Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Message-ID:	<42C46687.80A1B5E6@dessent.net>
Date:	Thu, 30 Jun 2005 14:39:19 -0700
From:	Brian Dessent <brian AT dessent DOT net>
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	Re: load a shared lib created using gcc/Cygwin
References:	<200506302128 DOT j5ULSnbI022603 AT cucujus DOT ucdavis DOT edu>
X-Spam-Report:	-5.9/5.0 ---- Start SpamAssassin results * -3.3 ALL_TRUSTED Did not pass through any untrusted hosts * -2.6 BAYES_00 BODY: Bayesian spam probability is 0 to 1% * [score: 0.0000] * 0.0 AWL AWL: From: address is in the auto white-list ---- End SpamAssassin results
X-IsSubscribed:	yes
Reply-To:	cygwin AT cygwin DOT com

Yu-Cheng Chou wrote:

> Can a shared library mylib.dll built using
> gcc -shared -o mylib.dll file.c
> be loaded dynamically at run time by function
> LoadLibrary("mylib.dll") in an application built using
> Visual C++ or .NET?
> I tried it in Windows XP with the latest version of
> gcc/Cygwin, the application will hang
> at LoadLibrary("mylib.dll").

If mylib.dll depends on cygwin1.dll then this will not work.  To load
the Cygwin DLL dynamically requires special attention, as described in
the FAQ: <http://cygwin.com/faq/faq.html#SEC102> and recent mailing list
threads, as this is a very recent ability.

If mylib.dll does not need functionality from Cygwin, then you should
compile it with -mno-cygwin, and it will be dynamically loadable without
extra care just like a standard windows DLL.  More information about
this is at <http://www.mingw.org/MinGWiki/>.  If you go this route you
are no longer using Cygwin so your questions should really be addressed
to the mingw list.

Brian

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -