Add a preprocessor.

ivlpp/parse.y

@@ -0,0 +1,38 @@
+
+%{
+/*
+ * Copyright (c) 1999 Stephen Williams ([email protected])
+ *
+ *    This source code is free software; you can redistribute it
+ *    and/or modify it in source code form 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
+ */
+#if !defined(WINNT)
+#ident "$Id: parse.y,v 1.1 1999/07/03 17:24:11 steve Exp $"
+#endif
+
+static void yyerror(const char*msg);
+%}
+
+%%
+
+file :  ;
+
+
+%%
+
+void yyerror(const char*msg)
+{
+      fprintf(stderr, "ivlpp error: %s\n", msg);
+}