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CrabOS 🦀

Setup

You need a few things to build this:

  • Rust nightly
  • cargo-xbuild
  • nasm
  • A cross binutils targeting x86_64-elf

MacOS

  1. Install Rust with rustup. Make sure install nightly and select it as your default compiler.

  2. Install nasm from Homebrew:

    brew install nasm

  3. Install cargo-xbuild from cargo:

    cargo install cargo-xbuild

  4. Install binutils from source. I build my cross compilers into ~/cross, but anywhere works.

    curl -O https://ftp.gnu.org/gnu/binutils/binutils-2.32.tar.gz
tar xf binutils-2.32
cd binutils-2.32
./configure --target=x86_64-elf --disable-werror --prefix=$HOME/cross
make && make install

Building

make

Known Bugs

  • QEMU's TCG accelerator (the default) has a buggy implementation of the FS.base and GS.base MSRs. Use the KVM or HVF accelerators instead.