How to compile OpenFAST for Simulink

[liruiqi97]

I am trying to use OpenFAST on Simulink on my MacBook. When I was trying to build up the s-function using create_FAST_SFunc, the heading comment in this file tells that "we must have compiled OpenFAST for Simulink to create a DLL".

I have installed OpenFAST and all dependencies via the terminal, and I am trying to run the glue code (e.g. Test01_SIG.m). but I am not sure whether I have complied OpenFAST for Simulink and where the DLL (.so, .dylib, .lib etc) locates. How do we check that?

Thanks for any comment.

[bjonkman]

Do you have a library file called openfastlib in the <installDir>/lib directory (installDir being the variable specified in create_FAST_SFunc.m)?

[liruiqi97]

As for the second problem, I added those two lines in cmake/FindMatlab.cmake as Bonnie advises, but the same error still happens. The error code (same to my previous reply) in Terminal says that Matlab_INCLUDE_DIRS, Matlab_MEX_LIBRARY, Matlab_MEX_EXTENSION are all missing. When I check OpenFAST/build/CMakeCache.txt, those variables are all empty or unset:

I guess I need to set those variables manually, but no idea which values should they be.

[bjonkman]

You could also try getting the updated FindMatlab.cmake file here: https://github.com/Kitware/CMake/blob/master/Modules/FindMatlab.cmake. Also, there is documentation here: https://cmake.org/cmake/help/latest/module/FindMatlab.html.

What version of Matlab are you using?

[liruiqi97]

still encounter the same error... thanks for sharing anyway! I am using MATLAB R2021b with a student license.

[bjonkman]

You could set those variables manually. Matlab_ROOT_Dir should be set to the value of what the matlabroot command returns in MATLAB.

[liruiqi97]

Okay I would have a try. Thanks Bonnie for all your help!

[Melancho7ee]

@liruiqi97 Sorry to bother, but I am wondering if you have solved this problem? I encoutered the same question these days. I dont know how to generate the "mexmaci64" file for OpenFAST-Simulink simulation, could you please help me?

[liruiqi97]

I have solved it and have run it successfully on Simulink on my MacBook. I am glad for giving any help.

[Melancho7ee]

Thanks for your reply, I am wondering how to get the mexmaci64 file. When I try to compile the openfast on my mac, some strange errors occurred (one of them is in the attachment). My mac is based on M1.  Could you please explain your methods? And by the way, are you Chinese? If so, maybe we could communicate in Chinese. Many Thanks for your quick reply. :-) 李佳奇 ***@***.***  

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------------------ 原始邮件 ------------------ 发件人: "OpenFAST/openfast" ***@***.***>; 发送时间: 2022年10月31日(星期一) 晚上9:38 ***@***.***>; ***@***.******@***.***>; 主题: Re: [OpenFAST/openfast] How to compile OpenFAST for Simulink (Discussion #1036) I have solved it and have run it successfully on Simulink on my MacBook. I am glad for giving any help. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: ***@***.***>

[liruiqi97]

I was using cmake to install openfast on my computer, and then used glue-code/simulink/src/create_FAST_SFunc.m to create the FAST_SFunc.mexmaci64 file. Not sure if you have finished the installation and found the location where the files were generated.