Index: 2006-01-05/arch/i386/boot-xen/Makefile
===================================================================
--- 2006-01-05.orig/arch/i386/boot-xen/Makefile	2006-01-05 17:12:44.075909792 +0100
+++ 2006-01-05/arch/i386/boot-xen/Makefile	2006-01-05 11:53:15.000000000 +0100
@@ -11,8 +11,13 @@ $(obj)/vmlinux-stripped: vmlinux FORCE
 
 INSTALL_ROOT := $(patsubst %/boot,%,$(INSTALL_PATH))
 
+ifeq ($(INSTALL_ROOT),)
+install.sh := $(shell find $(srctree)/arch/$(ARCH) -name install.sh)
+endif
+
 XINSTALL_NAME ?= $(KERNELRELEASE)
 install: $(BOOTIMAGE)
+ifeq ($(install.sh),)
 	mkdir -p $(INSTALL_PATH)
 	ln -f -s vmlinuz-$(XINSTALL_NAME)$(INSTALL_SUFFIX) $(INSTALL_PATH)/vmlinuz-$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(XENGUEST)$(INSTALL_SUFFIX)
 	rm -f $(INSTALL_PATH)/vmlinuz-$(XINSTALL_NAME)$(INSTALL_SUFFIX)
@@ -23,4 +28,6 @@ install: $(BOOTIMAGE)
 	ln -f -s vmlinuz-$(XINSTALL_NAME)$(INSTALL_SUFFIX) $(INSTALL_PATH)/vmlinuz-$(VERSION).$(PATCHLEVEL)$(XENGUEST)$(INSTALL_SUFFIX)
 	mkdir -p $(INSTALL_ROOT)/usr/include/xen/linux
 	install -m0644 $(srctree)/include/xen/public/*.h $(INSTALL_ROOT)/usr/include/xen/linux
-
+else
+	sh $(install.sh) $(KERNELRELEASE) $< System.map "$(INSTALL_PATH)"
+endif