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>full source bootstrapped from 180 bytes of human-auditable machine code What does this mean? You have a C-like compiler in 180 bytes of assembler that can co

by floxy 2y ago

>full source bootstrapped from 180 bytes of human-auditable machine code What does this mean? You have a C-like compiler in 180 bytes of assembler that can compile a C compiler that can then compile GCC?

mananaysiempre 2y ago
That’s normally what this means, yes, with a few more intermediate steps. There’s only one bootstrap chain like this that I know of[1,2,3], maintained by Jeremiah Orians and the Guix project; judging from the reference to 180 bytes, that’s what the distro GP describes is using as well. > This is a set of manually created hex programs in a Cthulhu Path to madness fashion. Which only have the goal of creating a bootstrapping path to a C compiler capable of compiling GCC, with only the explicit requirement of a single 1 KByte binary or less. [1] https://guix.gnu.org/en/blog/2023/the-full-source-bootstrap-building-from-source-all-the-way-down/ https://guix.gnu.org/en/blog/2023/the-full-source-bootstrap-... [2] https://savannah.nongnu.org/projects/stage0/ https://savannah.nongnu.org/projects/stage0/ [3] https://github.com/oriansj/bootstrap-seeds https://github.com/oriansj/bootstrap-seeds
- floxy 2y ago
  That's pretty awesome
  - lrvick 2y ago
    Yep, Guix and stagex are the only two distros that full source bootstrap to my knowleldge. We use an abbreviated and explicit stage0 chain here for easy auditing: https://codeberg.org/stagex/stagex/src/branch/main/packages/bootstrap/stage0/Containerfile https://codeberg.org/stagex/stagex/src/branch/main/packages/...
    - pabs3 2y ago
      IIRC the FreeDesktop flatpak runtimes are also built from the Bootstrappable Builds folks full source bootstrap.
skulk 2y ago
As per their landing page, yes. > stage0: < 190 byte x86 assembly seed is reproduced on multiple distros > stage1: seed builds up to a tiny c compiler, and ultimately x86 gcc > stage2: x86 gcc bootstraps target architecture cross toolchains very impressive, I want to try this out now.
- pabs3 2y ago
  The LWN article is a good place to start: https://lwn.net/Articles/985739/ https://lwn.net/Articles/985739/

by floxy 2y ago

mananaysiempre 2y ago

That’s normally what this means, yes, with a few more intermediate steps. There’s only one bootstrap chain like this that I know of[1,2,3], maintained by Jeremiah Orians and the Guix project; judging from the reference to 180 bytes, that’s what the distro GP describes is using as well. > This is a set of manually created hex programs in a Cthulhu Path to madness fashion. Which only have the goal of creating a bootstrapping path to a C compiler capable of compiling GCC, with only the explicit requirement of a single 1 KByte binary or less. [1] https://guix.gnu.org/en/blog/2023/the-full-source-bootstrap-building-from-source-all-the-way-down/ https://guix.gnu.org/en/blog/2023/the-full-source-bootstrap-... [2] https://savannah.nongnu.org/projects/stage0/ https://savannah.nongnu.org/projects/stage0/ [3] https://github.com/oriansj/bootstrap-seeds https://github.com/oriansj/bootstrap-seeds

floxy 2y ago
That's pretty awesome
- lrvick 2y ago
  Yep, Guix and stagex are the only two distros that full source bootstrap to my knowleldge. We use an abbreviated and explicit stage0 chain here for easy auditing: https://codeberg.org/stagex/stagex/src/branch/main/packages/bootstrap/stage0/Containerfile https://codeberg.org/stagex/stagex/src/branch/main/packages/...
  - pabs3 2y ago
    IIRC the FreeDesktop flatpak runtimes are also built from the Bootstrappable Builds folks full source bootstrap.

skulk 2y ago

As per their landing page, yes. > stage0: < 190 byte x86 assembly seed is reproduced on multiple distros > stage1: seed builds up to a tiny c compiler, and ultimately x86 gcc > stage2: x86 gcc bootstraps target architecture cross toolchains very impressive, I want to try this out now.

pabs3 2y ago
The LWN article is a good place to start: https://lwn.net/Articles/985739/ https://lwn.net/Articles/985739/