option('gtk_doc', type: 'boolean', value: false, description: 'Enable generating the API reference (depends on GTK-Doc)') option('sniffer', type: 'boolean', value: true, description: 'Compile graphical SSDP sniffer') option('introspection', type: 'boolean', value : true, description: 'Enable or disable GObject Introspection') option('vapi', type: 'boolean', value: true, description: 'Enable or disable generation of Vala vapi file') option('examples', type: 'boolean', value: true, description : 'Enable or disable examples') option('manpages', type: 'boolean', value: true, description : 'Generate man page for tools')