what is it mex setup?

hi everyone.. I have a code which I need to check if it's work. I got an error : Error using loadlibrary (line253) A 'Selected' compiler was not found. You may need to run mex -setup. I really don't know first of all 1) what is it "mex setup" and why do I nees it? and second of all 2) what I need to do to make this mex setup to work?

thanks everybody Matan.

[Dhanyatha]

What version of MATLAB are you using?

Answer 1

[James Tursa]

The mex setup process will let MATLAB configure the proper compiler files for mexing your code. Do this at the MATLAB command line prompt:

mex -setup

Then press Enter

Then enter the number of the compiler you want to use (such as lcc if you are on a 32-bit machine).

Then press Enter again.

This is a one-time process. Once the compiler files are configured, you do not need to do this again unless you want to change compilers.