-# Some useful GHC version predicates:
-ghc_ge_605 = @ghc_ge_605@
-ghc_ge_607 = @ghc_ge_607@
+# We build a few packages using the installed GHC as part of the
+# bootstrapping process. These are installed into a local
+# package.conf file, $(BOOTSTRAPPING_CONF). When we invoke the
+# installed GHC we need to pass it -package-conf $(BOOTSTRAPPING_CONF).
+# So the following variables expand to -package-conf $(BOOTSTRAPPING_CONF)
+# when $(HC) does *not* point to one of the GHC binaries built in
+# the local tree.
+#
+BOOTSTRAPPING_PACKAGE_CONF_HC_OPTS =$(if $(findstring inplace, $(HC)),,-package-conf $(BOOTSTRAPPING_CONF))
+BOOTSTRAPPING_PACKAGE_CONF_MKDEPENDHS_OPTS =$(if $(findstring inplace, $(MKDEPENDHS)),,-package-conf $(BOOTSTRAPPING_CONF))