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Re: Require GCC 5 or later to build glibc (bug 23993)
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: Joseph Myers <joseph at codesourcery dot com>
- Cc: GNU C Library <libc-alpha at sourceware dot org>
- Date: Tue, 18 Dec 2018 10:44:13 -0800
- Subject: Re: Require GCC 5 or later to build glibc (bug 23993)
- References: <alpine.DEB.2.21.1812181809510.2407@digraph.polyomino.org.uk>
On Tue, Dec 18, 2018 at 10:10 AM Joseph Myers <joseph@codesourcery.com> wrote:
>
> We know that building glibc with GCC 4.9 is broken on various
> platforms (bug 23993). As it's more than a year since we last
> increased the minimum GCC version to build glibc, this patch changes
> the requirement to be GCC 5 or later (indeed, based on 4.9 having been
> required for building 2.26, it would be consistent in terms of timing
> to require GCC 6 or later from the 2.30 release onwards). It
> deliberately just updates the configure test and corresponding
> documentation, leaving removal of no-longer-needed __GNUC_PREREQ tests
> for a separate patch.
>
> In the NEWS entry, the requirement for a newer GCC version for
> powerpc64le is reiterated (as in the entry for the 4.9 requirement in
> 2.26) to avoid suggesting the version requirement there has gone down.
> (If that version goes up further as part of support for binary128 long
> double, of course the wording would change at that time.)
>
> Tested for x86_64.
>
> 2018-12-18 Joseph Myers <joseph@codesourcery.com>
>
> [BZ #23993]
> * configure.ac (libc_cv_compiler_ok): Require GCC 5 or later.
> * configure: Regenerated.
> * manual/install.texi (Tools for Compilation): Update minimum GCC
> version.
> * INSTALL: Regenerated.
>
LGTM.
Thanks.
--
H.J.