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	Wed, 29 Jan 2003 02:58:36 -0500 (EST)
Date: Wed, 29 Jan 2003 07:58:00 -0000
From: Paul Kienzle <pkienzle@jazz.ncnr.nist.gov>
To: Danny Smith <dannysmith@users.sourceforge.net>
Cc: gcc-help@gcc.gnu.org
Subject: Re: [Mingw-users] dllimport question
Message-ID: <20030129025836.A7325425@jazz.ncnr.nist.gov>
References: <20030128123641.H6924007@jazz.ncnr.nist.gov> <000a01c2c736$24095cf0$9c98a7cb@DANNY>
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In-Reply-To: <000a01c2c736$24095cf0$9c98a7cb@DANNY>; from dannysmith@clear.net.nz on Wed, Jan 29, 2003 at 01:31:24AM +0000
X-SW-Source: 2003-01/txt/msg00267.txt.bz2

On Wed, Jan 29, 2003 at 01:31:24AM +0000, Danny Smith wrote:
> 
> > I'm using g++ under windows to create some separately
> > loadable modules for GNU Octave.  As it stands, libstdc++
> > is linked statically and each module huge.  To reduce the
> > dll size, I've been trying to create a dll version of
> > libstdc++.
> >
> > Using dlltool, this isn't too hard, though I do have to
> > use the following in my source:
> >   #include <iostream>
> >   namespace std {
> > __declspec(dllimport) ostream cout;
> >   } ;
> 
> 
> Change this to
> 
> extern __declspec(dllimport) ostream cout;
> ^^^^^^
> cout is an object.
> 
> With more recent GCC , the extern is supplied implicitly when dllimport
> is used in declaration. With 3.2.0 it is not.

Thanks!  Works like a charm.  Now all I have to do is figure out what to
do with the following variables:

	vtable for __cxxabiv1::__si_class_type_info
	vtable for __cxxabiv1::__class_type_info
	std::basic_string<char, std::char_traits<char>, std::allocator<char>>::_S_empty_rep_storage
	std::basic_string<...>::_Rep::_S_terminal
	std::basic_string<...>::_Rep::_S_max_size

Any suggestions?

Paul Kienzle
pkienzle@nist.gov