option('bundle', type : 'boolean', value : false, description: 'Build a macOS bundle') option('source-only', type : 'boolean', value : false, description: 'Configure source files only, doesn\'t checks for dependencies') option('portable', type : 'boolean', value : false, description: 'Portable install') option('renderer', type : 'boolean', value : false, description: 'Use SDL renderer') option('dirmonitor_backend', type : 'combo', value : '', choices : ['', 'inotify', 'kqueue', 'win32', 'dummy'], description: 'define what dirmonitor backend to use')