name: Configure

on:
  workflow_dispatch:
  pull_request:
  push:
    branches:
      - master
      - stable
      - v*

jobs:
  cmake:
    strategy:
      fail-fast: false
      matrix:
        python:
        - 2.7
        - 3.8

    name: CMake ${{ matrix.cmake }} Python ${{ matrix.python }} on ubuntu
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2

    - name: Setup Python ${{ matrix.python }}
      uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python }}

    - name: Prepare env
      run: python -m pip install -r tests/requirements.txt

    - name: Make build directories
      run: |
        mkdir build3.7
        mkdir build3.11
        mkdir build3.18

    - name: Setup CMake 3.7
      uses: jwlawson/actions-setup-cmake@v1.3
      with:
        cmake-version: 3.7

    - name: Configure 3.7
      working-directory: build3.7
      run: >
        cmake ..
        -DPYBIND11_WERROR=ON
        -DDOWNLOAD_CATCH=ON
        -DPYTHON_EXECUTABLE=$(python -c "import sys; print(sys.executable)")

    - name: Setup CMake 3.11
      uses: jwlawson/actions-setup-cmake@v1.3
      with:
        cmake-version: 3.11

    - name: Configure 3.11
      working-directory: build3.11
      run: >
        cmake ..
        -DPYBIND11_WERROR=ON
        -DDOWNLOAD_CATCH=ON
        -DPYTHON_EXECUTABLE=$(python -c "import sys; print(sys.executable)")

    - name: Setup CMake 3.18
      uses: jwlawson/actions-setup-cmake@v1.3
      with:
        cmake-version: 3.18

    - name: Configure 3.18
      working-directory: build3.18
      run: >
        cmake ..
        -DPYBIND11_WERROR=ON
        -DDOWNLOAD_CATCH=ON
        -DPYTHON_EXECUTABLE=$(python -c "import sys; print(sys.executable)")