How to use fmincon inside a level-2 matlab function in Simulink external mode?

Hi everybody,

I am trying to use fmincon inside a level-2 matlab function in Simulink real-time, using external mode.

Unfortunately, I got an error since the corresponding .tlc file is not found.

The corresponding 'test_opt_fun.tlc' file for the MATLAB S-function 'test_opt_fun' in block 'test_opt/MATLAB file (level-2) S-Function' must be located in the current working directory, the MATLAB S-function directory 'C:\Users\...\test_level2_matlabfun', or the directory 'C:\Users\...\test_level2_matlabfun\tlc_c'

How can I solve the problem? Is there a way to make Simulink automatically generate the .tlc file?

Or is there any other workaround to be able to use fmincon in Simulink real-time (external mode)?

Thank you very much in advance.

Best,

Lorenzo