From owner-freebsd-arm@freebsd.org  Sat Oct  7 21:48:53 2017
Return-Path: <owner-freebsd-arm@freebsd.org>
Delivered-To: freebsd-arm@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 5FA39E4304A
 for <freebsd-arm@mailman.ysv.freebsd.org>;
 Sat,  7 Oct 2017 21:48:53 +0000 (UTC)
 (envelope-from linimon@lonesome.com)
Received: from mail.soaustin.net (mail.soaustin.net [192.108.105.60])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client CN "mail.soaustin.net",
 Issuer "Let's Encrypt Authority X3" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id 676DCE1A;
 Sat,  7 Oct 2017 21:48:52 +0000 (UTC)
 (envelope-from linimon@lonesome.com)
Received: from lonesome.com (bones.soaustin.net [192.108.105.22])
 by mail.soaustin.net (Postfix) with ESMTPSA id E771E738;
 Sat,  7 Oct 2017 16:48:50 -0500 (CDT)
Date: Sat, 7 Oct 2017 16:48:49 -0500
From: Mark Linimon <linimon@lonesome.com>
To: Ian Lepore <ian@freebsd.org>
Cc: Guy Yur <guyyur@gmail.com>, Warner Losh <imp@bsdimp.com>,
 freebsd-arm <freebsd-arm@freebsd.org>, linimon@FreeBSD.org
Subject: Re: armv7, building p7zip and -fPIC
Message-ID: <20171007214849.GB22150@lonesome.com>
References: <CAC67Hz8kctZyTEW+0qQRVYLzPEK7cG9JXhw90fwHx84fnuwO0w@mail.gmail.com>
 <CANCZdfo-1ngKQSkkW5zjZwMWj0QnVnrf2WaJ68=bh_oNPKZ3hw@mail.gmail.com>
 <CAC67Hz8RxH+Nd0dPbn4qstpFJEkoFWkKpTQ81sX6K3NUuYPDtA@mail.gmail.com>
 <1507403387.86205.286.camel@freebsd.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1507403387.86205.286.camel@freebsd.org>
User-Agent: Mutt/1.5.23 (2014-03-12)
X-BeenThere: freebsd-arm@freebsd.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: "Porting FreeBSD to ARM processors." <freebsd-arm.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-arm>,
 <mailto:freebsd-arm-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arm/>
List-Post: <mailto:freebsd-arm@freebsd.org>
List-Help: <mailto:freebsd-arm-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-arm>,
 <mailto:freebsd-arm-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 07 Oct 2017 21:48:53 -0000

On Sat, Oct 07, 2017 at 01:09:47PM -0600, Ian Lepore wrote:
> This is really not just an armv7-only thing, the -fPIC flag should
> always be used.

OK, I'm going to admit some ignorance and prepare to take my beating.

The last time I tried to pepper some -fPIC flags around without knowing
what I was doing, I was told (in no uncertain terms) that I didn't know
what I was doing.  While this was true I wasn't happy with the way I was
told :-)

So can you please provide a "-fPIC for dummies" summary?  I'll add it to
the wiki.

(In my old embedded systems days, we didn't need all this fancy stuff;
you just stuffed your statically-linked result in the 64KB EPROM and you
were done.)

mcl