Kris Kennaway kris at obsecurity.org
Fri Apr 30 14:49:15 PDT 2004

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).

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