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Message-ID: <39732229.5E4E1D33@ece.gatech.edu>
Date: Mon, 17 Jul 2000 11:11:37 -0400
From: Charles Wilson <cwilson AT ece DOT gatech DOT edu>
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To: Fabio Tamburini <tamburin AT cilta DOT unibo DOT it>
CC: cygwin AT sources DOT redhat DOT com
Subject: Re: How to build a DLL
References: <3972D35F DOT 16FC8C7B AT cilta DOT unibo DOT it>
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Fabio Tamburini wrote:
> 
> Hi
> I am a novice of cygwin and I am wondering if it is possible to compile
> a lib???.a archive into
> a DLL library using the cygwin environment.
> How can I do that? Is there a tutorial on it?
> 
> Thanks...
> 
> Please answer directly using my email.
> 

Please search the mail archives; this question has been asked many times
in the past. Also, see Mumit Khan's web page (there's a link to it on
the Cygwin web page/'related links').

Short version:

mkdir foo
cd foo
cp lib????.a .
ar x lib????.a
gcc -shared -Wl,--enable-auto-image-base *.o -o lib????.dll
-Wl,--out-implib=lib????.dll.a 

This creates a dll and an import lib. BTW, gcc *actually* delegates this
job to the linker ld.exe, and the in official version
(binutils-20000625) these features are broken. You can get a patched
version of ld.exe at
http://cygutils.netpedia.net/V1.1/linker/ld.exe.tar.gz

--Chuck

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