Re: ImageMagick support on Cygwin

[Ken Brown]

On 8/20/2010 5:01 AM, Eli Zaretskii wrote:
> > Date: Fri, 20 Aug 2010 00:49:28 +0200
> > From: Angelo Graziosi<address@hidden>
> >
> > Ken Brown wrote:
> > > I think the culprit is this line in configure.in:
> > >
> > >
> > > AC_DEFINE(HAVE_MAGICKEXPORTIMAGEPIXELS, 1, [Define to 1 if 
> > > MagickExportImagePixels is defined.])
> >
> > Commenting out it and regenerating 'configure' seems to fix the issue.
>
> Can you figure out why AC_DEFINE(HAVE_MAGICKEXPORTIMAGEPIXELS) causes
> trouble in Cygwin?  What version of ImageMagick do you have?

I don't think this is a Cygwin issue.  I think it's a mistake in 
configure.in, but I could be wrong.  (I don't really understand the 
syntax of this file.)  The line I quoted seems to unconditionally define 
HAVE_MAGICKEXPORTIMAGEPIXELS, making the next line irrelevant:

  AC_CHECK_FUNCS_ONCE(MagickExportImagePixels)

What happens on Cygwin is that it doesn't have the 
MagickExportImagePixels function, and AC_CHECK_FUNCS_ONCE correctly 
detects this, but HAVE_MAGICKEXPORTIMAGEPIXELS is defined anyway.

Cygwin's ImageMagick is 6.4.0.6, to answer your last question.

Ken