From 20dc74eafb4e55fe1dfbca5c41ba21c690d09ca4 Mon Sep 17 00:00:00 2001
From: "Reece H. Dunn" <msclrhd@gmail.com>
Date: Thu, 5 Oct 2017 07:39:58 +0100
Subject: [PATCH] Use the -Wunused flag instead of the separate flags.

---
 configure.ac | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/configure.ac b/configure.ac
index 5ec75351..11400b5b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -275,10 +275,8 @@ dnl
 dnl Reference: https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html
 dnl ================================================================
 
-AX_CHECK_COMPILE_FLAG([-Wunused-function],         [CFLAGS="-Wunused-function $CFLAGS"])
-AX_CHECK_COMPILE_FLAG([-Wunused-parameter],        [CFLAGS="-Wunused-parameter $CFLAGS"])
-AX_CHECK_COMPILE_FLAG([-Wunused-variable],         [CFLAGS="-Wunused-variable $CFLAGS"])
-AX_CHECK_COMPILE_FLAG([-Wunused-but-set-variable], [CFLAGS="-Wunused-but-set-variable $CFLAGS"])
+AX_CHECK_COMPILE_FLAG([-Wunused],           [CFLAGS="-Wunused $CFLAGS"])
+AX_CHECK_COMPILE_FLAG([-Wunused-parameter], [CFLAGS="-Wunused-parameter $CFLAGS"])
 
 dnl ================================================================
 dnl Generate output.