ci.yml

# This file is based on examples in
# https://docs.github.com/en/actions/language-and-framework-guides/using-python-with-github-actions

# Note that all the "sudo" commands here appear to cause a warning message
# "sudo: setrlimit(RLIMIT_CORE): operation not permitted"
# This appears to be a known harmless annoyance:
# https://gitlab.alpinelinux.org/alpine/aports/-/issues/11122

name: CI

on: [push, pull_request]

jobs:
  CI:
    strategy:
      fail-fast: false
      matrix:
        precision: ['single', 'double']
        os: [ubuntu-latest, macos-latest]
        exclude:
          # macos with single has strange errors on github actions, even though it works on my laptop
          - precision: 'single'
            os: macos-latest

    runs-on: ${{ matrix.os }}

    name: ${{ matrix.os}}, ${{ matrix.precision }} precision

    env:
      OMPI_ALLOW_RUN_AS_ROOT: 1
      OMPI_ALLOW_RUN_AS_ROOT_CONFIRM: 1

    steps:
    # First print out lots of information. We do this in separate 
    # "name" blocks because otherwise the output gets mixed together
    # in the github actions log.
    
    - name: Print user and group id
      run: |
        set -ex
        id

    - name: PWD
      run: |
        set -ex
        pwd

    - name: ls -l
      run: |
        set -ex
        ls -l

    - name: apt-get any needed packages
      if: "contains(matrix.os, 'ubuntu')"
      run: |
        sudo apt-get update
        sudo apt-get install -y build-essential openmpi-bin libopenmpi-dev liblapack-dev git cmake libnetcdf-dev libgsl-dev
        # If at some point we need the C++ wrapper for netcdf, it is libnetcdf-c++4-dev

    - name: Get any needed packages from homebrew
      if: "contains(matrix.os, 'macos')"
      run: |
        brew install netcdf
        brew install open-mpi
        brew install gsl

    - name: Print versions
      run: |
        which mpicc
        which mpiexec
        cmake --version

    - uses: actions/checkout@v3
      # If we want submodules downloaded, uncomment the next 2 lines:
      #with:
      #  submodules: true

    - name: Print CMake version
      run: cmake --version

    - name: which python3 after python setup
      run: which python3

    - name: which pip after python setup
      run: pip --version

    - name: which pip using sudo
      run: sudo pip --version

    - name: which pip using sudo -E
      run: sudo -E pip --version

    - name: which python using sudo
      run: sudo which python3

    - name: which python using sudo -E
      run: sudo -E which python3

    - name: env after adding python
      run: env

    - name: CMake configure, double precision
      run: cmake .
      if: matrix.precision == 'double'

    - name: CMake configure, single precision
      run: cmake -DSINGLE=1 .
      if: matrix.precision == 'single'

    - name: Compile
      run: make
   
    - name: Run unit tests
      run: make test
   
    - name: Run examples, double precision
      run: |
        cd examples
        ./run_examples
      if: matrix.precision == 'double'
      
    - name: Run examples, single precision
      run: |
        cd examples
        ./run_examples_single
      if: matrix.precision == 'single'