cmake_minimum_required(VERSION 3.1.0) project(helloworld VERSION 1.0.0 LANGUAGES CXX) set(CMAKE_CXX_STANDARD 11) set(CMAKE_CXX_STANDARD_REQUIRED ON) if(CMAKE_VERSION VERSION_LESS "3.7.0") set(CMAKE_INCLUDE_CURRENT_DIR ON) endif() find_package(Qt5 COMPONENTS Core Xml REQUIRED) add_executable(test-xml test-xml.cpp ) target_link_libraries(test-xml Qt5::Core Qt5::Xml) add_custom_command(TARGET test-xml POST_BUILD COMMAND test-xml COMMAND xmllint test-xml.xml )