RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ lts-v3.1.x

Meco Man 03f4d40e30 [lts 3,1,x] format codes		4 anni fa
..
sys	03f4d40e30 [lts 3,1,x] format codes	4 anni fa
SConscript	055c3d3e1d [Update] Sync from v4.0.3	5 anni fa
readme.md	055c3d3e1d [Update] Sync from v4.0.3	5 anni fa
termios.h	03f4d40e30 [lts 3,1,x] format codes	4 anni fa
time.c	03f4d40e30 [lts 3,1,x] format codes	4 anni fa
unistd.c	03f4d40e30 [lts 3,1,x] format codes	4 anni fa

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'])
```