MATLAB: ‘Undefined reference to’ error in S-function builder

Question

I have this in the S-function Libraries pane

Library/Object/Source file
convert_ok 
Include files and external function declarations
#include <math.h>
#include <stdio.h>
#include <string.h>

I call the function in the Output pane

 y[0]=Convert(u[0])

*Note: Convert() is a function inside the convert_ok.c source file. During compilation and building the S-function, it gives me the following error ' undefined reference to _Convert' at the y[0]=Convert(u[0]) line in the wrapper file. What is the problem? How can i make this work?

Answer 1

In the Library/Object/Source file pane, you need to specify the full filename (including the .c extension):

    convert_ok.c

You may also need to specify the full path to the .c file if it is not present in the current directory.