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Re: Support Library Requirements for GCC 10
- From: Richard Biener <richard dot guenther at gmail dot com>
- To: Bruno Haible <bruno at clisp dot org>
- Cc: GCC Development <gcc at gcc dot gnu dot org>
- Date: Tue, 7 Jan 2020 13:40:20 +0100
- Subject: Re: Support Library Requirements for GCC 10
- References: <5029943.NP8ikY970j@omega> <CAFiYyc3UqXyT-dOTOJE8kMwHqRiW5OUa0Rs=KOi3JKGsHX4Yvg@mail.gmail.com>
On Tue, Jan 7, 2020 at 1:38 PM Richard Biener
> On Sun, Jan 5, 2020 at 9:28 PM Bruno Haible <firstname.lastname@example.org> wrote:
> > Hi,
> > The minimum support library version of MPC for building GCC 10 is not
> > correct.
> > After downloading gcc-10-20191229.tar.xz and
> > $ cd gcc-10-20191229/gcc/doc
> > $ ./install.texi2html
> > $ xdg-open HTML/prerequisites.html
> > I installed
> > - gmp 4.3.2 - works,
> > - mpfr 3.1.0 - works,
> > - mpc 0.8.1 - fails!
> > The failure has been reported already in . The fix is to use
> > - mpc 1.0.3 - works.
> Indeed. I checked 0.8.2 and it doesn't work, I checked 1.0.1 and that does
> so I adjusted it to 1.0.1 or later.
Note that in-tree builds are only supported for exactly the versions that
./download_prerequesites download but the minimal documented versions
are those that are known to work when the library is compiled and installed
> > This wastes some time for everyone who attempts to install GCC 10 from
> > scratch.
> > In  it was suggested to look in the contrib/download_prerequisites script.
> > This script indeed contains
> > mpc='mpc-1.0.3.tar.gz'
> > Additionally, the mpc-0.8.1 release is so old that it is not (or no longer)
> > on ftp.gnu.org .
> > Therefore I would suggest
> > 1) to change the documentation (HTML/prerequisites.html) in the GCC 10
> > snapshots to mention mpc-1.0.3 instead of mpc-0.8.1,
> > 2) likewise, change https://gcc.gnu.org/install/prerequisites.html
> > to mention mpc-1.0.3 instead of mpc-0.8.1.
> > Bruno
> >  https://gcc.gnu.org/ml/gcc/2017-05/msg00022.html
> >  https://gcc.gnu.org/ml/gcc/2017-05/msg00024.html
> >  https://ftp.gnu.org/gnu/mpc/