Building a MEX function that depends on a .dll, .lib, and headers?

Hello,

I have a C++ function that depends on a.dll, a.lib (import library), and some include directory. This function works fine in Microsoft Visual Studio as I can tell MSVC where my headers and libraries are.

I have put this functionality inside a "MEXFunction" and I would like to build it so that it's accessible form MATLAB. However, I don't know how to tell mex to link against third party dll, lib, and header files.

Thanks for any assistance!

Answer 1

[Maadhav Akula]

I hope these links might be helpful:

https://in.mathworks.com/matlabcentral/answers/99915-can-i-call-an-external-shared-library-dll-from-a-matlab-mex-file

https://in.mathworks.com/matlabcentral/answers/103012-how-can-i-call-a-dll-or-shared-library-function-using-mex-files-instead-of-the-generic-dll-shared

[Baptiste]

Hi ! I took a look on those links but I'm still in the fog because I don't see how useful is the .dll file here while you call directly the library...

So here a resume :

1) From a project in another folder, whee the are already a complete and working project, I generated a c++ dll file using a visual dll project, let's call it "Lena.dll"

2) I create another folder for matlab simulink and create "lena.c" with the S-functions calling the c++ functions I know from the project, and "MexLena.m" where there are the following lines :

mex -v -g Lena.c Lena.lib

3) I put "Lena.dll" in the same folder than "Mexlena.m"

---> Don't work ! It request the Lena.lib

4) So I move Lena.lib in the folder :

---> Don't work ! It request the headers of the projec.

5) I move the headers, but I think seriously that normally, only the dll must be enought to work for the software

---> Work !

6) Delete the dll to see if I really use the dll file

--> Work too, so I don't use the dll in fact....

What to do to use the dll without moving the library and the headers from the other folder ? :/

Where I do the misstep ? At 4) ?