rustbuild feature to not rebuild a lower stage #38326
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T-bootstrap
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
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Dec 15, 2016
rustbuild: Add cli option --keep-stage This option is intended to be used like: ./x.py build --stage 1 --keep-stage 0 Which skips all stage 0 steps, so that stage 1 can be recompiled directly (even if for example libcore has changes). This is useful when working on `cfg(not(stage0))` parts of the libraries or when re-running stage 1 tests in libraries in general. Fixes #38326
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Often you are in a situation where you want to try some modifications of some basic library like libcore or some other library with the stage1 compiler, without rebuilding stage1.
A param like
--assume-stage=npassed to rustbuild which doesn't (re-)build stage n artifacts would be really neat for this.@bluss had the original idea, and it would be really useful for development on the i128 PR as well: there, large parts of the libcompiler_builtins crate are under
#[cfg(not(stage0))], so I'm only interested in what happens in higher stages when modifying them.The text was updated successfully, but these errors were encountered: