How do I disable the unsupported compiler warning message generated by the MEX command in MATLAB 7.13 (R2011b)?

I am using GCC 4.4.1, which is an unsupported compiler for MATLAB 7.13 (R2011b). When I type the following command in MATLAB

mex yprime.c

 I receive a warning message:

 Warning: You are using gcc version "4.4.1". The version

          currently supported with MEX is "4.3.4".

          For a list of currently supported compilers see:

 <http://www.mathworks.com/support/compilers/current_release/>

I tried to disable this warning using the following MATLAB command

warning off last

 but receive an error message:

 Error using warning

 The last warning issued had an empty warning identifier, or no

 warnings have yet been issued.

I would like to disable this warning message.

Answer 1

[MathWorks Support Team]

The ability to suppress this warning message is not available inside MATLAB.

To work around this issue,

1. Open the file named "mex" found in the $MATLABROOT/bin directory, where $MATLABROOT is the MATLAB root directory on your machine, as returned by executing the following at the MATLAB Command Prompt:

matlabroot

2. Navigate to Lines 402-409 of the file. The error message is being printed from the if-statement contained on these lines:

if (need_to_warn == 1)

           {

                 printf("\n");

                 printf("Warning: You are using gcc version \"%s\".  The version\n", version_number);

                 printf("         currently supported with %s is \"%s\".\n", toolName, versions[2]);

                 printf("         For a list of currently supported compilers see: \n");

                 printf("         <http://www.mathworks.com/support/compilers/current_release/\n\n http://www.mathworks.com/support/compilers/current_release/\n\n">);

           }

Commenting the above lines of code will suppress the warning in MATLAB.