linux-kernel - [PATCH 3/4] kbuild: remove cc-option test of -fno-stack-check

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Message-Id: <20200910135120.3527468-3-masahiroy@kernel.org>
Date:   Thu, 10 Sep 2020 22:51:19 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     Ingo Molnar <mingo@...hat.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nathan Chancellor <natechancellor@...il.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        clang-built-linux@...glegroups.com, linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] kbuild: remove cc-option test of -fno-stack-check

The minimal compiler versions, GCC 4.9 and Clang 10 support this flag.

Here is the godbolt:
https://godbolt.org/z/59cK6o

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 1b6abecc5cab..5102c89d3167 100644
--- a/Makefile
+++ b/Makefile
@@ -934,7 +934,7 @@ KBUILD_CFLAGS	+= -fno-merge-all-constants
 KBUILD_CFLAGS	+= $(call cc-option,-fmerge-constants)
 
 # Make sure -fstack-check isn't enabled (like gentoo apparently did)
-KBUILD_CFLAGS  += $(call cc-option,-fno-stack-check,)
+KBUILD_CFLAGS  += -fno-stack-check
 
 # conserve stack if available
 KBUILD_CFLAGS   += $(call cc-option,-fconserve-stack)
-- 
2.25.1