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Handle rerun-if-changed directives in dependencies #2279

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Jan 15, 2016
Merged

Handle rerun-if-changed directives in dependencies #2279

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9 changes: 5 additions & 4 deletions src/cargo/ops/cargo_rustc/custom_build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -131,10 +131,11 @@ fn build_work<'a, 'cfg>(cx: &mut Context<'a, 'cfg>, unit: &Unit<'a>)
// Check to see if the build script as already run, and if it has keep
// track of whether it has told us about some explicit dependencies
let prev_output = BuildOutput::parse_file(&output_file, &pkg_name).ok();
if let Some(ref prev) = prev_output {
let val = (output_file.clone(), prev.rerun_if_changed.clone());
cx.build_explicit_deps.insert(*unit, val);
}
let rerun_if_changed = match prev_output {
Some(ref prev) => prev.rerun_if_changed.clone(),
None => Vec::new(),
};
cx.build_explicit_deps.insert(*unit, (output_file.clone(), rerun_if_changed));

try!(fs::create_dir_all(&cx.layout(unit.pkg, Kind::Host).build(unit.pkg)));
try!(fs::create_dir_all(&cx.layout(unit.pkg, unit.kind).build(unit.pkg)));
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