From 58ce63e1ff80cf0464d56c76818bef1b05407113 Mon Sep 17 00:00:00 2001
From: Ivan Maidanski <ivmai@mail.ru>
Date: Tue, 22 Nov 2016 04:48:41 +0300
Subject: [PATCH] Fix GCC -Wpedantic checking in configure (fix commit 96a8fd9)

* configure.ac [GCC] (ac_cv_cc_pedantic): Compile code that contains
"extern int quiet" (since the translation unit cannot be empty).
---
 configure.ac | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 055167a..796dccd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -57,7 +57,9 @@ if test "$GCC" = yes; then
   AS_IF([test "$ac_cv_cc_wextra" = yes], [WEXTRA="-Wextra"], [WEXTRA="-W"])
   AC_MSG_CHECKING(for gcc -Wpedantic)
   CFLAGS="-Wpedantic -Wno-long-long $CFLAGS"
-  AC_TRY_COMPILE([],[], [ac_cv_cc_pedantic=yes], [ac_cv_cc_pedantic=no])
+  AC_TRY_COMPILE([],[
+extern int quiet;
+  ], [ac_cv_cc_pedantic=yes], [ac_cv_cc_pedantic=no])
   CFLAGS="$old_CFLAGS"
   AC_MSG_RESULT($ac_cv_cc_pedantic)
   WPEDANTIC=
-- 
2.7.4