Matlab命令mex -setup找不到C语言编辑器

我使用的是mac版R2009B，输入mex -setup

>> mex -setup

    Options files control which compiler to use, the compiler and link command
    options, and the runtime libraries to link against.

    Using the 'mex -setup' command selects an options file that is
    placed in ~/.matlab/R2009b and used by default for 'mex'. An options 
    file in the current working directory or specified on the command line 
    overrides the default options file in ~/.matlab/R2009b.

    To override the default options file, use the 'mex -f' command
    (see 'mex -help' for more information).

The options files available for mex are:

1: /Applications/MATLAB_R2009b.app/bin/gccopts.sh : 
    Template Options file for building gcc MEX-files

2: /Applications/MATLAB_R2009b.app/bin/mexopts.sh : 
    Template Options file for building MEX-files via the system ANSI compiler

0: Exit with no changes

Enter the number of the compiler (0-2):

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没有自己安装的gcc 4.16也没有Xcode？

有大牛知道如何解决。

Answer 1

[Honglei Chen]

Did you install gcc or Xcode? If not, you need to install them. If you did, you need to check if they are on your path.

[Zihao]

how can I check? In matlab command window, or terminal?

Answer 2

[Ken Atwell]

R2009b supported Xcode version 3.1:

<http://www.mathworks.com/support/compilers/R2009b/macintosh.html>

You will not be able to find this older version on the App Store, but maybe you can find it in the Apple Developer's site, likely behind a developer log-in.