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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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7 ** This file is part of the documentation of the Qt Toolkit. |
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16 ** GNU Lesser General Public License Usage |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 /*! |
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43 \page qt-embedded-install.html |
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44 |
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45 \title Installing Qt on Embedded Linux |
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46 \ingroup qt-embedded-linux |
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47 \ingroup installation |
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48 \brief How to install Qt on Embedded Linux. |
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49 |
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50 This document describes how to install \l{Qt for Embedded Linux} in your |
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51 development environment: |
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52 |
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53 \tableofcontents |
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54 |
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55 Please see the \l{Cross-Compiling Qt for Embedded Linux Applications}{cross |
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56 compiling} and \l{Deploying Qt for Embedded Linux Applications}{deployment} |
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57 documentation for details on how to install \l{Qt for Embedded Linux} on |
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58 your target device. |
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59 |
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60 Note also that this installation procedure is written for Linux, |
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61 and that it may need to be modified for other platforms. |
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62 |
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63 \section1 Step 1: Installing the License File (commercial editions only) |
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64 |
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65 If you have the commercial edition of \l{Qt for Embedded Linux}, the first step |
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66 is to install your license file as \c $HOME/.qt-license. |
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67 |
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68 For the open source version you do not need a license file. |
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69 |
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70 \section1 Step 2: Unpacking the Archive |
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71 |
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72 First uncompress the archive in the preferred location, then |
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73 unpack it: |
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74 |
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75 \snippet doc/src/snippets/code/doc_src_emb-install.qdoc 0 |
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76 |
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77 This document assumes that the archive is unpacked in the |
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78 following directory: |
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79 |
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80 \snippet doc/src/snippets/code/doc_src_emb-install.qdoc 1 |
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81 |
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82 \section1 Step 3: Building the Library |
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83 |
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84 Before building the \l{Qt for Embedded Linux} library, run the \c |
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85 ./configure script to configure the library for your development |
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86 architecture. You can list all of the configuration system's |
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87 options by typing \c {./configure -help}. |
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88 |
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89 Note that by default, \l{Qt for Embedded Linux} is configured for |
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90 installation in the \c{/usr/local/Trolltech/QtEmbedded-%VERSION%} |
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91 directory, but this can be changed by using the \c{-prefix} |
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92 option. Alternatively, the \c{-prefix-install} option can be used |
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93 to specify a "local" installation within the source directory. |
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94 |
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95 The configuration system is also designed to allow you to specify |
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96 your platform architecture: |
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97 |
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98 \snippet doc/src/snippets/code/doc_src_emb-install.qdoc 2 |
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99 |
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100 In general, all Linux systems which have framebuffer support can |
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101 use the \c generic architecture. Other typical architectures are |
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102 \c x86, \c arm and \c mips. |
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103 |
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104 \note If you want to build Qt for Embedded Linux for use with a virtual |
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105 framebuffer, pass the \c{-qvfb} option to the \c configure |
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106 script. |
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107 |
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108 To create the library and compile all the demos, examples, tools, |
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109 and tutorials, type: |
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110 |
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111 \snippet doc/src/snippets/code/doc_src_emb-install.qdoc 3 |
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112 |
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113 On some systems the \c make utility is named differently, e.g. \c |
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114 gmake. The \c configure script tells you which \c make utility to |
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115 use. |
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116 |
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117 If you did not configure \l{Qt for Embedded Linux} using the \c{-prefix-install} |
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118 option, you need to install the library, demos, examples, tools, |
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119 and tutorials in the appropriate place. To do this, type: |
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120 |
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121 \snippet doc/src/snippets/code/doc_src_emb-install.qdoc 4 |
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122 |
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123 and enter the root password. |
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124 |
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125 \note You can use the \c INSTALL_ROOT environment variable to specify |
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126 the location of the installed files when invoking \c{make install}. |
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127 |
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128 \section1 Step 4: Adjusting the Environment Variables |
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129 |
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130 In order to use \l{Qt for Embedded Linux}, the \c PATH variable must be extended |
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131 to locate \c qmake, \c moc and other \l{Qt for Embedded Linux} tools, and the \c |
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132 LD_LIBRARY_PATH must be extended for compilers that do not support |
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133 \c rpath. |
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134 |
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135 To set the \c PATH variable, add the following lines to your \c |
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136 .profile file if your shell is bash, ksh, zsh or sh: |
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137 |
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138 \snippet doc/src/snippets/code/doc_src_emb-install.qdoc 5 |
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139 |
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140 In case your shell is csh or tcsh, add the following line to the |
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141 \c .login file instead: |
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142 |
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143 \snippet doc/src/snippets/code/doc_src_emb-install.qdoc 6 |
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144 |
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145 If you use a different shell, please modify your environment |
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146 variables accordingly. |
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147 |
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148 For compilers that do not support \c rpath you must also extend |
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149 the \c LD_LIBRARY_PATH environment variable to include |
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150 \c /usr/local/Trolltech/QtEmbedded-%VERSION%/lib. Note that on Linux |
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151 with GCC, this step is not needed. |
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152 |
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153 \section1 Step 5: Building the Virtual Framebuffer |
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154 |
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155 For development and debugging, \l{Qt for Embedded Linux} provides a virtual |
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156 framebuffer as well as the option of running \l{Qt for Embedded Linux} as a VNC |
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157 server. For a description of how to install the virtual |
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158 framebuffer and how to use the VNC protocol, please consult the |
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159 documentation at: |
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160 |
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161 \list |
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162 \o \l {The Virtual Framebuffer} |
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163 \o \l {The VNC Protocol and Qt for Embedded Linux} |
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164 \endlist |
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165 |
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166 Note that the virtual framebuffer requires a Qt for X11 |
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167 installation. See \l {Installing Qt on X11 Platforms} for details. |
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168 |
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169 The Linux framebuffer, on the other hand, is enabled by default on |
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170 all modern Linux distributions. For information on older versions, |
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171 see \l http://en.tldp.org/HOWTO/Framebuffer-HOWTO.html. To test |
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172 that the Linux framebuffer is set up correctly, use the program |
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173 provided by the \l {Testing the Linux Framebuffer} document. |
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174 |
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175 That's all. \l{Qt for Embedded Linux} is now installed. |
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176 |
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177 \table 100% |
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178 \row |
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179 \o |
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180 \bold {Customizing the Qt for Embedded Linux Library} |
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181 |
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182 When building embedded applications on low-powered devices, |
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183 reducing the memory and CPU requirements is important. |
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184 |
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185 A number of options tuning the library's performance are |
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186 available. But the most direct way of saving resources is to |
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187 fine-tune the set of Qt features that is compiled. It is also |
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188 possible to make use of accelerated graphics hardware. |
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189 |
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190 \list |
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191 \o \l {Fine-Tuning Features in Qt} |
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192 \o \l {Qt Performance Tuning} |
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193 \o \l {Adding an Accelerated Graphics Driver to Qt for Embedded Linux} |
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194 \endlist |
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195 |
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196 \endtable |
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197 */ |