From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([208.118.235.92]:39465)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <ncopa@alpinelinux.org>) id 1T3iGL-0002IL-S7
	for qemu-devel@nongnu.org; Tue, 21 Aug 2012 02:48:36 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <ncopa@alpinelinux.org>) id 1T3iGK-0005eB-Ka
	for qemu-devel@nongnu.org; Tue, 21 Aug 2012 02:48:29 -0400
Received: from [74.117.189.114] (port=44492 helo=mail.alpinelinux.org)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <ncopa@alpinelinux.org>) id 1T3iGK-0005dy-Fu
	for qemu-devel@nongnu.org; Tue, 21 Aug 2012 02:48:28 -0400
Date: Tue, 21 Aug 2012 08:10:05 +0200
From: Natanael Copa <ncopa@alpinelinux.org>
Message-ID: <20120821081005.3dd7f17b@ncopa-desktop.nor.wtbts.net>
In-Reply-To: <CAAu8pHshC94UsUSozFNNsAHwdWj34YO-_MftWpjfjsfV5SoPCg@mail.gmail.com>
References: <1339685486-8247-1-git-send-email-ncopa@alpinelinux.org>
	<1345123356-6673-1-git-send-email-ncopa@alpinelinux.org>
	<CAFEAcA_-GTh9zkwqvEkvG726H=6vuZdQKy88+gZJGLr6DC4KOw@mail.gmail.com>
	<CAAu8pHshC94UsUSozFNNsAHwdWj34YO-_MftWpjfjsfV5SoPCg@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Subject: Re: [Qemu-devel] [PATCH v2] configure: properly check if -lrt and
 -lm is needed
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Blue Swirl <blauwirbel@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>, qemu-devel@nongnu.org, Natanael Copa <ncopa@alpinelinux.org>

On Mon, 20 Aug 2012 19:53:22 +0000
Blue Swirl <blauwirbel@gmail.com> wrote:

> >>  - Do not remove the explicit add of -lm unless Haiku. This was due
> >>    to
> >> http://www.mail-archive.com/qemu-devel@nongnu.org/msg102965.html I
> >> am not sure if this is valid, though.
> >
> > Certainly building a linux-user target works for me even without
> > that explicit 'LIBS+=-lm' in Makefile.target. Blue, can you remember
> > what you had in mind when you wrote that email?
> 
> Build failed since math library functions (sin() etc.) were not found.

The v2 and v3 patches I sent tests for sin() in addition to isnan (which
normally is a macro). It might explain why it works now.

Adding a second -lm does not hurt, but omitting it when needed breaks
build on uclibc for sure, so it would be nice if the v3 patch could be
applied.

Thanks!

-nc