--- a
+++ b/libupnpp/log.hxx
@@ -0,0 +1,57 @@
+/* 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.
+ */
+#ifndef _LOG_H_X_INCLUDED_
+#define _LOG_H_X_INCLUDED_
+
+namespace upnppdebug {
+    typedef enum loglevels {LLDEB, LLINF, LLERR, LLFAT, LLNON} loglevels;
+
+    extern int loglevel;
+}
+
+#define DEBOUT cerr
+
+#define LOGDEB(X) {                                                     \
+        if (upnppdebug::loglevel >= upnppdebug::LLDEB)                  \
+        {                                                               \
+            DEBOUT << __FILE__ << ":" << __LINE__<< "::"; DEBOUT << X;  \
+        }                                                               \
+    }
+
+#define LOGINF(X) {                                                     \
+        if (upnppdebug::loglevel >= upnppdebug::LLINF)                  \
+        {                                                               \
+            DEBOUT << __FILE__ << ":" << __LINE__<< "::"; DEBOUT << X;  \
+        }                                                               \
+    }                                                                   
+
+#define LOGERR(X) {                                                     \
+        if (upnppdebug::loglevel >= upnppdebug::LLERR)                  \
+        {                                                               \
+            DEBOUT << __FILE__ << ":" << __LINE__<< "::"; DEBOUT << X;  \
+        }                                                               \
+    }
+
+#define LOGFAT(X) {                                                     \
+        if (upnppdebug::loglevel >= upnppdebug::LLFAT)                  \
+        {                                                               \
+            DEBOUT << __FILE__ << ":" << __LINE__<< "::"; DEBOUT << X;  \
+        }                                                               \
+    }
+
+
+#endif /* _LOG_H_X_INCLUDED_ */