Re: copy lfs build to older CPU

On Fri, 2025-09-26 at 18:42 +0200, Thomas Seeling wrote:
> Hallo,
> 
> > P.S. and simply making a DESTDIR installation of GMP would be also not
> > enough.  When you rebuild MPFR the gmp.h must be from the new GMP build
> > so the CFLAGS in gmp.h won't contain offending a -march= flag.
> I installed the recompiled gmp package, should that do it?

You need to rebuild [at least] MPFR with the recompiled GMP package
installed.

As I've mentioned in the previous reply, the problem is GMP building
system codes the -march= option used for building GMP into gmp.h, and
the MPFR building system reads it out from gmp.h and uses it.

And [at least] here means I don't know if there are other packages using
GMP reading the -march= option from gmp.h as well.  If there's any, it
needs to be rebuilt too.

-- 
Xi Ruoyao <[email protected]>

-- 
http://lists.linuxfromscratch.org/sympa/info/lfs-support
Unsubscribe: See the above information page