libhybris

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Hybris
[[Programmer|Original authorTemplate:Pluralize from text]]Carsten Munk
[[Programmer|DeveloperTemplate:Pluralize from text]]Mer, Jolla, Open webOS community, Canonical Ltd.
Initial release5 August 2012; 14 years ago (2012-08-05)[1]
Template:Infobox software/simple
Written inC, C++
Operating systemLinux
TypeCompatibility layer
LicenseApache License 2[2]
Websitegithub.com/libhybris

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File:Linux API.svg
The GNU C Library (glibc) and libbionic act as a wrapper around the Linux system calls. Libhybris replaces Libbionic and works on top of the glibc, i.e. it hooks into glibc instead of into the Linux kernel system calls, thereby acting as a compatibility layer.
File:Linux kernel System Call Interface and glibc.svg
The Android operating system replaces the GNU C Library with libbionic. Both libraries are wrappers around the system calls of the Linux kernel, but while the GNU C Library has aimed to become and stay POSIX-compliant, libbionic does not. Programs written for libbionic can only run on GNU C Library with the help of another wrapper called libhybris.
File:Linux API and Linux ABI.svg
While a programmer targets and uses an API, a compiled program can only use the resulting ABI. . After compilation, the binaries offer an ABI.

libhybris is a compatibility layer for computers running Linux distributions based on the GNU C library or Musl,[3] intended for using software written for Bionic-based Linux systems, which mainly includes Android libraries and device drivers.[4]

History

Hybris was initially written by Carsten Munk, a Mer developer, who released it on GitHub on 5 August 2012[1] and publicly announced the project later that month.[4][5] Munk has since been hired by Jolla as their Chief Research Engineer.[6]

Hybris has also been picked up by the Open webOS community for WebOS Ports,[7][8] by Canonical for Ubuntu Touch[6][9] and by the AsteroidOS[10] project.

In April 2013, Munk announced that Hybris has been extended to allow Wayland compositors to use graphic device drivers written for Android.[6][11][12] Weston has had support for libhybris since version 1.3, which was released on 11 October 2013.[13]

Features

Hybris loads "Android libraries, and overrides some symbols from bionic with glibc"[4] calls, making it possible to use Bionic-based software, such as binary-only Android drivers, on glibc-based Linux distributions.

Hybris can also translate Android's EGL calls into Wayland EGL calls, allowing Android graphic drivers to be used on Wayland-based systems. This feature was initially developed by Collabora's Pekka Paalanen for his Android port of Wayland.[6][14][15][16]

See also

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References

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  1. ^ a b Page Module:Citation/CS1/styles.css has no content."Initial commit of stskeeps/libhybris". GitHub. 5 August 2012. Retrieved 3 July 2013.
  2. ^ Page Module:Citation/CS1/styles.css has no content."libhybris/hybris/COPYING". GitHub. 4 April 2013. Retrieved 3 July 2013.
  3. ^ Page Module:Citation/CS1/styles.css has no content."Hybris - postmarketOS". wiki.postmarketos.org. Retrieved 21 October 2019.
  4. ^ a b c Page Module:Citation/CS1/styles.css has no content.Carsten Munk. "So, introducing libhybris,…". Google+. Retrieved 3 July 2013.
  5. ^ Page Module:Citation/CS1/styles.css has no content."Libhybris: Load Android Libraries, Override Bionic Symbols". Phoronix. 25 September 2012. Retrieved 3 July 2013.
  6. ^ a b c d Page Module:Citation/CS1/styles.css has no content.Carsten Munk (11 April 2013). "Wayland utilizing Android GPU drivers on glibc based systems, Part 1". Mer Project. Retrieved 3 July 2013.
  7. ^ Page Module:Citation/CS1/styles.css has no content."Open webOS ported to Nexus 7 over holiday break". The H Open. 7 January 2013. Retrieved 3 July 2013.
  8. ^ Page Module:Citation/CS1/styles.css has no content."WebOS-Ports". WebOS-Ports. Retrieved 3 July 2013.
  9. ^ Page Module:Citation/CS1/styles.css has no content."libhybris in Launchpad". Launchpad.net. 5 February 2013. Retrieved 3 July 2013.
  10. ^ Page Module:Citation/CS1/styles.css has no content."AsteroidOS: An open-source operating system for smartwatches". AsteroidOS. Retrieved 27 January 2016.
  11. ^ Page Module:Citation/CS1/styles.css has no content.Munk, Carsten (8 May 2013). "Wayland utilizing Android GPU drivers on glibc based systems, Part 2". Mer Project. Retrieved 3 July 2013.
  12. ^ Page Module:Citation/CS1/styles.css has no content."Jolla Brings Wayland Atop Android GPU Drivers". Phoronix. 11 April 2013. Retrieved 3 July 2013.
  13. ^ Page Module:Citation/CS1/styles.css has no content."Wayland and Weston 1.3 release notes". 11 October 2013.
  14. ^ Page Module:Citation/CS1/styles.css has no content.Munk, Carsten (13 April 2013). "libhybris/hybris/egl/platforms/common/wayland-android.xml". GitHub. Retrieved 3 July 2013.
  15. ^ Page Module:Citation/CS1/styles.css has no content."First Signs Of Wayland Running On Android". Phoronix. 27 April 2012. Retrieved 3 July 2013.
  16. ^ Page Module:Citation/CS1/styles.css has no content.Pekka Paalanen (24 September 2012). "Wayland on Android: upgrade to 4.0.4 and new build integration". Retrieved 3 July 2013.

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