使用 ncurses 时对“stdscr"的未定义引用-C/C++问题

Undefined reference to `stdscr#39; while using ncurses(使用 ncurses 时对“stdscr的未定义引用)

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问题描述

我正在尝试在 Ubuntu 11.10 中编译我的代码并遇到这些错误等等.到目前为止，通过谷歌搜索我认为这是一个链接错误.具体来说，有人建议确保您拥有正确的标题并链接 -lncurses 库.我已经这样做了.我仍然收到此错误.我还读到可能我应该安装 libncurses，但我已经安装了它.

I am trying to compile my code in Ubuntu 11.10 and getting these errors and more.So far by googling it I think it is a linking error. Specifically, there have been suggestions to make sure you have the right headers and link the -lncurses library. I have already done that. I'm still getting this error. I also read that may be i should install the libncurses, but I already have it installed.

My MakeFile:
CPP           = g++
CPPFLAGS      = -c -Wall -g
LINK          = g++
LDFLAGS_LINUX = -lpthread -lncurses
LDFLAGS       = $(LDFLAGS_LINUX)
RM            = rm


.SUFFIXES:
.SUFFIXES: .o .cpp

.cpp.o:
    $(CPP) $(CPPFLAGS) $*.cpp -o $(SRC_DIR)$*.o

all: skygrid

skygrid: skygrid.o commServer.o pose.o robot.o
    $(LINK) $(LDFLAGS) -o $@ $^

clean:
    $(RM) -rf *.o skygrid

skygrid.o:  skygrid.cpp definitions.h commServer.h pose.h robot.h
commServer.o:   commServer.cpp commServer.h
pose.o:     pose.cpp pose.h
robot.o:    robot.cpp robot.h pose.h

我的错误:

/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1094: undefined reference to `stdscr'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1094: undefined reference to `stdscr'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1094: undefined reference to `stdscr'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1094: undefined reference to `stdscr'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1104: undefined reference to `werase'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1106: undefined reference to `wprintw'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1107: undefined reference to `wprintw'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1109: undefined reference to `wprintw'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1111: undefined reference to `stdscr'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1111: undefined reference to `wgetch'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1116: undefined reference to `wtouchln'

推荐答案

我在 Centos 6.2 上的 ncurses 程序遇到了这个问题.事实证明，ncurses 有时会分为两个库，ncurses 和 tinfo.就我而言，stdscr 存在于 libtinfo 中，而不存在于 libncurses 中，因此在 -lncurses<之后将 -ltinfo 添加到链接行/code>，解决了这个问题.


I was having this problem with an ncurses program on Centos 6.2.  It turns out that ncurses is sometimes split into two libraries, ncurses and tinfo.  In my case, stdscr exists in libtinfo, not in libncurses, so adding -ltinfo to the link line, after -lncurses, solved the problem.

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