Building a Minimal Linux Distribution from Scratch: Kernel Compilation and u-root Packaging Guide
By
turrini
A baker's-dozen of insight crammed into one ring.
Summary
This article provides a comprehensive technical guide on building a minimal Linux distribution from scratch, focusing on compiling the Linux kernel, creating an init process, and packaging the distribution using u-root. The tutorial is demonstrated on RISC-V architecture using QEMU's riscv64 virt machine, but the concepts are applicable to other architectures like x86. The resulting micro-distro is capable of basic functionality including internet connectivity.
Key quotes
· 4 pulledIn this article, we'll talk about building up a tiny (micro) Linux 'distribution' from scratch. This distribution really won't do much, but it will be built from scratch.
We will build the Linux kernel on our own, and write some software to package our micro-distro.
Lastly, we are doing this example on the RISC-V architecture, specifically QEMU's riscv64 virt machine. There's very little in this article that is specific to this architecture, so you might as well do an almost identical exercise for other architectures like x86.
Finally, a little distribution is built with u-root that is capable of connecting to the Internet.
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