RE: HEADS UP: Ports are not ready for CFLAGS=-O2 in 6.0

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?