X-Recipient: archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status: No, hits=-2.4 required=5.0 	tests=AWL,BAYES_00,SPF_PASS
X-Spam-Check-By: sourceware.org
Message-ID: <49FD6393.5040801@gmail.com>
Date: Sun, 03 May 2009 10:27:47 +0100
From: Dave Korn <dave DOT korn DOT cygwin AT googlemail DOT com>
User-Agent: Thunderbird 2.0.0.17 (Windows/20080914)
MIME-Version: 1.0
To: cygwin AT cygwin DOT com
Subject: Re: [ANNOUNCEMENT] [1.7] pl-0.10.2-1 - the Parma Polyhedra Library
References: <announce DOT 49F9A229 DOT 1070908 AT gmail DOT com> <49FBF62E DOT 3060904 AT cs DOT unipr DOT it> <49FC71B7 DOT 3030000 AT cwilson DOT fastmail DOT fm> <49FC7EF9 DOT 4050908 AT gmail DOT com> <49FCACE6 DOT 4000104 AT cwilson DOT fastmail DOT fm> <49FCE65C DOT 7040409 AT gmail DOT com> <49FCE88D DOT 6040709 AT cwilson DOT fastmail DOT fm>
In-Reply-To: <49FCE88D.6040709@cwilson.fastmail.fm>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
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

Charles Wilson wrote:
> Dave Korn wrote:
>> Charles Wilson wrote:
>>> Dave Korn wrote:
>>>> Charles Wilson wrote:
>>>>> Roberto Bagnara wrote:
>>>>>
>>>>>> concerning the need to link with "LDFLAGS=-Wl,--enable-auto-import",
>>>>>> I am wondering if there is something we could do upstream to simplify
>>>>>> the life of Cygwin users.  If so, please let me know.
>>>>> In gcc-4.x --enable-auto-import is the default.
>>>>   No, right now it's the default setting in binutils CVS, but I haven't added
>>>> it to the gcc specs.  (Guess I should for the benefit of those with older
>>>> linkers).
>>> You're right; I was confused.  I was thinking of the binutils change.
>>> However, I wonder about the gcc thing.  If the specs file includes
>>> -Wl,--enable-auto-import, and I pass -Wl,--disable-auto-import on the
>>> command line, who wins?
>>
>>   I just don't know.  I suspect it may even depend; e.g. DRIVER_SELF_SPECS
>> gets applied early, LINK_SPEC later, but I haven't experimented.  (On the
>> actual ld command-line itself, later options always override earlier ones.)
> 
> In that case, maybe it's better to just leave the default behavior up to
> binutils and not try to over-specify using the specs file approach.

  I'm not sure.  It's the compiler that knows what it needs, which is the same
regardless of binutils' preferences, I'm leaning toward the idea that it
should be in the linker specs for the benefit of anyone using older binutils.

    cheers,
      DaveK


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