Mine

EXEC = stty
OBJS = stty.o error.o

CFLAGS += -I. -DHAVE_CONFIG_H=1

all: $(EXEC)

$(EXEC): $(OBJS)
        $(CC) $(LDFLAGS) -o $@ $(OBJS) $(LDLIBS)

romfs:
        $(ROMFSINST) /bin/$(EXEC)

clean:
        -rm -f $(EXEC) *.elf *.gdb *.o