RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ afcc4005b88c5740cd29f5f8ded69ca2d44c7ec9

guozhanxin ca873fae30 [add] llvm-arm workflows		%!s(int64=2) %!d(string=hai) anos
..
extension	ca873fae30 [add] llvm-arm workflows	%!s(int64=2) %!d(string=hai) anos
include	3419e591da [libc] redirecting header sys/ioctl to bits/ioctl	%!s(int64=2) %!d(string=hai) anos
SConscript	8bee7a0c23 [libc] implement extension standard C functions (#6044)	%!s(int64=3) %!d(string=hai) anos
cctype.c	e1e1596cbd [iar] 修复编译错误 (#6126)	%!s(int64=3) %!d(string=hai) anos
cstdio.c	e1e1596cbd [iar] 修复编译错误 (#6126)	%!s(int64=3) %!d(string=hai) anos
cstdlib.c	93f3cb30e4 [kernel] 将rt_thread结构体改为显式继承rt_object (#7131)	%!s(int64=2) %!d(string=hai) anos
cstring.c	82ccbc40db support llvm-arm 16.0	%!s(int64=2) %!d(string=hai) anos
ctime.c	fd1413d29b 🎈 perf(components/libc/compilers/common/ctime.c): if define cputime, then CLOCK_REALTIME use cputime (#7343)	%!s(int64=2) %!d(string=hai) anos
cwchar.c	8bee7a0c23 [libc] implement extension standard C functions (#6044)	%!s(int64=3) %!d(string=hai) anos
readme.md	f7548b934e [posix][dfs] move dfs_posix dfs_poll dfs_select.c to posix folder	%!s(int64=4) %!d(string=hai) anos

This folder is "common" for all toolchains.