build.yml

on:
  push:
  pull_request:
  workflow_dispatch:

jobs:
  build:
    name: Build ESMF ${{ matrix.esmf_version }} with GCC ${{ matrix.gcc_major_version }} (mpiuni)
    runs-on: ubuntu-22.04
    strategy:
      matrix:
        gcc_major_version: ["12"]
        esmf_version: ["8.3.1", "8.4.2", "8.5.0", "8.6.1"]

    steps:
      - name: Check out
        uses: actions/checkout@v4

      - name: Install dependencies
        run: sudo apt-get install -y libnetcdf-dev libnetcdff-dev
          liblapack-dev libopenblas-dev

      - name: Build ESMF
        run: |
          v="${{ matrix.esmf_version }}"  # ESMF
          gcc="${{ matrix.gcc_major_version }}"
          esmf_base=$HOME/esmf

          export ESMF_DIR=${esmf_base}/${v}-gcc-${gcc}-mpiuni
          mkdir -p $ESMF_DIR
          cd $esmf_base
          wget https://github.com/esmf-org/esmf/archive/refs/tags/v${v}.tar.gz
          tar xzvf v${v}.tar.gz --directory=/tmp && mv /tmp/esmf-${v}/* $ESMF_DIR

          export ESMF_COMPILER=gfortran
          export ESMF_LAPACK=netlib
          export ESMF_COMM=mpiuni
          export ESMF_NETCDF=nc-config

          export ESMF_F90COMPILER=gfortran-${gcc}
          export ESMF_CCOMPILER=gcc-${gcc}
          export ESMF_CXXCOMPILER=g++-${gcc}
          export ESMF_F90LINKER=/usr/bin/ld
          export ESMF_CLINKER=/usr/bin/ld
          export ESMF_CXXLINKER=/usr/bin/ld

          cd $ESMF_DIR
          make -j lib

          echo "ESMFMKFILE=${ESMF_DIR}/lib/libO/Linux.gfortran.64.mpiuni.default/esmf.mk" >> "$GITHUB_ENV"
          echo "ESMF_DIR=${ESMF_DIR}" >> "$GITHUB_ENV"

      - name: Compress ESMF dir
        run: |
          du -sh ${{ env.ESMF_DIR }}
          tar czvf ${{ env.ESMF_DIR }}.tar.gz --directory=${{ env.ESMF_DIR }} .
          du -sh ${{ env.ESMF_DIR }}.tar.gz

      - name: Upload ESMF dir as artifact
        uses: actions/upload-artifact@v4
        with:
          name: esmf-${{ matrix.esmf_version }}-gcc-${{ matrix.gcc_major_version }}-mpiuni
          path: ${{ env.ESMF_DIR }}.tar.gz
          retention-days: 1

  release:
    name: Release
    runs-on: ubuntu-22.04
    needs: build
    if: startsWith(github.ref, 'refs/tags/v')

    steps:
      - name: Download ESMF dir artifacts
        uses: actions/download-artifact@v4
        with:
          name:

      - name: List downloaded artifacts
        run: ls -Al esmf-*

      - name: Upload ESMFs to release
        uses: svenstaro/upload-release-action@v2
        with:
          repo_token: ${{ secrets.GITHUB_TOKEN }}
          file: ./esmf-*/*.tar.gz
          tag: ${{ github.ref }}
          overwrite: true
          file_glob: true