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Rollup merge of #47836 - Mark-Simulacrum:stage-flags, r=alexcrichton

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Add per-stage RUSTFLAGS: RUSTFLAGS_STAGE_{0,1,2} and RUSTFLAGS_STAGE_NOT_0

Fixes #47658.

r? @alexcrichton
This commit is contained in:
kennytm 2018-01-30 17:10:57 +08:00 committed by GitHub
commit e8868bdc56
1 changed files with 12 additions and 0 deletions
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12
src/bootstrap/builder.rs
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@ -469,6 +469,18 @@ impl<'a> Builder<'a> {
stage = compiler.stage;
}
let mut extra_args = env::var(&format!("RUSTFLAGS_STAGE_{}", stage)).unwrap_or_default();
if stage != 0 {
let s = env::var("RUSTFLAGS_STAGE_NOT_0").unwrap_or_default();
extra_args.push_str(" ");
extra_args.push_str(&s);
}
if !extra_args.is_empty() {
cargo.env("RUSTFLAGS",
format!("{} {}", env::var("RUSTFLAGS").unwrap_or_default(), extra_args));
}
// Customize the compiler we're running. Specify the compiler to cargo
// as our shim and then pass it some various options used to configure
// how the actual compiler itself is called.