[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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[8dfc5c3] | 7 | <!ENTITY libpng-download-http "&sourceforge-dl;/libpng/libpng-&libpng-version;.tar.xz">
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[8042630] | 8 | <!ENTITY libpng-download-ftp " ">
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[043a8722] | 9 | <!ENTITY libpng-md5sum "122e6b7837811698563083b352bc8ca2">
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| 10 | <!ENTITY libpng-size "1002 KB">
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| 11 | <!ENTITY libpng-buildsize "15 MB (with tests)">
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[9c7363e] | 12 | <!ENTITY libpng-time "less than 0.1 SBU (add 0.5 SBU for tests)">
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[31ab0f7] | 13 |
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[043a8722] | 14 | <!ENTITY apng-version "1.6.38">
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| 15 | <!ENTITY apng-md5sum "831a5f302970a91a8168647366c2e0af">
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[4890200] | 16 |
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[8e22d1a] | 17 | <!ENTITY apng-patch
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[e3586b2] | 18 | "&sourceforge-dl;/sourceforge/libpng-apng/libpng-&apng-version;-apng.patch.gz">
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[52d29f7] | 19 | ]>
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| 20 |
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[f45b1953] | 21 | <sect1 id="libpng" xreflabel="libpng-&libpng-version;">
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[6b71f17] | 22 | <?dbhtml filename="libpng.html"?>
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| 23 |
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| 24 | <sect1info>
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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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[aa0b625] | 44 | &lfs112_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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[69c0160] | 84 | Recommended 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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[1d1e909] | 87 | <application>Firefox</application>,
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| 88 | <application>Seamonkey</application>, and
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[20f09631] | 89 | <application>Thunderbird</application>): <ulink url="&apng-patch;"/>
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[de05930] | 90 | </para>
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[6b71f17] | 91 | </listitem>
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[e3586b2] | 92 | <listitem>
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| 93 | <para>
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| 94 | Patch md5sum: &apng-md5sum;
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| 95 | </para>
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| 96 | </listitem>
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[57fc33d3] | 97 | </itemizedlist>
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[6b71f17] | 98 |
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[de05930] | 99 | <para condition="html" role="usernotes">
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| 100 | User Notes: <ulink url="&blfs-wiki;/libpng"/>
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| 101 | </para>
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[6b71f17] | 102 | </sect2>
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| 103 |
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| 104 | <sect2 role="installation">
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[8042630] | 105 | <title>Installation of libpng</title>
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[6b71f17] | 106 |
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[de05930] | 107 | <para>
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[fca0f4cc] | 108 | If you want to patch libpng to support apng files, apply it here:
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[de05930] | 109 | </para>
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[d0c5ea3] | 110 |
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[e3586b2] | 111 | <screen><userinput>gzip -cd ../libpng-&apng-version;-apng.patch.gz | patch -p1</userinput></screen>
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[d0c5ea3] | 112 |
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[de05930] | 113 | <para>
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| 114 | Install <application>libpng</application> by running the following
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| 115 | commands:
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| 116 | </para>
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[6b71f17] | 117 |
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[3cf6041d] | 118 | <screen><userinput>./configure --prefix=/usr --disable-static &&
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[8042630] | 119 | make</userinput></screen>
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| 120 |
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[b33c421] | 121 | <para>
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| 122 | To test the results, issue: <command>make check</command>.
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| 123 | </para>
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[6b71f17] | 124 |
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[de05930] | 125 | <para>
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| 126 | Now, as the <systemitem class="username">root</systemitem> user:
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| 127 | </para>
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[6b71f17] | 128 |
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[8042630] | 129 | <screen role="root"><userinput>make install &&
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[a98acfe7] | 130 | mkdir -v /usr/share/doc/libpng-&libpng-version; &&
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| 131 | cp -v README libpng-manual.txt /usr/share/doc/libpng-&libpng-version;</userinput></screen>
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[31ab0f7] | 132 |
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[6b71f17] | 133 | </sect2>
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| 134 |
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[5eda319] | 135 | <sect2 role="commands">
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| 136 | <title>Command Explanations</title>
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| 137 |
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[de05930] | 138 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 139 | href="../../xincludes/static-libraries.xml"/>
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[b33c421] | 140 |
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[5eda319] | 141 | </sect2>
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| 142 |
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[6b71f17] | 143 | <sect2 role="content">
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| 144 | <title>Contents</title>
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| 145 |
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| 146 | <segmentedlist>
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| 147 | <segtitle>Installed Programs</segtitle>
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| 148 | <segtitle>Installed Libraries</segtitle>
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[9de6f91] | 149 | <segtitle>Installed Directories</segtitle>
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[6b71f17] | 150 |
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| 151 | <seglistitem>
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[de05930] | 152 | <seg>
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[7fe0ce3b] | 153 | libpng-config (symlink), libpng16-config, pngfix and png-fix-itxt
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[de05930] | 154 | </seg>
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| 155 | <seg>
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[20f09631] | 156 | libpng.so
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[de05930] | 157 | </seg>
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| 158 | <seg>
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[31ab0f7] | 159 | /usr/include/libpng16 and
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[de05930] | 160 | /usr/share/doc/libpng-&libpng-version;
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| 161 | </seg>
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[6b71f17] | 162 | </seglistitem>
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| 163 | </segmentedlist>
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| 164 |
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| 165 | <variablelist>
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| 166 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 167 | <?dbfo list-presentation="list"?>
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| 168 | <?dbhtml list-presentation="table"?>
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| 169 |
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[1a021f3c] | 170 | <varlistentry id="pngfix">
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| 171 | <term><command>pngfix</command></term>
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| 172 | <listitem>
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| 173 | <para>
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| 174 | tests, optimizes and optionally fixes the zlib header in PNG files.
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[4c24eb0a] | 175 | Optionally, when fixing, strips ancillary chunks from the file
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[1a021f3c] | 176 | </para>
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| 177 | <indexterm zone="libpng pngfix">
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| 178 | <primary sortas="b-pngfix">pngfix</primary>
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| 179 | </indexterm>
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| 180 | </listitem>
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| 181 | </varlistentry>
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| 182 |
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| 183 | <varlistentry id="png-fix-itxt">
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| 184 | <term><command>png-fix-itxt</command></term>
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| 185 | <listitem>
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| 186 | <para>
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| 187 | fixes PNG files that have an incorrect length field in the
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[4c24eb0a] | 188 | iTXt chunks
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[1a021f3c] | 189 | </para>
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| 190 | <indexterm zone="libpng png-fix-itxt">
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| 191 | <primary sortas="b-png-fix-itxt">png-fix-itxt</primary>
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| 192 | </indexterm>
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| 193 | </listitem>
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| 194 | </varlistentry>
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| 195 |
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[6b71f17] | 196 | <varlistentry id="libpng-config">
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| 197 | <term><command>libpng-config</command></term>
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| 198 | <listitem>
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[de05930] | 199 | <para>
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[31ab0f7] | 200 | is a shell script that provides configuration information
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| 201 | for applications wanting to use
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[4c24eb0a] | 202 | <application>libpng</application>
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[de05930] | 203 | </para>
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[31ab0f7] | 204 | <indexterm zone="libpng libpng-config">
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| 205 | <primary sortas="b-libpng-config">libpng-config</primary>
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[6b71f17] | 206 | </indexterm>
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| 207 | </listitem>
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| 208 | </varlistentry>
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| 209 |
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[31ab0f7] | 210 | <varlistentry id="libpng-lin">
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| 211 | <term><filename class="libraryfile">libpng.so</filename></term>
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[6b71f17] | 212 | <listitem>
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[de05930] | 213 | <para>
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[31ab0f7] | 214 | contain routines used to create and manipulate PNG
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[4c24eb0a] | 215 | format graphics files
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[de05930] | 216 | </para>
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[31ab0f7] | 217 | <indexterm zone="libpng libpng-lin">
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| 218 | <primary sortas="c-libpng">libpng.so</primary>
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[6b71f17] | 219 | </indexterm>
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| 220 | </listitem>
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| 221 | </varlistentry>
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[b33c421] | 222 |
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[6b71f17] | 223 | </variablelist>
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[b33c421] | 224 |
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[6b71f17] | 225 | </sect2>
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[b33c421] | 226 |
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[f45b1953] | 227 | </sect1>
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