Rewrite the `ci.py` script in Rust
It would seem that I would learn by now that any script written in Python will become unmaintainable sooner or later, but alas..
r? `@marcoieni`
try-job: aarch64-gnu
try-job: dist-x86_64-linux-alt
try-job: x86_64-msvc-ext2
Fixes: https://github.com/rust-lang/rust/issues/137013
Build GCC on CI
Previously, we have downloaded a specific commit of GCC and prebuilt it inside Docker using the `build-gccjit.sh` script. This PR removes that scripts and uses the bootstrap GCC step. This allows us to use the `src/gcc` submodule for determining which GCC should be built, and it also moves the logic closer to LLVM, which is also built by bootstrap.
A few things to note:
- The `sccache` option is currently in the `llvm` block, so the GCC build uses `llvm.ccache`, which is a bit weird :) We could either add `gcc.ccache`, or (what I think would be better) to just move `ccache` to the `build` section, as I don't think that it will be necessary to use ccache for LLVM, but not for GCC.
- When the GCC codegen backend is built, it needs to depend on a step that first builds GCC. This is currently done in a hacky way. The proper solution is to create a separate step for the GCC codegen backend, but that is a larger change. Let me know what you think.
r? `@onur-ozkan`
try-job: i686-msvc-1
try-job: x86_64-mingw-1
Add rustdoc-gui regression test for #137082
Fixes https://github.com/rust-lang/rust/issues/137082.
Added new commands in `browser-ui-test` allowing us to add a regression test for #137082 and also another to copy code examples content.
r? `@notriddle`
Bump sccache in CI to 0.9.1
We haven't updated the used sccache version for years, it has accrued a bunch of fixes and features in the meantime. It now supports the `--show-adv-stats` flag, which gives a more detailed summary of the results of caching. And it can also cache Rust code, which could be useful in the future (https://github.com/rust-lang/rust/pull/136942 - although now there are no large wins).
It also supports caching PGO now, but since the PGO profiles are always different, it won't make any real difference.
https://github.com/rust-lang/rust/pull/133076 previously tried to update the version to 0.3 (CC `@klensy)`
r? `@marcoieni`
CI: Stop /msys64/bin from being prepended to PATH in msys2 shell
We used to do this along time ago but we stopped doing it when we started installing msys2 manually. 4fd3cf96a1/src/ci/scripts/install-msys2.sh (L11-L13)Fixes#136795
try-job: dist-i686-mingw
Linux v6.14-rc3 contains commit 6273a058383e ("x86: rust: set
rustc-abi=x86-softfloat on rustc>=1.86.0"), which resolves the error
from https://github.com/rust-lang/rust/pull/136146.
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Fix musl's CVE-2025-26519
The musl project [announced CVE-2025-26519](https://www.openwall.com/lists/musl/2025/02/13/1), which could result in out-of-bounds writes when calling the `iconv` function. There is no musl release available with the fixes at this point in time (and we're using an older version of musl anyway), so this PR applies the provided patches on top of the musl source tarball we download.
ci: Use largedisk for loongarch
`dist-loongarch64-linux` and `dist-loongarch64-musl` seem to run out of disk space when adding the amdgpu LLVM backend. There are changes underway to free more disk space, but that may take a while, so it was suggested to switch the affected jobs to a largedisk runner until that is ready.
`dist-powerpc64-linux` is another job that ran out of disk space one time, but it succeeded the other times, so I did not include it here.
amdgpu target PR with more references to the failures: #134740
r? ```@marcoieni```
