1 files changed, 4 insertions, 0 deletions
diff --git a/parser.l b/parser.l
index bdac7a6a..6ffc4db8 100644
--- a/parser.l
+++ b/parser.l
@@ -50,6 +50,10 @@
 #include "hash.h"
 #include "parser.h"
 
+#if HAVE_WINDOWS_H
+int fileno(FILE *stream);
+#endif
+
 #define YY_INPUT(buf, result, max_size)           \
   do {                                            \
     val c = get_byte(yyin_stream);                \