Simple OS

Prerequisites

You need to install:

1. NASM assembler
2. GCC cross-compiler for i686-elf target
3. QEMU for x86 emulation

Installing cross-compiler (on Linux)

# Install dependencies
sudo apt-get install build-essential bison flex libgmp3-dev libmpc-dev libmpfr-dev texinfo

# Follow the tutorial at https://wiki.osdev.org/GCC_Cross-Compiler to build your cross-compiler

Building the OS

make

Running in QEMU

make run

Debugging

make debug

Then connect with GDB using:

gdb -ex "target remote localhost:1234" -ex "symbol-file os.bin"