Mailing-List: contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT sources DOT redhat DOT com Delivered-To: mailing list cygwin AT sources DOT redhat DOT com Message-ID: <399035E2.5DE36128@ece.gatech.edu> Date: Tue, 08 Aug 2000 12:31:30 -0400 From: "Charles S. Wilson" X-Mailer: Mozilla 4.7 [en] (WinNT; U) X-Accept-Language: en MIME-Version: 1.0 To: GRENON Richard CC: tomcw AT localnet DOT com, cygwin AT sourceware DOT cygnus DOT com Subject: Re: Problems with Libtiff, Libpng References: <398EF5AD DOT 97DC2CEC AT onera DOT fr> <200008071749 DOT NAA01544 AT envy DOT delorie DOT com> <398EFA1C DOT 6EC280E7 AT onera DOT fr> <200008071834 DOT OAA01863 AT envy DOT delorie DOT com> <398FC918 DOT E615E237 AT onera DOT fr> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit @#$!%@! Thank you for reporting this problem with libpng.dll. I asked for problem reports, and got none. Therefore I assumed that the libpng-1.0.8 was ready for primetime. I am sorry that appears to not be the case. But, you know what? Since nobody bothered to report any of these problems at the time, and only happened to mention them in passing almost a month later -- I no longer care. You obviously have known about the problem with libpng, libz and OpenDX for some time, but neglected to tell anybody about it. --Chuck P.S. It is well known (among the png-developers) that libpng-1.0.6 had certain compatibility problems. These were corrected in -1.0.7 and 1.0.8. Therefore, if OpenDX worked with -1.0.6 but not later versions, it is because OpenDX probably hacked around the 'compatibility' problems of 1.0.6, thus making itself incompatible with all other versions of that library. IMO, libpng-1.0.8 is not at fault; OpenDX should be fixed (or at least, recompiled & relinked). P.P.S. I'd recommend that applications NOT include their own versions of system dll's (like libz, libpng, libtiff, etc). They should be compiled to work with the 'official' versions. That's why I built them, and pushed to add them to the official distribution -- so that 27 different apps wouldn't all include their own private, incompatible versions of libz.dll. So far, I think OpenDX and WM (and possibly X11) need to be recompiled to use the 'official' libz and not build their own. X11 is a special case, since it lives in its own directory (/usr/X11R6/bin) and can take advantage of peculiarities of the windows dynamic loader to force using its own version of libz, regardless of $PATH. GRENON Richard wrote: > > Tom Weichmann wrote: > > > > Hello, > > > > I may have found a problem with LIBZ.DLL. When using a binary > > distribution of Windowmaker from the xfree project, I get an error. > > When running 'wmaker' I get a dialog box stating: > > > > Error Starting Program > > The LIBTIFF.DLL file is linked to missing export LIBZ.DLL:inflateInit_ > > > > > The same error occurs in regards to LIBPNG as well. > > > > I am running cygwin 1.1.3 on Win98 > > I had similar problems with the OpendDX Cygwin binary from > www.opendx.org, first with LIBZ.DLL when I was using Cygwin1.1.2 and > Suhaib Siddiqi helped me to solve this problem (See opendx-users mailing > list). Then I had a new problem with LIBPNG.DLL when I updated to Cygwin > 1.1.4. > > With Cygwin 1.1.2 I had to rename the LIBZ.DLL from the Cygwin > distribution to make OpenDX use its own LIBZ.DLL or the X11R6 LIBZ.DLL > (both seem identical). Check for all LIBZ.DLL on your hard drive. You > should at least try the X11R6 one. If you don't want to rename or remove > the Cygwin LIBZ.DLL, maybe you can modify the PATH so as the correct dll > is found first. > > When I updated to Cygwin 1.1.4, LIBZ.DLL from the Cygwin distribution > was working with OpenDX, but not LIBPNG.DLL. As the OpenDX binary has no > LIBPNG.DLL it should use the Cygwin one. Cygwin 1.1.4 installed > libpng-1.0.8-1 and I had to re-install the old Cygwin libpng-1.0.6-1 in > order to keep OpenDX working. > > I hope this could help you. > -- Want to unsubscribe from this list? Send a message to cygwin-unsubscribe AT sourceware DOT cygnus DOT com