这个问题已经在这里有一个答案:
- 反编译库时,“未定义参考”错误 2个回答
我有一个问题,尝试运行GNU的Readline库示例代码中提供维基百科 。 这里有云:
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <readline/readline.h>
#include <readline/history.h>
int main()
{
char* input, shell_prompt[100];
// Configure readline to auto-complete paths when the tab key is hit.
rl_bind_key('\t', rl_complete);
for(;;) {
// Create prompt string from user name and current working directory.
snprintf(shell_prompt, sizeof(shell_prompt), "%s:%s $ ", getenv("USER"), getcwd(NULL, 1024));
// Display prompt and read input (n.b. input must be freed after use)...
input = readline(shell_prompt);
// Check for EOF.
if (!input)
break;
// Add input to history.
add_history(input);
// Do stuff...
// Free input.
free(input);
}
}
我工作的一个受限制的环境中的readline是不可用的,所以我不得不下载源代码,编译并安装到我的主目录。
这里面我的家目录结构:
.local
├── include
│ └── readline
│ ├── chardefs.h
│ ├── history.h
│ ├── keymaps.h
│ ├── readline.h
│ ├── rlconf.h
│ ├── rlstdc.h
│ ├── rltypedefs.h
│ └── tilde.h
└── lib
├── libhistory.a
├── libhistory.so -> libhistory.so.6
├── libhistory.so.6 -> libhistory.so.6.2
├── libhistory.so.6.2
├── libreadline.a
├── libreadline.so -> libreadline.so.6
├── libreadline.so.6 -> libreadline.so.6.2
└── libreadline.so.6.2
问题是,当我叫GCC它将引发我一个错误:
$ gcc hello.c -o hello_c.o -I /home/my-home-dir/.local/include
/tmp/cckC236E.o: In function `main':
hello.c:(.text+0xa): undefined reference to `rl_complete'
hello.c:(.text+0x14): undefined reference to `rl_bind_key'
hello.c:(.text+0x60): undefined reference to `readline'
hello.c:(.text+0x77): undefined reference to `add_history'
collect2: error: ld returned 1 exit status
有关于这个答案在这里 ,但我不使用NetBeans,我不太清楚如何指定要在命令行上库的路径。
我想告诉在库链接,但结果还是一样:
$ gcc hello.c -o hello_c.o -I /home/my-home-dir/.local/include -Xlinker "-L /home/my-home-dir/.local/lib"
/tmp/cceiePMr.o: In function `main':
hello.c:(.text+0xa): undefined reference to `rl_complete'
hello.c:(.text+0x14): undefined reference to `rl_bind_key'
hello.c:(.text+0x60): undefined reference to `readline'
hello.c:(.text+0x77): undefined reference to `add_history'
collect2: error: ld returned 1 exit status
任何想法我可能会丢失吗?