Hi I've made a patch for jack-rack so it can be built with -DGSEAL in the CFLAGS: GSEAL explained here: http://live.gnome.org/GnomeGoals/UseGseal i made the changes to a clone of the jack-rack git source.... which fails to build.... ok, there's one area in main.c i had to cheat to get it to build, and that's the gnome_program_init line, specifically the LIBGNOMEUI_MODULE #define... Which is #defined in <libgnomeui/libgnomeui.h>.... Which includes/uses deprecated GTK symbols, namely GtkCallbackMarshal, which is due to the CFLAGS (GTK_DISABLE_DEPRECATED etc) used, is an unknown type. I don't know how to fix that error as I don't know gnome. If you look at the patch you'll notice I've removed the libgnomeui includes from other c files as they weren't used. The error here is in libgnomeui using gtk deprecated types. but --disable-gnome fixes that kind of problem (git). if the list refuses the attachment: http://jwm-art.net/code/jack-rack-gtk_deprecated_fix.patch cheers, james.