BUILD.bazel

load("@rules_rust//rust:defs.bzl", "rust_library")

package(
    default_visibility = ["@rules_rust//ffi/rs:__subpackages__"],
)

srcs = select({
    # Windows doesn't support weak symbol linkage.
    # If someone can make this work on Windows, please do!
    # For now we will silently not supply any symbols, because it would be very messy to conditionally define the global allocator library on toolchains depending on the platform.
    "@platforms//os:windows": ["empty.rs"],
    "//conditions:default": ["global_allocator_library.rs"],
})

rust_library(
    name = "global_allocator_library",
    srcs = srcs,
    allocator_libraries = "@rules_rust//ffi/rs:empty_allocator_libraries",
    edition = "2024",
    rustc_env = {"RUSTC_BOOTSTRAP": "1"},
    rustc_flags = select({
        "//rust/settings:experimental_use_allocator_libraries_with_mangled_symbols.legacy.rg_oom": ["--cfg=rules_rust_allocator_legacy_rg_oom"],
        "//conditions:default": [],
    }),
    tags = ["manual"],
)