error in bootstrap when building amd64

[Matthias Lange]

On Tue, Oct 01, 2013 at 02:50:42PM +0200, Joel Nider wrote:
> Hi,
> 
> >> ? ==> Linking bootstrap32.elf
> >> /usr/bin/ld: skipping incompatible
> >> /usr/lib/gcc/x86_64-linux-gnu/4.6/libgcc.a when searching for -lgcc
> >> /usr/bin/ld: cannot find -lgcc
> >> collect2: ld returned 1 exit status
> >> make[4]: *** [bootstrap32.elf] Error 1
> >> > Any ideas how to fix it?
> >
> >I guess a 32bit version of libgcc might be missing on your system.
> 
> It is not clear to me why I need a 32-bit bootstrap image when I am
> trying to build a 64-bit kernel.  Is it possible for me to
> disable/skip this particular file? Everything else seems to build
> fine.

Because there are not so many MBI compliant 64bit boot managers around. Grub
starts bootstrap in 32bit mode which will then enable long mode before
starting the kernel.

Best,
Matthias.