247     tree.define< config::strings_set_node >("allowed_architectures");  in init_tree()
248     tree.define< config::strings_set_node >("allowed_platforms");  in init_tree()
255     tree.define< config::strings_set_node >("required_configs");  in init_tree()
271     tree.set< config::strings_set_node >("allowed_architectures",  in set_defaults()
273     tree.set< config::strings_set_node >("allowed_platforms",  in set_defaults()
280     tree.set< config::strings_set_node >("required_configs",  in set_defaults()
423         return _pimpl->props.lookup< config::strings_set_node >(  in allowed_architectures()
426         return get_defaults().lookup< config::strings_set_node >(  in allowed_architectures()
439         return _pimpl->props.lookup< config::strings_set_node >(  in allowed_platforms()
442         return get_defaults().lookup< config::strings_set_node >(  in allowed_platforms()
549         return _pimpl->props.lookup< config::strings_set_node >(  in required_configs()
552         return get_defaults().lookup< config::strings_set_node >(  in required_configs()
762         _pimpl->props.set< config::strings_set_node >(  in add_allowed_architecture()
764             get_defaults().lookup< config::strings_set_node >(  in add_allowed_architecture()
767     lookup_rw< config::strings_set_node >(  in add_allowed_architecture()
784         _pimpl->props.set< config::strings_set_node >(  in add_allowed_platform()
786             get_defaults().lookup< config::strings_set_node >(  in add_allowed_platform()
789     lookup_rw< config::strings_set_node >(  in add_allowed_platform()
823         _pimpl->props.set< config::strings_set_node >(  in add_required_config()
825             get_defaults().lookup< config::strings_set_node >(  in add_required_config()
828     lookup_rw< config::strings_set_node >(  in add_required_config()
886     set< config::strings_set_node >(_pimpl->props, "allowed_architectures", as);  in set_allowed_architectures()
901     set< config::strings_set_node >(_pimpl->props, "allowed_platforms", ps);  in set_allowed_platforms()
1009     set< config::strings_set_node >(_pimpl->props, "required_configs", vars);  in set_required_configs()