一直没法在matlab页面上面安装，只好找手动的安装方法，在matlab资源网上的评论区看到的，希望对大家有用，欢迎点赞。
How to Install TDM-GCC Compiler (step-by-step)
Note: I have MATLAB R2017a
Step 1: Visit the following link and install the latest version of the TDM-GCC Compiler (in my case the latest version available, as of 16/07/2020, was: TDM-GCC 9.2.0 release): 去下面的连接下载GCC软件 Link: https://jmeubank.github.io/tdm-gcc
The default installation location will be: C:\TDM-GCC-64
Step 2: In MATLAB command prompt, type and run: 在matlab命令行输入 setenv(‘MW_MINGW64_LOC’,‘C:\TDM-GCC-64’)
Step 3: In MATLAB command prompt, type and run: 在matlab命令行输入开始安装 mex -setup
然后就可以开心使用了，比如 mex rir_generator.cpp （mex 加上你要编译的文件）
cite from:https://ww2.mathworks.cn/matlabcentral/fileexchange/52848-matlab-support-for-mingw-w64-c-c-compiler?s_tid=mwa_osa_a
