cmake_minimum_required(VERSION 3.8) project(test_package LANGUAGES CXX) find_package(ICU REQUIRED uc) add_executable(${PROJECT_NAME} test_package.cpp) target_link_libraries(${PROJECT_NAME} PRIVATE ICU::uc) if(ICU_VERSION VERSION_LESS "75.1") target_compile_features(${PROJECT_NAME} PRIVATE cxx_std_11) else() target_compile_features(${PROJECT_NAME} PRIVATE cxx_std_17) endif()