All,

I'm a OBSD newbie. Right now I'm compiling a new 4.1 kernel on a new
install for a firewall. I copied GENERIC to "test" in /sys/arch/i386/
conf/, stripped out everything I didn't want and deleted all the CPU
references at the top except for "I586_CPU". Yet, now that I'm
watching compiler output go by I keep seeing references to "-
march=i486". Shouldn't that be "-march=i586"?

This is only a P75 so I'd like to get rid of any limiting code in the
kernel, even though I think there is not much to be gained in the jump
from 486 to 586. Not like getting rid of 386 anyway. What didI miss?

thx,

r

thefronny@gmail.com wrote:
> All,
>
> I'm a OBSD newbie. Right now I'm compiling a new 4.1 kernel on a new
> install for a firewall. I copied GENERIC to "test" in /sys/arch/i386/
> conf/, stripped out everything I didn't want and deleted all the CPU
> references at the top except for "I586_CPU". Yet, now that I'm
> watching compiler output go by I keep seeing references to "-
> march=i486". Shouldn't that be "-march=i586"?
>
> This is only a P75 so I'd like to get rid of any limiting code in the
> kernel, even though I think there is not much to be gained in the jump
> from 486 to 586. Not like getting rid of 386 anyway. What didI miss?

Kernel tweaking is not supported, and doesn't really help anyway.
Remember: GNU is Not Unix (and neither is Linux).

Joachim

On Jul 29, 9:43 am, "Joachim Schipper" <jdNoOtSPAMschip...@math.uu.nl>
wrote:
> thefro...@gmail.com wrote:
> > All,
>
> > I'm a OBSD newbie. Right now I'm compiling a new 4.1 kernel on a new
> > install for a firewall. I copied GENERIC to "test" in /sys/arch/i386/
> > conf/, stripped out everything I didn't want and deleted all the CPU
> > references at the top except for "I586_CPU". Yet, now that I'm
> > watching compiler output go by I keep seeing references to "-
> > march=i486". Shouldn't that be "-march=i586"?
>
> > This is only a P75 so I'd like to get rid of any limiting code in the
> > kernel, even though I think there is not much to be gained in the jump
> > from 486 to 586. Not like getting rid of 386 anyway. What didI miss?
>
> Kernel tweaking is not supported, and doesn't really help anyway.
> Remember: GNU is Not Unix (and neither is Linux).
>
> Joachim

Thanks for the quick write-back. I haven't used Linux in years (I'm a
FreeBSD-er), but didn't want to make assumptions about OpenBSD's
behavior.

thx,

r

Specifically, tweaking gcc flags will lead to trouble... we've had the issue
in the past. gcc is mostly not THAT stable, and changing the flags used to
compile the kernel WILL break things!