How to create a dll from a Matlab code

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isazetl
isazetl 2014-11-27
回答： Crystal Li 2019-2-19
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 !
  2 个评论
Ryan Livingston
Ryan Livingston 2014-12-2
编辑：Ryan Livingston 2014-12-2
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
Farhad VISHKAEE 2016-6-22
编辑：Farhad VISHKAEE 2016-6-22
Hello,
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:
https://www.mathworks.com/matlabcentral/answers/uploaded_files/31889/MATLAB%20-%20C.pdf
Good luck ;)

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回答（2 个）

Jorik
Jorik 2014-12-4
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:
MATLAB Coder
MATLAB Compiler
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 2019-2-19
I have the similar questions. May I ask how to do it? Thanks in advance!
https://ww2.mathworks.cn/matlabcentral/answers/445511-how-to-hybrid-programming-to-dll-file

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