make examples more robust

Author: scivision

.github/workflows/ci_mac.yml

@@ -14,12 +14,9 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - run: brew install pkg-config netcdf ninja
+    - run: brew install gcc netcdf ninja
 
     - run: ctest -S setup.cmake -VV
-      env:
-        FC: gfortran-9
-        CC: gcc-9
 
     - name: build examples
       run: |

Examples/CMakeLists.txt

@@ -1,8 +1,13 @@
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.15)
+
+include(${CMAKE_CURRENT_SOURCE_DIR}/../cmake/policy.cmake)
+include(${CMAKE_CURRENT_SOURCE_DIR}/../cmake/compiler_find.cmake)
+
 project(nc4fortranExample
-LANGUAGES C CXX Fortran)
+LANGUAGES Fortran)
 enable_testing()
 
+# see if ncfortran is installed; build if not found
 find_package(nc4fortran CONFIG)
 
 if(nc4fortran_FOUND)