1 | <?xml version="1.0" encoding="UTF-8"?>
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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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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 |
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7 | <!ENTITY protobuf-download-http "https://github.com/protocolbuffers/protobuf/releases/download/v&protobuf-version;/protobuf-&protobuf-version;.tar.gz">
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8 | <!ENTITY protobuf-md5sum "c7feee9c4a6856d39e2b9d6876a487f5">
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9 | <!ENTITY protobuf-size "6.0 MB">
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10 | <!ENTITY protobuf-buildsize "79 MB">
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11 | <!ENTITY protobuf-time "1.6 SBU (with parallelism=4)">
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12 | ]>
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13 |
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14 | <sect1 id="protobuf" xreflabel="Protobuf-&protobuf-version;">
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15 | <?dbhtml filename="protobuf.html"?>
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16 |
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17 | <title>Protobuf-&protobuf-version;</title>
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18 |
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19 | <indexterm zone="protobuf">
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20 | <primary sortas="a-protobuf">Protobuf</primary>
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21 | </indexterm>
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22 |
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23 | <sect2 role="package">
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24 | <title>Introduction to Protobuf</title>
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25 |
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26 | <para>
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27 | The <application>Protobuf</application> package contains utilities and
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28 | libraries for using data in Google's data interchange format.
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29 | </para>
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30 |
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31 | &lfs121_checked;
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32 |
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33 | <bridgehead renderas="sect3">Package Information</bridgehead>
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34 | <itemizedlist spacing="compact">
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35 | <listitem>
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36 | <para>
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37 | Download (HTTP): <ulink url="&protobuf-download-http;"/>
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38 | </para>
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39 | </listitem>
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40 | <listitem>
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41 | <para>
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42 | Download MD5 sum: &protobuf-md5sum;
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43 | </para>
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44 | </listitem>
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45 | <listitem>
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46 | <para>
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47 | Download size: &protobuf-size;
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48 | </para>
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49 | </listitem>
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50 | <listitem>
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51 | <para>
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52 | Estimated disk space required: &protobuf-buildsize;
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53 | </para>
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54 | </listitem>
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55 | <listitem>
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56 | <para>
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57 | Estimated build time: &protobuf-time;
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58 | </para>
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59 | </listitem>
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60 | </itemizedlist>
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61 |
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62 | <bridgehead renderas="sect3">Protobuf Dependencies</bridgehead>
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63 |
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64 | <bridgehead renderas="sect4">Required</bridgehead>
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65 | <para role="required">
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66 | <xref linkend="abseil-cpp"/> and
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67 | <xref linkend="cmake"/>
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68 | </para>
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69 |
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70 | <bridgehead renderas="sect4">Optional</bridgehead>
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71 | <para role="optional">
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72 | <ulink url="https://github.com/google/googletest">gtest (for tests)</ulink>
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73 | </para>
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74 |
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75 | </sect2>
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76 |
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77 | <sect2 role="installation">
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78 | <title>Installation of Protobuf</title>
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79 |
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80 | <para>
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81 | Install <application>Protobuf</application> by running the following
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82 | commands:
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83 | </para>
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84 |
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85 | <screen><userinput>mkdir build &&
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86 | cd build &&
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87 |
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88 | cmake -D CMAKE_INSTALL_PREFIX=/usr \
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89 | -D CMAKE_BUILD_TYPE=Release \
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90 | -D CMAKE_SKIP_INSTALL_RPATH=ON \
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91 | -D protobuf_BUILD_TESTS=OFF \
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92 | -D protobuf_ABSL_PROVIDER=package \
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93 | -D protobuf_BUILD_LIBUPB=OFF \
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94 | -D protobuf_BUILD_SHARED_LIBS=ON \
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95 | -D utf8_range_ENABLE_INSTALL=OFF \
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96 | -G Ninja .. &&
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97 | ninja</userinput></screen>
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98 |
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99 | <para>
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100 | This package does come with a test suite, but it requires
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101 | <ulink url="https://github.com/google/googletest">gtest</ulink>, which
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102 | is not part of BLFS.
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103 | </para>
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104 |
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105 | <para>
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106 | Now, as the &root; user:
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107 | </para>
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108 |
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109 | <screen role="root"><userinput>sed 's/utf8_range//' -i *.pc &&
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110 | ninja install</userinput></screen>
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111 |
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112 | </sect2>
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113 |
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114 | <sect2 role="commands">
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115 | <title>Command Explanations</title>
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116 |
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117 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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118 | href="../../xincludes/cmake-skip-install-rpath.xml"/>
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119 |
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120 | <para>
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121 | <command>sed 's/utf8_range//' -i *.pc</command>: This command removes a
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122 | leftover reference to libutf8_range from the pkg-config files installed
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123 | by this package.
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124 | </para>
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125 |
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126 | <para>
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127 | <parameter>-D protobuf_BUILD_TESTS=OFF</parameter>: This parameter prevents
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128 | the tests from being built because
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129 | <ulink url="https://github.com/google/googletest">gtest</ulink> is not
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130 | part of BLFS.
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131 | </para>
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132 |
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133 | <para>
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134 | <parameter>-D protobuf_ABSL_PROVIDER=package</parameter>: This parameter
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135 | allows the build system to use the system-installed copy of
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136 | <xref linkend="abseil-cpp" role="nodep"/>.
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137 | </para>
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138 |
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139 | <para>
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140 | <parameter>-D protobuf_BUILD_SHARED_LIBS=ON</parameter>: This parameter
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141 | enables building shared versions of the libraries provided by this package
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142 | instead of static versions.
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143 | </para>
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144 |
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145 | <para>
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146 | <parameter>-D utf8_range_ENABLE_INSTALL=OFF</parameter>: This parameter
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147 | disables installing the utf8_range static library. The functions
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148 | provided by this library and used by protobuf is already embedded into
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149 | <filename class='libraryfile'>libprotobuf.so</filename>, so installing
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150 | a full copy of the static library is just wasting the disk space.
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151 | </para>
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152 |
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153 | </sect2>
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154 |
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155 | <sect2 role="content">
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156 | <title>Contents</title>
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157 |
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158 | <segmentedlist>
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159 | <segtitle>Installed Programs</segtitle>
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160 | <segtitle>Installed Libraries</segtitle>
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161 | <segtitle>Installed Directories</segtitle>
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162 |
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163 | <seglistitem>
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164 | <seg>
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165 | protoc-26.1.0 and protoc (a symlink to protoc-26.1.0)
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166 | </seg>
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167 | <seg>
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168 | libprotobuf.so,
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169 | libprotobuf-lite.so, and
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170 | libprotoc.so
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171 | </seg>
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172 | <seg>
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173 | /usr/include/google,
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174 | /usr/include/java,
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175 | /usr/include/upb_generator, and
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176 | /usr/lib/cmake/protobuf
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177 | </seg>
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178 | </seglistitem>
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179 | </segmentedlist>
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180 |
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181 | <variablelist>
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182 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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183 | <?dbfo list-presentation="list"?>
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184 | <?dbhtml list-presentation="table"?>
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185 |
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186 | <varlistentry id="protoc">
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187 | <term><command>protoc</command></term>
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188 | <listitem>
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189 | <para>
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190 | parses protocol buffer files and generates output for several
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191 | programming languages and formats
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192 | </para>
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193 | <indexterm zone="protobuf protoc">
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194 | <primary sortas="b-protoc">protoc</primary>
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195 | </indexterm>
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196 | </listitem>
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197 | </varlistentry>
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198 |
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199 | <varlistentry id="libprotobuf">
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200 | <term><filename class="libraryfile">libprotobuf.so</filename></term>
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201 | <listitem>
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202 | <para>
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203 | contains functions for utilizing data in Google's data interchange
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204 | format
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205 | </para>
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206 | <indexterm zone="protobuf libprotobuf">
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207 | <primary sortas="c-libprotobuf">libprotobuf.so</primary>
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208 | </indexterm>
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209 | </listitem>
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210 | </varlistentry>
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211 |
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212 | <varlistentry id="libprotobuf-lite">
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213 | <term><filename class="libraryfile">libprotobuf-lite.so</filename></term>
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214 | <listitem>
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215 | <para>
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216 | contains a simpler version of the functions for utilizing data in
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217 | Google's data interchange format
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218 | </para>
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219 | <indexterm zone="protobuf libprotobuf-lite">
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220 | <primary sortas="c-libprotobuf-lite">libprotobuf-lite.so</primary>
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221 | </indexterm>
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222 | </listitem>
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223 | </varlistentry>
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224 |
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225 | <varlistentry id="libprotoc">
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226 | <term><filename class="libraryfile">libprotoc.so</filename></term>
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227 | <listitem>
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228 | <para>
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229 | contains functions used by protoc at runtime for outputting data
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230 | for several programming languages and formats
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231 | </para>
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232 | <indexterm zone="protobuf libprotoc">
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233 | <primary sortas="c-libprotoc">libprotoc.so</primary>
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234 | </indexterm>
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235 | </listitem>
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236 | </varlistentry>
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237 | </variablelist>
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238 | </sect2>
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239 | </sect1>
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