case $THIS_SUB_DEPENDS in
MONO) echo "mono bindings requested, forcing them."  &&
        depends  mono  '--enable-mono'
        ;;
QT5)  echo "qt5 bindings requested, forcing them."  &&
        depends  qtbase  '--enable-qt5'
        ;;
GTK2) echo "gtk+2 bindings requested, forcing them."  &&
        depends  gtk+2 '--enable-gtk'
        ;;
GTK3) echo "gtk+3 bindings requested, forcing them."  &&
        depends  gtk+3 '--enable-gtk3'
        ;;
COMPAT_LIBDNS_SD) echo "libdns_sd compatibility layer requested, forcing it."  &&
        AVAHI_COMPAT_LIBDNS_SD=y
        ;;
COMPAT_HOWL) echo "Howl compatibility layer requested, forcing it."  &&
        AVAHI_COMPAT_HOWL=y
        ;;
   *) echo "unknown sub-depends!"; return 1;;
esac
