name: Test build process

on:
  push:
    paths-ignore:
      - 'README.md'
      - 'doc'
      - 'themes'

jobs:
  ubuntu-20_04:

    runs-on: ubuntu-20.04

    steps:
      - name: Checkout repo
        uses: actions/checkout@v3

      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install build-essential llvm clang meson scdoc \
          ninja-build libfreetype-dev libharfbuzz-dev libcairo-dev \
          libpango1.0-dev libwayland-dev wayland-protocols libxkbcommon-dev \
          python3-pip

          sudo pip3 install --upgrade meson

      # The version of GCC on Ubuntu 20.04 is too old to recognise
      # [[attribute]] syntax, so skip the build there.
      #
      # Additionally, clang will raise unknown attribute errors, so don't
      # enable werror.

      - name: Set clang as default compiler
        run: sudo update-alternatives --set cc $(which clang)

      - name: Clang LTO build
        run: |
          meson build
          ninja -C build test
          rm -rf build

      - name: Clang non-LTO build
        run: |
          meson build
          meson configure build -Db_lto=false
          ninja -C build test
          rm -rf build

  ubuntu-22_04:

    runs-on: ubuntu-22.04

    steps:
      - name: Checkout repo
        uses: actions/checkout@v3

      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install build-essential llvm clang meson scdoc \
          ninja-build libfreetype-dev libharfbuzz-dev libcairo-dev \
          libpango1.0-dev libwayland-dev wayland-protocols libxkbcommon-dev \
          python3-pip

          sudo pip3 install --upgrade meson

      - name: GCC LTO build
        run: |
          meson build
          meson configure build -Dwerror=true
          ninja -C build test
          rm -rf build

      - name: GCC non-LTO build
        run: |
          meson build
          meson configure build -Dwerror=true
          meson configure build -Db_lto=false
          ninja -C build test
          rm -rf build

      - name: Set clang as default compiler
        run: sudo update-alternatives --set cc $(which clang)

      - name: Clang LTO build
        run: |
          meson build
          meson configure build -Dwerror=true
          ninja -C build test
          rm -rf build

      - name: Clang non-LTO build
        run: |
          meson build
          meson configure build -Dwerror=true
          meson configure build -Db_lto=false
          ninja -C build test
          rm -rf build