option('disable-mtab', type : 'boolean', value : false, description: 'Disable and ignore usage of /etc/mtab') option('udevrulesdir', type : 'string', value : '', description: 'Where to install udev rules (if empty, query pkg-config(1))') option('utils', type : 'boolean', value : true, description: 'Whether or not to build and install helper programs') option('examples', type : 'boolean', value : true, description: 'Whether or not to build example programs') option('useroot', type : 'boolean', value : true, description: 'Set owner and setuid bits on installed files')