mirror of
https://github.com/Zeckmathederg/glfs.git
synced 2025-01-24 15:12:11 +08:00
366 lines
12 KiB
XML
366 lines
12 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY python2-download-http
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"https://www.python.org/ftp/python/&python2-version;/Python-&python2-version;.tar.xz">
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<!ENTITY python2-download-ftp " ">
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<!ENTITY python2-md5sum "fd6cc8ec0a78c44036f825e739f36e5a">
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<!ENTITY python2-size "12.2 MB">
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<!ENTITY python2-buildsize "228 MB (add 17 MB for tests)">
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<!ENTITY python2-time "0.5 SBU (Using parallelism=4; add 5.9 SBU for tests)">
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<!ENTITY python2htmldoc-download-http
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"https://docs.python.org/ftp/python/doc/&python2-version;/python-&python2-version;-docs-html.tar.bz2">
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]>
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<sect1 id="python2" xreflabel="Python-&python2-version;">
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<?dbhtml filename="python2.html" ?>
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<sect1info>
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<date>$Date$</date>
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</sect1info>
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<title>Python-&python2-version;</title>
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<indexterm zone="python2">
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<primary sortas="a-Python2">Python2</primary>
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</indexterm>
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<sect2 role="package">
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<title>Introduction to Python 2</title>
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<para>
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The <application>Python 2</application> package contains the
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<application>Python</application> development environment. It is useful
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for object-oriented programming, writing scripts, prototyping large
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programs or developing entire applications. This version is for backward
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compatibility with other dependent packages.
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</para>
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<note>
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<para>
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Python2 has been deprecated by the upstream developers.
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Support for Python2 was discontinued on January 1st, 2020.
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</para>
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<para>
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BLFS is attempting to use Python3 as much as possible, but some
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packages have not been updated to support Python3.
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</para>
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</note>
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&lfs101_checked;
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<bridgehead renderas="sect3">Package Information</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>
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Download (HTTP): <ulink url="&python2-download-http;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download (FTP): <ulink url="&python2-download-ftp;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download MD5 sum: &python2-md5sum;
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</para>
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</listitem>
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<listitem>
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<para>
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Download size: &python2-size;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated disk space required: &python2-buildsize;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated build time: &python2-time;
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</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">Additional Downloads</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>
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Required patch:
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<ulink url="&patch-root;/Python-&python2-version;-security_fixes-1.patch"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Optional HTML Documentation: <ulink url="&python2htmldoc-download-http;"/>
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</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">Python 2 Dependencies</bridgehead>
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<!--
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<bridgehead renderas="sect4">Recommended</bridgehead>
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<para role="recommended">
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<xref linkend="libffi"/>
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</para>
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-->
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<bridgehead renderas="sect4">Optional</bridgehead>
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<para role="optional">
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<xref linkend="bluez"/> and
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<xref linkend="valgrind"/>
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</para>
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<bridgehead renderas="sect4">Optional (For Additional Modules)</bridgehead>
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<para role="optional">
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<xref linkend="sqlite"/> and
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<xref linkend="tk"/>
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</para>
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<para condition="html" role="usernotes">
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User Notes: <ulink url="&blfs-wiki;/Python"/>
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</para>
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</sect2>
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<sect2 role="installation">
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<title>Installation of Python 2</title>
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<!--
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<caution>
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<para>
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After installing this package or
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updating <application>pip2</application> with the command
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<command>pip2 install - -upgrade pip</command>, it will remove
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<application>pip3</application> installed in LFS. To reset
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<application>pip</application> and <application>pip3</application>,
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run, as the <systemitem class="username">root</systemitem> user:
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</para>
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<screen role="nodump"><userinput>python3 -m pip install - -force pip</userinput></screen>
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</caution>
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-->
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<para>
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First, disable the installation of a script that overwrites a more
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recent script:
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</para>
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<screen><userinput>sed -i '/2to3/d' ./setup.py</userinput></screen>
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<para>
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Install <application>Python 2</application> by running the following
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commands:
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</para>
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<screen><userinput>patch -Np1 -i ../Python-&python2-version;-security_fixes-1.patch &&
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./configure --prefix=/usr \
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--enable-shared \
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--with-system-expat \
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--with-system-ffi \
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--enable-unicode=ucs4 &&
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make</userinput></screen>
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<para>
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If you invoke the tests, they will run through twice.
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To test the results, issue: <command>make -k test</command>.
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</para>
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<para>
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Now, as the <systemitem class="username">root</systemitem> user:
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</para>
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<screen role="root"><userinput>make altinstall &&
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ln -s python2.7 /usr/bin/python2 &&
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ln -s python2.7-config /usr/bin/python2-config &&
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chmod -v 755 /usr/lib/libpython&python2-majorver;.so.1.0</userinput></screen>
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<para>
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Since <application>Python 2</application> is in maintenance mode, and
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<application>Python 3</application> is recommended by upstream for
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development, you probably do not need to install the documentation.
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However, if you still want to install documentation for both
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<application>Python</application> versions, be sure to define the
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<envar>PYTHONDOCS</envar>
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variable for the version you want to use, each time you need to consult
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the documentation. If you have downloaded the preformatted documentation
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from <ulink url="http://docs.python.org/download.html"/>, install it
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as the <systemitem class="username">root</systemitem> user:
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</para>
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<screen role="root"><userinput>install -v -dm755 /usr/share/doc/python-&python2-version; &&
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tar --strip-components=1 \
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--no-same-owner \
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--directory /usr/share/doc/python-&python2-version; \
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-xvf ../python-&python2-version;-docs-html.tar.bz2 &&
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find /usr/share/doc/python-&python2-version; -type d -exec chmod 0755 {} \; &&
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find /usr/share/doc/python-&python2-version; -type f -exec chmod 0644 {} \;</userinput></screen>
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</sect2>
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<sect2 role="commands">
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<title>Command Explanations</title>
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<para>
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<parameter>--with-system-expat</parameter>: This switch enables linking
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against system version of <application>Expat</application>.
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</para>
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<para>
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<parameter>--with-system-ffi</parameter>: This switch enables linking
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against system version of <application>libffi</application>.
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</para>
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<para>
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<parameter>--enable-unicode=ucs4</parameter>: This switch enables
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32bit Unicode support in <application>Python</application>.
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</para>
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<para>
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<option>--with-ensurepip=yes</option> : This switch enables building
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<command>pip</command> and <command>setuptools</command> packaging programs.
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<command>setuptools</command> is needed for building some Python modules.
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This switch is not recommended because this version of Python is being phased out.
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</para>
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<para>
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<option>--with-dbmliborder=bdb:gdbm:ndbm</option>: Use this switch
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if you want to build <application>Python</application> DBM Module
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against <application>Berkeley DB</application> instead of
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<application>GDBM</application>.
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</para>
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<para>
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<command>make altinstall</command>: This make target omits some default
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symbolic links that may interfere with Python 3.
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</para>
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<para>
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<command>chmod ...</command>: Fix permissions for libraries to be
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consistent with other libraries.
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</para>
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</sect2>
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<sect2 role="configuration">
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<title>Configuring Python 2</title>
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<para>
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In order for <command>python</command> to find the installed
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documentation, you must add the following environment variable to
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individual user's or the system's profile:
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</para>
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<screen role="root"><userinput>export PYTHONDOCS=/usr/share/doc/python-&python2-version;</userinput></screen>
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</sect2>
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<sect2 role="content">
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<title>Contents</title>
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<segmentedlist>
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<segtitle>Installed Programs</segtitle>
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<segtitle>Installed Library</segtitle>
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<segtitle>Installed Directories</segtitle>
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<seglistitem>
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<seg>
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pydoc,
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python2 (symlink),
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python2-config (symlink),
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python&python2-majorver;,
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python&python2-majorver;-config,
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smtpd.py, and
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idle
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</seg>
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<seg>
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libpython&python2-majorver;.so
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</seg>
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<seg>
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/usr/{include,lib}/python&python2-majorver; and
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/usr/share/doc/python-&python2-version;
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</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="idle">
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<term><command>idle</command></term>
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<listitem>
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<para>
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is a wrapper script that opens a <application>Python</application>
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aware GUI editor. For this script to run, you must have installed
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<application>Tk</application> before Python so that the Tkinter
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Python module is built
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</para>
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<indexterm zone="python2 idle">
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<primary sortas="b-idle">idle</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="pydoc2">
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<term><command>pydoc</command></term>
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<listitem>
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<para>
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is the <application>Python</application> documentation tool
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</para>
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<indexterm zone="python2 pydoc2">
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<primary sortas="b-pydoc2">pydoc</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="python">
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<term><command>python2</command></term>
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<listitem>
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<para>
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is an interpreted, interactive, object-oriented programming
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language
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</para>
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<indexterm zone="python2 python">
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<primary sortas="b-python2">python</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="python2-ver">
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<term><command>python&python2-majorver;</command></term>
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<listitem>
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<para>
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is a version-specific name for the <command>python</command>
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program
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</para>
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<indexterm zone="python2 python2-ver">
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<primary sortas="b-python&python2-majorver;">python&python2-majorver;</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="smtpd.py">
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<term><command>smtpd.py</command></term>
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<listitem>
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<para>
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is an SMTP proxy implemented in <application>Python</application>
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</para>
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<indexterm zone="python2 smtpd.py">
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<primary sortas="b-smtpd.py">smtpd.py</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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</sect1>
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