cmake_minimum_required(VERSION 3.0) project(simplecrypt) set(CMAKE_AUTOMOC ON) find_package(Qt5Core CONFIG REQUIRED) set(simplecrypt_SRC simplecrypt.cpp ) # Tell CMake to create the helloworld executable add_library(simpleCrypt ${simplecrypt_SRC}) # Use the Widgets module from Qt 5. target_link_libraries(simpleCrypt Qt5::Core)