Re: GCC3.4

From: Kris Kennaway (kris_at_obsecurity.org)
Date: 04/30/04 

Date: Fri, 30 Apr 2004 14:49:11 -0700
To: Jason Lixfeld <jason+lists.freebsd@lixfeld.ca>

On Fri, Apr 30, 2004 at 09:50:54AM -0400, Jason Lixfeld wrote:
> On Apr 30, 2004, at 3:09 AM, Kris Kennaway wrote:
>
> >On Fri, Apr 30, 2004 at 02:15:22AM -0400, Jason Lixfeld wrote:
> >>I've just installed gcc3.4 to, among other things take advantange of
> >>the -march=opteron options. I'm in quite a bit of a conundrum here
> >>because I've installed, changed the order in $PATH to look in
> >>/usr/local/bin before /usr/bin for gcc, cc etc but when I run a make
> >>buildworld it fails saying it doen't recognize the -march=opterion
> >>option. This means that the old system version of gcc is still being
> >>referenced somehow, even though I've set the paths:
> >
> >This is intentional (the system compiler is rebuilt as part of the
> >buildworld process, and thereafter used explicitly).
> >
> >You can't compile world with a compiler that is not the system
> >compiler, because it would fail with errors. If you must have a world
> >compiled with gcc 3.x, you'll have to use the FreeBSD 5.x branch,
> >which uses gcc 3.x as the system compiler.
>
> This is a 5.2.1 system but it uses 3.3.3, not 3.4. so I guess I'll
> have to wait then until 3.4 is the system compiler.

Or just use 3.3 to optimize for your CPU in the analogous way (see
make.conf and CPUTYPE).

Kris

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