Re: copy lfs build to older CPU

On Mon, 2025-09-22 at 15:06 -0500, Douglas R. Reno wrote:
> On 9/22/25 11:55 AM, Rainer Fiebig ([email protected] via lfs-support 
> Mailing List) wrote:
> > Am 22.09.25 um 16:37 schrieb Thomas Seeling ([email protected] via
> > lfs-support Mailing List):
> > > Hello dear list,
> > > 
> > > I experimented (again) with moving a completed build of 12.4 64 bit to
> > > an older machine.
> > > My build machine has an i7-6700, and I unpacked this to an older i5-3350
> > > after it successfully finished.
> > > At first glance everything seemed to look fine until I tried to compile
> > > ethtool (to gain WOL capability).
> > > The `configure`  script went through but while compiling the source I
> > > got an "illegal instruction" abort from gcc.
> > > That was a bit surprising. I compiled the `gmp`  package as recommended
> > > with ` --host=none-linux-gnu`.
> > Also thought of libffi?
> > 
> > Rainer
> 
> libffi is also a very good one!

That's why we have section 8.2.3 of the LFS book.  I really expect
people to read the entire book even if some sections do not contain
instructions.

-- 
Xi Ruoyao <[email protected]>

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