未定义参考`initscr的'的Ncurses [英] Undefined reference to `initscr' Ncurses

问题描述

我试图编译我的项目，我用lib ncurse。当编译链接文件，我已经得到了一些错误。

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

下面是我的标志。在Makefile行：

Here is my flags line in Makefile:

-W -Wall -Werror -Wextra -lncurses

我已经包括ncurses.h

I've included ncurses.h

由于布局：

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

这是我的错误回报：

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

您需要改变你的makefile，使 -lncurses 指令涉及的之后在gcc命令行上你的对象code，即它需要生成命令：

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，以便链接在一个单一的通行证。

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

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