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build.rs
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build.rs
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#![deny(warnings)]
use std::env;
fn main() {
println!("cargo:rerun-if-changed=build.rs");
if let Some(true) = version_check::supports_feature("specialize") {
println!("cargo:rustc-cfg=feature=\"specialize\"");
}
if let Some(true) = version_check::supports_feature("stdsimd") {
println!("cargo:rustc-cfg=feature=\"stdsimd\"");
}
let arch = env::var("CARGO_CFG_TARGET_ARCH").expect("CARGO_CFG_TARGET_ARCH was not set");
if arch.eq_ignore_ascii_case("x86_64")
|| arch.eq_ignore_ascii_case("aarch64")
|| arch.eq_ignore_ascii_case("mips64")
|| arch.eq_ignore_ascii_case("powerpc64")
|| arch.eq_ignore_ascii_case("riscv64gc")
|| arch.eq_ignore_ascii_case("s390x")
{
println!("cargo:rustc-cfg=feature=\"folded_multiply\"");
}
}