Fix some unused parameter warnings.

git-svn-id: svn://localhost/ardour2/branches/3.0@5403 d708f5d6-7413-0410-9779-e7cbd77b26cf

71 files changed, 197 insertions, 193 deletions

diff --git a/libs/ardour/amp.cc b/libs/ardour/amp.cc
index cc63353886..c5183eb3db 100644
--- a/libs/ardour/amp.cc
+++ b/libs/ardour/amp.cc
@@ -71,7 +71,7 @@ Amp::configure_io (ChanCount in, ChanCount out)
 }
 
 void
-Amp::run (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame, nframes_t nframes)
+Amp::run (BufferSet& bufs, sframes_t /*start_frame*/, sframes_t /*end_frame*/, nframes_t nframes)
 {
 	gain_t mute_gain;
 
diff --git a/libs/ardour/ardour/automatable.h b/libs/ardour/ardour/automatable.h
index ed98e8d8ba..7fac339f77 100644
--- a/libs/ardour/ardour/automatable.h
+++ b/libs/ardour/ardour/automatable.h
@@ -101,8 +101,7 @@ public:
 
 	void can_automate(Evoral::Parameter);
 
-	virtual void auto_state_changed (Evoral::Parameter which) {}
-
+	virtual void auto_state_changed (Evoral::Parameter /*which*/) {}
 	
 	int load_automation (const std::string& path);
 	int old_set_automation_state(const XMLNode&);
diff --git a/libs/ardour/ardour/automatable_sequence.h b/libs/ardour/ardour/automatable_sequence.h
index a1d34ae92d..23ebb161c8 100644
--- a/libs/ardour/ardour/automatable_sequence.h
+++ b/libs/ardour/ardour/automatable_sequence.h
@@ -29,7 +29,7 @@ namespace ARDOUR {
 template<typename T>
 class AutomatableSequence : public Automatable, public Evoral::Sequence<T> {
 public:
-	AutomatableSequence(Session& s, size_t size)
+	AutomatableSequence(Session& s, size_t /*size*/)
 		: Evoral::ControlSet()
 		, Automatable(s)
 		, Evoral::Sequence<T>(EventTypeMap::instance())
diff --git a/libs/ardour/ardour/diskstream.h b/libs/ardour/ardour/diskstream.h
index 8a51a3d570..9eb5bae3de 100644
--- a/libs/ardour/ardour/diskstream.h
+++ b/libs/ardour/ardour/diskstream.h
@@ -94,9 +94,9 @@ class Diskstream : public SessionObject, public boost::noncopyable
 	virtual void set_record_enabled (bool yn) = 0;
 
 	bool destructive() const { return _flags & Destructive; }
-	virtual int set_destructive (bool yn) { return -1; }
-	virtual int set_non_layered (bool yn) { return -1; }
-	virtual	bool can_become_destructive (bool& requires_bounce) const { return false; }
+	virtual int set_destructive (bool /*yn*/) { return -1; }
+	virtual int set_non_layered (bool /*yn*/) { return -1; }
+	virtual	bool can_become_destructive (bool& /*requires_bounce*/) const { return false; }
 
 	bool           hidden()      const { return _flags & Hidden; }
 	bool           recordable()  const { return _flags & Recordable; }
@@ -109,7 +109,7 @@ class Diskstream : public SessionObject, public boost::noncopyable
 
 	void set_speed (double);
 	void non_realtime_set_speed ();
-	virtual void non_realtime_locate (nframes_t location) {};
+	virtual void non_realtime_locate (nframes_t /*location*/) {};
 	virtual void playlist_modified ();
 
 	boost::shared_ptr<Playlist> playlist () { return _playlist; }
diff --git a/libs/ardour/ardour/export_channel.h b/libs/ardour/ardour/export_channel.h
index 326d1fd9a4..4fe1efa294 100644
--- a/libs/ardour/ardour/export_channel.h
+++ b/libs/ardour/ardour/export_channel.h
@@ -131,8 +131,8 @@ class RegionExportChannel : public ExportChannel
 
   public:
 	void read (Sample * data, nframes_t frames_to_read) const { factory.read (channel, data, frames_to_read); }
-	void get_state (XMLNode * node) const {};
-	void set_state (XMLNode * node, Session & session) {};
+	void get_state (XMLNode * /*node*/) const {};
+	void set_state (XMLNode * /*node*/, Session & /*session*/) {};
 	bool empty () const { return false; }
 	// Region export should never have duplicate channels, so there need not be any semantics here
 	bool operator< (ExportChannel const & other) const { return this < &other; }
diff --git a/libs/ardour/ardour/export_utilities.h b/libs/ardour/ardour/export_utilities.h
index 1da79a8d39..a9044345a6 100644
--- a/libs/ardour/ardour/export_utilities.h
+++ b/libs/ardour/ardour/export_utilities.h
@@ -137,7 +137,7 @@ class Normalizer : public GraphSinkVertex<float, float>
 class NullSink : public GraphSink<float>
 {
   public:
-	nframes_t write (float * data, nframes_t frames) { return frames; }
+	nframes_t write (float * /*data*/, nframes_t frames) { return frames; }
 };
 
 
diff --git a/libs/ardour/ardour/interpolation.h b/libs/ardour/ardour/interpolation.h
index 1ebdafefa2..01ca994d7d 100644
--- a/libs/ardour/ardour/interpolation.h
+++ b/libs/ardour/ardour/interpolation.h
@@ -21,7 +21,7 @@ class Interpolation {
          double target_speed()          const { return _target_speed; }
          double speed()                 const { return _speed; }
          
-         void add_channel_to (int input_buffer_size, int output_buffer_size) {}
+	void add_channel_to (int /*input_buffer_size*/, int /*output_buffer_size*/) {}
          void remove_channel_from () {}
   
          void reset () {}
@@ -101,7 +101,7 @@ class LibSamplerateInterpolation : public Interpolation {
         ~LibSamplerateInterpolation ();
     
         void   set_speed (double new_speed);
-        void   set_target_speed (double new_speed)   {}
+        void   set_target_speed (double /*new_speed*/) {}
         double speed ()                        const { return _speed;      }
         
         void add_channel_to (int input_buffer_size, int output_buffer_size);
diff --git a/libs/ardour/ardour/ladspa_plugin.h b/libs/ardour/ardour/ladspa_plugin.h
index 847b582432..b610a87567 100644
--- a/libs/ardour/ardour/ladspa_plugin.h
+++ b/libs/ardour/ardour/ladspa_plugin.h
@@ -82,7 +82,7 @@ class LadspaPlugin : public ARDOUR::Plugin
 			_descriptor->cleanup (_handle);
 	}
 
-	void set_block_size (nframes_t nframes) {}
+	void set_block_size (nframes_t /*nframes*/) {}
 	
 	int connect_and_run (BufferSet& bufs,
 			ChanMapping in, ChanMapping out,
diff --git a/libs/ardour/ardour/lv2_plugin.h b/libs/ardour/ardour/lv2_plugin.h
index e7a755e4fc..1136f75cb6 100644
--- a/libs/ardour/ardour/lv2_plugin.h
+++ b/libs/ardour/ardour/lv2_plugin.h
@@ -94,7 +94,7 @@ class LV2Plugin : public ARDOUR::Plugin
 		_instance = NULL;
 	}
 
-	void set_block_size (nframes_t nframes) {}
+	void set_block_size (nframes_t /*nframes*/) {}
 	
 	int connect_and_run (BufferSet& bufs,
 			ChanMapping in, ChanMapping out,
diff --git a/libs/ardour/ardour/midi_region.h b/libs/ardour/ardour/midi_region.h
index 6a4d492237..93a9f76f31 100644
--- a/libs/ardour/ardour/midi_region.h
+++ b/libs/ardour/ardour/midi_region.h
@@ -52,7 +52,7 @@ class MidiRegion : public Region
 	boost::shared_ptr<MidiSource> midi_source (uint32_t n=0) const;
 	
 	/* Stub Readable interface */
-	virtual nframes_t read (Sample*, sframes_t pos, nframes_t cnt, int channel) const { return 0; }
+	virtual nframes_t read (Sample*, sframes_t /*pos*/, nframes_t /*cnt*/, int /*channel*/) const { return 0; }
 	virtual sframes_t readable_length() const { return length(); }
 
 	nframes_t read_at (MidiRingBuffer<nframes_t>& dst,
diff --git a/libs/ardour/ardour/panner.h b/libs/ardour/ardour/panner.h
index 3c66046ad1..474b3193c7 100644
--- a/libs/ardour/ardour/panner.h
+++ b/libs/ardour/ardour/panner.h
@@ -210,7 +210,7 @@ class Panner : public SessionObject, public AutomatableControls
 	AutoStyle automation_style() const;
 	bool touching() const;
 
-	bool can_support_io_configuration (const ChanCount& in, ChanCount& out) const { return true; };
+	bool can_support_io_configuration (const ChanCount& /*in*/, ChanCount& /*out*/) const { return true; };
 
 	/// The fundamental Panner function
 	void run (BufferSet& src, BufferSet& dest, sframes_t start_frame, sframes_t end_frames, nframes_t nframes);
diff --git a/libs/ardour/ardour/playlist.h b/libs/ardour/ardour/playlist.h
index 35b7fa9069..db928abab8 100644
--- a/libs/ardour/ardour/playlist.h
+++ b/libs/ardour/ardour/playlist.h
@@ -251,11 +251,11 @@ class Playlist : public SessionObject,
 	void splice_locked (nframes_t at, nframes64_t distance, boost::shared_ptr<Region> exclude);
 	void splice_unlocked (nframes_t at, nframes64_t distance, boost::shared_ptr<Region> exclude);
 
-	virtual void finalize_split_region (boost::shared_ptr<Region> original, boost::shared_ptr<Region> left, boost::shared_ptr<Region> right) {}
+	virtual void finalize_split_region (boost::shared_ptr<Region> /*original*/, boost::shared_ptr<Region> /*left*/, boost::shared_ptr<Region> /*right*/) {}
 	
-	virtual void check_dependents (boost::shared_ptr<Region> region, bool norefresh) {}
-	virtual void refresh_dependents (boost::shared_ptr<Region> region) {}
-	virtual void remove_dependents (boost::shared_ptr<Region> region) {}
+	virtual void check_dependents (boost::shared_ptr<Region> /*region*/, bool /*norefresh*/) {}
+	virtual void refresh_dependents (boost::shared_ptr<Region> /*region*/) {}
+	virtual void remove_dependents (boost::shared_ptr<Region> /*region*/) {}
 
 	virtual XMLNode& state (bool);
 
diff --git a/libs/ardour/ardour/plugin.h b/libs/ardour/ardour/plugin.h
index f6de29ba41..a1fe25d31d 100644
--- a/libs/ardour/ardour/plugin.h
+++ b/libs/ardour/ardour/plugin.h
@@ -167,12 +167,12 @@ class Plugin : public PBD::StatefulDestructible, public Latent
 	virtual bool reconfigurable_io() const { return false; }
 
 	/* this is only called if reconfigurable_io() returns true */
-	virtual bool configure_io (ChanCount in, ChanCount out) { return true; }
+	virtual bool configure_io (ChanCount /*in*/, ChanCount /*out*/) { return true; }
 
 	/* specific types of plugins can overload this. As of September 2008, only
 	   AUPlugin does this.
 	*/
-	virtual bool can_support_io_configuration (const ChanCount& in, ChanCount& out) const { return false; }
+	virtual bool can_support_io_configuration (const ChanCount& /*in*/, ChanCount& /*out*/) const { return false; }
 	virtual ChanCount output_streams() const;
 	virtual ChanCount input_streams() const;
 
diff --git a/libs/ardour/ardour/port.h b/libs/ardour/ardour/port.h
index 3f86fb8fd2..5ac7cb90ca 100644
--- a/libs/ardour/ardour/port.h
+++ b/libs/ardour/ardour/port.h
@@ -110,7 +110,9 @@ public:
 	virtual void cycle_end (nframes_t) = 0;
 	virtual void cycle_split () = 0;
 	virtual Buffer& get_buffer (nframes_t nframes, nframes_t offset = 0) = 0;
-	virtual void flush_buffers (nframes_t, nframes_t offset = 0) {}
+	virtual void flush_buffers (nframes_t, nframes_t offset = 0) {
+		(void) offset;
+	}
 	
 	static void set_engine (AudioEngine *);
 
diff --git a/libs/ardour/ardour/processor.h b/libs/ardour/ardour/processor.h
index a97dcc4cf7..90a4ab96b4 100644
--- a/libs/ardour/ardour/processor.h
+++ b/libs/ardour/ardour/processor.h
@@ -66,12 +66,12 @@ class Processor : public SessionObject, public AutomatableControls, public Laten
 	
 	virtual nframes_t signal_latency() const { return 0; }
 	
-	virtual void transport_stopped (sframes_t frame) {}
+	virtual void transport_stopped (sframes_t /*frame*/) {}
 	
-	virtual void set_block_size (nframes_t nframes) {}
+	virtual void set_block_size (nframes_t /*nframes*/) {}
 
-	virtual void run (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame, nframes_t nframes) {}
-	virtual void silence (nframes_t nframes) {}
+	virtual void run (BufferSet& /*bufs*/, sframes_t /*start_frame*/, sframes_t /*end_frame*/, nframes_t /*nframes*/) {}
+	virtual void silence (nframes_t /*nframes*/) {}
 	
 	virtual void activate ()   { _pending_active = true; ActiveChanged(); }
 	virtual void deactivate () { _pending_active = false; ActiveChanged(); }
diff --git a/libs/ardour/ardour/region.h b/libs/ardour/ardour/region.h
index d2cc252d61..6a51ae75f5 100644
--- a/libs/ardour/ardour/region.h
+++ b/libs/ardour/ardour/region.h
@@ -250,11 +250,12 @@ class Region
 	void set_last_layer_op (uint64_t when);
 
 	virtual bool is_dependent() const { return false; }
-	virtual bool depends_on (boost::shared_ptr<Region> other) const { return false; }
+	virtual bool depends_on (boost::shared_ptr<Region> /*other*/) const { return false; }
 
 	virtual int exportme (ARDOUR::Session&, ARDOUR::ExportSpecification&) = 0;
 
-	virtual int get_transients (AnalysisFeatureList&, bool force_new = false) { 
+	virtual int get_transients (AnalysisFeatureList&, bool force_new = false) {
+		(void) force_new;
 		// no transients, but its OK
 		return 0;
 	}
diff --git a/libs/ardour/ardour/route.h b/libs/ardour/ardour/route.h
index 8433038aed..9195a50060 100644
--- a/libs/ardour/ardour/route.h
+++ b/libs/ardour/ardour/route.h
@@ -109,7 +109,7 @@ class Route : public SessionObject, public AutomatableControls
 	virtual void toggle_monitor_input ();
 	virtual bool can_record() { return false; }
 
-	virtual void set_record_enable (bool yn, void *src) {}
+	virtual void set_record_enable (bool /*yn*/, void * /*src*/) {}
 	virtual bool record_enabled() const { return false; }
 	virtual void handle_transport_stopped (bool abort, bool did_locate, bool flush_processors);
 	virtual void set_pending_declick (int);
diff --git a/libs/ardour/ardour/route_group_specialized.h b/libs/ardour/ardour/route_group_specialized.h
index b3e50b0869..adf4dfc429 100644
--- a/libs/ardour/ardour/route_group_specialized.h
+++ b/libs/ardour/ardour/route_group_specialized.h
@@ -26,7 +26,7 @@
 namespace ARDOUR {
 
 template<class T> void 
-RouteGroup::apply (void (Track::*func)(T, void *), T val, void *src) 
+RouteGroup::apply (void (Track::*func)(T, void *), T val, void */*src*/) 
 {
 	for (std::list<Route *>::iterator i = routes.begin(); i != routes.end(); i++) {
 		Track *at;
diff --git a/libs/ardour/ardour/session.h b/libs/ardour/ardour/session.h
index 8f70b4723e..5a0e033353 100644
--- a/libs/ardour/ardour/session.h
+++ b/libs/ardour/ardour/session.h
@@ -206,11 +206,11 @@ class Session : public PBD::StatefulDestructible, public boost::noncopyable
 			return e1->before (*e2);
 		}
 
-		void *operator new (size_t ignored) {
+		void *operator new (size_t) {
 			return pool.alloc ();
 		}
 
-		void operator delete(void *ptr, size_t size) {
+		void operator delete (void *ptr, size_t /*size*/) {
 			pool.release (ptr);
 		}
 
@@ -1039,7 +1039,7 @@ class Session : public PBD::StatefulDestructible, public boost::noncopyable
 	uint32_t                _listen_cnt;
 
 	void set_worst_io_latencies ();
-	void set_worst_io_latencies_x (IOChange asifwecare, void *ignored) {
+	void set_worst_io_latencies_x (IOChange, void *) {
 		set_worst_io_latencies ();
 	}
 
@@ -1630,11 +1630,11 @@ class Session : public PBD::StatefulDestructible, public boost::noncopyable
 		Click (nframes_t s, nframes_t d, const Sample *b)
 			: start (s), duration (d), data (b) { offset = 0; }
 
-		void *operator new(size_t ignored) {
+		void *operator new (size_t) {
 			return pool.alloc ();
 		};
 
-		void operator delete(void *ptr, size_t size) {
+		void operator delete(void *ptr, size_t /*size*/) {
 			pool.release (ptr);
 		}
 
diff --git a/libs/ardour/ardour/silentfilesource.h b/libs/ardour/ardour/silentfilesource.h
index c76af3fbcf..dcf7964ac6 100644
--- a/libs/ardour/ardour/silentfilesource.h
+++ b/libs/ardour/ardour/silentfilesource.h
@@ -27,7 +27,7 @@ namespace ARDOUR {
 
 class SilentFileSource : public AudioFileSource {
 public:
-	int update_header (sframes_t when, struct tm&, time_t) { return 0; }
+	int update_header (sframes_t /*when*/, struct tm&, time_t) { return 0; }
 	int flush_header () { return 0; }
 	float sample_rate () const { return _sample_rate; }
 
@@ -47,17 +47,17 @@ protected:
 		_length = len;
 	}
 
-	nframes_t read_unlocked (Sample *dst, sframes_t start, nframes_t cnt) const {
+	nframes_t read_unlocked (Sample *dst, sframes_t /*start*/, nframes_t cnt) const {
 		memset (dst, 0, sizeof (Sample) * cnt);
 		return cnt;
 	}
 
-	nframes_t write_unlocked (Sample *dst, nframes_t cnt) { return 0; }
+	nframes_t write_unlocked (Sample */*dst*/, nframes_t /*cnt*/) { return 0; }
 
 	void set_header_timeline_position () {}
 
- 	int read_peaks_with_fpp (PeakData *peaks, nframes_t npeaks, sframes_t start, nframes_t cnt,
-			double samples_per_unit, nframes_t fpp) const {
+ 	int read_peaks_with_fpp (PeakData *peaks, nframes_t npeaks, sframes_t /*start*/, nframes_t /*cnt*/,
+				 double /*samples_per_unit*/, nframes_t /*fpp*/) const {
 		memset (peaks, 0, sizeof (PeakData) * npeaks);
 		return 0;
 	}
diff --git a/libs/ardour/ardour/slave.h b/libs/ardour/ardour/slave.h
index 283aaf5042..5987151307 100644
--- a/libs/ardour/ardour/slave.h
+++ b/libs/ardour/ardour/slave.h
@@ -165,8 +165,10 @@ class ISlaveSessionProxy {
 	virtual nframes_t frames_since_cycle_start () const   { return 0; }
 	virtual nframes_t frame_time ()               const   { return 0; }
 
-	virtual void request_locate (nframes_t frame, bool with_roll = false) {}
-	virtual void request_transport_speed (double speed)                   {}
+	virtual void request_locate (nframes_t /*frame*/, bool with_roll = false) {
+		(void) with_roll;
+	}
+	virtual void request_transport_speed (double /*speed*/)                   {}
 };
 
 
diff --git a/libs/ardour/ardour/source.h b/libs/ardour/ardour/source.h
index 162f4400a4..968a92a804 100644
--- a/libs/ardour/ardour/source.h
+++ b/libs/ardour/ardour/source.h
@@ -80,7 +80,7 @@ class Source : public SessionObject, public boost::noncopyable
 	
 	bool         destructive() const       { return (_flags & Destructive); }
 	bool         writable () const         { return _flags & Writable; }
-	virtual bool set_destructive (bool yn) { return false; }
+	virtual bool set_destructive (bool /*yn*/) { return false; }
 	virtual bool length_mutable() const    { return false; }
 	
 	void use ()    { _in_use++; }
diff --git a/libs/ardour/ardour/track.h b/libs/ardour/ardour/track.h
index aca7c6f968..c2f69f0b9b 100644
--- a/libs/ardour/ardour/track.h
+++ b/libs/ardour/ardour/track.h
@@ -41,8 +41,8 @@ class Track : public Route
 	bool set_name (const std::string& str);
 
 	TrackMode mode () const { return _mode; }
-	virtual int set_mode (TrackMode m) { return false; }
-	virtual bool can_use_mode (TrackMode m, bool& bounce_required) { return false; }
+	virtual int set_mode (TrackMode /*m*/) { return false; }
+	virtual bool can_use_mode (TrackMode /*m*/, bool& /*bounce_required*/) { return false; }
 	sigc::signal<void> TrackModeChanged;
 	
 	int no_roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame, 
diff --git a/libs/ardour/audio_diskstream.cc b/libs/ardour/audio_diskstream.cc
index d67e48fed4..5c00f10f48 100644
--- a/libs/ardour/audio_diskstream.cc
+++ b/libs/ardour/audio_diskstream.cc
@@ -388,7 +388,7 @@ AudioDiskstream::use_destructive_playlist ()
 }
 
 void
-AudioDiskstream::check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record)
+AudioDiskstream::check_record_status (nframes_t transport_frame, nframes_t /*nframes*/, bool can_record)
 {
 	int possibly_recording;
 	int rolling;
@@ -832,7 +832,7 @@ AudioDiskstream::process_varispeed_playback(nframes_t nframes, boost::shared_ptr
 }
 
 bool
-AudioDiskstream::commit (nframes_t nframes)
+AudioDiskstream::commit (nframes_t /*nframes*/)
 {
 	bool need_butler = false;
 
@@ -1030,7 +1030,7 @@ AudioDiskstream::internal_playback_seek (nframes_t distance)
 
 int
 AudioDiskstream::read (Sample* buf, Sample* mixdown_buffer, float* gain_buffer, nframes_t& start, nframes_t cnt, 
-		       ChannelInfo* channel_info, int channel, bool reversed)
+		       ChannelInfo* /*channel_info*/, int channel, bool reversed)
 {
 	nframes_t this_read = 0;
 	bool reloop = false;
@@ -1364,7 +1364,7 @@ AudioDiskstream::_do_refill (Sample* mixdown_buffer, float* gain_buffer)
  * written at all unless @a force_flush is true.
  */
 int
-AudioDiskstream::do_flush (RunContext context, bool force_flush)
+AudioDiskstream::do_flush (RunContext /*context*/, bool force_flush)
 {
 	uint32_t to_write;
 	int32_t ret = 0;
@@ -1724,7 +1724,7 @@ AudioDiskstream::transport_looped (nframes_t transport_frame)
 }
 
 void
-AudioDiskstream::finish_capture (bool rec_monitors_input, boost::shared_ptr<ChannelList> c)
+AudioDiskstream::finish_capture (bool /*rec_monitors_input*/, boost::shared_ptr<ChannelList> c)
 {
 	was_recording = false;
 	
@@ -2059,7 +2059,7 @@ AudioDiskstream::use_new_write_source (uint32_t n)
 }
 
 void
-AudioDiskstream::reset_write_sources (bool mark_write_complete, bool force)
+AudioDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
 {
 	ChannelList::iterator chan;
 	boost::shared_ptr<ChannelList> c = channels.reader();
@@ -2120,7 +2120,7 @@ AudioDiskstream::rename_write_sources ()
 }
 
 void
-AudioDiskstream::set_block_size (nframes_t nframes)
+AudioDiskstream::set_block_size (nframes_t /*nframes*/)
 {
 	if (_session.get_block_size() > speed_buffer_size) {
 		speed_buffer_size = _session.get_block_size();
diff --git a/libs/ardour/audio_playlist.cc b/libs/ardour/audio_playlist.cc
index 7f89091fdd..93bdc333f1 100644
--- a/libs/ardour/audio_playlist.cc
+++ b/libs/ardour/audio_playlist.cc
@@ -729,7 +729,7 @@ AudioPlaylist::destroy_region (boost::shared_ptr<Region> region)
 }
 
 void
-AudioPlaylist::crossfade_changed (Change ignored)
+AudioPlaylist::crossfade_changed (Change)
 {
 	if (in_flush || in_set_state) {
 		return;
diff --git a/libs/ardour/audio_track.cc b/libs/ardour/audio_track.cc
index aa327e1eba..3c8fe8c42c 100644
--- a/libs/ardour/audio_track.cc
+++ b/libs/ardour/audio_track.cc
@@ -173,7 +173,7 @@ AudioTrack::deprecated_use_diskstream_connections ()
 }
 
 int
-AudioTrack::set_diskstream (boost::shared_ptr<AudioDiskstream> ds, void *src)
+AudioTrack::set_diskstream (boost::shared_ptr<AudioDiskstream> ds, void * /*src*/)
 {
 	_diskstream = ds;
 	_diskstream->set_route (*this);
diff --git a/libs/ardour/audioengine.cc b/libs/ardour/audioengine.cc
index 7533a1ed8f..d9a817cb7b 100644
--- a/libs/ardour/audioengine.cc
+++ b/libs/ardour/audioengine.cc
@@ -123,7 +123,7 @@ AudioEngine::jack() const
 }
 
 void
-_thread_init_callback (void *arg)
+_thread_init_callback (void * /*arg*/)
 {
 	/* make sure that anybody who needs to know about this thread
 	   knows about it.
@@ -217,7 +217,7 @@ AudioEngine::stop (bool forever)
 
 
 bool
-AudioEngine::get_sync_offset (nframes_t& offset) const
+AudioEngine::get_sync_offset (nframes_t& /*offset*/) const
 {
 
 #ifdef HAVE_JACK_VIDEO_SUPPORT
diff --git a/libs/ardour/audiofilesource.cc b/libs/ardour/audiofilesource.cc
index f1a65edc63..705fbc4eab 100644
--- a/libs/ardour/audiofilesource.cc
+++ b/libs/ardour/audiofilesource.cc
@@ -103,7 +103,7 @@ AudioFileSource::AudioFileSource (Session& s, const ustring& path, bool embedded
 
 /** Constructor used for new internal-to-session files. */
 AudioFileSource::AudioFileSource (Session& s, const ustring& path, bool embedded, Source::Flag flags,
-		SampleFormat samp_format, HeaderFormat hdr_format)
+				  SampleFormat /*samp_format*/, HeaderFormat /*hdr_format*/)
 	: Source (s, DataType::AUDIO, path, flags)
 	, AudioSource (s, path)
 	, FileSource (s, DataType::AUDIO, path, embedded, flags)
@@ -307,7 +307,7 @@ AudioFileSource::set_header_position_offset (nframes_t offset)
 }
 
 bool
-AudioFileSource::is_empty (Session& s, ustring path)
+AudioFileSource::is_empty (Session& /*s*/, ustring path)
 {
 	SoundFileInfo info;
 	string err;
diff --git a/libs/ardour/audioregion.cc b/libs/ardour/audioregion.cc
index 5743bae935..89c0c3a3cc 100644
--- a/libs/ardour/audioregion.cc
+++ b/libs/ardour/audioregion.cc
@@ -195,7 +195,7 @@ AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other)
 	assert (_sources.size() == _master_sources.size());
 }
 
-AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, const SourceList& srcs,
+AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, const SourceList& /*srcs*/,
 			  nframes_t length, const string& name, layer_t layer, Flag flags)
 	: Region (other, length, name, layer, flags)
 	, _automatable (other->session())
@@ -373,12 +373,12 @@ AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_bu
 }
 
 nframes_t
-AudioRegion::_read_at (const SourceList& srcs, nframes_t limit,
+AudioRegion::_read_at (const SourceList& /*srcs*/, nframes_t limit,
 		Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
 		sframes_t position, nframes_t cnt, 
 		uint32_t chan_n, 
-		nframes_t read_frames, 
-		nframes_t skip_frames,
+	        nframes_t /*read_frames*/, 
+		nframes_t /*skip_frames*/,
 		ReadOps rops) const
 {
 	nframes_t internal_offset;
@@ -1038,7 +1038,7 @@ AudioRegion::recompute_at_start ()
 }
 
 int
-AudioRegion::separate_by_channel (Session& session, vector<boost::shared_ptr<Region> >& v) const
+AudioRegion::separate_by_channel (Session& /*session*/, vector<boost::shared_ptr<Region> >& v) const
 {
 	SourceList srcs;
 	string new_name;
@@ -1086,7 +1086,7 @@ AudioRegion::read_raw_internal (Sample* buf, sframes_t pos, nframes_t cnt, int c
 }
 
 int
-AudioRegion::exportme (Session& session, ARDOUR::ExportSpecification& spec)
+AudioRegion::exportme (Session& /*session*/, ARDOUR::ExportSpecification& /*spec*/)
 {
 	// TODO EXPORT
 // 	const nframes_t blocksize = 4096;
diff --git a/libs/ardour/audiosource.cc b/libs/ardour/audiosource.cc
index 17c20e05ee..f44628956a 100644
--- a/libs/ardour/audiosource.cc
+++ b/libs/ardour/audiosource.cc
@@ -128,7 +128,7 @@ AudioSource::set_state (const XMLNode& node)
 }
 
 sframes_t
-AudioSource::length (sframes_t pos) const
+AudioSource::length (sframes_t /*pos*/) const
 {
 	return _length;
 }
@@ -264,7 +264,7 @@ AudioSource::initialize_peakfile (bool newfile, ustring audio_path)
 }
 
 nframes_t
-AudioSource::read (Sample *dst, sframes_t start, nframes_t cnt, int channel) const
+AudioSource::read (Sample *dst, sframes_t start, nframes_t cnt, int /*channel*/) const
 {
 	Glib::Mutex::Lock lm (_lock);
 	return read_unlocked (dst, start, cnt);
diff --git a/libs/ardour/auditioner.cc b/libs/ardour/auditioner.cc
index 35a1b70137..4d99e2f5e0 100644
--- a/libs/ardour/auditioner.cc
+++ b/libs/ardour/auditioner.cc
@@ -200,7 +200,7 @@ Auditioner::play_audition (nframes_t nframes)
 }
 
 void
-Auditioner::output_changed (IOChange change, void* src)
+Auditioner::output_changed (IOChange change, void* /*src*/)
 {
 	string phys;
 
diff --git a/libs/ardour/crossfade.cc b/libs/ardour/crossfade.cc
index 006d32508e..2f0d66f8fb 100644
--- a/libs/ardour/crossfade.cc
+++ b/libs/ardour/crossfade.cc
@@ -270,7 +270,7 @@ Crossfade::initialize ()
 }	
 
 nframes_t 
-Crossfade::read_raw_internal (Sample* buf, sframes_t start, nframes_t cnt, int channel) const
+Crossfade::read_raw_internal (Sample* /*buf*/, sframes_t /*start*/, nframes_t cnt, int /*channel*/) const
 {
 	// FIXME: Why is this disabled?
 #if 0
diff --git a/libs/ardour/delivery.cc b/libs/ardour/delivery.cc
index aff082f096..5a7365df96 100644
--- a/libs/ardour/delivery.cc
+++ b/libs/ardour/delivery.cc
@@ -163,7 +163,7 @@ Delivery::display_name () const
 }
 
 void
-Delivery::cycle_start (nframes_t nframes)
+Delivery::cycle_start (nframes_t /*nframes*/)
 {
 	_output_offset = 0;
 	_no_outs_cuz_we_no_monitor = false;
@@ -578,7 +578,7 @@ Delivery::set_name (const std::string& name)
 }
 
 void
-Delivery::output_changed (IOChange change, void* src)
+Delivery::output_changed (IOChange change, void* /*src*/)
 {
 	if (change & ARDOUR::ConfigurationChanged) {
 		reset_panner ();
diff --git a/libs/ardour/diskstream.cc b/libs/ardour/diskstream.cc
index b9638674eb..6b9ecc53fe 100644
--- a/libs/ardour/diskstream.cc
+++ b/libs/ardour/diskstream.cc
@@ -77,7 +77,7 @@ Diskstream::Diskstream (Session &sess, const string &name, Flag flag)
 	init (flag);
 }
 	
-Diskstream::Diskstream (Session& sess, const XMLNode& node)
+Diskstream::Diskstream (Session& sess, const XMLNode& /*node*/)
 	: SessionObject(sess, "unnamed diskstream")
 {
 	init (Recordable);
@@ -145,7 +145,7 @@ Diskstream::set_route (Route& r)
 }
 
 void
-Diskstream::handle_input_change (IOChange change, void *src)
+Diskstream::handle_input_change (IOChange change, void * /*src*/)
 {
 	Glib::Mutex::Lock lm (state_lock);
 
@@ -356,7 +356,7 @@ Diskstream::use_playlist (boost::shared_ptr<Playlist> playlist)
 }
 
 void
-Diskstream::playlist_changed (Change ignored)
+Diskstream::playlist_changed (Change)
 {
 	playlist_modified ();
 }
diff --git a/libs/ardour/export_format_manager.cc b/libs/ardour/export_format_manager.cc
index 924b294583..8b4b9e550f 100644
--- a/libs/ardour/export_format_manager.cc
+++ b/libs/ardour/export_format_manager.cc
@@ -404,7 +404,7 @@ ExportFormatManager::change_dither_type_selection (bool select, WeakDitherTypePt
 }
 
 void
-ExportFormatManager::select_compatibility (WeakCompatPtr const & compat)
+ExportFormatManager::select_compatibility (WeakCompatPtr const & /*compat*/)
 {
 	/* Calculate compatibility intersection for the selection */
 	
diff --git a/libs/ardour/file_source.cc b/libs/ardour/file_source.cc
index 027701be09..dc582a36ee 100644
--- a/libs/ardour/file_source.cc
+++ b/libs/ardour/file_source.cc
@@ -65,7 +65,7 @@ FileSource::FileSource (Session& session, DataType type,
 {
 }
 
-FileSource::FileSource (Session& session, const XMLNode& node, bool must_exist)
+FileSource::FileSource (Session& session, const XMLNode& node, bool /*must_exist*/)
 	: Source(session, node)
 	, _file_is_new(false)
 {
diff --git a/libs/ardour/gain.cc b/libs/ardour/gain.cc
index 62b96d345e..cf38050063 100644
--- a/libs/ardour/gain.cc
+++ b/libs/ardour/gain.cc
@@ -41,21 +41,21 @@ Gain::operator= (const Gain& other)
 }
 
 void
-Gain::fill_linear_volume_fade_in (Gain& gain, nframes_t frames)
+Gain::fill_linear_volume_fade_in (Gain& /*gain*/, nframes_t /*frames*/)
 {
 }
 
 void
-Gain::fill_linear_volume_fade_out (Gain& gain, nframes_t frames)
+Gain::fill_linear_volume_fade_out (Gain& /*gain*/, nframes_t /*frames*/)
 {
 }
 
 void
-Gain::fill_linear_fade_in (Gain& gain, nframes_t frames)
+Gain::fill_linear_fade_in (Gain& /*gain*/, nframes_t /*frames*/)
 {
 }
 
 void
-Gain::fill_linear_fade_out (Gain& gain, nframes_t frames)
+Gain::fill_linear_fade_out (Gain& /*gain*/, nframes_t /*frames*/)
 {
 }
diff --git a/libs/ardour/import.cc b/libs/ardour/import.cc
index 12a7db3659..53da346d91 100644
--- a/libs/ardour/import.cc
+++ b/libs/ardour/import.cc
@@ -191,8 +191,8 @@ get_paths_for_new_sources (const bool allow_replacing, const string& import_file
 }
 
 static bool
-map_existing_mono_sources (const vector<string>& new_paths, Session& sess,
-		           uint samplerate, vector<boost::shared_ptr<Source> >& newfiles, Session *session)
+map_existing_mono_sources (const vector<string>& new_paths, Session& /*sess*/,
+		           uint /*samplerate*/, vector<boost::shared_ptr<Source> >& newfiles, Session *session)
 {
 	for (vector<string>::const_iterator i = new_paths.begin();
 			i != new_paths.end(); ++i)
diff --git a/libs/ardour/internal_return.cc b/libs/ardour/internal_return.cc
index f6c99d8518..807582c379 100644
--- a/libs/ardour/internal_return.cc
+++ b/libs/ardour/internal_return.cc
@@ -44,7 +44,7 @@ InternalReturn::InternalReturn (Session& s, const XMLNode& node)
 }
 
 void
-InternalReturn::run (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame, nframes_t nframes)
+InternalReturn::run (BufferSet& bufs, sframes_t /*start_frame*/, sframes_t /*end_frame*/, nframes_t nframes)
 {
 	if (!_active && !_pending_active) {
 		return;
diff --git a/libs/ardour/interpolation.cc b/libs/ardour/interpolation.cc
index fbe0251471..a5cdf1ce8b 100644
--- a/libs/ardour/interpolation.cc
+++ b/libs/ardour/interpolation.cc
@@ -49,7 +49,7 @@ FixedPointLinearInterpolation::interpolate (int channel, nframes_t nframes, Samp
 }
 
 void 
-FixedPointLinearInterpolation::add_channel_to (int input_buffer_size, int output_buffer_size)
+FixedPointLinearInterpolation::add_channel_to (int /*input_buffer_size*/, int /*output_buffer_size*/)
 {
 	last_phase.push_back (0);
 }
@@ -117,7 +117,7 @@ LinearInterpolation::interpolate (int channel, nframes_t nframes, Sample *input,
 }
 
 void 
-LinearInterpolation::add_channel_to (int input_buffer_size, int output_buffer_size)
+LinearInterpolation::add_channel_to (int /*input_buffer_size*/, int /*output_buffer_size*/)
 {
 	phase.push_back (0.0);
 }
diff --git a/libs/ardour/io.cc b/libs/ardour/io.cc
index 4fb3f915c4..0d7446e852 100644
--- a/libs/ardour/io.cc
+++ b/libs/ardour/io.cc
@@ -354,7 +354,7 @@ IO::disconnect (void* src)
 }
 
 bool
-IO::ensure_ports_locked (ChanCount count, bool clear, void* src)
+IO::ensure_ports_locked (ChanCount count, bool clear, void* /*src*/)
 {
 	Port* port = 0;
 	bool  changed    = false;
@@ -460,7 +460,7 @@ IO::get_state (void)
 }
 
 XMLNode&
-IO::state (bool full_state)
+IO::state (bool /*full_state*/)
 {
 	XMLNode* node = new XMLNode (state_node_name);
 	char buf[64];
@@ -1039,7 +1039,7 @@ IO::enable_connecting ()
 }
 
 void
-IO::bundle_changed (Bundle::Change c)
+IO::bundle_changed (Bundle::Change /*c*/)
 {
 	//XXX
 //	connect_input_ports_to_bundle (_input_bundle, this);
diff --git a/libs/ardour/io_processor.cc b/libs/ardour/io_processor.cc
index ebffd31028..708820cdca 100644
--- a/libs/ardour/io_processor.cc
+++ b/libs/ardour/io_processor.cc
@@ -69,7 +69,7 @@ IOProcessor::IOProcessor (Session& s, bool with_input, bool with_output,
 /* create an IOProcessor that proxies to an existing IO object */
 
 IOProcessor::IOProcessor (Session& s, boost::shared_ptr<IO> in, boost::shared_ptr<IO> out, 
-			  const string& proc_name, DataType dtype)
+			  const string& proc_name, DataType /*dtype*/)
 	: Processor(s, proc_name)
 	, _input (in)
 	, _output (out)
diff --git a/libs/ardour/location.cc b/libs/ardour/location.cc
index 43ffefaae1..b66d0f3942 100644
--- a/libs/ardour/location.cc
+++ b/libs/ardour/location.cc
@@ -654,7 +654,7 @@ Locations::remove (Location *loc)
 }
 
 void
-Locations::location_changed (Location* loc)
+Locations::location_changed (Location* /*loc*/)
 {
 	changed (); /* EMIT SIGNAL */
 }
diff --git a/libs/ardour/lv2_event_buffer.cc b/libs/ardour/lv2_event_buffer.cc
index 6afd395a56..88ecfe1433 100644
--- a/libs/ardour/lv2_event_buffer.cc
+++ b/libs/ardour/lv2_event_buffer.cc
@@ -165,7 +165,7 @@ LV2EventBuffer::append(uint32_t       frames,
  * \return true on success
  */
 bool
-LV2EventBuffer::append(const LV2_Event_Buffer* buf)
+LV2EventBuffer::append(const LV2_Event_Buffer* /*buf*/)
 {
 	uint8_t** data = NULL;
 	bool      ret  = true;
diff --git a/libs/ardour/lv2_plugin.cc b/libs/ardour/lv2_plugin.cc
index 8000bd8e44..32c6fd2929 100644
--- a/libs/ardour/lv2_plugin.cc
+++ b/libs/ardour/lv2_plugin.cc
@@ -325,7 +325,7 @@ LV2Plugin::load_preset(const string uri)
 }
 
 bool
-LV2Plugin::save_preset (string name)
+LV2Plugin::save_preset (string /*name*/)
 {
 	return false;
 }
diff --git a/libs/ardour/meter.cc b/libs/ardour/meter.cc
index e8512aa593..c8546c8ffa 100644
--- a/libs/ardour/meter.cc
+++ b/libs/ardour/meter.cc
@@ -71,7 +71,7 @@ Metering::update_meters()
  * be set to 0.
  */
 void
-PeakMeter::run (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame, nframes_t nframes)
+PeakMeter::run (BufferSet& bufs, sframes_t /*start_frame*/, sframes_t /*end_frame*/, nframes_t nframes)
 {
 	if (!_active && !_pending_active) {
 		return;
diff --git a/libs/ardour/midi_buffer.cc b/libs/ardour/midi_buffer.cc
index 887545c662..ae3071a53c 100644
--- a/libs/ardour/midi_buffer.cc
+++ b/libs/ardour/midi_buffer.cc
@@ -100,7 +100,7 @@ MidiBuffer::read_from (const Buffer& src, nframes_t nframes, nframes_t dst_offse
 }
 
 void
-MidiBuffer::merge_from (const Buffer& src, nframes_t nframes, nframes_t dst_offset, nframes_t src_offset)
+MidiBuffer::merge_from (const Buffer& src, nframes_t /*nframes*/, nframes_t /*dst_offset*/, nframes_t /*src_offset*/)
 {
 	const MidiBuffer* mbuf = dynamic_cast<const MidiBuffer*>(&src);
 	assert (mbuf);
@@ -233,7 +233,7 @@ MidiBuffer::reserve(TimeType time, size_t size)
 
 
 void
-MidiBuffer::silence (nframes_t nframes, nframes_t offset)
+MidiBuffer::silence (nframes_t /*nframes*/, nframes_t /*offset*/)
 {
 	/* XXX iterate over existing events, find all in range given by offset & nframes,
 	   and delete them.
diff --git a/libs/ardour/midi_clock_slave.cc b/libs/ardour/midi_clock_slave.cc
index 0b0c85b01b..1182fed23d 100644
--- a/libs/ardour/midi_clock_slave.cc
+++ b/libs/ardour/midi_clock_slave.cc
@@ -124,7 +124,7 @@ MIDIClock_Slave::calculate_filter_coefficients()
 }
 
 void
-MIDIClock_Slave::update_midi_clock (Parser& parser, nframes_t timestamp)
+MIDIClock_Slave::update_midi_clock (Parser& /*parser*/, nframes_t timestamp)
 {	
 	// some pieces of hardware send MIDI Clock all the time				
 	if ( (!_starting) && (!_started) ) {
@@ -195,7 +195,7 @@ MIDIClock_Slave::update_midi_clock (Parser& parser, nframes_t timestamp)
 }
 
 void
-MIDIClock_Slave::start (Parser& parser, nframes_t timestamp)
+MIDIClock_Slave::start (Parser& /*parser*/, nframes_t /*timestamp*/)
 {	
 	#ifdef DEBUG_MIDI_CLOCK	
 		cerr << "MIDIClock_Slave got start message at time "  <<  timestamp << " engine time: " << session->frame_time() << endl;
@@ -223,7 +223,7 @@ MIDIClock_Slave::reset ()
 }
 
 void
-MIDIClock_Slave::contineu (Parser& parser, nframes_t timestamp)
+MIDIClock_Slave::contineu (Parser& /*parser*/, nframes_t /*timestamp*/)
 {
 	#ifdef DEBUG_MIDI_CLOCK	
 		std::cerr << "MIDIClock_Slave got continue message" << endl;
@@ -236,7 +236,7 @@ MIDIClock_Slave::contineu (Parser& parser, nframes_t timestamp)
 
 
 void
-MIDIClock_Slave::stop (Parser& parser, nframes_t timestamp)
+MIDIClock_Slave::stop (Parser& /*parser*/, nframes_t /*timestamp*/)
 {
 	#ifdef DEBUG_MIDI_CLOCK	
 		std::cerr << "MIDIClock_Slave got stop message" << endl;
@@ -268,7 +268,7 @@ MIDIClock_Slave::stop (Parser& parser, nframes_t timestamp)
 }
 
 void
-MIDIClock_Slave::position (Parser& parser, byte* message, size_t size)
+MIDIClock_Slave::position (Parser& /*parser*/, byte* message, size_t size)
 {
 	// we are note supposed to get position messages while we are running
 	// so lets be robust and ignore those
diff --git a/libs/ardour/midi_diskstream.cc b/libs/ardour/midi_diskstream.cc
index aa6d77b000..29b6ab4a4d 100644
--- a/libs/ardour/midi_diskstream.cc
+++ b/libs/ardour/midi_diskstream.cc
@@ -314,7 +314,7 @@ MidiDiskstream::set_note_mode (NoteMode m)
 }
 
 void
-MidiDiskstream::check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record)
+MidiDiskstream::check_record_status (nframes_t transport_frame, nframes_t /*nframes*/, bool can_record)
 {
 	// FIXME: waaay too much code to duplicate (AudioDiskstream)
 	
@@ -1029,7 +1029,7 @@ MidiDiskstream::do_refill ()
  * written at all unless @a force_flush is true.
  */
 int
-MidiDiskstream::do_flush (RunContext context, bool force_flush)
+MidiDiskstream::do_flush (RunContext /*context*/, bool force_flush)
 {
 	uint32_t to_write;
 	int32_t ret = 0;
@@ -1084,7 +1084,7 @@ out:
 }
 
 void
-MidiDiskstream::transport_stopped (struct tm& when, time_t twhen, bool abort_capture)
+MidiDiskstream::transport_stopped (struct tm& /*when*/, time_t /*twhen*/, bool abort_capture)
 {
 	uint32_t buffer_position;
 	bool more_work = true;
@@ -1257,7 +1257,7 @@ MidiDiskstream::transport_looped (nframes_t transport_frame)
 }
 
 void
-MidiDiskstream::finish_capture (bool rec_monitors_input)
+MidiDiskstream::finish_capture (bool /*rec_monitors_input*/)
 {
 	was_recording = false;
 	
@@ -1547,7 +1547,7 @@ MidiDiskstream::use_new_write_source (uint32_t n)
 }
 
 void
-MidiDiskstream::reset_write_sources (bool mark_write_complete, bool force)
+MidiDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
 {
 	if (!recordable()) {
 		return;
@@ -1575,7 +1575,7 @@ MidiDiskstream::rename_write_sources ()
 }
 
 void
-MidiDiskstream::set_block_size (nframes_t nframes)
+MidiDiskstream::set_block_size (nframes_t /*nframes*/)
 {
 }
 
@@ -1629,7 +1629,7 @@ MidiDiskstream::capture_buffer_load () const
 }
 
 int
-MidiDiskstream::use_pending_capture_data (XMLNode& node)
+MidiDiskstream::use_pending_capture_data (XMLNode& /*node*/)
 {
 	return 0;
 }
diff --git a/libs/ardour/midi_playlist.cc b/libs/ardour/midi_playlist.cc
index 20ee0c2770..8f8b882d1e 100644
--- a/libs/ardour/midi_playlist.cc
+++ b/libs/ardour/midi_playlist.cc
@@ -161,26 +161,26 @@ MidiPlaylist::read (MidiRingBuffer<nframes_t>& dst, nframes_t start, nframes_t d
 
 
 void
-MidiPlaylist::remove_dependents (boost::shared_ptr<Region> region)
+MidiPlaylist::remove_dependents (boost::shared_ptr<Region> /*region*/)
 {
 	/* MIDI regions have no dependents (crossfades) */
 }
 
 
 void
-MidiPlaylist::refresh_dependents (boost::shared_ptr<Region> r)
+MidiPlaylist::refresh_dependents (boost::shared_ptr<Region> /*r*/)
 {
 	/* MIDI regions have no dependents (crossfades) */
 }
 
 void
-MidiPlaylist::finalize_split_region (boost::shared_ptr<Region> original, boost::shared_ptr<Region> left, boost::shared_ptr<Region> right)
+MidiPlaylist::finalize_split_region (boost::shared_ptr<Region> /*original*/, boost::shared_ptr<Region> /*left*/, boost::shared_ptr<Region> /*right*/)
 {
 	/* No MIDI crossfading (yet?), so nothing to do here */
 }
 
 void
-MidiPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
+MidiPlaylist::check_dependents (boost::shared_ptr<Region> /*r*/, bool /*norefresh*/)
 {
 	/* MIDI regions have no dependents (crossfades) */
 }
diff --git a/libs/ardour/midi_port.cc b/libs/ardour/midi_port.cc
index 30084c6718..b07eb84f1b 100644
--- a/libs/ardour/midi_port.cc
+++ b/libs/ardour/midi_port.cc
@@ -96,7 +96,7 @@ MidiPort::get_midi_buffer (nframes_t nframes, nframes_t offset)
 
 	
 void
-MidiPort::cycle_end (nframes_t nframes)
+MidiPort::cycle_end (nframes_t /*nframes*/)
 {
 	_has_been_mixed_down = false;
 }
diff --git a/libs/ardour/midi_region.cc b/libs/ardour/midi_region.cc
index 29357322ea..910789c7fb 100644
--- a/libs/ardour/midi_region.cc
+++ b/libs/ardour/midi_region.cc
@@ -142,7 +142,7 @@ MidiRegion::master_read_at (MidiRingBuffer<nframes_t>& out, sframes_t position,
 }
 
 nframes_t
-MidiRegion::_read_at (const SourceList& srcs, MidiRingBuffer<nframes_t>& dst, nframes_t position, nframes_t dur, uint32_t chan_n, NoteMode mode) const
+MidiRegion::_read_at (const SourceList& /*srcs*/, MidiRingBuffer<nframes_t>& dst, nframes_t position, nframes_t dur, uint32_t chan_n, NoteMode mode) const
 {
 	nframes_t internal_offset = 0;
 	nframes_t src_offset      = 0;
diff --git a/libs/ardour/midi_source.cc b/libs/ardour/midi_source.cc
index 59c19981a5..f16ebf186f 100644
--- a/libs/ardour/midi_source.cc
+++ b/libs/ardour/midi_source.cc
@@ -113,7 +113,7 @@ MidiSource::length (sframes_t pos) const
 }
 
 void
-MidiSource::update_length (sframes_t pos, sframes_t cnt)
+MidiSource::update_length (sframes_t /*pos*/, sframes_t /*cnt*/)
 {
 	// You're not the boss of me!
 }
diff --git a/libs/ardour/midi_track.cc b/libs/ardour/midi_track.cc
index fc106194a2..5a53cecc3c 100644
--- a/libs/ardour/midi_track.cc
+++ b/libs/ardour/midi_track.cc
@@ -448,7 +448,7 @@ MidiTrack::roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame,
 }
 
 void
-MidiTrack::write_controller_messages(MidiBuffer& output_buf, sframes_t start, sframes_t end, nframes_t nframes)
+MidiTrack::write_controller_messages(MidiBuffer& output_buf, sframes_t /*start*/, sframes_t /*end*/, nframes_t nframes)
 {
 	// Append immediate events (UI controls)
 
@@ -458,7 +458,7 @@ MidiTrack::write_controller_messages(MidiBuffer& output_buf, sframes_t start, sf
 }
 
 int
-MidiTrack::export_stuff (BufferSet& bufs, nframes_t nframes, sframes_t end_frame)
+MidiTrack::export_stuff (BufferSet& /*bufs*/, nframes_t /*nframes*/, sframes_t /*end_frame*/)
 {
 	return -1;
 }
@@ -471,7 +471,7 @@ MidiTrack::set_latency_delay (nframes_t longest_session_latency)
 }
 
 boost::shared_ptr<Region>
-MidiTrack::bounce (InterThreadInfo& itt)
+MidiTrack::bounce (InterThreadInfo& /*itt*/)
 {
 	throw;
 	// vector<MidiSource*> srcs;
@@ -481,7 +481,7 @@ MidiTrack::bounce (InterThreadInfo& itt)
 
 
 boost::shared_ptr<Region>
-MidiTrack::bounce_range (nframes_t start, nframes_t end, InterThreadInfo& itt, bool enable_processing)
+MidiTrack::bounce_range (nframes_t /*start*/, nframes_t /*end*/, InterThreadInfo& /*itt*/, bool /*enable_processing*/)
 {
 	throw;
 	//vector<MidiSource*> srcs;
@@ -490,7 +490,7 @@ MidiTrack::bounce_range (nframes_t start, nframes_t end, InterThreadInfo& itt, b
 }
 
 void
-MidiTrack::freeze (InterThreadInfo& itt)
+MidiTrack::freeze (InterThreadInfo& /*itt*/)
 {
 }
 
diff --git a/libs/ardour/mtc_slave.cc b/libs/ardour/mtc_slave.cc
index 91a8531b56..587d6007b3 100644
--- a/libs/ardour/mtc_slave.cc
+++ b/libs/ardour/mtc_slave.cc
@@ -69,7 +69,7 @@ MTC_Slave::rebind (MIDI::Port& p)
 }
 
 void
-MTC_Slave::update_mtc_qtr (Parser& p)
+MTC_Slave::update_mtc_qtr (Parser& /*p*/)
 {
 	cycles_t cnow = get_cycles ();
 	nframes_t now = session.engine().frame_time();
diff --git a/libs/ardour/named_selection.cc b/libs/ardour/named_selection.cc
index eea726cdca..dbb4a8ca4d 100644
--- a/libs/ardour/named_selection.cc
+++ b/libs/ardour/named_selection.cc
@@ -106,7 +106,7 @@ NamedSelection::~NamedSelection ()
 }
 
 int
-NamedSelection::set_state (const XMLNode& node)
+NamedSelection::set_state (const XMLNode& /*node*/)
 {
 	return 0;
 }
diff --git a/libs/ardour/panner.cc b/libs/ardour/panner.cc
index be72f65593..f43741300a 100644
--- a/libs/ardour/panner.cc
+++ b/libs/ardour/panner.cc
@@ -465,7 +465,7 @@ EqualPowerStereoPanner::get_state (void)
 }
 
 XMLNode&
-EqualPowerStereoPanner::state (bool full_state)
+EqualPowerStereoPanner::state (bool /*full_state*/)
 {
 	XMLNode* root = new XMLNode ("StreamPanner");
 	char buf[64];
@@ -623,9 +623,9 @@ Multi2dPanner::distribute (AudioBuffer& srcbuf, BufferSet& obufs, gain_t gain_co
 }
 
 void
-Multi2dPanner::distribute_automated (AudioBuffer& src, BufferSet& obufs, 
-				     nframes_t start, nframes_t end, nframes_t nframes,
-				     pan_t** buffers)
+Multi2dPanner::distribute_automated (AudioBuffer& /*src*/, BufferSet& /*obufs*/, 
+				     nframes_t /*start*/, nframes_t /*end*/, nframes_t /*nframes*/,
+				     pan_t** /*buffers*/)
 {
 	if (_muted) {
 		return;
@@ -643,7 +643,7 @@ Multi2dPanner::factory (Panner& p, Evoral::Parameter param)
 }
 
 int
-Multi2dPanner::load (istream& in, string path, uint32_t& linecnt)
+Multi2dPanner::load (istream& /*in*/, string /*path*/, uint32_t& /*linecnt*/)
 {
 	return 0;
 }
@@ -655,7 +655,7 @@ Multi2dPanner::get_state (void)
 }
 
 XMLNode&
-Multi2dPanner::state (bool full_state)
+Multi2dPanner::state (bool /*full_state*/)
 {
 	XMLNode* root = new XMLNode ("StreamPanner");
 	char buf[64];
diff --git a/libs/ardour/plugin_insert.cc b/libs/ardour/plugin_insert.cc
index 8f7eae5849..1c3b027e52 100644
--- a/libs/ardour/plugin_insert.cc
+++ b/libs/ardour/plugin_insert.cc
@@ -375,7 +375,7 @@ PluginInsert::silence (nframes_t nframes)
 }
 	
 void
-PluginInsert::run (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame, nframes_t nframes)
+PluginInsert::run (BufferSet& bufs, sframes_t /*start_frame*/, sframes_t /*end_frame*/, nframes_t nframes)
 {
 	if (_active || _pending_active) {
 
@@ -633,7 +633,7 @@ PluginInsert::can_support_io_configuration (const ChanCount& in, ChanCount& out)
  * (private helper)
  */
 int32_t
-PluginInsert::count_for_configuration (ChanCount in, ChanCount out) const
+PluginInsert::count_for_configuration (ChanCount in, ChanCount /*out*/) const
 {
 	if (_plugins.front()->reconfigurable_io()) {
 		/* plugin has flexible I/O, so the answer is always 1 */
diff --git a/libs/ardour/plugin_manager.cc b/libs/ardour/plugin_manager.cc
index 8728203794..44974a7199 100644
--- a/libs/ardour/plugin_manager.cc
+++ b/libs/ardour/plugin_manager.cc
@@ -213,7 +213,7 @@ PluginManager::add_ladspa_directory (string path)
 	return -1;
 }
 
-static bool ladspa_filter (const string& str, void *arg)
+static bool ladspa_filter (const string& str, void */*arg*/)
 {
 	/* Not a dotfile, has a prefix before a period, suffix is "so" */
 	
@@ -221,7 +221,7 @@ static bool ladspa_filter (const string& str, void *arg)
 }
 
 int
-PluginManager::ladspa_discover_from_path (string path)
+PluginManager::ladspa_discover_from_path (string /*path*/)
 {
 	PathScanner scanner;
 	vector<string *> *plugin_objects;
@@ -240,7 +240,7 @@ PluginManager::ladspa_discover_from_path (string path)
 	return ret;
 }
 
-static bool rdf_filter (const string &str, void *arg)
+static bool rdf_filter (const string &str, void */*arg*/)
 {
 	return str[0] != '.' && 
 		   ((str.find(".rdf")  == (str.length() - 4)) ||
diff --git a/libs/ardour/region.cc b/libs/ardour/region.cc
index 1754e24b5e..1f90a0761b 100644
--- a/libs/ardour/region.cc
+++ b/libs/ardour/region.cc
@@ -347,7 +347,7 @@ Region::~Region ()
 }
 
 void
-Region::copy_stuff (boost::shared_ptr<const Region> other, nframes_t offset, nframes_t length, const string& name, layer_t layer, Flag flags)
+Region::copy_stuff (boost::shared_ptr<const Region> other, nframes_t /*offset*/, nframes_t length, const string& name, layer_t layer, Flag flags)
 {
 	_frozen = 0;
 	_pending_changed = Change (0);
@@ -429,7 +429,7 @@ Region::set_name (const std::string& str)
 }
 
 void
-Region::set_length (nframes_t len, void *src)
+Region::set_length (nframes_t len, void */*src*/)
 {
 	//cerr << "Region::set_length() len = " << len << endl;
 	if (_flags & Locked) {
@@ -567,7 +567,7 @@ Region::update_position_after_tempo_map_change ()
 }
 
 void
-Region::set_position (nframes_t pos, void *src)
+Region::set_position (nframes_t pos, void */*src*/)
 {
 	if (!can_move()) {
 		return;
@@ -609,7 +609,7 @@ Region::set_position_internal (nframes_t pos, bool allow_bbt_recompute)
 }
 
 void
-Region::set_position_on_top (nframes_t pos, void *src)
+Region::set_position_on_top (nframes_t pos, void */*src*/)
 {
 	if (_flags & Locked) {
 		return;
@@ -645,7 +645,7 @@ Region::recompute_position_from_lock_style ()
 }
 		
 void
-Region::nudge_position (nframes64_t n, void *src)
+Region::nudge_position (nframes64_t n, void */*src*/)
 {
 	if (_flags & Locked) {
 		return;
@@ -684,7 +684,7 @@ Region::set_ancestral_data (nframes64_t s, nframes64_t l, float st, float sh)
 }
 
 void
-Region::set_start (nframes_t pos, void *src)
+Region::set_start (nframes_t pos, void */*src*/)
 {
 	if (_flags & (Locked|PositionLocked)) {
 		return;
@@ -710,7 +710,7 @@ Region::set_start (nframes_t pos, void *src)
 }
 
 void
-Region::trim_start (nframes_t new_position, void *src)
+Region::trim_start (nframes_t new_position, void */*src*/)
 {
 	if (_flags & (Locked|PositionLocked)) {
 		return;
@@ -797,7 +797,7 @@ Region::trim_front (nframes_t new_position, void *src)
 }
 
 void
-Region::trim_end (nframes_t new_endpoint, void *src)
+Region::trim_end (nframes_t new_endpoint, void */*src*/)
 {
 	if (_flags & Locked) {
 		return;
@@ -827,7 +827,7 @@ Region::trim_to (nframes_t position, nframes_t length, void *src)
 }
 
 void
-Region::trim_to_internal (nframes_t position, nframes_t length, void *src)
+Region::trim_to_internal (nframes_t position, nframes_t length, void */*src*/)
 {
 	int32_t start_shift;
 	nframes_t new_start;
@@ -1099,7 +1099,7 @@ Region::set_layer (layer_t l)
 }
 
 XMLNode&
-Region::state (bool full_state)
+Region::state (bool /*full_state*/)
 {
 	XMLNode *node = new XMLNode ("Region");
 	char buf[64];
@@ -1362,7 +1362,7 @@ Region::freeze ()
 }
 
 void
-Region::thaw (const string& why)
+Region::thaw (const string& /*why*/)
 {
 	Change what_changed = Change (0);
 
diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index 26c0cc6616..73323b4aca 100644
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -321,7 +321,7 @@ Route::set_gain (gain_t val, void *src)
 void
 Route::process_output_buffers (BufferSet& bufs,
 			       sframes_t start_frame, sframes_t end_frame, nframes_t nframes,
-			       bool with_processors, int declick)
+			       bool /*with_processors*/, int declick)
 {
 	bool monitor;
 
@@ -1599,7 +1599,7 @@ Route::set_state (const XMLNode& node)
 }
 
 int
-Route::_set_state (const XMLNode& node, bool call_base)
+Route::_set_state (const XMLNode& node, bool /*call_base*/)
 {
 
 	XMLNodeList nlist;
@@ -1958,7 +1958,7 @@ Route::release_return_buffer () const
 }
 
 int
-Route::listen_via (boost::shared_ptr<Route> route, Placement placement, bool active, bool aux)
+Route::listen_via (boost::shared_ptr<Route> route, Placement placement, bool /*active*/, bool aux)
 {
 	vector<string> ports;
 	vector<string>::const_iterator i;
@@ -2103,7 +2103,7 @@ Route::feeds (boost::shared_ptr<Route> other)
 }
 
 void
-Route::handle_transport_stopped (bool abort_ignored, bool did_locate, bool can_flush_processors)
+Route::handle_transport_stopped (bool /*abort_ignored*/, bool did_locate, bool can_flush_processors)
 {
 	nframes_t now = _session.transport_frame();
 
@@ -2129,7 +2129,7 @@ Route::handle_transport_stopped (bool abort_ignored, bool did_locate, bool can_f
 }
 
 void
-Route::input_change_handler (IOChange change, void *src)
+Route::input_change_handler (IOChange change, void * /*src*/)
 {
 	if ((change & ConfigurationChanged)) {
 		configure_processors (0);
@@ -2137,7 +2137,7 @@ Route::input_change_handler (IOChange change, void *src)
 }
 
 void
-Route::output_change_handler (IOChange change, void *src)
+Route::output_change_handler (IOChange change, void * /*src*/)
 {
 	if ((change & ConfigurationChanged)) {
 		
@@ -2159,7 +2159,7 @@ Route::pans_required () const
 
 int 
 Route::no_roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame,  
-		bool session_state_changing, bool can_record, bool rec_monitors_input)
+		bool session_state_changing, bool /*can_record*/, bool /*rec_monitors_input*/)
 {
 	if (n_outputs().n_total() == 0) {
 		return 0;
@@ -2205,7 +2205,7 @@ Route::check_initial_delay (nframes_t nframes, nframes_t& transport_frame)
 
 int
 Route::roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame, int declick,
-	     bool can_record, bool rec_monitors_input)
+	     bool /*can_record*/, bool /*rec_monitors_input*/)
 {
 	{
 		// automation snapshot can also be called from the non-rt context
@@ -2240,8 +2240,8 @@ Route::roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame, int
 }
 
 int
-Route::silent_roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame, 
-		    bool can_record, bool rec_monitors_input)
+Route::silent_roll (nframes_t nframes, sframes_t /*start_frame*/, sframes_t /*end_frame*/, 
+		    bool /*can_record*/, bool /*rec_monitors_input*/)
 {
 	silence (nframes);
 	return 0;
@@ -2497,7 +2497,7 @@ Route::set_pending_declick (int declick)
  */
 
 void
-Route::shift (nframes64_t pos, nframes64_t frames)
+Route::shift (nframes64_t /*pos*/, nframes64_t /*frames*/)
 {
 #ifdef THIS_NEEDS_FIXING_FOR_V3
 
diff --git a/libs/ardour/session.cc b/libs/ardour/session.cc
index 9eb090f02a..ba4e6db37d 100644
--- a/libs/ardour/session.cc
+++ b/libs/ardour/session.cc
@@ -1064,7 +1064,7 @@ Session::set_auto_loop_location (Location* location)
 }
 
 void
-Session::locations_added (Location* ignored)
+Session::locations_added (Location *)
 {
 	set_dirty ();
 }
@@ -1355,7 +1355,7 @@ Session::set_block_size (nframes_t nframes)
 }
 
 void
-Session::set_default_fade (float steepness, float fade_msecs)
+Session::set_default_fade (float /*steepness*/, float /*fade_msecs*/)
 {
 #if 0
 	nframes_t fade_frames;
@@ -2362,13 +2362,13 @@ Session::remove_route (shared_ptr<Route> route)
 }
 
 void
-Session::route_mute_changed (void* src)
+Session::route_mute_changed (void* /*src*/)
 {
 	set_dirty ();
 }
 
 void
-Session::route_listen_changed (void* src, boost::weak_ptr<Route> wpr)
+Session::route_listen_changed (void* /*src*/, boost::weak_ptr<Route> wpr)
 {
 	boost::shared_ptr<Route> route = wpr.lock();
 	if (!route) {
@@ -2384,7 +2384,7 @@ Session::route_listen_changed (void* src, boost::weak_ptr<Route> wpr)
 }
 
 void
-Session::route_solo_changed (void* src, boost::weak_ptr<Route> wpr)
+Session::route_solo_changed (void* /*src*/, boost::weak_ptr<Route> wpr)
 {
 	if (solo_update_disabled) {
 		// We know already
@@ -3810,7 +3810,7 @@ Session::bundle_by_name (string name) const
 }
 
 void
-Session::tempo_map_changed (Change ignored)
+Session::tempo_map_changed (Change)
 {
 	clear_clicks ();
 
@@ -4095,7 +4095,7 @@ Session::freeze (InterThreadInfo& itt)
 
 boost::shared_ptr<Region>
 Session::write_one_track (AudioTrack& track, nframes_t start, nframes_t end, 	
-			  bool overwrite, vector<boost::shared_ptr<Source> >& srcs, 
+			  bool /*overwrite*/, vector<boost::shared_ptr<Source> >& srcs, 
 			  InterThreadInfo& itt, bool enable_processing)
 {
 	boost::shared_ptr<Region> result;
diff --git a/libs/ardour/session_midi.cc b/libs/ardour/session_midi.cc
index 6c0c48f50e..990246aa7c 100644
--- a/libs/ardour/session_midi.cc
+++ b/libs/ardour/session_midi.cc
@@ -249,7 +249,7 @@ Session::set_mmc_port (string port_tag)
 }
 
 int
-Session::set_midi_port (string port_tag)
+Session::set_midi_port (string /*port_tag*/)
 {
 #if 0
 	if (port_tag.length() == 0) {
@@ -492,7 +492,7 @@ Session::setup_midi_control ()
 }
 
 void
-Session::spp_start (Parser& ignored, nframes_t timestamp)
+Session::spp_start (Parser &, nframes_t /*timestamp*/)
 {
 	if (Config->get_mmc_control() && (Config->get_slave_source() != MTC)) {
 		request_transport_speed (1.0);
@@ -506,7 +506,7 @@ Session::spp_continue (Parser& ignored, nframes_t timestamp)
 }
 
 void
-Session::spp_stop (Parser& ignored, nframes_t timestamp)
+Session::spp_stop (Parser&, nframes_t /*timestamp*/)
 {
 	if (Config->get_mmc_control()) {
 		request_stop ();
@@ -537,7 +537,7 @@ Session::midi_clock_stop (Parser& ignored, nframes_t timestamp)
 */
 
 void
-Session::mmc_deferred_play (MIDI::MachineControl &mmc)
+Session::mmc_deferred_play (MIDI::MachineControl &/*mmc*/)
 {
 	if (Config->get_mmc_control() && (Config->get_slave_source() != MTC)) {
 		request_transport_speed (1.0);
@@ -545,7 +545,7 @@ Session::mmc_deferred_play (MIDI::MachineControl &mmc)
 }
 
 void
-Session::mmc_record_pause (MIDI::MachineControl &mmc)
+Session::mmc_record_pause (MIDI::MachineControl &/*mmc*/)
 {
 	if (Config->get_mmc_control()) {
 		maybe_enable_record();
@@ -553,7 +553,7 @@ Session::mmc_record_pause (MIDI::MachineControl &mmc)
 }
 
 void
-Session::mmc_record_strobe (MIDI::MachineControl &mmc)
+Session::mmc_record_strobe (MIDI::MachineControl &/*mmc*/)
 {
 	if (!Config->get_mmc_control())
 		return;
@@ -581,7 +581,7 @@ Session::mmc_record_strobe (MIDI::MachineControl &mmc)
 }
 
 void
-Session::mmc_record_exit (MIDI::MachineControl &mmc)
+Session::mmc_record_exit (MIDI::MachineControl &/*mmc*/)
 {
 	if (Config->get_mmc_control()) {
 		disable_record (false);
@@ -589,7 +589,7 @@ Session::mmc_record_exit (MIDI::MachineControl &mmc)
 }
 
 void
-Session::mmc_stop (MIDI::MachineControl &mmc)
+Session::mmc_stop (MIDI::MachineControl &/*mmc*/)
 {
 	if (Config->get_mmc_control()) {
 		request_stop ();
@@ -597,7 +597,7 @@ Session::mmc_stop (MIDI::MachineControl &mmc)
 }
 
 void
-Session::mmc_pause (MIDI::MachineControl &mmc)
+Session::mmc_pause (MIDI::MachineControl &/*mmc*/)
 {
 	if (Config->get_mmc_control()) {
 
@@ -617,7 +617,7 @@ Session::mmc_pause (MIDI::MachineControl &mmc)
 static bool step_queued = false;
 
 void
-Session::mmc_step (MIDI::MachineControl &mmc, int steps)
+Session::mmc_step (MIDI::MachineControl &/*mmc*/, int steps)
 {
 	if (!Config->get_mmc_control()) {
 		return;
@@ -668,7 +668,7 @@ Session::mmc_step (MIDI::MachineControl &mmc, int steps)
 }
 
 void
-Session::mmc_rewind (MIDI::MachineControl &mmc)
+Session::mmc_rewind (MIDI::MachineControl &/*mmc*/)
 {
 	if (Config->get_mmc_control()) {
 		request_transport_speed(-8.0f);
@@ -676,7 +676,7 @@ Session::mmc_rewind (MIDI::MachineControl &mmc)
 }
 
 void
-Session::mmc_fast_forward (MIDI::MachineControl &mmc)
+Session::mmc_fast_forward (MIDI::MachineControl &/*mmc*/)
 {
 	if (Config->get_mmc_control()) {
 		request_transport_speed(8.0f);
@@ -684,7 +684,7 @@ Session::mmc_fast_forward (MIDI::MachineControl &mmc)
 }
 
 void
-Session::mmc_locate (MIDI::MachineControl &mmc, const MIDI::byte* mmc_tc)
+Session::mmc_locate (MIDI::MachineControl &/*mmc*/, const MIDI::byte* mmc_tc)
 {
 	if (!Config->get_mmc_control()) {
 		return;
@@ -725,7 +725,7 @@ Session::mmc_locate (MIDI::MachineControl &mmc, const MIDI::byte* mmc_tc)
 }
 
 void
-Session::mmc_shuttle (MIDI::MachineControl &mmc, float speed, bool forw)
+Session::mmc_shuttle (MIDI::MachineControl &/*mmc*/, float speed, bool forw)
 {
 	if (!Config->get_mmc_control()) {
 		return;
@@ -778,7 +778,7 @@ Session::change_midi_ports ()
  * the first one with the beginning of this cycle as the new start point.
  */
 int
-Session::send_full_time_code(nframes_t nframes)
+Session::send_full_time_code(nframes_t /*nframes*/)
 {
 	/* This function could easily send at a given frame offset, but would
 	 * that be useful?  Does ardour do sub-block accurate locating? [DR] */
diff --git a/libs/ardour/session_state.cc b/libs/ardour/session_state.cc
index 0946acfade..32ef8f58c5 100644
--- a/libs/ardour/session_state.cc
+++ b/libs/ardour/session_state.cc
@@ -1432,7 +1432,7 @@ Session::XMLRegionFactory (const XMLNode& node, bool full)
 }
 
 boost::shared_ptr<AudioRegion>
-Session::XMLAudioRegionFactory (const XMLNode& node, bool full)
+Session::XMLAudioRegionFactory (const XMLNode& node, bool /*full*/)
 {
 	const XMLProperty* prop;
 	boost::shared_ptr<Source> source;
@@ -1551,7 +1551,7 @@ Session::XMLAudioRegionFactory (const XMLNode& node, bool full)
 }
 
 boost::shared_ptr<MidiRegion>
-Session::XMLMidiRegionFactory (const XMLNode& node, bool full)
+Session::XMLMidiRegionFactory (const XMLNode& node, bool /*full*/)
 {
 	const XMLProperty* prop;
 	boost::shared_ptr<Source> source;
@@ -2061,7 +2061,7 @@ Session::auto_save()
 }
 
 static bool
-state_file_filter (const string &str, void *arg)
+state_file_filter (const string &str, void */*arg*/)
 {
 	return (str.length() > strlen(statefile_suffix) &&
 		str.find (statefile_suffix) == (str.length() - strlen (statefile_suffix)));
@@ -2266,13 +2266,13 @@ Session::set_global_record_enable (GlobalRouteBooleanState s, void* src)
 }
 
 static bool
-accept_all_non_peak_files (const string& path, void *arg)
+accept_all_non_peak_files (const string& path, void */*arg*/)
 {
 	return (path.length() > 5 && path.find (peakfile_suffix) != (path.length() - 5));
 }
 
 static bool
-accept_all_state_files (const string& path, void *arg)
+accept_all_state_files (const string& path, void */*arg*/)
 {
 	return (path.length() > 7 && path.find (".ardour") == (path.length() - 7));
 }
diff --git a/libs/ardour/session_time.cc b/libs/ardour/session_time.cc
index 3126287c6b..0363c48339 100644
--- a/libs/ardour/session_time.cc
+++ b/libs/ardour/session_time.cc
@@ -485,10 +485,10 @@ Session::jack_sync_callback (jack_transport_state_t state,
 }
 
 void
-Session::jack_timebase_callback (jack_transport_state_t state,
-				 nframes_t nframes,
+Session::jack_timebase_callback (jack_transport_state_t /*state*/,
+				 nframes_t /*nframes*/,
 				 jack_position_t* pos,
-				 int new_position)
+				 int /*new_position*/)
 {
 	BBT_Time bbt;
 
@@ -565,7 +565,7 @@ Session::jack_timebase_callback (jack_transport_state_t state,
 }
 
 ARDOUR::nframes_t
-Session::convert_to_frames_at (nframes_t position, AnyTime const & any)
+Session::convert_to_frames_at (nframes_t /*position*/, AnyTime const & any)
 {
 	double secs;
 	
diff --git a/libs/ardour/sndfileimportable.cc b/libs/ardour/sndfileimportable.cc
index 71d3342dbc..3328eddb23 100644
--- a/libs/ardour/sndfileimportable.cc
+++ b/libs/ardour/sndfileimportable.cc
@@ -42,7 +42,7 @@ SndFileImportableSource::samplerate() const
 }
 
 void
-SndFileImportableSource::seek (nframes_t pos)
+SndFileImportableSource::seek (nframes_t /*pos*/)
 {
 	sf_seek (in.get(), 0, SEEK_SET);
 }
diff --git a/libs/ardour/sndfilesource.cc b/libs/ardour/sndfilesource.cc
index df35dbe387..f84c0ae14b 100644
--- a/libs/ardour/sndfilesource.cc
+++ b/libs/ardour/sndfilesource.cc
@@ -512,7 +512,7 @@ SndFileSource::flush_header ()
 }
 
 int
-SndFileSource::setup_broadcast_info (sframes_t when, struct tm& now, time_t tnow)
+SndFileSource::setup_broadcast_info (sframes_t /*when*/, struct tm& now, time_t /*tnow*/)
 {
 	if (!writable()) {
 		warning << string_compose (_("attempt to store broadcast info in a non-writable audio file source (%1)"), _path) << endmsg;
diff --git a/libs/ardour/template_utils.cc b/libs/ardour/template_utils.cc
index daf133fa05..a0daca713d 100644
--- a/libs/ardour/template_utils.cc
+++ b/libs/ardour/template_utils.cc
@@ -64,7 +64,7 @@ user_route_template_directory ()
 }
 
 static bool
-template_filter (const string &str, void *arg)
+template_filter (const string &str, void */*arg*/)
 {
 	cerr << "Checking into " << str << " using " << template_suffix << endl;
 	return (str.length() > strlen(template_suffix) &&
diff --git a/libs/ardour/ticker.cc b/libs/ardour/ticker.cc
index 4fe8fab520..e55474588a 100644
--- a/libs/ardour/ticker.cc
+++ b/libs/ardour/ticker.cc
@@ -119,7 +119,7 @@ void MidiClockTicker::transport_looped()
 	_last_tick = loop_location->start() - elapsed_since_last_tick;
 }
 
-void MidiClockTicker::tick(const nframes_t& transport_frames, const BBT_Time& transport_bbt, const SMPTE::Time& transport_smpt)
+void MidiClockTicker::tick(const nframes_t& transport_frames, const BBT_Time& /*transport_bbt*/, const SMPTE::Time& /*transport_smpt*/)
 {
 #ifdef WITH_JACK_MIDI
 	if (!Config->get_send_midi_clock() || _session == 0 || _session->transport_speed() != 1.0f)
diff --git a/libs/ardour/track.cc b/libs/ardour/track.cc
index 5ff79098d8..64ec77b683 100644
--- a/libs/ardour/track.cc
+++ b/libs/ardour/track.cc
@@ -235,7 +235,7 @@ Track::zero_diskstream_id_in_xml (XMLNode& node)
 
 int 
 Track::no_roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame, 
-		bool session_state_changing, bool can_record, bool rec_monitors_input)
+		bool session_state_changing, bool can_record, bool /*rec_monitors_input*/)
 {
 	if (n_outputs().n_total() == 0) {
 		return 0;
@@ -320,7 +320,7 @@ Track::no_roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame,
 }
 
 int
-Track::silent_roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame,  
+Track::silent_roll (nframes_t nframes, sframes_t /*start_frame*/, sframes_t /*end_frame*/,  
 		    bool can_record, bool rec_monitors_input)
 {
 	if (n_outputs().n_total() == 0 && _processors.empty()) {
diff --git a/libs/ardour/uri_map.cc b/libs/ardour/uri_map.cc
index fc82255ef8..82869de134 100644
--- a/libs/ardour/uri_map.cc
+++ b/libs/ardour/uri_map.cc
@@ -46,7 +46,7 @@ URIMap::uri_to_id(const char* map,
 
 uint32_t
 URIMap::uri_map_uri_to_id(LV2_URI_Map_Callback_Data callback_data,
-                          const char*               map,
+                          const char*               /*map*/,
                           const char*               uri)
 {
 	// TODO: map ignored, < UINT16_MAX assumed