diff --git a/configure.in b/configure.in
index a14aee074..30ae3045c 100644
--- a/configure.in
+++ b/configure.in
@@ -2212,7 +2212,14 @@ AC_SUBST(DEFAULT_GRADE)
 LIBGRADES=` echo " $LIBGRADES " | sed "s/ $GRADE / /" `
 MERCURY_MSG("using \`LIBGRADES=$LIBGRADES' as the set of library grades to install")
 
+LIBGRADE_OPTS=
+for libgrade in $LIBGRADES
+do
+	LIBGRADE_OPTS="$LIBGRADE_OPTS --libgrade $libgrade"
+done
+
 AC_SUBST(LIBGRADES)
+AC_SUBST(LIBGRADE_OPTS)
 
 #-----------------------------------------------------------------------------#
 #
diff --git a/scripts/mmc.in b/scripts/mmc.in
index baf4e45bc..6131dce92 100644
--- a/scripts/mmc.in
+++ b/scripts/mmc.in
@@ -49,6 +49,8 @@ DEFAULT_MCFLAGS=${DEFAULT_MCFLAGS="\
 		--create-archive-command-flags \"@ARFLAGS@\" \
 		--ranlib-command \"@RANLIB@\" \
 		--fullarch \"@FULLARCH@\" \
+		--install-prefix \"@prefix@\" \
+		@LIBGRADE_OPTS@ \
 		--num-real-r-regs \"@NUM_REAL_R_REGS@\" \
 		--num-real-r-temps \"@NUM_REAL_R_TEMPS@\" \
 		--conf-low-tag-bits \"@LOW_TAG_BITS@\" \