From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- vendor/crossbeam-utils/build.rs | 61 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 vendor/crossbeam-utils/build.rs (limited to 'vendor/crossbeam-utils/build.rs') diff --git a/vendor/crossbeam-utils/build.rs b/vendor/crossbeam-utils/build.rs new file mode 100644 index 000000000..a7557fd59 --- /dev/null +++ b/vendor/crossbeam-utils/build.rs @@ -0,0 +1,61 @@ +// The rustc-cfg listed below are considered public API, but it is *unstable* +// and outside of the normal semver guarantees: +// +// - `crossbeam_no_atomic_cas` +// Assume the target does *not* support atomic CAS operations. +// This is usually detected automatically by the build script, but you may +// need to enable it manually when building for custom targets or using +// non-cargo build systems that don't run the build script. +// +// - `crossbeam_no_atomic` +// Assume the target does *not* support any atomic operations. +// This is usually detected automatically by the build script, but you may +// need to enable it manually when building for custom targets or using +// non-cargo build systems that don't run the build script. +// +// - `crossbeam_no_atomic_64` +// Assume the target does *not* support AtomicU64/AtomicI64. +// This is usually detected automatically by the build script, but you may +// need to enable it manually when building for custom targets or using +// non-cargo build systems that don't run the build script. +// +// With the exceptions mentioned above, the rustc-cfg emitted by the build +// script are *not* public API. + +#![warn(rust_2018_idioms)] + +use std::env; + +include!("no_atomic.rs"); + +fn main() { + let target = match env::var("TARGET") { + Ok(target) => target, + Err(e) => { + println!( + "cargo:warning={}: unable to get TARGET environment variable: {}", + env!("CARGO_PKG_NAME"), + e + ); + return; + } + }; + + // Note that this is `no_*`, not `has_*`. This allows treating + // `cfg(target_has_atomic = "ptr")` as true when the build script doesn't + // run. This is needed for compatibility with non-cargo build systems that + // don't run the build script. + if NO_ATOMIC_CAS.contains(&&*target) { + println!("cargo:rustc-cfg=crossbeam_no_atomic_cas"); + } + if NO_ATOMIC.contains(&&*target) { + println!("cargo:rustc-cfg=crossbeam_no_atomic"); + println!("cargo:rustc-cfg=crossbeam_no_atomic_64"); + } else if NO_ATOMIC_64.contains(&&*target) { + println!("cargo:rustc-cfg=crossbeam_no_atomic_64"); + } else { + // Otherwise, assuming `"max-atomic-width" == 64` or `"max-atomic-width" == 128`. + } + + println!("cargo:rerun-if-changed=no_atomic.rs"); +} -- cgit v1.2.3