From: Segher Boessenkool <segher@kernel•crashing.org>
To: Nathan Chancellor <nathan@kernel•org>
Cc: Catalin Marinas <catalin.marinas@arm•com>,
Will Deacon <will@kernel•org>,
Huacai Chen <chenhuacai@kernel•org>,
WANG Xuerui <kernel@xen0n•name>,
"James E.J. Bottomley" <James.Bottomley@hansenpartnership•com>,
Helge Deller <deller@gmx•de>,
Madhavan Srinivasan <maddy@linux•ibm.com>,
Michael Ellerman <mpe@ellerman•id.au>,
Nicholas Piggin <npiggin@gmail•com>,
Christophe Leroy <christophe.leroy@csgroup•eu>,
Heiko Carstens <hca@linux•ibm.com>,
Vasily Gorbik <gor@linux•ibm.com>,
Alexander Gordeev <agordeev@linux•ibm.com>,
Christian Borntraeger <borntraeger@linux•ibm.com>,
Sven Schnelle <svens@linux•ibm.com>,
Thomas Gleixner <tglx@linutronix•de>,
Ingo Molnar <mingo@redhat•com>, Borislav Petkov <bp@alien8•de>,
Dave Hansen <dave.hansen@linux•intel.com>,
x86@kernel•org, Ard Biesheuvel <ardb@kernel•org>,
Nick Desaulniers <nick.desaulniers+lkml@gmail•com>,
Bill Wendling <morbo@google•com>,
Justin Stitt <justinstitt@google•com>,
linux-arm-kernel@lists•infradead.org,
linux-kernel@vger•kernel.org, loongarch@lists•linux.dev,
linux-parisc@vger•kernel.org, linuxppc-dev@lists•ozlabs.org,
linux-s390@vger•kernel.org, linux-efi@vger•kernel.org,
llvm@lists•linux.dev, Christian Brauner <brauner@kernel•org>
Subject: Re: [PATCH] kbuild: Add '-fms-extensions' to areas with dedicated CFLAGS
Date: Wed, 5 Nov 2025 07:44:26 -0600 [thread overview]
Message-ID: <aQtUujos2ADVs-_O@gate> (raw)
In-Reply-To: <20251101-kbuild-ms-extensions-dedicated-cflags-v1-1-38004aba524b@kernel.org>
Hi!
On Sat, Nov 01, 2025 at 12:35:47PM -0400, Nathan Chancellor wrote:
> There are many places within the kernel that use their own CFLAGS
> instead of the main KBUILD_CFLAGS, meaning code written with the main
> kernel's use of '-fms-extensions' in mind that may be tangentially
> included in these areas will result in "error: declaration does not
> declare anything" messages from the compiler.
Please fix such non-standard code then, instead? The only (documented)
thing -fms-extensions does for C code is give meaning to something that
otherwise is a syntax error (and it is for a good reason!)
Segher
next prev parent reply other threads:[~2025-11-05 13:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-01 16:35 [PATCH] kbuild: Add '-fms-extensions' to areas with dedicated CFLAGS Nathan Chancellor
2025-11-01 16:55 ` Ard Biesheuvel
2025-11-05 12:56 ` Christian Brauner
2025-11-05 19:39 ` Nathan Chancellor
2025-11-06 17:47 ` Nathan Chancellor
2025-11-05 13:44 ` Segher Boessenkool [this message]
2025-11-05 20:15 ` Nathan Chancellor
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