Use Fortran setup in workflows to access multiple compilers.

.github/workflows/test_suite_macos.yml

@@ -0,0 +1,123 @@
+# Workflow to run the FTorch test suite
+name: TestSuiteMacOS
+
+# Controls when the workflow will run
+on:
+  # Triggers the workflow on pushes to the "main" branch, i.e., PR merges
+  push:
+    branches: [ "main" ]
+
+  # Triggers the workflow on pushes to open pull requests with code changes
+  pull_request:
+    paths:
+      - '.github/workflows/test_suite_macos.yml'
+      - '**.c'
+      - '**.cpp'
+      - '**.fypp'
+      - '**.f90'
+      - '**.F90'
+      - '**.pf'
+      - '**.py'
+      - '**.sh'
+      - '**CMakeLists.txt'
+      - '**requirements.txt'
+      - '**data/*'
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# Cancel jobs running if new commits are pushed
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+# Workflow run - one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "test-suite-macos"
+  test-suite-macos:
+    # The type of runner that the job will run on
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # Newest possible gcc on macos-latest (arm64)
+          - os: macos-latest
+            toolchain: {compiler: gcc, version: 13}
+          # Oldest possible gcc on macos-latest (arm64)
+          - os: macos-latest
+            toolchain: {compiler: gcc, version: 11}
+          # Newest possible gcc on macos (x86)
+          - os: macos-15
+            toolchain: {compiler: gcc, version: 13}
+          - os: macos-13
+            toolchain: {compiler: gcc, version: 13}
+          # Newest possible intel-classic on macos
+          - os: macos-15
+            toolchain: {compiler: intel-classic, version: '2021.10'}
+          - os: macos-14
+            toolchain: {compiler: intel-classic, version: '2021.10'}
+          - os: macos-13
+            toolchain: {compiler: intel-classic, version: '2021.10'}
+          # Newest possible lfortran on macos
+          - os: macos-15
+            toolchain: {compiler: lfortran, version: '0.33.0'}
+          - os: macos-14
+            toolchain: {compiler: lfortran, version: '0.33.0'}
+          - os: macos-13
+            toolchain: {compiler: lfortran, version: '0.33.0'}
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - name: Checkout code
+        with:
+          persist-credentials: false
+        uses: actions/checkout@v4
+
+      - name: setup-fortran
+        uses: fortran-lang/setup-fortran@v1
+        with:
+          compiler: ${{ matrix.toolchain.compiler }}
+          version: ${{ matrix.toolchain.version }}
+
+      - name: check-compilers-env
+        run: ${FC}
+        env: 
+          FC: ${{ steps.setup-fortran.outputs.fc }}
+
+      - name: Install Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install PyTorch
+        run: |
+          python -m pip install --upgrade pip
+          python -m venv ftorch
+          . ftorch/bin/activate
+          pip install torch torchvision --index-url https://download.pytorch.org/whl/cpu
+
+      - name: Build FTorch
+        run: |
+          . ftorch/bin/activate
+          VN=$(python -c "import sys; print('.'.join(sys.version.split('.')[:2]))")
+          export Torch_DIR=${VIRTUAL_ENV}/lib/python${VN}/site-packages
+          export BUILD_DIR=$(pwd)/src/build
+          mkdir ${BUILD_DIR}
+          cd ${BUILD_DIR}
+          cmake .. \
+            -DPython_EXECUTABLE="$(which python)" \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_Fortran_COMPILER=${FC} \
+            -DCMAKE_C_COMPILER=${CC} \
+            -DCMAKE_CXX_COMPILER=${CXX} \
+            -DCMAKE_INSTALL_PREFIX=${BUILD_DIR} \
+            -DCMAKE_BUILD_TESTS=TRUE
+          cmake --build .
+          cmake --install .
+
+      - name: Integration tests
+        run: |
+          . ftorch/bin/activate
+          ./run_integration_tests.sh -V

.github/workflows/test_suite_ubuntu.yml

@@ -40,7 +40,21 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        std: ["f2008", "f2018"]
+        toolchain:
+          - {compiler: gcc, version: 13}
+          - {compiler: gcc, version: 12}
+          - {compiler: gcc, version: 11}
+          - {compiler: gcc, version: 10}
+          - {compiler: gcc, version: 9}
+          - {compiler: intel, version: '2024.1'}
+          - {compiler: intel-classic, version: '2021.10'}
+          - {compiler: lfortran, version: '0.33.0'}
+          - {compiler: nvidia-hpc, version: '23.11'}
+        std: ["f2008"]
+        include:
+          # Run 2018 Fortran standards on latest gcc only
+          - toolchain: {compiler: gcc, version: 13}
+            std: "f2018"
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
@@ -50,10 +64,21 @@ jobs:
           persist-credentials: false
         uses: actions/checkout@v4
 
+      - name: setup-fortran
+        uses: fortran-lang/setup-fortran@v1
+        with:
+          compiler: ${{ matrix.toolchain.compiler }}
+          version: ${{ matrix.toolchain.version }}
+
+      - name: check-compilers-env
+        run: ${FC}
+        env:
+          FC: ${{ steps.setup-fortran.outputs.fc }}
+
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.x'
+          python-version: '3.11'
 
       - name: Install PyTorch
         run: |
@@ -73,6 +98,9 @@ jobs:
           cmake .. \
             -DPython_EXECUTABLE="$(which python)" \
             -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_Fortran_COMPILER=${FC} \
+            -DCMAKE_C_COMPILER=${CC} \
+            -DCMAKE_CXX_COMPILER=${CXX} \
             -DCMAKE_INSTALL_PREFIX=${BUILD_DIR} \
             -DCMAKE_BUILD_TESTS=TRUE \
             -DCMAKE_Fortran_FLAGS="-std=${{matrix.std}}"