How can I run my stateflow in Matlab, Simulink?

I have a Macintosh OS. When running the Simulink how can I solve this error: /Applications/MATLAB_R2011a.app/bin/mex -c -O -DMATLAB_MEX_FILE -I/Applications/MATLAB_R2011a.app/toolbox/stateflow/stateflow/ /Applications/MATLAB_R2011a.app/bin/mex: line 305: gcc-4.2: command not found

    mex: compile of ' "cnt_sfun.c"' failed.

gmake: * [cnt_sfun.o] Error 1

Answer 1

[Walter Roberson]

http://www.mathworks.com/support/solutions/en/data/1-FR6LXJ/