option('session_tracking', type: 'combo', choices: ['libsystemd-login', 'libelogind', 'ConsoleKit'], value: 'ConsoleKit', description: 'session tracking (libsystemd-login/libelogind/ConsoleKit)')
option('systemdsystemunitdir', type: 'string', value: '', description: 'custom directory for systemd system units')

option('libs-only', type: 'boolean', value: false, description: 'Only build libraries (skips building polkitd)')
option('polkitd_user', type: 'string', value: 'polkitd', description: 'User for running polkitd (polkitd)')

option('authfw', type: 'combo', choices: ['pam', 'shadow', 'bsdauth'], value: 'pam', description: 'Authentication framework (pam/shadow)')
option('os_type', type: 'combo', choices: ['redhat', 'suse', 'gentoo', 'pardus', 'solaris', 'netbsd', 'lfs', ''], value: '', description: 'distribution or OS')

option('pam_include', type: 'string', value: '', description: 'pam file to include')
option('pam_module_dir', type: 'string', value: '', description: 'directory to install PAM security module')
option('pam_prefix', type: 'string', value: '', description: 'specify where pam files go')

option('examples', type: 'boolean', value: false, description: 'Build example programs')
option('tests', type: 'boolean', value: false, description: 'Build tests')
option('introspection', type: 'boolean', value: true, description: 'Enable introspection for this build')

option('gtk_doc', type: 'boolean', value: false, description: 'use gtk-doc to build documentation')
option('man', type: 'boolean', value: false, description: 'build manual pages')
option('js_engine', type: 'combo', choices: ['mozjs', 'duktape'], value: 'duktape', description: 'javascript engine')