linux-kernel - [PATCH 1/6] Kbuild: compile kernel with gnu11 std

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Message-Id: <20220301075839.4156-2-xiam0nd.tong@gmail.com>
Date:   Tue,  1 Mar 2022 15:58:34 +0800
From:   Xiaomeng Tong <xiam0nd.tong@...il.com>
To:     torvalds@...ux-foundation.org
Cc:     arnd@...db.de, jakobkoschel@...il.com,
        linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
        keescook@...omium.org, jannh@...gle.com,
        linux-kbuild@...r.kernel.org, linux-mm@...ck.org,
        netdev@...r.kernel.org, Xiaomeng Tong <xiam0nd.tong@...il.com>
Subject: [PATCH 1/6] Kbuild: compile kernel with gnu11 std

This patch is suggested by linus[1], there may be some corner cases which
should be considered before merge, and is just for prove PATCH 2.

[1]: https://lore.kernel.org/all/CAHk-=wh97QY9fEQUK6zMVQwaQ_JWDvR=R+TxQ_0OYrMHQ+egvQ@mail.gmail.com/

Signed-off-by: Xiaomeng Tong <xiam0nd.tong@...il.com>
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 289ce2be8..84a96ae3c 100644
--- a/Makefile
+++ b/Makefile
@@ -515,7 +515,7 @@ KBUILD_CFLAGS   := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
 		   -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \
 		   -Werror=implicit-function-declaration -Werror=implicit-int \
 		   -Werror=return-type -Wno-format-security \
-		   -std=gnu89
+		   -std=gnu11 -Wno-shift-negative-value
 KBUILD_CPPFLAGS := -D__KERNEL__
 KBUILD_AFLAGS_KERNEL :=
 KBUILD_CFLAGS_KERNEL :=
-- 
2.17.1