--- a
+++ b/libupnpp/log.cxx
@@ -0,0 +1,50 @@
+/* Copyright (C) 2014 J.F.Dockes
+ *	 This program is free software; you can redistribute it and/or modify
+ *	 it under the terms of the GNU General Public License as published by
+ *	 the Free Software Foundation; either version 2 of the License, or
+ *	 (at your option) any later version.
+ *
+ *	 This program is distributed in the hope that it will be useful,
+ *	 but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	 GNU General Public License for more details.
+ *
+ *	 You should have received a copy of the GNU General Public License
+ *	 along with this program; if not, write to the
+ *	 Free Software Foundation, Inc.,
+ *	 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+#include <errno.h>
+
+using namespace std;
+
+#include "log.hxx"
+
+namespace upnppdebug {
+
+Logger::Logger(const std::string& fn) 
+    : m_tocerr(false), m_loglevel(LLDEB)
+{
+    if (!fn.empty() && fn.compare("stderr")) {
+        m_stream.open(fn, std::fstream::out | std::ofstream::trunc);
+        if (!m_stream.is_open()) {
+            cerr << "Logger::Logger: log open failed: for [" <<
+                fn << "] errno " << errno << endl;
+            m_tocerr = true;
+        }
+    } else {
+        m_tocerr = true;
+    }
+}
+
+static Logger *theLog;
+
+Logger *Logger::getTheLog(const string& fn)
+{
+    if (theLog == 0)
+        theLog = new Logger(fn);
+    return theLog;
+}
+
+}
+