42 lines
1.7 KiB
Rust
42 lines
1.7 KiB
Rust
use std::process::Command;
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// Capture build provenance (git rev/date, toolchain, target) into env vars the
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// crate reads via env! for the VERSION reply. Always emits every var, with an
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// "unknown" fallback, so a non-git build (e.g. a source tarball) still compiles.
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fn main() {
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println!("cargo:rerun-if-changed=.git/HEAD");
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println!("cargo:rerun-if-changed=.git/index");
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let git = |args: &[&str]| {
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Command::new("git")
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.args(args)
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.output()
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.ok()
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.filter(|o| o.status.success())
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.map(|o| String::from_utf8_lossy(&o.stdout).trim().to_string())
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.filter(|s| !s.is_empty())
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};
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let hash = git(&["rev-parse", "--short=7", "HEAD"]).unwrap_or_else(|| "unknown".into());
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let dirty = match git(&["status", "--porcelain", "--untracked-files=no"]) {
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Some(s) if !s.is_empty() => "-dirty",
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_ => "",
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};
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let date = git(&["log", "-1", "--format=%cd", "--date=short"]).unwrap_or_else(|| "unknown".into());
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let rustc = Command::new(std::env::var("RUSTC").unwrap_or_else(|_| "rustc".into()))
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.arg("--version")
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.output()
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.ok()
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.map(|o| String::from_utf8_lossy(&o.stdout).trim().to_string())
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.and_then(|s| s.split_whitespace().nth(1).map(str::to_string))
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.unwrap_or_else(|| "unknown".into());
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let target = std::env::var("TARGET").unwrap_or_else(|_| "unknown".into());
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println!("cargo:rustc-env=ECHOIRCD_GIT_HASH={hash}");
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println!("cargo:rustc-env=ECHOIRCD_GIT_DIRTY={dirty}");
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println!("cargo:rustc-env=ECHOIRCD_COMMIT_DATE={date}");
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println!("cargo:rustc-env=ECHOIRCD_RUSTC={rustc}");
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println!("cargo:rustc-env=ECHOIRCD_TARGET={target}");
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}
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