cmake_minimum_required(VERSION 3.5) project(websocket_bug LANGUAGES CXX) set(CMAKE_INCLUDE_CURRENT_DIR ON) set(CMAKE_AUTOUIC ON) set(CMAKE_AUTOMOC ON) set(CMAKE_AUTORCC ON) set(CMAKE_CXX_STANDARD 11) set(CMAKE_CXX_STANDARD_REQUIRED ON) find_package(Qt5 REQUIRED COMPONENTS Core Network WebSockets) add_executable(websocket_bug main.cpp websocket_client.cpp websocket_client.h ) target_link_libraries(websocket_bug Qt5::Core Qt5::WebSockets)