cleanup: specify never-interactive option for flex scanner

We never parse configuration interactively.  That's just as well,
because without "%option never-interactive" flex generates a redundant
declaration of isatty which upsets -Wredundant-decls.

This is a bug in flex IMO but the workaround is fine for secnet.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/conffile.fl b/conffile.fl
index c169b57..1747be2 100644 (file)
--- a/conffile.fl
+++ b/conffile.fl
@@ -3,6 +3,7 @@
 
 %option nounput
 %option noinput
+%option never-interactive
 
 %{
 #include <stdio.h>