cmake_minimum_required(VERSION 3.1.0) project(sending_arguments LANGUAGES CXX) set(CMAKE_AUTOMOC ON) # SingleApplication base class set(QAPPLICATION_CLASS QCoreApplication) add_executable(${PROJECT_NAME} main.cpp messagereceiver.cpp messagereceiver.h main.cpp ) find_package(Qt5 COMPONENTS Core REQUIRED) add_subdirectory(../.. SingleApplication) target_link_libraries(${PROJECT_NAME} SingleApplication)