diff --git a/make/Makefile b/make/Makefile
index 5a1d3c46..629ff055 100644
--- a/make/Makefile
+++ b/make/Makefile
@@ -18,4 +18,7 @@ install: $(INSTALL_MAKEDIR)/winres.rc.tmpl
 endif
 
 $(INSTALL_MAKEDIR)/%.tmpl: %.tmpl $(TOPDIR)/dir_install_MAKE.done
-	$(INSTALL) -o $(MAKEOWNER) -g $(MAKEGROUP) -m $(MAKEMODE) $< $@
+	$(INSTALL) -o $(MAKEOWNER) -g $(MAKEGROUP) -m $(MAKEMODE) $< $@A
+
+echo-vars:
+	@sed '/^ *[A-Z]/!d; s/^[        ]*//g; s/[=+?:].*//g; s/[       ]*//g' *.mk | sort -u