name: Build and run tests

on:
  pull_request:
    branches:
    - main
  push:
    branches:
    - main

jobs:
  pre_job:
    runs-on: ubuntu-latest
    outputs:
      should_skip: ${{ steps.skip_check.outputs.should_skip }}
    steps:
      - id: skip_check
        uses: fkirc/skip-duplicate-actions@v5
        with:
          paths_ignore: '["**/README.md", "docs/**", "guidelines/**"]'
          # cancel previous builds if a new commit is pushed
          cancel_others: 'true'
          # only run on push *or* pull_request, not both
          concurrent_skipping: 'same_content_newer'

  build-yosys:
    name: Reusable build
    runs-on: ${{ matrix.os }}
    needs: pre_job
    if: needs.pre_job.outputs.should_skip != 'true'
    env:
      CC: clang
    strategy:
      matrix:
        os: [ubuntu-20.04, macos-13]
      fail-fast: false
    steps:
      - name: Checkout Yosys
        uses: actions/checkout@v4

      - name: Setup environment
        uses: ./.github/actions/setup-build-env

      - name: Build
        shell: bash
        run: |
          mkdir build
          cd build
          make -f ../Makefile config-$CC
          make -f ../Makefile -j$procs

      - name: Log yosys-config output
        run: |
          ./yosys-config || true

      - name: Log yosys-config output
        run: |
          ./yosys-config || true

      - name: Compress build
        shell: bash
        run: |
          cd build
          tar -cvf ../build.tar share/ yosys yosys-*

      - name: Store build artifact
        uses: actions/upload-artifact@v4
        with:
          name: build-${{ matrix.os }}
          path: build.tar
          retention-days: 1

  test-yosys:
    name: Run tests
    runs-on: ${{ matrix.os }}
    needs: [build-yosys, pre_job]
    if: needs.pre_job.outputs.should_skip != 'true'
    env:
      CC: clang
    strategy:
      matrix:
        os: [ubuntu-20.04, macos-13]
    steps:
      - name: Checkout Yosys
        uses: actions/checkout@v4

      - name: Setup environment
        uses: ./.github/actions/setup-build-env

      - name: Get iverilog
        shell: bash
        run: |
          git clone https://github.com/steveicarus/iverilog.git
          cd iverilog
          git checkout 192b6aec96fde982e6ddcb28b346d5893aa8e874
          echo "IVERILOG_GIT=$(git rev-parse HEAD)" >> $GITHUB_ENV

      - name: Cache iverilog
        id: cache-iverilog
        uses: actions/cache@v4
        with:
          path: .local/
          key: ${{ matrix.os }}-${{ env.IVERILOG_GIT }}

      - name: Build iverilog
        if: steps.cache-iverilog.outputs.cache-hit != 'true'
        shell: bash
        run: |
          mkdir -p ${{ github.workspace }}/.local/
          cd iverilog
          autoconf
          CC=gcc CXX=g++ ./configure --prefix=${{ github.workspace }}/.local
          make -j$procs
          make install

      - name: Download build artifact
        uses: actions/download-artifact@v4
        with:
          name: build-${{ matrix.os }}

      - name: Uncompress build
        shell: bash
        run:
          tar -xvf build.tar

      - name: Log yosys-config output
        run: |
          ./yosys-config || true

      - name: Run tests
        shell: bash
        run: |
          make -j$procs test TARGETS= EXTRA_TARGETS= CONFIG=$CC

      - name: Report errors
        if: ${{ failure() }}
        shell: bash
        run: |
          find tests/**/*.err -print -exec cat {} \;

  test-docs:
    name: Run docs tests
    runs-on: ${{ matrix.os }}
    needs: [build-yosys, pre_job]
    if: needs.pre_job.outputs.should_skip != 'true'
    env:
      CC: clang
    strategy:
      matrix:
        os: [ubuntu-20.04, macos-13]
    steps:
      - name: Checkout Yosys
        uses: actions/checkout@v4

      - name: Setup environment
        uses: ./.github/actions/setup-build-env

      - name: Download build artifact
        uses: actions/download-artifact@v4
        with:
          name: build-${{ matrix.os }}

      - name: Uncompress build
        shell: bash
        run:
          tar -xvf build.tar

      - name: Log yosys-config output
        run: |
          ./yosys-config || true

      - name: Run tests
        shell: bash
        run: |
          make -C docs test -j${{ env.procs }}