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Message-ID: <20250829195525.721664-1-ojeda@kernel.org>
Date: Fri, 29 Aug 2025 21:55:25 +0200
From: Miguel Ojeda <ojeda@...nel.org>
To: Miguel Ojeda <ojeda@...nel.org>,
Alex Gaynor <alex.gaynor@...il.com>
Cc: 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>,
rust-for-linux@...r.kernel.org,
linux-kernel@...r.kernel.org,
patches@...ts.linux.dev,
Waffle Maybe <waffle.lapkin@...il.com>
Subject: [PATCH] rust: support Rust >= 1.91.0 target spec
Starting with Rust 1.91.0 (expected 2025-10-30), the target spec format
has changed the type of the `target-pointer-width` key from string
to integer [1].
Thus conditionally use one or the other depending on the version.
Cc: Waffle Maybe <waffle.lapkin@...il.com>
Link: https://github.com/rust-lang/rust/pull/144443 [1]
Signed-off-by: Miguel Ojeda <ojeda@...nel.org>
---
Conditional to the PR getting merged.
scripts/generate_rust_target.rs | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/scripts/generate_rust_target.rs b/scripts/generate_rust_target.rs
index 39c82908ff3a..38b3416bb979 100644
--- a/scripts/generate_rust_target.rs
+++ b/scripts/generate_rust_target.rs
@@ -225,7 +225,11 @@ fn main() {
ts.push("features", features);
ts.push("llvm-target", "x86_64-linux-gnu");
ts.push("supported-sanitizers", ["kcfi", "kernel-address"]);
- ts.push("target-pointer-width", "64");
+ if cfg.rustc_version_atleast(1, 91, 0) {
+ ts.push("target-pointer-width", 64);
+ } else {
+ ts.push("target-pointer-width", "64");
+ }
} else if cfg.has("X86_32") {
// This only works on UML, as i386 otherwise needs regparm support in rustc
if !cfg.has("UML") {
@@ -245,7 +249,11 @@ fn main() {
}
ts.push("features", features);
ts.push("llvm-target", "i386-unknown-linux-gnu");
- ts.push("target-pointer-width", "32");
+ if cfg.rustc_version_atleast(1, 91, 0) {
+ ts.push("target-pointer-width", 32);
+ } else {
+ ts.push("target-pointer-width", "32");
+ }
} else if cfg.has("LOONGARCH") {
panic!("loongarch uses the builtin rustc loongarch64-unknown-none-softfloat target");
} else {
base-commit: 1b237f190eb3d36f52dffe07a40b5eb210280e00
--
2.51.0
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