The document discusses configuring and building Qt for different targets, including: - Configuring Qt for X11 on the host system - Configuring Qt for QVFb to run on the host with emulated devices - Configuring Qt for an embedded Linux target which will run on the target device It provides options for the configure script to customize Qt for each target.

1. Embedding Qt A workshop in running Qt on embedded Linux targets

3. Training (embedded Linux, etc)

4. Various embedded Qt-based products

5. Qt mentoring

6. Networking (human to human)

7. Founder and moderator at QtCentre

8. Looking for Qt jobs related to Formula 1!

10. Licensing controversy 1998

11. GPL since 2005 (X11 2000, OS X 2003)

12. LGPL on all platforms since 2008

13. Trolltech was bought by Nokia 2008, renamed to Qt Software Qt Development Frameworks.

14. We call them Qt, and the developers are trolls.

18. 100+ million devices out there!

22. qtnode.net – #qt on freenode, wiki

23. Much more...

25. Compiling

26. Compiling compiling compiling

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29. Compiling compiling

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31. Compiling compiling compiling compiling

32. Compiling compiling compiling

34. Getting the source

35. Configuring and building for X11

36. Working with multiple installs of Qt and QMake

37. Configuring and building for QVFb

38. Embedded Linux 101

39. Configuring Qt for Embedded Linux

40. Deploying Qt on an embedded Linux target

41. Testing the Development Setup

43. Qt for QVFb – runs on host with emulated devices

45. Emulate for simplified debugging

46. Great for screenshots for manuals and designers

50. Use EmbeddingQt/*

53. Which edition of Qt do you want to use ? Type 'c' if you want to use the Commercial Edition. Type 'o' if you want to use the Open Source Edition. o This is the Qt/X11 Open Source Edition. You are licensed to use this software under the terms of the Lesser GNU General Public License (LGPL) versions 2.1. You are also licensed to use this software under the terms of the GNU General Public License (GPL) versions 3. Type '3' to view the GNU General Public License version 3. Type 'L' to view the Lesser GNU General Public License version 2.1. Type 'yes' to accept this license offer. Type 'no' to decline this license offer. Do you accept the terms of either license? yes Creating qmake. Please wait... Configuring Qt for X11 Let this run through, then run make .

57. Multiple Qt Installs and QMake Change qmake: make dist clean && qmake-nn qmake-x11 qmake-target qmake-qvfb Makefile + Executable project.pro cpp h ui qrc

60. Solution: Rename to qt-qvfb!

61. Configuring Qt for QVFb $ ./configure --help Usage: ... [additional platform specific options (see below)] ... Qt for Embedded Linux only: -xplatform target ... The target platform when cross-compiling. -no-feature-<feature> Do not compile in <feature>. -feature-<feature> .. Compile in <feature>. The available features are described in src/corelib/global/qfeatures.txt -embedded <arch> .... This will enable the embedded build, you must have a proper license for this switch to work. Example values for <arch>: arm mips x86 generic -armfpa ............. Target platform is uses the ARM-FPA floating point format. -no-armfpa .......... Target platform does not use the ARM-FPA floating point format. The floating point format is usually autodetected by configure. Use this to override the detected value. -little-endian ...... Target platform is little endian (LSB first). -big-endian ......... Target platform is big endian (MSB first). -host-little-endian . Host platform is little endian (LSB first). -host-big-endian .... Host platform is big endian (MSB first). You only need to specify the endianness when cross-compiling, otherwise the host endianness will be used. -no-freetype ........ Do not compile in Freetype2 support. -qt-freetype ........ Use the libfreetype bundled with Qt. * -system-freetype .... Use libfreetype from the operating system. See http://www.freetype.org/ -qconfig local ...... Use src/corelib/global/qconfig-local.h rather than the default (full). -depths <list> ...... Comma-separated list of supported bit-per-pixel depths, from: 1, 4, 8, 12, 15, 16, 18, 24, 32 and 'all'. -qt-decoration-<style> ....Enable a decoration <style> in the QtGui library, by default all available decorations are on. Possible values for <style>: [ styled windows default ] -plugin-decoration-<style> Enable decoration <style> as a plugin to be linked to at run time. Possible values for <style>: [ default styled windows ] -no-decoration-<style> ....Disable decoration <style> entirely. Possible values for <style>: [ styled windows default ] -no-opengl .......... Do not support OpenGL. -opengl <api> ....... Enable OpenGL ES support With no parameter, this will attempt to auto-detect OpenGL ES 1.x or 2.x. Use es1, es1cl or es2 for <api> to override auto-detection. NOTE: A QGLScreen driver for the hardware is required to support OpenGL ES on Qt for Embedded Linux. -qt-gfx-<driver> ... Enable a graphics <driver> in the QtGui library. Possible values for <driver>: [ linuxfb transformed qvfb vnc multiscreen ] -plugin-gfx-<driver> Enable graphics <driver> as a plugin to be linked to at run time. Possible values for <driver>: [ ahi directfb hybrid linuxfb powervr qvfb transformed vnc ] -no-gfx-<driver> ... Disable graphics <driver> entirely. Possible values for <driver>: [ linuxfb transformed qvfb vnc multiscreen ] -qt-kbd-<driver> ... Enable a keyboard <driver> in the QtGui library. Possible values for <driver>: [ tty usb sl5000 yopy vr41xx qvfb ] -plugin-kbd-<driver> Enable keyboard <driver> as a plugin to be linked to at runtime. Possible values for <driver>: [ linuxis sl5000 usb vr41xx yopy ] -no-kbd-<driver> ... Disable keyboard <driver> entirely. Possible values for <driver>: [ tty usb sl5000 yopy vr41xx qvfb ] -qt-mouse-<driver> ... Enable a mouse <driver> in the QtGui library. Possible values for <driver>: [ pc bus linuxtp yopy vr41xx tslib qvfb ] -plugin-mouse-<driver> Enable mouse <driver> as a plugin to be linked to at runtime. Possible values for <driver>: [ bus linuxis linuxtp pc tslib vr41xx yopy ] -no-mouse-<driver> ... Disable mouse <driver> entirely. Possible values for <driver>: [ pc bus linuxtp yopy vr41xx tslib qvfb ] -iwmmxt ............ Compile using the iWMMXt instruction set (available on some XScale CPUs). -no-glib ........... Do not compile Glib support. + -glib .............. Compile Glib support.

62. Configuring Qt for QVFb -prefix path -no-... -nomake examples -nomake demos -qt-freetype -qt-zlib -no-gif -qt-libjpeg -qt-libpng -depths 8,16 -qt-kbd-qvfb -qt-mouse-qvfb -qt-gfx-qvfb Use the same tricks as with Qt for X11 Use Qt's versions of 3 rd party libraries Depths limits you to what your target has -qt-*-qvfb builds with drivers for the virtual target There are more options – now configure and make

64. Can contain all drivers (avoid loading modules)

66. Avoid all extras (usually not shipping with emacs)

73. BeagleBoard

74. AT91SAM9263-EK

75. Toradex Colibri

76. Configuring Qt for Embedded Linux Use the same setup as for your QVFb Prepare for an embedded target and a cross compilation -prefix path -no-... -nomake examples -nomake demos -qt-freetype ... -depths 8,16 -embedded arch -xplatform mkspec

78. Gives you architecture specific implementations, e.g. qatomic_i386.h

81. Qt library

82. Qt plug-ins

83. Fonts

84. Environment variables

85. Command line arguments

88. QWS_KEYBOARD

91. Run qmake-qvfb * (specify full path) && make

92. Start QVFb and pick a skin

93. Start ./ wiggly -qws

94. Enjoy!

95. For the brave and curious, try running

96. make distclean && qmake-x11 && make

97. ./wiggly * I like to create soft links to the different qmakes and name them qmake-x11, qmake-qvfb, etcetera

98. Thank you for your attention! www.thelins.se