wlroots/README.md

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# wlroots
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Pluggable, composable, unopinionated modules for building a
[Wayland](http://wayland.freedesktop.org/) compositor; or about 40,000 lines of
code you were going to write anyway.
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- wlroots provides backends that abstract the underlying display and input
hardware, including KMS/DRM, libinput, Wayland, X11, and headless backends,
plus any custom backends you choose to write, which can all be created or
destroyed at runtime and used in concert with each other.
- wlroots provides unopinionated, mostly standalone implementations of many
Wayland interfaces, both from wayland.xml and various protocol extensions.
We also promote the standardization of portable extensions across
many compositors.
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- wlroots provides several powerful, standalone, and optional tools that
implement components common to many compositors, such as the arrangement of
outputs in physical space.
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- wlroots provides an Xwayland abstraction that allows you to have excellent
Xwayland support without worrying about writing your own X11 window manager
on top of writing your compositor.
- wlroots provides a renderer abstraction that simple compositors can use to
avoid writing GL code directly, but which steps out of the way when your
needs demand custom rendering code.
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wlroots implements a huge variety of Wayland compositor features and implements
them *right*, so you can focus on the features that make your compositor
unique. By using wlroots, you get high performance, excellent hardware
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compatibility, broad support for many wayland interfaces, and comfortable
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development tools - or any subset of these features you like, because all of
them work independently of one another and freely compose with anything you want
to implement yourself.
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Check out our [wiki](https://github.com/swaywm/wlroots/wiki/Getting-started) to
get started with wlroots.
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wlroots is developed under the direction of the
[sway](https://github.com/swaywm/sway) project. A variety of wrapper libraries
[are available](https://github.com/swaywm) for using it with your favorite
programming language.
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## Building
Install dependencies:
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* meson
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* wayland
* wayland-protocols
* EGL
* GLESv2
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* libdrm
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* GBM
* libinput
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* xkbcommon
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* udev
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* pixman
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* systemd (optional, for logind support)
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* elogind (optional, for logind support on systems without systemd)
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* libcap (optional, for capability support)
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If you choose to enable X11 support:
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* xcb
* xcb-composite
* xcb-xfixes
* xcb-xinput
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* xcb-image
* xcb-render
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* x11-xcb
* xcb-errors (optional, for improved error reporting)
* x11-icccm (optional, for improved Xwayland introspection)
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Run these commands:
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meson build
ninja -C build
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Install like so:
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sudo ninja -C build install
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## Running the test compositor
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wlroots comes with a test compositor called rootston, which demonstrates the
features of the library and is used as a testbed for the development of the
library. It may also be useful as a reference for understanding how to use
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various wlroots features, but it's not considered a production-quality codebase
and is not designed for daily use.
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If you followed the build instructions above the rootston executable can be
found at `./build/rootston/rootston`. To use it, refer to the example config at
[./rootston/rootston.ini.example](https://github.com/swaywm/wlroots/blob/master/rootston/rootston.ini.example)
and place a config file of your own at `rootston.ini` in the working directory
(or in an arbitrary location via `rootston -C`). Other options are available,
refer to `rootston -h`.
## Contributing
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See [CONTRIBUTING.md](https://github.com/swaywm/wlroots/blob/master/CONTRIBUTING.md).