--- /dev/null
+diff -urN cflowd-2-1-b1.org/classes/src/config.lex cflowd-2-1-b1/classes/src/config.lex
+--- cflowd-2-1-b1.org/classes/src/config.lex 2003-09-11 23:04:06.000000000 +0200
++++ cflowd-2-1-b1/classes/src/config.lex 2003-09-11 23:04:37.000000000 +0200
+@@ -48,6 +48,8 @@
+ msg);
+ return;
+ }
++
++ extern int yywrap ( void );
+ %}
+
+ matched_OPTIONS ^[ \t]*OPTIONS[\t ]*[{][\t ]*