[Xen-devel] [PATCH 1/4] interface: avoid redefinition of __XEN_INTERFACE_VERSION__

[Juergen Gross <jgross@xxxxxxxx>]

In stubdom environment __XEN_INTERFACE_VERSION__ is sometimes defined
on the command line of the build instruction. This conflicts with
xen-compat.h defining it unconditionally if __XEN__ or __XEN_TOOLS__
is set.

Just use #undef in this case to avoid the resulting warning.

Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
 xen/include/public/xen-compat.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xen/include/public/xen-compat.h b/xen/include/public/xen-compat.h
index b673653..9453439 100644
--- a/xen/include/public/xen-compat.h
+++ b/xen/include/public/xen-compat.h
@@ -31,6 +31,7 @@
 
 #if defined(__XEN__) || defined(__XEN_TOOLS__)
 /* Xen is built with matching headers and implements the latest interface. */
+#undef __XEN_INTERFACE_VERSION__
 #define __XEN_INTERFACE_VERSION__ __XEN_LATEST_INTERFACE_VERSION__
 #elif !defined(__XEN_INTERFACE_VERSION__)
 /* Guests which do not specify a version get the legacy interface. */
-- 
2.10.2


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