From: Larrytheliquid <larrytheliquid@...>
Date: 2007-03-28T01:50:16+09:00
Subject: Re: SWIG toy example problem

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Hi Jano,

Good call on checking for rb_define_const... it wasn't there. I eventually
found out that the version I was using was 1.3.29, which did not seem to
work. After using 1.3.31 everything worked well.

Thanks.

On 3/26/07, Jano Svitok <jan.svitok@gmail.com> wrote:
>
> On 3/24/07, Larrytheliquid <larrytheliquid@gmail.com> wrote:
> >  I'm having a bit of trouble trying to use SWIG to wrap a simple C++
> header
> > file, as follows:
> >
> > 'MyTest.h'
> > ----------
> > #define SUCCESS 1
> > ----------
> >
> > 'myTest.i'
> > ----------
> > %include MyTest.h
> >
> > %module myTest
> > %{
> > #include "MyTest.h"
> > %}
> > ---------
> >
> > swig -c++ -ruby myTest.i
> >
> > g++ -c myTest_wrap.cxx -I/usr/lib/ruby/1.8/i386-cygwin
> >
> > g++ -shared myTest_wrap.o -lruby -o myTest.so
> >
> > $ irb
> > irb(main):001:0> require 'myTest'
> > => true
> > irb(main):002:0> MyTest::SUCCESS
> > NameError: uninitialized constant MyTest::SUCCESS
> >         from (irb):3
> >         from :0
> > irb(main):004:0> MyTest.constants
> > => []
> > irb(main):005:0>
> >
>
> Hi,
>
> somehow works for me. To check, have a look at the end of the
> generated file - there should be a line saying
> rb_define_const(mMyTest,"SUCCESS", INT2NUM(1));
>
> SWIG processor by default ignores #include (to enable them use
> --includeall) but this is not your case, as you used %include instead.
>
> I'm using SWIG 1.3.27, as the newer ones converted ruby support to
> unified templates, and I couldn't get our hacks to work with them yet.
>
> Jano
>
>


-- 
Respectfully,
Larry Diehl
www.larrytheliquid.com

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