X-Spam-Check-By: sourceware.org
Date: Thu, 20 Apr 2006 13:19:00 -0700
From: Thomas Preisler <Thomas.Preisler@Sun.COM>
Subject: how to get my app to find a dynamic library
To: cygwin@cygwin.com
Message-id: <4447ECB4.5050707@sun.com>
MIME-version: 1.0
Content-type: text/plain; format=flowed; charset=ISO-8859-1
Content-transfer-encoding: 7BIT
User-Agent: Thunderbird 1.5 (Windows/20051201)
X-IsSubscribed: yes
Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe@cygwin.com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin@cygwin.com>
List-Help: <mailto:cygwin-help@cygwin.com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner@cygwin.com
Mail-Followup-To: cygwin@cygwin.com
Delivered-To: mailing list cygwin@cygwin.com

I'm using Cygwin on Windows XP. gcc version 3.4.4.

My main app 'main.c' is in one directory and I have a dynamic library 
'cygmylib.dll' in a subdiretory 'tmp'. I can compile and link my main 
app fine but having trouble running it. It complaints about not being 
able to find the dynamic library. I have tried just about everything 
from -L, -Wl,-rpath using relative or absolute paths on the compile line 
to setting LD_LIBRARY_PATH and LD_RUN_PATH at run time, but to no avail.

Here is how I link:

gcc -o app main.c -Wl,-rpath tmp/ -Ltmp/ -lmylib

If I run from the same directory, it cannot find the dynamic library.

If I cd to tmp and run it like ../app it does run fine and finds the 
dynamic library, but this is not how I want to use it.

Is there a special link option I need to use? What is the magic?

Thanks.

--thomas

--
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/