These files are helper scripts, invoked by the ‘configure’ script.
config.guess recognizes the platform on which the script is
running, and produces a triplet of the form
config.sub receives a possibly abbreviated triplet and produces a
canonical triplet for a platform. For more information, see
It is important that you always include the newest versions of these two files in your tarball, because people who work on emerging platforms otherwise have a hard time building your package.