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This commit updates the support for the `wasm-component-ld` tool
from #126967 to conditionally build it rather than unconditionally
building it when LLD is enabled. This support is disabled by default and
can be enabled by one of two means:
* the `extended` field in `config.toml` which dist builders use to build
a complete set of tools for each host platform.
* a `"wasm-component-ld"` entry in the `tools` section of `config.toml`.
Neither of these are enabled by default meaning that most local builds
will likely not have this new tool built. Dist builders should still,
however, build the tool.
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r=Mark-Simulacrum
handle ci-rustc incompatible options during config parse
This PR ensures that `config.toml` does not use CI rustc incompatible options when CI rustc is enabled (just like [ci-llvm checks](https://github.com/rust-lang/rust/blob/e2cf31a6148725bde4ea48acf1e4fe72675257a2/src/bootstrap/src/core/config/config.rs#L1809-L1836)). Some options can change compiler's behavior in certain scenarios. If we don't check these incompatible options, CI runners using CI rustc might ignore options we have explicitly set. This could be dangerous as we might think a rustc test passed with option T but in fact it wasn't tested with option T.
Later in https://github.com/rust-lang/rust/pull/122709, I will disable CI rustc if any of those options were used (similar to [this approach](https://github.com/rust-lang/rust/blob/dd2c24aafddbd9cc170f32f5b447c7d3005c7412/src/ci/run.sh#L165-L169)). If CI runners fail because of these checks, it means the logic in run.sh isn't covering the incompatible options correctly (since any incompatible option should turn off CI rustc).
The list may not be complete, but should be a good first step as it's better than nothing!
Blocker for https://github.com/rust-lang/rust/pull/122709
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Signed-off-by: onur-ozkan <work@onurozkan.dev>
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Leading spaces in config options cause `configure` script to fail.
Signed-off-by: onur-ozkan <work@onurozkan.dev>
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It's been 5 months since this field was deprecated.
Signed-off-by: onur-ozkan <work@onurozkan.dev>
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use key-value format in stage0 file
Currently, we are working on the python removal task on bootstrap. Which means we have to extract some data from the stage0 file using shell scripts. However, parsing values from the stage0.json file is painful because shell scripts don't have a built-in way to parse json files.
This change simplifies the stage0 file format to key-value pairs, which makes it easily readable from any environment.
See the zulip thread for more details: https://rust-lang.zulipchat.com/#narrow/stream/326414-t-infra.2Fbootstrap/topic/Using.20different.20format.20in.20the.20stage0.20file
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Signed-off-by: onur-ozkan <work@onurozkan.dev>
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do not allow using local llvm while using rustc from ci
From: https://github.com/rust-lang/rust/issues/123586#issuecomment-2043296578
> Even if `llvm.download-ci-llvm` is set to true, `stage > 0` rustc will always use the prebuilt LLVM library which comes with ci-rustc. So I tried to use locally-built LLVM libraries in the ci-rustc by replacing the existing LLVM libraries with the locally built ones, and it appears that this is indeed a limitation of using `rust.download-rustc=true` as it fails with the following error:
>
> ```
> $ ./build/host/ci-rustc/bin/rustc --version
> ./build/host/ci-rustc/bin/rustc: symbol lookup error: /home/nimda/devspace/.other/rustc-builds/build/x86_64-unknown-linux-gnu/ci-rustc/bin/../lib/librustc_driver-a03ea465d8e03db1.so: undefined symbol: LLVMInitializeARMTargetInfo, version LLVM_18.1
> ```
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> So, if `rust.download-rustc` is set to true and `llvm.download-ci-llvm` is false, I believe bootstrap should terminate the process (as it always uses prebuilt LLVM libraries from ci-rustc, there is no point to build LLVM locally) while parsing the configuration.
Resolves #123586
r? Mark-Simulacrum
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This change makes `build.bootstrap-cache-path` option to be configurable with
`./configure` script, so it can be used like `./configure --bootstrap-cache-path=demo`.
Signed-off-by: onur-ozkan <work@onurozkan.dev>
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Signed-off-by: onur-ozkan <work@onurozkan.dev>
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rustc is just one tool/executable, even if at the center of the toolchain
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This commit adds a `runner` field configuration to `config.toml` for
specifying a wrapper executable when executing binaries for a target.
This is pulled out of #122036 where a WebAssembly runtime is used, for
example, to execute tests for `wasm32-wasip1`.
The name "runner" here is chosen to match Cargo's `CARGO_*_RUNNER`
configuration, and to make things a bit more consistent this
additionally renames compiletest's `--runtool` argument to `--runner`.
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Add an option to have an external download/bootstrap cache
Follow up from #116697 to address https://github.com/rust-lang/rust/pull/116697#pullrequestreview-1677176395
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Setting the bootstrap cache path to an external location can help to
speed up builds in cases where the build directory is not kept between
builds, e.g. in CI or other automated build systems.
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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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This is very helpful for profiling. I've hacked this in many times, so
let's add it properly.
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This allows building the compiler itself with one backend while using
another backend at runtime. For example this allows compiling rustc to
wasm using LLVM, while using Cranelift at runtime to produce actual
code. Cranelift can't compile to wasm, but is perfectly capable of
running on wasm. LLVM can compile to wasm, but can't run on wasm. [^1]
[^1]: The prototype of this still requires a couple of other patches.
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in particular, this makes the `c` feature for compiler-builtins an explicit opt-in, rather than silently detected by whether `llvm-project` is checked out on disk.
exposing this is necessary because the `cc` crate doesn't support cross-compiling to MSVC, and we want people to be able to run `x check --target foo` regardless of whether they have a c toolchain available.
this also uses the new option in CI, where we *do* want to optimize compiler_builtins.
the new option is off by default for the `dev` channel and on otherwise.
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This field was not functioning as described in its comment in `config.example.toml`.
Also, updated the default value to `true` to keep the bootstrapping behavior as it was before.
Signed-off-by: onur-ozkan <work@onurozkan.dev>
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don't build `rust-analyzer-proc-macro-srv` on def config
Should be very easy to understand when reviewing commit-by-commit.
Blocker for #118861
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Signed-off-by: onur-ozkan <work@onurozkan.dev>
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This way, we only update CONFIG_CHANGE_HISTORY for major changes, which is
much simpler (and updating example.toml doesn't make much sense)
Signed-off-by: onur-ozkan <work@onurozkan.dev>
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Add two options when building rust: strip and stack protector.
If set `strip = true`, symbols will be stripped using `-Cstrip=symbols`.
Also can set `stack-protector` and stack protectors will be used.
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Signed-off-by: onur-ozkan <work@onurozkan.dev>
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In the future Windows will enable Control-flow Enforcement Technology
(CET aka Shadow Stacks). To protect the path where the context is
updated during exception handling, the binary is required to enumerate
valid unwind entrypoints in a dedicated section which is validated when
the context is being set during exception handling.
The required support for EHCONT has already been merged into LLVM,
long ago. This change adds the Rust codegen option to enable it.
Reference:
* https://reviews.llvm.org/D40223
This also adds a new `ehcont-guard` option to the bootstrap config which
enables EHCont Guard when building std.
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Signed-off-by: onur-ozkan <work@onurozkan.dev>
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Three tasks have been implemented here.
Add a new `download-ci-llvm = if-unchange` option and enable if by
default for `profile = codegen`.
Include all build artifacts by traversing the llvm-project build output,
Keep the downloadable llvm the same state as if you have just run a full
source build.
After selecting the codegen profile during ./x.py setup, the submodule
will be automatically downloaded.
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PR #105716 added support for NDK r25b, and removed support for r15. Since
the switch to r25b would have broken existing r15 users anyway, let's
take the opportunity to make the interface more user friendly.
Firstly move the android-ndk property to [build] instead of the
targets. This is possible now that the NDK has obsoleted the concept of
target-specific toolchains.
Also make the property take the NDK root directory instead of the
"toolchains/llvm/prebuilt/<host tag>" subdirectory.
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bootstrap major change detection implementation
The use of `changelog-seen` and `bootstrap/CHANGELOG.md` has not been functional in any way for many years. We often do major/breaking changes but never update the changelog file or the `changelog-seen`. This is an alternative method for tracking major or breaking changes and informing developers when such changes occur.
Example output when bootstrap detects a major change:
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Signed-off-by: onur-ozkan <work@onurozkan.dev>
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issue has since been fixed
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See https://github.com/rust-lang/rust/pull/115558#issuecomment-1722601187
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Signed-off-by: onur-ozkan <work@onurozkan.dev>
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Allow using external builds of the compiler-rt profile lib
This changes the bootstrap config `target.*.profiler` from a plain bool
to also allow a string, which will be used as a path to the pre-built
profiling runtime for that target. Then `profiler_builtins/build.rs`
reads that in a `LLVM_PROFILER_RT_LIB` environment variable.
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