+
+void Target::check_rebuild()
+{
+ if(!buildable)
+ return;
+
+ if(!mtime)
+ mark_rebuild("Does not exist");
+ else
+ {
+ for(list<Target *>::iterator i=depends.begin(); (i!=depends.end() && !rebuild); ++i)
+ {
+ if((*i)->get_virtual_mtime()>mtime)
+ mark_rebuild((*i)->get_name()+" has changed");
+ else if((*i)->get_rebuild())
+ mark_rebuild((*i)->get_name()+" needs rebuilding");
+ }
+ }
+}
+
+Action *Target::build(Action *action)
+{
+ building=true;
+ action->signal_done.connect(sigc::mem_fun(this, &Target::build_done));
+ return action;
+}
+
+void Target::build_done()
+{
+ building=false;
+ rebuild=false;
+}