Hi Keir and Ian,

>>>>> On Fri, 29 Oct 2010 08:55:31 +0100
>>>>> keir@xen.org(Keir Fraser)  said:
> 
> I think it would ne neater to have your own
> tools/libxc/ia64/ac_ia64_tools.h, and then conditionally include that from
> Xen's acenv.h (e.g., dependent on __XEN_TOOLS__).

I created a patch for Keir's first advice.

This patch introduces ac_ia64_tools.h and it only defines identifiers
in order to avoid compilation errors.

Because all identifiers can be easily led from the error message, 
it is trivial.

Any comments?

Best regards,
-- 
  KUWAMURA Shin'ya