make[4]: Entering directory `/work/uClinux-dist/lib/libc/gtermcap' make[4]: *** No rule to make target `(termcap.o', needed by `all'. Stop. 提示的錯誤   1 # Copyright (C) 1995,1996 Robert de Bath <[email protected]>  2 # This file is part of the Linux-8086 C library and is distributed  3 # under the GNU Library General Public License.  4   5 LIBC=../libc.a  6 OBJ=termcap.o tparam.o  7   8 all: $(LIBC) ($(OBJ))    這一句的 ($(OBJ)) 是什么意思？  9     #@$(RM) $(OBJ) 10  11 clean: 12     rm -f *.o libc.a 這是這個 makefile 文件 不清除 這個文件要做什么