use std::{env, path::Path};
fn main() {
println!("cargo:rerun-if-changed=build.rs");
println!("cargo:rerun-if-changed=libunwind.a");
println!("cargo:rerun-if-env-changed=RUSTFLAGS");
if env::var("CARGO_FEATURE_STUB_ONLY").is_ok() {
return;
}
let libunwind = if env::var("CARGO_ENCODED_RUSTFLAGS")
.unwrap()
.split('\x1f')
.any(|flags| flags.starts_with("-Clinker-plugin-lto"))
{
"./libunwind_lto.a"
} else {
"./libunwind.a"
};
let out_dir = env::var("OUT_DIR").unwrap();
let out_file = Path::new(&out_dir).join("libunwind.a");
std::fs::copy(libunwind, out_file).unwrap();
println!("cargo:rustc-link-lib=static=unwind");
println!("cargo:rustc-link-search=native={}", out_dir);
}