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nanobyte_os

This repository contains the code from the "Building an OS" series on the "Nanobyte" YouTube channel.

Building

First, install the following dependencies:

# Ubuntu, Debian:
sudo apt install build-essential bison flex libgmp3-dev libmpc-dev libmpfr-dev texinfo wget \
                   nasm mtools python3 python3-pip python3-parted scons dosfstools libguestfs-tools qemu-system-x86

# Fedora:
sudo dnf install gcc gcc-c++ make bison flex gmp-devel libmpc-devel mpfr-devel texinfo wget \
                   nasm mtools python3 python3-pip python3-pyparted python3-scons dosfstools guestfs-tools qemu-system-x86

# Arch & Arch-based:
paru -S gcc make bison flex libgmp-static libmpc mpfr texinfo nasm mtools qemu-system-x86 python3 scons

NOTE: to install all the required packages on Arch, you need an AUR helper.

Then you must run python3 -m pip install -r requirements.txt

Next, modify the configuration in build_scripts/config.py. The most important is the toolchain='../.toolchains' option which sets where the toolchain will be downloaded and built. The default option is in the directory above where the repo is cloned, in a .toolchains directory, but you will get an error if this directory doesn't exist.

After that, run scons toolchain, this should download and build the required tools (binutils and GCC). If you encounter errors during this step, you might have to modify scripts/setup_toolchain.sh and try a different version of binutils and gcc. Using the same version as the one bundled with your distribution is your best bet.

Finally, you should be able to run scons. Use scons run to test your OS using qemu.

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