http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55699
Bug #: 55699 Summary: gmp-5.1.0 no longer supports --host=none-... Classification: Unclassified Product: gcc Version: 4.7.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassig...@gcc.gnu.org ReportedBy: g...@denis-excoffier.org Created attachment 28971 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28971 use gmp-5.1.0-RC2 (and later) embedded in source directory Building gcc-4.7.2 with gmp embedded in source directory no longer does not work with gmp-5.1.0 (gmp-5.0.5 works perfectly), and the following message is produced: the "none" host is obsolete, use --disable-assembly Presumably, this is for all (recent) GCC versions (and including the 4.8 snapshots) and all platforms, when you embed gmp in your source directory. The attached patch solves this. Hope this helps.