version: 2.1

commands:
  submodules:
    steps:
      - run:
          name: "Pull submodules"
          command: git submodule update --init
  llvm-source-linux:
    steps:
      - restore_cache:
          keys:
            - llvm-source-18-v1
      - run:
          name: "Fetch LLVM source"
          command: make llvm-source
      - save_cache:
          key: llvm-source-18-v1
          paths:
            - llvm-project/clang/lib/Headers
            - llvm-project/clang/include
            - llvm-project/compiler-rt
            - llvm-project/lld/include
            - llvm-project/llvm/include
  hack-ninja-jobs:
    steps:
      - run:
          name: "Hack Ninja to use less jobs"
          command: |
            echo -e '#!/bin/sh\n/usr/bin/ninja -j3 "$@"' > /go/bin/ninja
            chmod +x /go/bin/ninja
  build-binaryen-linux:
    steps:
      - restore_cache:
          keys:
            - binaryen-linux-v3
      - run:
          name: "Build Binaryen"
          command: |
            make binaryen
      - save_cache:
          key: binaryen-linux-v3
          paths:
            - build/wasm-opt
  test-linux:
    parameters:
      llvm:
        type: string
      fmt-check:
        type: boolean
        default: true
    steps:
      - checkout
      - submodules
      - run:
          name: "Install apt dependencies"
          command: |
            echo 'deb https://apt.llvm.org/bullseye/ llvm-toolchain-bullseye-<<parameters.llvm>> main' > /etc/apt/sources.list.d/llvm.list
            wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -
            apt-get update
            apt-get install --no-install-recommends -y \
                llvm-<<parameters.llvm>>-dev \
                clang-<<parameters.llvm>> \
                libclang-<<parameters.llvm>>-dev \
                lld-<<parameters.llvm>> \
                cmake \
                ninja-build
      - hack-ninja-jobs
      - build-binaryen-linux
      - restore_cache:
          keys:
            - go-cache-v4-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_PREVIOUS_BUILD_NUM }}
            - go-cache-v4-{{ checksum "go.mod" }}
      - llvm-source-linux
      - run: go install -tags=llvm<<parameters.llvm>> .
      - restore_cache:
          keys:
            - wasi-libc-sysroot-systemclang-v7
      - run: make wasi-libc
      - save_cache:
          key: wasi-libc-sysroot-systemclang-v7
          paths:
            - lib/wasi-libc/sysroot
      - when:
          condition: <<parameters.fmt-check>>
          steps:
          - run:
              # Do this before gen-device so that it doesn't check the
              # formatting of generated files.
              name: Check Go code formatting
              command: make fmt-check lint
      - run: make gen-device -j4
      - run: make smoketest XTENSA=0
      - save_cache:
          key: go-cache-v4-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_BUILD_NUM }}
          paths:
            - ~/.cache/go-build
            - /go/pkg/mod

jobs:
  test-llvm15-go118:
    docker:
      - image: golang:1.18-bullseye
    steps:
      - test-linux:
          llvm: "15"
    resource_class: large
  test-llvm18-go122:
    docker:
      - image: golang:1.22-bullseye
    steps:
      - test-linux:
          llvm: "18"
    resource_class: large

workflows:
  test-all:
    jobs:
      # This tests our lowest supported versions of Go and LLVM, to make sure at
      # least the smoke tests still pass.
      - test-llvm15-go118
      # This tests LLVM 18 support when linking against system libraries.
      - test-llvm18-go122
