X-Recipient: archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status: No, hits=0.1 required=5.0	tests=AWL,BAYES_05,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,TW_BG,TW_BP,T_RP_MATCHES_RCVD,T_TO_NO_BRKTS_FREEMAIL
X-Spam-Check-By: sourceware.org
Message-ID: <20100518091638.90179.qmail@web3302.mail.ogk.yahoo.co.jp>
Date: Tue, 18 May 2010 18:16:38 +0900 (JST)
From: Tatsuro MATSUOKA <tmacchant2 AT yahoo DOT co DOT jp>
Reply-To: matsuoka AT nuce DOT nagoya-u DOT ac DOT jp
Subject: Re: [ANNOUNCEMENT] Updated: {gd/libgd2/libgd-devel}-2.0.36RC1-11: An open source code library for the dynamic creation of images.
To: cygwin AT cygwin DOT com
Cc: tmacchant2 AT yahoo DOT co DOT jp
In-Reply-To: <announce.7zeihauwa0.fsf@vzell-de.de.oracle.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-2022-jp
X-IsSubscribed: yes
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Precedence: bulk
List-Id: <cygwin.cygwin.com>
List-Unsubscribe: <mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT 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

Hello

I'm glad to see that libgd2 is updated to fix the fontconfig related bug.

I aplogized that I have not told that gd_png.c should be modified 
when linking with the libpng-1.4, which is current release of the libpng.

The gd_png.c in gd-2.0.36RC1 uses the function png_check_sig in the libpng-1.2 or earlier.
However the png_check_sig is removed from the libpng-1.4.

In the libpng-1.4.1.txt in the libpng-1.4 source from the line 3007,
one finds the following
***********************************
The function
    png_check_sig(sig, num)
was replaced with
    !png_sig_cmp(sig, 0, num)
It has been deprecated since libpng-0.90.
***********************************

Therefore the patch will below is required for when linking with the libpng-1.4.
************************************************
--- gd_png.c.orig	2007-11-27 17:30:34 +0900
+++ gd_png.c	2010-03-10 10:32:06 +0900
@@ -151,7 +151,7 @@
 	return NULL;
   }
 
-	if (!png_check_sig (sig, 8)) { /* bad signature */
+	if (png_sig_cmp(sig, 0, 8) != 0) { /* bad signature */
     	return NULL;		/* bad signature */
 	}
***************************************** 
Currently the version of the linpng in cygwin is 1.2 so that png_check_sig does not cause error.

When the libpng on the cygwin will updated, please apply the above patch and update libgd. 

I wrote the above for your information.

Regards

Tatsuro

--- "Dr. Volker Zell" <dr DOT volker DOT zell AT oracle DOT com> wrote:

> Hi
> 
> New versions of 'gd/libgd2/libgd-devel' have been uploaded to a server near you.
> 
> 
> Cygwin NEWS:
> ============
> 
>  o Fixed bug for the treatment of fontconfig libraries
> 
> 
>  
> CYGWIN-ANNOUNCE UNSUBSCRIBE INFO
> ================================
> 
> 
> If you want to unsubscribe from the cygwin-announce mailing list, please
> use the automated form at:
> 
> 
> http://cygwin.com/lists.html#subscribe-unsubscribe
> 
> If this does not work, then look at the "List-Unsubscribe: " tag in the
> email header of this message.  Send email to the address specified
> there.  It will be in the format:
> 
> 
> cygwin-announce-unsubscribe-you=yourdomain DOT com AT cygwin DOT com
> 
> If you need more information on unsubscribing, start reading here:
> 
> http://sourceware.org/lists.html#unsubscribe-simple
> 
> Please read *all* of the information on unsubscribing that is available
> starting at this URL.
> 
> --
> 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
> 
> 


--------------------------------------
2010 FIFA World Cup News [Yahoo!Sports/sportsnavi]
http://pr.mail.yahoo.co.jp/southafrica2010/

--
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