diff --git a/Makefile b/Makefile
index 63e5c9f..2402430 100644
--- a/Makefile
+++ b/Makefile
@@ -776,14 +776,14 @@
 # A multi level approach is used. prepare1 is updated first, then prepare0.
 # prepare-all is the collection point for the prepare targets.
 
-.PHONY: prepare-all prepare prepare0 prepare1 prepare2
+.PHONY: prepare-all prepare prepare0 prepare1 prepare2 prepare3
 
-# prepare2 is used to check if we are building in a separate output directory,
+# prepare3 is used to check if we are building in a separate output directory,
 # and if so do:
 # 1) Check that make has not been executed in the kernel src $(srctree)
 # 2) Create the include2 directory, used for the second asm symlink
 
-prepare2:
+prepare3:
 ifneq ($(KBUILD_SRC),)
 	@echo '  Using $(srctree) as source for kernel'
 	$(Q)if [ -f $(srctree)/.config ]; then \
@@ -795,18 +795,21 @@
 	$(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
 endif
 
-# prepare1 creates a makefile if using a separate output directory
-prepare1: prepare2 outputmakefile
+# prepare2 creates a makefile if using a separate output directory
+prepare2: prepare3 outputmakefile
 
-prepare0: prepare1 include/linux/version.h include/asm \
+prepare1: prepare2 include/linux/version.h include/asm \
                    include/config/MARKER
 ifneq ($(KBUILD_MODULES),)
 	$(Q)rm -rf $(MODVERDIR)
 	$(Q)mkdir -p $(MODVERDIR)
 endif
 
+prepare0: prepare prepare1 FORCE
+	$(Q)$(MAKE) $(build)=$(srctree)
+
 # All the preparing..
-prepare-all: prepare0 prepare
+prepare-all: prepare0
 
 #	Leave this as default for preprocessing vmlinux.lds.S, which is now
 #	done in arch/$(ARCH)/kernel/Makefile
@@ -949,26 +952,6 @@
 
 endif # CONFIG_MODULES
 
-# Generate asm-offsets.h 
-# ---------------------------------------------------------------------------
-
-define filechk_gen-asm-offsets
-	(set -e; \
-	 echo "#ifndef __ASM_OFFSETS_H__"; \
-	 echo "#define __ASM_OFFSETS_H__"; \
-	 echo "/*"; \
-	 echo " * DO NOT MODIFY."; \
-	 echo " *"; \
-	 echo " * This file was generated by arch/$(ARCH)/Makefile"; \
-	 echo " *"; \
-	 echo " */"; \
-	 echo ""; \
-	 sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \
-	 echo ""; \
-	 echo "#endif" )
-endef
-
-
 ###
 # Cleaning is done on three levels.
 # make clean     Delete most generated files
@@ -991,7 +974,7 @@
 #
 clean: rm-dirs  := $(CLEAN_DIRS)
 clean: rm-files := $(CLEAN_FILES)
-clean-dirs      := $(addprefix _clean_,$(vmlinux-alldirs))
+clean-dirs      := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
 
 .PHONY: $(clean-dirs) clean archclean
 $(clean-dirs):