X-Recipient: archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status: No, hits=-6.8 required=5.0	tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,SPF_HELO_PASS,T_RP_MATCHES_RCVD
X-Spam-Check-By: sourceware.org
Message-ID: <4CB39D3F.6070602@redhat.com>
Date: Mon, 11 Oct 2010 17:26:55 -0600
From: Eric Blake <eblake AT redhat DOT com>
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100921 Fedora/3.1.4-1.fc13 Mnenhy/0.8.3 Thunderbird/3.1.4
MIME-Version: 1.0
To: cygwin AT cygwin DOT com
Subject: Re: x86_64-w64-mingw32-g++ can't find -ldl
References: <29938897 DOT post AT talk DOT nabble DOT com>
In-Reply-To: <29938897.post@talk.nabble.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-IsSubscribed: yes
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.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

On 10/11/2010 05:23 PM, kenny AT ca wrote:
>
> I'm using x86_64-w64-mingw32 in cygwin as 64-bit compiler to build 64-bit
> applications. Functions like dlopen(), dlerror(), etc., are used in codes.

There's your problem.  x86_64-w64-mingw32 is a cross-compiler.  It 
compiles mingw executables, not cygwin executables. And mingw lacks 
dlopen.  You'll never get this to work.

If you want to compile 64-bit cygwin apps, then help us develop a 64-bit 
cygwin dll first.  But for now, ALL cygwin apps are 32-bit, because 
cygwin has not yet been ported to 64-bit execution.

-- 
Eric Blake   eblake AT redhat DOT com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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