49 lines
1.7 KiB
Rust
49 lines
1.7 KiB
Rust
use std::env;
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use std::fs;
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use std::path::Path;
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fn main() {
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println!("cargo:rerun-if-changed=build.rs");
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let perf_libs_dir = {
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let manifest_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
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let mut path = Path::new(&manifest_dir);
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path = path.parent().unwrap();
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path.join(Path::new("target/perf-libs"))
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};
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let perf_libs_dir = perf_libs_dir.to_str().unwrap();
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// Ensure `perf_libs_dir` exists. It's been observed that
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// a cargo:rerun-if-changed= directive with a non-existent
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// directory triggers a rebuild on every |cargo build| invocation
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fs::create_dir_all(&perf_libs_dir).unwrap_or_else(|err| {
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if err.kind() != std::io::ErrorKind::AlreadyExists {
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panic!("Unable to create {}: {:?}", perf_libs_dir, err);
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}
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});
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let chacha = !env::var("CARGO_FEATURE_CHACHA").is_err();
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let cuda = !env::var("CARGO_FEATURE_CUDA").is_err();
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if chacha || cuda {
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println!("cargo:rerun-if-changed={}", perf_libs_dir);
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println!("cargo:rustc-link-search=native={}", perf_libs_dir);
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}
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if chacha {
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println!("cargo:rerun-if-changed={}/libcpu-crypt.a", perf_libs_dir);
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}
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if cuda {
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let cuda_home = match env::var("CUDA_HOME") {
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Ok(cuda_home) => cuda_home,
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Err(_) => String::from("/usr/local/cuda"),
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};
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println!("cargo:rerun-if-changed={}/libcuda-crypt.a", perf_libs_dir);
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println!("cargo:rustc-link-lib=static=cuda-crypt");
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println!("cargo:rustc-link-search=native={}/lib64", cuda_home);
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println!("cargo:rustc-link-lib=dylib=cudart");
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println!("cargo:rustc-link-lib=dylib=cuda");
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println!("cargo:rustc-link-lib=dylib=cudadevrt");
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}
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}
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