fix(esp_modem): linux port to work with lwip-2.1.2

components/esp_modem/src/esp_modem_api_target.cpp

@@ -0,0 +1,39 @@
+// Copyright 2021 Espressif Systems (Shanghai) PTE LTD
+//
+// 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 <cassert>
+#include "esp_log.h"
+#include "cxx_include/esp_modem_dte.hpp"
+#include "uart_terminal.hpp"
+#include "vfs_termial.hpp"
+#include "cxx_include/esp_modem_api.hpp"
+#include "cxx_include/esp_modem_dce_factory.hpp"
+#include "esp_modem_config.h"
+#include "exception_stub.hpp"
+
+namespace esp_modem {
+
+#ifdef CONFIG_COMPILER_CXX_EXCEPTIONS
+static const char *TAG = "modem_api_target";
+#endif
+
+std::shared_ptr<DTE> create_uart_dte(const dte_config *config)
+{
+    TRY_CATCH_RET_NULL(
+            auto term = create_uart_terminal(config);
+    return std::make_shared<DTE>(config, std::move(term));
+    )
+}
+
+} // namespace esp_modem