source: chapter08/python.xml@ 6a156bab

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Last change on this file since 6a156bab was 6a156bab, checked in by Bruce Dubbs <bdubbs@…>, 18 months ago

Mostly text updates in Chapter 8.
There are a couple of minor command changes.

git-svn-id: http://svn.linuxfromscratch.org/LFS/branches/cross2@11924 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

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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
8<sect1 id="ch-system-Python" role="wrap">
9 <?dbhtml filename="Python.html"?>
10
11 <sect1info condition="script">
12 <productname>Python</productname>
13 <productnumber>&python-version;</productnumber>
14 <address>&python-url;</address>
15 </sect1info>
16
17 <title>Python-&python-version;</title>
18
19 <indexterm zone="ch-system-Python">
20 <primary sortas="a-python">python</primary>
21 </indexterm>
22
23 <sect2 role="package">
24 <title/>
25
26 <para>The Python 3 package contains the Python development environment. It
27 is useful for object-oriented programming, writing scripts, prototyping
28 large programs, or developing entire applications.</para>
29
30 <segmentedlist>
31 <segtitle>&buildtime;</segtitle>
32 <segtitle>&diskspace;</segtitle>
33
34 <seglistitem>
35 <seg>&python-fin-sbu;</seg>
36 <seg>&python-fin-du;</seg>
37 </seglistitem>
38 </segmentedlist>
39
40 </sect2>
41
42 <sect2 role="installation">
43 <title>Installation of Python 3</title>
44
45 <para>Prepare Python for compilation:</para>
46
47<screen><userinput remap="configure">./configure --prefix=/usr \
48 --enable-shared \
49 --with-system-expat \
50 --with-system-ffi \
51 --with-ensurepip=yes</userinput></screen>
52
53 <variablelist>
54 <title>The meaning of the configure options:</title>
55
56 <varlistentry>
57 <term><parameter>--with-system-expat</parameter></term>
58 <listitem>
59 <para>This switch enables linking against system version of
60 <application>Expat</application>.</para>
61 </listitem>
62 </varlistentry>
63
64 <varlistentry>
65 <term><parameter>--with-system-ffi</parameter></term>
66 <listitem>
67 <para>This switch enables linking against system version of
68 <application>libffi</application>.</para>
69 </listitem>
70 </varlistentry>
71
72 <varlistentry>
73 <term><parameter>--with-ensurepip=yes</parameter></term>
74 <listitem>
75 <para>This switch enables building <command>pip</command> and
76 <command>setuptools</command> packaging programs.</para>
77 </listitem>
78 </varlistentry>
79
80 </variablelist>
81
82 <para>Compile the package:</para>
83
84<screen><userinput remap="make">make</userinput></screen>
85
86 <para>To test the results, issue <command>make test</command>.
87 Some tests requiring a network connection or additional packages are
88 skipped. The test named test_normalization fails because network
89 configuration is not completed yet. For more comprehensive results,
90 the test can be rerun when Python 3 is reinstalled in BLFS.</para>
91
92 <para>Install the package:</para>
93
94<screen><userinput remap="install">make install
95chmod -v 755 /usr/lib/libpython&python-minor;.so
96chmod -v 755 /usr/lib/libpython3.so
97ln -sfv pip&python-minor; /usr/bin/pip3</userinput></screen>
98
99 <variablelist>
100 <title>The meaning of the install commands:</title>
101<!-- ====== Change 8m if Python minor version changes ======= -->
102 <varlistentry>
103 <term><command>chmod -v 755 /usr/lib/libpython3.{8.,}so</command></term>
104 <listitem>
105 <para>Fix permissions for libraries to be consistent with other
106 libraries.</para>
107 </listitem>
108 </varlistentry>
109
110 </variablelist>
111
112 <para>If desired, install the preformatted documentation:</para>
113
114<screen><userinput remap="install">install -v -dm755 /usr/share/doc/python-&python-version;/html
115
116tar --strip-components=1 \
117 --no-same-owner \
118 --no-same-permissions \
119 -C /usr/share/doc/python-&python-version;/html \
120 -xvf ../python-&python-version;-docs-html.tar.bz2</userinput></screen>
121
122 <variablelist>
123 <title>The meaning of the documentation install commands:</title>
124
125 <varlistentry>
126 <term><option>--no-same-owner</option> and <option>--no-same-permissions</option></term>
127 <listitem>
128 <para>Ensure the installed files have the correct ownership and
129 permissions. Without these options, using <application>tar</application>
130 will install the package files with the upstream creator's values.
131 </para>
132 </listitem>
133 </varlistentry>
134
135 </variablelist>
136
137 </sect2>
138
139 <sect2 id="contents-python" role="content">
140 <title>Contents of Python 3</title>
141
142 <segmentedlist>
143 <segtitle>Installed Programs</segtitle>
144 <segtitle>Installed Library</segtitle>
145 <segtitle>Installed Directories</segtitle>
146
147 <seglistitem>
148 <seg>
149 2to3, idle3, pip3, pydoc3, python3, and python3-config
150 </seg>
151 <seg>
152 libpython&python-minor;.so and libpython3.so
153 </seg>
154 <seg>
155 /usr/include/python&python-minor;,
156 /usr/lib/python3, and
157 /usr/share/doc/python-&python-version;
158 </seg>
159 </seglistitem>
160 </segmentedlist>
161
162 <variablelist>
163 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
164 <?dbfo list-presentation="list"?>
165 <?dbhtml list-presentation="table"?>
166
167 <varlistentry id="python-2to3">
168 <term><command>2to3</command></term>
169 <listitem>
170 <para>
171 is a <application>Python</application> program that reads
172 <application>Python 2.x</application> source code and applies a
173 series of fixes to transform it into
174 valid <application>Python 3.x</application> code.
175 </para>
176 <indexterm zone="ch-system-Python">
177 <primary sortas="b-2to3">2to3</primary>
178 </indexterm>
179 </listitem>
180 </varlistentry>
181
182 <varlistentry id="idle3">
183 <term><command>idle3</command></term>
184 <listitem>
185 <para>
186 is a wrapper script that opens a <application>Python</application>
187 aware GUI editor. For this script to run, you must have installed
188 <application>Tk</application> before Python so that the Tkinter
189 Python module is built.
190 </para>
191 <indexterm zone="ch-system-Python">
192 <primary sortas="b-idle3">idle3</primary>
193 </indexterm>
194 </listitem>
195 </varlistentry>
196
197 <varlistentry id="pip3">
198 <term><command>pip3</command></term>
199 <listitem>
200 <para>
201 The package installer for Python. You can use pip to install
202 packages from Python Package Index and other indexes.
203 </para>
204 <indexterm zone="ch-system-Python">
205 <primary sortas="b-pip3">pip3</primary>
206 </indexterm>
207 </listitem>
208 </varlistentry>
209
210 <varlistentry id="pydoc3">
211 <term><command>pydoc3</command></term>
212 <listitem>
213 <para>
214 is the <application>Python</application> documentation tool.
215 </para>
216 <indexterm zone="ch-system-Python">
217 <primary sortas="b-pydoc3">pydoc3</primary>
218 </indexterm>
219 </listitem>
220 </varlistentry>
221
222 <varlistentry id="python3">
223 <term><command>python3</command></term>
224 <listitem>
225 <para>
226 is an interpreted, interactive, object-oriented programming
227 language.
228 </para>
229 <indexterm zone="ch-system-Python">
230 <primary sortas="b-python3">python3</primary>
231 </indexterm>
232 </listitem>
233 </varlistentry>
234
235 </variablelist>
236
237 </sect2>
238
239</sect1>
240
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