Matlab MEX 使用笔记

最新推荐文章于 2021-11-02 19:37:56 发布

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最新推荐文章于 2021-11-02 19:37:56 发布 · 1w 阅读

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本文介绍了在Matlab中如何使用MEX调用C/C++或Fortran代码，包括编译器设置、编译文件及调用过程。遇到的主要问题是需要匹配合适的编译器，如Intel Fortran，并可能需要自定义编译脚本。MEX文件本质上是一个导出mexFunction的动态链接库，遵循DLL编译规则。

Matlab 中使用 C/C++ 或 Fortran 代码的一种方式是利用 mex 进行编译，然后调用。

1 编译器设置

mex -setup

有可能见到的信息是这个样子：

>> mex  -setup
 
Welcome to mex -setup.  This utility will help you set up  
a default compiler.  For a list of supported compilers, see  
http://www.mathworks.com/support/compilers/R2012b/win64.html 
 
Please choose your compiler for building MEX-files: 
 
Would you like mex to locate installed compilers [y]/n? y
 
No supported SDK or compiler was found on this computer. 
For a list of supported compilers, see  
http://www.mathworks.com/support/compilers/R2012b/win64.html  
 
Error using mex (line 206)
Unable to complete successfully.

Matlab 无法完成自动搜索编译器，可以选择 n 再尝试。

Welcome to mex -setup.  This utility will help you set up  
a default compiler.  For a list of supported compilers, see  
http://www.mathworks.com/support/compilers/R2012b/win64.html 
 
Please choose your compiler for building MEX-files: 
 
Would you like mex to locate installed compilers [y]/n? n
 
Select a compiler: 
[1] Intel C++ 12.0 (with Microsoft Software Development Kit (SDK) linker) 
[2] In