https://blog.csdn.net/sinat_34104446/article/details/83033510
gcc -v
参考:
https://zhuanlan.zhihu.com/p/47935258
https://cloud.tencent.com/developer/article/1627901
https://blog.csdn.net/love_hot_girl/article/details/83069629?utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromBaidu%7Edefault-4.control&dist_request_id=1331974.8122.16185558615348693&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromBaidu%7Edefault-4.control
https://blog.csdn.net/qq_21419015/article/details/81487232