source: x/lib/qt.xml@ 5cd0959d

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Last change on this file since 5cd0959d was 5cd0959d, checked in by Archaic <archaic@…>, 18 years ago

Resetting keywords

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