depends gupnp && optional_depends gtk-doc '--enable-gtk-doc' '--disable-gtk-doc' \ 'for documentation generation' && if is_depends_enabled $SPELL gtk-doc ; then config_query_option GUPNPAV_HTML \ 'build html docs?' y \ '--enable-gtk-doc-html' \ '--disable-gtk-doc-html' && config_query_option GUPNPAV_PDF \ 'build html docs?' n \ '--enable-gtk-doc-pdf' \ '--disable-gtk-doc-pdf' fi