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troubleshooting Question

How to compile a socket programming file.

Avatar of chuehw
chuehw asked on
Linux OS Dev
6 Comments1 Solution398 ViewsLast Modified:
Hi
I wanted to compile a very simple program, in which main() calls one socket( ) api to create a socket. But gcc gave me a compile error that socket is not defined.
Here is what I did to compile the test.c
gcc -o test test.c -ldl -lpthread
Undefined                                       first referenced
 symbol                                               in file
socket                                                 /var/tmp//ccOLjlv5.o
ld: fatal: Symbol referencing errors. No output written to test.
collect2: ld returned 1 exit status.

Thanks. I am new to socket programming and want to learn how to create server/client. But this compile error really block me from going forward.

Here is test.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <pthread.h>
#include <ctype.h>
#include <dirent.h>
#include <netinet/in.h>

main()
{
      int s;
      if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
            perror("client: socket");
            exit(1);
      }
      return;
}


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Avatar of Karl Heinz Kremer
Karl Heinz KremerFlag of United States of America image

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