LIB = $(obj)libdisk.a
-COBJS = part.o part_mac.o part_dos.o part_iso.o part_amiga.o
+COBJS-y += part.o
+COBJS-y += part_mac.o
+COBJS-y += part_dos.o
+COBJS-y += part_iso.o
+COBJS-y += part_amiga.o
+COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))