makefiles: Add a dummy dependency on empty targets to work around a FreeBSD make bug.
diff --git a/Make.rules.in b/Make.rules.in
index 3645603..5dc8884 100644
--- a/Make.rules.in
+++ b/Make.rules.in
@@ -271,10 +271,10 @@
$(SUBDIRS:%=%/__uninstall__): dummy
@cd `dirname $@` && $(MAKE) uninstall
-install:: $(INSTALLSUBDIRS:%=%/__install__)
-install-lib:: $(INSTALLSUBDIRS:%=%/__install-lib__)
-install-dev:: $(INSTALLSUBDIRS:%=%/__install-dev__)
-uninstall:: $(INSTALLSUBDIRS:%=%/__uninstall__)
+install:: $(INSTALLSUBDIRS:%=%/__install__) dummy
+install-lib:: $(INSTALLSUBDIRS:%=%/__install-lib__) dummy
+install-dev:: $(INSTALLSUBDIRS:%=%/__install-dev__) dummy
+uninstall:: $(INSTALLSUBDIRS:%=%/__uninstall__) dummy
$(INSTALLDIRS):
$(MKINSTALLDIRS) $@
@@ -294,11 +294,11 @@
$(TESTSUBDIRS:%=%/__testclean__): dummy
@cd `dirname $@` && $(MAKE) testclean
-check test:: $(TESTSUBDIRS:%=%/__test__)
+check test:: $(TESTSUBDIRS:%=%/__test__) dummy
-crosstest:: $(TESTSUBDIRS:%=%/__crosstest__)
+crosstest:: $(TESTSUBDIRS:%=%/__crosstest__) dummy
-testclean:: $(TESTSUBDIRS:%=%/__testclean__)
+testclean:: $(TESTSUBDIRS:%=%/__testclean__) dummy
.PHONY: check test testclean crosstest $(TESTSUBDIRS:%=%/__test__) $(TESTSUBDIRS:%=%/__crosstest__) $(TESTSUBDIRS:%=%/__testclean__)