How to call a .dll in the code generation process of C S-Function

When I use Simulink real-time and build model, my C sfunction needs to call a .dll file.

How to call it correctly？

Answer 1

[Diego Kuratli]

It is not possible to call DLL libraries with Simulink Real-Time.

R2020a and older releases: dynamic libraries are not supported

R2020b and newer: the new RTOS is POSIX compliant, dynamic libraries can be integrated as .SO files (DLLs are Windows-based files and are not supported). The .SO file has to be on the target computer drive.

[jianshen li]

Thank you.

When I run on the target machine after compiling, I have the following problems in the hyperlink.Is this because my model relies on the third-party library FAST_Library_Win32.dll?

https://www.mathworks.com/matlabcentral/answers/758329-invalid-simulink-object-name-loader-xpc-unable-to-load-dependent-module-fast_library_win32-dl

Thank you again！