mescc-tools-seed
mrustc
mescc-tools-seed | mrustc | |
---|---|---|
8 | 75 | |
85 | 2,095 | |
- | - | |
6.6 | 8.8 | |
3 months ago | 3 days ago | |
C | C++ | |
GNU General Public License v3.0 only | MIT License |
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mescc-tools-seed
- Running the "Reflections on Trusting Trust" Compiler
- stage0 x86 seed reduced from 357 Bytes to 256 Bytes
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test
From here I found a reference to the Gash, Mes-M2 and stage0 projects, who's README.org references a nice wiki for stage0. The Wiki references a more expansive stage0-posix repo. From here, I finally got all the pieces to fit togeather.
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How reproducible are Guix packages?
Of course, reproducible builds will only give you security if you trust the compiler you're using to verify. Unlike traditional distributions, Guix packages are rigorously defined in terms of their dependencies all the way down to ~60 MB of bootstrap binaries. There has been a lot of cool work to reduce the initial binary seed size, and they are working to reduce this even further to a "full source" bootstrap which will make use of the stage0 project to bootstrap the entire OS from a small, auditable ASCII Hex -> binary program.
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stage0-posix was ported to RISC-V
stage0-posix just gained initial support for RISC-V (64-bit). It starts with 392 byte hex assembler, 361 byte "shell" and bootstraps simple linker (hex2), macro assembler (M0). Then it builds cc_riscv64 RISC-V compiler written in RISC-V assembly and uses it to build simple C compiler written in C (M2-Planet). Then it builds a few extra utilities (cp, mkdir, untar, ungz, sha256sum, chmod)
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Bootstrapping from Hex to Bison to GCC
I wonder if Brainfuck could be used for https://github.com/oriansj/stage0-posix ? It would not surprise me if there is no other language for which there are so many interpreters written in so many different programming languages. It is even possible to write a Brainfuck interpreter in Brainfuck, which can be verified. And there is also a Brainfuck interpreter written in x86-64: https://github.com/316k/brainfuck-x86-64 . It is a little larger than hex0_x86.hex0 , but not too much to make it hard to verify.
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A Brief Introduction to Forth (1993)
I'd argue the easiest to implement language is macro-assembly then the C subset known as cc_x86
https://github.com/oriansj/mescc-tools-seed
mrustc
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Why do lifetimes need to be leaky?
No, you don't. Existential proof: mrustc ignores lifetimes. Just flat out simply ignores. It changes some corner-cases related to HRBT, yet rustc compiled by mrustc works (that's BTW mrustc exist: to bootsrap the rustc compiler).
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I think C++ is still a desirable coding platform compared to Rust
Incidentally C++ is the only way to bootstrap rust without rust today.
https://github.com/thepowersgang/mrustc
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Rust – Faster compilation with the parallel front-end in nightly
Well, there is mrustc[0], a Rust compiler that doesn't include a borrow-checker, so it's possible to compile (at least some versions of) Rust without a borrow checker, though it might not result in the most optimized code.
AFAIK there are some optimization like the infamous `noalias` optimization (which took several tries to get turned on[1]) that uses information established during borrow checking.
I'm also not sure what the relation with NLL (non-lexical lifetimes) is, where I would assume you would need at least a primitive borrow-checker to establish some information that the backend might be interested in. Then again, mrustc compiles Rust versions that have NLL features without a borrow-checker, so it's again probably more on the optimization side than being essential.
[0]: https://github.com/thepowersgang/mrustc
[1]: https://stackoverflow.com/a/57259339
- Running the "Reflections on Trusting Trust" Compiler
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Forty years of GNU and the free software movement
> Maybe another memory safe language, but Rust has severe bootstrapping issues which is a hard sell for distros that care about source to binary transparency.
It is possible to bootstrap rustc from just GCC relatively easily, although it's a little bit time consuming.
You can use mrustc to bootstrap Rust 1.54: https://github.com/thepowersgang/mrustc
And from then you can go through each version all the way to the current 1.72. (Each new Rust version officially needs the previous one to compile.)
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Building rustc on sparcv9 Solaris
Have you tried this route : https://github.com/thepowersgang/mrustc ?
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GCC 13 and the state of gccrs
Mrustc supports Rust 1.54.0 today
- Any alternate Rust compilers?
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Stop Comparing Rust to Old C++
There are three. The official one, mrustc (no borrow checker, but can essentially compile the official rustc) and GCC (can't really compile anything substantial yet). Only rustc is production-ready though.
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Can I make it so that only the newest version of Rust gets installed?
That probably depends on what you mean by problematic. Having an ever increasing chain of dependencies isn’t the most desirable situation so there has been some work to trim the bootstrap chain. In 2018, when the blogpost I linked above was written, mrustc was used to bootstrap rust 1.19.0; now mrustc can bootstrap rust 1.54.0 so the chain to recent versions is much shorter than if all those intervening versions back through 1.19.0 needed to be built. https://github.com/thepowersgang/mrustc
What are some alternatives?
live-bootstrap - Use of a Linux initramfs to fully automate the bootstrapping process
gccrs - GCC Front-End for Rust
mes-m2 - Making Mes.c M2-Planet friendly
gccrs - GCC Front-End for Rust
archlinux-installer-script - Arch Linux install script. Only performs the minimal steps for booting into arch. 75 lines of script with full progress messages and tutorial.
llvm-cbe - resurrected LLVM "C Backend", with improvements
neat - The Neat Language compiler. Early beta?
rust-ttapi
c4 - C in four functions
miri - An interpreter for Rust's mid-level intermediate representation
stage0 - A set of minimal dependency bootstrap binaries
gcc-rust - a (WIP) Rust frontend for gcc / a gcc backend for rustc