Error while trying to use matlab engine

I am trying to install matlab engine on a conda environment in Fedora.

When I try to import matlab.engine on a jupyter notebook, I get the following error:

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

OSError Traceback (most recent call last)

Cell In[1], line 1

----> 1 import matlab.engine

2 eng = matlab.engine.start_matlab()

File ~/anaconda3/envs/dbs2/lib/python3.10/site-packages/matlabengine-24.2-py3.10.egg/matlab/engine/__init__.py:82

79 secondExceptionMessage = str1 + str2

81 if secondExceptionMessage:

---> 82 raise EnvironmentError(secondExceptionMessage)

85 """

86 This lock can make sure the global variable _engines is updated correctly in

87 multi-thread use case. Also, it guarantees that only one MATLAB is launched

88 when connect_matlab() is called if there is no shared MATLAB session.

89 """

90 _engine_lock = threading.RLock()

OSError: Please reinstall MATLAB Engine for Python or contact MathWorks Technical Support for assistance:

First issue: /home/arka/anaconda3/envs/dbs2/lib/python3.10/site-packages/zmq/backend/cython/../../../../.././libstdc++.so.6: version `GLIBCXX_3.4.30' not found (required by /usr/local/MATLAB/R2024b/extern/engines/python/dist/matlab/engine/glnxa64/../../../../../../../bin/glnxa64/libmwengine_api.so)

Second issue: /home/arka/anaconda3/envs/dbs2/lib/python3.10/site-packages/zmq/backend/cython/../../../../.././libstdc++.so.6: version `GLIBCXX_3.4.30' not found (required by /usr/local/MATLAB/R2024b/extern/engines/python/dist/matlab/engine/glnxa64/../../../../../../../bin/glnxa64/libmwengine_api.so)

Answer 1

[Harsh]

Hi @Arkaprava,

It seems "libmwengine_api" requires version symbols up to "GLIBCXX_3.4.30".

However, the "libstdc++" library included with the installed MATLAB R2024b does not provide "GLIBCXX_3.4.30". You can try running the following command in the linux console to check the "libstdc++" library versions featured with the MATLAB version installed in your machine.

$ strings /usr/local/MATLAB/R2024b/bin/glnxa64/../../sys/os/glnxa64/libstdc++.so.6 | grep 

In order to resolve this issue, I would recommend you to reinstall reinstall MATLAB Engine for Python.

You can also try directing MATLAB to use the "libstdc++" library included with OS (Fedora 38 and Fedora 39 include "GLIBCXX_3.4.30") by setting an environment variable before starting MATLAB. Please refer to the following MATLAB Answers post for more information:

https://www.mathworks.com/matlabcentral/answers/1907290-how-to-manually-select-the-libstdc-library-to-use-to-resolve-a-version-glibcxx_-not-found

Please note that as MATLAB R2024b Update 6 comes with "GLIBCXX_3.4.30", this issue will be resolved if you simply upgrade to MATLAB R2024b Update 6.

I hope this helps, thanks!