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C++ Rules for Bazel
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Googler e221babe8d Add providers for rule-based toolchain configuration. 
Similar to the previous CL, this CL is to ensure that we agree on the relationship between each different type.

This will also allow for developing two things in parallel:
* The rules that generate these providers.
* Toolchain validation, and conversion to the cc_toolchain_config_lib providers.

PiperOrigin-RevId: 606391257
Change-Id: I9c2a9895d71ed987e85eb60f908d9833b838d9f8
 		2024-02-12 15:52:59 -08:00
.bazelci Enable `//tests/...` in CI 2023-07-08 00:29:45 +02:00
.bcr The targets in the old package were either not publicly visible or testonly dependencies and had diverged heavily from @bazel_tools. 2023-01-10 02:00:52 -08:00
cc Add providers for rule-based toolchain configuration. 2024-02-12 15:52:59 -08:00
examples Automatic code cleanup. 2023-09-18 03:04:35 -07:00
tests Fix internal breakages for `rules_cc`. 2024-02-09 09:50:57 -08:00
third_party Add support for expand_if_available for env_entry 2023-07-17 08:12:34 -07:00
tools/migration Cleanup uses of ctoolchain migration 2024-02-12 03:16:53 -08:00
.gitignore Add things needed for rules_cc to build & test in the open 2019-01-09 08:59:09 +01:00
AUTHORS Create AUTHORS 2021-03-25 11:49:43 -04:00
BUILD Introduce flag --@rules_cc//:link_extra_libs 2023-02-16 04:15:10 -08:00
CODEOWNERS Merge pull request #146 from bazelbuild:meteorcloudy-patch-1 2022-09-19 13:51:00 +00:00
CONTRIBUTING.md Add initial content of rules_cc repo 2019-01-09 08:58:14 +01:00
ISSUE_TEMPLATE.md Fix issue template 2019-02-27 01:37:03 -08:00
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WORKSPACE Update dependency io_bazel_rules_go to v0.42.0 2023-09-30 01:55:50 +00:00
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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: