lqb/rt-thread: RT-Thread诞生于2006年，是一款以开源、中立、社区化发展起来的物联网操作系统。RT-Thread主要采用 C 语言编写，浅显易懂，且具有方便移植的特性（可快速移植到多种主流 MCU 及模组芯片上）。RT-Thread把面向对象的设计方法应用到实时系统设计中，使得代码风格优雅、架构清晰、系统模块化并且可裁剪性非常好。RT-Thread有完整版和Nano版，对于资源受限的微控制器（MCU）系统，可通过简单? @ b204651517aa1840d778f2f6fcfdc40207cab753

Bernard Xiong b204651517 Merge pull request #4333 from mysterywolf/pthread		4 gadi atpakaļ
..
sys	598aa86f75 move clock_time_to_tick to time.c	4 gadi atpakaļ
SConscript	e927a53b41 精简exit abort system函数	4 gadi atpakaļ
readme.md	d5f8830177 add newlib/dlib readme	5 gadi atpakaļ
stdlib.c	263d856fa4 update	4 gadi atpakaļ
termios.h	54143409ca 增加#include <rtconfig.h> 防止开启termios功能后报错	5 gadi atpakaļ
time.c	598aa86f75 move clock_time_to_tick to time.c	4 gadi atpakaļ
unistd.c	fa8e8ed31f add RTM_EXPORT label for unistd.c	4 gadi atpakaļ

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'])
```