Add cross-platform CI

Author: gistrec

.github/workflows/ci.yml

@@ -7,29 +7,22 @@ on:
     branches: [master]
 
 jobs:
-  gtest:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Install dependencies
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y libgtest-dev pkg-config
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
 
-      - name: Build tests
-        run: make gtests
+    runs-on: ${{ matrix.os }}
 
-      - name: Run tests
-        run: ./gtests --gtest_filter=*
-
-  samples:
-    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
 
-      - name: Build sample
-        run: make sample
+      - name: Configure
+        run: cmake -S . -B build -DBUILD_TESTING=ON
+
+      - name: Build
+        run: cmake --build build --config Release
 
-      - name: Run sample
-        run: ./sample
+      - name: Test
+        run: ctest --test-dir build --config Release --output-on-failure

CMakeLists.txt

@@ -15,13 +15,28 @@ target_compile_features(CppGeometryLibrary INTERFACE cxx_std_17)
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
     include(CTest)
     if(BUILD_TESTING)
-        find_package(GTest REQUIRED)
+        find_package(GTest QUIET)
+        if(NOT GTest_FOUND)
+            include(FetchContent)
+            FetchContent_Declare(
+                googletest
+                URL https://github.com/google/googletest/archive/v1.14.0.tar.gz
+                DOWNLOAD_EXTRACT_TIMESTAMP ON
+            )
+            # Prevent overriding the parent project's compiler/linker settings on Windows
+            set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+            FetchContent_MakeAvailable(googletest)
+        endif()
+
         add_executable(cpp_geometry_tests tests/Tests.cpp)
         target_link_libraries(cpp_geometry_tests
             PRIVATE CppGeometryLibrary GTest::GTest GTest::Main
         )
         add_test(NAME cpp_geometry_tests COMMAND cpp_geometry_tests)
     endif()
+
+    add_executable(cpp_geometry_sample samples/samples.cpp)
+    target_link_libraries(cpp_geometry_sample PRIVATE CppGeometryLibrary)
 endif()
 
 # Installation