How to use matlab 2012b with Xcode4.6 compiler on a mac?

Hello, I have a problem while trying to compile a cpp file with matlab 2012b (and I also tried with 2011b but it's the same), the error I get is:

    mex:  autoc.cpp  not a normal file or does not exist.

    Error using mex (line 206)
    Unable to complete successfully.

I already tried all the steps described in http://www.mathworks.co.uk/support/solutions/en/data/1-FR6LXJ/ using Xcode 4.6 but it still doesn't work. Anyone can tell me if there is anything else I can try?

Thanks!

[Walter Roberson]

use

!ls -l autoc.cpp

to check that the file exists and is a file and not a directory or device.

When you are using ls -l, the very first character of output for a normal file will be '-' right at the beginning of the permissions list, such as

-rw-rw-rw-

whereas for a directory the character will be 'd' and for a character device it will be 'c' and for a block device it will be 'b'.