mirror of
https://github.com/Zeckmathederg/glfs.git
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09f09986af
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@22858 af4574ff-66df-0310-9fd7-8a98e5e911e0
264 lines
7.7 KiB
XML
264 lines
7.7 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 libjpeg-download-http "&sourceforge-dl;/libjpeg-turbo/libjpeg-turbo-&libjpeg-turbo-version;.tar.gz">
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<!ENTITY libjpeg-download-ftp " ">
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<!ENTITY libjpeg-md5sum "d01d9e0c28c27bc0de9f4e2e8ff49855">
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<!ENTITY libjpeg-size "2.1 MB">
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<!ENTITY libjpeg-buildsize "31 MB (with tests)">
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<!ENTITY libjpeg-time "0.3 SBU (using parallelism=4; with tests)">
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]>
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<sect1 id="libjpeg" xreflabel="libjpeg-turbo-&libjpeg-turbo-version;">
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<?dbhtml filename="libjpeg.html"?>
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<sect1info>
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<othername>$LastChangedBy$</othername>
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<date>$Date$</date>
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</sect1info>
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<title>libjpeg-turbo-&libjpeg-turbo-version;</title>
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<indexterm zone="libjpeg">
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<primary sortas="a-libjpeg-turbo">libjpeg-turbo</primary>
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</indexterm>
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<sect2 role="package">
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<title>Introduction to libjpeg-turbo</title>
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<para>
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<application>libjpeg-turbo</application> is a fork of the original
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IJG <application>libjpeg</application> which uses SIMD to accelerate
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baseline JPEG compression and decompression.
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<application>libjpeg</application> is a library that implements JPEG
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image encoding, decoding and transcoding.
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</para>
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&lfs91_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="&libjpeg-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="&libjpeg-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: &libjpeg-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: &libjpeg-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: &libjpeg-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: &libjpeg-time;
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</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">libjpeg-turbo Dependencies</bridgehead>
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<bridgehead renderas="sect4">Required</bridgehead>
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<para role="required">
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<xref linkend="cmake"/> and
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<xref linkend="nasm"/> or
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<xref linkend="yasm"/>
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</para>
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<para condition="html" role="usernotes">User Notes:
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<ulink url="&blfs-wiki;/libjpeg-turbo"/>
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</para>
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</sect2>
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<sect2 role="installation">
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<title>Installation of libjpeg-turbo</title>
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<para>
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Install <application>libjpeg-turbo</application> by running the
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following commands:
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</para>
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<screen><userinput>mkdir build &&
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cd build &&
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cmake -DCMAKE_INSTALL_PREFIX=/usr \
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-DCMAKE_BUILD_TYPE=RELEASE \
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-DENABLE_STATIC=FALSE \
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-DCMAKE_INSTALL_DOCDIR=/usr/share/doc/libjpeg-turbo-&libjpeg-turbo-version; \
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-DCMAKE_INSTALL_DEFAULT_LIBDIR=lib \
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.. &&
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make</userinput></screen>
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<para>
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To test the results, issue: <command>make test</command>.
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</para>
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<note><para>
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If installing <application>libjpeg-turbo</application> over an older jpeg
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installation, not all library symbolic links are updated properly. To fix
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this before installation, run the following as the <systemitem
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class="username">root</systemitem> user:</para>
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<screen role="root"><userinput>rm -f /usr/lib/libjpeg.so*</userinput></screen>
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</note>
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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 install</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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<option>-DWITH_JPEG8=ON</option>: This switch enables compatibility
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with <application>libjpeg</application> version 8.
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</para>
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<!--
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="../../xincludes/static-libraries.xml"/>
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-->
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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 Libraries</segtitle>
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<segtitle>Installed Directories</segtitle>
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<seglistitem>
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<seg>
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cjpeg, djpeg, jpegtran, rdjpgcom, tjbench, and wrjpgcom
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</seg>
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<seg>
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libjpeg.so and libturbojpeg.so
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</seg>
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<seg>
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/usr/share/doc/libjpeg-turbo-&libjpeg-turbo-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="cjpeg">
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<term><command>cjpeg</command></term>
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<listitem>
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<para>
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compresses image files to produce a JPEG/JFIF file on the
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standard output. Currently supported input file formats are: PPM
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(PBMPLUS color format), PGM (PBMPLUS gray-scale format),
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BMP, and Targa.
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</para>
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<indexterm zone="libjpeg cjpeg">
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<primary sortas="b-cjpeg">cjpeg</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="djpeg">
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<term><command>djpeg</command></term>
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<listitem>
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<para>
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decompresses image files from JPEG/JFIF format to either
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PPM (PBMPLUS color format), PGM (PBMPLUS gray-scale format),
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BMP, or Targa format.
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</para>
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<indexterm zone="libjpeg djpeg">
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<primary sortas="b-djpeg">djpeg</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="jpegtran">
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<term><command>jpegtran</command></term>
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<listitem>
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<para>
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is used for lossless transformation of JPEG files.
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</para>
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<indexterm zone="libjpeg jpegtran">
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<primary sortas="b-jpegtran">jpegtran</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="rdjpgcom">
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<term><command>rdjpgcom</command></term>
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<listitem>
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<para>
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displays text comments from within a JPEG file.
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</para>
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<indexterm zone="libjpeg rdjpgcom">
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<primary sortas="b-rdjpgcom">rdjpgcom</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="tjbench">
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<term><command>tjbench</command></term>
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<listitem>
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<para>
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is used to benchmark the performance of libjpeg-turbo.
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</para>
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<indexterm zone="libjpeg tjbench">
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<primary sortas="b-tjbench">tjbench</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="wrjpgcom">
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<term><command>wrjpgcom</command></term>
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<listitem>
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<para>
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inserts text comments into a JPEG file.
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</para>
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<indexterm zone="libjpeg wrjpgcom">
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<primary sortas="b-wrjpgcom">wrjpgcom</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="libjpeg-lib">
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<term><filename class="libraryfile">libjpeg.so</filename></term>
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<listitem>
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<para>
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contains functions used for reading and writing JPEG images.
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</para>
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<indexterm zone="libjpeg libjpeg-lib">
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<primary sortas="c-libjpeg">libjpeg.so</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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