http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51935
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-01-21 18:27:18 UTC --- The prerequisites page says: "While any sufficiently new version of required tools usually work, library requirements are generally stricter. Newer versions may work in some cases, but it's safer to use the exact versions documented." The contrib/download_prerequisites script gets the exact versions documented.
