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initial documentation
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YellowJacketLinux
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README.md
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README.md
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# lfs-rpmify
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Dependencies needed to build RPM on an LFS system
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Building RPM in LFS 12.2
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========================
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This git is for the scripts needed to build the dependencies for the RPM Package
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Manager (RPM) within a LFS 12.2 system. This is ‘Phase Three’ in `THE-PLAN.md`.
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Dependency One: UnZip
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---------------------
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Justification: Needed to build SQLite 3 (to unpack the documentation). No build
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dependencies outside of LFS.
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Script: [`01-unzip.sh`](01-unzip.sh)
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Status: Script Untested
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THE-PLAN.md
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The Plan
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========
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This is an attempt to create a new GNU/Linux distribution. The why is in the
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file `THE_WHY.md` but TLDR, because I can. Well, because I think I can. Maybe,
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and even if not, I will still learn a lot...
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The new distribution will be called ‘Yellow-Jacket GNU/Linux’ (abbreviated as
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‘YJL’) and will be heavily based upon ‘Linux From Scratch’ (LFS) but will have
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many influences from my years with Red Hat Linux, including use of RPM as the
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package manager.
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Phase One: LFS Bootstrap
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------------------------
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Create the needed shell scripts to build the current SystemD LFS (12.2 as I
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type) on a USB thumb drive that can then boot an `x86_64` system and rebuild
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itself to the hard drive of that system. Long term goal is a generic image that
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can be copied onto any thumb drive via `dd`, boot a generic `x86_64` system, and
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build LFS on it. Short term goal is specific to my system.
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For the git related to Phase One, see
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https://github.com/YellowJacketLinux/lfs-buildscripts/tree/main
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Phase Two: GCC Bootstrap
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------------------------
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The GCC built by LFS does not support building the Ada or D compilers. Both of
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those compilers are useful on a GNU/Linux system.
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Once I have a hard-disk install booting, the very first order of business is to
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rebuild GCC for full compiler support.
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To compile GCC with Ada and D support, a working Ada and D compiler is needed.
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My LFS 11.3 system has those. What I did back then, on CentOS 7.9 (my build host
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for LFS 11.3) I built GCC 7.5.0 with Ada (`gnat`) support, with an install
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prefix of `/opt/gcc750`. GCC 7.5.0 was the newest GCC I could get to build in
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CentOS 7.9 with Ada.
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I had to copy a few shared libraries from the CentOS 7 system into
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`/opt/gcc750/lib` but once I did that, I was able to use that GCC in LFS 11.3 to
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then build an Ada and D capable GCC 10.4.0 within `/opt/gcc1040`, GCC 7.5.0
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would not succesfully build an Ada and D capable GCC 12.2.0.
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However I was then able to use GCC 10.4.0 to build the Ada and D capable GCC
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12.2.0 which is the GCC version in LFS 11.3.
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For the LFS 12.2 GCC bootstrap, I *suspect* I can use the Ada and D capable GCC
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GCC 12.2.0 in LFS 11.3 to build an Ada and D capable GCC 14.2.0 installed in
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`/opt/gcc1420` that I can then use in LFS 12.2 to bootstrap the system GCC, of
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course running the full test suite before installing.
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I tried adding Ada and D support to the GCC building of LFS 12.2 Chapter 5 and
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it caused a build failure, so it is *possible* I will need another intemediary.
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Anyway, boostrapping an Ada and D capable GCC within LFS 12.2 will be my first
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priority once it is booting.
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Phase Three: Building RPM
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--------------------------
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This phase is what the git is about.
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The needed libraries to build RPM will need to be built and installed, and then
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RPM will be built and installed.
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Phase Four: RPM Bootstrap
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-------------------------
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Once RPM is built and installed comes the long and tedious task of writing the
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needed RPM spec files to rebuild every package on the system in RPM. Much of
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that work has already been done from my LFS 11.3 system but the spec files need
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to be updated and some still needed to be written when the water pipe broke.
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Phase Five: Mock Build Environment
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----------------------------------
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After the system is RPM bootstrapped, I have to build and configure a Mock build
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environment for packages, see https://rpm-software-management.github.io/mock/
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A Mock build build environment is essential for clean, untainted packages. I
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have used Mock build environments in the past but creating one from scratch for
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a new distribution is something I have not done.
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Phase Six: XFCE
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---------------
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Once the system is RPM bootstrapped, I can start building the software needed
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for the XFCE desktop environment.
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My *personal* preferred desktop environment is actually MATE but XFCE is what I
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am building as the default desktop environment for YJL.
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Phase Seven: Installer
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----------------------
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With XFCE running, a bootable USB thumb drive that can install the system from
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RPM packages will have the be created. That will be when YJL becomes a reality
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and not just a concept I am working towards.
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