[CODE][COMPILER] Cross-Compile ARMv7 and ARMv8 executables on linux/windows

[zettelkasten]

This bounty is about creating and explaining in form of a tutorial how to Cross-Compile ARMv7 and ARMv8 executables on a linux/windows system.

The Bounty for making this happen on linux starts at 1000 ZETTEL,

The Bounty for making this happen on windows starts at 2000 ZETTEL.

So these are 2 separate Bounties actually.

In more detail:

The goal is to be able to build a fully working statically linked ARM version geared towards Rasp Pi, that is completely compiled/built on linux or windows.
So you will need to explain what to download, how to set everything up and how to initiate and finalize the building process.