Linking C shared module relay.so
Undefined symbols for architecture x86_64:
  "_gnutls_handshake", referenced from:
      _relay_client_handshake_timer_cb in relay-client.o
  "_gnutls_error_is_fatal", referenced from:
      _relay_client_handshake_timer_cb in relay-client.o
  "_gnutls_strerror", referenced from:
      _relay_client_handshake_timer_cb in relay-client.o
      _relay_client_recv_cb in relay-client.o
      _relay_client_send in relay-client.o
      _relay_client_timer_cb in relay-client.o
  "_gnutls_record_recv", referenced from:
      _relay_client_recv_cb in relay-client.o
  "_gnutls_record_send", referenced from:
      _relay_client_send in relay-client.o
      _relay_client_timer_cb in relay-client.o
  "_gnutls_dh_params_init", referenced from:
      _relay_client_new in relay-client.o
  "_gnutls_sec_param_to_pk_bits", referenced from:
      _relay_client_new in relay-client.o
  "_gnutls_dh_params_generate2", referenced from:
      _relay_client_new in relay-client.o
  "_gnutls_certificate_set_dh_params", referenced from:
      _relay_client_new in relay-client.o
  "_gnutls_init", referenced from:
      _relay_client_new in relay-client.o
  "_gnutls_priority_set", referenced from:
      _relay_client_new in relay-client.o
  "_gnutls_credentials_set", referenced from:
      _relay_client_new in relay-client.o
  "_gnutls_certificate_server_set_request", referenced from:
      _relay_client_new in relay-client.o
  "_gnutls_transport_set_ptr", referenced from:
      _relay_client_new in relay-client.o
  "_gnutls_bye", referenced from:
      _relay_client_set_status in relay-client.o
  "_gnutls_deinit", referenced from:
      _relay_client_set_status in relay-client.o
  "_gnutls_certificate_free_credentials", referenced from:
      _relay_network_set_ssl_cert_key in relay-network.o
      _relay_network_end in relay-network.o
  "_gnutls_certificate_allocate_credentials", referenced from:
      _relay_network_set_ssl_cert_key in relay-network.o
      _relay_network_init in relay-network.o
  "_gnutls_certificate_set_x509_key_file", referenced from:
      _relay_network_set_ssl_cert_key in relay-network.o
  "_gnutls_priority_init", referenced from:
      _relay_network_init in relay-network.o
  "_gnutls_priority_deinit", referenced from:
      _relay_network_end in relay-network.o
  "_gnutls_dh_params_deinit", referenced from:
      _relay_network_end in relay-network.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
make[2]: *** [src/plugins/relay/relay.so] Error 1
make[1]: *** [src/plugins/relay/CMakeFiles/relay.dir/all] Error 2
make: *** [all] Error 2