calling Matlab from Fortran using terminal

Hi,

My objective is to call a matlab function within a fortran code by using the terminal and not Matlab command window. So, I tried to follow this example: https://www.mathworks.com/help/matlab/matlab_external/build-and-run-fortran-engine-applications-on-linux.html

I executed the command

mex -v -client engine fengdemo.F

in terminal. This creates an executable file called fengdemo

I set the library path using the following command format as mentioned here: https://www.mathworks.com/help/matlab/matlab_external/set-run-time-library-path-on-linux-systems.html

LD_LIBRARY_PATH=matlabroot/bin/glnxa64:matlabroot/sys/os/glnxa64:LD_LIBRARY_PATH

export LD_LIBRARY_PATH

PATH=matlabroot/bin:$PATH

export PATH

After I try to execute fengdemo by typing

./fengdemo

However, I have this error:

./fengdemo: error while loading shared libraries: libmx.so: cannot open shared object file: No such file or directory

I checked that glnxa64 is correctly located in matlabroot/sys/os. I don't know why I get these errors.

And finally, I would like to know how the command

gfortran -o binary_fengdemo fengdemo.F

used for fortran programs not including a call to matlab functions can be adapted for fortran programs including matlab calls.

Answer 1

[Suvansh Arora]

In order to run MATLAB code within a FORTRAN code by using a Linux Terminal, follow the procedure mentioned below:

• Make sure you can run any simple FORTRAN program using Linux Terminal, follow the below mentioned article for more details: https://fortran-lang.org/en/learn/quickstart/hello_world/
• Make sure you can run MATLAB Function from Linux Terminal, follow the below mentioned article for more details: run-matlab-function-with-arguments-on-linux-terminal
• In order to know more about calling MATLAB code from Fortran program follow the article mentioned below: calling-matlab-engine-from-fortran-programs.html
• Simple program to illustrate, calling of MATLAB Engine function from a FORTRAN program: engopen_fortran.html#mw_7d2d018c-2868-4a73-9d06-46fe42607023

[mary]

Thank you Suvansh. However, I was aware of those links. I am able to run Fortran and Matlab functions from terminal.

My problem is that fengdemo does not work and I don't know why. I tried to execute a simpler example that is given here: https://www.mathworks.com/matlabcentral/answers/562883-how-do-i-call-use-the-matlab-engine-from-a-fortran-program but I had errors. I would be grateful if you tell me how to solve these errors.

[Suvansh Arora]

One of the possible workarounds of the above-mentioned stack trace is mentioned in the article below:

How to workaround "error while loading shared libraries: libssl.so.1.0.0: cannot open shared object file: No such file o... - MATLAB Answers