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From: Charles Wilson <cygwin@cwilson.fastmail.fm>
To: cygwin@cygwin.com
Subject: Re: Failed linking gettext-0.18
Date: Fri, 06 Aug 2010 21:44:00 -0000	[thread overview]
Message-ID: <4C5C8247.3000800@cwilson.fastmail.fm> (raw)
In-Reply-To: <i3ggkk$ukl$1@dough.gmane.org>

On 8/6/2010 4:20 AM, Markus Moeller wrote:
> Can you tell me what the error means and what I can do to fix it ?
>
> Thank you
> Markus
>
> "Charles Wilson" <xxx@xxx.xxx> wrote in message

PCYMTNQREAIYR -----^^^^^^^^^^^^

And please don't top-post:
A: Yes.
 > Q: Are you sure?
 >>A: Because it reverses the logical flow of conversation.
 >>>Q: Why is top posting frowned upon?

It's complicated.  The upstream maintainer of gettext REALLY dislikes a 
mechanism used for symbol resolution by the GNU toolchain (gcc/ld) with 
DLLs on mingw and cygwin: "auto-import".  So, he arranges that gettext 
is always compiled with --disable-auto-import.

However, recent versions of g++'s runtime library, libstdc++, ITSELF, 
require auto-import when linking IIUC.  Hence, boom.

I'm not sure this is easily fixed.  IF I am correct, there are two 
options: (1) teach g++ how to build a libstdc++ DLL that exports symbols 
"properly" rather than requiring auto-import.  This depends on a new 
cygwin g++ compiler I think.  OR, (2) override the build procedure for 
gettext to ensure that --enable-auto-import is provided on every link 
command, AFTER the "default" gettext setting of --disable-auto-import.

IIRC, just setting LDFLAGS before configuring won't do it, because Bruno 
*deliberately* arranged things to make overriding his desired 
auto-import behavior difficult.

--
Chuck

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  reply	other threads:[~2010-08-06 21:44 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-04 20:53 Markus Moeller
2010-08-04 21:42 ` Charles Wilson
2010-08-06  8:20   ` Markus Moeller
2010-08-06 21:44     ` Charles Wilson [this message]
2010-08-07  8:54       ` Corinna Vinschen
2010-08-07 15:53         ` Charles Wilson
2010-08-07 13:11       ` Markus Moeller
2010-08-07 22:50         ` Markus Moeller
2010-08-07 13:00 Angelo Graziosi

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