1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 |
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7 | <!ENTITY qt-download-http "http://sunsite.rediris.es/mirror/Qt/source/qt-x11-free-&qt-version;.tar.bz2">
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8 | <!ENTITY qt-download-ftp "ftp://ftp.trolltech.com/qt/source/qt-x11-free-&qt-version;.tar.bz2">
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9 | <!ENTITY qt-md5sum "903cad618274ad84d7d13fd0027a6c3c">
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10 | <!ENTITY qt-size "14 MB">
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11 | <!ENTITY qt-buildsize "250 MB">
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12 | <!ENTITY qt-time "21.2 SBU (full), 13.4 SBU (sub-tools)">
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13 | ]>
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14 |
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15 | <sect1 id="qt" xreflabel="Qt-&qt-version;">
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16 | <sect1info>
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17 | <othername>$LastChangedBy$</othername>
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18 | <date>$Date$</date>
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19 | </sect1info>
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20 | <?dbhtml filename="qt.html" ?>
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21 | <title>Qt-&qt-version;</title>
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22 |
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23 | <sect2>
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24 | <title>Introduction to <application>Qt</application></title>
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25 |
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26 | <para>The <application>Qt</application> package contains a
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27 | <application>C++</application> <acronym>GUI</acronym> library. This is useful
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28 | for creating graphical applications or executing graphical applications that
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29 | are dynamically linked to the <application>Qt</application> library. One of the
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30 | major users of <application>Qt</application> is <application>KDE</application>.
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31 | </para>
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32 |
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33 | <sect3><title>Package information</title>
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34 | <itemizedlist spacing='compact'>
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35 | <listitem><para>Download (HTTP): <ulink url="&qt-download-http;"/></para></listitem>
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36 | <listitem><para>Download (FTP): <ulink url="&qt-download-ftp;"/></para></listitem>
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37 | <listitem><para>MD5 Sum: &qt-md5sum;</para></listitem>
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38 | <listitem><para>Download size: &qt-size;</para></listitem>
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39 | <listitem><para>Estimated Disk space required: &qt-buildsize;</para></listitem>
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40 | <listitem><para>Estimated build time: &qt-time;</para></listitem></itemizedlist>
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41 | </sect3>
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42 |
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43 | <sect3><title><application>Qt</application> dependencies</title>
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44 | <sect4><title>Required</title>
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45 | <para><xref linkend="x-installing"/></para>
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46 | </sect4>
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47 | <sect4><title>Recommended</title>
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48 | <para><xref linkend="libjpeg"/> and <xref linkend="libmng"/>.</para>
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49 | </sect4>
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50 |
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51 | <sect4><title>Optional</title>
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52 | <para><xref linkend="nas"/>, <xref linkend="cups"/>, <xref linkend="mysql"/>,
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53 | <xref linkend="postgresql"/>, <ulink url="http://sqlite.org/">SQLite</ulink>,
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54 | <ulink url="http://firebird.sourceforge.net/">Firebird</ulink>
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55 | and <ulink url="http://www.unixodbc.org/">unixODBC</ulink>.</para>
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56 | </sect4>
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57 | </sect3>
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58 | </sect2>
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59 |
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60 | <sect2>
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61 | <title>Installation of <application>Qt</application></title>
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62 |
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63 | <para>There are several ways to install a complicated package such as
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64 | <application>Qt</application>. The files are not completely position
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65 | independent. Installation procedures execute the program
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66 | <command>pkg-config</command> to determine the location of package executables,
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67 | libraries, headers, and other files. For <application>Qt</application>,
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68 | <command>pkg-config</command> will look for the file
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69 | <filename>lib/pkgconfig/qt-mt.pc</filename> which must be modified if
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70 | relocating the package. This file is set up correctly by the build process.
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71 | </para>
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72 |
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73 | <para>The default installation places the files in
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74 | <filename class='directory'>/usr/local/qt/</filename>. Many commercial
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75 | distributions place the files in the system's
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76 | <filename class='directory'>/usr</filename> hierarchy. The package can also be
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77 | installed in an arbitrary directory.</para>
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78 |
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79 | <para>This section will demonstrate two different methods.</para>
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80 |
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81 | <note><para>The build time for <application>Qt</application> is quite long. If
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82 | you want to save some time and don't want the tutorials and examples, change
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83 | the first make line to:</para>
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84 |
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85 | <para><userinput><command>make sub-tools</command></userinput></para>
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86 | </note>
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87 |
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88 | <sect3>
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89 | <title>Method 1 - Installing in the
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90 | <filename class='directory'>/usr</filename> hierarchy</title>
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91 |
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92 | <para>The advantage of this method is that no updates to the
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93 | <filename>/etc/ld.so.conf</filename> or <filename>/etc/man.conf</filename>
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94 | files are required. The package files are distributed within several
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95 | subdirectories of the <filename class='directory'>/usr</filename> hierarchy.
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96 | This is the method that most commercial distributions use.</para>
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97 |
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98 | <screen><userinput><command>sed -i "s:cp -f:install:" mkspecs/linux-g++/qmake.conf &&
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99 | bash
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100 | export PATH=$PWD/bin:$PATH &&
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101 | export LD_LIBRARY_PATH=$PWD/lib:$LD_LIBRARY_PATH &&
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102 | ./configure -prefix /usr -docdir /usr/share/doc/qt \
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103 | -headerdir /usr/include/qt -plugindir /usr/lib/qt/plugins \
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104 | -datadir /usr/share/qt -translationdir /usr/share/qt/translations \
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105 | -sysconfdir /etc/qt -qt-gif -system-zlib \
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106 | -no-exceptions -thread -plugin-imgfmt-png -system-libpng &&
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107 | find -type f -name Makefile | xargs sed -i "s@-Wl,-rpath,/usr/lib@@g" &&
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108 | make &&
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109 | make install &&
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110 | ln -sf libqt-mt.so /usr/lib/libqt.so &&
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111 | cp -r doc/man /usr/share &&
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112 | cp -r examples /usr/share/doc/qt &&
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113 | exit</command></userinput></screen>
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114 |
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115 | </sect3>
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116 |
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117 | <sect3>
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118 | <title>Method 2 - Installing in <filename class='directory'>/opt</filename></title>
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119 |
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120 | <para>This is the method recommended by the <application>Qt</application>
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121 | developers. It has the advantage of keeping all the package files consolidated
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122 | in a dedicated directory hierarchy. By using this method, an update can be made
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123 | without overwriting a previous installation and users can easily revert to a
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124 | previous version by changing one symbolic link.</para>
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125 |
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126 | <para>The <application>Qt</application> developers use a default location of
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127 | <filename class='directory'>/usr/local/qt/</filename>, however this procedure
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128 | puts the files in <filename class='directory'>/opt/qt-&qt-version;/</filename>
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129 | and then creates a symbolic link to <filename>/opt/qt/</filename>.</para>
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130 |
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131 | <screen><userinput><command>bash
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132 | export QTDIR=$PWD &&
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133 | export LD_LIBRARY_PATH=$PWD/lib:$LD_LIBRARY_PATH &&
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134 | export PATH=$PWD/bin:$PATH &&
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135 | ./configure -prefix /opt/qt-&qt-version; -qt-gif -system-libpng \
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136 | -system-libmng -system-zlib -system-libjpeg -no-exceptions \
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137 | -thread -plugin-imgfmt-png &&
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138 | make &&
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139 | make install &&
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140 | ln -sfn qt-&qt-version; /opt/qt &&
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141 | ln -s libqt-mt.so /opt/qt/lib/libqt.so &&
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142 | cp -r doc/man /opt/qt/doc &&
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143 | cp -r examples /opt/qt/doc
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144 | exit</command></userinput></screen>
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145 |
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146 | <note><para>If you're building <application>Qt</application> on top of
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147 | <acronym>LFS</acronym> >=6.0, the build will fail if you pass the
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148 | <option>--plugin-sql-<replaceable>[driver]</replaceable></option> switch to the
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149 | <command>configure</command> command.</para></note>
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150 | </sect3>
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151 |
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152 | </sect2>
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153 |
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154 | <sect2>
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155 | <title>Command explanations</title>
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156 |
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157 | <para><command>sed -i "s:cp -f:install:" mkspecs/linux-g++/qmake.conf</command>:
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158 | <command>install</command> is safer than <command>cp</command> when
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159 | libraries are in use.</para>
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160 |
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161 | <para><command>bash</command>: This command enters a sub-shell to isolate
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162 | environment changes.</para>
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163 |
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164 | <para><command>export QTDIR=$PWD</command>: This command defines where the root
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165 | of the <application>Qt</application> directory is located.</para>
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166 |
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167 | <para><command>export LD_LIBRARY_PATH=$PWD/lib:$LD_LIBRARY_PATH</command>: This
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168 | command allows the not yet installed <application>Qt</application> libraries to
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169 | be used by the not yet installed <application>Qt</application> programs.</para>
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170 |
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171 | <para><command>export PATH=$PWD/bin:$PATH</command>: This command
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172 | allows the build process to find supporting executables.</para>
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173 |
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174 | <para><parameter>-qt-gif</parameter>: This switch adds support for
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175 | <filename>gif</filename> files to the libraries.</para>
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176 |
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177 | <para><parameter>-system-zlib -system-libpng</parameter>: This switch
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178 | forces the build instructions to use the shared libraries that are on your
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179 | system instead of creating a custom set of support libraries for these
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180 | functions.</para>
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181 |
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182 | <para><parameter>-no-exceptions</parameter>: This switch disables
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183 | the exceptions coding generated by the <application>C++</application> compiler.
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184 | </para>
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185 |
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186 | <para><parameter>-thread</parameter>: This switch adds
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187 | support for multi-threading.</para>
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188 |
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189 | <para><command>find -type f -name Makefile | xargs sed -i
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190 | "s@-Wl,-rpath,/usr/lib@@g"</command>: This command removes hardcoded run-time
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191 | paths. Otherwise, <command>uic</command> always tries to run with
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192 | <application>Qt</application> libraries in <filename>/usr/lib</filename>.</para>
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193 |
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194 | <para><command>ln -s libqt-mt.so /usr/lib/libqt.so</command>: This command
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195 | allows <command>configure</command> scripts to find a working
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196 | <application>Qt</application> installation.</para>
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197 |
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198 | <para><command>cp -r doc/man /usr/share (or /opt/qt/doc)</command>: This command
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199 | installs the man pages which are missed by <command>make install</command>.
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200 | </para>
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201 |
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202 | <para><command>cp -r examples /usr/share/doc/qt (or /opt/qt/doc)</command>:
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203 | This command installs the examples which are missed by
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204 | <command>make install</command>.</para>
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205 |
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206 | <para><command>exit</command>: This command returns to the parent shell
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207 | and eliminates environment variables set earlier.</para>
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208 |
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209 | </sect2>
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210 |
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211 | <sect2>
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212 | <title>Configuring <application>Qt</application></title>
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213 |
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214 | <sect3><title>Configuration Information</title>
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215 | <para>If you installed <application>Qt</application> using Method 2, you need
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216 | to update some configuration files so that <application>Qt</application> is
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217 | correctly found by other packages and system processes.</para>
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218 |
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219 | <para>Update the <filename>/etc/ld.so.conf</filename> and
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220 | <filename>/etc/man.conf</filename> files:</para>
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221 |
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222 | <screen><userinput><command>cat >> /etc/ld.so.conf << "EOF"
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223 | # Begin qt addition to /etc/ld.so.conf
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224 |
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225 | /opt/qt/lib
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226 |
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227 | # End qt addition
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228 | EOF
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229 | ldconfig
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230 |
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231 | cat >> /etc/man.conf << "EOF"
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232 | # Begin qt addition to man.conf
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233 |
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234 | MANPATH /opt/qt/doc/man
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235 |
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236 | # End qt addition to man.conf
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237 | EOF</command></userinput></screen>
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238 |
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239 | <para>Update the <envar>PKG_CONFIG_PATH</envar> environment variable in your
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240 | <filename>~/.bash_profile</filename> or <filename>/etc/profile</filename> with
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241 | the following:</para>
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242 |
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243 | <screen><userinput>PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/opt/qt/lib/pkgconfig</userinput></screen>
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244 |
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245 | <para>The <envar>QTDIR</envar> environment variable needs to be set when
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246 | building packages that depend on <application>Qt</application>. Add the
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247 | following to the <filename>.bash_profile</filename> initialization script for
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248 | each user that builds packages using the <application>Qt</application>
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249 | libraries. Alternatively, the variable can be set in the system wide
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250 | <filename>/etc/profile</filename> file.</para>
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251 |
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252 | <screen><userinput>export QTDIR=/opt/qt</userinput></screen>
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253 |
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254 | <para>If you want the <application>Qt</application> executables in your shell
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255 | search path, update the <envar>PATH</envar> environment variable in your
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256 | <filename>~/.bash_profile</filename> or <filename>/etc/profile</filename> to
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257 | include <filename class='directory'>/opt/qt/bin</filename>.</para>
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258 |
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259 | <para>As with most libraries, there is no explicit configuration to do. After
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260 | updating <filename>/etc/ld.so.conf</filename> as explained above, run
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261 | <command>/sbin/ldconfig</command> so that <command>ldd</command> can find the
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262 | shared libraries.</para>
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263 |
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264 | </sect3>
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265 |
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266 | </sect2>
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267 |
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268 | <sect2>
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269 | <title>Contents</title>
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270 |
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271 | <para>The <application>Qt</application>/<application>X11</application>
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272 | library contains <acronym>API</acronym>s necessary to use
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273 | programs based on the <application>Qt</application> <acronym>GUI</acronym>
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274 | toolkit.</para>
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275 |
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276 | <para>The <application>Qt</application> package contains
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277 | <command>assistant</command>,
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278 | <command>designer</command>,
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279 | <command>linguist</command>,
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280 | <command>lrelease</command>,
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281 | <command>lupdate</command>,
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282 | <command>moc</command>,
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283 | <command>qm2ts</command>,
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284 | <command>qmake</command>,
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285 | <command>qtconfig</command>,
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286 | <command>uic</command>, and the
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287 | <filename class="libraryfile">libqt-mt</filename> and
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288 | <filename class="libraryfile">libqui</filename> libraries.</para>
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289 |
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290 | </sect2>
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291 | </sect1>
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