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Using Docker to build Gentoo Linux stage3

WIP PROJECT!

This is a experiment project envolving Docker to build and automate custom stage3 of Gentoo Linux. The main differences between my custom stages and official stages are:

  • Clang/LLVM as primary compiler;
  • Musl as default Libc.
  • Hardened profile provided.

Building

Install Docker in your machine, and run docker build -t <insertyourtag> . Take a little time to build, so sit back, take a coffee and relax. After ending, run docker export -o stage.tar <insertyouprevioustag>, and your fresh stage3-clang-musl-gentoo are done.

You can follow Gentoo Handbook documentation to continue your new installation: https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Stage

Errors are expected. Consider opening a bug report to help this project.

Common issues

dev-vcs/git build fails, and error log doesn't make any sense. An option --exclude 'dev-vcs/git' was added at the end of rebuild system step.

Notes

Rust fails to install, because rust-bin is necessary to bootstrap rust, and rust-bin doesn't work if LLVM are installed with llvm-libunwind use flag. So this project boostrap and install Clang, LLVM and Rust with necessary modifications. Supposing you're looking for an exotic setup, this doesn't should a problem.

In my case, I use Rust to build Firefox, Alacritty and Exa apps.

  • https://bugs.gentoo.org/733242
  • https://github.com/rust-lang/rust/issues/84040
  • https://github.com/rust-lang/rust/issues/76020

Special thanks

Special thanks to Leonardo Neumann, The CyberDuck and your clang-musl overlay:

  • https://github.com/clang-musl-overlay/clang-musl-overlay

References

  • https://wiki.gentoo.org/wiki/Clang
  • https://wiki.gentoo.org/wiki/Project:Musl