Rust rules

• cargo_build_script

cargo_build_script

Compile and execute a rust build script to generate build attributes

This rules take the same arguments as rust_binary.

Example:

Suppose you have a crate with a cargo build script build.rs:

[workspace]/
    hello_lib/
        BUILD
        build.rs
        src/
            lib.rs

Then you want to use the build script in the following:

hello_lib/BUILD:

package(default_visibility = ["//visibility:public"])

load("@io_bazel_rules_rust//rust:rust.bzl", "rust_binary", "rust_library")
load("@io_bazel_rules_rust//cargo:cargo_build_script.bzl", "cargo_build_script")

# This will run the build script from the root of the workspace, and
# collect the outputs.
cargo_build_script(
    name = "build_script",
    srcs = ["build.rs"],
    # Data are shipped during execution.
    data = ["src/lib.rs"],
    # Environment variables passed during build.rs execution
    build_script_env = {"CARGO_PKG_VERSION": "0.1.2"},
)

rust_library(
    name = "hello_lib",
    srcs = [
        "src/lib.rs",
    ],
    deps = [":build_script"],
)

The hello_lib target will be build with the flags and the environment variables declared by the build script in addition to the file generated by it.

PARAMETERS

Name	Description	Default Value
name	-	none
crate_name	-	""
crate_features	-	[]
deps	-	[]
build_script_env	-	{}
kwargs	-	none