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C++ Rules for Bazel
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Googler ae44550707 Add missing defaults for cc_toolchain 
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Add missing defaults for cc_toolchain

Fixes breakage caused by fully enumerating known attributes of a cc_toolchain without providing default values for optional arguments.

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PiperOrigin-RevId: 684719429
Change-Id: I8d031a344a65218fc925025cfef7768d123ad879
 		2024-10-10 23:37:00 -07:00
.bazelci Add testing for Bazel@HEAD and Bazel 6 2024-10-09 08:26:06 -07:00
.bcr Add bazel version 2024-10-04 13:28:28 +02:00
cc Add missing defaults for cc_toolchain 2024-10-10 23:37:00 -07:00
docs Add missing defaults for cc_toolchain 2024-10-10 23:37:00 -07:00
examples Add testing for Bazel@HEAD and Bazel 6 2024-10-09 08:26:06 -07:00
tests Fix toolchain argument ordering 2024-10-08 10:34:59 -07:00
.bazelignore Rule-based toolchain example 2024-09-06 11:08:58 -07:00
.gitignore Update ignore all bazel-generated dirs 2024-10-03 10:10:35 -07:00
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
LICENSE Internal change 2019-01-09 08:56:00 +01:00
MODULE.bazel Bump rules_cc version to 0.0.13 2024-10-09 08:46:16 -07:00
README.md Update README.md 2023-07-19 15:32:02 -07:00
WORKSPACE Add testing for Bazel@HEAD and Bazel 6 2024-10-09 08:26:06 -07:00
renovate.json Update renovate.json 2019-11-03 11:40:55 +01:00

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: