for(PackageList::const_iterator i=reqs.begin(); i!=reqs.end(); ++i)
if((*i)->get_use_pkgconfig())
IO::print(out, " %s", (*i)->get_name());
out.put('\n');
for(PackageList::const_iterator i=reqs.begin(); i!=reqs.end(); ++i)
if((*i)->get_use_pkgconfig())
IO::print(out, " %s", (*i)->get_name());
out.put('\n');