Description: Backported patch from xen-devel
 Some GNU systems (including Debian) do not use /usr/lib64 [1].  This
 change makes it easier to have the Xen build system on amd64 put its
 64-bit libraries files in /usr/lib.
 Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Origin: upstream, http://lists.xensource.com/archives/html/xen-devel/2010-09/msg00667.html
Index: xen-4.0-4.0.1/config/StdGNU.mk
===================================================================
--- xen-4.0-4.0.1.orig/config/StdGNU.mk	2010-08-25 10:22:42.000000000 +0200
+++ xen-4.0-4.0.1/config/StdGNU.mk	2011-01-04 19:08:17.386079236 +0100
@@ -28,7 +28,7 @@
 INCLUDEDIR = $(PREFIX)/include
 LIBLEAFDIR = lib
 LIBLEAFDIR_x86_32 = lib
-LIBLEAFDIR_x86_64 = lib64
+LIBLEAFDIR_x86_64 ?= lib64
 LIBDIR = $(PREFIX)/$(LIBLEAFDIR)
 LIBDIR_x86_32 = $(PREFIX)/$(LIBLEAFDIR_x86_32)
 LIBDIR_x86_64 = $(PREFIX)/$(LIBLEAFDIR_x86_64)