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From: Nathan Chancellor <nathan@kernel.org>
To: Asuna Yang <xinrui.riscv@isrc.iscas.ac.cn>
Cc: "Nicolas Schier" <nsc@kernel.org>,
	"Miguel Ojeda" <ojeda@kernel.org>,
	"Boqun Feng" <boqun.feng@gmail.com>,
	"Gary Guo" <gary@garyguo.net>,
	"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
	"Benno Lossin" <lossin@kernel.org>,
	"Andreas Hindborg" <a.hindborg@kernel.org>,
	"Alice Ryhl" <aliceryhl@google.com>,
	"Trevor Gross" <tmgross@umich.edu>,
	"Danilo Krummrich" <dakr@kernel.org>,
	"Nick Desaulniers" <nick.desaulniers+lkml@gmail.com>,
	"Bill Wendling" <morbo@google.com>,
	"Justin Stitt" <justinstitt@google.com>,
	"Paul Walmsley" <pjw@kernel.org>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	"Albert Ou" <aou@eecs.berkeley.edu>,
	"Alexandre Ghiti" <alex@ghiti.fr>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Conor Dooley" <conor@kernel.org>,
	"Mingcong Bai" <jeffbai@aosc.io>,
	"Han Gao" <rabenda.cn@gmail.com>,
	"Vivian Wang" <wangruikang@iscas.ac.cn>,
	"Jason Montleon" <jmontleo@redhat.com>,
	linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
	rust-for-linux@vger.kernel.org, llvm@lists.linux.dev,
	linux-riscv@lists.infradead.org, linux-doc@vger.kernel.org
Subject: Re: [PATCH v6 3/4] rust: add a Kconfig function to test for support of bindgen options
Date: Thu, 29 Jan 2026 15:41:18 -0700	[thread overview]
Message-ID: <20260129224118.GC844102@ax162> (raw)
In-Reply-To: <20251230-gcc-rust-v5-v6-3-2ac86ba728c8@isrc.iscas.ac.cn>

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@isrc.iscas.ac.cn>
> ---

Acked-by: Nathan Chancellor <nathan@kernel.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
> 

WARNING: multiple messages have this Message-ID (diff)
From: Nathan Chancellor <nathan@kernel.org>
To: Asuna Yang <xinrui.riscv@isrc.iscas.ac.cn>
Cc: "Nicolas Schier" <nsc@kernel.org>,
	"Miguel Ojeda" <ojeda@kernel.org>,
	"Boqun Feng" <boqun.feng@gmail.com>,
	"Gary Guo" <gary@garyguo.net>,
	"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
	"Benno Lossin" <lossin@kernel.org>,
	"Andreas Hindborg" <a.hindborg@kernel.org>,
	"Alice Ryhl" <aliceryhl@google.com>,
	"Trevor Gross" <tmgross@umich.edu>,
	"Danilo Krummrich" <dakr@kernel.org>,
	"Nick Desaulniers" <nick.desaulniers+lkml@gmail.com>,
	"Bill Wendling" <morbo@google.com>,
	"Justin Stitt" <justinstitt@google.com>,
	"Paul Walmsley" <pjw@kernel.org>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	"Albert Ou" <aou@eecs.berkeley.edu>,
	"Alexandre Ghiti" <alex@ghiti.fr>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Conor Dooley" <conor@kernel.org>,
	"Mingcong Bai" <jeffbai@aosc.io>,
	"Han Gao" <rabenda.cn@gmail.com>,
	"Vivian Wang" <wangruikang@iscas.ac.cn>,
	"Jason Montleon" <jmontleo@redhat.com>,
	linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
	rust-for-linux@vger.kernel.org, llvm@lists.linux.dev,
	linux-riscv@lists.infradead.org, linux-doc@vger.kernel.org
Subject: Re: [PATCH v6 3/4] rust: add a Kconfig function to test for support of bindgen options
Date: Thu, 29 Jan 2026 15:41:18 -0700	[thread overview]
Message-ID: <20260129224118.GC844102@ax162> (raw)
In-Reply-To: <20251230-gcc-rust-v5-v6-3-2ac86ba728c8@isrc.iscas.ac.cn>

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@isrc.iscas.ac.cn>
> ---

Acked-by: Nathan Chancellor <nathan@kernel.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
> 

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  reply	other threads:[~2026-01-29 22:41 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-30 16:47 [PATCH v6 0/4] RISC-V: re-enable gcc + rust builds Asuna Yang
2025-12-30 16:47 ` Asuna Yang
2025-12-30 16:47 ` [PATCH v6 1/4] rust: export BINDGEN_TARGET from a separate Makefile Asuna Yang
2025-12-30 16:47   ` Asuna Yang
2026-01-29 22:35   ` Nathan Chancellor
2026-01-29 22:35     ` Nathan Chancellor
2025-12-30 16:47 ` [PATCH v6 2/4] rust: generate a fatal error if BINDGEN_TARGET is undefined Asuna Yang
2025-12-30 16:47   ` Asuna Yang
2026-01-29 22:40   ` Nathan Chancellor
2026-01-29 22:40     ` Nathan Chancellor
2026-02-06 12:41     ` Asuna Yang
2026-02-06 12:41       ` Asuna Yang
2025-12-30 16:47 ` [PATCH v6 3/4] rust: add a Kconfig function to test for support of bindgen options Asuna Yang
2025-12-30 16:47   ` Asuna Yang
2026-01-29 22:41   ` Nathan Chancellor [this message]
2026-01-29 22:41     ` Nathan Chancellor
2025-12-30 16:47 ` [PATCH v6 4/4] RISC-V: handle extension configs for bindgen, re-enable gcc + rust builds Asuna Yang
2025-12-30 16:47   ` Asuna Yang
2026-01-29 13:49   ` Charalampos Mitrodimas
2026-01-29 13:49     ` Charalampos Mitrodimas
2026-01-29 23:25     ` Nathan Chancellor
2026-01-29 23:25       ` Nathan Chancellor
2026-02-06 12:13     ` Asuna Yang
2026-02-06 12:13       ` Asuna Yang
2026-02-06 12:24       ` Charalampos Mitrodimas
2026-02-06 12:24         ` Charalampos Mitrodimas
2025-12-30 16:58 ` [PATCH v6 0/4] RISC-V: " Asuna Yang
2025-12-30 16:58   ` Asuna Yang
2026-01-22  7:20 ` Asuna Yang
2026-01-22  7:20   ` Asuna Yang
2026-01-24  7:47   ` Paul Walmsley
2026-01-24  7:47     ` Paul Walmsley
2026-01-29  9:30     ` Conor Dooley
2026-01-29  9:30       ` Conor Dooley

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