optional_depends  "libungif" "--with-gif" "" "for gif support if you use faces"         &&
optional_depends  "jpeg" "--with-jpeg" "" "for jpeg support if you use faces"           &&
optional_depends  "tiff" "--with-tiff" "" "for tiff support if you use faces"           &&
optional_depends  "libpng" "--with-png" "" "for png support if you use faces"           &&
optional_depends  "xfree86" "--with-x --with-xpm" "" "for xpm support if you
use faces"	&&
optional_depends  "gtk+-2"  "--with-gtk" "" "for a GTK2 user interface"
