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| 6 | <title>Installing Qt/Embedded</title>
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| 19 | <a href="index.html">
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| 20 | <font color="#004faf">Home</font></a>
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| 22 | <font color="#004faf">All Classes</font></a>
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| 23 | | <a href="mainclasses.html">
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| 24 | <font color="#004faf">Main Classes</font></a>
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| 26 | <font color="#004faf">Annotated</font></a>
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| 31 | </td>
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| 32 | <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Installing Qt/Embedded</h1>
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| 33 |
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| 34 |
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| 35 |
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| 36 | <p> This installation procedure is written for Linux. It may need
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| 37 | to be modified for other platforms.
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| 38 | <p> <ol type=1>
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| 39 | <li> Unpack the archive if you have not done so already
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| 40 | <p> <pre>
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| 41 | cd <anywhere>
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| 42 | gunzip qt-embedded-commercial-VERSION.tar.gz # uncompress the archive
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| 43 | tar xf qt-embedded-commercial-VERSION.tar # unpack it
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| 44 | </pre>
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| 45 |
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| 46 | Replace <tt>VERSION</tt> with the Qt/Embedded version number throughout.
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| 47 | <p> This document assumes that the archive is installed as <tt>~/qt-embedded-commercial-VERSION</tt>.
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| 48 | <li> Compile the Qt/Embedded library and examples.
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| 49 | <p> <pre>
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| 50 | cd ~/qt-embedded-commercial-VERSION
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| 51 | export QTDIR=~/qt-embedded-commercial-VERSION
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| 52 | ./configure
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| 53 | make
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| 54 | </pre>
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| 55 |
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| 56 | <p> The configuration system is designed to allow platform-specific options
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| 57 | to be added, but in general all Linux systems which have framebuffer
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| 58 | support can use the "linux-generic-g++" platform.
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| 59 | The configuration system also supports cross-compilers:
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| 60 | to build on Linux/x86 for the Linux/MIPSEL target, you would use:
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| 61 | <pre>
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| 62 | ./configure -embedded mips
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| 63 | </pre>
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| 64 |
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| 65 | <p> Only a small number of configurations are predefined.
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| 66 | You can create your own custom configuration by adding new files
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| 67 | to the <tt>mkspecs/qws/</tt> directory. Use existing similar configurations
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| 68 | as a starting point.
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| 69 | <p> <b>Note</b>: Due to a bug in the configure script, cross-compiling on
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| 70 | a little-endian machine (e.g. x86) for a big-endian processor
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| 71 | (e.g. PowerPC) will use the host's endianness instead of the
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| 72 | target's. Workaround: after running configure, and before running
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| 73 | make, edit <tt>$QTDIR/include/qconfig.h</tt> and change the definition of
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| 74 | <tt>Q_BYTE_ORDER</tt>.
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| 75 | <p> <li> Enable framebuffer support.
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| 76 | <p> You may need to recompile your kernel to enable the framebuffer.
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| 77 | This document does not describe how to do this; the
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| 78 | <a href="emb-framebuffer-howto.html">Framebuffer HOWTO page</a>
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| 79 | contains a short description. (You should see
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| 80 | a penguin logo at boot time when the frame buffer is enabled.)
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| 81 | <p> For Matrox G100/G200/G400 use the matrox frame buffer driver.
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| 82 | <p> For NVidia TNT cards use the nvidia frame buffer driver.
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| 83 | <p> For Mach64 and most other cards, use the vesafb driver.
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| 84 | <p> Note that some cards are only supported in VGA16 mode, this will
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| 85 | not work with the current version of Qt/Embedded, since VGA/16 is
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| 86 | not yet supported. You may need to upgrade your kernel, or even
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| 87 | switch to an experimental kernel.
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| 88 | <p> The frame buffer must also be enabled with a boot parameter. See
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| 89 | <tt>/usr/src/linux/Documentation/fb</tt> for details.
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| 90 | <p> The <tt>fbset</tt> program, which should be included in Linux distributions,
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| 91 | may be used to switch video modes without rebooting the system. The
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| 92 | video mode active when the server is started will be used. (8-bit
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| 93 | modes are still experimental.) <b>Note</b>: <tt>fbset</tt> does not work
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| 94 | with the vesafb driver.
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| 95 | <p> <li> Change permissions.
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| 96 | <p> To run Qt/Embedded, you need write access to the framebuffer device
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| 97 | <tt>/dev/fb0</tt>.
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| 98 | <p> You also need read access to the mouse device. (Note that
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| 99 | <tt>/dev/mouse</tt> is normally a symbolic link; the actual mouse device
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| 100 | must be readable.)
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| 101 | <p> <li> How to run the demonstration program.
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| 102 | <p> Log into a virtual console and do this:
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| 103 | <p> <pre>
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| 104 | cd ~/qt-embedded-commercial-VERSION/examples/launcher
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| 105 | ./start-demo
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| 106 | </pre>
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| 107 |
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| 108 | <p> <li> Miscellaneous troubleshooting and known bugs.
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| 109 | <p> To kill gpm, run the following command as root:
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| 110 | <p> <pre>
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| 111 | gpm -k
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| 112 | </pre>
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| 113 |
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| 114 | <p> In some cases, if the server does not work, it will work when run as root.
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| 115 | <p> Show processes using the framebuffer:
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| 116 | <p> <pre>
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| 117 | fuser -v /dev/fb0
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| 118 | </pre>
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| 119 |
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| 120 | <p> Kill such processes:
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| 121 | <pre>
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| 122 | fuser -vk /dev/fb0
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| 123 | </pre>
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| 124 |
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| 125 | or harsher:
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| 126 | <pre>
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| 127 | fuser -k -KILL /dev/fb0
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| 128 | </pre>
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| 129 |
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| 130 | <p> Show existing semaphores:
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| 131 | <pre>
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| 132 | ipcs
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| 133 | </pre>
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| 134 |
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| 135 | <p> Remove semaphores:
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| 136 | <pre>
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| 137 | ipcrm
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| 138 | </pre>
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| 139 |
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| 140 | <p> The communication between client and server is done through the
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| 141 | named pipe <tt>/tmp/qtembedded-username/QtEmbedded-0</tt>; sometimes it may need to be deleted
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| 142 | (e.g. if you run Qt/Embedded with root privileges then later as an unprivileged user).
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| 143 | <p> <li> Customization.
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| 144 | <p> The Qt/Embedded library can be reduced in size by
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| 145 | <a href="emb-features.html">removing unnecessary features</a>.
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| 146 | <p> <li> This document shows how to use Qt/Embedded with the Linux framebuffer. For
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| 147 | development and debugging purposes it is often easier to use the <a href="emb-qvfb.html">Qt/Embedded virtual framebuffer</a> instead.
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| 148 | <p> </ol>
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| 149 | <p>
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| 153 | <td>Copyright © 2007
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| 154 | <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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| 155 | <td align=right><div align=right>Qt 3.3.8</div>
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| 156 | </table></div></address></body>
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