kernel configuration

[t-u-t]

On Wed, Jan 14, 2009 at 9:18 PM, Chuck Swiger <cswiger at mac.com> wrote:

> On Jan 14, 2009, at 10:15 AM, Ewald Jenisch wrote:
>
>> On Wed, Jan 14, 2009 at 04:37:53PM +0100, icemaca wrote:
>>
>>>
>>> this i386 version has
>>>
>>> cpu             I486_CPU
>>> cpu             I586_CPU
>>> cpu             I686_CPU
>>>
>>>
>> Basically you can comment all but I686_CPU since the others are for
>> earlier x86 architectures.
>>
>
> While it is true that you can comment out all but i686 and get a working
> kernel, you will experience reduced performance.  There are a number of
> low-level assembly routines (cf sys/i386/i386/support.s such as i586_bcopy)
> that are conditionalized off of I586_CPU only, even though they provide an
> advantage on i686 platforms also.
>
> --
> -Chuck
>

so in any case it doesn't hurt to leave all 3. right?

I have one last question though, is

makeoptions DEBUG=g necessary if i am not debugging or is it always
necessary to build the kernel properly? can i safely comment it out?