+-include ccan/*/*.d
+
+# Anything with an _info file is a module.
+REALLY_ALL=$(patsubst ccan/%/_info, %, $(wildcard ccan/*/_info))
+
+# Exclude any modules we can't build.
+ALL=$(filter-out $(EXCLUDE), $(REALLY_ALL))
+
+# Anything with C files needs building; dir leaves / on, sort uniquifies
+DIRS=$(patsubst %/, %, $(sort $(foreach m, $(ALL), $(dir $(wildcard ccan/$m/*.c)))))