diff --git a/scripts/Mmake.vars.in b/scripts/Mmake.vars.in
index 7b14c15f8..5165ff493 100644
--- a/scripts/Mmake.vars.in
+++ b/scripts/Mmake.vars.in
@@ -529,8 +529,6 @@ useds_subdir=$(SUBDIR)useds/
 mihs_subdir=$(SUBDIR)mihs/
 cs_subdir=$(SUBDIR)cs/
 dlls_subdir=$(SUBDIR)dlls/
-ss_subdir=$(SUBDIR)ss/
-pic_ss_subdir=$(SUBDIR)pic_ss/
 os_subdir=$(SUBDIR)os/
 javas_subdir=$(SUBDIR)javas/
 dirs_subdir=$(SUBDIR)dirs/
@@ -565,8 +563,6 @@ useds_subdir=
 mihs_subdir=
 cs_subdir=
 dlls_subdir=
-ss_subdir=
-pic_ss_subdir=
 os_subdir=
 javas_subdir=
 dirs_subdir=
diff --git a/tests/par_conj/Mmakefile b/tests/par_conj/Mmakefile
index d04b34bab..793a36847 100644
--- a/tests/par_conj/Mmakefile
+++ b/tests/par_conj/Mmakefile
@@ -104,24 +104,13 @@ endif
 # `mmc --make' doesn't expect subdirectories to appear in targets.
 ifeq ($(MMAKE_USE_MMC_MAKE),yes)
 OS_SUBDIR=
-ILS_SUBDIR=
-DLLS_SUBDIR=
 else
 OS_SUBDIR=$(os_subdir)
-ILS_SUBDIR=$(ils_subdir)
-DLLS_SUBDIR=$(dlls_subdir)
 endif
 
-
-ifeq ($(findstring il,$(GRADE)),il)
-	TARGET_OBJ_EXT=dll
-	TARGET_OBJ_SUBDIR=$(DLLS_SUBDIR)
-else
-	TARGET_OBJ_EXT=$(O)
-	TARGET_OBJ_SUBDIR=$(OS_SUBDIR)
-endif
-OBJS =	$(OBJ_PROGS:%=$(TARGET_OBJ_SUBDIR)%.$(TARGET_OBJ_EXT)) \
-		$(IL_PROGS:%=$(ILS_SUBDIR)%.il)
+TARGET_OBJ_EXT=$(O)
+TARGET_OBJ_SUBDIR=$(OS_SUBDIR)
+OBJS =	$(OBJ_PROGS:%=$(TARGET_OBJ_SUBDIR)%.$(TARGET_OBJ_EXT))
 
 #-----------------------------------------------------------------------------#
 
diff --git a/tests/stm/Mmakefile b/tests/stm/Mmakefile
index 58a5d9ed7..a8e7d39da 100644
--- a/tests/stm/Mmakefile
+++ b/tests/stm/Mmakefile
@@ -62,23 +62,13 @@ endif
 # `mmc --make' doesn't expect subdirectories to appear in targets.
 ifeq ($(MMAKE_USE_MMC_MAKE),yes)
 OS_SUBDIR =
-ILS_SUBDIR =
-DLLS_SUBDIR =
 else
 OS_SUBDIR = $(os_subdir)
-ILS_SUBDIR = $(ils_subdir)
-DLLS_SUBDIR = $(dlls_subdir)
 endif
 
-ifeq ($(findstring il,$(GRADE)),il)
-	TARGET_OBJ_EXT = dll
-	TARGET_OBJ_SUBDIR = $(DLLS_SUBDIR)
-else
-	TARGET_OBJ_EXT = $(O)
-	TARGET_OBJ_SUBDIR = $(OS_SUBDIR)
-endif
-OBJS =	$(OBJ_PROGS:%=$(TARGET_OBJ_SUBDIR)%.$(TARGET_OBJ_EXT)) \
-		$(IL_PROGS:%=$(ILS_SUBDIR)%.il)
+TARGET_OBJ_EXT = $(O)
+TARGET_OBJ_SUBDIR = $(OS_SUBDIR)
+OBJS =	$(OBJ_PROGS:%=$(TARGET_OBJ_SUBDIR)%.$(TARGET_OBJ_EXT))
 
 #-----------------------------------------------------------------------------#
 
diff --git a/tools/bootcheck b/tools/bootcheck
index 86e2f9c0f..5a1aebafe 100755
--- a/tools/bootcheck
+++ b/tools/bootcheck
@@ -434,13 +434,9 @@ fi
 case $use_subdirs in
    yes)
         cs_subdir=Mercury/cs/
-        ss_subdir=Mercury/ss/
-        ils_subdir=Mercury/ils/
         ;;
     no)
         cs_subdir=
-        ss_subdir=
-        ils_subdir=
         ;;
 esac