Attempt to simplify gfortran setting for macOS

.github/workflows/build-test-wheel.yml

@@ -54,20 +54,25 @@ jobs:
       - name: Checks out repo
         uses: actions/checkout@v4
 
-      - name: Symlink gfortran for x86 macOS
-        if: matrix.os == 'macos-13'
-        run: |
-          # make sure gfortran is available
-          ln -s /usr/local/bin/gfortran-13 /usr/local/bin/gfortran
-          gfortran --version
-
-      - name: Symlink gfortran for ARM macOS
-        if: matrix.os == 'macos-14'
+#      - name: Symlink gfortran for x86 macOS
+#        if: matrix.os == 'macos-13'
+#        run: |
+#          # make sure gfortran is available
+#          ln -s /usr/local/bin/gfortran-13 /usr/local/bin/gfortran
+#          gfortran --version
+
+#      - name: Symlink gfortran for ARM macOS
+#        if: matrix.os == 'macos-14'
+#        run: |
+#          # make sure gfortran is available
+#          ln -s /opt/homebrew/bin/gfortran-13 /opt/homebrew/bin/gfortran
+#          gfortran --version
+
+      - name: Append appropriate gfortran version to PATH
+        if: (matrix.os == 'macos-13') || (matrix.os == 'macos-14')
         run: |
-          # make sure gfortran is available
-          ln -s /opt/homebrew/bin/gfortran-13 /opt/homebrew/bin/gfortran
-          gfortran --version
-
+            echo "SEARCHPATH=$(brew --prefix gfortran-13):${PATH}" >> $GITHUB_ENV
+        
       - name: Install libomp using brew
         if: (matrix.os == 'macos-13') || (matrix.os == 'macos-14')
         run: |
@@ -83,6 +88,7 @@ jobs:
         if: ${{ !(matrix.os == 'macos-14' && matrix.pyver == 'cp37') }}
         uses: pypa/[email protected]
         env:
+            PATH: ${{ env.SEARCHPATH }}
             CIBW_BUILD: ${{matrix.pyver}}-*
             CIBW_SKIP: "pp37-* cp37-* *-win32 *-manylinux_i686"
             CIBW_ARCHS_LINUX: auto