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diff --git a/extern/draco/draco/src/draco/core/status.h b/extern/draco/draco/src/draco/core/status.h
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+// Copyright 2017 The Draco 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.
+//
+#ifndef DRACO_CORE_STATUS_H_
+#define DRACO_CORE_STATUS_H_
+
+#include <string>
+
+namespace draco {
+
+// Class encapsulating a return status of an operation with an optional error
+// message. Intended to be used as a return type for functions instead of bool.
+class Status {
+ public:
+  enum Code {
+    OK = 0,
+    DRACO_ERROR = -1,          // Used for general errors.
+    IO_ERROR = -2,             // Error when handling input or output stream.
+    INVALID_PARAMETER = -3,    // Invalid parameter passed to a function.
+    UNSUPPORTED_VERSION = -4,  // Input not compatible with the current version.
+    UNKNOWN_VERSION = -5,      // Input was created with an unknown version of
+                               // the library.
+    UNSUPPORTED_FEATURE = -6,  // Input contains feature that is not supported.
+  };
+
+  Status() : code_(OK) {}
+  Status(const Status &status) = default;
+  Status(Status &&status) = default;
+  explicit Status(Code code) : code_(code) {}
+  Status(Code code, const std::string &error_msg)
+      : code_(code), error_msg_(error_msg) {}
+
+  Code code() const { return code_; }
+  const std::string &error_msg_string() const { return error_msg_; }
+  const char *error_msg() const { return error_msg_.c_str(); }
+
+  bool operator==(Code code) const { return code == code_; }
+  bool ok() const { return code_ == OK; }
+
+  Status &operator=(const Status &) = default;
+
+ private:
+  Code code_;
+  std::string error_msg_;
+};
+
+inline std::ostream &operator<<(std::ostream &os, const Status &status) {
+  os << status.error_msg_string();
+  return os;
+}
+
+inline Status OkStatus() { return Status(Status::OK); }
+
+// Evaluates an expression that returns draco::Status. If the status is not OK,
+// the macro returns the status object.
+#define DRACO_RETURN_IF_ERROR(expression)             \
+  {                                                   \
+    const draco::Status _local_status = (expression); \
+    if (!_local_status.ok()) {                        \
+      return _local_status;                           \
+    }                                                 \
+  }
+
+}  // namespace draco
+
+#endif  // DRACO_CORE_STATUS_H_