Use recent gcc/clang with OSX

.github/workflows/osx.yml

@@ -13,15 +13,41 @@ defaults:
 jobs:
  build:
  runs-on: macos-${{ matrix.os }}
- name: macos-${{ matrix.os }}
+ name: macos-${{ matrix.os }} ${{ matrix.sys.compiler }} ${{ matrix.sys.version }} ${{ matrix.sys.stdlib }}
  strategy:
  fail-fast: false
  matrix:
  os:
  - 12
+ sys:
+ - {compiler: clang, version: '16', config-flags: '', stdlib: 'libstdc++-13' }
+ # - {compiler: clang, version: '16', config-flags: '-DCMAKE_CXX_FLAGS=-stdlib=libc++', stdlib: 'libc++-17' }
+ - {compiler: clang, version: '17', config-flags: '', stdlib: 'libstdc++-13' }
+ # - {compiler: clang, version: '17', config-flags: '-DCMAKE_CXX_FLAGS=-stdlib=libc++', stdlib: 'libc++-17' }
+ - {compiler: gcc, version: '13', config-flags: '' }
 
  steps:
 
+ - name: Install GCC
+ if: matrix.sys.compiler == 'gcc'
+ uses: egor-tensin/setup-gcc@v1
+ with:
+ version: ${{matrix.sys.version}}
+ platform: x64
+
+ - name: Install LLVM and Clang
+ if: matrix.sys.compiler == 'clang'
+ uses: egor-tensin/setup-clang@v1
+ with:
+ version: ${{matrix.sys.version}}
+ platform: x64
+
+ - name: Install the specified standard library for clang
+ if: matrix.sys.compiler == 'clang'
+ run: sudo apt install ${{matrix.sys.stdlib}}-dev -y
+
+
+
  - name: Checkout code
  uses: actions/checkout@v3