Undefined reference to 'explain_setsocket'

Question

socket() function used in my code returns -1. Inorder to know more about it example_socket() is added and add headerfile

#include<libexplain/socket.h>

While compiling -lexplain is also added. But i have below error

undefined reference to `explain_socket'

Code:

#include <libexplain/socket.h>
main(){
int sock;
if((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1){
              char message[5000];
        memset(message,0,5000);
                printf("\nSOCKET ERROR\n");
        printf("err: socket() failed");
        fprintf(stderr, "%s\n", explain_socket(AF_INET, SOCK_DGRAM, 0));
        exit(EXIT_FAILURE);
    }
}

Please help me to solve this problem.

[update from comment]

Compilation command:

cc xyz.c -lexplain -o xyz

Why not just `if ((sock = ...) == -1) { fprintf(stderr, "err: socket() failed: %s\n", strerror(errno)); exit(EXIT_FAILURE); }`? — melpomene, Aug 26 '17 at 06:58
Show the actual compilation command. The order of arguments to the compiler (like `gcc`) matters a lot. — Basile Starynkevitch, Aug 26 '17 at 07:05
@melpomene i got socket() error during long run so i will try your solution — student, Aug 26 '17 at 07:23
@BasileStarynkevitch compilation command :cc xyz.c -lexplain -o xyz — student, Aug 26 '17 at 07:28
That should go into your question. What compiler, operating system (and version) are you using? BTW, enable all warnings and debug info (e.g. `gcc -Wall -Wextra -g` if using [GCC](http://gcc.gnu.org/)....) — Basile Starynkevitch, Aug 26 '17 at 07:29

score 0 · Answer 1 · answered Aug 26 '17 at 08:49

0

Compilation command:
cc xyz.c -lexplain -o xyz 

You might like to specify libraries last on the command line:

cc xyz.c -o xyz -lexplain

answered Aug 26 '17 at 08:49

alk

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code is a part of a big program. Create a make file for compilation. – student Aug 26 '17 at 09:54

Undefined reference to 'explain_setsocket'

1 Answers1