[SOLVED]Compiling x86 kernel on x86_64?

[Eidi]

Uh... I got a weird problem. I'm not sure if anyone has gotten into it before but... I want to make a home server out of this really old box, but it's so old, it can't boot from a CD. So, I took the harddrive out and put it in my main box, a 64 bit one, running Gentoo natively at 64 bit. What I did was, just boot into my regular install, and partition and mount the harddrive from there. Most of the install went fine, but now I'm at compiling the kernel, and when I try it, the processor type only has options for 64 bit kernels...

I assume the rest of the install is fine though, I have my make.conf set for a i386 processor (Hmm... Are there any specific settings for a really, really old Celeron? Doubt it, but I figured I'd ask.)

I can't burn an x86 Gentoo CD at the moment, and the only live CD I have is an old Knoppix 3.2 CD, but I could probably chroot from that and compile a 32 bit kernel just fine... However, I was wondering if I could do it without booting into another environment? Thanks.

[Jake]

emerge linux32, chroot into your installation for the old machine by doing "linux32 chroot /mnt/old_drive", and it should show up as i686. Fortunately, all Celerons are i686. The low end ones are pentium 2s with less cache and a slower FSB, both of which seriously cripple performance. Since I don't see a celeron option in the GCC man page, use "-march=i686" or "-march=pentium2", possibly with "-Os" because of the low cache, otherwise stick to the safe "-O2". Note that you'll have to change your CHOST to get i686 optimizations if you currently have i386-pc-linux-gnu. See http://forums.gentoo.org/viewtopic-t-41 ... ight-.html

[Eidi]

Woot, "linux32 chroot /mnt/blah" worked great for me! Thanks!

And thanks for that info, I'll change that ASAP.

My own WordPress server, here I come! :)