option('cheese', type: 'boolean', value: true, description: 'Enable cheese webcam support.')
option('telepathy', type: 'boolean', value: true, description: 'Enable Telepathy call/chat support.')
option('manpage', type: 'boolean', value: true, description: 'Enable building man pages.')
option('docs', type: 'boolean', value: false, description: 'Whether to build the valadoc docs.')