对“initscr"Ncurses 的未定义引用 [英] Undefined reference to `initscr' Ncurses

问题描述

我正在尝试编译我的项目并使用 lib ncurse.当编译器链接文件时，我遇到了一些错误.

I'm trying to compile my project and I use the lib ncurse. And I've got some errors when compiler links files.

这是我在 Makefile 中的标志行:

Here is my flags line in Makefile:

-W -Wall -Werror -Wextra -lncurses

我已经包含了 ncurses.h

I've included ncurses.h

一些布局:

prompt$> dpkg -S curses.h
libslang2-dev:amd64: /usr/include/slcurses.h
libncurses5-dev: /usr/include/ncurses.h
libncurses5-dev: /usr/include/curses.h

prompt$> dpkg -L libncurses5-dev | grep .so
/usr/lib/x86_64-linux-gnu/libncurses.so
/usr/lib/x86_64-linux-gnu/libcurses.so
/usr/lib/x86_64-linux-gnu/libmenu.so
/usr/lib/x86_64-linux-gnu/libform.so
/usr/lib/x86_64-linux-gnu/libpanel.s

这是我的错误:

gcc -W -Wall -Werror -Wextra -I./Includes/. -lncurses -o Sources/NCurses/ncurses_init.o -c Sources/NCurses/ncurses_init.c
./Sources/NCurses/ncurses_init.o: In function `ncruses_destroy':
ncurses_init.c:(.text+0x5): undefined reference to `endwin'
./Sources/NCurses/ncurses_init.o: In function `ncurses_write_line':
ncurses_init.c:(.text+0xc5): undefined reference to `mvwprintw'
./Sources/NCurses/ncurses_init.o: In function `ncurses_init':
ncurses_init.c:(.text+0xee): undefined reference to `initscr'
collect2: error: ld returned 1 exit status

非常感谢

推荐答案

您需要更改您的 makefile，以便 -lncurses 指令出现在您的目标代码之后gcc命令行，即需要生成命令:

You need to change your makefile so that the -lncurses directive comes after your object code on the gcc command line, i.e. it needs to generate the command:

gcc -W -Wall -Werror -Wextra -I./Includes/. -o Sources/NCurses/ncurses_init.o -c Sources/NCurses/ncurses_init.c -lncurses

这是因为目标文件和库在一次传递中按顺序链接.

This is because object files and libraries are linked in order in a single pass.

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