获取错误未定义引用Linux上的“getaddrinfo”

时间:2011-09-21 01:02:29

标签: linux sockets gcc

当我尝试编译我的小C程序时,我收到错误消息: :未定义的引用`getaddrinfo'。我也包含了netdb.h和socket.h头文件。但错误在链接器中。

我在stackoverflow上看到了一个查询,但那是在Windows上。我在Linux机器上尝试它。 如何使编译成功?

谢谢!

以下是代码:

   #include <stdlib.h>
   #include <stdio.h>
   #include <sys/socket.h>
   #include <sys/types.h>
   #include <netdb.h>

   int main() {
   int status;
   struct addrinfo hints;
  struct addrinfo *servinfo; // will point to the results

  memset(&hints, 0, sizeof hints); // make sure the struct is empty 
  hints.ai_family = AF_UNSPEC;    // don't care IPv4 or IPv6
  hints.ai_socktype = SOCK_STREAM; // TCP stream sockets 
  hints.ai_flags = AI_PASSIVE;    // fill in my IP for me
  if ((status = getaddrinfo(NULL, "80", &hints, &servinfo)) != 0)
  {

     fprintf(stderr, "getaddrinfo error: \n");
      exit(1);
  }
  printf("\n %d %d %d %d %d %s",servinfo->ai_flags, servinfo->ai_family, servi    nfo->ai_socktype, servinfo->ai_protocol, servinfo->ai_addrlen, servinfo->ai_canonname);
  return 0;
 }

gcc test5.c /tmp/ccrFX43l.o(.text+0x4c):在函数main': : undefined reference to getaddrinfo'中 collect2:ld返回1退出状态

0 个答案:

没有答案