From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lb0-f182.google.com (mail-lb0-f182.google.com [209.85.217.182]) by dpdk.org (Postfix) with ESMTP id 205217F30 for ; Tue, 11 Nov 2014 17:14:36 +0100 (CET) Received: by mail-lb0-f182.google.com with SMTP id f15so8715788lbj.13 for ; Tue, 11 Nov 2014 08:24:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=YgGZEUvhXDQt09a4eC2sFsVhOnDNHiYMEYJD6v7dSvk=; b=r29dr5CaxL5238fMXWigkbfGFFzJms6mGsbVnkILbwNvj0boCop1EZ9KhCuDaMr5BI luprGjTK+3MUNvUKbEhdwhoaZEe7v9m6jN47xdiuxKR05lWNvMlKD7pGit6+Pj4sCFqo zSkWDXq/JMO5Lc/iKxwJ1+L7s/Dru29ANlfA4IMZvIlH6S22Vatp0d3rJo71pTBd1aL8 sm30a++XcNLQek1ksXODWxbMiRZJWHId5XLiKf/oa2biVQNR5La12ftwY5AMJDijPJbp IH2KT8DeyK1h6gcjvloFSomRE/upavgTZtpE20V1wWD1n80ZPjp9jCOHt7nFxMKD81ju i61Q== MIME-Version: 1.0 X-Received: by 10.152.224.163 with SMTP id rd3mr1242604lac.24.1415723067045; Tue, 11 Nov 2014 08:24:27 -0800 (PST) Received: by 10.25.216.158 with HTTP; Tue, 11 Nov 2014 08:24:26 -0800 (PST) In-Reply-To: <20141111155408.GC31973@hmsreliant.think-freely.org> References: <91383E96CE459D47BCE92EFBF5CE73B004E9D503@IRSMSX108.ger.corp.intel.com> <20141111141857.GA4807@sivswdev02.ir.intel.com> <20141111155408.GC31973@hmsreliant.think-freely.org> Date: Tue, 11 Nov 2014 17:24:26 +0100 Message-ID: From: Newman Poborsky To: Neil Horman Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Cc: "dev@dpdk.org" Subject: Re: [dpdk-dev] building shared library X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 11 Nov 2014 16:14:37 -0000 It works!!! Thanks everybody! I wasn't using '-Wl,--no-as-needed' while compiling, so no PMD driver was linked and hence no constructor called. After putting this options, it finally works. Again, thank you very much, I could never figure out all these steps on my own! BR, Newman On Tue, Nov 11, 2014 at 4:54 PM, Neil Horman wrote: > On Tue, Nov 11, 2014 at 03:26:04PM +0000, De Lara Guarch, Pablo wrote: > > > > > > > -----Original Message----- > > > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Newman Poborsky > > > Sent: Tuesday, November 11, 2014 3:17 PM > > > To: Gonzalez Monroy, Sergio > > > Cc: dev@dpdk.org > > > Subject: Re: [dpdk-dev] building shared library > > > > > > Hi, > > > > > > after building DPDK libs as shared libraries and linking it, I'm back > to my > > > first problem: rte_eal_driver_register() never gest called and my app > > > crashes since there are no drivers registered. As previously > mentioned, in > > > regular DPDK user app this functions is called for every driver before > > > main(). How? > > > > If I am not wrong here, you have to use the -d option to specify the > driver you want to use. > > > > Btw, the option you were looking for can be found in > config/common_linuxapp or config/common_bsdapp. > > > > Alternatively, when you link your application you can speify > -llibrte_pmd_ and your applicaion should call all the constructors > when > the dynamic loader hits your binaries DT_NEEDED table. Thats how you can > avoid > the command line specification. > > Neil > > > Pablo > > > > > > BR, > > > Newman > > > > > > On Tue, Nov 11, 2014 at 3:44 PM, Newman Poborsky > > > > > > wrote: > > > > > > > Hi Sergio, > > > > > > > > no, that sounds good, thank you. Since I'm not that familiar with > DPDK > > > > build system, where should this option be set? In 'lib' folder's > Makefile? > > > > > > > > Thank you once again! > > > > > > > > BR, > > > > Newman > > > > > > > > On Tue, Nov 11, 2014 at 3:18 PM, Sergio Gonzalez Monroy < > > > > sergio.gonzalez.monroy@intel.com> wrote: > > > > > > > >> On Tue, Nov 11, 2014 at 01:10:29PM +0100, Newman Poborsky wrote: > > > >> > Hi, > > > >> > > > > >> > I want to build one .so file with my app (it contains API that I > want to > > > >> > call through JNI) and all DPDK libs that I use in my app. > > > >> > > > > >> > As I've already mentioned, when I build and start my dpdk app as a > > > >> > standalone application, I can see that before main() is called, > there > > > >> is a > > > >> > call to 'rte_eal_driver_register()' function for every driver. > When I > > > >> build > > > >> > .so file, this does not happen and no driver is registered so > everyting > > > >> > after rte_eal_init() fails. > > > >> > > > > >> Hi Newman, > > > >> > > > >> AFAIK the current build system does not support that. > > > >> > > > >> You can build DPDK as shared libs by setting the following config > option: > > > >> CONFIG_RTE_BUILD_SHARED_LIB=y > > > >> > > > >> Then build your app as an .so that links against DPDK libs, so you > have > > > >> explicit dependencies (such dependencies should show with ldd). > > > >> > > > >> Is there any reason why you want everything to be a single .so ? > > > >> > > > >> I don't know much about how Java loads DSOs but I reckon that it > must > > > >> resolve > > > >> explicit dependencies such as libc. > > > >> > > > >> Thanks, > > > >> Sergio > > > >> > > > >> > > > >> > > > > >> > BR, > > > >> > Newman > > > >> > > > > >> > > > > > > > > >