How to build a Linux microsystem?

Question

linux

In order to increase my skill level, I want to figure out how to build grub, kernel and bash, without an init system.
The target system is a regular x86 in VirtualBox.
Prompt sources and manuals with which it is worth starting.

Answer 1

Linux From Scratch (LFS)
gentoo
try

Answer 2

There is literally one two three lines of the command line.
What are you going to study there?
Or do you want to write all the makefiles yourself???

Answer 3

KO suggests that you can assemble the system according to instructions from the Internet, for example, for Gentoo Linux.

Answer 4

Go to the compizomania website. Everything is there. And how to build Linux too.