Thank you for telling us about your success! João> I didn't asked for help with Ubuntu, But you did! You may not have known it, but you did ask for help with Ubuntu. For one thing, note who gave you an "off the top of his head" answer: someone who had used Ubuntu. João> I just asked for help to know what library was missing, and Actually, you didn't. You wrote "But when I do the make instrution I have the follow error: [...] Can you help?" That leaves it up to us (many of us! at least five that I know of) to read through the error messages, figure out that the reason that the compilation stopped was a missing include file, and then we're stuck. The answer that we have (if we aren't Ubuntu users, and very few of us are) is "Please go to www.x.org and download 50MB of tarballs. It's in there, somewhere." You see, the X11 source distribution includes all that stuff, standard. It is OS distributions like Ubuntu, Mandriva (to mention the two most prolific sources of problems first), Red Hat, Debian, SuSE, and so on that break the complete X11 distribution down into itty bitty pieces. The particular breakdown is specific to the OS distribution; if we don't use it, we won't have a clue what they omitted. And it's often the case that it's not just one, and there's often no single "virtual package" that will pull in everything you need. In general, if you have a problem with *building* the *stable* version of the software, it's probably a problem with your environment. Ask on the OS-specific channels, or on comp.emacs.xemacs, because you're far more likely to meet other users with the same environment. And they are likely to know the trivial answer. If that doesn't help, then you should come to the developer list. If the software *crashes* or *destroys your data*, on the other hand, it's probably a problem with the software, and the developer list is the right place to ask. João> I tried to look before in the internet but I didn't found, To get more sympathy from more people, say that in your first post; altogether too many people do not look. You'd hope it would go without saying, but it doesn't. Also, it helps us to help you if we know what you've looked for and what you've tried. Again, thanks for letting us know that it worked for you. Sincerely yours, -- School of Systems and Information Engineering http://turnbull.sk.tsukuba.ac.jp University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8573 JAPAN Ask not how you can "do" free software business; ask what your business can "do for" free software.