How to run a Matlab function as a standalone executable

If you have a function, you can compile and run it without Matlab.
To do that, just write a .m file like test_cpu.m and leave it as follows:

function [time]= test_cpu(n)
if isdeployed
     n=str2double(n);
end
A = rand(n,n);
tic;
fft(A);
time = toc;
disp(time);

It's important check is the file is deployed (compiled) to convert the argument to double for avoid this error:

Error using rand
CLASSNAME input must be a class that supports RAND, for example, 'single' or 'double'.

Error in test_cpu (line 2)


MATLAB:rand:invalidOutputType

Now, compile the file with the following command in your matlab cli:

mcc -m test_cpu.m -o test_cpu

To run the executable, you will get these errors:

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

./test_cpu: error while loading shared libraries: libmwmclmcrrt.so.9.0.1: cannot open shared object file: No such file or directory

You can find these libraries with locate command and and them to your LD_LIBRARY_PATH:

locate libmwlaunchermain
/usr/local/MATLAB/R2016a/bin/glnxa64/libmwlaunchermain.so
locate libmwmclmcrrt.so.9.0.1
/usr/local/MATLAB/R2016a/runtime/glnxa64/libmwmclmcrrt.so.9.0.1

export LD_LIBRARY_PATH=/usr/local/MATLAB/R2016a/bin/glnxa64/:/usr/local/MATLAB/R2016a/runtime/glnxa64/

Now, you could run your executable with an argument:
./test_cpu 3000

Enjoy it!