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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Qt Toolkit - Installing Qt/Embedded</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: white; color: black; }--></style></head><body bgcolor="#ffffff"><p><table width="100%"><tr><td><a href="index.html"><img width="100" height="100" src="qtlogo.png"alt="Home" border="0"><img width="100"height="100" src="face.png" alt="Home" border="0"></a><td valign="top"><div align="right"><img src="dochead.png" width="472" height="27"><br><a href="classes.html"><b>Classes</b></a>- <a href="annotated.html">Annotated</a>- <a href="hierarchy.html">Tree</a>- <a href="functions.html">Functions</a>- <a href="index.html">Home</a>- <a href="topicals.html"><b>Structure</b> <font face="Arial,Helvetica,Geneva,Swiss,SunSans-Regular" align="center" size=32>Qte</font></a></div></table><h1 align="center"> Installing Qt/Embedded</h1><br clear="all"><p>This installation procedure is written for Linux. It may needto be modified for other platforms.<p><h3> Unpack the archive if you have not done so already:</h3><pre> cd <anywhere> gunzip qt-embedded-<i>version</i>-commercial.tar.gz # uncompress the archive tar xf qt-embedded-<i>version</i>-commercial.tar # unpack it</pre><p> This document assumes that the archive is installed as <tt>~/qt-<i>version</i></tt>.</p><p><h3> Compile the Qt/Embedded library and examples</h3><p><pre> cd ~/qt-<i>version</i> export QTDIR=~/qt-<i>version</i> ./configure make</pre><p>The configuration system is designed to allow platform-specific optionsto be added, but in general all Linux system which have framebuffersupport can use the "linux-generic-g++" platform.The configuration system also supports cross-compilers:to build <i>on</i> Linux/x86 <i>for</i> the Linux/MIPSEL target, you would use:<pre> ./configure -platform linux-x86-g++ -xplatform linux-mips-g++</pre><p>Only a small number of configurations are predefined, all much the same.Configuration files are found in <tt>configs/</tt>.<p><h3> Enable Linux framebuffer support</h3><p> For application development, we recommend that you use the<a href="qvfb-qws.html">Qt/Embedded virtual framebuffer</a>. But to actually put Qt/Embedded on a device running Linux, you need to ensure that the Linux kernel has framebuffer support.<p> You may need to recompile your kernel to enable the framebuffer.<p> Handheld devices running Linux, such as the SL-5000D and the iPAQ, and most other embedded Linux systems that have a graphical display will already have a framebuffer.<p> This document does not describe how to do this; the <a href=HOWTO-framebuffer.html>HOWTO-Framebuffer page</a> contains a short description. (You should see a penguin logo at boot time when the frame buffer is enabled.)<p> For Matrox G100/G200/G400 use the matrox frame buffer driver.<p> For NVidia TNT cards use the nvidia frame buffer driver.<p> For Mach64 and most other cards, use the vesafb driver.<p> For VGA-compatible cards that are not VESA 2.0 compliant, use the VGA16 driver.<p> The frame buffer may also need a boot parameter to be enabled. See <tt>/usr/src/linux/Documentation/fb</tt> for details.<p> The <tt>fbset</tt> program, which is included in most Linux/x86 distributions, may be used to switch video modes without rebooting the system. The video mode active when the server is started will be used. Note: <tt>fbset</tt> does not work with the vesafb driver.</p><p><h3> Change permissions</h3><p> To run Qt/Embedded, you need write access to the framebuffer device <tt>/dev/fb0</tt>. <p> You also need read access to the mouse device. (Note that <tt>/dev/mouse</tt> is normally a symbolic link; the actual mouse device must be readable.)</p><p><h3> How to run the demonstration program</h3><p> Log into a virtual console, or run<a href="qvfb-qws.html">Qt/Embedded virtual framebuffer</a>. and then run the commands:<p><pre> cd ~/qt-<i>version</i>/examples/launcher ./start-demo</pre><p><h3> Miscellaneous troubleshooting and known bugs</h3><p> To kill gpm, run the following command as root:<p><pre> gpm -k</pre><p> In some cases, if the server does not work, it will work when run as root. If this happens, there are permissions problems with your filesystem (eg. /dev/fb0 is not writeable by you).<p> Show processes using the framebuffer:<p><pre> fuser -v /dev/fb0</pre><p> Kill such processes:<pre> fuser -vk /dev/fb0</pre> or harsher:<pre> fuser -k -KILL /dev/fb0</pre><p> Show existing semaphores:<p><pre> ipcs </pre><p> Remove semaphores:<p><pre> ipcrm</pre><p> The communication between client and server is done through the named pipe <tt>/tmp/.QtEmbedded</tt>; sometimes it may need to be deleted (eg. if you run Qt/Embedded as root then later as an unprivileged user).</p><p><h3> Customization </h3><p> The Qt/Embedded library can be reduced in size by <a href=features.html>removing unneeded features</a>.<p><address><hr><div align="center"><table width="100%" cellspacing="0" border="0"><tr><td>Copyright ⌨️ 快捷键说明
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