ci:macos: hint gfortran-10 needed

Author: scivision

.github/workflows/ci_cmake.yml

@@ -30,7 +30,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - run: cmake --preset=make
+    - run: cmake --preset=makegcc10
     - run: cmake --build build --parallel
     - run: ctest --parallel 2 --output-on-failure
       working-directory: build

.github/workflows/ci_meson.yml

@@ -24,6 +24,11 @@ jobs:
 
   macos:
     runs-on: macos-latest
+    env:
+      CC: gcc-10
+      CXX: g++-10
+      FC: gfortran-10
+
     steps:
     - uses: actions/checkout@v2
     - uses: actions/setup-python@v2