linux-simple-builds.yml

name: Linux builds (basic)

on: [push, pull_request]

jobs:
  build:
    name: ${{matrix.cxx}}, C++${{matrix.std}}, ${{matrix.build_type}}
    runs-on: ubuntu-24.04
    timeout-minutes: 30
    strategy:
      fail-fast: false
      matrix:
        cxx:
          - g++-14
          # Note: Older compilers (g++-12, g++-13, clang++-16, clang++-17, clang++-18)
          # don't have full C++23 stdlib support (missing std::format in libstdc++)
        build_type: [Debug] #, Release]
        std: [23]
        include:
          - cxx: g++-14
            cc: gcc-14
            other_pkgs: g++-14
            cxxflags: "-O1 -fmax-errors=5"

    steps:
    - uses: actions/checkout@v4

    - name: Verify directory structure
      run: |
        echo "Verifying directory structure..."
        echo "Contents of root directory:"
        ls -la
        echo ""
        echo "Checking essential directories:"
        for dir in src main scripts assets config docs fonts external/core; do
          if [ -d "$dir" ]; then
            echo "✓ $dir/ exists"
          else
            echo "✗ $dir/ missing"
            exit 1
          fi
        done
        echo "Directory verification complete."

    - name: Prepare environment
      env:
        TZ: "America/Los_Angeles"
      run: |
        sudo ln -snf /usr/share/zoneinfo/${TZ} /etc/localtime
        echo ${TZ} | sudo tee /etc/timezone
        sudo apt-get update -q
        sudo apt-get install -y -y --no-install-recommends \
          ${{matrix.other_pkgs}} \
          build-essential \
          xorg-dev \
          libmotif-dev \
          libfreetype6-dev \
          cmake \
          git \
          xwit \
          xfonts-base \
          xfonts-75dpi \
          xfonts-100dpi \
          tzdata \
          libcurl4-gnutls-dev

    - name: Configure build
      env:
        CC: ${{matrix.cc}}
        CXX: ${{matrix.cxx}}
        CXXFLAGS: ${{matrix.cxxflags}}
      run: |
        echo "Configuring build for ${{matrix.cxx}}..."
        cmake -S . -B _build_${{matrix.cxx}}_${{matrix.std}} \
          -DCMAKE_INSTALL_PREFIX="${PWD}/_install_${{matrix.cxx}}_${{matrix.std}}" \
          -DCMAKE_BUILD_TYPE="${{matrix.build_type}}" \
          -DCMAKE_CXX_STANDARD=${{matrix.std}} \
          -DCMAKE_CXX_EXTENSIONS=OFF

    - name: Build + install
      run: |
        echo "Building with ${{matrix.cxx}}..."
        echo "Available CPU cores: $(nproc)"
        echo "Starting build at $(date)..."

        # Run build and capture exit code
        set +e
        timeout 600 cmake --build _build_${{matrix.cxx}}_${{matrix.std}} -j4
        BUILD_EXIT_CODE=$?
        set -e

        echo "Build command completed at $(date) with exit code $BUILD_EXIT_CODE"

        if [ $BUILD_EXIT_CODE -ne 0 ]; then
          echo "Build failed with exit code $BUILD_EXIT_CODE"
          echo "Showing last 100 lines of CMake build output:"
          tail -100 _build_${{matrix.cxx}}_${{matrix.std}}/CMakeFiles/CMakeOutput.log 2>/dev/null || echo "No CMakeOutput.log found"
          echo "Showing last 100 lines of CMake error output:"
          tail -100 _build_${{matrix.cxx}}_${{matrix.std}}/CMakeFiles/CMakeError.log 2>/dev/null || echo "No CMakeError.log found"
          exit $BUILD_EXIT_CODE
        fi

        if [ -f "_build_${{matrix.cxx}}_${{matrix.std}}/vt_main" ]; then
          echo "Build appears successful, proceeding with install..."
          timeout 120 cmake --build _build_${{matrix.cxx}}_${{matrix.std}} --target install
        else
          echo "Build failed - executable not found"
          exit 1
        fi