- Add a proxy method to access protected IO::connecting_legal field from

Session::add_routes(); no idea why it worked before with GCC 4.2
- Switch from using non-standard STL slist container (which is not available
  with libc++) to the one provided by boost::container::slist, it allows to
  build Ardour on all supported FreeBSD versions/compilers
- Fix remaining cases of boost::shared_ptr to fix the build against Clang

audio/ardour/files/patch-gtk2_ardour-connection_editor.cc

@@ -0,0 +1,23 @@
+--- gtk2_ardour/connection_editor.cc.orig
++++ gtk2_ardour/connection_editor.cc
+@@ -502,9 +502,9 @@ ConnectionEditor::display_connection_sta
+ 	frame_label += _("\"");
+ 	port_frame.set_label (frame_label);
+ 
+-	for (slist<ScrolledWindow *>::iterator i = port_displays.begin(); i != port_displays.end(); ) {
++	for (boost::container::slist<ScrolledWindow *>::iterator i = port_displays.begin(); i != port_displays.end(); ) {
+ 		
+-		slist<ScrolledWindow *>::iterator tmp;
++		boost::container::slist<ScrolledWindow *>::iterator tmp;
+ 
+ 		tmp = i;
+ 		tmp++;
+@@ -612,7 +612,7 @@ ConnectionEditor::connection_port_button
+ 
+ 		tview->set_name ("ConnectionEditorPortListSelected");
+ 
+-		for (slist<ScrolledWindow *>::iterator i = port_displays.begin(); i != port_displays.end(); ++i) {
++		for (boost::container::slist<ScrolledWindow *>::iterator i = port_displays.begin(); i != port_displays.end(); ++i) {
+ 
+ 			Widget *child = (*i)->get_child();
+ 

audio/ardour/files/patch-gtk2_ardour-connection_editor.h

@@ -0,0 +1,25 @@
+--- gtk2_ardour/connection_editor.h.orig
++++ gtk2_ardour/connection_editor.h
+@@ -20,12 +20,7 @@
+ #ifndef __ardour_gtk_connection_editor_h__
+ #define __ardour_gtk_connection_editor_h__
+ 
+-#if __GNUC__ >= 3
+-#include <ext/slist>
+-using __gnu_cxx::slist;
+-#else
+-#include <slist.h>
+-#endif
++#include <boost/container/slist.hpp>
+ 
+ #include <gtkmm/box.h>
+ #include <gtkmm/window.h>
+@@ -116,7 +111,7 @@ class ConnectionEditor : public ArdourDi
+ 	Gtk::Button add_port_button;
+ 
+ 	Glib::Mutex port_display_lock;
+-	slist<Gtk::ScrolledWindow *> port_displays;
++	boost::container::slist<Gtk::ScrolledWindow *> port_displays;
+ 
+ 	Gtk::Button ok_button;
+ 	Gtk::Button cancel_button;

audio/ardour/files/patch-gtk2_ardour-io_selector.cc

@@ -0,0 +1,39 @@
+--- gtk2_ardour/io_selector.cc.orig
++++ gtk2_ardour/io_selector.cc
+@@ -389,9 +389,9 @@ IOSelector::display_ports ()
+ 			limit = io->n_outputs();
+ 		}
+ 		
+-		for (slist<TreeView *>::iterator i = port_displays.begin(); i != port_displays.end(); ) {
++		for (boost::container::slist<TreeView *>::iterator i = port_displays.begin(); i != port_displays.end(); ) {
+ 			
+-			slist<TreeView *>::iterator tmp;
++			boost::container::slist<TreeView *>::iterator tmp;
+ 			
+ 			tmp = i;
+ 			++tmp;
+@@ -632,13 +632,13 @@ IOSelector::connection_button_release (G
+ void
+ IOSelector::select_next_treeview ()
+ {
+-	slist<TreeView*>::iterator next;
++	boost::container::slist<TreeView*>::iterator next;
+ 
+ 	if (port_displays.empty() || port_displays.size() == 1) {
+ 		return;
+ 	}
+ 
+-	for (slist<TreeView *>::iterator i = port_displays.begin(); i != port_displays.end(); ++i) {
++	for (boost::container::slist<TreeView *>::iterator i = port_displays.begin(); i != port_displays.end(); ++i) {
+ 
+ 		if ((*i)->get_name() == "IOSelectorPortListSelected") {
+ 
+@@ -681,7 +681,7 @@ IOSelector::select_treeview (TreeView* t
+ 		gtk_widget_queue_draw (ccol->button);
+ 	}
+ 
+-	for (slist<TreeView*>::iterator i = port_displays.begin(); i != port_displays.end(); ++i) {
++	for (boost::container::slist<TreeView*>::iterator i = port_displays.begin(); i != port_displays.end(); ++i) {
+ 		if (*i == tview) {
+ 			continue;
+ 		}

audio/ardour/files/patch-gtk2_ardour-io_selector.h

@@ -0,0 +1,25 @@
+--- gtk2_ardour/io_selector.h.orig
++++ gtk2_ardour/io_selector.h
+@@ -20,12 +20,7 @@
+ #ifndef __ardour_ui_io_selector_h__
+ #define __ardour_ui_io_selector_h__
+ 
+-#if __GNUC__ >= 3
+-#include <ext/slist>
+-using __gnu_cxx::slist;
+-#else
+-#include <slist.h>
+-#endif
++#include <boost/container/slist.hpp>
+ 
+ #include <string>
+ 
+@@ -110,7 +105,7 @@ class IOSelector : public Gtk::VBox {
+ 	Gtk::ScrolledWindow port_display_scroller;
+ 
+ 	Glib::Mutex port_display_lock;
+-	slist<Gtk::TreeView *> port_displays;
++	boost::container::slist<Gtk::TreeView *> port_displays;
+ 	void display_ports ();
+ 
+ 	void rescan ();

audio/ardour/files/patch-libs-ardour-ardour-io.h

@@ -0,0 +1,13 @@
+--- libs/ardour/ardour/io.h.orig
++++ libs/ardour/ardour/io.h
+@@ -288,6 +288,10 @@ class IO : public PBD::StatefulDestructi
+ 	XMLNode *pending_state_node;
+ 	int ports_became_legal ();
+ 
++	static bool connecting_is_legal() {
++		return connecting_legal;
++	}
++
+   private:
+ 	mutable Glib::Mutex io_lock;
+ 

audio/ardour/files/patch-libs-ardour-session.cc

@@ -162,6 +162,15 @@
  		r->insert (r->end(), new_routes.begin(), new_routes.end());
  		resort_routes_using (r);
  	}
+@@ -2150,7 +2149,7 @@ Session::add_routes (RouteList& new_rout
+ 		} 
+ 	}
+ 
+-	if (_control_out && IO::connecting_legal) {
++	if (_control_out && IO::connecting_is_legal()) {
+ 
+ 		vector<string> cports;
+ 		uint32_t ni = _control_out->n_inputs();
 @@ -2198,14 +2197,14 @@ Session::add_diskstream (boost::shared_p
  }
  

audio/ardour/files/patch-libs-surfaces-mackie-mackie_control_protocol.cc

@@ -0,0 +1,29 @@
+--- libs/surfaces/mackie/mackie_control_protocol.cc.orig
++++ libs/surfaces/mackie/mackie_control_protocol.cc
+@@ -64,8 +64,6 @@ using namespace sigc;
+ using namespace Mackie;
+ using namespace PBD;
+ 
+-using boost::shared_ptr;
+-
+ #include "i18n.h"
+ 
+ MackieMidiBuilder builder;
+@@ -200,7 +198,7 @@ MackieControlProtocol::port_for_id( uint
+ // predicate for sort call in get_sorted_routes
+ struct RouteByRemoteId
+ {
+-	bool operator () ( const shared_ptr<Route> & a, const shared_ptr<Route> & b ) const {
++	bool operator () ( const boost::shared_ptr<Route> & a, const boost::shared_ptr<Route> & b ) const {
+ 		return a->remote_control_id() < b->remote_control_id();
+ 	}
+ 
+@@ -680,7 +678,7 @@ MackieControlProtocol::create_ports()
+ 	}
+ }
+ 
+-shared_ptr<Route>
++boost::shared_ptr<Route>
+ MackieControlProtocol::master_route()
+ {
+ 	boost::shared_ptr<IO> mo = session->master_out ();