MATLAB: I am getting a make error when used the M-fuction in simulink for code generation. why? (Matlab 2012b)

Question

the simple m-fuction has this code:

function y = fcn(p,v)
  %#codegen
  if (p==1 && v==1)
    u=1;
  else
    u=0;
  end
  y = u;

I am getting this error:

Making simulation target "untitled1_sfun", …

'untitled1_sfun.bat' is not recognized as an internal or external command, operable program or batch file.

Answer 1

You probably need to use

mex -setup

to set your compiler.