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| author | LeSeulArtichaut <leseulartichaut@gmail.com> | 2020-05-29 18:20:24 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-05-30 01:20:24 +0900 |
| commit | 9d0149ed37c47eef29d2a717814a37227dd909aa (patch) | |
| tree | 01f75c2e6e3e756f4a832c442fb257c6141154b0 /src/doc/rustc-dev-guide | |
| parent | e371b6055b48bd17d2f8d572b4bb6e99b897eb69 (diff) | |
| download | rust-9d0149ed37c47eef29d2a717814a37227dd909aa.tar.gz rust-9d0149ed37c47eef29d2a717814a37227dd909aa.zip | |
Document `RUSTFLAGS_STAGE_` bootstrap environment variables (#728)
* Document `RUSTFLAGS_STAGE_` * Fix typos Co-authored-by: Yuki Okushi <huyuumi.dev@gmail.com>
Diffstat (limited to 'src/doc/rustc-dev-guide')
| -rw-r--r-- | src/doc/rustc-dev-guide/src/building/bootstrapping.md | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/doc/rustc-dev-guide/src/building/bootstrapping.md b/src/doc/rustc-dev-guide/src/building/bootstrapping.md index 5bdc8dc6f18..5ba8ef88d37 100644 --- a/src/doc/rustc-dev-guide/src/building/bootstrapping.md +++ b/src/doc/rustc-dev-guide/src/building/bootstrapping.md @@ -159,6 +159,16 @@ links against. This `stage2/bin/rustc` compiler is shipped to end-users, along with the `stage 1 {std,rustc}` artifacts. +## Passing stage-specific flags to `rustc` + +`x.py` allows you to pass stage-specific flags to `rustc` when bootstrapping. +The `RUSTFLAGS_STAGE_0`, `RUSTFLAGS_STAGE_1` and `RUSTFLAGS_STAGE_2` +environment variables pass the given flags when building stage 0, 1, and 2 +artifacts respectively. + +Additionally, the `RUSTFLAGS_STAGE_NOT_0` variable, as its name suggests, pass +the given arguments if the stage is not 0. + ## Environment Variables During bootstrapping, there are a bunch of compiler-internal environment |