I use 
CFLAGS="-march=pentium4 -O3 -pipe -g"
on my p4 2.4ghz cpu system without any problem for some 4 months.
Hope this helps
Spundun
On Mon, 2003-02-10 at 09:47, Don Smith wrote:
> I have just upgraded my PC from a
> PIII to a P4.  I know I can use
> emerge -e system and emerge -e
> world  to rebuild the system with
> the new settings from make.conf.  I
> have done the kernel already.  
>  
> What I want to know is are there
> any "safe" flags that I should add
> to increase overall system
> performance?  Right now I use none
> (other than march=pentium4) and
> have optimisations at -O3 (or 03). 
> I have not had too many problems
> with compiling in the past one the
> PIII.
>  
> Suggestions? 
>  
> Thanks, Don
> 
> 
> 


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