87 lines
2.3 KiB
Rust
87 lines
2.3 KiB
Rust
use std::{env, fs::File, io::Write, path::Path};
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fn main() {
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println!("cargo:rerun-if-changed=build.rs");
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let out_dir = env::var_os("OUT_DIR").unwrap();
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let dest_path = Path::new(&out_dir).join("version.rs");
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let mut w = File::create(dest_path).unwrap();
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let allowed_features = [
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"c2s-incoming",
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"c2s-outgoing",
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"s2s-incoming",
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"s2s-outgoing",
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"tls",
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"quic",
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"websocket",
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"tls-ca-roots-native",
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"tls-ca-roots-bundled",
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"logging",
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"systemd",
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];
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let optional_deps = [
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"rustls",
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"tokio-rustls",
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"rustls-pemfile",
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"quinn",
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"tokio-tungstenite",
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"futures-util",
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"trust-dns-resolver",
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"reqwest",
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"lazy-static",
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"rustls-native-certs",
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"webpki-roots",
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"env-logger",
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"rand",
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"nix",
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];
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let mut features = Vec::new();
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let mut optional = Vec::new();
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for (mut key, value) in env::vars() {
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//writeln!(&mut w, "{key}: {value}", ).unwrap();
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if value == "1" && key.starts_with("CARGO_FEATURE_") {
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let mut key = key.split_off(14).replace('_', "-");
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key.make_ascii_lowercase();
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if allowed_features.contains(&key.as_str()) {
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features.push(key);
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} else if optional_deps.contains(&key.as_str()) {
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optional.push(key);
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}
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}
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}
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features.sort_by(|a, b| {
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allowed_features
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.iter()
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.position(|&r| r == a)
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.unwrap()
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.partial_cmp(&allowed_features.iter().position(|&r| r == b).unwrap())
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.unwrap()
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});
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optional.sort_by(|a, b| {
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optional_deps
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.iter()
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.position(|&r| r == a)
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.unwrap()
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.partial_cmp(&optional_deps.iter().position(|&r| r == b).unwrap())
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.unwrap()
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});
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let features = features.join(",");
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let optional = optional.join(",");
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let name = env!("CARGO_PKG_NAME");
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let version = env!("CARGO_PKG_VERSION");
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let target = env::var("TARGET").unwrap();
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writeln!(
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&mut w,
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"{{println!(
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\"{name} {version} ({target})
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Features: {features}
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Optional crates: {optional}\");}}"
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)
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.unwrap();
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}
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