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bug#7955: configure does not thoroughly test for ImageMagick includes

From: joakim
Subject: bug#7955: configure does not thoroughly test for ImageMagick includes
Date: Wed, 02 Feb 2011 10:30:44 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux)

Chong Yidong <address@hidden> writes:

> Joakim, mind taking a look at this?  Thanks.

I'll ask the ImageMagick maintainers.

If that fails, I can try to add a specific configure check for the include file
we need.

If I could get a pointer to a virtualization image for rhel 4.8 that
would be splendid too.

> Glenn Morris <address@hidden> writes:
>> Package: emacs
>> Version: 24.0.50
>> Severity: minor
>> I tried to build the current trunk on a RHEL 4.8 system.
>> This has ImageMagick 6.0.7 installed.
>> configure decided that ImageMagick was usable:
>>   checking for Wand... yes
>>   checking IMAGEMAGICK_CFLAGS...
>>   checking IMAGEMAGICK_LIBS... -lWand -lMagick
>>   checking for MagickExportImagePixels... no
>>   [...]
>>   Does Emacs use imagemagick?                             yes
>> However, the build failed because of this:
>>   image.c:7455:29: warning: wand/MagickWand.h: No such file or directory
>> The system has /usr/include/wand/magick_wand.h, but it does not
>> have /usr/include/wand/MagickWand.h. Looks like the former is now
>> deprecated. The latter does exist on RHEL 5.5, with ImageMagick 6.2.8.
>> Obviously I can just re-configure using --without-imagemagick, but
>> Emacs should do this for me. Either configure should test for some
>> required minimum version of ImageMagick (I was not able to find out in
>> what version wand/MagickWand.h was added); or image.c should fall back
>> to wand/magick_wand.h if it can.

Joakim Verona

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