ci-toolchain.yml

name: CI self+toolchain
# Build Alire with `alr build` and using a toolchain installed from Alire
# The `alr` being tested is the one which is being submitted in the PR
# Toolchain is tested from `alr install` (1st build) and `alr build` (2nd
# build), so those are two different toolchain installations of the same
# toolchain. This way we not only test that alr builds itself, but that
# toolchain installations via `alr install` work as intented.

on:
  pull_request:
    paths-ignore:
      - 'doc/**'
      - '**.md'
      - '**.rst'
      - '**.txt'

jobs:

  build:

    name: ${{ matrix.os }} gcc^${{ matrix.gcc_version }}

    runs-on: ${{ matrix.os }}

    strategy:
      fail-fast: false
      matrix:
        os:
          - macos-13
          - macos-latest
          - ubuntu-22.04
          - ubuntu-latest
          - windows-latest
        gcc_version: [10, 11, 12, 13, 14]

        exclude:
          # Some combos are not supported due to missing pieces in the toolchain

          # Linking troubles on macos-13 for those gcc versions
          - os: macos-13
            gcc_version: 10
          - os: macos-13
            gcc_version: 11
          - os: macos-13
            gcc_version: 12
          - os: macos-13
            gcc_version: 13

          # No builds of gcc-10, -11, -12 that work on arm64
          - os: macos-latest
            gcc_version: 10
          - os: macos-latest
            gcc_version: 11
          - os: macos-latest
            gcc_version: 12

          # gcc-10 and -11 do not work on LTS 24.04 anymore
          - os: ubuntu-latest
            gcc_version: 10
          - os: ubuntu-latest
            gcc_version: 11

          # exclude all ubuntu-22.04 because we are only interested in two
          # older tests that are explicitly included next
          - os: ubuntu-22.04

        include:
          # Only test gcc-10 and -11 on ubuntu-22.04 (to maintain testing
          # back-compatibility, as those were being tested before)
          - os: ubuntu-22.04
            gcc_version: 10
          - os: ubuntu-22.04
            gcc_version: 11

    steps:
    - name: Check out
      uses: actions/checkout@v4
      with:
        submodules: true

    # Use a stock alr to make the latest toolchain available

    - name: Install FSF toolchain
      uses: alire-project/alr-install@v2
      with:
        crates: gnat_native^${{matrix.gcc_version}} gprbuild

    - name: Build alr with toolchain from `alr install`
      shell: bash
      run: dev/build.sh

    # We can start using the alr we just built

    - name: Select toolchain GNAT^${{matrix.gcc_version}}
      run: ./bin/alr -d -n toolchain --select gnat_native^${{matrix.gcc_version}} gprbuild

    - name: Show builder alr configuration
      run: ./bin/alr -d -n version

    - name: Verify proper toolchain used for 1st build
      shell: bash
      run: ./bin/alr -d -n version | grep 'compiled with version' | grep -q '${{ matrix.gcc_version }}'

    - name: Update dependencies
      run: ./bin/alr -d -n update

    - name: Show dependencies/pins
      run: ./bin/alr -d -n -q with --solve || ./bin/alr -n -v -d with --solve

    - name: Show build environment, with debug fallback
      run: ./bin/alr -d -n printenv || ./bin/alr -n -v -d printenv

    - name: Move ./bin to ./bin-old to allow for self-build
      shell: bash
      run: mv ./bin ./bin-old || { sleep 5s && mv ./bin ./bin-old; }
      # Windows doesn't allow to replace a running exe so the next command
      # fails otherwise. Also, this mv fails sometimes so we try twice JIC.


    - name: SELF-BUILD
      run: ./bin-old/alr -d -n build

    - name: Show built version
      run: ./bin/alr -d -n version

    - name: Verify proper toolchain used for 2nd build
      shell: bash
      run: ./bin/alr -d -n version | grep 'compiled with version' | grep -q '${{ matrix.gcc_version }}'

    # Run the testsuite with the just build alr. The testsuite picks the proper
    # alr in the ./bin/alr location.

    - name: Install Python 3.x # required by testsuite
      uses: actions/setup-python@v5
      with:
        python-version: '3.x'

    - name: Install e3
      run: pip install --upgrade -r testsuite/requirements.txt

    - name: Run testsuite # But ensure a new alr is not build
      run: scripts/ci-github.sh build=false
      shell: bash