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feature: Add fallback x86_64h-apple-darwin and fallback for it (#1228)

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Now `detect_targets` would fallback to `x86_64h-apple-darwin` on
`aarch64-apple-darwin`.

It also provides fallback to `x86_64h-apple-darwin` to
`x86_64-apple-darwin` and universal targets.

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>
This commit is contained in:
Jiahao XU 2023-07-23 14:28:59 +10:00 • committed by GitHub
parent 38d37c69b2
commit 1293314100
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 29 additions and 9 deletions
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38
crates/detect-targets/src/detect/macos.rs
View file

@ -4,6 +4,20 @@ use tokio::process::Command;
const AARCH64: &str = "aarch64-apple-darwin";
const X86: &str = "x86_64-apple-darwin";
/// https://doc.rust-lang.org/nightly/rustc/platform-support/x86_64h-apple-darwin.html
///
/// This target is an x86_64 target that only supports Apple's late-gen
/// (Haswell-compatible) Intel chips.
///
/// It enables a set of target features available on these chips (AVX2 and similar),
/// and MachO binaries built with this target may be used as the x86_64h entry in
/// universal binaries ("fat" MachO binaries), and will fail to load on machines
/// that do not support this.
///
/// It is similar to x86_64-apple-darwin in nearly all respects, although
/// the minimum supported OS version is slightly higher (it requires 10.8
/// rather than x86_64-apple-darwin's 10.7).
const X86H: &str = "x86_64h-apple-darwin";
const UNIVERSAL: &str = "universal-apple-darwin";
const UNIVERSAL2: &str = "universal2-apple-darwin";
@ -13,8 +27,7 @@ async fn is_x86_64_supported() -> io::Result<bool> {
.stdin(Stdio::null())
.stdout(Stdio::null())
.stderr(Stdio::null())
.spawn()?
.wait()
.status()
.await?;
Ok(exit_status.success())
@ -22,13 +35,20 @@ async fn is_x86_64_supported() -> io::Result<bool> {
pub(super) async fn detect_alternative_targets(target: &str) -> impl Iterator<Item = String> {
match target {
AARCH64 => [
is_x86_64_supported().await.unwrap_or(false).then_some(X86),
Some(UNIVERSAL),
Some(UNIVERSAL2),
],
X86 => [Some(UNIVERSAL), Some(UNIVERSAL2), None],
_ => [None, None, None],
AARCH64 => {
let is_x86_64_supported = is_x86_64_supported().await.unwrap_or(false);
[
// Prefer universal as it provides native arm executable
Some(UNIVERSAL),
Some(UNIVERSAL2),
// Prefer x86h since it is more optimized
is_x86_64_supported.then_some(X86H),
is_x86_64_supported.then_some(X86),
]
}
X86 => [Some(UNIVERSAL), Some(UNIVERSAL2), None, None],
X86H => [Some(X86), Some(UNIVERSAL), Some(UNIVERSAL2), None],
_ => [None, None, None, None],
}
.into_iter()
.flatten()