diff -up ./php_xdebug.h.old ./php_xdebug.h
--- ./php_xdebug.h.old	2016-06-10 12:09:53.021694392 +0200
+++ ./php_xdebug.h	2016-06-10 12:09:56.355710983 +0200
@@ -29,6 +29,10 @@
 
 #include "php.h"
 
+#ifndef LOG_NOTICE
+#define LOG_NOTICE 5
+#endif
+
 #include "xdebug_compat.h"
 #include "xdebug_handlers.h"
 #include "xdebug_hash.h"