From owner-freebsd-hackers@FreeBSD.ORG  Thu Oct 20 23:05:19 2011
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 2BC91106564A;
	Thu, 20 Oct 2011 23:05:19 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl [89.206.35.99])
	by mx1.freebsd.org (Postfix) with ESMTP id 905618FC0C;
	Thu, 20 Oct 2011 23:05:18 +0000 (UTC)
Received: from wojtek.tensor.gdynia.pl (localhost [127.0.0.1])
	by wojtek.tensor.gdynia.pl (8.14.5/8.14.4) with ESMTP id p9KN5FEt001625;
	Fri, 21 Oct 2011 01:05:15 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from localhost (wojtek@localhost)
	by wojtek.tensor.gdynia.pl (8.14.5/8.14.4/Submit) with ESMTP id
	p9KN5F3K001614; Fri, 21 Oct 2011 01:05:15 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Date: Fri, 21 Oct 2011 01:05:15 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Zhihao Yuan <lichray@gmail.com>
In-Reply-To: <CAGsORuAE=ijhzezLuSJ4aq0a1p_e72Pi58OALAfJAzjkjUbM+g@mail.gmail.com>
Message-ID: <alpine.BSF.2.00.1110210104430.158@wojtek.tensor.gdynia.pl>
References: <alpine.BSF.2.00.1110200937220.33102@wojtek.tensor.gdynia.pl>
	<20111020082234.GA4568@britannica.bec.de>
	<alpine.BSF.2.00.1110201244001.36805@wojtek.tensor.gdynia.pl>
	<4EA01063.8040304@FreeBSD.org>
	<CAGsORuAE=ijhzezLuSJ4aq0a1p_e72Pi58OALAfJAzjkjUbM+g@mail.gmail.com>
User-Agent: Alpine 2.00 (BSF 1167 2008-08-23)
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.2.7
	(wojtek.tensor.gdynia.pl [127.0.0.1]);
	Fri, 21 Oct 2011 01:05:15 +0200 (CEST)
Cc: Joerg Sonnenberger <joerg@britannica.bec.de>,
	Dimitry Andric <dim@freebsd.org>, freebsd-hackers@freebsd.org
Subject: Re: .eh_frame, .eh_frame_hdr - how to remove that trash
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 20 Oct 2011 23:05:19 -0000

>> --remove-section .rel.eh_frame --remove-section .rela.eh_frame
>> $your_executable
>>
>
> After I done this, the binary size *increased* a lot, while objdump shows
> that the content is less. I don't understand.
>
add -fomit-frame-pointer -fno-exceptions -fno-asynchronous-unwind-tables 
-fno-unwind-tables when compiling with gcc and this trash is not produced 
at first place.