[jairoandres]

Hello, I have compiled a standalone Matlab executable that calls OpenFOAM commands using system (ej: system('blockMesh'). When run from Matlab (as a script) it works fine. However, as a standalone app, an error message appears in the terminal (for example for blockMesh: "error while loading shared libraries: libblockMesh.so: cannot open shared object file: No such file or directory"

I have opened a forum post in Matlab but none of the solutions posted so far worked. The link is: https://www.mathworks.com/matlabcentral/answers/1678994-system-commands-requiring-libraries-non-matlab-related-do-not-work-when-executed-from-a-standalone?s_tid=srchtitle

I suppose the error is related to the libraries loaded in the .sh file used to launch the standalone file. It reads:

 echo ---
  LD_LIBRARY_PATH=.:${MCRROOT}/runtime/glnxa64 ;
  LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${MCRROOT}/bin/glnxa64 ;
  LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${MCRROOT}/sys/os/glnxa64;
  LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${MCRROOT}/sys/opengl/lib/glnxa64;

Adding something like:

LD_LIBRARY_PATH=$"/usr/lib/openfoam/openfoam2012/platforms/linux64GccDPInt32Opt/lib/sys-openmpi"

generates a load error when launching the standalone
"libmwlaunchermain.so not found". This is a Matlab library.

Any ideas to launch OpenFOAM libraries along with the standalone app of Matlab?

[olesen]

Try using the wrapper script, this is one of the use cases.
For example, assuming that you have the openfoam meta-package active:

$ openfoam blockMesh
or...
$ openfoam -- blockMesh
or...
$ openfoam  /  blockMesh
or...
$ openfoam  -  blockMesh
or ..
$ openfoam2112 blockMesh
etc..

Should work with a system() call from other programs.

[jairoandres]

Thank you so much. I did not know what the wrapper script was. I executed the system command as "openfoam2012 blockMesh" and worked well. I suppose it should also be the case for any OpenFOAM executable.

Regards,

Jairo

[olesen]

Originally Posted by jairoandres

Thank you so much. I did not know what the wrapper script was. I executed the system command as "openfoam2012 blockMesh" and worked well. I suppose it should also be the case for any OpenFOAM executable.

Regards,

Jairo

Yup, try with "openfoam2012 -help" and you will see that you can use it for an interactive shell session, non-interactively to run an OpenFOAM application, can even use the '-c' option and provide it with a shell command to run.


If you want something without specifying a long installation path, you will also notice that there is a template as "bin/tools/openfoam.in" that you can use sed to replace the @PROJECT_DIR@ token and make your own launcher. For the precompiled packages this is what ends up under /usr/bin/openfoam or /usr/bin/openfoam2012 etc.