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rustbuild: Pass `ccache` to build scripts
This is a re-attempt at #48192 hopefully this time with 100% less randomly
[blocking builds for 20 minutes][block]. To work around #48192 the sccache
server is started in the `run.sh` script very early on in the compilation
process.
[block]: https://github.com/rust-lang/rust/issues/48192
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This commit imports the LLD project from LLVM to serve as the default linker for
the `wasm32-unknown-unknown` target. The `binaryen` submoule is consequently
removed along with "binaryen linker" support in rustc.
Moving to LLD brings with it a number of benefits for wasm code:
* LLD is itself an actual linker, so there's no need to compile all wasm code
with LTO any more. As a result builds should be *much* speedier as LTO is no
longer forcibly enabled for all builds of the wasm target.
* LLD is quickly becoming an "official solution" for linking wasm code together.
This, I believe at least, is intended to be the main supported linker for
native code and wasm moving forward. Picking up support early on should help
ensure that we can help LLD identify bugs and otherwise prove that it works
great for all our use cases!
* Improvements to the wasm toolchain are currently primarily focused around LLVM
and LLD (from what I can tell at least), so it's in general much better to be
on this bandwagon for bugfixes and new features.
* Historical "hacks" like `wasm-gc` will soon no longer be necessary, LLD
will [natively implement][gc] `--gc-sections` (better than `wasm-gc`!) which
means a postprocessor is no longer needed to show off Rust's "small wasm
binary size".
LLD is added in a pretty standard way to rustc right now. A new rustbuild target
was defined for building LLD, and this is executed when a compiler's sysroot is
being assembled. LLD is compiled against the LLVM that we've got in tree, which
means we're currently on the `release_60` branch, but this may get upgraded in
the near future!
LLD is placed into rustc's sysroot in a `bin` directory. This is similar to
where `gcc.exe` can be found on Windows. This directory is automatically added
to `PATH` whenever rustc executes the linker, allowing us to define a `WasmLd`
linker which implements the interface that `wasm-ld`, LLD's frontend, expects.
Like Emscripten the LLD target is currently only enabled for Tier 1 platforms,
notably OSX/Windows/Linux, and will need to be installed manually for compiling
to wasm on other platforms. LLD is by default turned off in rustbuild, and
requires a `config.toml` option to be enabled to turn it on.
Finally the unstable `#![wasm_import_memory]` attribute was also removed as LLD
has a native option for controlling this.
[gc]: https://reviews.llvm.org/D42511
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make codegen-backends directory name configurable
This allows to parallel-install several versions of rust system-wide
Fixes #48263
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This allows to parallel-install several versions of rust system-wide
Fixes #48263
Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
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This is a re-attempt at #48192 hopefully this time with 100% less randomly
[blocking builds for 20 minutes][block]. To work around #48192 the sccache
server is started in the `run.sh` script very early on in the compilation
process.
[block]: https://github.com/rust-lang/rust/issues/48192
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Auto-toolstate management follow-up.
Tracking comment: https://github.com/rust-lang/rust/issues/45861#issuecomment-367302777
* Fixed rust-lang-nursery/rust-toolstate#1, a proper link to the PR will be included.
* Fixed rust-lang-nursery/rust-toolstate#2, a comment will be posted to the PR if the toolstate changed
* Toolstate regression will be rejected at the last week of the 6-week cycle (currently entirely date-based).
* Implemented https://internals.rust-lang.org/t/the-current-submodule-setup-is-not-tenable/6593, moved doc tests of Nomicon, Reference, Rust-by-Example and The Book to the "tools" job and thus allowed to fail like other external tools.
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Added error-format flag to x.py.
Fixes #48475
r? @Mark-Simulacrum
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The *.md at the root directory in src/doc are no longer tested, but this
should be fine since all files there are deprecated.
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This re-introduces a `Config.libdir_relative` field, now derived from
`libdir` and made relative to `prefix` if necessary.
This fixes a regression from #46592 when `--libdir` is given an absolute
path. `Builder::sysroot_libdir` should always use a relative path so
its callers don't clobber system locations, and `librustc` also asserts
that `CFG_LIBDIR_RELATIVE` is really relative.
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We'd previously assumed that these paths would be relative to the src
dir, and that for example our various CI scripts would, when calling
x.py, use `../x.py build ../src/tools/...` but this isn't the case --
they use `../x.py` without using the relevant source-relative path.
We eventually may want to make this (actually somewhat logical) change,
but this is not that time.
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Primarily for CI purposes; this is intended to avoid cases where we
update rustbuild and unintentionally make CI stop running some builds to
the arguments being passed no longer applying for some reason.
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Implement excluding a build-step via --exclude
First step to fixing https://github.com/rust-lang/rust/issues/47911. This doesn't change any CI configuration, but implements what I believe necessary to make that feasible in rustbuild.
In theory this should be sufficient to allow someone to open a PR against .travis.yml and appveyor.yml which splits the Windows 32-bit tests and maybe the OS X tests into multiple builders (depending on what our cost-concerns are) to reduce runtimes.
r? @alexcrichton
cc @kennytm
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This reverts commit 64a8730e171367e4979cd9c25f0e0fdc2c157446.
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Some Steps are by-default run but don't have any paths associated with
them. We need to have at least one PathSet per each Step, though, so we
add an empty one on calls to `never()`.
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Previously, a Step would be able to tell on its own when it was invoked
"by-default" (that is, `./x.py test` was called instead of `./x.py test
some/path`). This commit replaces that functionality, invoking each Step
with each of the paths it has specified as "should be invoked by."
For example, if a step calls `path("src/tools/cargo")` and
`path("src/doc/cargo")` then it's make_run will be called twice, with
"src/tools/cargo" and "src/doc/cargo." This makes it so that default
handling logic is in builder, instead of spread across various Steps.
However, this meant that some Step specifications needed to be updated,
since for example `rustdoc` can be built by `./x.py build
src/librustdoc` or `./x.py build src/tools/rustdoc`. A `PathSet`
abstraction is added that handles this: now, each Step can not only list
`path(...)` but also `paths(&[a, b, ...])` which will make it so that we
don't invoke it with each of the individual paths, instead invoking it
with the first path in the list (though this shouldn't be depended on).
Future work likely consists of implementing a better/easier way for a
given Step to work with "any" crate in-tree, especially those that want
to run tests, build, or check crates in the std, test, or rustc crate
trees. Currently this is rather painful to do as most of the logic is
duplicated across should_run and make_run. It seems likely this can be
abstracted away into builder somehow.
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fix typos in src/{bootstrap,ci,etc,lib{backtrace,core,fmt_macros}}
via codespell
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rustbuild: Pass `ccache` to build scripts
Right now the ccache setting is only used for LLVM, but this tweaks it to also
be used for build scripts so C++ builds like `librustc_llvm` can be a bit
speedier.
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Right now the ccache setting is only used for LLVM, but this tweaks it to also
be used for build scripts so C++ builds like `librustc_llvm` can be a bit
speedier.
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Dist builds should always be as fast as we can make them, and since
those run on CI we don't care quite as much for the build being somewhat
slower. As such, we don't automatically enable ThinLTO on builds for the
dist builders.
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Right now this directory is located under:
$sysroot/lib/rustlib/$target/lib/codegen-backends
but after seeing what we do in a few other places it seems that a more
appropriate location would be:
$sysroot/lib/rustlib/$target/codegen-backends
so this commit moves it!
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Fixes #47658.
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This currently only supports a limited subset of the full compilation,
but is likely 90% of what people will want and is possible without
building a full compiler (i.e., running LLVM). In theory, this means
that contributors who don't want to build LLVM now have an easy way to
compile locally, though running tests won't work.
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Rollup of 6 pull requests
- Successful merges: #47250, #47313, #47398, #47468, #47471, #47520
- Failed merges:
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This'll probably have a bunch of build errors, so let's try and head those off
and find them sooner rather than later!
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Test rustdoc js
Add tests for the rustdoc search. It was heavily required because of all the recent breaking changes that happened while I went through improvements in doc search (add search in/for generic search for example).
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Adding RBE as a submodule #46194
Adding RBE as a submodule to start issue #46194.
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These no longer work now that Cargo changes the cwd of rustc while it's running.
Instead use an absolute path that's set by rustbuild.
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* Bump the release version to 1.25
* Bump the bootstrap compiler to the recent beta
* Allow using unstable rustdoc features on beta - this fix has been applied to
the beta branch but needed to go to the master branch as well.
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Run the miri test suite on the aux builder and travis
Reopen of #38350
see https://github.com/rust-lang/rust/pull/43340#issuecomment-316940762 for earlier discussion
Rationale for running miri's test suite in rustc's CI is that miri currently contains many features that we want in const eval in the future, and these features would break if the test suite is not run.
fixes #44077
r? @nikomatsakis
cc @eddyb
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