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bazel / rules_cc / 66613ac5d92d8d29e5d59db7bebefa4eea32469b
commit66613ac5d92d8d29e5d59db7bebefa4eea32469b[log] [tgz]
authorGoogler <noreply@google.com>Thu Sep 05 09:05:23 2024 -0700
committerCopybara-Service <copybara-worker@google.com>Thu Sep 05 09:06:15 2024 -0700
tree7ec1ce5e11ff4db7943d7f43434d74693342ca34
parent391170f339686b7c967a2ddbe99c077947b5c117 [diff]
Add support for implicit include directories to rule-based toolchains

BEGIN_PUBLIC

Add support for implicit include directories to rule-based toolchains

Reorients the `cc_toolchain.cxx_builtin_include_directories` attribute so it is expressed as an attribute on `cc_args` and `cc_tool` to signify that the tools or arguments imply include directories that Bazel's include path checker should allowlist. This moves the allowlist to the source of truth that implies these directories.

END_PUBLIC

PiperOrigin-RevId: 671393376
Change-Id: Ide8cae548783726835168adcd3f705028a1f4308
25 files changed
tree: 7ec1ce5e11ff4db7943d7f43434d74693342ca34
  1. .bazelci/
  2. .bcr/
  3. cc/
  4. examples/
  5. tests/
  6. third_party/
  7. tools/
  8. .gitignore
  9. AUTHORS
  10. BUILD
  11. CODEOWNERS
  12. CONTRIBUTING.md
  13. ISSUE_TEMPLATE.md
  14. LICENSE
  15. MODULE.bazel
  16. README.md
  17. renovate.json
  18. WORKSPACE
README.md

C++ rules for Bazel

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

This repository contains a 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")

http_archive(
    name = "rules_cc",
    urls = ["https://github.com/bazelbuild/rules_cc/archive/refs/tags/<VERSION>.tar.gz"],
    sha256 = "...",
)

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

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

cc_library(
    ...
)

Using the rules_cc toolchain

This repo contains an auto-detecting toolchain that expects to find tools installed on your host machine. This is non-hermetic, and may have varying behaviors depending on the versions of tools found.

There are third-party contributed hermetic toolchains you may want to investigate:

If you'd like to use the cc toolchain defined in this repo, add this to your WORKSPACE after you include rules_cc:

load("@rules_cc//cc:repositories.bzl", "rules_cc_dependencies", "rules_cc_toolchains")

rules_cc_dependencies()

rules_cc_toolchains()

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).

TLDR:

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

Contributing

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

To contribute, please read the contribution guidelines: CONTRIBUTING.md.

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