#StackBounty: #environment-variables #libraries #matlab #boost Set LD_LIBRARY_PATH correctly

Bounty: 100

I am using Docker with image of Ubuntu 16.04. I am using this docker to run:

  • Import C++ classes in python with the help of boost.python
  • Import matlab’s python package in python with the help Matlab Runtime (MCR).

Before I have installed MCR in the docker, I have installed boost using:

$ sudo apt-get install -y libboost-all-dev

and I was able to wrap C++ classes and call them in python. Then I have installed MCR and one of the requirement is to set LD_LIBRARY_PATH to Matlab’s library.

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/MATLAB/MATLAB_Runtime/v94/runtime/glnxa64:/usr/local/MATLAB/MATLAB_Runtime/v94/bin/glnxa64:/usr/local/MATLAB/MATLAB_Runtime/v94/sys/os/glnxa64:/usr/local/MATLAB/MATLAB_Runtime/v94/extern/bin/glnxa64

It worked, I was able to run matlab’s python package in python but testing the C++ classes wrappers failed due to change of LD_LIBRARY_PATH. For example, I get the following error when I try to import C++ class in python:

 /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0: undefined symbol: XML_SetHashSalt

If I unset LD_LIBRARY_PATH C++ import works but MCR fails. So the question what LD_LIBRARY_PATH should be in order to run both C++ classes and Matlab’s python package successfully?

I have tried to add path to boost libraries to LD_LIBRARY_PATH but didn’t work, so the env value would be:

/usr/lib/x86_64-linux-gnu:/usr/local/MATLAB/MATLAB_Runtime/v94/runtime/glnxa64:/usr/local/MATLAB/MATLAB_Runtime/v94/bin/glnxa64:/usr/local/MATLAB/MATLAB_Runtime/v94/sys/os/glnxa64:/usr/local/MATLAB/MATLAB_Runtime/v94/extern/bin/glnxa64

EDIT

the dependencies of C++ library file before setting the LD_LIBRARY_PATH:

    linux-vdso.so.1 (0x00007ffcee0dc000)
    libpython3.4m.so.1.0 => /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0 (0x00007f9d69e59000)
    libboost_python-py34.so.1.55.0 => /usr/lib/x86_64-linux-gnu/libboost_python-py34.so.1.55.0 (0x00007f9d69c09000)
    libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f9d698fe000)
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f9d695fd000)
    libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f9d693e7000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f9d6903c000)
    librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f9d68e34000)
    libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f9d68c0b000)
    libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f9d689f0000)
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f9d687d3000)
    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f9d685cf000)
    libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007f9d683cc000)
    /lib64/ld-linux-x86-64.so.2 (0x00007f9d6a6c3000)

After setting the LD_LIBRARY_PATH:

    linux-vdso.so.1 (0x00007ffc42e9b000)
    libpython3.4m.so.1.0 => /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0 (0x00007fad9635b000)
    libboost_python-py34.so.1.55.0 => /usr/lib/x86_64-linux-gnu/libboost_python-py34.so.1.55.0 (0x00007fad9610b000)
    libstdc++.so.6 => /usr/local/MATLAB/MATLAB_Runtime/v94/sys/os/glnxa64/libstdc++.so.6 (0x00007fad95d8a000)
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fad95a89000)
    libgcc_s.so.1 => /usr/local/MATLAB/MATLAB_Runtime/v94/sys/os/glnxa64/libgcc_s.so.1 (0x00007fad95873000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fad954c8000)
    librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fad952c0000)
    libexpat.so.1 => /usr/local/MATLAB/MATLAB_Runtime/v94/bin/glnxa64/libexpat.so.1 (0x00007fad95095000)
    libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fad94e7a000)
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fad94c5d000)
    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fad94a59000)
    libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007fad94856000)
    /lib64/ld-linux-x86-64.so.2 (0x00007fad96bc5000)


Get this bounty!!!

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