kylekrein/live-bootstrap
1
0
Fork 0
mirror of https://github.com/fosslinux/live-bootstrap.git synced 2026-03-23 11:36:32 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

Update to stage0-posix 1.3.

Browse source
This commit is contained in:
Andrius Štikonas 2021-06-10 18:01:47 +01:00
parent 8210cc9e24
commit b885cb5727
52 changed files with 230 additions and 2045 deletions
Download patch file Download diff file Expand all files Collapse all files

45
parts.rst
View file

@ -6,8 +6,8 @@
.. SPDX-License-Identifier: CC-BY-SA-4.0
mescc-tools-seed
================
stage0-posix
============
This is where all the magic begins. We start with our hex0 and kaem
seeds and bootstrap our way up to M2-Planet, a subset of C, and mes-m2,
@ -28,9 +28,10 @@ taken here:
- M2-Planet (v1) compiles blood-elf (final)
- M2-Planet (v1) compiles get_machine
- M2-Planet (v1) compiles M2-Planet (final)
- M2-Planet (final) compiles mescc-tools-extra (see next step)
This seems very intimidating, but becomes clearer when reading the
source: https://github.com/oriansj/mescc-tools-seed/blob/master/x86/
source: https://github.com/oriansj/stage0-posix/blob/master/x86/
(start at mescc-tools-seed-kaem.kaem).
From here, we can move on from the lowest level stuff.
@ -38,19 +39,18 @@ From here, we can move on from the lowest level stuff.
mescc-tools-extra
=================
mescc-tools and mes-m2 are the projects bootstrapped by
mescc-tools-seed. However, we have some currently unmerged additions to
mescc-tools that we require for this project, namely filesystem
mescc-tools-extra contains some additional programs, namely filesystem
utilities ``cp`` and ``chown``. This allows us to have one unified
directory for our binaries. Futhermore, we also build ``fletcher16``, a
preliminary checksumming tool, that we use to ensure reproducibility and
authenticity of generated binaries.
directory for our binaries. Futhermore, we also build ``sha256sum``, a
checksumming tool, that we use to ensure reproducibility and authenticity
of generated binaries. We also build initial ``untar`` and ``ungz``
utilities to deal with compressed archives.
``/after``
==========
We now move into the ``/after`` directory. As mescc-tools-seed has no
concept of ``chdir()`` (not added until very late in mescc-tools-seed),
We now move into the ``/after`` directory. As stage0-posix has no
concept of ``chdir()`` (not added until very late in stage0-posix),
we have to copy a lot of files into the root of the initramfs, making it
very messy. We get into the move ordered directory ``/after`` here,
copying over all of the required binaries from ``/``.
@ -86,14 +86,6 @@ recompiled 5(!) times to add new features that are required for other
features, namely ``long long`` and ``float``. Each time, the libc is
also recompiled.
untar
=====
``tar`` is the most common archive format used by software source
code, often compressed also. To avoid continuing using submodules we
switch to software distribution using tar archives. ``untar.c`` is
a single file implementation of tar format and is part of libarchive 3.4.
Note that now we begin to delve into the realm of old GNU software,
using older versions compilable by tinycc. Prior to this point, all tools
have been adapted significantly for the bootstrap; now, we will be using
@ -125,21 +117,6 @@ patch 2.5.9
significantly more complex edits, including just changes to lines.
Luckily, we are able to patch ``patch`` using ``sed`` only.
sha-2
=====
``sha-2`` is a standalone external ``sha256sum`` implementation,
originally as a library, but patched to have a command line interface.
It is mostly output-compatible with ``sha256sum`` from coreutils. We use
this in replacement of ``fletcher16``.
Redo checksums using ``sha256sum``
==================================
We have now just built ``sha256sum``, which has a significantly (many orders
of magnitude) lower collision rate than ``fletcher16``, so we recheck all of
the existing binaries using ``sha256sum``.
make 3.80
=========