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Re: fix for fugly autoconf 2.62 bug

From: Mike Frysinger
Subject: Re: fix for fugly autoconf 2.62 bug
Date: Tue, 22 Apr 2008 02:09:22 -0400
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On Tuesday 22 April 2008, Ralf Wildenhues wrote:
> * Eric Blake wrote on Mon, Apr 21, 2008 at 02:25:24PM CEST:
> > According to Per Øyvind Karlsen on 4/20/2008 6:01 AM:
> > |>> Oh, I'm mixing up bugzilla entries, I actually meant
> > |>> http://bugs.gentoo.org/show_bug.cgi?id=217976.
> > |>
> > |> thanks, the patch you posted does fix this.  i wonder why it doesnt
> > |> fail with 2.61 though since the code in question is the same ...
> > |
> > | The change resulting in this is the following:
> >
> > (http://git.sv.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=ce429ecdc036
> >98025176d3003e113e6e003b429f)
> >
> > Thanks for the details.  This commit was made by Ralf, not me, so it
> > gives further argument to the rule of reporting to the bug list rather
> > than a private developer (particularly since I didn't have access to my
> > email over the weekend, leading to this lag in reading your complete
> > thread).
> Can we see the complete thread somewhere?

Eric responded to the relevant e-mails.  really it was just me asking Per to 
send to bug-autoconf ;).

> This bug does not happen with
>                  bar])
> It can happen with
> f='foo
> bar'
> or with obsolete:
> bar" ./config.status
> which is not fixed by your patch.  So I'd like to see more information
> on how you triggered this issue, maybe I overlooked something, before
> venturing into a fix.

the referenced Gentoo bug (217976) is an example.  if the autotool code in 
mysql-5.0.56 is rebuilt with <=autoconf-2.61 it works.  if vanilla 
autoconf-2.62 is used, it fails.  if autoconf-2.62 + Per's patch are used, it 
works (not suggesting that Per's patch is correct, just that it makes an 
obvious difference).

see comment #3 in the bug as for the error output to look for during the mysql 
configure process (really the berkdb subdir).

i can try to track it down further for more of a test case than "run 
autoreconf && ./configure with mysql-5.0.56", but if you could have a quick 
look see first, that would be great as you'll have an idea of what to look 
for in the configure.ac files.

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