Allow configuring codegen-backends directory name #48263
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C-enhancement
Category: An issue proposing an enhancement or a PR with one.
T-bootstrap
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
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pietroalbini
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Keruspe
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This allows to parallel-install several versions of rust system-wide Fixes rust-lang#48263 Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
kennytm
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make codegen-backends directory name configurable This allows to parallel-install several versions of rust system-wide Fixes rust-lang#48263
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Currently, codegen backends are installed as e.g.
/usr/lib/rustlib/x86_64-unknown-linux-gnu/codegen-backends/librustc_trans-llvm.soAs there is no hash or such in the library name (like there is for all the rust libraries shipped with rustc), installing several versions of rust is not possible as there would be a file conflict.
On exherbo we can install rust stable, rust beta and rust nightly, but with these codegen backends we cannot anymore. It would be great to either have a hash in the library name, or to be able to change
codegen-backendsto e.g.codegen-backends-betain config.toml at build time, for example.Would such a patch be accepted? Which of the two options would be preferred?
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