--- cbf/Makefile	2009-08-31 09:35:06.000000000 +0200
+++ cbf/Makefile.new	2009-08-31 10:44:46.000000000 +0200
@@ -362,6 +362,8 @@
              $(EXAMPLES)/img.h               \
              $(INCLUDE)/md5.h
 
+OBJ = $(subst .c,.o,$(SOURCE))
+
 #
 # Compile the library and examples
 #
@@ -379,11 +381,14 @@
 $(LIB):
 	mkdir $(LIB)
 
+
+.c.o: $(SOURCE) $(HEADERS)
+	$(CC) $(CFLAGS) $(INCLUDES) $(WARNINGS) -c $<
+
 #
 # CBF library
 #
-$(LIB)/libcbf.a: $(SOURCE) $(HEADERS) $(COMMONDEP)
-	$(CC) $(CFLAGS) $(INCLUDES) $(WARNINGS) -c $(SOURCE)
+$(LIB)/libcbf.a: $(OBJ) $(COMMONDEP)
 	$(AR) cr $@ *.o
 	rm *.o
 	if [ -f $(RANLIB) ]; then $(RANLIB) $@ ; fi