FetchContent_Declare( catch2 GIT_REPOSITORY https://github.com/catchorg/Catch2.git GIT_TAG v3.4.0) FetchContent_MakeAvailable(catch2) add_executable(dummy_tests dummy.cpp) target_compile_features(dummy_tests PRIVATE cxx_std_20) target_link_libraries(dummy_tests PRIVATE Catch2::Catch2WithMain) include(Catch) catch_discover_tests(dummy_tests)