feat: add option to disable fetch externals

CMakeLists.txt

@@ -21,6 +21,12 @@ else()
     set(CCR_EXCLUDE_FROM_ALL "EXCLUDE_FROM_ALL")
 endif()
 
+option(
+      CCR_FETCH_DEPS
+      "Fetch dependencies via FetchContent."
+      On
+)
+
 option(CCR_BUILD_TESTS "Enable building the tests" ${CCR_DEFAULTOPT})
 
 if (CCR_BUILD_TESTS)
@@ -38,5 +44,15 @@ include(GNUInstallDirs)
 include(CTest)
 include(GoogleTest)
 
-add_subdirectory(external)
+if (CCR_FETCH_DEPS)
+    add_subdirectory(external)
+else()
+    find_package(CLI11 REQUIRED)
+    find_package(nlohmann_json REQUIRED)
+    find_package(GTest REQUIRED)
+    find_package(pugixml REQUIRED)
+    find_package(cucumber_messages REQUIRED)
+    find_package(cucumber_gherkin REQUIRED)
+endif()
+
 add_subdirectory(cucumber_cpp)

cucumber_cpp/library/CMakeLists.txt

@@ -29,8 +29,8 @@ target_include_directories(cucumber_cpp.library PUBLIC
 )
 
 target_link_libraries(cucumber_cpp.library PUBLIC
-    gtest
-    gmock
+    GTest::gtest
+    GTest::gmock
     cucumber_gherkin_lib
     cucumber_cpp.library.report
     cucumber_cpp.library.engine

cucumber_cpp/library/report/CMakeLists.txt

@@ -14,6 +14,6 @@ target_include_directories(cucumber_cpp.library.report PUBLIC
 )
 
 target_link_libraries(cucumber_cpp.library.report PUBLIC
-    pugixml
+    pugixml::pugixml
     cucumber_cpp.library
 )

cucumber_cpp/library/test/CMakeLists.txt

@@ -3,9 +3,9 @@ add_test(NAME cucumber_cpp.library.test COMMAND cucumber_cpp.library.test)
 
 target_link_libraries(cucumber_cpp.library.test PUBLIC
     cucumber_cpp.library
-    gtest
-    gmock
-    gmock_main
+    GTest::gtest
+    GTest::gmock
+    GTest::gmock_main
     cucumber_cpp.library.engine.test_helper
     cucumber_cpp.library.engine.test_helper.steps
 )