Date: Sun, 3 Jul 2005 10:27:04 -0700 From: "Darren Pilgrim" <dmp@bitfreak.org> To: "'Kris Kennaway'" <kris@obsecurity.org> Cc: ports@FreeBSD.org, current@FreeBSD.org Subject: RE: HEADS UP: Ports are not ready for CFLAGS=-O2 in 6.0 Message-ID: <001401c57ff4$6f429730$0b2a15ac@SMILEY> In-Reply-To: <20050703055842.GA1933@xor.obsecurity.org>
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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 > > >-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 > > >CFLAGS=-O -pipe in your /etc/make.conf for now, until we can > > >resolve this problem more satisfactorily. <...> > > P.S. The problem is only if you build without > -fno-strict-alias, which is the default now. Is that to say, then, that ports will build and run safely if you use CFLAGS=-O2 -pipe -fno-strict-alias?
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