RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ 501b22aabede2d4e179bfc47f3b75522e5933da4

Bernard Xiong 9600b75b55 [DFS] prepare for dfs_v2.0 (#7200)		пре 2 година
..
delay	b9f5bf7d91 [libc]优化usleep函数	пре 2 година
io	9600b75b55 [DFS] prepare for dfs_v2.0 (#7200)	пре 2 година
ipc	7f9ccd3c80 格式化代码	пре 3 година
libdl	93f3cb30e4 [kernel] 将rt_thread结构体改为显式继承rt_object (#7131)	пре 2 година
pthreads	e61d05ca1a [fix] the risk for function exit() when open pthread support. (#6229)	пре 3 година
signal	9bc68d26a4 format Kconfig and sconscript	пре 3 година
Kconfig	be892de35a [posix] add RT_USING_POSIX_SOCKET (#5731)	пре 3 година
SConscript	b513d37cf2 [libc][posix] create 'posix' folder and move related files into it	пре 4 година
readme.md	31c3214faf [posix][io]整理posix/io文件夹 (#5539)	пре 4 година

This folder provides functions that are not part of the standard C library but are part of the POSIX.1 (IEEE Standard 1003.1) standard.

NOTE

For consistency of compilation results across the different of platforms(gcc, keil, iar) , use:
- #include <sys/time.h> to instead of #include <time.h>
- #include <sys/errno.h> to instead of #include <errno.h>
- #include <sys/signal.h> to instead of #include <signal.h>