From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <mhall@mhcomputing.net>
Received: from mail.mhcomputing.net (master.mhcomputing.net [74.208.46.186])
 by dpdk.org (Postfix) with ESMTP id E26E65912
 for <dev@dpdk.org>; Sat,  2 Aug 2014 18:44:34 +0200 (CEST)
Received: by mail.mhcomputing.net (Postfix, from userid 1000)
 id 90CC780C764; Sat,  2 Aug 2014 09:46:00 -0700 (PDT)
Date: Sat, 2 Aug 2014 09:46:00 -0700
From: Matthew Hall <mhall@mhcomputing.net>
To: Masaru Oki <m-oki@stratosphere.co.jp>
Message-ID: <20140802164600.GA9312@mhcomputing.net>
References: <20140801175138.GA31733@mhcomputing.net>
 <20140802152904.GA9064@mhcomputing.net>
 <20140802154310.GA9104@mhcomputing.net>
 <CAFLKUzKOPxC4jQBG6C07QXJ=MrcydxG9FdHD6h7omj6BY=99LQ@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CAFLKUzKOPxC4jQBG6C07QXJ=MrcydxG9FdHD6h7omj6BY=99LQ@mail.gmail.com>
User-Agent: Mutt/1.5.23 (2014-03-12)
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] Debugging EAL PCI / Driver Init
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Sat, 02 Aug 2014 16:44:35 -0000

On Sun, Aug 03, 2014 at 01:37:06AM +0900, Masaru Oki wrote:
> cc links library funtion from archive only if call from other object.
> but new dpdk pmd library has constractor section and not call directly.
> ld always links library funtion with constractor section.
> use -Xlinker, or use ld instead of cc.

Hello Oki-san,

The trick to fix it was this, I finally found it in the example Makefiles with 
V=1 flag.

-Wl,--whole-archive -Wl,--start-group -lintel_dpdk -Wl,--end-group -Wl,--no-whole-archive

Thank you for the advice you provided, I couldn't have fixed it without your 
suggestions... it got me to look more closely at the linking. Importantly, 
"-Wl,--whole-archive" includes the entire archive whether or not it's called 
from other objects, so we don't lose the constructors, just like you said.

Matthew.