Re: crosstool-0.35 w/ NPTL patch running demo-i686-nptl.sh fails building libc

[Greg Schafer <gschafer at zip dot com dot au>]

On Wed, Jun 29, 2005 at 05:07:31PM -0700, Daniel Kegel wrote:

> Khem Raj wrote:
> >>I am running crosstool-0.35 (Thanks Dan Kegel) patched with 
> >>crosstool-0.34-nptl.patch (Thanks Steven J. Hill).
> >>
> >>demo-i686-nptl.sh fails for me, during the libc build. ...
> >
> >Are you applying glibc-2.3.3-libeh-kludge.patch patch or not.
> >its in crosstool-0.35/patches/glibc-2.3.3/ folder.
> 
> As somebody else noted, that patch would interfere with building nptl.
> Presumably deleting it would help....

IMHO, the hackery that Crosstool employs to handle the libgcc_eh.a situation
is very much unnecessary. A much simpler solution exists.. and that is to
simply create a symlink:

  libgcc_eh.a -> libgcc.a

after the first cross GCC is built and installed.

The technique is used by at least:

  - Janis Johnson's `buildtools' scripts [1]
  - Alan Modra'a `recipe' script [2]
  - Alexandre Oliva [3]
  - my very own DIY Linux Reference Build [4]

Only 2 of the above refer to cross builds but the core problem is identical.
I'm also developing a simplified cross building procedure (so far
unpublished) where it works fine there too.. Some detailed rationale
discussion can be found here:

  http://www.diy-linux.org/pipermail/diy-linux-dev/2005-June/000556.html

Crosstool's logic could be greatly simplified were you to adopt the
technique (IMHO of course).

Regards
Greg

1. ftp://ftp.linuxppc64.org/pub/people/janis/
2. http://gcc.gnu.org/ml/gcc-patches/2005-05/msg02811.html
3. http://gcc.gnu.org/ml/gcc-patches/2005-02/msg00591.html
4. http://www.diy-linux.org/x86-reference-build/

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