MATLAB: Error at Mex on MacOS10.09 Xcode 6.2 Matlab2012a

macos10.9 xcode6.2 matlab2012a c mex compiler

Dear all,
I tried to compile some C files in matlab, and i got this error, llvm-gcc-4.2: command not found following this link, Now i get this error, error: unknown type name 'char16_t'
Thank you in advance, Jacob