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Assemble the compiler when running x.py build - #89759
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rust-highfive
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Oct 11, 2021
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Mark-Simulacrum
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Oct 11, 2021
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r=me with comments fixed |
Previously, there was no way to actually get binaries in `build/$TARGET/stage1/bin` without building the standard library. This makes it possible to build just the compiler. This can be useful when the standard library isn't actually necessary for trying out your tests (e.g. a bug that can be reproduced with only a `no_core` crate).
jyn514
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Oct 13, 2021
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@bors r=Mark-Simulacrum |
bors
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Oct 13, 2021
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📌 Commit 31265c6 has been approved by |
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…ulacrum Assemble the compiler when running `x.py build` Previously, there was no way to actually get binaries in `build/$TARGET/stage1/bin` without building the standard library. This makes it possible to build just the compiler. This can be useful when the standard library isn't actually necessary for trying out your tests (e.g. a bug that can be reproduced with only a `no_core` crate). Closesrust-lang#73519.
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…askrgr Rollup of 6 pull requests Successful merges: - rust-lang#89347 (suggestion for typoed crate or module) - rust-lang#89670 (Improve `std::thread::available_parallelism` docs) - rust-lang#89757 (Use shallow clones for submodules) - rust-lang#89759 (Assemble the compiler when running `x.py build`) - rust-lang#89846 (Add `riscv32imc-esp-espidf` to 1.56 changelog) - rust-lang#89853 (Update the 1.56.0 release header for consistency) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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rust-lang#89759 introduced a panic: ``` Assembling stage3 compiler (x86_64-apple-darwin) thread 'main' panicked at 'fs::read(stamp) failed with No such file or directory (os error 2) ("/Users/user/rust2/build/x86_64-apple-darwin/stage2-rustc/x86_64-apple-darwin/release/.librustc.stamp")', src/bootstrap/lib.rs:1296:24 ``` This wasn't actually a bug in that PR - the problem was that `x build --stage 3` is broken, and has been for quite some time, even ignoring the stamp file error: ``` thread 'main' panicked at 'src.symlink_metadata() failed with No such file or directory (os error 2) ("failed to determine metadata of /home/jnelson/rust-lang/rust/build/x86_64-unknown-linux-gnu/stage2-rustc/x86_64-unknown-linux-gnu/release/rustc-main")', src/bootstrap/lib.rs:1414:24 ``` It needs to take into account whether the artifacts from stage1 are being reused, rather than blindly assuming rustc will be recompiled. Doing so is kind of annoying, because it requires knowing the target the compiler is being built for. Instead, just revert to the old behavior of `build --stage 2 compiler/rustc`, which avoids trying to create the sysroot in the first place.
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Previously, there was no way to actually get binaries in
build/$TARGET/stage1/binwithout building the standard library. Thismakes it possible to build just the compiler. This can be useful when
the standard library isn't actually necessary for trying out your tests
(e.g. a bug that can be reproduced with only a
no_corecrate).Closes#73519.