cmake-windows.yml

name: Windows CMake CI

# Builds xLights with CMake + Ninja using the vendored libs (no vcpkg).
# Ninja advantages over the VS generator:
#   - CMAKE_CXX_COMPILER_LAUNCHER=sccache works natively (no cl.bat shim).
#   - Faster configure and incremental builds.
#   - Single-config — no /p:Configuration= indirection through MSBuild.
#
# curl: linked directly from the vendored lib\windows64\libcurl.dll.a
#       (CMakeLists.txt falls back to it when no .lib is present).

on:
  push:
    branches: [ master ]
    paths-ignore:
      - '.github/workflows/*.yml'
      - '.github/ISSUE_TEMPLATE/*.md'
      - 'build_scripts/**'
      - 'ci_scripts/**'
      - 'cmudict/**'
      - 'documentation/**'
      - 'download/**'
      - 'resources/**'
      - 'lib/windows/**'
      - 'lib/windows64/**'
      - 'songs/**'
      - 'TipOfDay/**'
      - 'xlDo/**'
      - '*.md'
      - '*.yml'
      - '*.txt'
      - '*.docx'
      - 'README.*'
  pull_request:
    branches: [ master ]
    paths-ignore:
      - '.github/workflows/*.yml'
      - '.github/ISSUE_TEMPLATE/*.md'
      - 'build_scripts/**'
      - 'ci_scripts/**'
      - 'cmudict/**'
      - 'documentation/**'
      - 'download/**'
      - 'resources/**'
      - 'songs/**'
      - 'TipOfDay/**'
      - 'xlDo/**'
      - '*.md'
      - '*.yml'
      - '*.txt'
      - '*.docx'
      - 'README.*'
  workflow_dispatch:

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
  
jobs:
  cmake-windows:
    name: CMake / Ninja / Windows x64
    runs-on: windows-latest

    env:
      SCCACHE_GHA_ENABLED: "true"
      BUILD_DIR: cmake_ninja

    steps:
      # ── Checkout ──────────────────────────────────────────────────────────
      - name: Checkout
        uses: actions/checkout@v4
        with:
          submodules: true

      # ── MSVC environment ──────────────────────────────────────────────────
      # Ninja drives cl.exe directly — the MSVC dev environment must be active.
      - name: Setup MSVC (x64)
        uses: ilammy/msvc-dev-cmd@v1
        with:
          arch: x64

      # ── ISPC ──────────────────────────────────────────────────────────────
      - name: Install ISPC
        uses: ispc/install-ispc-action@main
        with:
          version: 1.31.0

      # glslc (ships in the Vulkan SDK's Bin) compiles the .comp compute kernels
      # to SPIR-V headers.  The CMake Vulkan block is mandatory on Windows and
      # aborts with FATAL_ERROR if glslc is missing, so the SDK must be present
      # before Configure.  The action exports VULKAN_SDK and adds Bin to PATH, so
      # the CMakeLists find_program(glslc) HINT resolves.
      - name: Install Vulkan SDK
        uses: jakoch/install-vulkan-sdk-action@v1
        with:
          install_runtime: false
          cache: true

      # ── sccache ───────────────────────────────────────────────────────────
      # Ninja supports CMAKE_CXX_COMPILER_LAUNCHER natively — no cl.bat shim.
      - name: Setup sccache
        uses: mozilla-actions/sccache-action@v0.0.10

      - name: Configure sccache
        shell: bash
        run: |
          if ! sccache --zero-stats; then
            echo "::warning::sccache GHA backend unavailable; falling back to local disk"
            echo "SCCACHE_GHA_ENABLED=" >> "$GITHUB_ENV"
            sccache --stop-server 2>/dev/null || true
          fi

      # ── wxWidgets ─────────────────────────────────────────────────────────
      - name: Get wxWidgets HEAD SHA
        id: wx-sha
        shell: bash
        run: |
          sha=$(git ls-remote https://github.com/xLightsSequencer/wxWidgets.git HEAD \
                | cut -f1 | head -c 12)
          echo "sha=$sha" >> "$GITHUB_OUTPUT"

      - name: Cache wxWidgets
        id: cache-wx
        uses: actions/cache@v4
        with:
          path: ${{ github.workspace }}\wxWidgets
          key: wxwidgets-msvc2022-x64-ninja-${{ steps.wx-sha.outputs.sha }}

      - name: Checkout wxWidgets
        if: steps.cache-wx.outputs.cache-hit != 'true'
        uses: actions/checkout@v4
        with:
          repository: xLightsSequencer/wxWidgets
          path: wxWidgets
          submodules: recursive

      - name: Build wxWidgets (Release)
        if: steps.cache-wx.outputs.cache-hit != 'true'
        working-directory: ${{ github.workspace }}\wxWidgets
        run: msbuild /m .\build\msw\wx_vc17.sln /p:Configuration="Release" /p:Platform="x64"

      # ── Configure ─────────────────────────────────────────────────────────
      - name: Configure CMake
        shell: cmd
        run: |
          cmake -S . -B %BUILD_DIR% ^
            -G Ninja ^
            -DCMAKE_BUILD_TYPE=Release ^
            -DCMAKE_C_COMPILER=cl ^
            -DCMAKE_CXX_COMPILER=cl ^
            -DCMAKE_C_COMPILER_LAUNCHER=sccache ^
            -DCMAKE_CXX_COMPILER_LAUNCHER=sccache ^
            -DwxWidgets_ROOT_DIR=${{ github.workspace }}\wxWidgets

      # ── Build ─────────────────────────────────────────────────────────────
      - name: Build
        shell: cmd
        run: cmake --build %BUILD_DIR% --parallel 8

      - name: sccache stats
        run: sccache --show-stats

      # ── Upload artifact ───────────────────────────────────────────────────
      - name: Upload xLights exe
        uses: actions/upload-artifact@v4
        with:
          name: xLights_Exe
          path: bin\**
          retention-days: 7