Static or Dynamic Library for S-function

Question

Qusay Hawari 2021-11-30

回答： Pratyush 2024-5-17

Hi,

I am trying to create an S-function to link OpenFAST with Simulink.

I succefully compiled the build libraries using CMake (on Mac OS).

However as I compiled the main .m file to create the Sfunction is face this error:

I read here https://github.com/OpenFAST/openfast/issues/208 that the issue can be due to the use of static (.a) libraries instead of synamic (.dylib).

My question is that can I create the Sfunction with static librairies, if so, how can I fix the issue?

Thanks in Advance

Qusay.

Answer 1

Pratyush 2024-5-17

Hi Qusay,

To create an S-function in MATLAB/Simulink that links with OpenFAST using static libraries (.a) on macOS, follow these steps:

Ensure static libraries are compiled for the correct target architecture and version of macOS, specifying architecture flags if necessary.
Write your S-function using the appropriate MATLAB API, typically the MEX-function API for C/C++ code.
Include static libraries and necessary directories in your "mex" compilation command, specifying include paths, library paths, and the library names.
Manually link all dependent static libraries in the correct order since static libraries don't automatically include their dependencies.
For complex configurations, consider customizing the "mex" build settings through "mexopts.sh" or "mexopts.bat" files to adjust compiler and linker settings.
Ensure correct paths, compatible architectures between libraries and the S-function.