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Update bootstrap documentation with the new envvars for RUSTFLAGS 

This follows <https://github.com/rust-lang/rust/pull/63722>.
This commit is contained in:
Gabriel de Perthuis 2020-11-24 12:20:16 +01:00 committed by Joshua Nelson
parent 5643607b1b
commit ced315b860
1 changed files with 2 additions and 6 deletions
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8
src/building/bootstrapping.md
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@ -309,12 +309,8 @@ The following tables indicate the outputs of various stage actions:
## 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, passes
the given arguments if the stage is not 0.
The `RUSTFLAGS_BOOTSTRAP` environment variable is passed as RUSTFLAGS to the bootstrap stage
(stage0), and `RUSTFLAGS_NOT_BOOTSTRAP` is passed when building artifacts for later stages.
## Environment Variables