[Octave-bug-tracker] [bug #63331] Octave fails to build against ImageMagick 7

[Markus Mützel]

Update of bug #63331 (project octave):

                 Summary: octave fails to build against imagemagick => Octave
fails to build against ImageMagick 7

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Follow-up Comment #2:

If I understand correctly, the API has changed between ImageMagick 6 and
ImageMagick 7:
https://imagemagick.org/script/porting.php

We should probably make the configure checks more specific and check whether
the objects we are using and that were removed from ImageMagick 7 are
available (e.g. `Magick::PixelPacket`).

In a second, and maybe more complicated step, it might be nice if someone
could port our code to the new API (while ideally maintaining compatibility
with the older API and - more importantly - with GraphicsMagick++).
But that might be cumbersome if the APIs of ImageMagick and GraphicsMagick get
more and more different.
IIUC, the GraphicsMagick project aims for a more stable API which might be
easier to follow.
I haven't looked into it in any detail. But maybe, we should just drop support
for ImageMagick at some point (maybe now?) if following its API changes is too
much effort.


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