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For the American lottery organization MUSL, see Multi-State Lottery Association.
musl
Developer(s)Rich Felker (dalias) and others
Initial releaseFebruary 11, 2011; 13 years ago (2011-02-11)[1]
Stable release
1.2.5[2] / February 29, 2024; 7 months ago (2024-02-29)
Repository
Operating systemLinux 2.6 or later
Platformx86, x86_64, ARM, MIPS, Microblaze, PowerPC, powerpc64, x32, riscv64, OpenRISC, s390x, SuperH
Type
LicenseMIT License
Websitemusl.libc.org

musl is a C standard library intended for operating systems based on the Linux kernel, released under the MIT License.[3] It was developed by Rich Felker to write a clean, efficient, and standards-conformant libc implementation.[4]

Overview

musl was designed from scratch to allow efficient static linking and to have realtime-quality robustness by avoiding race conditions, internal failures on resource exhaustion, and various other bad worst-case behaviors present in existing implementations.[4] The dynamic runtime is a single file with stable ABI allowing race-free updates and the static linking support allows an application to be deployed as a single portable binary without significant size overhead.

It claims compatibility with the POSIX 2008 specification and the C11 standard. It also implements most of the widely used non-standard Linux, BSD, and glibc functions.[5] There is partial ABI compatibility with the part of glibc required by Linux Standard Base.[6]

Version 1.2.0 has support for (no longer current) Unicode 12.1.0 (while still having full UTF-8 support,[7] more conformant/strict than glibc), and version 1.2.1 "features the new 'mallocng' malloc implementation, replacing musl's original dlmalloc-like allocator that suffered from fundamental design problems."[2]

Use

Linux distributions which use musl as their standard C library (some use only musl) include but are not limited to:

The seL4 microkernel[17] ships with musl.

For binaries that have been linked against glibc, gcompat,[18] glibmus-hq.[19] can be used to execute them on musl-based distros.

See also

References

  1. ^ "musl - obsolete versions". musl-libc.org. 2017-10-31. Retrieved 2018-01-14.>
  2. ^ a b "musl libc Release History". musl.libc.org. Archived from the original on 2021-10-16. Retrieved 2020-08-13.
  3. ^ Rich Felker; et al. (2016-04-29). "COPYRIGHT". Archived from the original on 2021-10-16. Retrieved 2016-09-26.
  4. ^ a b "Introduction to musl". 2016-04-21. Archived from the original on 2021-10-16. Retrieved 2016-09-26.
  5. ^ "Compatibility". wiki.musl-libc.org. 2014-05-27. Archived from the original on 2021-10-16. Retrieved 2016-09-26.
  6. ^ "Comparison of C/POSIX standard library implementations for Linux". www.etalabs.net. Archived from the original on 2021-10-16.
  7. ^ "musl libc - Functional differences from glibc". wiki.musl-libc.org. Archived from the original on 2021-10-16. Retrieved 2020-08-13.
  8. ^ "About". Alpine Linux. Retrieved 18 June 2022.
  9. ^ Larabel, Michael (30 September 2018). "Dragora 3.0 Alpha 2 Released As One Of The Libre GNU/Linux Platforms". Phoronix. Phoronix Media. Retrieved 18 June 2022.
  10. ^ Gentoo Authors (20 July 2021). "Additional stage downloads for amd64, ppc, x86, arm available". Gentoo Linux. Retrieved 18 June 2022.
  11. ^ Fietkau, Felix (16 Jun 2015). "OpenWrt switches to musl by default". Archived from the original on 28 July 2015.
  12. ^ "About postmarketOS - postmarketOS Wiki". wiki.postmarketos.org. Retrieved 2024-08-07.
  13. ^ README.md on GitHub
  14. ^ "morpheus". Archived from the original on 2021-10-16. Retrieved 2018-06-15.
  15. ^ "Chimera Linux - About". Chimera Linux. Retrieved 2023-05-10.
  16. ^ "Enter the void". Void Linux. Retrieved 18 June 2022.
  17. ^ seL4/musllibc, seL4 microkernel and related repositories, 2020-08-30, archived from the original on 2021-10-16, retrieved 2020-09-05
  18. ^ "Adélie Linux / gcompat". GitLab. Archived from the original on 2021-10-16. Retrieved 2019-10-21.
  19. ^ "Manoel-linux-gitlab / GlibMus-HQ · GitLab".


source: https://en.wikipedia.org/wiki/Musl

    by Shawn Douglas

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