mex can't find gcc in path

Matlab-mex can't find my C compiler, even though it appears to be using the correct command. Observe:

In Matlab: >> mex foo.c /Applications/MATLAB_R2011a.app/bin/mex: line 305: gcc-4.2: command not found /Applications/MATLAB_R2011a.app/bin/mex: line 1041: gcc-4.2: command not found

In Terminal: $which gcc-4.2 /Developer/usr/bin/gcc-4.2

Any idea how to get mex to find the compiler? I'm using Mac OS Lion and 2011a.

Answer 1

[Robert]

I figured it out. All I had to do is run: sudo ln -s /Developer/usr/bin/gcc-4.2 /usr/bin/gcc-4.2

The problem was that /Developer/usr/bin/ is in my Terminal path, but apparently not in mex's path when looking for a compiler.

Answer 2

[Nathan]

For anyone (like me) that the above fix did not work for, download the patch discussed here: http://www.mathworks.com/support/solutions/en/data/1-FR6LXJ/

And make the modification to mexopts.sh described here: http://www.mathworks.com/matlabcentral/newsreader/view_thread/317343

Those two did the trick for me.

Answer 3

[Shahab]

Thank you Nathan :) it is exciting.