undefined reference to `socketpair' - c++

Question

I have written socket client code run fine with Linux GCC but through error on QNX platform. It through error as undefined reference to `socketpair'
compile command: aarch64-unknown-nto-qnx7.0.0-gcc ss1.c
Buid error
/tmp/cc8ssnim.o: In function `main':
ss1.c:(.text+0x34): undefined reference to `socketpair'
collect2: error: ld returned 1 exit status
Edited After john comment
Comiple time error fixed by adding -lsocket i get run time error as
setsockopt: Protocol not available
Example code taken from HERE
// Server side C/C++ program to demonstrate Socket programming
#include <unistd.h>
#include <stdio.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <string.h>
#include<iostream>
#include <sys/types.h>
#define PORT 8080
int main(int argc, char const *argv[])
{
int server_fd, new_socket, valread;
struct sockaddr_in address;
int opt = 1;
int addrlen = sizeof(address);
char buffer[1024] = {0};
char hello[500] = {};
// Creating socket file descriptor
if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0)
{
perror("socket failed");
exit(EXIT_FAILURE);
}
// Forcefully attaching socket to the port 8080
if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT,
&opt, sizeof(opt)))
{
perror("setsockopt");
exit(EXIT_FAILURE);
}
address.sin_family = AF_INET;
address.sin_addr.s_addr = INADDR_ANY;
address.sin_port = htons( PORT );
// Forcefully attaching socket to the port 8080
if (bind(server_fd, (struct sockaddr *)&address,
sizeof(address))<0)
{
perror("bind failed");
exit(EXIT_FAILURE);
}
if (listen(server_fd, 3) < 0)
{
perror("listen");
exit(EXIT_FAILURE);
}
if ((new_socket = accept(server_fd, (struct sockaddr *)&address,
(socklen_t*)&addrlen))<0)
{
perror("accept");
exit(EXIT_FAILURE);
}
ab:
std::cout<<"Enter send to client\n";
std::cin>>hello;
valread = read( new_socket , buffer, 1024);
printf("Received in server = %s\n",buffer );
memset( buffer, '\0', sizeof(char)*1024 );
send(new_socket , hello , strlen(hello) , 0 );
memset( hello, '\0', sizeof(char)*500 );
goto ab;
//printf("Hello message sent\n");
return 0;
}