danielandClaude Fable 5
1c851a3627
The GCC driver relocates its install prefix from argv[0]. crt1 hardcoded argv[0] as "prog", so make_relative_prefix cwd-joined it and computed exec prefixes relative to the current directory (0:/users/admin/../libexec/gcc/...), and because the computed gcc_exec_prefix is non-NULL the standard /sdk prefixes were never searched. cc1plus was unreachable from anywhere except (by accident of the path arithmetic) 0:/sdk/bin. sdk-diag proved the kernel and libc layers all worked; only the driver's self-relocation was lost. New SYS_GETEXECPATH (151) returns the absolute path the process was spawned from (Process::name); crt1 uses it for argv[0] with a "prog" fallback. With a real argv[0], make_relative_prefix computes 0:/sdk/bin/../libexec/gcc/ from any cwd. Native GCC relinked against the new crt1; sdk-diag ships in the SDK as a permanent probe; the montauk.h TCC mirror gains the wrapper (checker enforced it). Co-Authored-By: Claude Fable 5 <[email protected]>
doomgeneric
@ fc60163949
The Montauk Operating System
MontaukOS is an operating system written in modern C++. It runs on bare metal and supports various applications, including DOOM, a Wikipedia client, and standard desktop utilities.
Features
- Modern preemptive multitasking kernel
- Multi-user userspace with desktop environment and command line
- PCI-e support and drivers for Intel GPU and e100e Ethernet for graphics and networking on real hardware
- ACPI support with AML interpreter, including S3 sleep and ACPI shutdown
- Support for USB including input devices (keyboard/mouse), along with PS/2 input support
- Support for Intel High Definition (HDA) audio devices
- Userspace and kernel audio support
- Support for (some) Intel Bluetooth devices, userspace Bluetooth management app
- Support for the GPT partition table
- VFS using numbered drive identifiers with support for ext2 and FAT32 filesystems
- Support for AHCI and NVMe SSD drives
- Support for UEFI Runtime Services, including power management calls (shutdown/reboot)
- Customizable desktop environment with 12+ graphical apps, including a terminal emulator, file manager, Wikipedia client, weather app, DOOM, and more
- Modern icon pack (Flat Remix) used in desktop environment
- Support for TrueType font, JPEG image, and SVG icon rendering
- Networking including TCP/IP stack, UDP, DNS, DHCP and TLS via BearSSL
- Command-line IRC client
- Live viewable kernel log from GUI
- Mandelbrot set renderer
- PDF viewer app with full support for text (inc. baked-in TrueType fonts) and some graphics
- Userspace Music app with support for MP3 and WAV files
- 2D game engine and demo game with fantasy tileset
Goal
The goal of the MontaukOS project is to create a modern and unique operating system that runs on both emulators and on real hardware. The kernel and included userspace applications are written in modern C++.
History and methodology
Development started in early 2025, as a hand-written toy kernel. The first published Git commit was on Feb 27, 2025. In early 2026, Claude Opus 4.6 began being used to accelerate development of the kernel and userspace.