cmake_minimum_required(VERSION 3.0) project(test) option(BUILD_C "build hello world in C Language" OFF) option(BUILD_CXX "build hello world in CXX Language" ON) if(BUILD_C) add_executable(hello_world_c hello_world.c) endif() if(BUILD_CXX) add_executable(hello_world hello_world.cpp) endif() add_executable(test_c EXCLUDE_FROM_ALL test.c) add_executable(test_cpp EXCLUDE_FROM_ALL test.cpp)