cmake_minimum_required(VERSION 2.6) set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14") #add_subdirectory(src) # directory you want to add or contains executable files add_executable(particles main.cc vector.cc compute_boundary.cc compute_verlet_integration.cc particle.cc planet.cc compute_gravity.cc csv_reader.cc particles_factory_interface.cc planets_factory.cc compute_contact.cc compute_kinetic_energy.cc csv_writer.cc system.cc compute_energy.cc compute_potential_energy.cc ping_pong_ball.cc system_evolution.cc ping_pong_balls_factory.cc compute_interaction.cc)