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Date:	Thu, 19 Aug 2010 17:18:12 +0200
From:	Angelo Graziosi <angelo DOT graziosi AT alice DOT it>
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To:	Cygwin <cygwin AT cygwin DOT com>
Subject:	Re: ImageMagick: Still more insufficient package dependencies?
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Ken Brown wrote:
> This looks to me like an Emacs configuration problem, not a Cygwin problem. The code in image.c:7723 is guarded by #ifdef HAVE_MAGICKEXPORTIMAGEPIXELS, and configure reported "no" in the corresponding test.

If I understand this rightly,

...
checking for MagickExportImagePixels... no
...

is right, i.e. the Cygwin binaries of ImageMagick do not support the 
function 'MagickExportImagePixels', but Emacs 'configure' sets 
'HAVE_MAGICKEXPORTIMAGEPIXELS' to true in any case, so that the build 
enables the imagemagick support,

...
Does Emacs use imagemagick?       yes
...

but it fails, obviously, at link time. This seems to be confirmed by

$ grep -iR MagickExportImagePixe config.status
D["HAVE_MAGICKEXPORTIMAGEPIXELS"]=" 1"

$ grep -iR MagickExportImagePixe src/config.h
/* Define to 1 if you have the `MagickExportImagePixels' function. */
#define HAVE_MAGICKEXPORTIMAGEPIXELS 1

Thanks for clarification.

- Angelo

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