From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nathan Lynch <ntl-e+AXbWqSrlAAvxtiuMwx3w@public.gmane.org>
Subject: build breaks when checkpoint unimplemented by arch
Date: Mon, 06 Jul 2009 16:06:15 -0500
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To: Oren Laadan <orenl-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
Cc: containers-qjLDD68F18O7TbgM5vRIOg@public.gmane.org
List-Id: containers.vger.kernel.org

Hi Oren,

With ckpt-v17-rc1 (as well as ckpt-v16-dev) the powerpc build is broken:

In file included from include/linux/checkpoint.h:28,
                 from kernel/exit.c:53:
include/linux/checkpoint_hdr.h:42:32: error: asm/checkpoint_hdr.h: No such file or directory
In file included from include/linux/checkpoint.h:28,
                 from kernel/exit.c:53:
include/linux/checkpoint_hdr.h:410: error: 'CKPT_ARCH_NSIG' undeclared here (not in a function)
make[1]: *** [kernel/exit.o] Error 1


It appears that any architecture which does not supply
asm/checkpoint_hdr.h is broken in the same way.

Either all architectures need to supply asm/checkpoint_hdr.h (and define
CKPT_ARCH_NSIG), or there needs to be some other fix which allows
as-yet-unsupported arches to build..