RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ 5e5ceabfdce8638c5ec8b78d4a53aa2ed0046b82

Meco Man 5e5ceabfdc add ctime_r() and re-implement ctime()		vor 5 Jahren
..
sys	6c7dd30532 add function settimeofday & stime	vor 5 Jahren
SConscript	b3ab8a99e1 Signed-off-by: mysterywolf	vor 5 Jahren
readme.md	d5f8830177 add newlib/dlib readme	vor 5 Jahren
termios.h	54143409ca 增加#include <rtconfig.h> 防止开启termios功能后报错	vor 5 Jahren
time.c	5e5ceabfdc add ctime_r() and re-implement ctime()	vor 5 Jahren
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	vor 5 Jahren

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'])
```