RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ e927a53b41fa58573e14eccac37374d686ad3cf7

Meco Man e927a53b41 精简exit abort system函数		пре 4 година
..
sys	6c7dd30532 add function settimeofday & stime	пре 5 година
SConscript	e927a53b41 精简exit abort system函数	пре 4 година
readme.md	d5f8830177 add newlib/dlib readme	пре 5 година
stdlib.c	e927a53b41 精简exit abort system函数	пре 4 година
termios.h	54143409ca 增加#include <rtconfig.h> 防止开启termios功能后报错	пре 5 година
time.c	ce4fabe158 add errno	пре 4 година
unistd.c	96acad78ba 将posix_getline.h termios.h 头文件包含从<>改为""以防止路径出现分歧	пре 5 година

Attentions

This folder is "common" for armlibc newlibc and dlib. It's not "common" for minilibc.
If you want to add new .c files, please do not forget to fix SConscript file too. eg:
```
if GetDepend('RT_USING_POSIX') == False:
    SrcRemove(src, ['unistd.c'])
```