compatibility.yml

name: Test C compiler compatibility
on:
  push:
    branches-ignore:
      - devel
      # Github Merge Queue temporary branches
      - gh-readonly-queue/**

  pull_request:
    # Only consider PRs to devel
    branches:
      - devel

    # Type of events to run CI on
    types:
      - opened
      - synchronize
      - reopened
      - ready_for_review

  merge_group:
    # Test all additions to the merge queue

# Run every script action in bash
defaults:
  run:
    shell: bash

jobs:
  binaries:
    name: Build binaries with most recent GCC version
    runs-on: ubuntu-24.04
    # Don't run for draft PRs
    if: ${{ !github.event.pull_request.draft }}

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          filter: tree:0

      - name: Enable annotations
        run: echo "::add-matcher::.github/nim-problem-matcher.json"

      - name: Make GCC 14 the default
        run: |
          sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-14 10
          sudo update-alternatives --set gcc /usr/bin/gcc-14

      - name: Build compiler and tools
        run: ./koch.py all-strict

      - name: Upload workspace to artifacts
        uses: ./.github/actions/upload-compiler

  test:
    needs: [binaries]

    strategy:
      fail-fast: false

      # Parallelize testing. Refer to ``ci.yml`` for how and why this works.
      matrix:
        batch: [0, 1]
        total_batch: [2]

    name: "Test the compiler and standard library (Batch ${{ matrix.batch }})"
    runs-on: ubuntu-24.04

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          filter: tree:0

      - uses: ./.github/actions/download-compiler

      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install libc6-dbg valgrind libpcre3

      - name: Make GCC 14 the default
        run: |
          sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-14 10
          sudo update-alternatives --set gcc /usr/bin/gcc-14

      - name: Run tester
        run: ./koch.py test --batch:"$TEST_BATCH" --tryFailing --targets:c all
        env:
          TEST_BATCH: ${{ matrix.batch }}_${{ matrix.total_batch }}

      - name: Print all test errors
        if: failure()
        run: bin/nim r tools/ci_testresults

  passed:
    name: All C compatibility tests passed
    needs: [test]
    if: failure() || cancelled()
    runs-on: ubuntu-latest

    steps:
      - run: exit 1