version: 2.1

executors:
  ubuntu_1804:
    docker:
      - image: circleci/buildpack-deps:bionic
  macos_1013:
    macos:
      xcode: "10.0.0"

commands:
  setup_ubuntu:
    description: "Setup Ubuntu environment"
    parameters:
      OTP_VERSION:
        type: string
        default: "20.3.8.23"
    steps:
      - run:
          name: Setup environment
          command: |
            sudo apt-get update \
            && sudo apt-get \
            install \
            build-essential \
            autoconf \
            libncurses5-dev
      - run:
          name: Install OTP
          command: |
            curl -fsSL -o otp-src.tar.gz https://github.com/erlang/otp/archive/OTP-<< parameters.OTP_VERSION >>.tar.gz
            tar -zxf otp-src.tar.gz --strip-components=1
            ./otp_build autoconf && ./configure && make -j$(nproc) && sudo make install

  setup_macos:
    description: "Setup macos environment"
    parameters:
      OTP_VERSION:
        type: string
        default: "20"
    steps:
      - run:
          name: Setup environment
          command: |
            brew update
            brew install erlang@<< parameters.OTP_VERSION >>
            brew link --force erlang@<< parameters.OTP_VERSION >>

  run_build:
    description: "Build"
    steps:
      - run:
          name: Build
          command: |
            make

jobs:
  ubuntu_1804_otp20:
    executor: ubuntu_1804
    steps:
      - checkout
      - setup_ubuntu
      - run_build
  ubuntu_1804_otp21:
    executor: ubuntu_1804
    steps:
      - checkout
      - setup_ubuntu:
          OTP_VERSION: "21.0"
      - run_build
  macos_1013_otp20:
    executor: macos_1013
    steps:
      - checkout
      - setup_macos
      - run_build
  macos_1013_otp21:
    executor: macos_1013
    steps:
      - checkout
      - setup_macos:
          OTP_VERSION: "21"
      - run_build

workflows:
  check:
    jobs:
      - ubuntu_1804_otp20
      - ubuntu_1804_otp21
      - macos_1013_otp20
      - macos_1013_otp21