MayaPy Cython Error

[xuzon...@gmail.com]

Hi Everyone!
I got a issue which beset me in the past few days about how to compiling pyd file using mayapy.exe.

I have tested on Windows10 with both maya2014 and maya2016 sp6, but got the same error like bellow:

"Runtime Error!
Program: C:\Program Files\Autodesk\Maya2014\bin\mayapy.exe

R6034
An application has made an attempt to load the C runtime library incorrectly.
Please contract the application's support team for more information."


E:\test\test>mayapy setup.py build_ext --inplace
Traceback (most recent call last):
File "setup.py", line 2, in <module>
from Cython.Build import cythonize
File "C:\Program Files\Autodesk\Maya2014\Python\lib\site-packages\Cython\Build\__init__.py", line 1, in <module>
from .Dependencies import cythonize
File "C:\Program Files\Autodesk\Maya2014\Python\lib\site-packages\Cython\Build\Dependencies.py", line 59, in <module>
from ..Compiler.Main import Context, CompilationOptions, default_options
File "C:\Program Files\Autodesk\Maya2014\Python\lib\site-packages\Cython\Compiler\Main.py", line 28, in <module>
from .Scanning import PyrexScanner, FileSourceDescriptor
ImportError: DLL load failed: A dynamic link library (DLL) initialization routine failed.


--------------------------------------------------------------------

This is my simple hello world python script file:

def hello():
print "Hello World"

--------------------------------------------------------------------

This my setup.py file:

from distutils.core import setup
from distutils.extension import Extension
from Cython.Distutils import build_ext

setup(
cmdclass = {'build_ext': build_ext},
ext_modules = [Extension("helloworld", ["helloworld.py"])]
)

----------------------------------------------------------------------

Btw, i used pip to install Cython under C:\Program Files\Autodesk\Maya2014\Python\Lib\site-packages.


Does anyone face the same issue like me and have any solution about it?
Anyone can help?
Great thanks for you!!

[Justin Israel]

My guess is that the compiled aspects of Cython don't like being loaded into Maya's python. Do you need to build Cython against Maya specifically?

I use Cython-based projects inside of Maya, but my experience is on Linux. Generally I can just use a standard Cython installation and build with a generally compatible gcc version. 

Justin

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[Robert White]

You'd need to build Cython for maya against the proper version of visual studio.

Which in 2014 I believe was VS2010. You'll also need to use that version when actually compiling your cython project.

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[xuzon...@gmail.com]

Thanks Justin Israel and Robert White, i will give a try..

[xuzon...@gmail.com]

Thanks very much to Justin Israel and Robert White, I had solved the issue already!!
Like you said, i had install visual studio 2012, and build Cython for maya2014 and maya2016. Both of them are working fine!! Great thanks!

[lirui...@gmail.com]

在 2018年2月8日星期四 UTC+8上午11:12:52，徐宗巧写道：

> Thanks very much to Justin Israel and Robert White, I had solved the issue already!!
> Like you said, i had install visual studio 2012, and build Cython for maya2014 and maya2016. Both of them are working fine!! Great thanks!

How did you solve it? Could you elaborate on that? I had the same problem

[Robert White]

So you need to get the proper version of visual studio installed.

You'll also want to get pip installed with mayapy.

Then you want to use the command proper VS command prompt for that version.

You need to add the Python libs to LIB, and the headers to INCLUDE, these should be located somewhere in the maya install directory.

At this point you can finally do `pip install cython --no-binary :all:` which will for cython to install itself while building from source, and not using any pre-compiled binaries, which is what you're attempting to avoid.