musl is a C standard library implementation for Linux. This is a wiki maintained by the enthusiastic user community of musl. Some of musl’s major advantages over glibc and uClibc/uClibc-ng are its size, correctness, static linking support, and clean code.

Introduction

• Getting started
• FAQ
• Compatibility - software and standards compatibility of the API musl provides
• Supported Platforms - compilers, architectures, platforms, where musl works
• Projects using musl - Linux distributions and other projects using musl
• Contacts - mailing list, IRC, support, discussion

Using musl

• Official documentation
• Environment variables affecting musl
• Functional differences from glibc
• Guidelines for Distributions

Contributing

• Reporting bugs
• Writing tests
• Funding maintenance and development

Development

• Open issues
• Roadmap for post-1.0 development
• How to port musl to a new arch
• Ideas for future development
• Design Concepts
• Coding Style
• Mathematical Library
• ABI Cheat Sheet

Further reading

• Comparison with other Linux libc implementations
• Install notes, readme, and release notes in the official repo.
• Generating cross compilers for musl - also features pre-built cross compiler downloads for different arches
• Lightweight alternatives to common libraries and software that may be of interest in building small musl-based systems
• Bugs found by musl - mostly glibc and POSIX issues, some of them affect the development of musl
• Building Busybox explains how to build Busybox 1.22.1 against musl (and kernel header compatibility in general)