-#if YAZ_USE_NEW_LOG
-
-#else
-
-#include <yaz/xmalloc.h>
-
-/* The old LOG_ bit names are here for compatibility only. They may
- * conflict with bits defined in syslog.h, or other places. 'LOG'
- * really is not such a good name. YLOG must be more unique
- */
-#define LOG_FATAL YLOG_FATAL
-#define LOG_DEBUG YLOG_DEBUG
-#define LOG_WARN YLOG_WARN
-#define LOG_LOG YLOG_LOG /* Deprecated, use the modern dynamic log levels*/
-#define LOG_ERRNO YLOG_ERRNO
-#define LOG_FILE 0x00000020 /* Deprecated - no YLOG_ equivalent */
-#define LOG_APP YLOG_APP /* Deprecated - no YLOG_ equivalent */
-#define LOG_MALLOC YLOG_MALLOC /* deprecated */
-#define LOG_NOTIME YLOG_NOTIME /* do not output date and time */
-#define LOG_APP2 YLOG_APP2 /* Deprecated - no YLOG_ equivalent */
-#define LOG_APP3 YLOG_APP3 /* Deprecated - no YLOG_ equivalent */
-#define LOG_FLUSH YLOG_FLUSH
-
-#define LOG_ALL YLOG_ALL
-
-#define LOG_DEFAULT_LEVEL YLOG_DEFAULT_LEVEL
-
-
-/* logf is deprecated, as it conflicts with a math function */
-#define logf yaz_log
-
-#endif /* if YAZ_USE_NEW_LOG */
+/** \brief Makes Libxml2 and Libxslt log errors through yaz_log
+ \param prefix prefix to use for log messages (may be 0)
+ \param log_level log level to use for Libxml2/Libxslt messages
+*/
+YAZ_EXPORT void yaz_log_xml_errors(const char *prefix, int log_level);