 0.0;
-        for (int i = 0; i < data.size(); ++i) sum += data[i];
+        for (unsigned int i = 0; i < data.size(); ++i) sum += data[i];
         if (sum != 0.0) {
-            for (int i = 0; i < data.size(); ++i) data[i] /= sum;
+            for (unsigned int i = 0; i < data.size(); ++i) data[i] /= sum;
         }
     }
     break;
@@ -327,11 +326,11 @@ void MathUtilities::normalise(std::vector<double> &data, NormaliseType type)
     case NormaliseUnitMax:
     {
         double max = 0.0;
-        for (int i = 0; i < data.size(); ++i) {
+        for (unsigned int i = 0; i < data.size(); ++i) {
             if (fabs(data[i]) > max) max = fabs(data[i]);
         }
         if (max != 0.0) {
-            for (int i = 0; i < data.size(); ++i) data[i] /= max;
+            for (unsigned int i = 0; i < data.size(); ++i) data[i] /= max;
         }
     }
     break;
diff --git a/libs/qm-dsp/maths/Polyfit.h b/libs/qm-dsp/maths/Polyfit.h
index 86bb64cb1e..3fac62d1b2 100644
--- a/libs/qm-dsp/maths/Polyfit.h
+++ b/libs/qm-dsp/maths/Polyfit.h
@@ -105,13 +105,13 @@ double TPolyFit::PolyFit2 (const vector<double> &x,
 // nterms = coefs.size()
 // npoints = x.size()
 {
-    int i, j;
+    unsigned int i, j;
     double xi, yi, yc, srs, sum_y, sum_y2;
     Matrix xmatr;        // Data matrix
     Matrix a;
     vector<double> g;      // Constant vector
-    const int npoints(x.size());
-    const int nterms(coefs.size());
+    const unsigned int npoints(x.size());
+    const unsigned int nterms(coefs.size());
     double correl_coef;
     zeroise(g, nterms);
     zeroise(a, nterms, nterms);
@@ -278,7 +278,8 @@ bool TPolyFit::GaussJordan2(Matrix &b,
     double big, t;
     double pivot;
     double determ;
-    int irow, icol;
+    int irow = 0;
+    int icol = 0;
     int ncol(b.size());
     int nv = 1;                  // single constant vector
     for(int i = 0; i < ncol; ++i)
diff --git a/libs/rubberband/src/StretcherProcess.cpp b/libs/rubberband/src/StretcherProcess.cpp
index 47bf77e197..3b832e09e1 100644
--- a/libs/rubberband/src/StretcherProcess.cpp
+++ b/libs/rubberband/src/StretcherProcess.cpp
@@ -200,6 +200,7 @@ RubberBandStretcher::Impl::processChunks(size_t c, bool &any, bool &last)
         if (!cd.draining) {
             size_t got = cd.inbuf->peek(cd.fltbuf, m_windowSize);
             assert(got == m_windowSize || cd.inputSize >= 0);
+            got = 0;
             cd.inbuf->skip(m_increment);
             analyseChunk(c);
         }
@@ -230,6 +231,7 @@ RubberBandStretcher::Impl::processOneChunk()
         ChannelData &cd = *m_channelData[c];
         if (!cd.draining) {
             size_t got = cd.inbuf->peek(cd.fltbuf, m_windowSize);
+            got = 0;
             assert(got == m_windowSize || cd.inputSize >= 0);
             cd.inbuf->skip(m_increment);
             analyseChunk(c);
diff --git a/libs/surfaces/generic_midi/midicontrollable.cc b/libs/surfaces/generic_midi/midicontrollable.cc
index 426d730743..bae3201072 100644
--- a/libs/surfaces/generic_midi/midicontrollable.cc
+++ b/libs/surfaces/generic_midi/midicontrollable.cc
@@ -17,7 +17,6 @@
 
 */
 
-#define __STDC_FORMAT_MACROS 1
 #include <stdint.h>
 #include <cmath>
 #include <climits>
diff --git a/libs/surfaces/osc/osc.cc b/libs/surfaces/osc/osc.cc
index 280959ae09..a76943156c 100644
--- a/libs/surfaces/osc/osc.cc
+++ b/libs/surfaces/osc/osc.cc
@@ -576,7 +576,7 @@ OSC::_catchall (const char *path, const char *types, lo_arg **argv, int argc, vo
 }
 
 int
-OSC::catchall (const char *path, const char *types, lo_arg **argv, int argc, lo_message msg) 
+OSC::catchall (const char *path, const char* /*types*/, lo_arg **argv, int argc, lo_message msg) 
 {
 	size_t len;
 	int ret = 1; /* unhandled */
diff --git a/libs/surfaces/osc/osc.h b/libs/surfaces/osc/osc.h
index 27c2e6ba03..4da22cf9e4 100644
--- a/libs/surfaces/osc/osc.h
+++ b/libs/surfaces/osc/osc.h
@@ -124,7 +124,7 @@ class OSC : public ARDOUR::ControlProtocol, public AbstractUI<OSCUIRequest>
         static int _ ## name (const char *path, const char *types, lo_arg **argv, int argc, void *data, void *user_data) { \
 		return static_cast<OSC*>(user_data)->cb_ ## name (path, types, argv, argc, data); \
         } \
-        int cb_ ## name (const char *, const char *, lo_arg **argv, int argc, void *data) { \
+        int cb_ ## name (const char *, const char *, lo_arg **, int, void *data) { \
 		name (data);		\
 		return 0;		\
 	}
@@ -188,7 +188,7 @@ class OSC : public ARDOUR::ControlProtocol, public AbstractUI<OSCUIRequest>
         static int _ ## name (const char *path, const char *types, lo_arg **argv, int argc, void *data, void *user_data) { \
                return static_cast<OSC*>(user_data)->cb_ ## name (path, types, argv, argc, data); \
         } \
-        int cb_ ## name (const char *path, const char *types, lo_arg **argv, int argc, void *data) { \
+        int cb_ ## name (const char *, const char *, lo_arg **argv, int argc, void *data) { \
                 if (argc > 1) {                                                \
                  name (argv[0]->arg1type, argv[1]->arg2type,argv[2]->arg3type); \
                 }                                                      \
@@ -199,7 +199,7 @@ class OSC : public ARDOUR::ControlProtocol, public AbstractUI<OSCUIRequest>
         static int _ ## name (const char *path, const char *types, lo_arg **argv, int argc, void *data, void *user_data) { \
                return static_cast<OSC*>(user_data)->cb_ ## name (path, types, argv, argc, data); \
         } \
-        int cb_ ## name (const char *path, const char *types, lo_arg **argv, int argc, void *data) { \
+        int cb_ ## name (const char *, const char *, lo_arg **argv, int argc, void *data) { \
                 if (argc > 1) {                                                \
                  name (argv[0]->arg1type, argv[1]->arg2type,argv[2]->arg3type,argv[3]->arg4type); \
                 }                                                      \
diff --git a/libs/taglib/taglib/fileref.h b/libs/taglib/taglib/fileref.h
index cb4c2b41cc..706ddbae0d 100644
--- a/libs/taglib/taglib/fileref.h
+++ b/libs/taglib/taglib/fileref.h
@@ -108,6 +108,7 @@ namespace TagLib {
                                bool readAudioProperties = true,
                                AudioProperties::ReadStyle
                                audioPropertiesStyle = AudioProperties::Average) const = 0;
+      virtual ~FileTypeResolver() {}
     };
 
     /*!
diff --git a/libs/taglib/taglib/mpeg/id3v1/id3v1tag.h b/libs/taglib/taglib/mpeg/id3v1/id3v1tag.h
index 8dc60c3d23..a2372f8738 100644
--- a/libs/taglib/taglib/mpeg/id3v1/id3v1tag.h
+++ b/libs/taglib/taglib/mpeg/id3v1/id3v1tag.h
@@ -78,6 +78,7 @@ namespace TagLib {
        * ISO-8859-1.
        */
       virtual ByteVector render(const String &s) const;
+      virtual ~StringHandler() {}
     };
 
     //! The main class in the ID3v1 implementation
diff --git a/libs/vamp-sdk/src/vamp-sdk/PluginAdapter.cpp b/libs/vamp-sdk/src/vamp-sdk/PluginAdapter.cpp
index 5a4593dde8..c937ba67b7 100644
--- a/libs/vamp-sdk/src/vamp-sdk/PluginAdapter.cpp
+++ b/libs/vamp-sdk/src/vamp-sdk/PluginAdapter.cpp
@@ -588,7 +588,7 @@ PluginAdapterBase::Impl::vampGetRemainingFeatures(VampPluginHandle handle)
 }
 
 void
-PluginAdapterBase::Impl::vampReleaseFeatureSet(VampFeatureList *fs)
+PluginAdapterBase::Impl::vampReleaseFeatureSet(VampFeatureList *)
 {
 #ifdef DEBUG_PLUGIN_ADAPTER
     std::cerr << "PluginAdapterBase::Impl::vampReleaseFeatureSet" << std::endl;