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Fix host code appearing in Wasm binaries
This is a direct fix for issue [132802](https://github.com/rust-lang/rust/issues/132802).
Followed the outline as follows:
> * give a hard error in bootstrap when using gcc to compile for wasm
> * change our CI to use clang instead of gcc
> * add a test that compiling a sample program for wasm32-unknown doesn't give any linker warnings
The `test-various` ci job was also changed.
try-job: test-various
try-job: dist-various-1
try-job: dist-various-2
try-job: x86_64-msvc-1
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This updates the wasi-sdk used in CI to build release binaries and run
CI with. No major motivation beyond keeping things up-to-date and
following the development of wasi-sdk.
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Added sanity check to bootstrap to hard error on wasm builds without
clang, and changed distribution image `dist-various-2` to use clang to
build for official targets.
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CI: build FreeBSD artifacts on FreeBSD 13.4
13.2 is EoL, and 13.3 will be EoL too in about 2 months. Plus, both suffer from a bug in LLVM's libunwind. It causes a segfault inside of std::backtrace::Backtrace::capture().
Fixes #132185
cc ``````@ehuss`````` . before you can do the trybuild, you'll also have to download new FreeBSD 13.4 base.txz images and place them in https://ci-mirrors.rust-lang.org/rustc , then update this PR with the correct file names.
try-job: dist-x86_64-freebsd
try-job: dist-various-2
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Bump to the latest wasi-sdk-25 release which brings in various wasi-libc
updates as well as LLVM 19 as the version used to compile wasi-libc.
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This commit is the final step in the journey of renaming the historical
`wasm32-wasi` target in the Rust compiler to `wasm32-wasip1`. Various
steps in this journey so far have been:
* 2023-04-03: rust-lang/compiler-team#607 - initial proposal for this rename
* 2024-11-27: rust-lang/compiler-team#695 - amended schedule/procedure for rename
* 2024-01-29: rust-lang/rust#120468 - initial introduction of `wasm32-wasip1`
* 2024-06-18: rust-lang/rust#126662 - warn on usage of `wasm32-wasi`
* 2024-11-08: this PR - remove the `wasm32-wasi` target
The full transition schedule is in [this comment][comment] and is
summarized with:
* 2024-05-02: Rust 1.78 released with `wasm32-wasip1` target
* 2024-09-05: Rust 1.81 released warning on usage of `wasm32-wasi`
* 2025-01-09: Rust 1.84 to be released without the `wasm32-wasi` target
This means that support on stable for the replacement target of
`wasm32-wasip1` has currently been available for 6 months. Users have
already seen warnings on stable for 2 months about usage of
`wasm32-wasi` and stable users have another 2 months of warnings before
the target is removed from stable.
This commit is intended to be the final step in this transition so the
source tree should no longer mention `wasm32-wasi` except in historical
reference to the older name of the `wasm32-wasip1` target.
[comment]: https://github.com/rust-lang/rust/pull/120468#issuecomment-1977878747
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This reverts commit 1239c81c145d2bfb96f32856f377cd741d5c7256.
Fix GH-132185 revert for now until early next year/FreeBSD 13.3
becomes EOL.
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raising to the lowest still active supported freebsd version.
From 13.1 (already eol too), freebsd introduces a cpu affinity layer
with linux. It also introduces a api compatible copy_file_range which
can be used like its linux's counterpart.
The former is essential to build #120589, therefore breaks the backward
compatibility with the previous FreeBSD releases.
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This commit updates the `wasi-sdk` download used by the `wasm32-wasi*`
targets. The motivation for this commit is generally just "keep things
up to date" and is not intended to cause any issues or differences from
before, just a routine update.
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This commit promotes the `wasm32-wasip2` Rust target to tier 2 as
proposed in rust-lang/compiler-team#760. There are two major changes in
this PR:
1. The `dist-various-2` container, which already produces the other WASI
targets, now has an extra target added for `wasm32-wasip2`.
2. A new `wasm-component-ld` binary is added to all host toolchains when
LLD is enabled. This is the linker used for the `wasm32-wasip2` target.
This new linker is added for all host toolchains to ensure that all host
toolchains can produce the `wasm32-wasip2` target. This is similar to
how `rust-lld` was originally included for all host toolchains to be
able to produce WebAssembly output when the targets were first added.
The new linker is developed [here][wasm-component-ld] and is pulled in
via a crates.io-based dependency to the tree here.
[wasm-component-ld]: https://github.com/bytecodealliance/wasm-component-ld
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`compiler_builtins`
Formerly the `loongarch*-*-none*` targets were added to the
`dist-various-2` CI job, but no corresponding toolchain was added along
with them. This meant the `compiler_builtins` for the targets were built
with the host toolchain.
As the other `dist-various` toolchains are mostly pre-built so far, to
avoid burdening them with crosstool-ng builds, simply move the two
bare-metal LoongArch targets to the `dist-loongarch64-linux` job which
has a ready-to-use LoongArch toolchain. With the proper CFLAGS applied
it is possible to build artifacts suitable for bare-metal. I verified
that the `compiler_builtins` objects are now correctly produced
regarding architecture and ABI, with the changes here applied.
Fixes #125908.
cc @heiher
try-job: dist-loongarch64-linux
try-job: dist-various-2
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This commit updates how the WASI targets are configured with their
toolchain. Long ago a `config.toml` option of `wasi-root` was added to
enable building with the WASI files produced by wasi-libc. Additionally
for CI testing and release building the Rust toolchain has been using a
hard-coded commit of wasi-libc which is bundled with the release of the
`wasm32-wasip1` target, for example.
Nowadays though the wasi-sdk project, the C/C++ toolchain for WASI, is
the go-to solution for compiling/linking WASI code and contains the
more-or-less official releases of wasi-libc. This commit migrates CI to
using wasi-sdk releases and additionally updates `bootstrap` to
recognize when this is configured. This means that with `$WASI_SDK_PATH`
configured there's no further configuration necessary to get a working
build. Notably this also works better for the new targets of WASI as
well, such as `wasm32-wasip2` and `wasm32-wasip1-threads` where the
wasi-sdk release now has libraries for all targets bundled within it.
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Rename `wasm32-wasi-preview1-threads` to `wasm32-wasip1-threads`
This commit renames the current `wasm32-wasi-preview1-threads` target to `wasm32-wasip1-threads`. The need for this rename is a bit unfortunate as the previous name was chosen in an attempt to be future-compatible with other WASI targets. Originally this target was proposed to be `wasm32-wasi-threads`, and that's what was originally implemented in wasi-sdk as well. After discussion though and with the plans for the upcoming component-model target (now named `wasm32-wasip2`) the "preview1" naming was chosen for the threads-based target. The WASI subgroup later decided that it was time to drop the "preview" terminology and recommends "pX" instead, hence previous PRs to add `wasm32-wasip2` and rename `wasm32-wasi` to `wasm32-wasip1`.
So, with all that history, the "proper name" for this target is different than its current name, so one way or another a rename is required. This PR proposes renaming this target cold-turkey, unlike `wasm32-wasi` which is having a long transition period to change its name. The threads-based target is predicted to see only a fraction of the traffic of `wasm32-wasi` due to the unstable nature of the WASI threads proposal itself.
While I was here I updated the in-tree documentation in the target spec file itself as most of the documentation was copied from the original WASI target and wasn't as applicable to this target.
Also, as an aside, I can at least try to apologize for all the naming confusion here, but this is hopefully the last WASI-related rename.
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This commit renames the current `wasm32-wasi-preview1-threads` target to
`wasm32-wasip1-threads`. The need for this rename is a bit unfortunate
as the previous name was chosen in an attempt to be future-compatible
with other WASI targets. Originally this target was proposed to be
`wasm32-wasi-threads`, and that's what was originally implemented in
wasi-sdk as well. After discussion though and with the plans for the
upcoming component-model target (now named `wasm32-wasip2`) the
"preview1" naming was chosen for the threads-based target. The WASI
subgroup later decided that it was time to drop the "preview"
terminology and recommends "pX" instead, hence previous PRs to add
`wasm32-wasip2` and rename `wasm32-wasi` to `wasm32-wasip1`.
So, with all that history, the "proper name" for this target is
different than its current name, so one way or another a rename is
required. This PR proposes renaming this target cold-turkey, unlike
`wasm32-wasi` which is having a long transition period to change its
name. The threads-based target is predicted to see only a fraction of
the traffic of `wasm32-wasi` due to the unstable nature of the WASI
threads proposal itself.
While I was here I updated the in-tree documentation in the target spec
file itself as most of the documentation was copied from the original
WASI target and wasn't as applicable to this target.
Also, as an aside, I can at least try to apologize for all the naming
confusion here, but this is hopefully the last WASI-related rename.
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This commit adds a new target called `wasm32-wasip1` to rustc.
This new target is explained in these two MCPs:
* https://github.com/rust-lang/compiler-team/issues/607
* https://github.com/rust-lang/compiler-team/issues/695
In short, the previous `wasm32-wasi` target is going to be renamed to
`wasm32-wasip1` to better live alongside the [new
`wasm32-wasip2` target](https://github.com/rust-lang/rust/pull/119616).
This new target is added alongside the `wasm32-wasi` target and has the
exact same definition as the previous target. This PR is effectively a
rename of `wasm32-wasi` to `wasm32-wasip1`. Note, however, that
as explained in rust-lang/compiler-team#695 the previous `wasm32-wasi`
target is not being removed at this time. This change will reach stable
Rust before even a warning about the rename will be printed. At this
time this change is just the start where a new target is introduced and
users can start migrating if they support only Nightly for example.
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MCP: https://github.com/rust-lang/compiler-team/issues/664
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We should symlink /usr/include/x86_64-linux-gnu/asm for the host
triple, rather than /usr/include/asm-generic, which is used in the
implementation for asm for specific triple, but shouldn't be used
by itself.
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Historically, Rust's Fuchsia targets have been labeled x86_64-fuchsia
and aarch64-fuchsia. However, they should technically contain vendor
information. This CL changes Fuchsia's target triples to include the
"unknown" vendor since Clang now does normalization and handles all
triple spellings.
This was previously attempted in #90510, which was closed due to
inactivity.
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This fixes an issue where the C and asm sources built by
compiler_builtins were being compiled as ELF objects instead of PE
objects. This wasn't noticed before because it doesn't cause
compiler_builtins or rustc to fail to build. You only see a failure when
a program is built that references one of the symbols in an ELF object.
Compiling with clang fixes this because the `cc` crate converts the UEFI
targets into Windows targets that clang understands, causing it to
produce PE objects.
Note that this requires compiler_builtins >= 0.1.84.
Fixes https://github.com/rust-lang/rust/issues/104326
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MCP: https://github.com/rust-lang/compiler-team/issues/555
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This reverts commit 3acb505ee560770c62bad5362f6caf7567d467b9
(PR #101833).
The changes in this commit caused several bugs or at least
incompatibilies. For now we're reverting this commit and will re-land it
alongside fixes for those bugs.
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The build script for `compiler_builtins` doesn't support cross-compilation. I tried fixing it, but the cc crate itself
doesn't appear to support cross-compiling to windows either unless you use the -gnu toolchain:
```
error occurred: Failed to find tool. Is `lib.exe` installed?
```
Rather than trying to fix it or special-case the platforms without bugs,
make it opt-in instead of automatic.
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PR feedback
PR Followups
Updating clang download
Updating clang download
Restructuring env used
Restructuring env used
Adding chmod
Adding chmod
Adding chmod
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This updates the dist-various-1 and dist-various-2 images to Ubuntu
20.04. This requires some adjustments:
* `DEBIAN_FRONTEND=noninteractive` required for apt install.
* `team-gcc-argm-embedded` PPA does not support focal. However,
we can simply use the distro-provided `gcc-arm-none-eabi`. Per
the comment, the PPA was only used to get a newer version.
* rumprun has to be updated to avoid a linker error.
* We need to build rumrun with `NOGCCERROR`, which disables use
of `-Werror` and allows building with a newer compiler.
* We need to install `libtinfo5`, which appears to be a dependency
of the clang used during the fuchsia build.
* We need to switch to `g++-8` rather than `g++-7`, as at least
`g++-7-arm-linux-gnueabi` is not available on focal.
* We need to upgrade to GCC 6.5 for the Solaris build, as GCC 6.4
does not support the newer libisl version.
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While technically the i686-unknown-freebsd target has been a tier 2
development platform for a long time, with full toolchain tarballs
available on static.rust-lang.org, due to a bug in the manifest
generation the target was never available for download through rustup.
The infrastructure team privately inquired the FreeBSD package
maintainers, and they weren't relying on those tarballs either, so it's
a fair assumption to say practically nobody is using those tarballs.
This PR then removes the CI builder that produces full tarballs for the
target, and moves the compilation of rust-std for the target in
dist-various-2.
The x86_64-unknown-freebsd target is *not* affected.
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Trying to fix a problem in CI. Maybe some version of Docker is not
passing '' args correctly?
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We need to add runners designed for an aarch64 host system, and it'd be
nice to return an error message if someone tries to run an image
designed for an host architecture in another one.
To start the work on this, this commit moves all the existing builders
in the host-x86_64 directory, and changes the run.sh script to look up
the image in the correct directory based on the host architecture.
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