macos.yml

name: macOS

on:
  push:
    branches:
      - master
      - v*/dev
      - ci/*
    paths:
      - '.github/workflows/macos.yml'
      - 'benchmark/**'
      - 'cmake/**'
      - 'examples/**'
      - 'include/**'
      - 'src/**'
      - 'tests/unittests/**'
      - '**/CMakeLists.txt'
  pull_request:
    branches:
      - master
      - v*/dev
      - ci/*
    paths:
      - '.github/workflows/macos.yml'
      - 'benchmark/**'
      - 'cmake/**'
      - 'examples/**'
      - 'include/**'
      - 'src/**'
      - 'tests/unittests/**'
      - '**/CMakeLists.txt'
  workflow_dispatch:

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref_name }}-${{ github.ref_type == 'branch' && github.sha }}-${{ github.event_name == 'workflow_dispatch' }}-${{ github.event_name == 'schedule' }}-${{ github.event.schedule }}
  cancel-in-progress: true

env:
  CCACHE_ABSSTDERR: true
  CCACHE_COMPRESS: true
  CCACHE_COMPRESSLEVEL: 6
  CCACHE_DIR: "/tmp/ccache"
  CCACHE_MAXSIZE: 50M
  CCACHE_NOHASHDIR: true
  CCACHE_SLOPPINESS: "pch_defines,time_macros"
  CCACHE_UNIFY: true

jobs:
  build:
    runs-on: macos-${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ 14 ]
        cxx: [ brew-clang++, clang++, g++-14, g++-13, g++-12 ]
        std: [ 17 ]

        include:
          # brew-clang++ with later standards on macos 14
          - os: 14
            cxx: brew-clang++
            std: 20
          - os: 14
            cxx: brew-clang++
            std: 23

          # macos 15 with built-in clang++ and brew-clang++
          - os: 15
            cxx: clang++
            std: 17
          - os: 15
            cxx: brew-clang++
            std: 17

    env:
      CXX: ${{ matrix.cxx }}
      OS: ${{ matrix.os }}
      CMAKE_C_COMPILER_LAUNCHER: ccache
      CMAKE_CXX_COMPILER_LAUNCHER: ccache

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Create Build Environment
        run: |
          mkdir ${{ runner.workspace }}/build
          brew install --overwrite ccache

      - name: Setup Homebrew clang
        if: ${{ matrix.cxx == 'brew-clang++' }}
        run: |
          llvm_root="$(brew --prefix llvm)"
          echo "${llvm_root}/bin" >> $GITHUB_PATH
          echo "CXX=clang++" >> $GITHUB_ENV
          echo "LDFLAGS=-Wl,-rpath,${llvm_root}" >> $GITHUB_ENV
          echo "CPPFLAGS=-isystem ${llvm_root}/include" >> $GITHUB_ENV
          echo "CXXFLAGS=-isystem ${llvm_root}/include/c++/v1" >> $GITHUB_ENV

      - name: Load ccache
        uses: actions/cache@v4
        with:
          path: ${{ env.CCACHE_DIR }}
          key: ccache-${{ github.workflow }}-macos${{ matrix.os }}-${{ matrix.cxx }}-std${{ matrix.std }}-${{ github.sha }}
          restore-keys: |
            ccache-${{ github.workflow }}-macos${{ matrix.os }}-${{ matrix.cxx }}-std${{ matrix.std }}-${{ github.ref }}
            ccache-${{ github.workflow }}-macos${{ matrix.os }}-${{ matrix.cxx }}-std${{ matrix.std }}-${{ github.base_ref }}
            ccache-${{ github.workflow }}-macos${{ matrix.os }}-${{ matrix.cxx }}-std${{ matrix.std }}

      - name: Setup ccache
        run: |
          ccache --version
          ccache --zero-stats
          ccache --show-stats
          ccache --show-config

      - name: Run CMake
        working-directory: ${{ runner.workspace }}/build
        run: |
          cmake -DSCN_CI=ON -DCMAKE_CXX_STANDARD=${{ matrix.std }} $GITHUB_WORKSPACE

      - name: Build
        working-directory: ${{ runner.workspace }}/build
        run: cmake --build . --parallel -- -k

      - name: Show ccache stats
        run: |
          ccache --show-stats

      - name: Test
        working-directory: ${{ runner.workspace }}/build
        run: ctest --output-on-failure