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158 lines
5.9 KiB
158 lines
5.9 KiB
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<title>Installing TQt/Embedded</title>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Main Classes</font></a>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Installing TQt/Embedded</h1>
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<p> This installation procedure is written for Linux. It may need
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to be modified for other platforms.
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<p> <ol type=1>
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<li> Unpack the archive if you have not done so already
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<p> <pre>
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cd <anywhere>
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gunzip qt-embedded-commercial-VERSION.tar.gz # uncompress the archive
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tar xf qt-embedded-commercial-VERSION.tar # unpack it
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</pre>
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Replace <tt>VERSION</tt> with the TQt/Embedded version number throughout.
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<p> This document assumes that the archive is installed as <tt>~/qt-embedded-commercial-VERSION</tt>.
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<li> Compile the TQt/Embedded library and examples.
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<p> <pre>
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cd ~/qt-embedded-commercial-VERSION
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export TQTDIR=~/qt-embedded-commercial-VERSION
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./configure
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make
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</pre>
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<p> The configuration system is designed to allow platform-specific options
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to be added, but in general all Linux systems which have framebuffer
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support can use the "linux-generic-g++" platform.
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The configuration system also supports cross-compilers:
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to build on Linux/x86 for the Linux/MIPSEL target, you would use:
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<pre>
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./configure -embedded mips
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</pre>
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<p> Only a small number of configurations are predefined.
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You can create your own custom configuration by adding new files
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to the <tt>mkspecs/qws/</tt> directory. Use existing similar configurations
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as a starting point.
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<p> <b>Note</b>: Due to a bug in the configure script, cross-compiling on
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a little-endian machine (e.g. x86) for a big-endian processor
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(e.g. PowerPC) will use the host's endianness instead of the
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target's. Workaround: after running configure, and before running
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make, edit <tt>$TQTDIR/include/ntqconfig.h</tt> and change the definition of
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<tt>Q_BYTE_ORDER</tt>.
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<p> <li> Enable framebuffer support.
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<p> You may need to recompile your kernel to enable the framebuffer.
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This document does not describe how to do this; the
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<a href="emb-framebuffer-howto.html">Framebuffer HOWTO page</a>
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contains a short description. (You should see
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a penguin logo at boot time when the frame buffer is enabled.)
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<p> For Matrox G100/G200/G400 use the matrox frame buffer driver.
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<p> For NVidia TNT cards use the nvidia frame buffer driver.
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<p> For Mach64 and most other cards, use the vesafb driver.
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<p> Note that some cards are only supported in VGA16 mode, this will
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not work with the current version of TQt/Embedded, since VGA/16 is
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not yet supported. You may need to upgrade your kernel, or even
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switch to an experimental kernel.
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<p> The frame buffer must also be enabled with a boot parameter. See
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<tt>/usr/src/linux/Documentation/fb</tt> for details.
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<p> The <tt>fbset</tt> program, which should be included in Linux distributions,
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may be used to switch video modes without rebooting the system. The
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video mode active when the server is started will be used. (8-bit
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modes are still experimental.) <b>Note</b>: <tt>fbset</tt> does not work
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with the vesafb driver.
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<p> <li> Change permissions.
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<p> To run TQt/Embedded, you need write access to the framebuffer device
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<tt>/dev/fb0</tt>.
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<p> You also need read access to the mouse device. (Note that
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<tt>/dev/mouse</tt> is normally a symbolic link; the actual mouse device
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must be readable.)
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<p> <li> How to run the demonstration program.
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<p> Log into a virtual console and do this:
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<p> <pre>
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cd ~/qt-embedded-commercial-VERSION/examples/launcher
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./start-demo
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</pre>
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<p> <li> Miscellaneous troubleshooting and known bugs.
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<p> To kill gpm, run the following command as root:
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<p> <pre>
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gpm -k
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</pre>
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<p> In some cases, if the server does not work, it will work when run as root.
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<p> Show processes using the framebuffer:
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<p> <pre>
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fuser -v /dev/fb0
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</pre>
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<p> Kill such processes:
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<pre>
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fuser -vk /dev/fb0
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</pre>
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or harsher:
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<pre>
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fuser -k -KILL /dev/fb0
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</pre>
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<p> Show existing semaphores:
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<pre>
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ipcs
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</pre>
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<p> Remove semaphores:
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<pre>
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ipcrm
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</pre>
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<p> The communication between client and server is done through the
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named pipe <tt>/tmp/qtembedded-username/TQtEmbedded-0</tt>; sometimes it may need to be deleted
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(e.g. if you run TQt/Embedded with root privileges then later as an unprivileged user).
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<p> <li> Customization.
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<p> The TQt/Embedded library can be reduced in size by
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<a href="emb-features.html">removing unnecessary features</a>.
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<p> <li> This document shows how to use TQt/Embedded with the Linux framebuffer. For
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development and debugging purposes it is often easier to use the <a href="emb-tqvfb.html">TQt/Embedded virtual framebuffer</a> instead.
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<p> </ol>
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<p>
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<!-- eof -->
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<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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