如何安装并包括我的C编译器的库？

发布于 2025-02-01 08:31:45 字数 1598 浏览 4 评论 0 原文

我正在使用Debian 11，

我正在尝试重现Strlcpy。

  1 #include <stdio.h>
  2 #include <string.h>
  3 #include <stdlib.h>
  4 
  5 unsigned int ft_strlcpy(char *dest, char *src, unsigned int size)
  6 {
  7   unsigned int i;
  8 
  9   i = 0;
 10   while (src[i] && i < size)
 11   {
 12     dest[i] = src[i];
 13     i++;
 14   }
 15   dest[i] = '\0';
 16   while (src[i])
 17     i++;
 18   return (i);
 19 }
 20 
 21 int main()
 22 {
 23   unsigned int i;
 24   char *dest1 = malloc(sizeof(char) * 50);
 25   char *dest2 = malloc(sizeof(char) * 50);
 26 
 27   i = 0;
 28   while (i < 26)
 29   {
 30     printf("%d ", ft_strlcpy(dest1, "hello my name is marcel", i));
 31     printf("%s\n", dest1);
 32     printf("%ld ", strlcpy(dest2, "hello my name is marcel", i));
 33     printf("%s\n", dest2);
 34     i++;
 35   }
 36   free(dest1);
 37   free(dest2);
 38   return (0);
 39 }

但是，当我编译代码时，我会收到此消息：

ft_strlcpy.c: In function ‘main’:
ft_strlcpy.c:32:18: warning: implicit declaration of function ‘strlcpy’; did you mean ‘strncpy’? [-Wimplicit-function-declaration]
   32 |   printf("%ld ", strlcpy(dest2, "hello my name is marcel", i));
      |                  ^~~~~~~
      |                  strncpy
/usr/bin/ld: /tmp/ccukR8g6.o: in function `main':
ft_strlcpy.c:(.text+0xf0): undefined reference to `strlcpy'
collect2: error: ld returned 1 exit status
make: *** [<builtin>: ft_strlcpy] Error 1

我不知道如何包括libbsd或使用pkgconf。我已经尝试了几个小时，但是找不到解决方案。

如果有人可以将我重定向到手册或解释概念，那就太好了。

感谢您的帮助！

原文

I am using Debian 11

I am trying to reproduce strlcpy.

  1 #include <stdio.h>
  2 #include <string.h>
  3 #include <stdlib.h>
  4 
  5 unsigned int ft_strlcpy(char *dest, char *src, unsigned int size)
  6 {
  7   unsigned int i;
  8 
  9   i = 0;
 10   while (src[i] && i < size)
 11   {
 12     dest[i] = src[i];
 13     i++;
 14   }
 15   dest[i] = '\0';
 16   while (src[i])
 17     i++;
 18   return (i);
 19 }
 20 
 21 int main()
 22 {
 23   unsigned int i;
 24   char *dest1 = malloc(sizeof(char) * 50);
 25   char *dest2 = malloc(sizeof(char) * 50);
 26 
 27   i = 0;
 28   while (i < 26)
 29   {
 30     printf("%d ", ft_strlcpy(dest1, "hello my name is marcel", i));
 31     printf("%s\n", dest1);
 32     printf("%ld ", strlcpy(dest2, "hello my name is marcel", i));
 33     printf("%s\n", dest2);
 34     i++;
 35   }
 36   free(dest1);
 37   free(dest2);
 38   return (0);
 39 }

However, I get this message when I compile my code:

ft_strlcpy.c: In function ‘main’:
ft_strlcpy.c:32:18: warning: implicit declaration of function ‘strlcpy’; did you mean ‘strncpy’? [-Wimplicit-function-declaration]
   32 |   printf("%ld ", strlcpy(dest2, "hello my name is marcel", i));
      |                  ^~~~~~~
      |                  strncpy
/usr/bin/ld: /tmp/ccukR8g6.o: in function `main':
ft_strlcpy.c:(.text+0xf0): undefined reference to `strlcpy'
collect2: error: ld returned 1 exit status
make: *** [<builtin>: ft_strlcpy] Error 1

I have no idea how to include libbsd or use pkgconf.
I have tried for a couple of hours, but I couldn't find the solution.

If someone could redirect me to a manual or explain the concepts, that would be great.

Thank you for your help!

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爱人如己 2025-02-08 08:31:45

strlcpy 函数包含在 posix bsd操作系统。为了使其由编译器识别，您必须首先通过软件包管理器安装库，其名称将是 libbsd ， libbsd-dev 或 libbsd-devel 取决于您的发行版是否使用单独的开发库，而不是将其包含在＆lt; bsd/string.h＆gt; 。然后，您可以使用（假设使用GCC） gcc＆lt; your -filename＆gt; .c -lbsd ，指定库为链接。由于可移植性问题（POSIX不完整），我不建议在BSD特定软件之外使用BSD功能。