Win64 folder not forming on UBUNTU while running build.sh

Hello, While running build.sh we are using mingw32 with win32 thread model, which doesn't have C++ thread. This is the default on debian and thus probably ubuntu too. We'll need to switch toolchain to posix thread model.

We have to add these before running Build.sh commands to Build-win32.md

sudo update-alternatives --config x86_64-w64-mingw32-g++ And proceed further

Please allow me to resolve this issue