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.

See below for release notes summaries and download links.

Current Versions

Mainline - 1.1.3

This series is actively developed but intended for use in production environments as long as appropriate testing is performed, and should be preferred whenever there is a need for supporting an arbitrary, expanding set of packages or environments.

musl-1.1.3.tar.gz - Jun 25, 2014

This release adds many features including result sorting in the DNS/hosts resolver modeled on RFC 3484, default timezone from /etc/localtime, gnu2 TLS dialect (TLSDESC) on i386 and x86_64, sendmmsg/recvmmsg functions (Linux extensions), fmtmsg function (XSI), and optional arguments in getopt (GNU extension). Handling of poorly-behaved nameservers (rcode=2 ServFail result) is also improved, and setting of the %gs thread register is now supported on pre-2.6 i386 kernels. Several bugs are fixed including a potentially-important issue in memmem.

Stable - 1.0.3

This series does not add new features and avoids changes that might affect building packages against musl or using applications in environments where they are already known to work. It is intended mostly for developers targetting a fixed profile of application software and kernel, such as in embedded development.

musl-1.0.3.tar.gz - Jun 6, 2014

This maintenance release for the 1.0 branch fixes a stack-based buffer overflow in DNS response parsing (CVE-2014-3484) and various other low to medium severity bugs.

Older versions

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