This patch vendors in the latest version of Cranelift, rev
026fb8d388964c7c1bace7019c4fe0d63c584560. This includes a fix for bug
1655848 (from GitHub PR #2081), as well as several other miscellaneous
changes.
Differential Revision: https://phabricator.services.mozilla.com/D85773
We need this bump for a couple of reasons:
1. It enables floating the libc crate version, which makes keeping up-to-date
with upstream changes easier.
2. It enables floating the getrandom crate version, which enables updating
getrandom to a version with less buggy behavior around the Linux
`getrandom` syscall on some architectures.
We also take this opportunity to sync up our vendored lucet with the lucet
that we use to build things in taskcluster.
Differential Revision: https://phabricator.services.mozilla.com/D85408
This lays out a Rust crate and statically links it into
`windows-default-agent.exe`. It declares a single-method API (which
will be invoked in the next commit).
Strings cross the C/C++ <-> Rust FFI boundary as null-terminated
UTF-8. (This will matter more if and when we use ETag and
If-None-Match to get 304 results.)
Errors are reported as Windows result codes, with the "customer" bit
set to encode certain classes of failure.
The bulk of the work is in implementing a
[Viaduct](https://github.com/mozilla/application-services/tree/master/components/viaduct)
backend built on top of `wininet.dll`. The motivation is that if and
when this Remote Settings Rust client grows features (say,
Content-Signature: verification), then by using Viaduct there is a
smooth path to consume the client inside Firefox itself, because
Viaduct already has a backend on top of Necko. That makes this
abstraction relatively low friction: it exists, is in-tree already,
and has a path to use in Gecko proper.
It is expected that the layer above this will handle "gracefully
failing", either open or closed; and will mirror Remote Settings
configuration to the registry so that testers can use prod/stage/dev
easily.
For follow-up:
- Configure logging to use the Windows event logger. See [Bug
1648617](https://bugzilla.mozilla.org/show_bug.cgi?id=1648617).
- Consider propagating errors into the Telemetry we send.
Differential Revision: https://phabricator.services.mozilla.com/D78579
This patch pulls in revision 1b3b2dbfd00492161032760992a8699d19b640ca of
Cranelift. This includes PR bytecodealliance/wasmtime#2042, which fixes
bug 1653502 by properly masking the shift amount in a shift incorporated
into an aarch64 arithmetic instruction.
This patch also includes various other miscellaneous Cranelift
improvements that have been merged since the last version-bump,
including some aarch64 codegen improvements.
Differential Revision: https://phabricator.services.mozilla.com/D84101
This patch updates the vendored version of Cranelift, pulling in the
reference-types support recently merged in Cranelift's PR
bytecodealliance/wasmtime#1852. Usage of this update to support reftypes
in SpiderMonkey on aarch64 is added in the subsequent commit.
Differential Revision: https://phabricator.services.mozilla.com/D83582
This patch pulls in Cranelift revision
47a218f908e6bdeb7a0fb65ed74e58a0b608080d, which incorporates several
relevant changes:
- It includes the Spectre mitigation for explicit heap bounds checks
merged in PR bytecodealliance/wasmtime#1930, resolving Bug 1648885.
- It includes the fix for an out-of-bounds subtraction on large shift
amounts merged in PR bytecodealliance/wasmtime#1954, resolving Bug
1649432.
We need to temporarily disable the `wasm/limits.js` jit-test on
Cranelift configurations because it now needs shared memory to work, and
the Cranelift backend does not support this yet. Given that this should
be ready in the next month at most (requires atomics support on AArch64,
which is currently being examined), it seems simpler to temporarily
disable the test on aarch64 than to try to disentangle the bits that
depend on shared memories explicitly.
This patch also edits the `regexp/bug1445907.js` jit-test to run only if
Wasm debugging is supported. This is needed for the test not to fail
with `--wasm-compiler=cranelift` (which disables Baseline, the only Wasm
compiler that supports debugging).
Differential Revision: https://phabricator.services.mozilla.com/D81936
Also update the update-rust.sh script in a couple ways:
- Stop copying the source for mp4parse_fallible into the tree; use crates.io
- Include submodules in mp4parse-rust checkout; needed for tests
- Exclude unnecessary build.rs from mp4parse_fallible, it was causing problems
- Update mp4rust_capi/Cargo.toml patch to exclude cdylib. It's only necessary for test_ffi and causes build problems otherwise
Differential Revision: https://phabricator.services.mozilla.com/D68139
--HG--
extra : moz-landing-system : lando
This is the skeleton for interacting with the Windows Task Scheduler, it
produces an exe that can register and unregister itself as a scheduled
task.
The schedule is to run once daily. Bug 1568287 is reserved for discussions
of other trigger patterns, possibly depending on the channel.
This uses a the Windows Event Log for logging, Bug 1343676 deals with
possibly extending that to a rotating log file.
Differential Revision: https://phabricator.services.mozilla.com/D35507
--HG--
extra : moz-landing-system : lando
CLOSED TREE
Backed out changeset 85ea1d36da66 (bug 1515451)
Backed out changeset 779bc1fa07ae (bug 1515451)
Backed out changeset 0c6771b60b76 (bug 1515451)
This is the skeleton for interacting with the Windows Task Scheduler, it
produces an exe that can register and unregister itself as a scheduled
task.
The schedule is to run once daily. Bug 1568287 is reserved for discussions
of other trigger patterns, possibly depending on the channel.
This uses a the Windows Event Log for logging, Bug 1343676 deals with
possibly extending that to a rotating log file.
Differential Revision: https://phabricator.services.mozilla.com/D35507
--HG--
extra : moz-landing-system : lando
Some crates in the dependency graph at some point depend on failure,
without disabling its default features, which means they are turned on
for m-c builds.
The default features include the backtrace features, which seems to
cause issues for some m-c builds (like the Windows one).
As we can't turn of default features easily, our next best option is to
use a patched version that doesn't have include backtrace as a default feature.
Original repository: https://github.com/rust-lang-nursery/failure
Base commit: 20f9a9e223
Forked repository: https://github.com/badboy/failure
Branch: no-default-backtrace
New commit: 64af847bc5
Steps to update after adding the patch line:
cargo update -p gkrust-shared
mach vendor rust
Differential Revision: https://phabricator.services.mozilla.com/D59357
--HG--
extra : moz-landing-system : lando
The first bug is needed to work around mingw32's broken support of static inline thread_locals.
Differential Revision: https://phabricator.services.mozilla.com/D57273
--HG--
extra : moz-landing-system : lando
This change vendors `wgpu` library in-tree and hooks up the initialization bits. It implements adapter and device initialization and adds a simple test.
Current status:
- [x] Architecture
- [x] figure out the IPC story
- [ ] move wgpu crates into a dedicated folder (let's follow up with this)
- [x] Review
- [x] WebIDL changes by DOM peers
- [x] Linux
- [x] avoid depending on spirv_cross - https://github.com/gfx-rs/wgpu/pull/371
- [x] macOS
- [x] due to cross-compiling shaders - https://github.com/gfx-rs/gfx/pull/3047
- [x] need the dependency update
- [x] stop using gcc - https://github.com/SSheldon/rust-objc-exception/pull/5
- [x] unexpected SSL header collision - https://phabricator.services.mozilla.com/D51148
- [x] undefined Metal symbols
- [x] missing webrtc headers for IPDL magic - https://phabricator.services.mozilla.com/D51558
- [x] Windows
- [x] due to "ipc-channel" not supporting Windows yet - https://github.com/servo/ipc-channel/pull/233~~
- [x] due to some exceptional stuff - https://github.com/grovesNL/spirv_cross/issues/121
- [x] undefined symbol: `D3D12CreateDevice`
- [x] d3d12.dll is not found, dxgi1_4 doesn't present
- [x] d3d11.dll and dxgi.dll need to be explicitly loaded on win32 mingw - https://github.com/gfx-rs/gfx/pull/3076
- [x] libbacktrace fails to link on win32 mingw
- [x] cc mislinking C++ standard library - https://github.com/alexcrichton/cc-rs/pull/455
- [x] Android
- [x] spirv-cross fails to build - https://github.com/KhronosGroup/SPIRV-Cross/pull/1193
Update-1:
We decided to go with IPDL mechanism instead of Rust based ipc-channel (or any alternatives), which unblocks Windows build.
Update-2:
It appears that WebGPUThreading isn't needed any more as the child thread (and its event loop) is now managed by IPDL infrastructure. This PR removes it 🎉 .
Update-3:
InstanceProvider is also removed.
Update-4:
All set, the try is green, waiting for dependent changes to go in.
Differential Revision: https://phabricator.services.mozilla.com/D49458
--HG--
rename : dom/webgpu/Adapter.cpp => dom/webgpu/ipc/WebGPUTypes.h
rename : third_party/rust/arrayvec/.cargo-checksum.json => third_party/rust/arrayvec-0.4.11/.cargo-checksum.json
rename : third_party/rust/arrayvec/Cargo.toml => third_party/rust/arrayvec-0.4.11/Cargo.toml
rename : third_party/rust/arrayvec/README.rst => third_party/rust/arrayvec-0.4.11/README.rst
rename : third_party/rust/arrayvec/benches/extend.rs => third_party/rust/arrayvec-0.4.11/benches/extend.rs
rename : third_party/rust/arrayvec/build.rs => third_party/rust/arrayvec-0.4.11/build.rs
rename : third_party/rust/arrayvec/src/array.rs => third_party/rust/arrayvec-0.4.11/src/array.rs
rename : third_party/rust/arrayvec/src/array_string.rs => third_party/rust/arrayvec-0.4.11/src/array_string.rs
rename : third_party/rust/arrayvec/src/char.rs => third_party/rust/arrayvec-0.4.11/src/char.rs
rename : third_party/rust/arrayvec/src/lib.rs => third_party/rust/arrayvec-0.4.11/src/lib.rs
rename : third_party/rust/arrayvec/src/maybe_uninit.rs => third_party/rust/arrayvec-0.4.11/src/maybe_uninit.rs
rename : third_party/rust/arrayvec/src/maybe_uninit_nodrop.rs => third_party/rust/arrayvec-0.4.11/src/maybe_uninit_nodrop.rs
rename : third_party/rust/arrayvec/src/maybe_uninit_stable.rs => third_party/rust/arrayvec-0.4.11/src/maybe_uninit_stable.rs
rename : third_party/rust/arrayvec/src/range.rs => third_party/rust/arrayvec-0.4.11/src/range.rs
rename : third_party/rust/arrayvec/tests/serde.rs => third_party/rust/arrayvec-0.4.11/tests/serde.rs
rename : third_party/rust/arrayvec/tests/tests.rs => third_party/rust/arrayvec-0.4.11/tests/tests.rs
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/atom/Cargo.toml
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/cocoa/Cargo.toml
rename : third_party/rust/core-graphics/src/lib.rs => third_party/rust/cocoa/src/lib.rs
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/colorful/Cargo.toml
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/range-alloc/Cargo.toml
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/shared_library/Cargo.toml
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/x11/Cargo.toml
extra : moz-landing-system : lando
This change vendors `wgpu` library in-tree and hooks up the initialization bits. It implements adapter and device initialization and adds a simple test.
Current status:
- [x] Architecture
- [x] figure out the IPC story
- [ ] move wgpu crates into a dedicated folder (let's follow up with this)
- [x] Review
- [x] WebIDL changes by DOM peers
- [x] Linux
- [x] avoid depending on spirv_cross - https://github.com/gfx-rs/wgpu/pull/371
- [x] macOS
- [x] due to cross-compiling shaders - https://github.com/gfx-rs/gfx/pull/3047
- [x] need the dependency update
- [x] stop using gcc - https://github.com/SSheldon/rust-objc-exception/pull/5
- [x] unexpected SSL header collision - https://bugzilla.mozilla.org/show_bug.cgi?id=1592398
- [x] undefined Metal symbols
- [x] Windows
- [x] due to "ipc-channel" not supporting Windows yet - https://github.com/servo/ipc-channel/pull/233~~
- [x] due to some exceptional stuff - https://github.com/grovesNL/spirv_cross/issues/121
- [x] undefined symbol: `D3D12CreateDevice`
- [x] d3d12.dll is not found, dxgi1_4 doesn't present
- [x] d3d11.dll and dxgi.dll need to be explicitly loaded on win32 mingw - https://github.com/gfx-rs/gfx/pull/3076
- [x] libbacktrace fails to link on win32 mingw
- [x] Android
- [x] spirv-cross fails to build - https://github.com/KhronosGroup/SPIRV-Cross/pull/1193
Update-1:
We decided to go with IPDL mechanism instead of Rust based ipc-channel (or any alternatives), which unblocks Windows build.
Update-2:
It appears that WebGPUThreading isn't needed any more as the child thread (and its event loop) is now managed by IPDL infrastructure. This PR removes it 🎉 .
Update-3:
InstanceProvider is also removed.
Update-4:
All set, the try is green, waiting for dependent changes to go in.
Differential Revision: https://phabricator.services.mozilla.com/D49458
--HG--
rename : dom/webgpu/Adapter.cpp => dom/webgpu/ipc/WebGPUTypes.h
rename : third_party/rust/arrayvec/.cargo-checksum.json => third_party/rust/arrayvec-0.4.11/.cargo-checksum.json
rename : third_party/rust/arrayvec/Cargo.toml => third_party/rust/arrayvec-0.4.11/Cargo.toml
rename : third_party/rust/arrayvec/README.rst => third_party/rust/arrayvec-0.4.11/README.rst
rename : third_party/rust/arrayvec/benches/extend.rs => third_party/rust/arrayvec-0.4.11/benches/extend.rs
rename : third_party/rust/arrayvec/build.rs => third_party/rust/arrayvec-0.4.11/build.rs
rename : third_party/rust/arrayvec/src/array.rs => third_party/rust/arrayvec-0.4.11/src/array.rs
rename : third_party/rust/arrayvec/src/array_string.rs => third_party/rust/arrayvec-0.4.11/src/array_string.rs
rename : third_party/rust/arrayvec/src/char.rs => third_party/rust/arrayvec-0.4.11/src/char.rs
rename : third_party/rust/arrayvec/src/lib.rs => third_party/rust/arrayvec-0.4.11/src/lib.rs
rename : third_party/rust/arrayvec/src/maybe_uninit.rs => third_party/rust/arrayvec-0.4.11/src/maybe_uninit.rs
rename : third_party/rust/arrayvec/src/maybe_uninit_nodrop.rs => third_party/rust/arrayvec-0.4.11/src/maybe_uninit_nodrop.rs
rename : third_party/rust/arrayvec/src/maybe_uninit_stable.rs => third_party/rust/arrayvec-0.4.11/src/maybe_uninit_stable.rs
rename : third_party/rust/arrayvec/src/range.rs => third_party/rust/arrayvec-0.4.11/src/range.rs
rename : third_party/rust/arrayvec/tests/serde.rs => third_party/rust/arrayvec-0.4.11/tests/serde.rs
rename : third_party/rust/arrayvec/tests/tests.rs => third_party/rust/arrayvec-0.4.11/tests/tests.rs
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/atom/Cargo.toml
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/cocoa/Cargo.toml
rename : third_party/rust/core-graphics/src/lib.rs => third_party/rust/cocoa/src/lib.rs
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/colorful/Cargo.toml
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/range-alloc/Cargo.toml
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/shared_library/Cargo.toml
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/x11/Cargo.toml
extra : moz-landing-system : lando
This change vendors `wgpu` library in-tree and hooks up the initialization bits. It implements adapter and device initialization and adds a simple test.
Current status:
- [x] Architecture
- [x] figure out the IPC story
- [ ] move wgpu crates into a dedicated folder (let's follow up with this)
- [x] Review
- [x] WebIDL changes by DOM peers
- [x] Linux
- [x] avoid depending on spirv_cross - https://github.com/gfx-rs/wgpu/pull/371
- [x] macOS
- [x] due to cross-compiling shaders - https://github.com/gfx-rs/gfx/pull/3047
- [x] need the dependency update
- [x] stop using gcc - https://github.com/SSheldon/rust-objc-exception/pull/5
- [x] unexpected SSL header collision - https://bugzilla.mozilla.org/show_bug.cgi?id=1592398
- [x] undefined Metal symbols
- [x] Windows
- [x] due to "ipc-channel" not supporting Windows yet - https://github.com/servo/ipc-channel/pull/233~~
- [x] due to some exceptional stuff - https://github.com/grovesNL/spirv_cross/issues/121
- [x] undefined symbol: `D3D12CreateDevice`
- [x] d3d12.dll is not found, dxgi1_4 doesn't present
- [x] d3d11.dll and dxgi.dll need to be explicitly loaded on win32 mingw - https://github.com/gfx-rs/gfx/pull/3076
- [x] libbacktrace fails to link on win32 mingw
- [x] Android
- [x] spirv-cross fails to build - https://github.com/KhronosGroup/SPIRV-Cross/pull/1193
Update-1:
We decided to go with IPDL mechanism instead of Rust based ipc-channel (or any alternatives), which unblocks Windows build.
Update-2:
It appears that WebGPUThreading isn't needed any more as the child thread (and its event loop) is now managed by IPDL infrastructure. This PR removes it 🎉 .
Update-3:
InstanceProvider is also removed.
Update-4:
All set, the try is green, waiting for dependent changes to go in.
Differential Revision: https://phabricator.services.mozilla.com/D49458
--HG--
rename : dom/webgpu/Adapter.cpp => dom/webgpu/ipc/WebGPUTypes.h
rename : third_party/rust/arrayvec/.cargo-checksum.json => third_party/rust/arrayvec-0.4.11/.cargo-checksum.json
rename : third_party/rust/arrayvec/Cargo.toml => third_party/rust/arrayvec-0.4.11/Cargo.toml
rename : third_party/rust/arrayvec/README.rst => third_party/rust/arrayvec-0.4.11/README.rst
rename : third_party/rust/arrayvec/benches/extend.rs => third_party/rust/arrayvec-0.4.11/benches/extend.rs
rename : third_party/rust/arrayvec/build.rs => third_party/rust/arrayvec-0.4.11/build.rs
rename : third_party/rust/arrayvec/src/array.rs => third_party/rust/arrayvec-0.4.11/src/array.rs
rename : third_party/rust/arrayvec/src/array_string.rs => third_party/rust/arrayvec-0.4.11/src/array_string.rs
rename : third_party/rust/arrayvec/src/char.rs => third_party/rust/arrayvec-0.4.11/src/char.rs
rename : third_party/rust/arrayvec/src/lib.rs => third_party/rust/arrayvec-0.4.11/src/lib.rs
rename : third_party/rust/arrayvec/src/maybe_uninit.rs => third_party/rust/arrayvec-0.4.11/src/maybe_uninit.rs
rename : third_party/rust/arrayvec/src/maybe_uninit_nodrop.rs => third_party/rust/arrayvec-0.4.11/src/maybe_uninit_nodrop.rs
rename : third_party/rust/arrayvec/src/maybe_uninit_stable.rs => third_party/rust/arrayvec-0.4.11/src/maybe_uninit_stable.rs
rename : third_party/rust/arrayvec/src/range.rs => third_party/rust/arrayvec-0.4.11/src/range.rs
rename : third_party/rust/arrayvec/tests/serde.rs => third_party/rust/arrayvec-0.4.11/tests/serde.rs
rename : third_party/rust/arrayvec/tests/tests.rs => third_party/rust/arrayvec-0.4.11/tests/tests.rs
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/atom/Cargo.toml
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/cocoa/Cargo.toml
rename : third_party/rust/core-graphics/src/lib.rs => third_party/rust/cocoa/src/lib.rs
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/colorful/Cargo.toml
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/range-alloc/Cargo.toml
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/shared_library/Cargo.toml
rename : third_party/rust/core-graphics/Cargo.toml => third_party/rust/x11/Cargo.toml
extra : moz-landing-system : lando
The current coreaudio-sys in gecko is a custom 0.2.2 version that used
to avoid the cross-compiling issue mentioned in bug 1569003. The issue
has been fixed in the coreaudio-sys 0.2.3, so we should follow the
upstream instead of using a custom version. As a result, the
coreaudio-sys would generate API bindings based on the MacOS SDK defined
in the build settings.
Differential Revision: https://phabricator.services.mozilla.com/D50531
--HG--
extra : moz-landing-system : lando
All the commits have been reviewed by Mozilla peers on the Cranelift repository.
Differential Revision: https://phabricator.services.mozilla.com/D42479
--HG--
extra : moz-landing-system : lando
Changes have been reviewed on the Cranelift side; this is just a bump to the
latest version.
Differential Revision: https://phabricator.services.mozilla.com/D36327
--HG--
extra : rebase_source : 66c188e223fc956562e4d4c901afa059a178da8a
extra : histedit_source : 39ce43e74dd1666440a39a25703c4f5023e0472b
We need this to be able to land the second half of the jump tables
patch, since cranelift APIs have changed.
Differential Revision: https://phabricator.services.mozilla.com/D33598
--HG--
extra : rebase_source : 00ccd0ffe14b463670912c40e81b258d45421ca3
The one optimization introduced by this is the rearrangement of branches to
prefer fallthrough whenever possible, as well as folding branches when
comparing against 0. See also
https://github.com/CraneStation/cranelift/pull/629 for details.
Differential Revision: https://phabricator.services.mozilla.com/D28512
--HG--
extra : rebase_source : f0d765a1cb1e2f7872037c18b9951077a08ae4b7
extra : histedit_source : 1a1dd95618e166705f7165c045f3b5af12f96d5b
This is the first time we pin a specific Cranelift commit hash to use in Gecko.
The target-lexicon hack is removed and instead we introduce a vendor patch for
cranelift-codegen/cranelift-wasm themselves.
Notable changes happen in top-level Cargo.toml, .cargo/config.in and
js/src/wasm/cranelift/Cargo.toml; the rest has been generated by `mach vendor
rust`.
Differential Revision: https://phabricator.services.mozilla.com/D27316
--HG--
extra : moz-landing-system : lando
This update from the official sources brings in the changes that we were
using glandium's fork for, as well as changes enabling us to tweak more
settings on Windows.
Differential Revision: https://phabricator.services.mozilla.com/D25888
--HG--
extra : moz-landing-system : lando
This adds the Firefox-required build.rs hack and reverts the commit
that added bitmasks in a way that depends on Rust 1.34 compiler
internals.
Depends on D20288
Differential Revision: https://phabricator.services.mozilla.com/D20289
--HG--
extra : moz-landing-system : lando
The fix for build bug 1512541 causes an Android build issue. The issue has been fixed upstream in LMDB's development branch, but the fix hasn't made it to LMDB's release branch. So I backported it to a branch in the mozilla/lmdb-rs repo, and this change switches to that branch to fix the Android build issue.
Differential Revision: https://phabricator.services.mozilla.com/D18767
--HG--
extra : moz-landing-system : lando
This introduces two new crates:
- jsrust, for standalone builds. This crate is compiled into a static library
libjsrust.a, which gets linked into the shared Spidermonkey library when it's
built, or into the static Spidermonkey library otherwise. This is just a
static library wrapping jsrust_shared below.
- jsrust_shared, for Gecko embedding. It just references other Rust
crates actively used in Spidermonkey. It is used to be embedded as part of
a new Rust dependency in Gecko (in gkrust).
--HG--
rename : js/src/wasm/cranelift/Cargo.toml => js/src/rust/Cargo.toml
extra : rebase_source : 84e440e3f669b73776653182cb7b006cc7febb10
extra : histedit_source : 3a67575ff6871b7dc3558c10a0251b73cedb090c
The new version of breakpad imported in bug 1309172 doesn't demangle
rust symbols at all, contrary to before, where it tried to C++ demangle
them, which worked for many, although far from all. It however has
rust-demangle support as long as it's linked against a copy of the
rust-demangle-capi crate from https://github.com/luser/rust-demangle-capi/
This imports the code from the rust-demangle-capi crate but because of
some build system complications it's not taken as-is:
- it uses rusty-cheddar, which is deprecated, to generate a C header.
- rusty-cheddar depends on syntex_syntax, which now fails to build.
- rust-demangle-capi has crate-type staticlib, which can't be used
as a dependency in a Cargo.toml. For that reason, we can't create
a fake crate that depends on it to have it vendored.
Overall, it's only a few lines of rust, and the C header can be written
manually, so this is what we do here. The created crate is named in a way
specific to dump_syms.
The build system doesn't know how to figure out what system libraries
are required to link rust static libraries, although the rust compiler
has /some/ support to get the information, so we handle that manually.
--HG--
extra : rebase_source : 9f5a9bfe2148d3040e11c7121a88e85a7f2d5c53
This includes the necessary changes for the serde replacement upgrade from
WR PR 2777 as well.
MozReview-Commit-ID: 6Q7Wjer1JHS
--HG--
extra : rebase_source : 1df561ecb5503c1cece033a959e8a7182a185072
For people who don't know how our Rust opt-level setup works--or for
people who did know and repeatedly forget--it would be good to have some
documentation in Cargo.toml pointing at the correct place.