--- mercury-extras-0.12.2.orig/references/Mmakefile	2004-02-17 13:00:24.000000000 +1300
+++ mercury-extras-0.12.2/references/Mmakefile	2006-04-01 16:15:40.000000000 +1200
@@ -10,7 +10,9 @@
 
 # Install in an "extras" subdirectory of the main installation tree
 INSTALL_PREFIX := $(INSTALL_PREFIX)/extras
-LIBGRADES = asm_fast.gc.tr asm_fast.gc.tr.debug
+LIBGRADES := 	$(foreach grade,$(LIBGRADES), \
+		$(subst .tr.,$(grade),$(findstring .tr.,$(grade))) \
+		$(filter %.tr,$(grade)))
 
 MAIN_TARGET = libglobal