Ott*_*ick 2 c++ gcc ncurses linker-errors
我第一次尝试在 ncurses 中进行试验,但是我在编译源代码时遇到了问题。据我所知,ncurses 已安装并位于正确的目录中。
我的 makefile 非常简单:
.cpp :
g++ -Wall -g -o $* $*.cpp -std=c++11 -lncurses
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这是我尝试时的输出 locate ncurses.h
$ locate ncurses.h
/usr/include/ncursesw/ncurses.h
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当我检查它是否已安装时
$ dpkg -l | grep ncurses
ii libncurses5:amd64 5.9+20140118-1ubuntu1 amd64 shared libraries for terminal handling
ii libncursesw5:amd64 5.9+20140118-1ubuntu1 amd64 shared libraries for terminal handling (wide character support)
ii libncursesw5-dev:amd64 5.9+20140118-1ubuntu1 amd64 developer's libraries for ncursesw
ii mtr-tiny 0.85-2 amd64 Full screen ncurses traceroute tool
ii ncurses-base 5.9+20140118-1ubuntu1 all basic terminal type definitions
ii ncurses-bin 5.9+20140118-1ubuntu1 amd64 terminal-related programs and man pages
ii ncurses-term 5.9+20140118-1ubuntu1 all additional terminal type definitions
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但是当我尝试制作时 g++ 告诉我这个
bankacct.cpp:18:29: fatal error: ncurses.h: No such file or directory
compilation terminated.
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不幸的是,我没有 root 访问权限,我需要能够在这台机器上进行编译。我有哪些选择?
我已经尝试<ncursesw/ncurses.h>根据其他用户的建议包括在内,但现在 g++ 给了我这个错误:
$ make bankacct
g++ -Wall -g -o bankacct bankacct.cpp -std=c++11 -lncurses
/usr/bin/ld: cannot find -lncurses
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如果我尝试删除-lncurses它会给我这个:
$ make bankacct
g++ -Wall -g -o bankacct bankacct.cpp -std=c++11
/tmp/cc8rPQfK.o: In function `main':
bankacct.cpp:23: undefined reference to `initscr'
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现在我尝试链接库。这是我所做的:
$ locate libncurse
/lib/x86_64-linux-gnu/libncurses.so.5
/lib/x86_64-linux-gnu/libncurses.so.5.9
/lib/x86_64-linux-gnu/libncursesw.so.5
/lib/x86_64-linux-gnu/libncursesw.so.5.9
/usr/lib/x86_64-linux-gnu/libncurses++w.a
/usr/lib/x86_64-linux-gnu/libncursesw.a
/usr/lib/x86_64-linux-gnu/libncursesw.so
/usr/share/doc/libncurses5
/usr/share/doc/libncursesw5
/usr/share/doc/libncursesw5-dev
/var/lib/dpkg/info/libncurses5:amd64.list
/var/lib/dpkg/info/libncurses5:amd64.md5sums
/var/lib/dpkg/info/libncurses5:amd64.postinst
/var/lib/dpkg/info/libncurses5:amd64.postrm
/var/lib/dpkg/info/libncurses5:amd64.shlibs
/var/lib/dpkg/info/libncurses5:amd64.symbols
/var/lib/dpkg/info/libncursesw5-dev:amd64.list
/var/lib/dpkg/info/libncursesw5-dev:amd64.md5sums
/var/lib/dpkg/info/libncursesw5-dev:amd64.postinst
/var/lib/dpkg/info/libncursesw5:amd64.list
/var/lib/dpkg/info/libncursesw5:amd64.md5sums
/var/lib/dpkg/info/libncursesw5:amd64.postinst
/var/lib/dpkg/info/libncursesw5:amd64.postrm
/var/lib/dpkg/info/libncursesw5:amd64.shlibs
/var/lib/dpkg/info/libncursesw5:amd64.symbols
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然后我尝试了我的 makefile 的两种变体:
g++ -Wall -g -L/usr/lib/x86_64-linux-gnu/ -o $* $*.cpp -std=c++11 -lncurses
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和
g++ -Wall -g -L/lib/x86_64-linux-gnu/ -o $* $*.cpp -std=c++11 -lncurses
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这仍然给了我错误undefined reference to 'initscr'(没有-lncurses)或/usr/bin/ld: cannot find -lncurses(有)
-lncurses
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告诉链接器查找名为“ncurses”的库。您清楚地表明这不是您的图书馆所称的:
/usr/lib/x86_64-linux-gnu/libncursesw.a
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你需要
-lncursesw
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你不需要修改源代码来指定<ncursesw/ncurses.h>你可以简单地添加
-I/usr/include/ncursesw
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