Makefile fixes: we now do dependencies properly for each ccan module.

Makefile

@@ -48,7 +48,7 @@ libccan.a(%.o): ccan/%.o
 
 clean: tools-clean
 	$(RM) `find . -name '*.o'` `find . -name '.depends'` `find . -name '*.a'`  `find . -name info` `find . -name '*.d'`
-	$(RM) inter-depends lib-depends test-depends
+	$(RM) inter-depends lib-depends test-depends ccan/*-Makefile
 
 # Creates a dependency from the tests to the object files which it needs.
 inter-depends: $(ALL_DEPENDS) Makefile

Makefile-ccan

@@ -5,21 +5,28 @@
 #CFLAGS=-g -O3 -Wall -Wstrict-prototypes -Wold-style-definition -Wmissing-prototypes -Wmissing-declarations -Werror -I. $(DEPGEN)
 CFLAGS=-g -Wall -Wstrict-prototypes -Wold-style-definition -Werror -I. $(DEPGEN)
 
-# Automatic dependency generation: makes ccan/*.d files.
+default: libccan.a
+
+# Automatic dependency generation: makes ccan/*/*.d files.
 DEPGEN=-MD
 -include ccan/*/*.d
 
 # 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)) >> $@
+
 # We compile all the ccan/foo/*.o files together into ccan/foo.o
 OBJFILES=$(DIRS:=.o)
 
-libccan.a: $(OBJFILES)
-	$(AR) r $@ $^
-
-# Dependencies are autogenerated in the .d files.
 # We create all the .o files and link them together.
 $(OBJFILES): %.o:
-	cd $* && $(CC) -I../.. $(CFLAGS) -c *.c && cd ../.. && $(LD) -r -o $@ `echo $*/*.c ' ' | sed 's/\.c /.o /g'`
+	$(LD) -r -o $@ $^
 
+libccan.a: $(OBJFILES)
+	$(AR) r $@ $(OBJFILES)