--- /dev/null
+/*
+ *
+ * Copyright 2016-2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#if GRPC_ARES != 1
+
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+
+struct grpc_ares_request {
+ char val;
+};
+
+static grpc_ares_request* grpc_dns_lookup_ares_locked_impl(
+ const char* dns_server, const char* name, const char* default_port,
+ grpc_pollset_set* interested_parties, grpc_closure* on_done,
+ grpc_core::UniquePtr<grpc_core::ServerAddressList>* addrs,
+ bool check_grpclb, char** service_config_json, int query_timeout_ms,
+ grpc_combiner* combiner) {
+ return NULL;
+}
+
+grpc_ares_request* (*grpc_dns_lookup_ares_locked)(
+ const char* dns_server, const char* name, const char* default_port,
+ grpc_pollset_set* interested_parties, grpc_closure* on_done,
+ grpc_core::UniquePtr<grpc_core::ServerAddressList>* addrs,
+ bool check_grpclb, char** service_config_json, int query_timeout_ms,
+ grpc_combiner* combiner) = grpc_dns_lookup_ares_locked_impl;
+
+static void grpc_cancel_ares_request_locked_impl(grpc_ares_request* r) {}
+
+void (*grpc_cancel_ares_request_locked)(grpc_ares_request* r) =
+ grpc_cancel_ares_request_locked_impl;
+
+grpc_error* grpc_ares_init(void) { return GRPC_ERROR_NONE; }
+
+void grpc_ares_cleanup(void) {}
+
+static void grpc_resolve_address_ares_impl(const char* name,
+ const char* default_port,
+ grpc_pollset_set* interested_parties,
+ grpc_closure* on_done,
+ grpc_resolved_addresses** addrs) {}
+
+void (*grpc_resolve_address_ares)(
+ const char* name, const char* default_port,
+ grpc_pollset_set* interested_parties, grpc_closure* on_done,
+ grpc_resolved_addresses** addrs) = grpc_resolve_address_ares_impl;
+
+#endif /* GRPC_ARES != 1 */