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diff --git a/ghc/Makefile b/ghc/Makefile
index 422df02..7e6b416 100644
--- a/ghc/Makefile
+++ b/ghc/Makefile
@@ -1,29 +1,37 @@
-#-----------------------------------------------------------------------------
-# $Id: Makefile,v 1.5 1997/03/19 20:44:51 simonpj Exp $
+# -----------------------------------------------------------------------------
 #
-
-TOP=.
-include $(TOP)/mk/boilerplate.mk
-
-#
-# subdir dependencies:
-#	everything needs utils
-#	includes/ needs driver (to easily c.pile mkNativeGen.c)
-#	make depend except in {utils,driver} needs includes	
-#	RTS and compiler need includes
-#
-
+# (c) 2009 The University of Glasgow
 #
-# Order is important! driver/ has to come before includes/ which
-# again has to come before the rest.
+# This file is part of the GHC build system.
 #
-# If we're booting from .hc files, swap the order
-# we descend into compiler/ and lib/
+# To understand how the build system works and how to modify it, see
+#      http://hackage.haskell.org/trac/ghc/wiki/Building/Architecture
+#      http://hackage.haskell.org/trac/ghc/wiki/Building/Modifying
 #
-ifeq "$(GhcWithHscBuiltViaC)" "NO"
-SUBDIRS = utils driver includes runtime compiler lib
-else
-SUBDIRS = utils driver includes runtime lib compiler
-endif
+# -----------------------------------------------------------------------------
+
+dir = ghc
+TOP = ..
+SPEC_TARGETS = 1 2 3
+include $(TOP)/mk/sub-makefile.mk
+
+.PHONY: 1 2 3
+
+1:
+	+$(TOPMAKE) stage=1 all_ghc_stage1 compiler_stage1_NO_BUILD_DEPS=YES
+
+2:
+	+$(TOPMAKE) stage=2 all_ghc_stage2 compiler_stage2_NO_BUILD_DEPS=YES
+
+3:
+	+$(TOPMAKE) stage=3 all_ghc_stage3 compiler_stage3_NO_BUILD_DEPS=YES
 
-include $(TOP)/mk/target.mk
+.PHONY: extra-help
+help : extra-help
+extra-help :
+	@echo "  make 1"
+	@echo "  make 2"
+	@echo "  make 3"
+	@echo
+	@echo "     Build the stage 1, 2 or 3 GHC respectively, omitting dependencies"
+	@echo "     and initial phases for speed."