[Xen-changelog] [linux-2.6.18-xen] Fix Makefile.xen generation when building external modules

["Xen patchbot-linux-2.6.18-xen" <patchbot-linux-2.6.18-xen@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1245146770 -3600
# Node ID 214ff2a7c9900f5d8bac55a569224a0029173a0f
# Parent  ca12928cdafe3fcb024520c4fe2479448f2c5f46
Fix Makefile.xen generation when building external modules

Otherwise, the file will be (attempted to be) put in the (possibly
read-only) source tree.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
---
 scripts/Makefile.build |    4 +++-
 1 files changed, 3 insertions(+), 1 deletion(-)

diff -r ca12928cdafe -r 214ff2a7c990 scripts/Makefile.build
--- a/scripts/Makefile.build    Mon Jun 08 12:23:24 2009 +0100
+++ b/scripts/Makefile.build    Tue Jun 16 11:06:10 2009 +0100
@@ -69,7 +69,8 @@ endif
 endif
 
 ifeq ($(CONFIG_XEN),y)
-$(objtree)/scripts/Makefile.xen: $(srctree)/scripts/Makefile.xen.awk 
$(srctree)/scripts/Makefile.build
+Makefile.xen := $(if 
$(KBUILD_EXTMOD),$(KBUILD_EXTMOD),$(objtree)/scripts)/Makefile.xen
+$(Makefile.xen): $(srctree)/scripts/Makefile.xen.awk 
$(srctree)/scripts/Makefile.build
        @echo '  Updating $@'
        $(if $(shell echo a | $(AWK) '{ print gensub(/a/, "AA", "g"); }'),\
         ,$(error 'Your awk program does not define gensub.  Use gawk or 
another awk with gensub'))
@@ -79,7 +80,7 @@ xen-single-used-m     := $(xen-src-single-us
 xen-single-used-m      := $(xen-src-single-used-m:-xen.c=.o)
 single-used-m          := $(filter-out $(xen-single-used-m),$(single-used-m))
 
--include $(objtree)/scripts/Makefile.xen
+-include $(Makefile.xen)
 endif
 
 # ===========================================================================

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