Static or Dynamic Library for S-function

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]

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.