Download musl

Git repository

The latest musl source is always available via the git revision control system. Efforts are made to keep the master branch in a state that not only compiles and works, but that works at least as well or better than the latest release.

The following command can be used to checkout a copy of the musl git repository:

$ git clone git://

Source and revision history are also browsable online via cgit.

Official releases

musl generally follows a time-based release cycle, with versions spaced roughly one to three months apart. Version numbering, however, is based on an evolving roadmap for particular compatibility and feature goals. Releases are timed so as to make fixes for major bugs available in release form as soon as possible while leaving ample time for testing after significant invasive changes.

Beginning with 1.1.7, releases are signed with the project GPG key. Its fingerprint is 8364 8929 0BB6 B70F 99FF DA05 56BC DB59 3020 450F and can be cross-checked against @musllibc on Twitter.

See below for release notes summaries and download links.

Current Versions

Mainline - 1.1.19

This series is actively developed but intended for use in production environments as long as appropriate testing is performed.

musl-1.1.19.tar.gz (sig) - February 22, 2018

This release features major new iconv functionality including support for stateful encodings (so far, ISO-2022-JP and UTF-16/32 with BOM-determined endianness), conversion to JIS-based Japanese encodings (previously only from direction was supported), EBCDIC codesets (so far IBM1047), and DOS Cyrillic (CP866). Character data has been updated for alignment with Unicode 10.0. The fopencookie stdio extension function and strftime padding extensions have been added, and many smaller compatibility improvements and bug fixes have been made.

Older versions

Earlier versions of musl have been moved to a separate page.