code compiles with new structure

src/asyncio_utils.hpp

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+/**
+ * @brief MAVConn async serial utility class
+ * @file async_utils.hpp
+ * @author Vladimir Ermakov <vooon341@gmail.com>
+ */
+/*
+ * libmavconn
+ * Copyright 2013,2014,2015,2016 Vladimir Ermakov, All rights reserved.
+ *
+ * This file is part of the mavros package and subject to the license terms
+ * in the top-level LICENSE file of the mavros repository.
+ * https://github.com/mavlink/mavros/tree/master/LICENSE.md
+ */
+
+#ifndef ASYNCIO_UTILS_HPP
+#define ASYNCIO_UTILS_HPP
+
+#include <string>
+#include <algorithm>
+#include <iostream>
+
+namespace wescore
+{
+template <typename... Args>
+std::string format(const std::string &fmt, Args... args)
+{
+    // C++11 specify that string store elements continously
+    std::string ret;
+
+    auto sz = std::snprintf(nullptr, 0, fmt.c_str(), args...);
+    ret.reserve(sz + 1);
+    ret.resize(sz); // to be sure there have room for \0
+    std::snprintf(&ret.front(), ret.capacity() + 1, fmt.c_str(), args...);
+    return ret;
+}
+
+template <typename... Args>
+bool set_this_thread_name(const std::string &name, Args &&... args)
+{
+    auto new_name = format(name, std::forward<Args>(args)...);
+
+#ifdef __APPLE__
+    return pthread_setname_np(new_name.c_str()) == 0;
+#else
+    pthread_t pth = pthread_self();
+    return pthread_setname_np(pth, new_name.c_str()) == 0;
+#endif
+}
+
+/**
+ * Parse host:port pairs
+ */
+void url_parse_host(std::string host,
+                    std::string &host_out, int &port_out,
+                    const std::string def_host, const int def_port);
+
+/**
+ * Parse ?ids=sid,cid
+ */
+void url_parse_query(std::string query);
+} // namespace wescore
+
+#endif /* ASYNCIO_UTILS_HPP */