[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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[b690f72] | 7 | <!ENTITY libpng-download-http
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[b33c421] | 8 | "&sourceforge-repo;/libpng/libpng-&libpng-version;.tar.xz">
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[8042630] | 9 | <!ENTITY libpng-download-ftp " ">
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[b33c421] | 10 | <!ENTITY libpng-md5sum "0b607a685da977f1bfc96e1c47055183">
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| 11 | <!ENTITY libpng-size "692 KB">
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| 12 | <!ENTITY libpng-buildsize "9.5 MB">
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[5eda319] | 13 | <!ENTITY libpng-time "0.1 SBU">
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[b690f72] | 14 | <!ENTITY apng-patch
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[b33c421] | 15 | "&sourceforge-repo;/libpng-apng/libpng-&libpng-version;-apng.patch.gz">
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[52d29f7] | 16 | ]>
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| 17 |
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[f45b1953] | 18 | <sect1 id="libpng" xreflabel="libpng-&libpng-version;">
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[6b71f17] | 19 | <?dbhtml filename="libpng.html"?>
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| 20 |
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| 21 | <sect1info>
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| 22 | <othername>$LastChangedBy$</othername>
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| 23 | <date>$Date$</date>
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| 24 | </sect1info>
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| 25 |
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[8042630] | 26 | <title>libpng-&libpng-version;</title>
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[6b71f17] | 27 |
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| 28 | <indexterm zone="libpng">
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| 29 | <primary sortas="a-Libpng">Libpng</primary>
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| 30 | </indexterm>
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| 31 |
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[13d6079] | 32 | <sect2 role="package">
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[8042630] | 33 | <title>Introduction to libpng</title>
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[6b71f17] | 34 |
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[de05930] | 35 | <para>
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| 36 | The <application>libpng</application> package contains libraries used by
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| 37 | other programs for reading and writing PNG files. The PNG format was
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| 38 | designed as a replacement for GIF and, to a lesser extent, TIFF, with many
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| 39 | improvements and extensions and lack of patent problems.
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| 40 | </para>
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[6b71f17] | 41 |
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[5811f7e] | 42 | &lfs72_checked;
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[a263ccb3] | 43 |
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[6b71f17] | 44 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 45 | <itemizedlist spacing="compact">
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| 46 | <listitem>
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[b33c421] | 47 | <para>
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| 48 | Download (HTTP): <ulink url="&libpng-download-http;"/>
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| 49 | </para>
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[6b71f17] | 50 | </listitem>
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| 51 | <listitem>
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[b33c421] | 52 | <para>
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| 53 | Download (FTP): <ulink url="&libpng-download-ftp;"/>
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| 54 | </para>
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[6b71f17] | 55 | </listitem>
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| 56 | <listitem>
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[b33c421] | 57 | <para>
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| 58 | Download MD5 sum: &libpng-md5sum;
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| 59 | </para>
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[6b71f17] | 60 | </listitem>
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| 61 | <listitem>
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[b33c421] | 62 | <para>
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| 63 | Download size: &libpng-size;
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| 64 | </para>
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[6b71f17] | 65 | </listitem>
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| 66 | <listitem>
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[b33c421] | 67 | <para>
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| 68 | Estimated disk space required: &libpng-buildsize;
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| 69 | </para>
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[6b71f17] | 70 | </listitem>
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| 71 | <listitem>
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[b33c421] | 72 | <para>
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| 73 | Estimated build time: &libpng-time;
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| 74 | </para>
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[6b71f17] | 75 | </listitem>
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| 76 | </itemizedlist>
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| 77 |
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[57fc33d3] | 78 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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[b690f72] | 79 | <itemizedlist spacing="compact">
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[6b71f17] | 80 | <listitem>
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[de05930] | 81 | <para>
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| 82 | Optional patch to include animated png functionality in
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[a38269c] | 83 | <application>libpng</application> (required to use the system
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[de05930] | 84 | <application>libpng</application> in
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[a38269c] | 85 | <application>Firefox</application>): <ulink url="&apng-patch;"/>
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[de05930] | 86 | </para>
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[6b71f17] | 87 | </listitem>
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[57fc33d3] | 88 | </itemizedlist>
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[6b71f17] | 89 |
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[de05930] | 90 | <para condition="html" role="usernotes">
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| 91 | User Notes: <ulink url="&blfs-wiki;/libpng"/>
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| 92 | </para>
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[6b71f17] | 93 | </sect2>
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| 94 |
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| 95 | <sect2 role="installation">
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[8042630] | 96 | <title>Installation of libpng</title>
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[6b71f17] | 97 |
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[de05930] | 98 | <para>
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| 99 | If you want to patch libpng to support apng files, apply the patch:
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| 100 | </para>
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[d0c5ea3] | 101 |
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[cd34755] | 102 | <screen><userinput>gzip -cd ../libpng-&libpng-version;-apng.patch.gz | patch -p1 &&
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| 103 | START=$(awk '/@/' scripts/symbols.def | sort -k2.3n | tail -1 | cut -d "@" -f2) &&
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| 104 | awk -v v="$START" '/^PNG(_.+)?_EXPORTA?\(/ {gsub(/PNG(_.+)?_EXPORTA?\(/, ""); gsub(/,/, ""); \
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| 105 | if($1 > v) print $3 " @"$1}' png.h | sort -k2.3n >> scripts/symbols.def</userinput></screen>
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[d0c5ea3] | 106 |
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[de05930] | 107 | <para>
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| 108 | Install <application>libpng</application> by running the following
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| 109 | commands:
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| 110 | </para>
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[6b71f17] | 111 |
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[b33c421] | 112 | <screen><userinput>./configure --prefix=/usr --disable-static &&
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[8042630] | 113 | make</userinput></screen>
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| 114 |
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[b33c421] | 115 | <para>
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| 116 | To test the results, issue: <command>make check</command>.
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| 117 | </para>
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[6b71f17] | 118 |
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[de05930] | 119 | <para>
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| 120 | Now, as the <systemitem class="username">root</systemitem> user:
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| 121 | </para>
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[6b71f17] | 122 |
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[8042630] | 123 | <screen role="root"><userinput>make install &&
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[b690f72] | 124 | mkdir /usr/share/doc/libpng-&libpng-version; &&
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| 125 | cp README libpng-manual.txt /usr/share/doc/libpng-&libpng-version;</userinput></screen>
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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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[cd34755] | 131 | <para>
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| 132 | <command>awk -v ...</command>: This command fixes the testsuite
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| 133 | when APNG patch is applied.
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| 134 | </para>
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| 135 |
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[de05930] | 136 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 137 | href="../../xincludes/static-libraries.xml"/>
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[b33c421] | 138 |
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[5eda319] | 139 | </sect2>
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| 140 |
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[6b71f17] | 141 | <sect2 role="content">
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| 142 | <title>Contents</title>
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| 143 |
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| 144 | <segmentedlist>
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| 145 | <segtitle>Installed Programs</segtitle>
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| 146 | <segtitle>Installed Libraries</segtitle>
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[9de6f91] | 147 | <segtitle>Installed Directories</segtitle>
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[6b71f17] | 148 |
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| 149 | <seglistitem>
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[de05930] | 150 | <seg>
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[b33c421] | 151 | libpng-config and libpng15-config
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[de05930] | 152 | </seg>
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| 153 | <seg>
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[b33c421] | 154 | libpng.so and libpng15.so
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[de05930] | 155 | </seg>
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| 156 | <seg>
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| 157 | /usr/include/libpng15 and
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| 158 | /usr/share/doc/libpng-&libpng-version;
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| 159 | </seg>
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[6b71f17] | 160 | </seglistitem>
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| 161 | </segmentedlist>
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| 162 |
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| 163 | <variablelist>
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| 164 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 165 | <?dbfo list-presentation="list"?>
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| 166 | <?dbhtml list-presentation="table"?>
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| 167 |
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| 168 | <varlistentry id="libpng-config">
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| 169 | <term><command>libpng-config</command></term>
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| 170 | <listitem>
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[5eda319] | 171 | <para>is a symlink to <command>libpng15-config</command>.</para>
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[6b71f17] | 172 | <indexterm zone="libpng libpng-config">
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[b960e3ec] | 173 | <primary sortas="b-libpng-config">libpng-config</primary>
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[6b71f17] | 174 | </indexterm>
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| 175 | </listitem>
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| 176 | </varlistentry>
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| 177 |
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[5eda319] | 178 | <varlistentry id="libpng15-config">
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| 179 | <term><command>libpng15-config</command></term>
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[6b71f17] | 180 | <listitem>
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[de05930] | 181 | <para>
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| 182 | is a shell script that provides configuration information for
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| 183 | applications wanting to use <application>libpng</application>.
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| 184 | </para>
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[5eda319] | 185 | <indexterm zone="libpng libpng15-config">
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| 186 | <primary sortas="b-libpng15-config">libpng15-config</primary>
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[6b71f17] | 187 | </indexterm>
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| 188 | </listitem>
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| 189 | </varlistentry>
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| 190 |
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[5eda319] | 191 | <varlistentry id="libpng15">
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[b690f72] | 192 | <term><filename class="libraryfile">libpng.so and
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[5eda319] | 193 | libpng15.so</filename></term>
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[6b71f17] | 194 | <listitem>
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[de05930] | 195 | <para>
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| 196 | contain routines used to create and manipulate PNG format graphics
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| 197 | files.
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| 198 | </para>
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[5eda319] | 199 | <indexterm zone="libpng libpng15">
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| 200 | <primary sortas="c-libpng15">libpng15.so</primary>
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[6b71f17] | 201 | </indexterm>
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| 202 | </listitem>
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| 203 | </varlistentry>
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[b33c421] | 204 |
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[6b71f17] | 205 | </variablelist>
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[b33c421] | 206 |
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[6b71f17] | 207 | </sect2>
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[b33c421] | 208 |
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[f45b1953] | 209 | </sect1>
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