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sm-discuss - Re: [SM-Discuss] RFC: combining all gcc frontends into a single spell

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  • From: Arwed von Merkatz <v.merkatz AT gmx.net>
  • To: sm-discuss AT lists.ibiblio.org
  • Subject: Re: [SM-Discuss] RFC: combining all gcc frontends into a single spell
  • Date: Wed, 22 Jul 2009 20:07:17 +0200

On Tue, Jul 21, 2009 at 05:12:39AM +0200, Ladislav Hagara wrote:
>
> > For gmp and mpfr gcc docs specify one can include the sources into the
> > tree and gcc will roll it's own. As mpfr seems to be only used by it I
> > don't see a problem with that and as gmp is needed by gcc as well might
> > as well include it. Of course any dependency on gmp would then change to
> > config_query_option.
> >
>
> If mpfr and gmp are included in gcc, every update (or only security
> update?) of mpfr or gmp should be followed by re-casting of all gcc.
> For example mpfr's HISTORY:
>
> 2009-02-26 Ladislav Hagara <hgr AT vabo.cz>
> * DETAILS: 2.4.1, SECURITY_PATCH=1, buffer overflow
>
> This would certainly causes re-casting of gcc (3 hours....).
> Mpfr alone last only 1 or 2 minutes.
>
> # ldd /usr/libexec/gcc/i686-pc-linux-gnu/4.3.3/cc1
> linux-gate.so.1 => (0xffffe000)
> libmpfr.so.1 => /usr/lib/libmpfr.so.1 (0xb7fde000)
> libgmp.so.3 => /lib/libgmp.so.3 (0xb7f8a000)
> libc.so.6 => /lib/libc.so.6 (0xb7e49000)
> /lib/ld-linux.so.2 (0xb805a000)
>

Good point. Can we resolve the circular dependency with only the
combined gcc and mpfr/gmp as separate spells? Otherwise security updates
for those will get quite painful.

--
Arwed v. Merkatz Source Mage GNU/Linux developer
http://www.sourcemage.org




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