d971f36f10
Emit BUILD_TIME and BUILD_GIT (git describe --always --dirty) as rustc env vars so the running firmware can identify itself on serial and on-panel. A rerun-if-changed on a nonexistent file forces the script every build, keeping the timestamp fresh. Bring-up lesson: know which build you're diagnosing.
28 lines
1.0 KiB
Rust
28 lines
1.0 KiB
Rust
use std::process::Command;
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fn main() {
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embuild::espidf::sysenv::output();
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// Stamp the binary so serial output and on-panel text identify the
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// exact build (bring-up lesson: know which build you're diagnosing).
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let git = Command::new("git")
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.args(["describe", "--always", "--dirty"])
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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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.unwrap_or_else(|| "unknown".into());
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let time = Command::new("date")
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.args(["-u", "+%m-%d %H:%M"])
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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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.unwrap_or_else(|| "unknown".into());
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println!("cargo:rustc-env=BUILD_GIT={git}");
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println!("cargo:rustc-env=BUILD_TIME={time}Z");
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// Pointing rerun-if-changed at a file that never exists forces this
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// script to rerun on every build, keeping BUILD_TIME fresh.
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println!("cargo:rerun-if-changed=.force-build-stamp");
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}
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