Linux From Scratch

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01 / PROJECT OVERVIEW

Linux From Scratch (LFS) is a hands-on project focused on building a complete Linux system directly from source code.

Instead of installing a prebuilt distribution, this project follows the Linux From Scratch book to construct the system step by step — from the initial toolchain to a functional Linux environment.

The main objective is to understand how Linux distributions are assembled, how their core components interact, and how a minimal Linux system operates internally.

02 / PROJECT OBJECTIVES

• Build a Linux system entirely from source.
• Understand cross-compilation and toolchain construction.
• Explore the GNU toolchain and core system utilities.
• Understand the Linux filesystem hierarchy.
• Study system libraries, linking, and dynamic loading.
• Configure the kernel and system boot process.
• Understand system initialization with systemd.
• Document build procedures, test results, and troubleshooting.

03 / BUILD ENVIRONMENT

Component	Configuration
Host OS	Fedora 43 Workstation
Virtualization	KVM / QEMU
Architecture	x86_64
Target Triplet	x86_64-lfs-linux-gnu
Build Method	Cross-compilation and native compilation
Build System	LFS with systemd
Build Directory	/mnt/lfs
Build User	lfs

04 / BUILD PROCESS

The project follows the structure of the official LFS book.

Stage	Description
Preparation	Host environment and build prerequisites
Temporary Toolchain	Cross-compiler and temporary system tools
Chroot Environment	Entering the isolated LFS build environment
Base System	Building essential system packages
System Configuration	Configuring users, filesystems, and system services
Kernel	Linux kernel configuration and compilation
Bootloader	Preparing the bootable system

05 / TECHNOLOGIES & COMPONENTS

Core Components

Component	Technologies
GNU Toolchain	GCC, Binutils, GNU Make
C Library	glibc
Shell	Bash
Core Utilities	Coreutils, Findutils, Grep, Sed, Gawk
System Libraries	Readline, Libcap
Build Tools	Make, Bison, M4, Flex
System Initialization	systemd
Kernel	Linux

Technical Focus

• Cross-compilation and toolchain construction
• Compilation from source code
• Shared libraries and dynamic linking
• Filesystem hierarchy and system configuration
• Package testing and troubleshooting
• Linux kernel and system initialization

06 / DOCUMENTATION & TROUBLESHOOTING

This repository documents the actual build process, including:

• Build commands and configuration details.
• Package versions and dependencies.
• Test-suite results and failures.
• Compilation and linking issues.
• Root-cause analysis and applied fixes.
• Important configuration files and system changes.

The goal is not only to record successful builds, but also to understand why failures happen and how they are resolved.

07 / CURRENT PROGRESS

In Progress

The base system construction is underway.

Current work includes building and validating essential system components, running package test suites, and resolving build-related issues.

Progress is documented incrementally as the project develops.

08 / ENGINEERING APPROACH

Source Code
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Build Toolchain
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Compile Packages
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Test & Validate
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Configure System
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Bootable Linux

Every component is built and examined to understand its role in the operating system.

Build · Inspect · Test · Understand

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Building Linux to understand Linux.
_{Daemon-linux | Linux From Scratch Project}