examples/rust_example/build/BUILD.gn

toolchain("rust") {
  outfile = "{{target_out_dir}}/{{rustc_output_prefix}}{{crate_name}}{{rustc_output_extension}}"
  tool("rustc") {
    depfile = "{{target_out_dir}}/{{crate_name}}.d"
    command = "rustc --edition={{edition}} --crate-name {{crate_name}} {{source}} --crate-type {{crate_type}} --emit=dep-info=$depfile,link {{rustflags}} -o $outfile {{rustdeps}} {{externs}}"
    description = "RUST $outfile"
    cdylib_output_extension = ".so"
    proc_macro_output_extension = ".so"
    outputs = [
      outfile,
    ]
  }

  tool("stamp") {
    command = "touch {{output}}"
    description = "STAMP {{output}}"
  }

  tool("copy") {
    command = "cp -af {{source}} {{output}}"
    description = "COPY {{source}} {{output}}"
  }
}

config("rust_defaults") {
  rustflags = [ "-Cdebuginfo=2" ]
}