RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ 850e1aeb5264818c133a32ff457794ff9bd9364d

Meco Man 850e1aeb52 [libc][time] 细微调整time.c		4 vuotta sitten
..
none-gcc	f9ba41f4c2 更改libc目录为common 以及 none-gcc	4 vuotta sitten
sys	f9ba41f4c2 更改libc目录为common 以及 none-gcc	4 vuotta sitten
SConscript	ae66d82624 update sconscript	4 vuotta sitten
dirent.h	f9ba41f4c2 更改libc目录为common 以及 none-gcc	4 vuotta sitten
readme.md	f9ba41f4c2 更改libc目录为common 以及 none-gcc	4 vuotta sitten
stdlib.c	3c05a4e719 [compoenets] auto & manual formatted	5 vuotta sitten
termios.h	3c05a4e719 [compoenets] auto & manual formatted	5 vuotta sitten
time.c	850e1aeb52 [libc][time] 细微调整time.c	4 vuotta sitten
unistd.c	3c05a4e719 [compoenets] auto & manual formatted	5 vuotta sitten

Attentions

This folder is "common" for all toolchains.
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'])
```