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Sun, 23 Nov 2025 16:23:24 -0800 (PST) From: Asuna Yang X-Google-Original-From: Asuna Yang Date: Mon, 24 Nov 2025 01:23:21 +0100 Subject: [PATCH v4 1/4] rust: export BINDGEN_TARGET from a separate Makefile Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251124-gcc-rust-v4-v4-1-4e06e07421ae@gmail.com> References: <20251124-gcc-rust-v4-v4-0-4e06e07421ae@gmail.com> In-Reply-To: <20251124-gcc-rust-v4-v4-0-4e06e07421ae@gmail.com> To: Nathan Chancellor , Nicolas Schier , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , Nick Desaulniers , Bill Wendling , Justin Stitt , Nicolas Schier , Jonathan Corbet , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Vivian Wang , Han Gao , Jason Montleon , Conor Dooley Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, llvm@lists.linux.dev, linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, Asuna Yang X-Mailer: b4 0.14.3 A subsequent commit will add a new function `rust-bindgen-option` to `scripts/Kconfig.include`. The bindgen backend requires the `--target` option for cross compiling, but variable `BINDGEN_TARGET` in `rust/Makefile` cannot be exported to `scripts/Kconfig.include`. Signed-off-by: Asuna Yang --- Makefile | 2 ++ rust/Makefile | 8 -------- scripts/Makefile.rust | 9 +++++++++ 3 files changed, 11 insertions(+), 8 deletions(-) diff --git a/Makefile b/Makefile index fb4389aa5d5f..e4fcae38cc13 100644 --- a/Makefile +++ b/Makefile @@ -718,6 +718,8 @@ ifneq ($(findstring clang,$(CC_VERSION_TEXT)),) include $(srctree)/scripts/Makefile.clang endif +include $(srctree)/scripts/Makefile.rust + # Include this also for config targets because some architectures need # cc-cross-prefix to determine CROSS_COMPILE. ifdef need-compiler diff --git a/rust/Makefile b/rust/Makefile index 7842ad0a4ea7..ae7cbbd89da3 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -300,14 +300,6 @@ bindgen_skip_c_flags := -mno-fp-ret-in-387 -mpreferred-stack-boundary=% \ -fzero-init-padding-bits=% -mno-fdpic \ --param=% --param asan-% -fno-isolate-erroneous-paths-dereference -# Derived from `scripts/Makefile.clang`. -BINDGEN_TARGET_x86 := x86_64-linux-gnu -BINDGEN_TARGET_arm64 := aarch64-linux-gnu -BINDGEN_TARGET_arm := arm-linux-gnueabi -BINDGEN_TARGET_loongarch := loongarch64-linux-gnusf -BINDGEN_TARGET_um := $(BINDGEN_TARGET_$(SUBARCH)) -BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH)) - # All warnings are inhibited since GCC builds are very experimental, # many GCC warnings are not supported by Clang, they may only appear in # some configurations, with new GCC versions, etc. diff --git a/scripts/Makefile.rust b/scripts/Makefile.rust new file mode 100644 index 000000000000..5c12b4b8c8b6 --- /dev/null +++ b/scripts/Makefile.rust @@ -0,0 +1,9 @@ +# Derived from `scripts/Makefile.clang`. +BINDGEN_TARGET_x86 := x86_64-linux-gnu +BINDGEN_TARGET_arm64 := aarch64-linux-gnu +BINDGEN_TARGET_arm := arm-linux-gnueabi +BINDGEN_TARGET_loongarch := loongarch64-linux-gnusf +BINDGEN_TARGET_um := $(BINDGEN_TARGET_$(SUBARCH)) +BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH)) + +export BINDGEN_TARGET -- 2.51.1