S Function Builder External mode error

Dear All!

I have a problem with S-Function Builder in SIMULINK.

Whenever i insert any function or library like <Arduino.h>, it gives some error in external mode connected with Arduino (Text file of the error is attached). However it works fine when it is empty or no functions or libraries are included. A picture is also attached of the s-function builder.

I have already gone through some posts and applied the follwoing corrections but i am getting the same error again and again

• The file directory has no spaces, D:\Sfunctions\firstcode.slx .
• The header files if i use is in the same folder in which the program is but still i am getting error.
• For the error attached only <Arduino.h> header file is used in the S-function builder

Thanks a lot for your time.