Create dll libraries for C++ multiple functions in a script

Hello,

I have been testing with matlab coder tool in order to create a dll library for some functions I have saved in one script. So far, I dont understand very well how does this work, cause coder creates a folder with multiple scripts and files which very confusing for me. My problem is this:

I'm translating a code from matlab to cpp but because of this functions are quite long with large numbers, I wouldl like to convert them into a dll and then include it in my cpp project.

Sorry if its simple but I'm new to cpp so its being quite hard for me to understand.

First, is this a good approach to solve the problem?

Second, is possible to save the script in one dll?

Attached my script

Thanks in advance for helping!

Answer 1

[Shubham]

Hello Mikel,

Regarding your first question, creating a DLL (Dynamic Link Library) is a good approach to solve your problem if you want to reuse your MATLAB code in a C++ project. By doing so, you can create a bridge between the two languages, allowing you to call your MATLAB functions from your C++ code.

As for your second question, you cannot simply save your MATLAB script as a DLL. The MATLAB Coder generates C++ code from your MATLAB code, which you then compile into a DLL. This generated C++ code will contain multiple files, including header files, source files, and a Visual Studio project file.

I recommend that you start by generating the C++ code using MATLAB Coder, then compiling it into a DLL using Visual Studio (or another C++ compiler). Here's a brief overview of the steps involved:

1. Open MATLAB and load your MATLAB code.
2. Use the MATLAB Coder app or the command line interface to generate C++ code from your MATLAB code. This will create a folder containing the generated C++ files.
3. Open the Visual Studio project file in the generated folder.
4. Build the project to create a DLL.
5. Once you have the DLL, you can link it to your C++ project and call your MATLAB functions as if they were native C++ functions.

However, keep in mind that not all MATLAB functions can be easily converted to C++ functions. For example, some MATLAB functions use data types that are not supported in C++. Also, depending on the complexity of your code, you may need to manually edit the generated C++ code to make it more suitable for your needs.

I hope this helps!

[Mikel]

Thank you!! It helped me!