https://github.com/cuixing158/mex-file

MATLAB MEX file For C/C++ code generation
https://github.com/cuixing158/mex-file

c code-generation compile cpp matlab matlab-coder mex opencv

Last synced: about 1 month ago
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MATLAB MEX file For C/C++ code generation

• Host: GitHub
• URL: https://github.com/cuixing158/mex-file
• Owner: cuixing158
• Created: 2023-08-12T03:55:04.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2024-04-08T03:42:51.000Z (11 months ago)
• Last Synced: 2024-11-12T14:13:46.169Z (3 months ago)
• Topics: c, code-generation, compile, cpp, matlab, matlab-coder, mex, opencv
• Language: MATLAB
• Homepage:
• Size: 96.7 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# MATLAB MEX file For C/C++ code generation

[![View mex-file-code-generation on File Exchange](https://www.mathworks.com/matlabcentral/images/matlab-file-exchange.svg)](https://ww2.mathworks.cn/matlabcentral/fileexchange/133742-mex-file-code-generation)

[![Open in MATLAB Online](https://www.mathworks.com/images/responsive/global/open-in-matlab-online.svg)](https://matlab.mathworks.com/open/github/v1?repo=cuixing158/mex-file&file=OpenCV_API.m)

![logo](images/logo.jpg)

## OverView

In order to call external C/C++ library functions, it is generally recommended to use the [mex](https://ww2.mathworks.cn/help/matlab/ref/mex.html) built-in function to compile the source code into a mex executable file, but the disadvantage is that it is not easy to generate C/C++ code in turn if there are other matlab code mixed in. This example is just to show how to use [codegen](https://ww2.mathworks.cn/help/coder/ref/codegen.html) two-way through this process, not limited to the example itself, is a general method, another advantage is not limited to the code generation of various restrictions, fully integrated with C/C++ programming.

## Requirements

- MATLAB®

- Matlab Coder toolbox™

- [Supported and Compatible Compilers](https://ww2.mathworks.cn/en/support/requirements/supported-compilers.html)

- Your External C/C++ Library(This example uses OpenCV as an example)

## How to setup

### 1.Configuring the compiler

In the command window,configure your complier.

```matlab

mex -setup C++ 

```

### 2.Source Code Preparation

Prepare your C/C++ code and MATLAB entry-point function.Prepare the implementation of the `updateBuildInfo(buildInfo, buildContext)` member function, rewritten according to the path of the external library. (header files and library files).

### 3.Generate or Compile

Generate or compile the files you want with the `codegen` command.

For example:

```matlab

imagePath = "./test_480x640x3.jpg";

input1 = coder.typeof(imagePath);

input1.StringLength=inf;

codegen -config:mex imread_opencv -args {input1}  -lang:c++ -report

```