Including a DLL which was generated with MATLAB Coder

Hello,

I generated a very basic DLL following the instructions (https://de.mathworks.com/help/coder/gs/generating-c-code-from-matlab-code-using-the-matlab-coder-project-interface.html) only changing for DLL instead of LIB. The file "distance.m" looks like this:

function res = distance(a, b)
res = b-a;
end

Then I tried to include it in my Visual Studio 2022 Project which just consist of

#include <iostream>
#include "distance.h"
int main()
{
    distance(1, 2);
}

I followed the instructions here (https://learn.microsoft.com/en-us/cpp/build/walkthrough-creating-and-using-a-dynamic-link-library-cpp?view=msvc-170) to include the directory.

When I build the project, it gives me the Linker Tools Error LNK2001: unresolved external symbol "__IMPORT_DESCRIPTOR_distance" (and following LNK1120).

I already tried it with a basic DLL generated in VS with no problems at all. I only fail with DLLs generated with MATLAB Coder.

Can someone help me with this?

Thanks in advance!

Philipp

[Infinite_king]

Make sure that you are using the same compiler to generate the DLL. Could you confirm which compiler you used when generating the DLL with MATLAB Coder?

[Philipp]

I think that is the problem. I'll try it with the VS compiler as soon I got VS installed and let you know the results.

[Philipp]

Sorry for the late answer, I had some license issues with VS.

Using the VS compiler for the DLL fixed the problem.

Answer 1

[Mukund Sankaran]

Hello Philipp,

There's an example in our documentation that walks through the steps for integrating a DLL generated by MATLAB Coder with a Microsoft Visual Studio project. Have you given that a try ?