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Re: [Xen-devel] Re: [PATCH] Fix __XEN_INTERFACE_VERSION__ old config bre

On 7 Apr 2006, at 10:10, Magnus Damm wrote:

I'm afraid that I know too little about xen to say something about how
multiple interface versions are supposed to work, but I think your
plan of failing instead of building an inconsistent kernel sounds

My main concern was that the code didn't build with my old config
file, and the error message produced by the c-compiler was far from
user friendly. If the kernel build should fail then I would prefer
some see some kind of #error message.


Yes, that would be nice and preferably generated from within xen-compat.h so the check is not specific to Linux. But I'm not sure whether it's possible to detect an empty macro definition from CPP?

 -- Keir

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