Add optional tool_path_origin to Tools in C++ crosstool

This change adds an optional field to the C++ crosstool proto that
allows configuring the origin tool_path is relative to.

For now, the origin can be one of the following:
  - CROSSTOOL_PACKAGE: If tool_path is a relative path, it's assumed to
    be relative to the package of the crosstool top.
  - FILESYSTEM_ROOT: tool_path is an absolute path. This is checked by
  - WORKSPACE_ROOT: tool_path must be a relative path and is assumed to
    be relative to the exec-root of the workspace (similar to other

Updates bazelbuild/bazel#8438

Closes #10967.

PiperOrigin-RevId: 310142352
Change-Id: If6316ffa5d7d2713b197840b4aafb2f0cdbb0b96
1 file changed
tree: 8227253616b397787e012e25a6f7bc69800ff50d
  1. .bazelci/
  2. .gitignore
  3. BUILD
  10. cc/
  11. distro/
  12. examples/
  13. internal_deps.bzl
  14. internal_setup.bzl
  15. renovate.json
  16. tests/
  17. third_party/
  18. tools/

C++ rules for Bazel

  • Postsubmit Build status
  • Postsubmit + Current Bazel Incompatible flags Build status

This repository contains Starlark implementation of C++ rules in Bazel.

The rules are being incrementally converted from their native implementations in the Bazel source tree.

For the list of C++ rules, see the Bazel documentation.

Getting Started

There is no need to use rules from this repository just yet. If you want to use rules_cc anyway, add the following to your WORKSPACE file:

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

    name = "rules_cc",
    urls = [""],
    sha256 = "TODO",

Then, in your BUILD files, import and use the rules:

load("@rules_cc//cc:defs.bzl", "cc_library")


Migration Tools

This repository also contains migration tools that can be used to migrate your project for Bazel incompatible changes.

Legacy fields migrator

Script that migrates legacy crosstool fields into features (incompatible flag, tracking issue).


bazel run @rules_cc//tools/migration:legacy_fields_migrator -- \
  --input=my_toolchain/CROSSTOOL \


Bazel and rules_cc are the work of many contributors. We appreciate your help!

To contribute, please read the contribution guidelines:

Note that the rules_cc use the GitHub issue tracker for bug reports and feature requests only. For asking questions see: