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version: 2

aliases:
  - &defaults
    working_directory: ~/ghc

  # Make sure we have proper openssh before checkout: CircleCI git
  # does not check the repository out properly without it and also
  # takes 20 times longer than it should be.
  - &precheckout
    run:
      name: Install OpenSSH client
      command: |
        apt-get update -qq
        apt-get install -qy openssh-client
  - &prepare
    run:
      name: prepare-system
      command: .circleci/prepare-system.sh
  - &submodules
    run:
      name: submodules
      command: .circleci/fetch-submodules.sh
  - &buildenv
    THREADS: 9
    SKIP_PERF_TESTS: YES
    VERBOSE: 2
  - &boot
    run:
      name: Boot
      command: |
        ./boot

        cat <<EOF >> mk/build.mk
        BuildFlavour=$BUILD_FLAVOUR
        ifneq "\$(BuildFlavour)" ""
        include mk/flavours/\$(BuildFlavour).mk
        endif
        EOF
  - &configure_unix
    run:
      name: Configure
      command: ./configure
  - &configure_bsd
    run:
      name: Configure
      command: ./configure --target=x86_64-unknown-freebsd10
  - &configure_unreg
    run:
      name: Configure
      command: ./configure --enable-unregisterised
  - &make
    run:
      name: Build
      command: "make -j$THREADS"
  - &build_hadrian
    run:
      name: Build GHC using Hadrian
      command: |
        cabal update
        hadrian/build.sh -j$THREADS
  - &test
    run:
      name: Test
      command: make test SKIP_PERF_TESTS=YES
  - &slowtest
    run:
      name: Full Test
      command: make slowtest SKIP_PERF_TESTS=YES
  - &bindist
    run:
      name: Create bindist
      command: make binary-dist
      # Building bindist takes ~15 minutes without output, account for
      # that.
      no_output_timeout: "30m"
  - &collectartifacts
    run:
      name: Collect artifacts
      # We need this because CircleCI expects a path without
      # wildcards but bindist archive name is not static
      command: |
        mkdir -p /tmp/artifacts
        pwd
        find .
        cp ghc*.tar.xz /tmp/artifacts
  - &storeartifacts
    store-artifacts:
      path: /tmp/artifacts

jobs:
  "validate-x86_64-linux":
    resource_class: xlarge
    docker:
      - image: haskell:8.2
    environment:
      <<: *buildenv
    steps:
      - *precheckout
      - checkout
      - *prepare
      - *submodules
      - *boot
      - *configure_unix
      - *make
      - *test
      - *bindist
      - *collectartifacts
      - *storeartifacts

  "validate-x86_64-freebsd":
    resource_class: xlarge
    docker:
      - image: tweag/toolchain-x86_64-freebsd
    environment:
      TARGET: FreeBSD
      <<: *buildenv
    steps:
      - *precheckout
      - checkout
      - *prepare
      - *submodules
      - *boot
      - *configure_bsd
      - *make
      - *test
      - *bindist
      - *collectartifacts
      - *storeartifacts

  "validate-x86_64-darwin":
    macos:
      xcode: "9.0"
    environment:
      MACOSX_DEPLOYMENT_TARGET: "10.7"
      # Only Sierra and onwards supports clock_gettime. See #12858
      ac_cv_func_clock_gettime: "no"
    environment:
      <<: *buildenv
    steps:
      - checkout
      - *prepare
      - *submodules
      - *boot
      - *configure_unix
      - *make
      - *test
      - *bindist
      - *collectartifacts
      - *storeartifacts

  "validate-hadrian-x86_64-linux":
    resource_class: xlarge
    docker:
      - image: haskell:8.2
    environment:
      <<: *buildenv
    steps:
      - *precheckout
      - checkout
      - *prepare
      - *submodules
      - *boot
      - *configure_unix
      - *build_hadrian

  "validate-x86_64-linux-unreg":
    resource_class: xlarge
    docker:
      - image: haskell:8.2
    environment:
      <<: *buildenv
    steps:
      - *precheckout
      - checkout
      - *prepare
      - *submodules
      - *boot
      - *configure_unreg
      - *make
      - *test

  "validate-x86_64-linux-llvm":
    resource_class: xlarge
    docker:
      - image: haskell:8.2
    environment:
      <<: *buildenv
      BUILD_FLAVOUR: perf-llvm
    steps:
      - run:
          name: Install LLVM
          command: |
            apt-get update
            apt-get install -y curl xz-utils
            curl http://releases.llvm.org/5.0.0/clang+llvm-5.0.0-x86_64-linux-gnu-debian8.tar.xz | tar -xJC ..
            # See https://discuss.circleci.com/t/how-to-add-a-path-to-path-in-circle-2-0/11554/3
            echo "export PATH=`pwd`/../clang+llvm-5.0.0-x86_64-linux-gnu-debian8/bin:\$PATH" >> $BASH_ENV
      - run:
          name: Verify that llc works
          command: llc
      - *precheckout
      - checkout
      - *prepare
      - *submodules
      - *boot
      - *configure_unix
      - *make
      - *slowtest

  # Nightly build with -DDEBUG using devel2 flavour
  "validate-x86_64-linux-debug":
    resource_class: xlarge
    docker:
      - image: haskell:8.2
    environment:
      BUILD_FLAVOUR: devel2
      <<: *buildenv
    steps:
      - *precheckout
      - checkout
      - *prepare
      - *submodules
      - *boot
      - *configure_unreg
      - *make
      - *test

workflows:
  version: 2
  validate:
    jobs:
    - validate-x86_64-linux
    # FreeBSD disabled: https://github.com/haskell/unix/issues/102
    # - validate-x86_64-freebsd
    - validate-x86_64-darwin
    - validate-x86_64-linux-llvm
    - validate-hadrian-x86_64-linux

  nightly:
    triggers:
      - schedule:
          cron: "0 0 * * *"
          filters:
            branches:
              only:
                - master
    jobs:
    - validate-x86_64-linux-unreg
    - validate-x86_64-linux-llvm
    - validate-x86_64-linux-debug

notify:
  webhooks:
    - url: https://phabricator.haskell.org/harbormaster/hook/circleci/