From clamav-devel-bounces@lists.clamav.net Wed Mar 25 20:09:29 2009 Return-Path: X-Original-To: list@tad.clamav.net Delivered-To: list@tad.clamav.net X-Virus-Scanned: Debian amavisd-new at tad.clamav.net Received: from tad.clamav.net ([127.0.0.1]) by localhost (tad.clamav.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NzJ5-GbF+YjY; Wed, 25 Mar 2009 20:09:28 +0100 (CET) Received: from tad.clamav.net (localhost.localdomain [127.0.0.1]) by tad.clamav.net (Postfix) with ESMTP id 9804116C2C8; Wed, 25 Mar 2009 20:09:26 +0100 (CET) X-Original-To: clamav-devel@tad.clamav.net Delivered-To: clamav-devel@tad.clamav.net X-Virus-Scanned: Debian amavisd-new at tad.clamav.net Received: from tad.clamav.net ([127.0.0.1]) by localhost (tad.clamav.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id rQdv7r5DRcCQ for ; Wed, 25 Mar 2009 20:09:22 +0100 (CET) Received: from kelly.lavabit.com (kelly.lavabit.com [72.249.41.32]) by tad.clamav.net (Postfix) with ESMTP id A41B916C29C for ; Wed, 25 Mar 2009 20:09:22 +0100 (CET) Received: from b.earth.lavabit.com (b.earth.lavabit.com [192.168.111.11]) by kelly.lavabit.com (Postfix) with ESMTP id DFF8F7C19A for ; Wed, 25 Mar 2009 14:09:21 -0500 (CDT) Received: from 10.8.0.6 (10.8.0.6) by lavabit.com with ESMTP id VB5L7JCEF9MU for ; Wed, 25 Mar 2009 14:09:21 -0500 Message-ID: <49CA8161.5030309@lavabit.com> Date: Wed, 25 Mar 2009 14:09:21 -0500 From: Ladar Levison User-Agent: Thunderbird 1.5.0.12 (X11/20090114) MIME-Version: 1.0 To: ClamAV Development References: In-Reply-To: Subject: Re: [Clamav-devel] [Clamav] Cannot dlopen: file not found - unrar support unavailable X-BeenThere: clamav-devel@lists.clamav.net X-Mailman-Version: 2.1.9 Precedence: list Reply-To: ClamAV Development List-Id: ClamAV Development List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: clamav-devel-bounces@lists.clamav.net Errors-To: clamav-devel-bounces@lists.clamav.net nicolas dumont wrote: > Hello, > > I am using clamav-0.95 with my own daemon that use libclamav > > During the initialization I have the message : > LibClamAV Warning: Cannot dlopen: file not found - unrar support unavailable > > I would like to link my daemon with the libclamunrar_iface.a and libclamunrar.a > in order to have all libraries inside my binary. > > Is there a way in my Makefile or elsewhere to have the libclamunrar > directly called > inside my binary without modifying the call to > lt_dlopenext("libclamunrar_iface") ? > > Best regards, > Nicolas Dumont. > Hi Nicholas, I am also compiling ClamAV into a library and opening it with a dlopen() call. The technique I use is: /configure make I then merge together the different ClamAV libs using this command: ld -shared -o clamav.lib clamav-0.94.2/libclamav/.libs/libclamav.a clamav-0.94.2/libclamunrar_iface/.libs/libclamunrar_iface.a clamav-0.94.2/libclamunrar/.libs/libclamunrar.a -lbz2 -lgmp -lpthread -lz Which creates a file called clamav.lib that can be passed to dlopen(). There are a couple of notes. Which libraries you dynamically link against when using ld will vary depending on your platform and how ClamAV configures itself. For example, on my system I don't actually link against pthread specifically because I know the program I'm using is already linked against the pthread library. On Cent OS 4/Red Hat Enterprise 4 specifically, I need to pass the --disable-zlib-vcheck parameter to configure and I need to manually edit the libclamav makefiles to pass -O1 instead of -O2 to gcc or all of the free() calls will be optimized away inside the cl_free() function. See this bug for details: https://bugzilla.redhat.com/show_bug.cgi?id=490253 If anyone knows of a better way to do this, or finds any problems with using ClamAV this way, please let me know... Ladar _______________________________________________ http://lurker.clamav.net/list/clamav-devel.html Please submit your patches to our Bugzilla: http://bugs.clamav.net