include(FetchContent) FetchContent_Declare( Catch2 GIT_REPOSITORY https://github.com/catchorg/Catch2.git GIT_TAG v3.3.2 ) FetchContent_MakeAvailable(Catch2) find_package(Threads REQUIRED) add_executable(sio_test sio_test.cpp) target_link_libraries(sio_test PRIVATE Catch2::Catch2WithMain sioclient Threads::Threads) add_test(sioclient_test sio_test)