[PATCH] [HVM] Allow mkbuildtree to override XEN and XL

[Ben Guthro <bguthro@virtualiron.com>]

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mkbuildtree.patch
    Previous versions of mkbuildtree allowed XL to be overridden. With
the introduction of the XEN variable, this functonality was removed.
This patch gives the flexibility to override XL, and XEN on the command
line.

Signed-off-by: Ben Guthro <bguthro@virtualiron.com>


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diff -r d4a0706d6747 unmodified_drivers/linux-2.6/mkbuildtree
--- a/unmodified_drivers/linux-2.6/mkbuildtree	Tue May 15 15:14:02 2007 +0100
+++ b/unmodified_drivers/linux-2.6/mkbuildtree	Fri May 18 07:48:18 2007 -0400
@@ -10,8 +10,17 @@ fi
 
 C=$PWD
 
-XEN=$C/../../xen
-XL=$C/../../linux-2.6-xen-sparse
+if [ -n "$XEN" -a -d "$XEN" ]; then
+	XEN=$(cd $XEN && pwd)
+else
+	XEN=$C/../../xen
+fi
+
+if [ -n "$XL" -a -d "$XL" ]; then
+	XL=$(cd $XL && pwd)
+else
+	XL=$C/../../linux-2.6-xen-sparse
+fi
 
 for d in $(find ${XL}/drivers/xen/ -maxdepth 1 -type d | sed -e 1d); do
     if ! echo $d | egrep -q back; then

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