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diff --git a/src/boost/libs/log/example/basic_usage/main.cpp b/src/boost/libs/log/example/basic_usage/main.cpp
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+/*
+ *          Copyright Andrey Semashev 2007 - 2015.
+ * Distributed under the Boost Software License, Version 1.0.
+ *    (See accompanying file LICENSE_1_0.txt or copy at
+ *          http://www.boost.org/LICENSE_1_0.txt)
+ */
+/*!
+ * \file   main.cpp
+ * \author Andrey Semashev
+ * \date   11.11.2007
+ *
+ * \brief  An example of basic library usage. See the library tutorial for expanded
+ *         comments on this code. It may also be worthwhile reading the Wiki requirements page:
+ *         http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl?Boost.Logging
+ */
+
+// #define BOOST_LOG_USE_CHAR
+// #define BOOST_ALL_DYN_LINK 1
+// #define BOOST_LOG_DYN_LINK 1
+
+#include <iostream>
+
+#include <boost/log/common.hpp>
+#include <boost/log/expressions.hpp>
+
+#include <boost/log/utility/setup/file.hpp>
+#include <boost/log/utility/setup/console.hpp>
+#include <boost/log/utility/setup/common_attributes.hpp>
+
+#include <boost/log/attributes/timer.hpp>
+#include <boost/log/attributes/named_scope.hpp>
+
+#include <boost/log/sources/logger.hpp>
+
+#include <boost/log/support/date_time.hpp>
+
+namespace logging = boost::log;
+namespace sinks = boost::log::sinks;
+namespace attrs = boost::log::attributes;
+namespace src = boost::log::sources;
+namespace expr = boost::log::expressions;
+namespace keywords = boost::log::keywords;
+
+using boost::shared_ptr;
+
+// Here we define our application severity levels.
+enum severity_level
+{
+    normal,
+    notification,
+    warning,
+    error,
+    critical
+};
+
+// The formatting logic for the severity level
+template< typename CharT, typename TraitsT >
+inline std::basic_ostream< CharT, TraitsT >& operator<< (
+    std::basic_ostream< CharT, TraitsT >& strm, severity_level lvl)
+{
+    static const char* const str[] =
+    {
+        "normal",
+        "notification",
+        "warning",
+        "error",
+        "critical"
+    };
+    if (static_cast< std::size_t >(lvl) < (sizeof(str) / sizeof(*str)))
+        strm << str[lvl];
+    else
+        strm << static_cast< int >(lvl);
+    return strm;
+}
+
+int main(int argc, char* argv[])
+{
+    // This is a simple tutorial/example of Boost.Log usage
+
+    // The first thing we have to do to get using the library is
+    // to set up the logging sinks - i.e. where the logs will be written to.
+    logging::add_console_log(std::clog, keywords::format = "%TimeStamp%: %Message%");
+
+    // One can also use lambda expressions to setup filters and formatters
+    logging::add_file_log
+    (
+        "sample.log",
+        keywords::filter = expr::attr< severity_level >("Severity") >= warning,
+        keywords::format = expr::stream
+            << expr::format_date_time< boost::posix_time::ptime >("TimeStamp", "%Y-%m-%d, %H:%M:%S.%f")
+            << " [" << expr::format_date_time< attrs::timer::value_type >("Uptime", "%O:%M:%S")
+            << "] [" << expr::format_named_scope("Scope", keywords::format = "%n (%f:%l)")
+            << "] <" << expr::attr< severity_level >("Severity")
+            << "> " << expr::message
+/*
+        keywords::format = expr::format("%1% [%2%] [%3%] <%4%> %5%")
+            % expr::format_date_time< boost::posix_time::ptime >("TimeStamp", "%Y-%m-%d, %H:%M:%S.%f")
+            % expr::format_date_time< attrs::timer::value_type >("Uptime", "%O:%M:%S")
+            % expr::format_named_scope("Scope", keywords::format = "%n (%f:%l)")
+            % expr::attr< severity_level >("Severity")
+            % expr::message
+*/
+    );
+
+    // Also let's add some commonly used attributes, like timestamp and record counter.
+    logging::add_common_attributes();
+    logging::core::get()->add_thread_attribute("Scope", attrs::named_scope());
+
+    BOOST_LOG_FUNCTION();
+
+    // Now our logs will be written both to the console and to the file.
+    // Let's do a quick test and output something. We have to create a logger for this.
+    src::logger lg;
+
+    // And output...
+    BOOST_LOG(lg) << "Hello, World!";
+
+    // Now, let's try logging with severity
+    src::severity_logger< severity_level > slg;
+
+    // Let's pretend we also want to profile our code, so add a special timer attribute.
+    slg.add_attribute("Uptime", attrs::timer());
+
+    BOOST_LOG_SEV(slg, normal) << "A normal severity message, will not pass to the file";
+    BOOST_LOG_SEV(slg, warning) << "A warning severity message, will pass to the file";
+    BOOST_LOG_SEV(slg, error) << "An error severity message, will pass to the file";
+
+    return 0;
+}