[CentOS] centos 4.6 - 586 install - how to get that to a 486 level if possible

Kevin K k_krieser at sbcglobal.net
Sat Jun 21 16:53:40 UTC 2008

I tried RHEL 3 (I believe) on a Pentium class system, and that did not work

For everything but the kernel, there was a 386 version available (glibc,
ssl, etc), so we recompiled the kernel for the 586.

Unfortunately, glibc, when you compile it for anything below a 686, did not
support NTPL threads, causing nothing but heartache.  Luckily, before we got
too far, we learned we didn't have to target the Pentium based computer
anymore.  I am happy we didn't have to validate everything still worked when
something as major as glibc is rebuilt (since I started looking whether it
was possible to rebuild glibc for 586 and NTPL).  Kernels are less risky,
since people rebuild them more frequently.

-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On Behalf
Of Johnny Hughes
Sent: Friday, June 20, 2008 8:49 PM
To: CentOS mailing list
Subject: Re: [CentOS] centos 4.6 - 586 install - how to get that to a 486
level if possible

Jerry Geis wrote:
> Is there a method to get a 586 (i586 text) install  to a 486 level?
> I am looking for information guidance on this.
> I have looked into using debian/386 which stinks in my opinion, 
> slackware doesnt quite have it either.
> So I am wishing/hoping there is a NOT TO painful way to get a 586 
> install to run on a 486 chip.

This would be almost impossible with centos.

The reason is that there are things that glibc will compile in that are not
i486 compatible

You would be much better off trying to do this with debian I think.

If it were possible, it would be by installing the i386 glibc, i386 openssl
and editing the kernel spec file and the config file.

You can try to change the processor type to i386 or i486 and see if it will
work ... however I do not think it is possible on other than
centos-3 to get an i386 compile.

> I have been searching but havent found anything useful. If anyone 
> knows what might need to be done I would appreciate it.

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