ImageMagick 7 released.

[emcconville]

Looks like the time for cffi rewrite is near. ImageMagick 7 has moved out of beta, and has been distributed.

Porting over view here

Key Changes

• PixelPacket replaced with Quantum Traits
• Many typedef enum have been rewritten.
• {METHOD}Channel have been replaced with SetImageChannelMask

[lucvandort]

I just spent two hours finding out that IM7 does not work with wand. (at least on Windows 7). It seems to be related to a rename of the core dll files:

IM6: CORE_RL_wand_.dll
IM7: CORE_RL_MagickWand_.dll

api.py looks for the IM6 dll file, which cannot be found in an IM7 installation.

[boegel]

I naively assumed that Wand would be compatible with ImageMagick 7.x, but it turns out it's not:

python -c "import wand.image"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "build/bdist.linux-x86_64/egg/wand/image.py", line 20, in <module>
  File "build/bdist.linux-x86_64/egg/wand/api.py", line 1394, in <module>
ImportError: MagickWand shared library not found or incompatible
Original exception was raised in:
Traceback (most recent call last):
  File "build/bdist.linux-x86_64/egg/wand/api.py", line 289, in <module>
    ctypes.c_void_p]
  File "/user/scratch/gent/vsc400/vsc40023/easybuild_REGTEST/SL6/sandybridge/software/Python/2.7.11-intel-2016a/lib/python2.7/ctypes/__init__.py", line 378, in __getattr__
    func = self.__getitem__(name)
  File "/user/scratch/gent/vsc400/vsc40023/easybuild_REGTEST/SL6/sandybridge/software/Python/2.7.11-intel-2016a/lib/python2.7/ctypes/__init__.py", line 383, in __getitem__
    func = self._FuncPtr((name_or_ordinal, self))
AttributeError: /user/scratch/gent/vsc400/vsc40023/easybuild_REGTEST/SL6/sandybridge/software/ImageMagick/7.0.1-9-intel-2016a/lib/libMagickWand.so: undefined symbol: MagickGetImageMatteColor

This was with ImageMagick v7.0.1-9 .

It would be nice to make setup.py check for the ImageMagick version?

[ewerybody]

Oh same here m(
rolled back to 6.9.5-Q16 and it works again. Pchew.

[karhohs]

I also could not use Wand with IM7 and Windows10. I had to use the last IM6 release.

[emcconville]

Closing this as the porting work for IM7 has been completed.