Brochat error

Undefined symbols for architecture x86_64:
  "QXmppClient::addExtension(QXmppClientExtension*)", referenced from:
      QCyberGameChat::connectToXmpp() in qcybergamechat.o
      QReallTvChat::connect() in qrealltvchat.o
      QLivecodingChat::connect() in qlivecodingchat.o
  "QXmppClient::connectToServer(QXmppConfiguration const&, QXmppPresence const&)", referenced from:
      QCyberGameChat::connectToXmpp() in qcybergamechat.o
      QReallTvChat::connect() in qrealltvchat.o
      QLivecodingChat::connect() in qlivecodingchat.o
  "QXmppClient::disconnectFromServer()", referenced from:
      QCyberGameChat::disconnect() in qcybergamechat.o
      QReallTvChat::disconnect() in qrealltvchat.o
      QLivecodingChat::disconnect() in qlivecodingchat.o
  "QXmppClient::QXmppClient(QObject*)", referenced from:
      QCyberGameChat::connectToXmpp() in qcybergamechat.o
      QReallTvChat::connect() in qrealltvchat.o
      QLivecodingChat::connect() in qlivecodingchat.o
  "QXmppMucRoom::setNickName(QString const&)", referenced from:
      QCyberGameChat::onConnected() in qcybergamechat.o
      QReallTvChat::onConnected() in qrealltvchat.o
      QLivecodingChat::onConnected() in qlivecodingchat.o
  "QXmppMucRoom::join()", referenced from:
      QCyberGameChat::onConnected() in qcybergamechat.o
      QReallTvChat::onConnected() in qrealltvchat.o
      QLivecodingChat::onConnected() in qlivecodingchat.o
  "QXmppMucRoom::leave(QString const&)", referenced from:
      QCyberGameChat::disconnect() in qcybergamechat.o
      QReallTvChat::disconnect() in qrealltvchat.o
      QLivecodingChat::disconnect() in qlivecodingchat.o
  "QXmppPresence::QXmppPresence(QXmppPresence::Type)", referenced from:
      QCyberGameChat::connectToXmpp() in qcybergamechat.o
      QReallTvChat::connect() in qrealltvchat.o
      QLivecodingChat::connect() in qlivecodingchat.o
  "QXmppPresence::~QXmppPresence()", referenced from:
      QCyberGameChat::connectToXmpp() in qcybergamechat.o
      QReallTvChat::connect() in qrealltvchat.o
      QLivecodingChat::connect() in qlivecodingchat.o
  "QXmppMucManager::addRoom(QString const&)", referenced from:
      QCyberGameChat::onConnected() in qcybergamechat.o
      QReallTvChat::onConnected() in qrealltvchat.o
      QLivecodingChat::onConnected() in qlivecodingchat.o
  "QXmppMucManager::QXmppMucManager()", referenced from:
      QCyberGameChat::connectToXmpp() in qcybergamechat.o
      QReallTvChat::connect() in qrealltvchat.o
      QLivecodingChat::connect() in qlivecodingchat.o
  "QXmppConfiguration::setPassword(QString const&)", referenced from:
      QLivecodingChat::connect() in qlivecodingchat.o
  "QXmppConfiguration::setResource(QString const&)", referenced from:
      QLivecodingChat::connect() in qlivecodingchat.o
  "QXmppConfiguration::setIgnoreSslErrors(bool)", referenced from:
      QCyberGameChat::connectToXmpp() in qcybergamechat.o
      QReallTvChat::connect() in qrealltvchat.o
  "QXmppConfiguration::setSaslAuthMechanism(QString const&)", referenced from:
      QCyberGameChat::connectToXmpp() in qcybergamechat.o
      QReallTvChat::connect() in qrealltvchat.o
  "QXmppConfiguration::setJid(QString const&)", referenced from:
      QLivecodingChat::connect() in qlivecodingchat.o
  "QXmppConfiguration::setDomain(QString const&)", referenced from:
      QCyberGameChat::connectToXmpp() in qcybergamechat.o
      QReallTvChat::connect() in qrealltvchat.o
  "QXmppConfiguration::QXmppConfiguration()", referenced from:
      QCyberGameChat::connectToXmpp() in qcybergamechat.o
      QReallTvChat::connect() in qrealltvchat.o
      QLivecodingChat::connect() in qlivecodingchat.o
  "QXmppConfiguration::~QXmppConfiguration()", referenced from:
      QCyberGameChat::connectToXmpp() in qcybergamechat.o
      QReallTvChat::connect() in qrealltvchat.o
      QLivecodingChat::connect() in qlivecodingchat.o
  "QXmppStanza::from() const", referenced from:
      QCyberGameChat::onMessageReceived(QXmppMessage const&) in qcybergamechat.o
      QReallTvChat::onMessageReceived(QXmppMessage const&) in qrealltvchat.o
      QLivecodingChat::onMessageReceived(QXmppMessage const&) in qlivecodingchat.o
  "QXmppMessage::body() const", referenced from:
      QCyberGameChat::onMessageReceived(QXmppMessage const&) in qcybergamechat.o
      QReallTvChat::onMessageReceived(QXmppMessage const&) in qrealltvchat.o
      QLivecodingChat::onMessageReceived(QXmppMessage const&) in qlivecodingchat.o
  "QXmppMessage::stamp() const", referenced from:
      QCyberGameChat::onMessageReceived(QXmppMessage const&) in qcybergamechat.o
      QReallTvChat::onMessageReceived(QXmppMessage const&) in qrealltvchat.o
      QLivecodingChat::onMessageReceived(QXmppMessage const&) in qlivecodingchat.o
  "QXmppMucManager::rooms() const", referenced from:
      QCyberGameChat::disconnect() in qcybergamechat.o
      QReallTvChat::disconnect() in qrealltvchat.o
      QLivecodingChat::disconnect() in qlivecodingchat.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)