Date: Sun, 3 Jul 2005 21:39:48 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Darren Pilgrim <dmp@bitfreak.org> Cc: ports@FreeBSD.org, current@FreeBSD.org, 'Kris Kennaway' <kris@obsecurity.org> Subject: Re: HEADS UP: Ports are not ready for CFLAGS=-O2 in 6.0 Message-ID: <20050704013948.GA47038@xor.obsecurity.org> In-Reply-To: <001401c57ff4$6f429730$0b2a15ac@SMILEY> References: <20050703055842.GA1933@xor.obsecurity.org> <001401c57ff4$6f429730$0b2a15ac@SMILEY>
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--C7zPtVaVf+AK4Oqc Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Jul 03, 2005 at 10:27:04AM -0700, Darren Pilgrim wrote: > From: Kris Kennaway > > On Sat, Jul 02, 2005 at 09:47:44PM -0700, Adam Weinberger wrote: > > > Kris Kennaway wrote: > > > >About a week ago des changed the default value of CFLAGS to "-O2=20 > > > >-pipe" on FreeBSD 6.0-CURRENT. While this is believed to be safe > > > >for compiling world + kernel on -CURRENT thesedays (because the > > > >aliasing bugs that are exposed with -O2 have been fixed), it's > > > >definitely *not* safe for compiling many ports (there are at > > > >least 350 ports that emit warnings about aliasing, and would > > > >probably have runtime errors when compiled with -O2; moreover, a > > > >number of ports fail to even build with -O2). > > > > > > > >Therefore, if you compile ports on FreeBSD 6.0, you should set=20 > > > >CFLAGS=3D-O -pipe in your /etc/make.conf for now, until we can=20 > > > >resolve this problem more satisfactorily. > <...> > >=20 > > P.S. The problem is only if you build without=20 > > -fno-strict-alias, which is the default now. >=20 > Is that to say, then, that ports will build and run safely if you use > CFLAGS=3D-O2 -pipe -fno-strict-alias? As per the quoted thread from last year, and the default CFLAGS settings, yes :-) Kris --C7zPtVaVf+AK4Oqc Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFCyJNkWry0BWjoQKURAnDzAJ98sZzrfF+8iGrxEwJDnF4m8YPPgwCg7/6r T7GUwoLC9NnIwST/o3WPM7o= =O5Df -----END PGP SIGNATURE----- --C7zPtVaVf+AK4Oqc--
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