+void Target::prepare()
+{
+ if(prepared)
+ return;
+ if(preparing)
+ {
+ builder.problem((package ? package->get_name() : string()), "Dependency cycle detected at "+name);
+ return;
+ }
+
+ preparing = true;
+ for(TargetList::iterator i=depends.begin(); i!=depends.end(); ++i)
+ (*i)->prepare();
+
+ check_rebuild();
+ preparing = false;
+ prepared = true;
+}
+
+Action *Target::build()
+{
+ if(!buildable)
+ {
+ rebuild = false;
+ return 0;
+ }
+
+ // XXX Minor breach of OO here
+ if(FileTarget *ft = dynamic_cast<FileTarget *>(this))
+ if(!builder.get_dry_run() && FS::exists(ft->get_path()))
+ FS::unlink(ft->get_path());
+
+ Action *action = create_action();
+ if(action)
+ {
+ action->signal_done.connect(sigc::mem_fun(this, &Target::build_done));
+
+ building = true;
+ }
+
+ return action;
+}