+####################
+CLEANTARGETS=$(addprefix del-,$(notdir $(filter-out %.log,$(wildcard cache/bridge.*))))
+clean: $(CLEANTARGETS)
+distclean:
+ rm -rf L U cache
+.PHONY: clean distclean
+
+####################
+graph.dot:
+ ( echo "digraph $(SLICE) {"; ls L | sed 's/$(SEP)/->/;s/$$/;/'; echo "}" ) > $@
+graph.ps: graph.dot
+ dot -Tps < $^ > $@
+
+####################
+# 'virtual' targets in that there's no real file attached
+define node_shortcuts
+sshcheck.$(1): cache/sshcheck.$(1) FORCE
+db.$(1): cache/db.$(1) FORCE
+switch.$(1): cache/switch.$(1) FORCE
+start.$(1): cache/start.$(1) FORCE
+stop.$(1): cache/stop.$(1) FORCE
+status.$(1): cache/status.$(1) FORCE
+bridge.$(1): cache/bridge.$(1) FORCE
+host.$(1): cache/host.$(1) FORCE
+# switch already depends on db, but well
+cache/start.$(1): cache/db.$(1) cache/switch.$(1) FORCE
+endef
+
+$(foreach id,$(ALL_NODE_IDS), $(eval $(call node_shortcuts,$(id))))
+
+define link_shortcuts
+iface.%: cache/iface.%
+link.%: cache/link.%
+endef
+
+$(foreach id,$(ALL_LINK_IDS), $(eval $(call link_shortcuts,$(id))))
+
+#################### convenience, for debugging only
+# make +foo : prints the value of $(foo)
+# make ++foo : idem but verbose, i.e. foo=$(foo)
+++%: varname=$(subst +,,$@)
+++%:
+ @echo "$(varname)=$($(varname))"
++%: varname=$(subst +,,$@)
++%:
+ @echo "$($(varname))"