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Re: non portable sed scripts

From: Ralf Wildenhues
Subject: Re: non portable sed scripts
Date: Fri, 19 May 2006 20:37:06 +0200
User-agent: Mutt/1.5.11+cvs20060403

Hi Tim,

* Tim Rice wrote on Fri, May 19, 2006 at 06:57:48PM CEST:
> Autoconf version 2.59c
> I had an opportunity to run a configure script generated with 2.59c
> (ftp://ftp.gnu.org/gnu/coreutils/coreutils-5.95.tar.gz) and found
> that it failed.

> config.status: creating config.h
> UX:sed: ERROR: Command garbled: HAVE_DECL_STRNDUP\)[   (].*$,\1define\2 0 ,

I'm pretty sure the syntax of the sed script is ok.  It's probably that
your sed has a length restriction.  We check the 99 commands limit, but
not the 2000 characters limit any more...  :-/

This particular sed script seems to have around 7200 characters before
the failing line though.  So what's the limit on your system?

To get at the individual sed scripts for config.h:
- in config.status, search for lines
    sed -f "$tmp/defines.sed" "$tmp/out..." >"$tmp/out..."
  and rename the file "$tmp/defines.sed" afterwards, so it's not
  overwritten by the next file.

- Then, watch
    sh -x ./config.status -d
  and look at the sed scripts.

Boy, I hope this isn't so difficult to fix, with all that reworking done
to the config.status code.

Cheers, and thanks for reporting this!

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