X-Recipient:	archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status:	No, hits=-0.8 required=5.0 tests=AWL,BAYES_50,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,TW_GW,TW_LG,T_TO_NO_BRKTS_FREEMAIL
X-Spam-Check-By:	sourceware.org
Message-ID:	<4E7F4F4E.5070605@gmail.com>
Date:	Sun, 25 Sep 2011 16:57:02 +0100
From:	Dave Korn <dave DOT korn DOT cygwin AT gmail DOT com>
User-Agent:	Thunderbird 2.0.0.17 (Windows/20080914)
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	Re: Bogus dependencies in libtool .la files for libgtk2.0-devel-2.20.1-1, libpango1.0-devel-1.28.1-1, libpango1.0-devel-1.28.1-1
References:	<4E7F400F DOT 8060004 AT gmail DOT com> <j5ni39$ur1$1 AT dough DOT gmane DOT org>
In-Reply-To:	<j5ni39$ur1$1@dough.gmane.org>
X-IsSubscribed:	yes
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

On 25/09/2011 16:42, jojelino wrote:

> lstdc++ is included in postdeps in libtool for some reason.
> 
> postdeps="-lstdc++ -lmingwthrd -lmingw32 -lgcc_s -lgcc -lmoldname
> -lmingwex -lmsvcrt -ladvapi32 -lshell32 -luser32 -lkernel32 -lmingwthrd
> -lmingw32 -lgcc_s -lgcc -lmoldname -lmingwex -lmsvcrt"
> 
> this postdeps was introduced by
> output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 |
> $GREP -v "^Configured with:" | $GREP "\-L"'
> 
> but in config.status,
> postdeps=''
> postdeps_CXX='-lstdc++ -lmingwthrd -lmingw32 -lgcc_s -lgcc -lmoldname
> -lmingwex -lmsvcrt -ladvapi32 -lshell32 -luser32 -lkernel32 -lmingwthrd
> -lmingw32 -lgcc_s -lgcc -lmoldname -lmingwex -lmsvcrt'
> so it seems good.
> therefore, this problem began from *executing libtool commands*.
> the variable 'postdeps' is not tagged with "_CXX". resulting in
> wrong-generated libtool

  I think this is just libtool working normally; $postdeps is the current
dependencies for this particular invocation, and internally it's doing
something like "postdeps=${postdeps_${tag}}" so it's setting
postdeps=$postdeps_CXX in response to getting --tag=CXX on the command-line,
isn't it?  The underlying cause is more likely to be in the way that the
Makefile.am is setting the libtool control variables, which is probably an
issue for upstream.

  (And of course this doesn't show up on Linux, where the linker doesn't
complain about a dynamic library not being found because it can just leave
undefined reference in the final executable to be resolved by ld.so at
runtime.  But as soon as you try it on a PE rather than ELF platform...)

    cheers,
      DaveK

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -