X-Spam-Check-By: sourceware.org
Message-ID: <89c3ea2b0612221948w4528d90bk5a934f3a5bd727b0@mail.gmail.com>
Date: Fri, 22 Dec 2006 22:48:41 -0500
From: "andy wang" <ypwangreg AT gmail DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Is it possible to directly call a function in a dlopen library
In-Reply-To: <458CA19A.DD0291F3@dessent.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <89c3ea2b0612212204g4cf5ee2bg4b90780aaab85c0f AT mail DOT gmail DOT com> 	 <458C0887 DOT 6080201 AT cygwin DOT com> 	 <89c3ea2b0612221906l7e99c12m2776e0c2b13f5568 AT mail DOT gmail DOT com> 	 <458CA19A DOT DD0291F3 AT dessent DOT net>
X-IsSubscribed: yes
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Precedence: bulk
List-Id: <cygwin.cygwin.com>
List-Unsubscribe: <mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
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

Hi, Brain:

Your answer is always the guide. Thanks a lot!

So maybe it is possible on Linux? I asked this question because I find
this kind of logic in asterisk! the main program will load the .so
using dlopen. i.e. module1.so and module2.so, and I notice that
module2.so will call directly (without dlsym, just func1( ... ) which
is defined in module1.so). I am very confused :-(. Is it because it
used RTLD_GLOBAL?

* RTLD_GLOBAL - the external symbols defined in the library will be made
 *		 available to subsequently loaded libraries.

Regards,
Andy

--
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/