New CI with Github Actions

.github/CI.md

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+# CI FreeFEM
+
+Each of the subsequent sections correspond to a workflow composed of a set of
+jobs: **Release/Debug + different plateform**.  A workflow appears as `failed`
+if only one of its jobs has failed. To get more details about the failing
+configuration, click on the corresponding badge below.
+
+
+| master                                                                                                           | develop                                                                                                                         |
+|:----------------------------------------------------------------------------------------------------------------:|:-------------------------------------------------------------------------------------------------------------------------------:|
+| ![Minimal version](https://github.com/FreeFem/FreeFem-sources/actions/workflows/minimal.yml/badge.svg)           | ![Minimal version](https://github.com/FreeFem/FreeFem-sources/actions/workflows/minimal.yml/badge.svg?branch=develop)           |
+| ![Sequential version](https://github.com/FreeFem/FreeFem-sources/actions/workflows/sequential.yml/badge.svg)     | ![Sequential version](https://github.com/FreeFem/FreeFem-sources/actions/workflows/sequential.yml/badge.svg?branch=develop)     |
+| ![Full version OpenMPI](https://github.com/FreeFem/FreeFem-sources/actions/workflows/full-openmpi.yml/badge.svg) | ![Full version OpenMPI](https://github.com/FreeFem/FreeFem-sources/actions/workflows/full-openmpi.yml/badge.svg?branch=develop) |
+| ![Full version MPICH](https://github.com/FreeFem/FreeFem-sources/actions/workflows/full-mpich.yml/badge.svg)     | ![Full version MPICH](https://github.com/FreeFem/FreeFem-sources/actions/workflows/full-mpich.yml/badge.svg?branch=develop)     |
+| ![Full version MS-MPI](https://github.com/FreeFem/FreeFem-sources/actions/workflows/full-msmpi.yml/badge.svg)    | ![Full version MS-MPI](https://github.com/FreeFem/FreeFem-sources/actions/workflows/full-msmpi.yml/badge.svg?branch=develop)    |
+
+GitHub Actions workflows definition files available [here](.github/workflows).

.github/workflows/full-mpich.yml

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+# Full version of FreeFem, using MPICH installed by PETSc
+name: Full version MPICH
+
+on:
+  push:
+    branches:
+      - develop
+      - master
+
+  pull_request:
+    branches:
+      - develop
+
+  # For development phase
+  workflow_dispatch:
+
+jobs:
+  linux:
+    strategy:
+      fail-fast: false
+      matrix:
+        version: [22.04, 24.04]
+        cfg:
+        - {opts: --enable-debug}
+        - {opts: --enable-optim --enable-generic}
+
+    name: Ubuntu ${{ matrix.version }} with ${{ matrix.cfg.opts }} \
+            - ${{ github.workflow }}
+
+    runs-on: ubuntu-${{ matrix.version }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install
+        run: |
+          sudo apt update
+          sudo apt install gcc g++ gfortran m4 patch git wget cmake \
+          libhdf5-dev libgsl-dev flex bison autoconf automake \
+          autotools-dev
+
+      - name: Configure
+        run: |
+          autoreconf -i
+          ./configure --enable-download ${{ matrix.cfg.opts }} \
+          --prefix="${HOME}/freefem"
+          ./3rdparty/getall -a -o PETSc
+
+      - name: PETSc
+        run: |
+          cd 3rdparty/ff-petsc
+          make petsc-slepc
+          cd -
+          ./reconfigure
+
+      - name: Build
+        run: make -j 4
+
+      - name: Check
+        run: |
+          make check -i
+          echo "Tests failed: " $(grep :test-result examples/*/*.trs | grep FAIL | wc -l)
+          ./etc/actions/failed_tests_logs.sh
+
+      - name: Install
+        run: make install
+
+  macos:
+    strategy:
+      fail-fast: false
+      matrix:
+        version: [13, 14, 15]
+        cfg:
+        - {opts: --enable-debug}
+        - {opts: --enable-optim --enable-generic}
+
+    name: MacOS ${{ matrix.version }} with ${{ matrix.cfg.opts }} \
+      - ${{ github.workflow }}
+
+    runs-on: macos-${{ matrix.version }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      # Remove homebrew LLVM compiler, and use most recent Xcode development
+      # tools
+      - name: Set environment
+        run: |
+          if [ "${{ matrix.version }}" -eq "15" ]; then
+            echo "LLVM_VERSION=18" >> $GITHUB_ENV
+            sudo xcode-select -s /Applications/Xcode_16.2.app/Contents/Developer
+          elif [ "${{ matrix.version }}" -eq "14" ]; then
+            echo "LLVM_VERSION=15" >> $GITHUB_ENV
+            sudo xcode-select -s /Applications/Xcode_16.2.app/Contents/Developer
+          elif [ "${{ matrix.version }}" -eq "13" ]; then
+            echo "LLVM_VERSION=15" >> $GITHUB_ENV
+            sudo xcode-select -s /Applications/Xcode_15.2.app/Contents/Developer
+            echo "LDFLAGS=-Wl,-ld_classic -Wl,-commons,use_dylibs" >> $GITHUB_ENV
+          fi
+
+      - name: Install
+        run: |
+          brew install m4 git bison hdf5 wget autoconf automake
+          brew remove llvm@$LLVM_VERSION
+
+      - name: Symlink GCC & Fortran
+        run: ./etc/actions/macos/link_fortran.sh "$(uname -p)"
+
+      - name: Configure
+        run: |
+          autoreconf -i
+          ./configure --enable-download ${{ matrix.cfg.opts }} \
+          --prefix="${HOME}/freefem"
+          ./3rdparty/getall -a -o PETSc
+
+      - name: PETSc
+        run: |
+          cd 3rdparty/ff-petsc
+          make petsc-slepc
+          cd -
+          ./reconfigure
+
+      - name: Build
+        run: make -j 3
+
+      - name: Check
+        run: |
+          make check -i
+          echo "Tests failed: " $(grep :test-result examples/*/*.trs | grep FAIL | wc -l)
+          ./etc/actions/failed_tests_logs.sh
+
+      - name: Install
+        run: make install

.github/workflows/full-msmpi.yml

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+# Full version of FreeFem, using Microsoft MS-MPI
+name: Full version MS-MPI
+
+on:
+  push:
+    branches:
+      - develop
+      - master
+
+  pull_request:
+    branches:
+      - develop
+
+# For development phase
+  workflow_dispatch:
+
+jobs:
+  windows:
+    strategy:
+      fail-fast: false
+      matrix:
+        cfg:
+#        - {opts: --enable-debug}
+        - {opts: --enable-optim --enable-generic}
+
+    name: Windows Server 2022 with ${{ matrix.cfg.opts }} - ${{github.workflow}}
+    runs-on: windows-2022
+
+    defaults:
+      run:
+        shell: msys2 {0}
+
+    steps:
+      - name: Setup MPI
+        uses: mpi4py/setup-mpi@v1
+        with:
+          mpi: msmpi
+
+      - uses: msys2/setup-msys2@v2
+        with:
+          update: true
+          install: >-
+            mingw-w64-x86_64-toolchain
+            make
+            m4
+            patch
+            git
+            flex
+            bison
+            unzip
+            mingw-w64-x86_64-gcc-fortran
+            mingw-w64-x86_64-openblas
+            mingw-w64-x86_64-hdf5
+            mingw-w64-x86_64-gsl
+            autoconf
+            automake-wrapper
+            pkg-config
+            pkgfile
+            tar
+            mingw-w64-x86_64-cmake
+            mingw-w64-x86_64-msmpi
+            python
+
+      # Otherwise PETSc doesn't know which python to use and returns error at
+      # configure
+      - name: Remove packages
+        run: |
+          pacman -R --noconfirm mingw-w64-x86_64-python mingw-w64-x86_64-gdb \
+          mingw-w64-x86_64-gdb-multiarch
+
+      - uses: actions/checkout@v4
+
+      - name: Configure
+        run: |
+          autoreconf -i
+          ./configure ${{ matrix.cfg.opts }} --enable-download \
+          --enable-maintainer-mode \
+          --prefix="${HOME}/freefem" \
+          --with-mpipath="/c/Progam Files/Microsoft MPI/Bin"
+          MPICC=mpicc MPICXX=mpicxx MPIFC=mpif90
+          ./3rdparty/getall -a -o PETSc
+
+      - name: PETSc
+        run: |
+          cd 3rdparty/ff-petsc
+          make petsc-slepc
+          cd -
+          ./reconfigure
+
+      - name: Build
+        run: make -j 4
+
+      - name: Check
+        run: |
+          make check -i
+          echo "Tests failed: " $(grep :test-result examples/*/*.trs | grep FAIL | wc -l)
+          ./etc/actions/failed_tests_logs.sh

.github/workflows/full-openmpi.yml

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+# Full version of FreeFem, using OpenMPI
+name: Full version OpenMPI
+
+on:
+  push:
+    branches:
+      - develop
+      - master
+
+  pull_request:
+    branches:
+      - develop
+
+  # For development phase
+  workflow_dispatch:
+
+jobs:
+  linux:
+    strategy:
+      fail-fast: false
+      matrix:
+        version: [22.04, 24.04]
+        cfg:
+        - {opts: --enable-debug}
+        - {opts: --enable-optim --enable-generic}
+
+    name: Ubuntu ${{ matrix.version }} with ${{ matrix.cfg.opts }} \
+            - ${{ github.workflow }}
+
+    runs-on: ubuntu-${{ matrix.version }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install
+        run: |
+          sudo apt update
+          sudo apt install gcc g++ gfortran m4 patch git wget cmake \
+          libhdf5-dev libgsl-dev flex bison autoconf automake \
+          autotools-dev libopenmpi-dev
+
+      - name: Configure
+        run: |
+          autoreconf -i
+          ./configure --enable-download ${{ matrix.cfg.opts }} \
+          --prefix="${HOME}/freefem"
+          ./3rdparty/getall -a -o PETSc
+
+      - name: PETSc
+        run: |
+          cd 3rdparty/ff-petsc
+          make petsc-slepc
+          cd -
+          ./reconfigure
+
+      - name: Build
+        run: make -j 4
+
+      - name: Check
+        run: |
+          make check -i
+          echo "Tests failed: " $(grep :test-result examples/*/*.trs | grep FAIL | wc -l)
+          ./etc/actions/failed_tests_logs.sh
+
+      - name: Install
+        run: make install
+
+# No test for MacOS, the homebrew bottle open-mpi seems broken.