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 - 1.1.15

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

musl-1.1.15.tar.gz (sig) - July 5, 2016

This release adds new 64-bit MIPS and PowerPC ports, soft-float ABI support for the 32-bit PowerPC arch, and support for revision 6 of the MIPS ISA (not backwards compatible with original MIPS). Serious bugs in memmem, ungetwc, and putenv have been fixed, as well as bug that could break thread-local storage on PowerPC depending on the compiler used to build musl, and a number of low-impact bugs in various interfaces. The pthread_tryjoin_np, pthread_timedjoin_np, and sched_getcpu extension functions, and header-level support for new Linux 4.5 and 4.6 features, have also been added, and the configure script now honors standard options for cross-compiling more correctly.

Older versions

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