fix is_top_level for cmake < 3.21

.github/workflows/ci.yml

@@ -3,7 +3,9 @@ name: ci
 env:
   HOMEBREW_NO_INSTALL_CLEANUP: 1
   CMAKE_BUILD_PARALLEL_LEVEL: 4
-  CTEST_PARALLEL_LEVEL: 4
+  CTEST_PARALLEL_LEVEL: 0
+  CMAKE_INSTALL_PREFIX: ~/libs
+  CMAKE_PREFIX_PATH: ~/libs
 
 on:
   push:
@@ -60,11 +62,11 @@ jobs:
         cmake
         -S example
         -B example/build
-        -DCMAKE_PREFIX_PATH=${{ github.workspace }}/build/local
         -DBUILD_SHARED_LIBS:BOOL=${{ matrix.shared }}
 
     - name: build examples
       run: cmake --build example/build
+
     - name: Test examples
       run: ctest --test-dir example/build -V
 
@@ -93,18 +95,15 @@ jobs:
     - run: cmake --install build
 
     - name: configure examples
-      run: >-
-        cmake
-        -S example
-        -B example/build
-        -DCMAKE_PREFIX_PATH=${{ github.workspace }}/build/local
-
+      run: cmake -S example -B example/build
 
     - name: build examples
       run: cmake --build example/build
+
     - name: Test examples
       run: ctest --test-dir example/build -V
 
+
   linux-coverage:
     if: github.event_name == 'release'
     needs: base
@@ -113,7 +112,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: '3.x'
 
@@ -126,7 +125,7 @@ jobs:
       run: pip install gcovr
 
     - run: cmake --preset coverage
-    - run: cmake --build --preset coverage --parallel
+    - run: cmake --build --preset coverage
 
     - name: Code coverage
       run: cmake --build --preset run-coverage

.github/workflows/ci_windows.yml

@@ -14,7 +14,10 @@ on:
 
 env:
   CMAKE_BUILD_PARALLEL_LEVEL: 4
-  CTEST_PARALLEL_LEVEL: 4
+  CTEST_PARALLEL_LEVEL: 0
+  CMAKE_INSTALL_PREFIX: libs
+  CMAKE_PREFIX_PATH: libs
+
 
 jobs:
 
@@ -40,7 +43,9 @@ jobs:
     #   run: cmake --workflow --preset debug
 
     - name: config
-      run: cmake -G "MinGW Makefiles" -DHDF5_ROOT=${{ runner.temp }}/msys64/mingw64/ -DCMAKE_BUILD_TYPE=Release --preset default
+      run: cmake -G "MinGW Makefiles" --preset default
+      env:
+        HDF5_ROOT: ${{ runner.temp }}/msys64/mingw64/
 
     - name: build
       run: cmake --build --preset default
@@ -53,7 +58,7 @@ jobs:
 # NetCDF-C packaging issue with HDF5--ignores CMAKE_MODULE_PATH and uses broken factory FindHDF5
 # and can't seem to override
     # - name: configure examples
-    #   run: cmake -S example -B example/build -DCMAKE_PREFIX_PATH=${{ runner.temp }}
+    #   run: cmake -S example -B example/build
     # - name: build Examples
     #   run: cmake --build example/build
     # - name: Test Examples

.github/workflows/oneapi-linux.yml

@@ -6,6 +6,9 @@ env:
 # https://github.com/oneapi-src/oneapi-ci/blob/master/.github/workflows/build_all.yml
   CTEST_NO_TESTS_ACTION: error
   CMAKE_BUILD_PARALLEL_LEVEL: 4
+  CTEST_PARALLEL_LEVEL: 0
+  CMAKE_INSTALL_PREFIX: ~/libs
+  CMAKE_PREFIX_PATH: ~/libs
 
 on:
   push:
@@ -64,7 +67,6 @@ jobs:
         cmake
         -S example
         -B example/build
-        -DCMAKE_PREFIX_PATH:PATH=${{ github.workspace }}/build/local
 
 # BUILD_SHARED_LIBS=false since as with any C++ / Fortran program with Intel compiler,
 # need to have GCC environment carefully set

CMakeLists.txt

@@ -32,14 +32,14 @@ if(NOT NetCDF_FOUND)
 endif()
 
 # --- code coverage
-if(${PROJECT_NAME}_COVERAGE)
+if(${PROJECT_NAME}_COVERAGE AND ${PROJECT_NAME}_IS_TOP_LEVEL)
   include(cmake/Modules/CodeCoverage.cmake)
   append_coverage_compiler_flags()
   set(COVERAGE_EXCLUDES ${PROJECT_SOURCE_DIR}/test)
 endif()
 
 # --- clang-tidy
-if(tidy AND PROJECT_IS_TOP_LEVEL)
+if(tidy AND ${PROJECT_NAME}_IS_TOP_LEVEL)
   find_program(CLANG_TIDY_EXE NAMES "clang-tidy" REQUIRED)
   set(CMAKE_C_CLANG_TIDY ${CLANG_TIDY_EXE})
 endif()

CMakePresets.json

@@ -5,7 +5,6 @@
 {
   "name": "default",
   "binaryDir": "${sourceDir}/build",
-  "installDir": "${sourceDir}/build/local",
   "cacheVariables": {
     "CMAKE_COMPILE_WARNING_AS_ERROR": true
   }

cmake/libraries.json

@@ -9,6 +9,6 @@
     "url" : "https://github.com/zlib-ng/zlib-ng/archive/refs/tags/2.1.6.tar.gz"
   },
   "hdf5": {
-    "url": "https://github.com/HDFGroup/hdf5/archive/refs/tags/hdf5-1_14_3.tar.gz"
+    "url": "https://github.com/HDFGroup/hdf5/releases/download/hdf5_1.14.4.2/hdf5-1.14.4-2.tar.gz"
   }
 }

options.cmake

@@ -4,14 +4,18 @@ option(${PROJECT_NAME}_COVERAGE "Code coverage tests")
 option(tidy "Run clang-tidy on the code")
 option(find "find NetCDF libraries" ON)
 
-
-option(${PROJECT_NAME}_BUILD_TESTING "Build tests" ${PROJECT_IS_TOP_LEVEL})
-option(CMAKE_TLS_VERIFY "Verify TLS certificates when downloading libraries" ON)
+if(CMAKE_VERSION VERSION_LESS 3.21)
+  get_property(not_top DIRECTORY PROPERTY PARENT_DIRECTORY)
+  if(not_top)
+    set(${PROJECT_NAME}_IS_TOP_LEVEL false)
+  else()
+    set(${PROJECT_NAME}_IS_TOP_LEVEL true)
+  endif()
+endif()
 
 
-if(nc4fortran_IS_TOP_LEVEL AND CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
-  set_property(CACHE CMAKE_INSTALL_PREFIX PROPERTY VALUE "${PROJECT_BINARY_DIR}/local")
-endif()
+option(${PROJECT_NAME}_BUILD_TESTING "Build tests" ${${PROJECT_NAME}_IS_TOP_LEVEL})
+option(CMAKE_TLS_VERIFY "Verify TLS certificates when downloading libraries" ON)
 
 set_property(DIRECTORY PROPERTY EP_UPDATE_DISCONNECTED true)