libc、glibc、uclibc

libc，glibc和libc关系

https://www.cnblogs.com/saolv/p/9678030.html
https://blog.youkuaiyun.com/guangmingsky/article/details/80965694

glibc、uclibc的区别

https://blog.youkuaiyun.com/hemmingway/article/details/38870811
https://blog.youkuaiyun.com/zengwh/article/details/1482418

查看glibc版本

https://www.cnblogs.com/timwind/p/7866418.html

#include <stdio.h>
#include <gnu/libc-version.h>

int main(void)

{
  puts(gnu_get_libc_version ());
  return 0;
}