+# -----------------------------------------------------------------------------
+#
+# (c) 2010 The University of Glasgow
+#
+# This file is part of the GHC build system.
+#
+# 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
+#
+# -----------------------------------------------------------------------------
+
+define profStart
+$$(if $(PROF),$$(info $$(shell date +%s.%N): Start $1))
+endef
+
+define profEnd
+$$(if $(PROF),$$(info $$(shell date +%s.%N): End $1))
+endef
+