1 files changed, 2 insertions, 1 deletions

diff --git a/src/meta1-gram.y b/src/meta1-gram.y
index 0fb6727..1411361 100644
--- a/src/meta1-gram.y
+++ b/src/meta1-gram.y
@@ -18,25 +18,26 @@
 #ifdef HAVE_CONFIG_H
 # include <config.h>
 #endif
 #include <errno.h>
 #include <string.h>
 #include "grecs.h"
 #include "grecs-locus.h"
 
 int yylex(void);
 int yyerror(char *s);
         
 static struct grecs_node *parse_tree;
-extern int yy_flex_debug;       
+extern int yy_flex_debug;
+extern void yyset_in(FILE *);
 %}
 
 %error-verbose
 %locations
 
 %union {
         char *string;
         grecs_value_t svalue, *pvalue;
         struct grecs_list *list;
         struct { struct grecs_node *head, *tail; } node_list;
         struct grecs_node *node;
 }