Crosscompiling from 32bits to 64bits on AMD64
gomoko at yahoo.com
Wed Nov 9 23:37:25 PST 2005
--- Ken Moffat <ken at linuxfromscratch.org> wrote:
> On Wed, 9 Nov 2005, Matt Darcy wrote:
> > Your rebooting into your system that is held on
> /mnt/lfs - so it will not
> > overwrite any of your host system binaries or
> > so instead of chrooting into /mnt/lfs
> > your booting a system that lives on /mnt/lfs
> > You only boot to allow a 64bit kernel so you can
> use your 64bit tools to make
> > your final syste,
> > does that make sense to you ?
> For completeness, you could always cross-compile a
> 64-bit kernel
> without modules and tell the bootloader to use that
> with the 32-bit
> userspace (host) system, reboot into that, mount the
> tools you've built
> at /mnt/lfs, then chroot.
> As Stan said, don't forget to enable IA_32
> emulation in the 64-bit
> kernel if you do this or if you build multilib.
Thanks for your responses.
Matt, I understand what you mean, but I forget to
mention that as I'm building LFS 64bits on top of LFS
32bits, I use the same partition (a little change from
the book). So chroot is not possible directly,
although the book mention it as a choice. Perhaps it
would worth being signaled in the paragraph "To chroot
or to boot". I don't know if it's the right place to
make this sort of demand.
Ken, your solution please me very well, because in my
configuration, I prefer a chroot, and it's a good
method to chroot without big changes, just a
compilation of kernel and copy on the old system and
reboot. IMHO, this point is also a good indication to
write on the book for the choice of chroot or boot.
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
More information about the cross-lfs