Missing libgfortran.so.3 for JModelica FMU on Linux about fmi-cross-check

[filip-stenstrom]

[FATAL][FMICAPI] Could not load the DLL: libgfortran.so.3: cannot open shared object file: No such file or directory

This signifies that the dynamic loader can't find libgfortran, and since it works on your machine which runs travis, your environments are most likely different.

If you unpack the ControlledTemperature.fmu and then call ldd on the .so file, you'll probably find that libgfortran.so can't be found.

ldd ControlledTemperature.so

I'd try to re-install and make sure "apt-get install libgfortran3" shows that fortran is installed

[AnHeuermann]

Indeed I didn't had the right version of libgfortan on my machine. Thanks for the help!

[sjoelund]

I would actually reopen this since you must package all dependencies in the FMU and libgfortran3 is not available on all Linux base distributions.

[AnHeuermann]

Any news on this issue?

The libgfortran3 dependency is breaking my automated tests for a Julia FMU simulator I'm working on.

The runner I'm using doesn't has libgfortan3. While I could add it for now that doesn't really solve the problem.
As soon as the GitHub actions CI changes to Ubuntu Focal runners it will no longer be possible to install gfortran 3 on them and my tests will fail again.

According to #99 it is fine for FMUs to have external dependencies.
So my only option as a FMU importer is to skip all JModelica.org tests since they can't run anyway. But what is the point of the cross-check then if it is not possible to import these FMUs?

So my suggestion is to add nonCompliantWithLatestRules to all JModelica.org FMUs that depend on libgfortran.so.3.