25 lines
937 B
Rust
25 lines
937 B
Rust
use std::env;
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// Based on https://github.com/serde-rs/serde/blob/master/serde/build.rs
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fn main() {
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let target = env::var("TARGET").unwrap();
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let emscripten = target == "asmjs-unknown-emscripten" || target == "wasm32-unknown-emscripten";
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// Whitelist of archs that support std::sync::atomic module. Ideally we
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// would use #[cfg(target_has_atomic = "...")] but it is not stable yet.
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// Instead this is based on rustc's src/librustc_target/spec/*.rs.
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let has_atomic64 = target.starts_with("x86_64")
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|| target.starts_with("i686")
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|| target.starts_with("aarch64")
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|| target.starts_with("powerpc64")
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|| target.starts_with("sparc64")
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|| target.starts_with("mips64el");
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let has_atomic32 = has_atomic64 || emscripten;
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if has_atomic64 {
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println!("cargo:rustc-cfg=std_atomic64");
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}
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if has_atomic32 {
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println!("cargo:rustc-cfg=std_atomic");
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}
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}
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