add gcc 14; use it for metapackages

Author: perazz

.github/workflows/CI.yml

@@ -27,6 +27,7 @@ jobs:
           - {compiler: gcc, version: 11}
           - {compiler: gcc, version: 12}
           - {compiler: gcc, version: 13}
+          - {compiler: gcc, version: 14}
         exclude:
           - os: macos-13
             toolchain: {compiler: gcc, version: 13}          

.github/workflows/meta.yml

@@ -49,15 +49,10 @@ jobs:
     - name: Checkout code
       uses: actions/checkout@v4
 
-    - name: (Ubuntu) setup gcc version
-      if: contains(matrix.os,'ubuntu')
-      run: |
-        echo "GCC_V=10" >> $GITHUB_ENV
-
-    - name: (macOS) setup gcc version
-      if: contains(matrix.os,'macos')
-      run: |
-        echo "GCC_V=13" >> $GITHUB_ENV
+    - name: (Ubuntu/macOS) setup gcc version
+      if: contains(matrix.os,'ubuntu') || contains(matrix.os,'macos')
+      run: |      
+        echo "GCC_V=14" >> $GITHUB_ENV
 
     - name: (Windows) Install MSYS2
       uses: msys2/setup-msys2@v2