Teach rustc to generate object files instead of a linked executable
for binary and shared library crates. This lets us skip the lengthy
Rust compilation phase when only the C++ dependencies of these crates
have changed.
This works using a Python script that replaces the linker invoked by
rustc and converts the linker command line into a rspfile that can be
used during the link phase. The script makes certain assumptions about
how rustc invokes the linker, but since we control the version of Rust
we use, we can update the script if those assumptions ever break. I've
asked the Rust developers about adding an official way to do this so
hopefully we won't need to rely on this hack in the future.
The rustc rule for Kythe has been altered to pass linker=true, somewhat
consistent with the main rustc rule, which now doesn't invoke the actual
linker either. `m xref_rust` still succeeds, but hopefully we can find
someone who knows more about the rest of the Kythe pipeline who can let
us know whether it should still work. Otherwise, let's use this CL as
an opportunity to find out whether the rest of the pipeline is happy
with linker=true, since otherwise we will find it hard to maintain the
Kythe rule in the future.
Change-Id: Ifb9c8689c1bd78c0afcf6fdfd111140d20377536
Rust snapshot must have proper suffix for androidmk to avoid conflict
with the existing modules.
Bug: 230780263
Bug: 235895567
Test: m nothing
Change-Id: I35794196553621cd722c067d7965b2a61aa351bd
The clang prebuilts now provide a single module with per-architecture
variants instead of a module per architecture.
Bug: 220019988
Test: m checkbuild
Change-Id: I39e2cf8ae14edf8510276dab38011afaef85822c
Merged-In: I39e2cf8ae14edf8510276dab38011afaef85822c
This CL adds support for the MTE memtag_heap sanitizer. This is
controlled via inclusion of an ELF note.
Bug: 170672854
Test: Heap MTE-enabled Rust test binary triggers MTE
Change-Id: I2619818785e86a94667d02b30d102c83456b7925
libtest does not need to be linked for every module type, so remove it
from the stdlibs list. Instead, link it only when building benchmarks or
tests.
Bug: 193782599
Test: cd external/rust/crates/; mma
Test: Rust tests still run correctly.
Change-Id: I536be8754da0987e09340744d9ebf668b8e734d0
Adds support for snapshotting Rust rlibs. This allows us
vendor-specific code that uses rlib-only linkage until dylib
snapshot support is added.
Bug: 184042776
Test: m nothing # new Soong tests pass
Test: Example test Rust vendor module builds
Test: m dist vendor-snapshot # includes rlibs
Change-Id: I4976d3e1efec0ee778cc97730d45be471dffb678
Adds support for platform vendor_available Rust FFI libraries and
binaries to be included in the vendor snapshot.
Because rlib and dylibs are not yet in snapshots, libstd cannot be
included in a vendor snapshot. As a result, vendor-specific Rust code
can't be guaranteed to work with the platform-provided vendor_available
modules built with a newer toolchain. For now, a check is added
indicating vendor-specific Rust code is unsupported.
This changes the linkage for vendor variants of these modules to default
to rlib linkage since dylibs cannot be included in the snapshot yet.
Bug: 184042776
Test: m nothing # new Soong tests pass
Change-Id: I502eaa4bb962eb87ff868fcf49b435f0d2f982e6
