[52d29f7] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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[6732c094] | 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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[52d29f7] | 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 |
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[9a36df5f] | 7 | <!ENTITY libpng-download-http "&sourceforge-repo;/libpng/libpng-&libpng-version;.tar.xz">
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[8042630] | 8 | <!ENTITY libpng-download-ftp " ">
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[c3185e4] | 9 | <!ENTITY libpng-md5sum "430a9b76b78533235cd4b9b26ce75c7e">
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| 10 | <!ENTITY libpng-size "900 KB">
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[9a36df5f] | 11 | <!ENTITY libpng-buildsize "14 MB (additional 1 MB for the tests)">
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[c3185e4] | 12 | <!ENTITY libpng-time "0.1 SBU (additional 0.2 SBU for the tests)">
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[31ab0f7] | 13 |
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[c3185e4] | 14 | <!ENTITY apng-version "1.6.17">
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[4890200] | 15 |
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[8e22d1a] | 16 | <!ENTITY apng-patch
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[5e998c2a] | 17 | "&sourceforge-repo;/libpng-apng/libpng-&apng-version;-apng.patch.gz">
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[52d29f7] | 18 | ]>
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| 19 |
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[f45b1953] | 20 | <sect1 id="libpng" xreflabel="libpng-&libpng-version;">
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[6b71f17] | 21 | <?dbhtml filename="libpng.html"?>
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| 22 |
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| 23 | <sect1info>
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| 24 | <othername>$LastChangedBy$</othername>
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| 25 | <date>$Date$</date>
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| 26 | </sect1info>
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| 27 |
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[8042630] | 28 | <title>libpng-&libpng-version;</title>
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[6b71f17] | 29 |
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| 30 | <indexterm zone="libpng">
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[a98acfe7] | 31 | <primary sortas="a-libpng">libpng</primary>
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[6b71f17] | 32 | </indexterm>
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| 33 |
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[13d6079] | 34 | <sect2 role="package">
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[8042630] | 35 | <title>Introduction to libpng</title>
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[6b71f17] | 36 |
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[de05930] | 37 | <para>
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[31ab0f7] | 38 | The <application>libpng</application> package contains libraries used
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| 39 | by other programs for reading and writing PNG files. The PNG format
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| 40 | was designed as a replacement for GIF and, to a lesser extent, TIFF,
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| 41 | with many improvements and extensions and lack of patent problems.
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[de05930] | 42 | </para>
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[6b71f17] | 43 |
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[c22db16] | 44 | &lfs77_checked; &gcc5_checked;
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[a263ccb3] | 45 |
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[6b71f17] | 46 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 47 | <itemizedlist spacing="compact">
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| 48 | <listitem>
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[b33c421] | 49 | <para>
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| 50 | Download (HTTP): <ulink url="&libpng-download-http;"/>
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| 51 | </para>
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[6b71f17] | 52 | </listitem>
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| 53 | <listitem>
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[b33c421] | 54 | <para>
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| 55 | Download (FTP): <ulink url="&libpng-download-ftp;"/>
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| 56 | </para>
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[6b71f17] | 57 | </listitem>
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| 58 | <listitem>
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[b33c421] | 59 | <para>
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| 60 | Download MD5 sum: &libpng-md5sum;
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| 61 | </para>
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[6b71f17] | 62 | </listitem>
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| 63 | <listitem>
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[b33c421] | 64 | <para>
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| 65 | Download size: &libpng-size;
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| 66 | </para>
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[6b71f17] | 67 | </listitem>
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| 68 | <listitem>
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[b33c421] | 69 | <para>
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| 70 | Estimated disk space required: &libpng-buildsize;
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| 71 | </para>
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[6b71f17] | 72 | </listitem>
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| 73 | <listitem>
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[b33c421] | 74 | <para>
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| 75 | Estimated build time: &libpng-time;
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| 76 | </para>
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[6b71f17] | 77 | </listitem>
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| 78 | </itemizedlist>
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| 79 |
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[57fc33d3] | 80 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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[b690f72] | 81 | <itemizedlist spacing="compact">
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[6b71f17] | 82 | <listitem>
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[de05930] | 83 | <para>
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| 84 | Optional patch to include animated png functionality in
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[a38269c] | 85 | <application>libpng</application> (required to use the system
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[de05930] | 86 | <application>libpng</application> in
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[a38269c] | 87 | <application>Firefox</application>): <ulink url="&apng-patch;"/>
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[de05930] | 88 | </para>
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[6b71f17] | 89 | </listitem>
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[57fc33d3] | 90 | </itemizedlist>
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[6b71f17] | 91 |
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[de05930] | 92 | <para condition="html" role="usernotes">
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| 93 | User Notes: <ulink url="&blfs-wiki;/libpng"/>
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| 94 | </para>
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[6b71f17] | 95 | </sect2>
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| 96 |
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| 97 | <sect2 role="installation">
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[8042630] | 98 | <title>Installation of libpng</title>
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[6b71f17] | 99 |
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[de05930] | 100 | <para>
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| 101 | If you want to patch libpng to support apng files, apply the patch:
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| 102 | </para>
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[d0c5ea3] | 103 |
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[5e998c2a] | 104 | <screen><userinput>gzip -cd ../libpng-&apng-version;-apng.patch.gz | patch -p1</userinput></screen>
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[d0c5ea3] | 105 |
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[de05930] | 106 | <para>
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| 107 | Install <application>libpng</application> by running the following
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| 108 | commands:
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| 109 | </para>
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[6b71f17] | 110 |
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[b33c421] | 111 | <screen><userinput>./configure --prefix=/usr --disable-static &&
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[8042630] | 112 | make</userinput></screen>
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| 113 |
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[b33c421] | 114 | <para>
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| 115 | To test the results, issue: <command>make check</command>.
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| 116 | </para>
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[6b71f17] | 117 |
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[de05930] | 118 | <para>
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| 119 | Now, as the <systemitem class="username">root</systemitem> user:
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| 120 | </para>
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[6b71f17] | 121 |
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[8042630] | 122 | <screen role="root"><userinput>make install &&
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[a98acfe7] | 123 | mkdir -v /usr/share/doc/libpng-&libpng-version; &&
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| 124 | cp -v README libpng-manual.txt /usr/share/doc/libpng-&libpng-version;</userinput></screen>
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[31ab0f7] | 125 |
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[6b71f17] | 126 | </sect2>
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| 127 |
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[5eda319] | 128 | <sect2 role="commands">
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| 129 | <title>Command Explanations</title>
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| 130 |
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[de05930] | 131 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 132 | href="../../xincludes/static-libraries.xml"/>
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[b33c421] | 133 |
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[5eda319] | 134 | </sect2>
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| 135 |
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[6b71f17] | 136 | <sect2 role="content">
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| 137 | <title>Contents</title>
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| 138 |
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| 139 | <segmentedlist>
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| 140 | <segtitle>Installed Programs</segtitle>
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| 141 | <segtitle>Installed Libraries</segtitle>
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[9de6f91] | 142 | <segtitle>Installed Directories</segtitle>
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[6b71f17] | 143 |
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| 144 | <seglistitem>
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[de05930] | 145 | <seg>
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[7fe0ce3b] | 146 | libpng-config (symlink), libpng16-config, pngfix and png-fix-itxt
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[de05930] | 147 | </seg>
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| 148 | <seg>
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[31ab0f7] | 149 | libpng.so and libpng16.so
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[de05930] | 150 | </seg>
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| 151 | <seg>
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[31ab0f7] | 152 | /usr/include/libpng16 and
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[de05930] | 153 | /usr/share/doc/libpng-&libpng-version;
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| 154 | </seg>
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[6b71f17] | 155 | </seglistitem>
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| 156 | </segmentedlist>
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| 157 |
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| 158 | <variablelist>
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| 159 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 160 | <?dbfo list-presentation="list"?>
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| 161 | <?dbhtml list-presentation="table"?>
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| 162 |
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[1a021f3c] | 163 | <varlistentry id="pngfix">
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| 164 | <term><command>pngfix</command></term>
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| 165 | <listitem>
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| 166 | <para>
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| 167 | tests, optimizes and optionally fixes the zlib header in PNG files.
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[a407a1c] | 168 | Optionally, when fixing, strips ancillary chunks from the file.
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[1a021f3c] | 169 | </para>
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| 170 | <indexterm zone="libpng pngfix">
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| 171 | <primary sortas="b-pngfix">pngfix</primary>
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| 172 | </indexterm>
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| 173 | </listitem>
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| 174 | </varlistentry>
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| 175 |
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| 176 | <varlistentry id="png-fix-itxt">
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| 177 | <term><command>png-fix-itxt</command></term>
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| 178 | <listitem>
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| 179 | <para>
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| 180 | fixes PNG files that have an incorrect length field in the
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| 181 | iTXt chunks.
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| 182 | </para>
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| 183 | <indexterm zone="libpng png-fix-itxt">
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| 184 | <primary sortas="b-png-fix-itxt">png-fix-itxt</primary>
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| 185 | </indexterm>
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| 186 | </listitem>
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| 187 | </varlistentry>
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| 188 |
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[6b71f17] | 189 | <varlistentry id="libpng-config">
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| 190 | <term><command>libpng-config</command></term>
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| 191 | <listitem>
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[de05930] | 192 | <para>
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[31ab0f7] | 193 | is a shell script that provides configuration information
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| 194 | for applications wanting to use
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| 195 | <application>libpng</application>.
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[de05930] | 196 | </para>
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[31ab0f7] | 197 | <indexterm zone="libpng libpng-config">
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| 198 | <primary sortas="b-libpng-config">libpng-config</primary>
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[6b71f17] | 199 | </indexterm>
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| 200 | </listitem>
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| 201 | </varlistentry>
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| 202 |
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[31ab0f7] | 203 | <varlistentry id="libpng-lin">
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| 204 | <term><filename class="libraryfile">libpng.so</filename></term>
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[6b71f17] | 205 | <listitem>
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[de05930] | 206 | <para>
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[31ab0f7] | 207 | contain routines used to create and manipulate PNG
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| 208 | format graphics files.
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[de05930] | 209 | </para>
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[31ab0f7] | 210 | <indexterm zone="libpng libpng-lin">
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| 211 | <primary sortas="c-libpng">libpng.so</primary>
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[6b71f17] | 212 | </indexterm>
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| 213 | </listitem>
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| 214 | </varlistentry>
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[b33c421] | 215 |
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[6b71f17] | 216 | </variablelist>
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[b33c421] | 217 |
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[6b71f17] | 218 | </sect2>
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[b33c421] | 219 |
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[f45b1953] | 220 | </sect1>
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