or-tools installation on CentOS

[Nikita Zubrilov]

I tried to use or-tools for Linux in CentOS 7, but had a lot of problems with dependencies (different gcc version, different libc version etc...)

For example "Exception in thread "main" java.lang.UnsatisfiedLinkError: /opt/solver/libs/libjniortools.so: /lib64/libstdc++.so.6: version `CXXABI_1.3.8' not found (required by /opt/solver/libs/libjniortools.so".

 

When tried on Ububtu 16.04 everithing was smooth, I needed to install only Java 8 to start working.

Did someone face the same problems?  Did someone tried to use or-tools on CentOS?

Thanks,

Nik

[Laurent Perron]

Hi, 

Different linux distributions are not binary compatible.

You need to rebuild from sources.

Follow the instructions to build from sources. 

then

make python

make pypi_archive

cd temp-python<python_version>/ortools

python setup.py bdist_egg

will create the egg file for you to install.

Laurent Perron | Operations Research | lpe...@google.com | (33) 1 42 68 53 00

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[Nikita Zubrilov]

Thanks for your quick reply. 

My use case is loading libjniortools.so in java application and then use its functionality, so I basically need only 2 libraries libjniortools.so and libortools.so.

(In Windows I need only jniortools.dll).

Is your solution good for my case? I mean, after procedure you proposed, can I take only those 2 libraries and load them on ContOS from Java program?

Thank you! 

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