From fe7bc27f2096feb7a927cd0e7aca81cd936a0b06 Mon Sep 17 00:00:00 2001
From: Marko Kreen <markokr@gmail.com>
Date: Fri, 11 Jan 2008 13:24:59 +0000
Subject: [PATCH] more gcc warnings

---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 19996fb..fcd1ca4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -56,7 +56,7 @@ if test x"$GCC" = xyes; then
   # Wextra does not turn those on?
   flags="$flags -Wmissing-prototypes -Wpointer-arith -Wendif-labels"
   flags="$flags -Wdeclaration-after-statement -Wold-style-definition"
-  flags="$flags -Wstrict-prototypes"
+  flags="$flags -Wstrict-prototypes -Wundef -Wformat -Wnonnull"
   for f in $flags; do
     CFLAGS="$good_CFLAGS $warnings $f"
     AC_COMPILE_IFELSE([void foo(void){}], [warnings="$warnings $f"])
-- 
2.40.0