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Date: Mon, 15 Oct 2001 17:23:19 +0800
From: Chia-liang Kao <clkao AT clkao DOT org>
To: Robert Collins <robert DOT collins AT itdomain DOT com DOT au>
Cc: cygwin AT cygwin DOT com, cwilson AT ece DOT gatech DOT edu
Subject: Re: Help: linking a dll which uses runtime symbol on cygwin
Message-ID: <20011015172319.A95375@clk.cirx.org>
References: <20010830084455 DOT A29690 AT clk DOT cirx DOT org> <999415945 DOT 16271 DOT 1 DOT camel AT lifelesswks>
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In-Reply-To: <999415945.16271.1.camel@lifelesswks>; from robert.collins@itdomain.com.au on Sun, Sep 02, 2001 at 05:32:23PM +1000

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Hi Rob,

I still can't get things work, after numerous trial and error.=20

Could you be so kind to modify the c example in dllhelpers-0.2.9 and
make cdll.c to call a function from usedll.c to demonstrate this?

On Sun, Sep 02, 2001 at 05:32:23PM +1000, Robert Collins wrote:
> On 30 Aug 2001 08:44:55 +0800, Chia-liang Kao wrote:
> > Anyway, to simplify and show the scenario clearly:
> >=20
> > * A (main program)
> >   + links with B (libperl)
> >=20
> > * C (the plugin glueware)
> >   + uses some symbols from both A and B
> >   + is loaded by B while A is running
> >=20
> > on FreeBSD, I just cc -share C.o -o C.so, the unresolved symbols won't
> > make any trouble.
> >=20
> > So how do I get the C.dll on cygwin?
>=20
> Create an export library for A, and ensure that it exports the symbols.
>=20
> PE - the win32 loader format - doesn't automatically export all the
> symbols, and unresolved symbols at link time are not allowed.

Cheers,
CLK

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