/rust_cxx_build_test

Primary LanguageStarlark

Rust Bazel Universe Test

This repo is a minimal reproducible example demonstrating a crates universe bug where binaries from a crate are not exposed.

Reproduce

Start by doing a:

$ bazel build @crate_index//:cxxbridge-cmd

This should build an .rlib file that you can link against. Note that the crate built is not a library but a binary. You can confirm this by looking at the contents of bazel-bin/external/crate_index__cxxbridge-cmd-1.0.79.

However, if you look at the contents of bazel-rust-bazel-universe-test/external/crate_index/BUILD.cxxbridge-cmd-1.0.79.bazel, you'll notice that there's a rust_binary target called cxxbridge__bin which seems to point at the appropriate binary. Howver, the bazel-rust-bazel-universe-test/external/crate_index/defs.bzl file contains this segment:

_NORMAL_DEPENDENCIES = {
    "": {
        _COMMON_CONDITION: {
            "cxxbridge-cmd": "@crate_index__cxxbridge-cmd-1.0.79//:cxxbridge_cmd",
        },
    },
}

Showing that only the library, :cxxbridge_cmd is being exposed.