HEADER:
typedef struct myStruct_struct
{
    double prefix[8];
    int length;
    double array[1];
}
myStruct;

INTERFACE:
%module example

%inline %{
extern int    gcd(int x, int y);
extern double Foo;

extern myStruct doSomething(myStruct vp, double ai);

#include "structHeader.h"

%}

#include "structHeader.h"