bazel-examples

Bazel hello-world examples for C++, Go, Python, including custom toolchain setups for embedded C++ (KR260 and STM32 with ARM processors), pybind11 and gRPC server/clients running in various languages on Intel and/or ARM processors. The background and motiviation of this project can be found at bazel-discuss@.

Instructions

Download this repo

git clone https://github.com/thx123/bazel-examples.git
cd bazel-examples

Additional steps for MacOS

Ubuntu on Intel processors are supported out of the box. However, since not all C++ toolchains exist to cross-compile KR260 and STM32 targets from the MacOS, you'd have to run a docker container on Mac to build inside an Ubuntu image running on Intel processors.

1. Start a long running container based on an multi-platform image that supports both Linux and MacOS:

docker run -itd -v $(realpath .):/home/builder/workspace --name bazel-examples thx123/ubuntu-with-bazelisk:latest

More information about the Docker image can be found at dockerhub.

2. Connect to the container:

docker exec -it bazel-examples /bin/bash

Build and Test

To build and test:

bazel build //...

bazel test //...

Gitlab-Runner Integration

If your source code lives on a GitLab instance, the following can be added for CI/CD, e.g. e.g. in .gitlab-ci.yml:

stages:
  - build
  - test

.bazel-common:
  variables:
    GIT_SUBMODULE_STRATEGY: none
  before_script:
    - echo "Using ./bazel-common ..."

bazel-build:
  image:
    name: thx123/ubuntu-with-bazelisk:1.5
    entrypoint: [""]
  stage: build
  extends: .bazel-common
  script:
    - bazel --bazelrc=./cfg-bazel/bazelrc/gitlab-runner.aws.rc info
    - bazel --bazelrc=./cfg-bazel/bazelrc/gitlab-runner.aws.rc build //...

bazel-test:
  image:
    name: thx123/ubuntu-with-bazelisk:1.5
    entrypoint: [""]
  stage: test
  extends: .bazel-common
  script:
    - bazel --bazelrc=./cfg-bazel/bazelrc/gitlab-runner.aws.rc info
    - bazel --bazelrc=./cfg-bazel/bazelrc/gitlab-runner.aws.rc test //...