Re: PPC cflags

According to PowerLogix:

Remember, the only difference between a G3 and a G4 is Altivec. Altivec 
is a specialized vector processor and only a small number of specific 
software tasks in some applications actually utilize it. The majority 
of mainstream applications do not take advantage of Altivec. Even the 
Darwin kernel, at the heart of Mac OS X, is not optimized to use 
Altivec.

J_

Jeffrey M. Miller CISSP CISM RHCE CCNA LPIC-2
Sr. Security Consultant
Acumen InfoSec LLC
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On Feb 20, 2005, at 11:48 AM, Erik Zeek wrote:

> On Sun February 20 2005 11:41 am, Nick Smith wrote:
>> <quote who="Erik Zeek">
>>
>>> On Sat February 19 2005 10:18 pm, Carl Hudkins wrote:
>>>> On Sat February 19 2005 21:49, Nick Smith wrote:
>>>>
>>>>  Here on a 450 MHz G3, I've been using these flags for many
>>>> months with no
>>>> problems:
>>>>
>>>> CFLAGS="-O3 -mcpu=G3 -maltivec -mabi=altivec
>>>> -fno-strict-aliasing -pipe"
>>>
>>> Does the G3 have altivec extensions?  I thought that they didn't
>>> show up till
>>> the G4.
>>
>> man dont tell me that! i was going with what the guy said and
>> have almost completed the entire bootstrap with those cflags! i
>> hope your wrong.....(no offense of course)
>>
>>> Erik
>>
>
> If I recall correctly, it won't kill any thing.  It might slow 
> somethings
> down.  I just don't know for sure.  The -mabi might cause problems with
> compatibly with precompiled modules.
>
> The best thing would be to look it up.  I'm no expert on the PPC, but I
> believe that I am correct in this.
>
> Erik