From: James Adam <james@...>
Date: 2002-03-28T00:29:20+09:00
Subject: Ruby SWIG problems

Hi

I've been trying to use Ruby SWIG, but been having limited success.
Currently I'm using SWIG 1.3.11, and Ruby 1.7.2 ('stable' ruby versions have
given me even less success than below). Here's the scoop:

i've got 3 files:

/* File : example.h -------------------*/

class TestClass {
public:
  TestClass();
  int result;

  int add(int x, int y);
};

/* File : example.cxx ------------------*/

#include "example.h"

TestClass::TestClass() {
 result = 0;
}

int TestClass::add(int x, int y) {
 result = x + y;
 return result;
};

/* File : example.i ----------------------*/
%module example
%include example.h

/*---------------------------------------*/

....and i run the following commands, all via cygwin (Ruby & SWIG both also
compiled using cygwin):

$ swig -c++ -ruby example.i
$ gcc -c example.cxx
$ gcc -c example_wrap.cxx -I/usr/local/lib/ruby/1.6/i386-cygwin
$ gcc -shared example.o example_wrap.o -o example.so -lcygwin-ruby17

.... all with no errors. Now when i try and use my new module 'example' - i
get this:

$ irb
TypeError: wrong argument type Fixnum (expected Class)
        from (irb):1:in `require'
        from (irb):1
irb(main):002:0>

Anyone have any ideas? I've tried using different class definitions, etc etc
but with no joy.

Thanks

James