import matlab.engine fails with linux and a non-standard installation directory

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Richard Black
Richard Black on 14 Mar 2016
Commented: Richard Black on 15 Mar 2016
Hi
I've installed python in $HOME/usr/local and then the matlab link with:
$HOME/usr/local/bin/python setup.py build --build-base="$HOME/temp" install
However when I 'import matlab.engine' in python, I get the error
EnvironmentError: The installation of MATLAB Engine for Python is corrupted. Please reinstall it or contact MathWorks Technical Support for assistance.
I tried setting LD_LIBRARY_PATH=~/usr/local/lib/, and that didn't work. I also noticed that matlabengineforpython2_7.so had not been installed, but I wasn't sure what to do about that
Any suggestions? Do I gave to set any matlab related environment variables?
thanks
Richard

Accepted Answer

Bo Li
Bo Li on 14 Mar 2016
Does your Python version support wide-Unicode?
>>> import sys
>>> if sys.maxunicode > 65535:
... print 'wide-unicde'
... else:
... print 'narrow-unicode'
Following link mentions the System Requirements:
What is the output in verbose mode?
%python -vvv
>>>import matlab.engine
>>>import matlabengineforpython2_7
  1 Comment
Richard Black
Richard Black on 15 Mar 2016
Hi
thanks for your reply. I had to build my version of python...not only did I not add the unicode option, but I also forgot to put the --enable-shared in the configuration step, so there was no libpython2.7.so.1.0
My final configure was:
./configure --enable-unicode=ucs4 --prefix=$HOME/usr/local --exec-prefix=$HOME/usr/local --enable-shared
Anyway, it was loading stuff with python -vvv that helped identify this
thanks again
Richard

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