Hi Max,
this warning is essential:
Compilation of generated C code main file not thoroughly tested under Windows. Attempting to continue.
Since it is not tested and also not needed for Simulink, I disabled using the Makefile on Windows.
The Sfunctions are built using the make_sfun* functions.
You can just run the rest of the Simulink example (from cd c_generated_code onwards)
or checkout this version:
Best,
Jonathan