ButterLibC

ButterLibC is a C standard library implementation written in D.

Purpose

I wanted to learn lower-level programming with C and D. Also, I'd like to have an operating system or userspace fully written in the D language.

Features

!! Very early and incomplete

• printf() mostly works
• rand()

Platforms (WIP)

• Linux AArch64
• Linux X86_64
• Darwin x86_64

Building

This project is built with NetBSD make (bmake). Install it and run:

bmake

To build with a specific compiler:

bmake DMD=dmd      # DMD compiler
bmake DMD=ldmd2    # LDC compiler (default)

Licensing

Files imported from other projects are licensed under one of the MIT, BSD, CC-0 or BSL-1.0 licenses, as specified in file headers. New code is to be considered public domain or licensed under Boost Software License 1.0. Choose one that suits you.

Borrows code from

• (LDC) DRuntime
• musl
• NetBSD libc
• Marco Paland's printf
• pdclib