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rust: support Rust >= 1.91.0 target spec

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commit 8851e27d2c upstream.

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@gmail.com>
Link: https://github.com/rust-lang/rust/pull/144443 [1]
Link: https://lore.kernel.org/r/20250829195525.721664-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Miguel Ojeda 2025-08-29 21:55:25 +02:00 committed by Greg Kroah-Hartman
parent 585a593ad5
commit 17cab7b45f
1 changed files with 10 additions and 2 deletions
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12
scripts/generate_rust_target.rs
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@ -223,7 +223,11 @@ 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") {
@ -243,7 +247,11 @@ 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 {