| commit | f2e50e72ff060f3ff0fea3376808027a01865e2a | [log] [tgz] |
|---|---|---|
| author | Devin Jeanpierre <jeanpierreda@google.com> | Mon Oct 02 13:29:28 2023 -0700 |
| committer | Copybara-Service <copybara-worker@google.com> | Mon Oct 02 13:30:26 2023 -0700 |
| tree | d8f5eb8275cd0072dcffaf3491258e71a2eb335c | |
| parent | 199d969cc3d2ddd8bb75c8eb23d1cd7d2371e9e5 [diff] |
Prepare `CcBindingsFromRustInfo` for round-tripped interop. Specifically, allow for multiple headers per crate, and move it to a separate bazel file which we can use from rs_bindings_from_cc. This doesn't otherwise do anything -- the binary itself will not accept multiple headers until unknown commit is released (it'll just pick one arbitrarily), and we do not actually _populate_ it with multiple headers (and won't until release), but this change is relatively standalone and helps keeps the changelists small. PiperOrigin-RevId: 570161088 Change-Id: I7c250cc9d3b7b7a32d9097d5db2518e43073b224
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