CI: Add flang release containers

Author: bonachea

.github/workflows/build.yml

@@ -13,13 +13,25 @@ jobs:
         os: [macos-13, macos-14, ubuntu-22.04, ubuntu-24.04]
         compiler: [ gfortran ]
         version: [ 12, 13, 14 ]
-        extra_flags: [ -ffree-line-length-0 ]
+        extra_flags: [ '"-ffree-line-length-0"' ]
         include:
+          # https://hub.docker.com/r/phhargrove/llvm-flang/tags
           - os: ubuntu-24.04
             compiler: flang
-            version: new
-            container: gmao/llvm-flang:latest
-            extra_flags: -g
+            version: 20
+            extra_flags: '"-g"'
+            container: phhargrove/llvm-flang:20.1.0-1
+          - os: ubuntu-24.04
+            compiler: flang
+            version: 19
+            extra_flags: '[ "-g", "-mmlir", "-allow-assumed-rank" ]'
+            container: phhargrove/llvm-flang:19.1.1-1
+#          - os: ubuntu-24.04
+#            compiler: flang
+#            version: new
+#            container: gmao/llvm-flang:latest
+#            extra_flags: -g
+
         exclude:
           - os: ubuntu-22.04
             version: 13 # no package available
@@ -30,25 +42,34 @@ jobs:
       image: ${{ matrix.container }}
 
     env:
-      GCC_V: ${{ matrix.version }}
-      FPM_FC: ${{ matrix.compiler }}-${{ matrix.version }}
-      EXTRA_FLAGS: ${{ matrix.extra_flags }}
+      GCC_VERSION: ${{ matrix.version }}
+      FC: ${{ matrix.compiler }}
+      EXTRA_FLAGS: ${{ join(fromJSON(matrix.extra_flags), ' --flag ') }}
 
     steps:
     - name: Checkout code
       uses: actions/checkout@v4
 
     - name: Install Dependencies Ubuntu
-      if: contains(matrix.os, 'ubuntu') && 0
+      if: ${{ contains(matrix.os, 'ubuntu') && matrix.compiler == 'gfortran' && 0 }}
       run: |
         sudo apt-get update
         sudo apt list -a 'gfortran-*'
-        sudo apt install -y gfortran-${GCC_V} build-essential
-        sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-${GCC_V} 100 \
-        --slave /usr/bin/gfortran gfortran /usr/bin/gfortran-${GCC_V} \
-        --slave /usr/bin/gcov gcov /usr/bin/gcov-${GCC_V}
+        sudo apt install -y gfortran-${GCC_VERSION} build-essential
+        sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-${GCC_VERSION} 100 \
+        --slave /usr/bin/gfortran gfortran /usr/bin/gfortran-${GCC_VERSION}
+
+    - name: Setup Compilers
+      run: |
+        set -x
+        if test "$FC" = "flang" ; then \
+          echo "FPM_FC=flang-new" >> "$GITHUB_ENV" ; \
+        else \
+          echo "FPM_FC=gfortran-${GCC_VERSION}" >> "$GITHUB_ENV" ; \
+        fi
 
-    - uses: fortran-lang/setup-fpm@main
+    - name: Setup FPM
+      uses: fortran-lang/setup-fpm@main
       if: ${{ matrix.os != 'macos-14' }}
       with:
         github-token: ${{ secrets.GITHUB_TOKEN }}