cmake_minimum_required(VERSION 3.16) project(parameter) set(CMAKE_CXX_STANDARD 17) add_library(order src/Options.cpp src/Order.cpp include/Order.h src/OptionsException.cpp ) target_include_directories(order PUBLIC include) if (DEFINED ENABLE_TEST) add_executable(myTest test_main.cpp ) enable_testing() find_package(GTest REQUIRED) target_link_libraries(myTest PRIVATE GTest::GTest GTest::Main order) set(GTEST_LIB gtest gtest_main) add_test(NAME myTest COMMAND myTest) endif ()