> Date: Fri, 06 Dec 2013 21:05:51 +0000
> From: lf...@cruziero.com (akhiezer)
> To: LFS Support List <lfs-support@linuxfromscratch.org>
> Subject: Re: [lfs-support] GCC build first pass: mpc build looks for
> libgmp.la in the wrong place
>
.
.
> >
> > lfs-6.7 and lfs-6.8 both use './configure ...' options:
> > --with-gmp-include=$(pwd)/gmp --with-gmp-lib=$(pwd)/gmp/.libs
> > ; and they don't use any mpfr/mpc stuff.
> >
> > And lfs-7.0 thru lfs-7.4 uses (I've replaced the gcc version numbers with
> > the
> > literal string '${GCC_VERNUM}'):
> > --with-mpfr-include=$(pwd)/../gcc-${GCC_VERNUM}/mpfr/src \
> > --with-mpfr-lib=$(pwd)/mpfr/src/.libs
> > ; and they don't use any gmp/mpc stuff.
> >
> > Had a brief look at trac to see why the switchover at 6.8 -> 7.0 , and why
> > wanting/needing to specify those options to './configure ...' explicitly;
> > but
> > nothing obvious in the time spent.
> >
>
>
> Will leave the above remarks here, as likely to return to it.
>
.
.
>
Matt, Bruce,
It looks like, from Hazel's sterling work to be communic to list shortly,
that there may be a strong case for adding the two '--with-gmp-*' configure
command-line flags back in for at least pass-1 of gcc in chapter-5.
Looking back through the changelog for gcc-pass1 for the past 5 years
(>= rev 8755), via
http://wiki.linuxfromscratch.org/lfs/log/trunk/BOOK/chapter05/gcc-pass1.xml?rev=10400
, plus lfs-dev mailing list since lfs-6.5, it looks like the
'--with-gmp-*' may have been removed inadvertently, or at least without
explicit/overt explanation, between lfs 6.8 and 7.0, as follows.
Looks like the main relevant-here commits are, in chron order from
earliest-first:
----
* http://wiki.linuxfromscratch.org/lfs/changeset/9309
Timestamp: 06/22/10 02:25:36 (3 years ago) ((Between lfs 6.6 & 6.7 )).
Added '--with-gmp-*' configure cmdline-opts, plus explanations in
sub-section 'The meaning of the configure options'.
(Sim. for gcc-pass2).
* http://wiki.linuxfromscratch.org/lfs/changeset/9493
Timestamp: 03/30/11 13:24:53 (3 years ago) ((Between lfs 6.8 and 7.0 )).
Removed '--with-gmp-*' from configure cmdline-opts, and their
explanations from sub-section 'The meaning of the configure options'.
(Sim. for gcc-pass2).
((Also, "Message: Upgrade to GCC-4.6.0. Fixes #2847." likely should have
read '#2848' .))
* http://wiki.linuxfromscratch.org/lfs/changeset/9630
Timestamp: 10/12/11 14:35:47 (2 years ago)
'--with-mpfr-*' added; no explanations under 'The meaning of ...' .
(Sim. for gcc-pass2).
* ((
http://wiki.linuxfromscratch.org/lfs/changeset/9645
Timestamp: 10/28/11 12:42:21 (2 years ago)
Adjust mpfr paths to use '$(pwd)' . (Sim. for gcc-pass2).
))
* http://wiki.linuxfromscratch.org/lfs/changeset/10380
Timestamp: 11/23/13 15:35:47 (3 weeks ago)
Added explanation for '--with-mpfr-*' configure command-line opts, in
sub-section 'The meaning of ...' .
((Also, "Message: Add description of GCC's --enable-mpfr switches." should
perhaps have read '--with-' rather than '--enable-' .))
----
Any partic reason(s) for the removal in rev-9493 per above?
Naturally you'll likely want to see Hazel's findings before any re-addition
of the '--with-gmp-*'; but thought I'd put this in a separate parallel note.
It may be argued that mpc/gmp/mpfr might just go into host-requirements: but
I'd say best to instead have both the '--with-gmp-*' and '--with-mpfr-*' -
perhaps also '--with-mpc-*' to be on safe side - stuff on configure
command-line for gcc-pass1 & perh/prob also gcc-pass2.
rgds,
akh
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