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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /third_party/rust/crossbeam-utils/build.rs | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | third_party/rust/crossbeam-utils/build.rs | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/third_party/rust/crossbeam-utils/build.rs b/third_party/rust/crossbeam-utils/build.rs new file mode 100644 index 0000000000..617162fb52 --- /dev/null +++ b/third_party/rust/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"); +include!("build-common.rs"); + +fn main() { + let target = match env::var("TARGET") { + Ok(target) => convert_custom_linux_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 as the latest + // stable rustc is used when the build script doesn't run. This is useful + // for 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"); +} |