RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ bc6e8c544a4266c4d8c0f5bf8d3d239679ff055f

peilaus alkaen https://github-proxy.rt-thread.io/RT-Thread/rt-thread.git

qiuyiuestc 5f838f86aa add libdl and extension examples		15 vuotta sitten
..
SConscript	5f838f86aa add libdl and extension examples	15 vuotta sitten
extension.c	5f838f86aa add libdl and extension examples	15 vuotta sitten