cmake为语言设定标准

​​代码在git​​

CXX_STANDARD 14

# set minimum cmake version
cmake_minimum_required(VERSION 3.5 FATAL_ERROR)

# project name and language
project(recipe-09 LANGUAGES CXX)

set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)

add_library(animals
  SHARED
    Animal.cpp
    Animal.hpp
    Cat.cpp
    Cat.hpp
    Dog.cpp
    Dog.hpp
    Factory.hpp
  )

set_target_properties(animals
  PROPERTIES
    CXX_STANDARD 14
    CXX_EXTENSIONS OFF
    CXX_STANDARD_REQUIRED ON
    POSITION_INDEPENDENT_CODE 1
  )

add_executable(animal-farm animal-farm.cpp)

set_target_properties(animal-farm
  PROPERTIES
    CXX_STANDARD 14
    CXX_EXTENSIONS OFF
    CXX_STANDARD_REQUIRED ON
  )

target_link_libraries(animal-farm animals)