Usage

This directory contains a skylark rule to generate the toolchain configs. See README.md under the root directory for the definition of toolchain configs.

For a given version of Bazel, the docker_toolchain_autoconfig rule will:

• build the execution container image,
• install Bazel,
• build the container, and
• extract the toolchain config.

Refer to the documentation in docker_config.bzl for more details of how to execute this rule and how to extract the toolchain configs.

The BUILD file in this directory contains 3 sample docker_toolchain_autoconfig targets which use Bazel 0.7.0 to generate toolchain configs for:

• Debian8 Clang environment,
• Ubuntu Trusty GCC environment, and
• Ubuntu Xenial GCC environment.

Authentication

If you are generating toolchain configs for the first time, you will probably encounter permission issues. You can use docker-credential-gcr to enable docker to talk to gcr.io directly by executing the following commands:

gcloud components install docker-credential-gcr
docker-credential-gcr configure-docker