source: general/prog/python3.xml@ 89d0029

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Last change on this file since 89d0029 was 89d0029, checked in by Ken Moffat <ken@…>, 4 years ago

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git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@20363 af4574ff-66df-0310-9fd7-8a98e5e911e0

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6
7 <!ENTITY python3-download-http
8 "https://www.python.org/ftp/python/&python3-version;/Python-&python3-version;.tar.xz">
9 <!ENTITY python3-download-ftp " ">
10 <!ENTITY python3-md5sum "eb8c2a6b1447d50813c02714af4681f3">
11 <!ENTITY python3-size "16 MB">
12 <!ENTITY python3-buildsize "175 MB (add 29 MB for tests)">
13 <!ENTITY python3-time "0.9 SBU (using parallelism=4; add 1.7 SBU for tests)">
14
15 <!ENTITY python3htmldoc-download-http
16 "https://docs.python.org/ftp/python/doc/&python3-version;/python-&python3-version;-docs-html.tar.bz2">
17]>
18
19<sect1 id="python3" xreflabel="Python-&python3-version;">
20 <?dbhtml filename="python3.html" ?>
21
22 <sect1info>
23 <othername>$LastChangedBy$</othername>
24 <date>$Date$</date>
25 </sect1info>
26
27 <title>Python-&python3-version;</title>
28
29 <indexterm zone="python3">
30 <primary sortas="a-Python3">Python3</primary>
31 </indexterm>
32
33 <sect2 role="package">
34 <title>Introduction to Python 3</title>
35
36 <para>
37 The <application>Python 3</application> package contains the
38 <application>Python</application> development environment.
39 This is useful for object-oriented programming, writing scripts,
40 prototyping large programs or developing entire applications.
41 </para>
42
43 <note><para><application>Python 3</application> was installed in LFS.
44 The only reason to rebuild it here is if optional modules
45 are needed.</para></note>
46
47 &lfs83_checked;
48
49 <bridgehead renderas="sect3">Package Information</bridgehead>
50 <itemizedlist spacing="compact">
51 <listitem>
52 <para>
53 Download (HTTP): <ulink url="&python3-download-http;"/>
54 </para>
55 </listitem>
56 <listitem>
57 <para>
58 Download (FTP): <ulink url="&python3-download-ftp;"/>
59 </para>
60 </listitem>
61 <listitem>
62 <para>
63 Download MD5 sum: &python3-md5sum;
64 </para>
65 </listitem>
66 <listitem>
67 <para>
68 Download size: &python3-size;
69 </para>
70 </listitem>
71 <listitem>
72 <para>
73 Estimated disk space required: &python3-buildsize;
74 </para>
75 </listitem>
76 <listitem>
77 <para>
78 Estimated build time: &python3-time;
79 </para>
80 </listitem>
81 </itemizedlist>
82<!--
83 <bridgehead renderas="sect3">Additional Downloads</bridgehead>
84 <itemizedlist spacing="compact">
85 <title>Optional HTML Documentation</title>
86 <listitem>
87 <para>
88 Download (HTTP): <ulink url="&python3htmldoc-download-http;"/>
89 </para>
90 </listitem>
91 </itemizedlist>
92-->
93 <bridgehead renderas="sect3">Python 3 Dependencies</bridgehead>
94<!--
95 <bridgehead renderas="sect4">Recommended</bridgehead>
96 <para role="recommended">
97 <xref linkend="libffi"/>
98 </para>
99-->
100 <bridgehead renderas="sect4">Optional</bridgehead>
101 <para role="optional">
102 <xref linkend="bluez"/>,
103 <xref linkend="gdb"/> (required for some tests), and
104 <xref linkend="valgrind"/>
105 </para>
106
107 <bridgehead renderas="sect4">Optional (For Additional Modules)</bridgehead>
108 <para role="optional">
109 <xref linkend="db"/> and
110 <xref linkend="sqlite"/>
111 </para>
112
113 <para condition="html" role="usernotes">User Notes:
114 <ulink url="&blfs-wiki;/Python3"/>
115 </para>
116 </sect2>
117
118 <sect2 role="installation">
119 <title>Installation of Python 3</title>
120
121 <para>
122 Install <application>Python 3</application> by running the following
123 commands:
124 </para>
125
126<screen><userinput>CXX="/usr/bin/g++" \
127./configure --prefix=/usr \
128 --enable-shared \
129 --with-system-expat \
130 --with-system-ffi \
131 --with-ensurepip=yes &amp;&amp;
132make</userinput></screen>
133
134 <para>
135 The test suite must be run separately, using an X terminal (see below).
136 </para>
137
138 <para>
139 Now, as the <systemitem class="username">root</systemitem> user:
140 </para>
141
142<screen role="root"><userinput>make install &amp;&amp;
143chmod -v 755 /usr/lib/libpython&python3-majorver;m.so &amp;&amp;
144chmod -v 755 /usr/lib/libpython3.so</userinput></screen>
145<!--
146 <para>
147 If you have downloaded the preformatted documentation from
148 <ulink url="http://docs.python.org/download.html"/>, install it
149 as the <systemitem class="username">root</systemitem> user:
150 </para>
151
152<screen role="root"><userinput>install -v -dm755 /usr/share/doc/python-&python3-version;/html &amp;&amp;
153tar - -strip-components=1 \
154 - -no-same-owner \
155 - -no-same-permissions \
156 -C /usr/share/doc/python-&python3-version;/html \
157 -xvf ../python-&python3-version;-docs-html.tar.bz2</userinput></screen>
158-->
159 <para>
160 The test suite must be run separately from the build, either before or
161 after the package is built and installed. Do not run
162 <command>make install</command> after running the test suite. To build
163 and install the package, you need to start with a fresh or clean source
164 tree. For the test, you also need a clean source code, so either start by
165 removing the source code directory and starting over, by uncompressing
166 the source tarball or by running <command>make clean</command>. Then
167 configure again, adding <quote>--with-pydebug</quote> to the
168 <command>configure</command> switches above, run <command>make</command>,
169 then <command>make test</command>. Remember that tests must be executed
170 using an X terminal. One test fails. The test SBU highly depends on the
171 speed of the internet connection.
172 </para>
173
174 </sect2>
175
176 <sect2 role="commands">
177 <title>Command Explanations</title>
178
179 <para>
180 <command> CXX="/usr/bin/g++" ./configure ...</command>: Avoid an annoying
181 message during configuration.
182 </para>
183
184 <para>
185 <parameter>--with-system-expat</parameter>: This switch enables linking
186 against the system version of <application>Expat</application>.
187 </para>
188
189 <para>
190 <parameter>--with-system-ffi</parameter>: This switch enables linking
191 against system version of <application>libffi</application>.
192 </para>
193
194 <para>
195 <parameter>--with-ensurepip=yes</parameter> : This switch enables building
196 <command>pip</command> and <command>setuptools</command> packaging programs.
197 <command>setuptools</command> is needed for building some Python modules.
198 </para>
199
200 <para>
201 <option>--with-dbmliborder=bdb:gdbm:ndbm</option>: Use this switch
202 if you want to build <application>Python</application> DBM Module
203 against <application>Berkeley DB</application> instead of
204 <application>GDBM</application>.
205 </para>
206
207 <para>
208 <command>chmod ...</command>: Fix permissions for shared libraries to be
209 consistent with other libraries.
210 </para>
211
212 </sect2>
213
214 <sect2 role="configuration">
215 <title>Configuring Python 3</title>
216
217 <para>
218 In order for <command>python3</command> to find the installed
219 documentation, create the following version independent symlink:
220 </para>
221
222<screen role="root"><userinput>ln -svfn python-&python3-version; /usr/share/doc/python-3</userinput></screen>
223
224 <para>
225 and add the following environment variable to the individual user's or
226 system's profile:
227 </para>
228
229<screen role="root"><userinput>export PYTHONDOCS=/usr/share/doc/python-3/html</userinput></screen>
230
231 </sect2>
232
233 <sect2 role="content">
234 <title>Contents</title>
235
236 <segmentedlist>
237 <segtitle>Installed Programs</segtitle>
238 <segtitle>Installed Libraries</segtitle>
239 <segtitle>Installed Directories</segtitle>
240
241 <seglistitem>
242 <seg>
243 2to3 (symlink),
244 2to3-&python3-majorver;,
245
246 idle3 (symlink), and
247 idle&python3-majorver;
248
249 pydoc3 (symlink),
250 pydoc&python3-majorver;,
251
252 python3 (symlink);
253 python&python3-majorver; and python&python3-majorver;m (hardlinked);
254
255 python3-config (symlink),
256 python&python3-majorver;-config (symlink),
257 python&python3-majorver;m-config,
258
259 pyvenv (symlink),
260 pyvenv-&python3-majorver;,
261 </seg>
262 <seg>
263 libpython&python3-majorver;m.so and libpython3.so
264 </seg>
265 <seg>
266 /usr/include/python&python3-majorver;m,
267 /usr/lib/python&python3-majorver;, and
268 /usr/share/doc/python-&python3-version;
269 </seg>
270 </seglistitem>
271 </segmentedlist>
272
273 <variablelist>
274 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
275 <?dbfo list-presentation="list"?>
276 <?dbhtml list-presentation="table"?>
277
278 <varlistentry id="idle3">
279 <term><command>idle3</command></term>
280 <listitem>
281 <para>
282 is a wrapper script that opens a <application>Python</application>
283 aware GUI editor. For this script to run, you must have installed
284 <application>Tk</application> before Python so that the Tkinter
285 Python module is built.
286 </para>
287 <indexterm zone="python3 idle3">
288 <primary sortas="b-idle3">idle3</primary>
289 </indexterm>
290 </listitem>
291 </varlistentry>
292
293 <varlistentry id="pydoc3">
294 <term><command>pydoc3</command></term>
295 <listitem>
296 <para>
297 is the <application>Python</application> documentation
298 tool.
299 </para>
300 <indexterm zone="python3 pydoc3">
301 <primary sortas="b-pydoc3">pydo3c</primary>
302 </indexterm>
303 </listitem>
304 </varlistentry>
305
306 <varlistentry id="python3-prog">
307 <term><command>python3</command></term>
308 <listitem>
309 <para>
310 is an interpreted, interactive, object-oriented programming
311 language.
312 </para>
313 <indexterm zone="python3 python3-prog">
314 <primary sortas="b-python3">python3</primary>
315 </indexterm>
316 </listitem>
317 </varlistentry>
318
319 <varlistentry id="python-ver">
320 <term><command>python&python3-majorver;</command></term>
321 <listitem>
322 <para>
323 is a version-specific name for the <command>python</command>
324 program.
325 </para>
326 <indexterm zone="python3 python-ver">
327 <primary
328 sortas="b-python&python3-majorver;">python&python3-majorver;</primary>
329 </indexterm>
330 </listitem>
331 </varlistentry>
332
333 <varlistentry id="pyvenv">
334 <term><command>pyvenv</command></term>
335 <listitem>
336 <para>
337 creates virtual <application>Python</application> environments in
338 one or more target directories.
339 </para>
340 <indexterm zone="python3 pyvenv">
341 <primary
342 sortas="b-python&python3-majorver;">python&python3-majorver;</primary>
343 </indexterm>
344 </listitem>
345 </varlistentry>
346
347 </variablelist>
348
349 </sect2>
350
351</sect1>
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