Every embedded Linux developer has used a cross-compiler. Few have ever built one — and fewer still understand what is actually happening inside it. When a glibc version mismatch produces a cryptic linker error on your target board, or a pre-built Clang toolchain silently uses the wrong sysroot, the only way out is understanding. This book gives you that understanding from the ground up.
Cross-Compiler Construction for Embedded Systems is a hands-on, build-it-yourself guide to the toolchain infrastructure that underpins all embedded Linux development. Starting from first principles, you will build GCC cross-compilers manually — stage by stage, decision by decision — for both a TinkerBoard S R2.0 (ARMv7-A) and a Raspberry Pi 4 (ARMv8-A), matching each toolchain precisely to the C library version running on the target OS. You will then build a Clang/LLVM cross-compiler reusing the same sysroot — a topic almost entirely absent from existing embedded Linux resources. Finally, you will containerise all three toolchains with Docker, producing versioned, reproducible compilers distributable to your team with a single command.
This is not a book about using toolchains. It is a book about building them, understanding every stage of the process, and walking away with production-matched cross-compilers you built yourself and can debug, modify, and trust. Whether you have been using a pre-built ARM toolchain for years without questioning it, or you are moving into embedded Linux from general Linux development, this is the hands-on deep-dive you have been looking for.
