+ return fail?1:0;
+}
+
+/**
+Cleans buildable targets. If clean is 1, cleans only this package. If
+clean is 2 or greater, cleans all buildable packages.
+*/
+int Builder::do_clean()
+{
+ // Cleaning doesn't care about ordering, so a simpler method can be used
+
+ set<Target *> clean_tgts;
+ TargetList queue;
+ queue.push_back(get_target("cmdline"));
+
+ while(!queue.empty())
+ {
+ Target *tgt=queue.front();
+ queue.erase(queue.begin());
+
+ if(tgt->get_buildable() && (tgt->get_package()==default_pkg || clean>=2))
+ clean_tgts.insert(tgt);
+
+ const TargetList &deps=tgt->get_depends();
+ for(TargetList::const_iterator i=deps.begin(); i!=deps.end(); ++i)
+ if(!clean_tgts.count(*i))
+ queue.push_back(*i);
+ }
+
+ for(set<Target *>::iterator i=clean_tgts.begin(); i!=clean_tgts.end(); ++i)
+ {
+ Action *action=new Unlink(*this, **i);
+ while(action->check()<0);
+ delete action;
+ }
+
+ return 0;