Severin Teona - SAOC Milestone 2 Update 4 - Druntime for Microcontrollers

[Severin Teona]

Hi guys!

This is the last update for the second milestone for #SAoC2020.

My last post is at [1]. The plan for this week was the following:
- emulate a simple application that doesn't use the druntime but 
it is linked with it.
- emulate a more complex application that uses the druntime.

What I actually did this week is:
- as I expected, I had problems running the first application, 
because the size of the application wasn't small enough even on 
the emulator (I added more SRAM over a RESERVED memory area)
- I almost finished moving all my work on a Docker and created a 
testing environment for my project.
- I became familiar with the environment in which the 
'ldc-build-runtime' works: how everything is compiled, what 
exactly is compiled, etc.
- I also began removing modules and functionalities I don't think 
are essential on a microcontroller and started working on the 
errors I encountered.

My main work from now on (including next week's work) will be 
focused on building the druntime with as few modules as possible. 
I will start from compiling just object.d and resolve the errors 
as they appear.

[1]: 
https://forum.dlang.org/post/ldqmnadjwhtjfbevcspw@forum.dlang.org