C Code Generation Error of a Simulink Model

When I make a grt code using simulink code generator, there are multiple errors regarding the output_wrapper function. since I used S-function in my model, the c code of these of functions are recognizable for the code generator but their corresponding output_wrapper functions are not.

Do you know what should I do to tackle this problem?

[Kaustubha Govind]

Your question is not very clear to me, but if I understand this correctly, you are using non-inlined S-functions and might need to inline them (see Inlining S-Functions) to fix the problem.