-# Every directory with .c files (other than _info.c) is included.
-DIRS=$(patsubst %/, %, $(sort $(dir $(wildcard ccan/*/[a-z]*.c))))
+# Every directory with .c files is included.
+DIRS=$(filter-out $(EXCLUDE), $(patsubst %/, %, $(sort $(dir $(wildcard ccan/*/*.c)))))
+
+# Generate everyone's separate Makefiles.
+-include $(foreach dir, $(DIRS), $(dir)-Makefile)
+
+ccan/%-Makefile:
+ @echo $@: $(wildcard ccan/$*/*.[ch]) ccan/$*/_info > $@
+ @echo ccan/$*.o: $(patsubst %.c, %.o, $(wildcard ccan/$*/*.c)) >> $@