| commit | d476b7565b9a8d63b5ab027f9fcded49365ec31e | [log] [tgz] |
|---|---|---|
| author | Jing Lu <lujin@google.com> | Thu Jul 27 09:25:47 2023 -0700 |
| committer | Copybara-Service <copybara-worker@google.com> | Thu Jul 27 09:26:22 2023 -0700 |
| tree | d4eee18760c6e0ab18b7d85b22ddbaafbc2641fb | |
| parent | 41dd61dc3b30c3d9f76f690f7dbed3c7ab8588fb [diff] |
Crubit OSS: Don't add `//common:rust_allocator_shims` to `deps` of targets, add it as `rust_toolchain.allocator_library`. `rust_binary.experimental_use_cc_common_link` has the default value of -1 for OSS targets, which means the decision is deferred to `rust_toolchain.experimental_use_cc_common_link`, which is False by default. For rust_* targets, since rustc performs the final linking, `rust_allocator_shims` shouldn't be necessary. For cc_* targets that link in Rust code, rustc doesn't perform the final linking, and therefore these targets need `rust_allocator_shims`. Add this target as `rust_toolchain.allocator_library` to avoid having to manually add it to cc_* targets. PiperOrigin-RevId: 551553185 Change-Id: Id626cb06526f639964044acd7fdda871ae4fd316
Crubit is an experimental bidirectional bindings generator for C++ and Rust.
Please don‘t use, this is an experiment and we don’t yet know where will it take us. There will be breaking changes without warning. Unfortunately, we can't take contributions at this point.
Crubit allows for C++ code and Rust code to call each other without manually wrapping the APIs in an FFI-friendly interop layer. For example, a C++ function like this:
bool IsAbsPath(std::string_view path);
... becomes callable from Rust as if it were defined as:
pub fn IsAbsPath(path: std::string_view) -> bool {...}
Crubit automatically generates ABI-compatible bindings for structs (which can be passed both by value and by reference), functions, and methods, for a large variety of types. (Trivial types, nontrivial types, templated types, etc.)
$ apt install clang lld bazel $ git clone git@github.com:google/crubit.git $ cd crubit $ bazel build --linkopt=-fuse-ld=/usr/bin/ld.lld //rs_bindings_from_cc:rs_bindings_from_cc_impl
$ git clone https://github.com/llvm/llvm-project $ cd llvm-project $ CC=clang CXX=clang++ cmake -S llvm -B build -DLLVM_ENABLE_PROJECTS='clang' -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=install $ cmake --build build -j $ # wait... $ cmake --install build $ cd ../crubit $ LLVM_INSTALL_PATH=../llvm-project/install bazel build //rs_bindings_from_cc:rs_bindings_from_cc_impl