C++: Error threads how to fix?

Question

C++ / C#

I got an error while compiling my file:

/tmp/ccaRoeTr.o: в функции «__static_initialization_and_destruction_0(int, int)»:
main.cpp:(.text+0x527): перемещение обрезано по месту: R_X86_64_32 у неопределённого символа «.bss»
main.cpp:(.text+0x536): перемещение обрезано по месту: R_X86_64_32 у неопределённого символа «.bss»
/usr/bin/ld: main.cpp:(.text+0x55b): неопределённая ссылка на «Client::Client()»
/usr/bin/ld: /tmp/ccaRoeTr.o: в функции «std::thread::thread<void (&)(char*), char (&) [2048], void>(void (&)(char*), char (&) [2048])»:
main.cpp:(.text._ZNSt6threadC2IRFvPcEJRA2048_cEvEEOT_DpOT0_[_ZNSt6threadC5IRFvPcEJRA2048_cEvEEOT_DpOT0_]+0x25): неопределённая ссылка на «pthread_create»
/usr/bin/ld: /tmp/ccaRoeTr.o: в функции «std::thread::thread<void (&)(char*, int), char (&) [2048], int&, void>(void (&)(char*, int), char (&) [2048], int&)»:
main.cpp:(.text._ZNSt6threadC2IRFvPciEJRA2048_cRiEvEEOT_DpOT0_[_ZNSt6threadC5IRFvPciEJRA2048_cRiEvEEOT_DpOT0_]+0x2b): неопределённая ссылка на «pthread_create»
collect2: ошибка: выполнение ld завершилось с кодом возврата 1

Please, help. I'm quite new to threading in c++.

My source code

#include <iostream>
#include <fstream>
#include <thread>
#include <cstdlib>
#include <cstdint>	

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/un.h>
#include <arpa/inet.h>
#include <unistd.h>

using namespace std;

class Client {
public:
  Client(string name_c , int socket ,int id):name(name_c) , id(id) , sock_c(socket){}
  Client();

  int sock_c;

  int get_id(){
    return id; 
  }
private:
  int id;
  string name;
};

int client_all = 1;
Client arr_all[numeric_limits<int>::max()];


enum chat_func {
  reg = '0',
  write_read = '1'
};

struct config_server {
  string ip;
  int port;
  int protocol_inet;
  int protocol;
  struct sockaddr_in addr;
};

void up_server(int &sock , int &listener , config_server &conf){
  listener = socket(conf.protocol_inet, conf.protocol, 0);

    conf.addr.sin_family = conf.protocol_inet;
    conf.addr.sin_port = htons(conf.port);
    conf.addr.sin_addr.s_addr = inet_addr(conf.ip.c_str());

    bind(listener, (struct sockaddr*)&conf.addr, sizeof(conf.addr));
   	listen(listener, 1);
}

void thread_func_rw(char *str_in_chat){ //primer zaprosa 1:andrei:12.57:LOL kek bubu gaga
  string str = str_in_chat; 
  str.erase(0 , 1);//andrei:12.57:LOL kek bubu gaga
  for(int i = 0; i < client_all; i++){
    send(arr_all[i].sock_c , str.c_str() , strlen(str.c_str()) , 0);
  }
  this_thread::yield();
}

void thread_func_reg(char *new_client_in_chat , int sock_client){ //primer zaprosa : 0:andrei
  string new_client = new_client_in_chat;
  new_client.erase(0 , 1);
  Client buf(new_client , sock_client , client_all + 1);
  arr_all[client_all - 1] = buf;
  send(sock_client , "100" , 3 , 0);

  this_thread::yield();
}

int main(int argc, char const *argv[]) {
  cout << "start config Server Poti" << endl;
  
  config_server conf_serv;
  conf_serv.ip = "127.0.0.1";conf_serv.port = 8080;conf_serv.protocol = SOCK_STREAM;conf_serv.protocol_inet = AF_INET;
  int sock , listener;
  char str_zapros[2048];
  up_server(sock , listener , conf_serv);

  cout << "Server up" << endl;

  thread thr_rw_in_chat(thread_func_rw , str_zapros);
  thread thr_reg(thread_func_reg , str_zapros , sock);

  while(true){
    sock = accept(listener, NULL, NULL);

    recv(sock , str_zapros , 2048 , 0);

    cout << "Server do new zapros" << endl;

    if (write_read == str_zapros[0]){
      thr_rw_in_chat.detach();
    }
    else if (reg == str_zapros[0]) {
      thr_reg.detach();
    }

    //close(sock);
  }
}

Answer 1

Client arr_all[numeric_limits<int>::max()];

That's strong, a static array with 2 billion indexes...

main.cpp:(.text+0x527): move truncated in place: R_X86_64_32 for undefined ".bss" character
main.cpp:(.text+0x536): move truncated in place: R_X86_64_32 for undefined ".bss" character

... and this is the consequences. In principle, building this can be overcome with the option -mcmodel=large, but there will be further problems at runtime and this is definitely not necessary.
Limit the size of this array to something reasonable, or make it dynamic.

Answer 2

Client();

Client() {}