Clear Filters
Clear Filters

How to create a dll from a Matlab code

170 views (last 30 days)
isazetl on 27 Nov 2014
Answered: Crystal Li on 19 Feb 2019
Hello everyone,
I'm new on this forum, and I need your help on a problem.
I do not know if the title of the topic is very clear, so I will explain a little more my problem.
I made one or more functions on MATLAB in .m .
My goal is to use these function(s) via an editing HMI software. This software has a "function" that allows to import a dll library, then use one or more C functions by specifying different parameters.
So for that, I must first convert my .m in .c then create a dll all from Matlab ( because I have to add to MCR install the redistributable etc ...) tell me if I'm wrong, I'm discovering the dll ...
What I 've done for now :
I tried to use Matlab Coder to create a dll, stating clearly in the Build tab in settings , "C / C ++ Dynamic Library" for output type . Only I do not get a dll, but "only" the .h and .c files , here is an example of what I get:
With Matlab Compiler, I managed to create a dll from a .m code which gives me this:
I can import the dll library in the HMI software but I can not use functions included in the DLL , the software "does not find the function".
I am using Matlab R2012b .
If anyone sees what am I doing wrong ...
Thank you for helping me !
Ryan Livingston
Ryan Livingston on 2 Dec 2014
Edited: Ryan Livingston on 2 Dec 2014
Is the "Generate code only" check box checked on the "Build" tab? If you uncheck that, the generated code should be compiled into a DLL.
Farhad VISHKAEE on 22 Jun 2016
Edited: Farhad VISHKAEE on 22 Jun 2016
Using this technique, you will then need a wrapper to generate your DLL.
Please follow the instruction in this PDF which directly goes to a stand alone DLL:
Good luck ;)

Sign in to comment.

Answers (2)

Jorik on 4 Dec 2014
MATLAB Coder and MATLAB Compiler are very different products, but both can indeed generate a DLL for interfacing with other applications. The product pages explain the use cases for these products quite well:
For MATLAB Coder the target must indeed be set to "C / C ++ Dynamic Library" in the project and the generated code must also be built (uncheck "Generate code only". The DLL is then generated in the codegen/dll/[project] directory, the following code generates a DLL for a shipping demo file hello_world.m
>> coderdemo_setup('coderdemo_hello_world');
>> codegen -config:dll hello_world
And then you should have a codegen/dll/hello_world/hello_world.dll.

Crystal Li
Crystal Li on 19 Feb 2019
I have the similar questions. May I ask how to do it? Thanks in advance!


Find more on MATLAB Coder in Help Center and File Exchange


Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!