diff options
| -rw-r--r-- | src/bootstrap/src/core/build_steps/compile.rs | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/bootstrap/src/core/build_steps/compile.rs b/src/bootstrap/src/core/build_steps/compile.rs index 74a8cea1ebe..c9126a3929e 100644 --- a/src/bootstrap/src/core/build_steps/compile.rs +++ b/src/bootstrap/src/core/build_steps/compile.rs @@ -12,6 +12,7 @@ use std::ffi::OsStr; use std::io::BufReader; use std::io::prelude::*; use std::path::{Path, PathBuf}; +use std::time::SystemTime; use std::{env, fs, str}; use serde_derive::Deserialize; @@ -2612,7 +2613,17 @@ pub fn strip_debug(builder: &Builder<'_>, target: TargetSelection, path: &Path) } let previous_mtime = t!(t!(path.metadata()).modified()); - command("strip").arg("--strip-debug").arg(path).run_capture(builder); + let stamp = BuildStamp::new(path.parent().unwrap()) + .with_prefix(path.file_name().unwrap().to_str().unwrap()) + .with_prefix("strip") + .add_stamp(previous_mtime.duration_since(SystemTime::UNIX_EPOCH).unwrap().as_nanos()); + + // Running strip can be relatively expensive (~1s on librustc_driver.so), so we don't rerun it + // if the file is unchanged. + if !stamp.is_up_to_date() { + command("strip").arg("--strip-debug").arg(path).run_capture(builder); + } + t!(stamp.write()); let file = t!(fs::File::open(path)); |