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Date: Fri, 4 Sep 2009 09:15:00 -0500
Message-ID: <93c172b50909040715n791c007ema4715db95e946e2e@mail.gmail.com>
Subject: Re: Building latest GDB snapshots
From: Rugxulo <rugxulo AT gmail DOT com>
To: djgpp-workers AT delorie DOT com
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Hi,    :-)

On Fri, Sep 4, 2009 at 5:31 AM, Eli Zaretskii<eliz AT gnu DOT org> wrote:
>
> Can someone build the latest GDB CVS snapshots with DJGPP?

I personally could probably try later if you really really needed me
to, but I've never built GDB before so I'm a little hesitant.
Hopefully Andris can squeeze in a compile or two for you.   :-)

> They switched to a newer version of Autotools, where the parts of the
> configure script that are run each time it tries to compile a program
> were replaced with a shell function ac_fn_c_try_compile.

It's supposed to be much faster this way (e.g. Cygwin -> 30% speed increase=
).

> The DJGPP port of Bash crashes while running this function, at least on X=
P,
> where I have my DJGPP development environment installed.
>
> If no one can suggest a workaround for this (e.g., by some editing of
> the configure scripts or by some change in the development
> environment), I guess this will be the end of the way for the DJGPP
> port of GDB, because I will not have time and resources to debug Bash
> and fix it any time soon. =A0That would mean all the efforts I invested
> in bringing the DJGPP GDB back to life would be lost, and GDB 7.0, to
> be released soon, will not support a DJGPP build.
>
> Any help is greatly appreciated.

Wow, you sound exasperated! Yes, it's a very annoying bug, and
apparently it's existed since 2004 (hi, Gordon!). No fix yet (Bash
source is confusing!), but we do mostly know where the problem lies.

http://www.delorie.com/djgpp/mail-archives/browse.cgi?p=3Ddjgpp/2006/08/08/=
16:37:27
http://www.delorie.com/djgpp/mail-archives/browse.cgi?p=3Ddjgpp/2006/08/20/=
11:54:36
http://lists.gnu.org/archive/html/bug-autoconf/2009-08/msg00066.html

For now, I suggest the wonderful workaround of putting "( " and " )"
around the "return $ac_retval" portions. That seems to make it work
for DJGPP Bash, at least. (I guess you didn't notice my similar issue
when ZILE upgraded to AutoConf 2.64, heh.)