From 0d042007945d6fadb9b59ce8d01502575689067d Mon Sep 17 00:00:00 2001
From: Michal Kubecek <mkubecek@suse.cz>
Date: Sun, 23 Aug 2020 21:40:42 +0200
Subject: [PATCH 11/17] build: add -Wextra to default CFLAGS

As a result of previous commits, ethtool source now builds with gcc
versions 7-11 without any compiler warning with "-Wall -Wextra". Add
"-Wextra" to default cflags to make sure that any new warnings are
caught as early as possible.

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
(cherry picked from commit 257d90cd946699c0951b670576d2d63a12b92541)
---
 Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 2abb2742c335..099182e8d6ad 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,4 +1,4 @@
-AM_CFLAGS = -Wall
+AM_CFLAGS = -Wall -Wextra
 AM_CPPFLAGS = -I$(top_srcdir)/uapi
 LDADD = -lm
 
-- 
2.26.2