From owner-freebsd-toolchain@FreeBSD.ORG  Mon Nov 22 14:05:27 2010
Return-Path: <owner-freebsd-toolchain@FreeBSD.ORG>
Delivered-To: freebsd-toolchain@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 0DDC8106564A;
	Mon, 22 Nov 2010 14:05:27 +0000 (UTC)
	(envelope-from erik@cederstrand.dk)
Received: from csmtp2.one.com (csmtp2.one.com [91.198.169.22])
	by mx1.freebsd.org (Postfix) with ESMTP id 889FE8FC12;
	Mon, 22 Nov 2010 14:05:26 +0000 (UTC)
Received: from [192.168.0.22]
	(0x573fa596.cpe.ge-1-1-0-1109.ronqu1.customer.tele.dk
	[87.63.165.150])
	by csmtp2.one.com (Postfix) with ESMTPA id A9C474BC07C27;
	Mon, 22 Nov 2010 14:05:24 +0000 (UTC)
Mime-Version: 1.0 (Apple Message framework v1081)
Content-Type: multipart/signed; boundary=Apple-Mail-2732-742395410;
	protocol="application/pkcs7-signature"; micalg=sha1
From: Erik Cederstrand <erik@cederstrand.dk>
In-Reply-To: <4CE93959.7070600@FreeBSD.org>
Date: Mon, 22 Nov 2010 15:05:24 +0100
Message-Id: <1F5D7910-3AC6-4ACA-A7C5-EC28B9EABF52@cederstrand.dk>
References: <E135940E-F79C-4DFA-811D-18CCBF3C609E@cederstrand.dk>
	<4CE06C4F.7000002@FreeBSD.org>
	<FD61324A-1A22-4731-A563-B0BE8AB93069@cederstrand.dk>
	<4CE93959.7070600@FreeBSD.org>
To: Dimitry Andric <dim@FreeBSD.org>
X-Mailer: Apple Mail (2.1081)
X-Content-Filtered-By: Mailman/MimeDel 2.1.5
Cc: freebsd-toolchain@freebsd.org
Subject: Re: Clang and -frandom-seed
X-BeenThere: freebsd-toolchain@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Maintenance of FreeBSD's integrated toolchain
	<freebsd-toolchain.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-toolchain>, 
	<mailto:freebsd-toolchain-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-toolchain>
List-Post: <mailto:freebsd-toolchain@freebsd.org>
List-Help: <mailto:freebsd-toolchain-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-toolchain>, 
	<mailto:freebsd-toolchain-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 22 Nov 2010 14:05:27 -0000


--Apple-Mail-2732-742395410
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain;
	charset=us-ascii

Den 21/11/2010 kl. 16.23 skrev Dimitry Andric:

> On 2010-11-15 11:10, Erik Cederstrand wrote:
>=20
>> Where in the build scripts would I need to add this flag? Something =
like:
>>=20
>> CXXFLAGS +=3D -frandom-seed=3D${.TARGET}
>=20
> Rather use:
>=20
> CXXFLAGS+=3D-frandom-seed=3D${.IMPSRC:S/^${.CURDIR}\///}
>=20
> which is rather contorted, but I see no other way to generate a =
relative
> path. :)
>=20
> Also, this generates an empty '-frandom-seed=3D' option for every =
command
> that uses CXXFLAGS but isn't a compilation at all, such as most =
linking
> commands.  It is probably not harmful, though.

I added

.ifdef WITH_DETERMINISTIC
CXXFLAGS+=3D-frandom-seed=3D\"${.IMPSRC:S/^${.CURDIR}\///}\"
.endif

to lib/clang/clang.build.mk

and "WITH_DETERMINISTIC=3Dtrue" to src.conf, but apparently the flag =
isn't being propagated to clang.build.mk. However it is being picked up =
if I pass it on the command-line:

make WITH_DETERMINISTIC=3Dtrue buildworld

Why isn't the flag available in clang.build.mk?

Erik=

--Apple-Mail-2732-742395410--