linux-kernel - [PATCH v6 0/4] RISC-V: re-enable gcc + rust builds

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Message-Id: <20251230-gcc-rust-v5-v6-0-2ac86ba728c8@isrc.iscas.ac.cn>
Date: Tue, 30 Dec 2025 17:47:53 +0100
From: Asuna Yang <xinrui.riscv@...c.iscas.ac.cn>
To: Nathan Chancellor <nathan@...nel.org>, 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>
Cc: 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, 
 Asuna Yang <xinrui.riscv@...c.iscas.ac.cn>
Subject: [PATCH v6 0/4] RISC-V: re-enable gcc + rust builds

Previous v5 patch:
https://lore.kernel.org/20251204-gcc-rust-v5-v5-0-2d4f20d86c24@gmail.com

Changes in v6:
- Simplified `bindgen-backend-option` Kconfig function by using
`/dev/null` with clang option `-x c` instead of `touch`ing a new temp
file.
- Moved the `BINDGEN_TARGET` check to `rust/Makefile` so it only
performs the check when Rust is enabled, avoiding breaking targets that
do not support Rust builds.
- Updated my git email to the institutional email address.

Signed-off-by: Asuna Yang <xinrui.riscv@...c.iscas.ac.cn>
---
Asuna Yang (4):
      rust: export BINDGEN_TARGET from a separate Makefile
      rust: generate a fatal error if BINDGEN_TARGET is undefined
      rust: add a Kconfig function to test for support of bindgen options
      RISC-V: handle extension configs for bindgen, re-enable gcc + rust builds

 Documentation/rust/arch-support.rst |  2 +-
 Makefile                            |  3 ++-
 arch/riscv/Kconfig                  | 35 ++++++++++++++++++++++++++++++++++-
 rust/Makefile                       | 17 ++++++++---------
 scripts/Kconfig.include             |  5 +++++
 scripts/Makefile.rust               | 10 ++++++++++
 6 files changed, 60 insertions(+), 12 deletions(-)
---
base-commit: 8640b74557fc8b4c300030f6ccb8cd078f665ec8
change-id: 20251204-gcc-rust-v5-aafcede31ea3

Best regards,
-- 
Asuna Yang <xinrui.riscv@...c.iscas.ac.cn>