--- bison-1.875/src/getargs.c.bak	2004-04-20 19:17:44.467890864 +0200
+++ bison-1.875/src/getargs.c	2004-04-20 19:18:29.480047976 +0200
@@ -333,6 +333,9 @@
 {
   int c;
 
+  if(strcmp(argv[0], "yacc") == 0)
+    yacc_flag = 1;
+
   while ((c = getopt_long (argc, argv, short_options, long_options, NULL))
 	 != -1)
     switch (c)