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Date: Tue, 30 Nov 2004 19:48:14 -0600 (CST)
From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
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To: Thom DeCarlo <t.r.decarlo@larc.nasa.gov>
Subject: Re: [Tiff] Problem compiling 3.7.0 on cygwin
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I have now compared the jpeglib.h delivered with libjpeg under Cygwin 
with the official jpeglib.h and am shocked at the degree of difference 
noticed.  All of the "private" structure members have been renamed and 
some support has been added for lossless JPEG.  A number of public 
defines have been renamed.

There is no comment in the header noting that it is something other 
than a stock libjpeg 6b header.  This seems shameful to me.

Regardless, it appears that libtiff is using a member which is 
supposed to be private to libjpeg.

Bob

On Tue, 30 Nov 2004, Thom DeCarlo wrote:

> Hello,
> I'm trying to compile the 3.7.0 release on a Win2K computer using CYGWIN.
> (Cygwin is still distributing 3.7.0-beta2.1)
>
> I've uninstalled the cygwin libtiff files (at least I think I got all of
> them) and run ./configure which tells me that it found JPEG support. (Cygwin
> distributes jpeg version 6b-11.)
>
> I then run "make" and the build crashes in tif_jpeg.c with the messages:
> tif_jpeg.c: In function `alloc_downsampled_buffers':
> tif_jpeg.c:580: error: structure has no member named `width_in_blocks'
> tif_jpeg.c: In function `JPEGEncodeRaw':
> tif_jpeg.c:1261: error: structure has no member named `width_in_blocks'
> tif_jpeg.c: In function `JPEGPostEncode':
> tif_jpeg.c:1322: error: structure has no member named `width_in_blocks'
> make[2]: *** [tif_jpeg.lo] Error 1
>
> Is this going to require a different version of the jpeg libraries? And
> where can I find it? I found a reference to ftp.uu.net:/graphics/jpeg at the
> top of the file, but I think my office netadmininazi has blocked access to
> that site.
>
> Thanks,
> Thom
>
> --
> Thom DeCarlo
> ----------------------------------------
>     That Which Does Not Kill Me
>     Can Still Hurt Really Bad.
>
>
> _______________________________________________
> Tiff mailing list
> Tiff@remotesensing.org
> http://xserve.flids.com/mailman/listinfo/tiff
>

======================================
Bob Friesenhahn
bfriesen@simple.dallas.tx.us
http://www.simplesystems.org/users/bfriesen
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