> Date: Tue, 17 Dec 2013 16:39:03 +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
>
> > 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 ...' .
- that was added for gcc-pass1 only, and not for gcc-pass2; whereas the
old(er) '--with-gmp-*' explanations were on both of gcc-pass1 & gcc-pass2
pages.
> ((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?
>
- and there doesn't seem to be any usual-format 'formal' email message to
lfs-book for r9493 - instead it jumps from r9492 to r9494 - at least as
shown at 'http://news.gmane.org/gmane.linux.lfs.book' (ca. pages 35-36 in
the drop-down menu at top-right); (
'http://www.mail-archive.com/lfs-book@linuxfromscratch.org/' seems to not
go back that far.)
>
> 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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