optional_depends CONSOLE-MANAGER --{en,dis}able-consolekit 'Console kit support' &&
optional_depends GETTEXT --{en,dis}able-nls 'NLS support' &&
optional_depends gtk+3 '--enable-gtk3' '--disable-gtk3' \
                       'Use GTK+3 instead of GTK+2' &&
if ! is_depends_enabled $SPELL gtk+3; then depends gtk+2; fi &&
optional_depends linux-pam '--with-pam' '--without-pam' 'For PAM support' &&
optional_depends xauth '' '--disable-xauth' 'For XAUTH support' &&
optional_depends libxcb '--with-xconn=xcb' '--with-xconn=xlib' 'Use XCB instead of xlib'
