From 48badfdcd3168b7106f98f3b27bbbbc4033dc6e9 Mon Sep 17 00:00:00 2001
From: Eric Smith <spacewar@gmail.com>
Date: Thu, 28 Apr 2022 20:38:30 -0600
Subject: [PATCH] Fix forward declaration of yyin.

---
 semantics.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/semantics.c b/semantics.c
index ece0443..71a21cd 100644
--- a/semantics.c
+++ b/semantics.c
@@ -119,7 +119,7 @@ typedef struct output_page_t
 #endif
 
 
-FILE *yyin;
+extern FILE *yyin;  // forward declaration, will be defined by bison
 int line;  /* line number in spec file */
 
 int bookmark_level;