From owner-freebsd-threads@FreeBSD.ORG  Mon Feb  4 15:08:58 2008
Return-Path: <owner-freebsd-threads@FreeBSD.ORG>
Delivered-To: freebsd-threads@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 7165616A421
	for <freebsd-threads@freebsd.org>; Mon,  4 Feb 2008 15:08:58 +0000 (UTC)
	(envelope-from des@des.no)
Received: from tim.des.no (tim.des.no [194.63.250.121])
	by mx1.freebsd.org (Postfix) with ESMTP id 2E2C913C46B
	for <freebsd-threads@freebsd.org>; Mon,  4 Feb 2008 15:08:58 +0000 (UTC)
	(envelope-from des@des.no)
Received: from tim.des.no (localhost [127.0.0.1])
	by spam.des.no (Postfix) with ESMTP id 189542087;
	Mon,  4 Feb 2008 15:49:42 +0100 (CET)
X-Spam-Tests: AWL
X-Spam-Learn: disabled
X-Spam-Score: -0.2/3.0
X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on tim.des.no
Received: from ds4.des.no (des.no [80.203.243.180])
	by smtp.des.no (Postfix) with ESMTP id 9666F2083;
	Mon,  4 Feb 2008 15:49:41 +0100 (CET)
Received: by ds4.des.no (Postfix, from userid 1001)
	id 815CF8449D; Mon,  4 Feb 2008 15:49:41 +0100 (CET)
From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: "Karl H. Beckers" <karl.h.beckers@gmx.net>
References: <5913.192.9.112.196.1202124683.squirrel@www.our-isp.org>
Date: Mon, 04 Feb 2008 15:49:41 +0100
In-Reply-To: <5913.192.9.112.196.1202124683.squirrel@www.our-isp.org> (Karl
	H. Beckers's message of "Mon\, 4 Feb 2008 12\:31\:23 +0100 \(CET\)")
Message-ID: <86ve54epyy.fsf@ds4.des.no>
User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.1 (berkeley-unix)
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Cc: freebsd-threads@freebsd.org
Subject: Re: threading in FreeBSD (acx_pthreads)
X-BeenThere: freebsd-threads@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Threading on FreeBSD <freebsd-threads.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-threads>, 
	<mailto:freebsd-threads-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-threads>
List-Post: <mailto:freebsd-threads@freebsd.org>
List-Help: <mailto:freebsd-threads-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-threads>,
	<mailto:freebsd-threads-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 04 Feb 2008 15:08:58 -0000

"Karl H. Beckers" <karl.h.beckers@gmx.net> writes:
> I'm trying to move my configure.in from manual threading libs detection
> to acx_pthreads [...]

I have no idea what acx_pthread is, but judging from your description,
it doesn't seem to do a very good job.  There's nothing wrong with
manual detection - see how Varnish does it:

http://varnish.projects.linpro.no/browser/trunk/varnish-cache/configure.ac

Note that the correct idiom according to POSIX is -lpthread, so that
should in theory work on all POSIX platforms.  The reason why Varnish
checks for -lthr explicitly is that there are FreeBSD versions where
-lpthread defaults to -lkse instead of -lthr, and -lkse has proven to
break rather badly under load.

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no