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Qt for X11 Requirements

Platform Plugin Dependencies

On Linux, the xcb QPA (Qt Platform Abstraction) platform plugin is used. It provides the basic functionality needed by Qt GUI and Qt Widgets to run against X11. Its library dependencies are described the following table. To build Qt from its source code, you will also need to install the development packages for these libraries for your system.

Name Library Notes Configuration options Minimum working version
XRender libXrender X Rendering Extension; used for anti-aliasing and alpha cursor support -xrender or auto-detected 0.9.0
xcb-render libxcb-render X C Bindings for Render extension auto-detected 1.11
xcb-render-util libxcb-render-util Utility library for XCB for Render extension auto-detected 0.3.9
xcb-shape libxcb-shape X C Bindings for Shape extension auto-detected 1.11
xcb-randr libxcb-randr X C Bindings for Resize and Rotate Extension auto-detected 1.11
xcb-xfixes libxcb-xfixes X C Bindings for Fixes Extension auto-detected 1.11
xcb-xkb libxcb-xkb X C Bindings for XKeyboard Extension auto-detected 1.11
xcb-sync libxcb-sync X C Bindings for Sync Extension auto-detected 1.11
xcb-shm libxcb-shm X C Bindings for Shared Memory Extension auto-detected 1.11
xcb-icccm libxcb-icccm X C Bindings for ICCCM Protocol auto-detected 0.3.9
xcb-keysyms libxcb-keysyms Utility library for XCB for keycode conversion auto-detected 0.3.9
xcb-image libxcb-image Utility library for XCB for XImage and XShmImage, used for QBackingStore and cursor support auto-detected 0.3.9
xcb-util libxcb-util Utility library for XCB for atom, aux and event auto-detected 0.3.9
xkbcommon libxkbcommon Keymap handling -xkbcommon or auto-detected 0.5.0
xkbcommon-x11 libxkbcommon-x11 Keymap handling auto-detected 0.5.0
Fontconfig libfontconfig Font customization and configuration -fontconfig or auto-detected 2.6
FreeType libfreetype Font engine 2.3.0
Xext libXext X Extensions 6.4.3
X11 libX11 X11 client-side library 6.2.1
xcb libxcb X C Binding library 1.11
X11-xcb libX11-xcb Xlib/XCB interface library 1.3.2
SM libSM X Session Management -sm or auto-detected 6.0.4
ICE libICE Inter-Client Exchange -sm or auto-detected 6.3.5
glib libglib-2.0 Common event loop handling -glib or auto-detected 2.8.3
pthread libpthread Multithreading 2.3.5

Development packages for these libraries contain header files that are used when building Qt from its source code. On Debian-based GNU/Linux systems, for example, we recommend that you install the following development packages:

  • libfontconfig1-dev
  • libfreetype6-dev
  • libx11-dev
  • libx11-xcb-dev
  • libxext-dev
  • libxfixes-dev
  • libxi-dev
  • libxrender-dev
  • libxcb1-dev
  • libxcb-glx0-dev
  • libxcb-keysyms1-dev
  • libxcb-image0-dev
  • libxcb-shm0-dev
  • libxcb-icccm4-dev
  • libxcb-sync-dev
  • libxcb-xfixes0-dev
  • libxcb-shape0-dev
  • libxcb-randr0-dev
  • libxcb-render-util0-dev
  • libxcb-util-dev
  • libxcb-xinerama0-dev
  • libxcb-xkb-dev
  • libxkbcommon-dev
  • libxkbcommon-x11-dev

Some of these packages depend on others in this list, so installing one may cause others to be automatically installed. Other distributions may provide system packages with similar names.

Accessibility Dependencies

The Qt accessibility implementation uses the Assistive Technology Service Provider Interface (AT-SPI). Besides DBUS, the development package libatspi2.0-dev must be installed.

OpenGL Dependencies

Configure attempts to automatically detect OpenGL ES 2.0, or later, or regular desktop OpenGL. You can disable OpenGL support by using the -no-opengl option.

Note: The Qt OpenGL module (which contains classes that start with QGL) has been deprecated in favor of the Qt GUI module (which contains classes that start with QOpenGL).

QDoc Dependencies

QDoc uses Clang to parse C++ code. If you wish to build QDoc manually, refer to Installing Clang for QDoc for specific build requirements.

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