linux-kernel - Re: [PATCH v6 3/4] rust: add a Kconfig function to test for support of bindgen options

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20260129224118.GC844102@ax162>
Date: Thu, 29 Jan 2026 15:41:18 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: Asuna Yang <xinrui.riscv@...c.iscas.ac.cn>
Cc: Nicolas Schier <nsc@...nel.org>, Miguel Ojeda <ojeda@...nel.org>,
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <lossin@...nel.org>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
	Danilo Krummrich <dakr@...nel.org>,
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Paul Walmsley <pjw@...nel.org>, Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>,
	Jonathan Corbet <corbet@....net>, Conor Dooley <conor@...nel.org>,
	Mingcong Bai <jeffbai@...c.io>, Han Gao <rabenda.cn@...il.com>,
	Vivian Wang <wangruikang@...as.ac.cn>,
	Jason Montleon <jmontleo@...hat.com>, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org, rust-for-linux@...r.kernel.org,
	llvm@...ts.linux.dev, linux-riscv@...ts.infradead.org,
	linux-doc@...r.kernel.org
Subject: Re: [PATCH v6 3/4] rust: add a Kconfig function to test for support
 of bindgen options

On Tue, Dec 30, 2025 at 05:47:56PM +0100, Asuna Yang wrote:
> Add a new `bindgen-backend-option` Kconfig function to test whether the
> bindgen backend supports a given flag.
> 
> A subsequent commit will use this function to test for RISC-V extension
> flags.
> 
> Signed-off-by: Asuna Yang <xinrui.riscv@...c.iscas.ac.cn>
> ---

Acked-by: Nathan Chancellor <nathan@...nel.org>

>  scripts/Kconfig.include | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
> index d42042b6c9e2..9954b8093fab 100644
> --- a/scripts/Kconfig.include
> +++ b/scripts/Kconfig.include
> @@ -78,3 +78,8 @@ rustc-llvm-version := $(shell,$(srctree)/scripts/rustc-llvm-version.sh $(RUSTC))
>  # If you are testing for unstable features, consider testing RUSTC_VERSION
>  # instead, as features may have different completeness while available.
>  rustc-option = $(success,trap "rm -rf .tmp_$$" EXIT; mkdir .tmp_$$; $(RUSTC) $(1) --crate-type=rlib /dev/null --out-dir=.tmp_$$ -o .tmp_$$/tmp.rlib)
> +
> +# $(bindgen-backend-option,<flag>)
> +# Return y if bindgen backend supports <flag>, n otherwise
> +# For now, the backend refers only to libclang, so more specifically, this function tests whether the given flag is recognized by the libclang used by bindgen.
> +bindgen-backend-option = $(success,$(BINDGEN) /dev/null -- -x c --target=$(BINDGEN_TARGET) $(1))
> 
> -- 
> 2.51.1
>