1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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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 firefox-download-http "&mozilla-http;/firefox/releases/&firefox-version;esr/source/firefox-&firefox-version;esr.source.tar.xz">
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8 | <!ENTITY firefox-download-ftp " ">
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9 | <!ENTITY firefox-md5sum "bd7f2946d5485eaf68615e7c873af2d9">
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10 | <!ENTITY firefox-size "484 MB">
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11 |
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12 | <!-- NB with stylo, much of the build uses rust, and therefore cargo files.
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13 | But the extra cached cargo files, if any, seem to be minimal -->
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14 | <!ENTITY firefox-buildsize "6.4 GB (209 MB installed) without tests">
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15 | <!-- editors: with ff63 and rust-1.29, ./mach build -j4 is probably the
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16 | most practical way to get a timing on a machine with more cores, if taking
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17 | cores offline is not practical. If in doubt, round up -->
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18 | <!ENTITY firefox-time "20 SBU using -j4, without tests">
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19 | ]>
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20 |
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21 | <sect1 id="firefox" xreflabel="Firefox-&firefox-version;">
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22 | <?dbhtml filename="firefox.html" ?>
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23 |
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24 |
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25 | <!-- indicate this is the ESR variant,
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26 | The point is that the stable release differs slightly.
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27 | <title>Firefox-&firefox-version;</title>-->
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28 | <title>Firefox-&firefox-version;esr</title>
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29 |
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30 | <indexterm zone="firefox">
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31 | <primary sortas="a-Firefox">Firefox</primary>
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32 | </indexterm>
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33 |
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34 | <sect2 role="package">
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35 | <title>Introduction to Firefox</title>
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36 |
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37 | <para>
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38 | <application>Firefox</application> is a stand-alone browser based on the
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39 | <application>Mozilla</application> codebase.
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40 | </para>
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41 |
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42 | &lfs120_checked;
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43 |
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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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47 | <para>
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48 | Download (HTTP): <ulink url="&firefox-download-http;"/>
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49 | </para>
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50 | </listitem>
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51 | <listitem>
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52 | <para>
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53 | Download (FTP): <ulink url="&firefox-download-ftp;"/>
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54 | </para>
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55 | </listitem>
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56 | <listitem>
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57 | <para>
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58 | Download MD5 sum: &firefox-md5sum;
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59 | </para>
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60 | </listitem>
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61 | <listitem>
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62 | <para>
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63 | Download size: &firefox-size;
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64 | </para>
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65 | </listitem>
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66 | <listitem>
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67 | <para>
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68 | Estimated disk space required: &firefox-buildsize;
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69 | </para>
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70 | </listitem>
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71 | <listitem>
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72 | <para>
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73 | Estimated build time: &firefox-time;
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74 | </para>
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75 | </listitem>
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76 | </itemizedlist>
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77 |
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78 | <!--<bridgehead renderas="sect3">Additional Downloads</bridgehead>
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79 | <itemizedlist spacing="compact">
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80 | <listitem>
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81 | <para>
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82 | Required patch:
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83 | <ulink url="&patch-root;/firefox-&firefox-version;-consolidated-1.patch"/>
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84 | </para>
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85 | </listitem>
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86 | <listitem>
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87 | <para>
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88 | Required patch for new <xref linkend="ffmpeg"/> API:
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89 | <ulink url="&patch-root;/firefox-&firefox-version;-ffmpeg_6-1.patch"/>
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90 | </para>
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91 | </listitem>
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92 | </itemizedlist>-->
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93 |
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94 | <note>
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95 | <para>
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96 | The directory name is firefox-&firefox-version;
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97 | </para>
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98 |
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99 | <para>
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100 | Extracting the tarball
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101 | will reset the permissions of the current directory to 0755 if you
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102 | have permission to do that. If you do this in a directory where
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103 | the sticky bit is set, such
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104 | as <filename class="directory">/tmp</filename> it will end with error
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105 | messages:
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106 | </para>
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107 |
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108 | <literallayout>tar: .: Cannot utime: Operation not permitted
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109 | tar: .: Cannot change mode to rwxr-xr-t: Operation not permitted
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110 | tar: Exiting with failure status due to previous errors
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111 | </literallayout>
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112 |
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113 | <para>
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114 | This does finish with non-zero status, but it does
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115 | <emphasis>NOT</emphasis> mean there is a real problem.
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116 | Do not untar as the <systemitem class="username">root</systemitem> user
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117 | in a directory where the sticky bit is set - that will unset it.
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118 | </para>
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119 |
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120 | <para>
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121 | As with other large packages which use C++ (or rust), the SBU times
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122 | to build this vary more widely than you might expect. The build times
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123 | will increase significantly if your machine has to swap.
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124 | </para>
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125 |
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126 | <para>
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127 | Although upstream prefer to use <application>PulseAudio</application>,
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128 | for the moment <application>Alsa</application> can still be used. Both
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129 | may need runtime configuration to get sound working.
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130 | </para>
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131 | </note>
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132 |
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133 | <bridgehead renderas="sect3">Firefox Dependencies</bridgehead>
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134 |
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135 | <bridgehead renderas="sect4">Required</bridgehead>
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136 | <para role="required">
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137 | <xref linkend="autoconf213"/>,
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138 | <xref linkend="cbindgen"/>,
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139 | <xref linkend="dbus-glib"/>,
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140 | <xref linkend="gtk3"/>,
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141 | <xref linkend="libnotify"/>,
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142 | <xref linkend="llvm"/> (with clang, used for bindgen even if using gcc),
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143 | <xref linkend="nodejs"/>,
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144 | <xref linkend="pulseaudio"/>
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145 | (or
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146 | <xref linkend="alsa-lib"/> if you edit the mozconfig;
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147 | now deprecated by mozilla), in either case please read the
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148 | Configuration Information,
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149 | <xref linkend="python3"/> (rebuilt after installing <xref linkend="sqlite"/>),
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150 | <xref linkend="startup-notification"/>,
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151 | <xref linkend="unzip"/>,
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152 | <xref linkend="yasm"/>, and
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153 | <xref linkend="zip"/>
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154 | </para>
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155 |
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156 | <bridgehead renderas="sect4">Recommended</bridgehead>
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157 | <para role="recommended">
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158 | <xref linkend="icu"/>,
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159 | <xref linkend="libevent"/>,
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160 | <xref linkend="libvpx"/>,
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161 | <xref linkend="libwebp"/>,
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162 | <xref linkend="nasm"/>,
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163 | <xref linkend="nss"/>
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164 | </para>
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165 |
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166 | <note>
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167 | <para>
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168 | If you don't install recommended dependencies, then internal copies of
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169 | those packages will be used. They might be tested to work, but they can
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170 | be out of date or contain security holes.
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171 | </para>
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172 | </note>
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173 |
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174 | <bridgehead renderas="sect4">Optional</bridgehead>
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175 | <para role="optional">
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176 | <xref linkend="curl"/>,
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177 | <xref linkend="doxygen"/>,
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178 | <xref role="runtime" linkend="ffmpeg"/> (runtime, to play mov, mp3 or mp4 files),
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179 | <xref linkend="liboauth"/>,
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180 | <xref role="runtime" linkend="pciutils"/> (runtime),
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181 | <xref linkend="valgrind"/>,
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182 | <xref linkend="wget"/>,
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183 | <xref linkend="wireless_tools"/>,
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184 | <ulink url="https://github.com/libproxy/libproxy">libproxy</ulink>
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185 | </para>
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186 |
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187 | <para condition="html" role="usernotes">
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188 | Editor Notes: <ulink url="&blfs-wiki;/firefox"/>
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189 | </para>
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190 | </sect2>
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191 |
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192 | <sect2 role="installation">
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193 | <title>Installation of Firefox</title>
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194 |
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195 | <para>
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196 | The configuration of <application>Firefox</application> is accomplished
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197 | by creating a <filename>mozconfig</filename> file containing the desired
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198 | configuration options. A default <filename>mozconfig</filename> is
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199 | created below. To see the entire list of available configuration options
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200 | (and an abbreviated description of some of them), issue <command>./mach
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201 | configure -- --help | less</command>. You may also
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202 | wish to review the entire file and uncomment any other desired options.
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203 | Create the file by issuing the following command:
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204 | </para>
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205 |
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206 | <screen><userinput>cat > mozconfig << "EOF"
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207 | <literal># If you have a multicore machine, all cores will be used by default.
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208 |
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209 | # If you have installed (or will install) wireless-tools, and you wish
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210 | # to use geolocation web services, comment out this line
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211 | ac_add_options --disable-necko-wifi
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212 |
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213 | # API Keys for geolocation APIs - necko-wifi (above) is required for MLS
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214 | # Uncomment the following line if you wish to use Mozilla Location Service
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215 | #ac_add_options --with-mozilla-api-keyfile=$PWD/mozilla-key
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216 |
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217 | # Uncomment the following line if you wish to use Google's geolocation API
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218 | # (needed for use with saved maps with Google Maps)
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219 | #ac_add_options --with-google-location-service-api-keyfile=$PWD/google-key
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220 |
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221 | # startup-notification is required since firefox-78
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222 |
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223 | # Uncomment the following option if you have not installed PulseAudio and
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224 | # want to use alsa instead
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225 | #ac_add_options --enable-audio-backends=alsa
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226 |
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227 | # Comment out following options if you have not installed
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228 | # recommended dependencies:
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229 | ac_add_options --with-system-icu
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230 | ac_add_options --with-system-libevent
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231 | ac_add_options --with-system-libvpx
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232 | ac_add_options --with-system-nspr
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233 | ac_add_options --with-system-nss
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234 | ac_add_options --with-system-webp
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235 |
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236 | # Unlike with thunderbird, although using the gold linker can
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237 | # save four megabytes in the installed file it does not make
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238 | # the build faster.
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239 |
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240 | # libdav1d (av1 decoder) requires nasm. Uncomment this if nasm
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241 | # has not been installed. Do not uncomment this if you have
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242 | # ffmpeg installed.
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243 | #ac_add_options --disable-av1
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244 |
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245 | # You cannot distribute the binary if you do this
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246 | ac_add_options --enable-official-branding
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247 |
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248 | # Stripping is now enabled by default.
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249 | # Uncomment these lines if you need to run a debugger:
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250 | #ac_add_options --disable-strip
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251 | #ac_add_options --disable-install-strip
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252 |
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253 | # Disabling debug symbols makes the build much smaller and a little
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254 | # faster. Comment this if you need to run a debugger. Note: This is
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255 | # required for compilation on i686.
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256 | ac_add_options --disable-debug-symbols
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257 |
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258 | # The elf-hack is reported to cause failed installs (after successful builds)
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259 | # on some machines. It is supposed to improve startup time and it shrinks
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260 | # libxul.so by a few MB - comment this if you know your machine is not affected.
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261 | ac_add_options --disable-elf-hack
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262 |
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263 | # The BLFS editors recommend not changing anything below this line:
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264 | ac_add_options --prefix=/usr
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265 | ac_add_options --enable-application=browser
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266 | ac_add_options --disable-crashreporter
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267 | ac_add_options --disable-updater
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268 | # enabling the tests will use a lot more space and significantly
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269 | # increase the build time, for no obvious benefit.
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270 | ac_add_options --disable-tests
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271 |
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272 | # The default level of optimization again produces a working build with gcc.
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273 | ac_add_options --enable-optimize
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274 |
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275 | ac_add_options --enable-system-ffi
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276 | ac_add_options --enable-system-pixman
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277 |
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278 | ac_add_options --with-system-jpeg
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279 | ac_add_options --with-system-png
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280 | ac_add_options --with-system-zlib
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281 |
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282 | # Sandboxing works well on x86_64 but might cause issues on other
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283 | # platforms. If not on x86_64, e.g. i686, it is recommended to
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284 | # uncomment the following switch.
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285 | #ac_add_options --disable-sandbox
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286 |
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287 | # Using sandboxed wasm libraries has been moved to all builds instead
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288 | # of only mozilla automation builds. It requires extra llvm packages
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289 | # and was reported to seriously slow the build. Disable it.
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290 | ac_add_options --without-wasm-sandboxed-libraries
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291 |
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292 | # The following option unsets Telemetry Reporting. With the Addons Fiasco,
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293 | # Mozilla was found to be collecting user's data, including saved passwords and
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294 | # web form data, without users consent. Mozilla was also found shipping updates
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295 | # to systems without the user's knowledge or permission.
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296 | # As a result of this, use the following command to permanently disable
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297 | # telemetry reporting in Firefox.
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298 | unset MOZ_TELEMETRY_REPORTING
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299 |
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300 | mk_add_options MOZ_OBJDIR=@TOPSRCDIR@/firefox-build-dir</literal>
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301 | EOF</userinput></screen>
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302 |
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303 | <para>
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304 | Compile <application>Firefox</application> by issuing the following
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305 | commands:
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306 | </para>
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307 | <!-- Not needed with clang. Upstream bug at
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308 | https://bugzilla.mozilla.org/show_bug.cgi?id=1729459
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309 |
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310 | <para>
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311 | If building on a 32 bit machine, the following sed works around
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312 | an issue with an incompatible <quote>double</quote> type in one
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313 | header file:
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314 | </para>
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315 |
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316 | <screen><userinput>case "$(uname -m)" in
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317 | i?86) sed -e '/typedef[ ]*double/s/double/long double/' \
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318 | -i modules/fdlibm/src/math_private.h ;;
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319 | esac</userinput></screen>
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320 | -->
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321 | <para>
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322 | If the geolocation APIs are needed:
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323 | </para>
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324 |
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325 | <note>
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326 | <para>
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327 | <!-- Taken from Arch Linux - an immensely helpful link - Thanks -->
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328 | The Google and Mozilla API Keys below are specific to LFS. If using
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329 | these instructions for another distro, or if you intend to distribute
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330 | binary copies of the software using these instructions, please obtain
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331 | your own keys following the instructions located at
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332 | <ulink url="https://www.chromium.org/developers/how-tos/api-keys"/> and
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333 | <ulink url="https://location.services.mozilla.com/api"/> respectively.
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334 | <!-- BLFS Devs, register an account at Google with your
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335 | @linuxfromscratch.org email address, and I'll make you an administrator
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336 | for the 'Google APIs for LFS' project (where the API and OAuth keys
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337 | were created for use in the book).-->
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338 | </para>
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339 | </note>
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340 |
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341 | <screen><userinput>echo "AIzaSyDxKL42zsPjbke5O8_rPVpVrLrJ8aeE9rQ" > google-key
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342 | echo "613364a7-9418-4c86-bcee-57e32fd70c23" > mozilla-key</userinput></screen>
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343 |
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344 | <note>
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345 |
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346 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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347 | href="../../xincludes/mozshm.xml"/>
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348 |
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349 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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350 | href="../../xincludes/mozmach.xml"/>
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351 |
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352 | </note>
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353 |
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354 | <!--<para>
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355 | Fix building Firefox with Clang 16 or C++ headers from GCC 13.
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356 | And, work around a build failure with Rustc-1.70.0:
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357 | </para>
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358 |
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359 | <screen><userinput remap="pre">patch -Np1 -i ../firefox-&firefox-version;-consolidated-1.patch</userinput></screen>
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360 |
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361 | <para>
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362 | Apply the following patch so that firefox is able to play H.264 videos:
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363 | </para>
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364 |
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365 | <screen><userinput remap="pre">patch -Np1 -i ../firefox-&firefox-version;-ffmpeg_6-1.patch</userinput></screen>-->
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366 |
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367 | <para>
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368 | Now invoke the Python <command>mach</command> script to compile the package.
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369 | </para>
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370 |
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371 | <screen><userinput>export MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE=none &&
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372 | export MOZBUILD_STATE_PATH=${PWD}/mozbuild &&
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373 | ./mach configure &&
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374 | ./mach build</userinput></screen>
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375 |
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376 | <para>
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377 | The <filename>mozconfig</filename> above disables the tests because
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378 | they use a lot more time and disk space for no obvious benefit. If
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379 | you have nevertheless enabled them, you can run the tests by executing
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380 | <command>./mach gtest</command>. This will require a network connection,
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381 | and to be run from within an Xorg session - there is a popup dialog
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382 | when it fails to connect to ALSA (that does not create a failed test).
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383 | One or two tests will fail. To see the details of the failure(s) you
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384 | will need to log the output from that command so that you can review it.
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385 | </para>
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386 |
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387 | <para>
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388 | Now, as the <systemitem class="username">root</systemitem> user:
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389 | </para>
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390 |
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391 | <screen role="root"><userinput>MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE=none ./mach install</userinput></screen>
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392 |
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393 | <para>
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394 | Empty the environment variables which were set above:
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395 | </para>
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396 |
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397 | <screen><userinput>unset MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE MOZBUILD_STATE_PATH</userinput></screen>
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398 |
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399 | </sect2>
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400 |
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401 | <sect2 role="commands">
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402 | <title>Command Explanations</title>
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403 |
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404 | <!--<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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405 | href="../../xincludes/SIOCGSTAMP.xml"/>-->
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406 |
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407 | <para>
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408 | <command>export MOZBUILD_STATE_PATH=${PWD}/mozbuild</command>: The build
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409 | is now supposed to tell you that it intends to create <filename
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410 | class="directory">~/.mozbuild</filename>, and offer you an option to
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411 | press <ENTER> to accept this, or Ctrl-C to cancel and restart the
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412 | build after specifying the directory. In practice, the message may not
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413 | appear until after <ENTER> is keyed, i.e. the build stalls.
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414 | </para>
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415 |
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416 | <para>
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417 | That directory is used for a (probably random) telemetry identifier.
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418 | Creating this in the build directory, and deleting that after the
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419 | installation, prevents it being used. If you wish to participate in
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420 | telemetry, export MOZBUILD_STATE_PATH to point to its default directory
|
---|
421 | and remove the entry from the <filename>mozconfig</filename>.
|
---|
422 | </para>
|
---|
423 |
|
---|
424 | <para>
|
---|
425 | <command>MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE=none</command>: Use the
|
---|
426 | system python to create a virtual environment for <command>mach</command>
|
---|
427 | without downloading any python wheels nor using the system python modules.
|
---|
428 | This prevents version mismatches between system modules and bundled ones.
|
---|
429 | </para>
|
---|
430 |
|
---|
431 | <para>
|
---|
432 | <command>./mach configure</command>: This validates the supplied
|
---|
433 | dependencies and the <filename>mozconfig</filename>.
|
---|
434 | </para>
|
---|
435 |
|
---|
436 | <para>
|
---|
437 | <option>./mach build --verbose</option>: Use this alternative if you
|
---|
438 | need details of which files are being compiled, together with any C or
|
---|
439 | C++ flags being used. But do not add '--verbose' to the install command
|
---|
440 | since it is not accepted there.
|
---|
441 | </para>
|
---|
442 |
|
---|
443 | <para>
|
---|
444 | <option>./mach build -jN</option>: The build should, by default, use
|
---|
445 | all the online CPU cores. If using all the cores causes the build to swap
|
---|
446 | because you have insufficient memory, using fewer cores can be faster.
|
---|
447 | </para>
|
---|
448 |
|
---|
449 | <para>
|
---|
450 | <option><envar>CC=gcc CXX=g++</envar></option>: BLFS used to
|
---|
451 | prefer to use gcc and g++ instead of upstream's defaults of the
|
---|
452 | <application>clang</application> programs. With the release of
|
---|
453 | gcc-12 the build takes longer with gcc and g++, primarily because
|
---|
454 | of extra warnings, and is bigger. Set these environment variables
|
---|
455 | <emphasis>before you run the configure script</emphasis>
|
---|
456 | if you wish to continue to use gcc, g++. Building
|
---|
457 | with GCC on i?86 is currently broken.
|
---|
458 | </para>
|
---|
459 |
|
---|
460 | </sect2>
|
---|
461 |
|
---|
462 | <sect2 role="configuration">
|
---|
463 | <title>Configuring Firefox</title>
|
---|
464 |
|
---|
465 | <para>
|
---|
466 | If you use a desktop environment like <application>Gnome</application> or
|
---|
467 | <application>KDE</application> you may want to create a
|
---|
468 | <filename>firefox.desktop</filename> file so that
|
---|
469 | <application>Firefox</application> appears in the panel's menus.
|
---|
470 | As the &root; user:
|
---|
471 | </para>
|
---|
472 |
|
---|
473 | <screen role="root"><userinput>mkdir -pv /usr/share/applications &&
|
---|
474 | mkdir -pv /usr/share/pixmaps &&
|
---|
475 |
|
---|
476 | MIMETYPE="text/xml;text/mml;text/html;" &&
|
---|
477 | MIMETYPE+="application/xhtml+xml;application/vnd.mozilla.xul+xml;" &&
|
---|
478 | MIMETYPE+="x-scheme-handler/http;x-scheme-handler/https" &&
|
---|
479 |
|
---|
480 | cat > /usr/share/applications/firefox.desktop << EOF &&
|
---|
481 | <literal>[Desktop Entry]
|
---|
482 | Encoding=UTF-8
|
---|
483 | Name=Firefox Web Browser
|
---|
484 | Comment=Browse the World Wide Web
|
---|
485 | GenericName=Web Browser
|
---|
486 | Exec=firefox %u
|
---|
487 | Terminal=false
|
---|
488 | Type=Application
|
---|
489 | Icon=firefox
|
---|
490 | Categories=GNOME;GTK;Network;WebBrowser;
|
---|
491 | MimeType=$MIMETYPE
|
---|
492 | StartupNotify=true</literal>
|
---|
493 | EOF
|
---|
494 |
|
---|
495 | unset MIMETYPE &&
|
---|
496 |
|
---|
497 | ln -sfv /usr/lib/firefox/browser/chrome/icons/default/default128.png \
|
---|
498 | /usr/share/pixmaps/firefox.png</userinput></screen>
|
---|
499 |
|
---|
500 | <sect3><title>Configuration Information</title>
|
---|
501 |
|
---|
502 | <para>
|
---|
503 | The application settings for firefox are accessible by keying
|
---|
504 | <command>about:config</command> in the address bar.
|
---|
505 | </para>
|
---|
506 |
|
---|
507 | <para>
|
---|
508 | Occasionally, getting working sound in
|
---|
509 | <application>firefox</application> can be a problem. Although upstream
|
---|
510 | prefers pulseaudio,
|
---|
511 | on balance using <application>Alsa</application> may be easier.
|
---|
512 | </para>
|
---|
513 |
|
---|
514 | <para>
|
---|
515 | If you enabled <application>Alsa</application> for sound, you may need
|
---|
516 | to alter one variable to get working sound. If you run
|
---|
517 | <command>firefox</command> from a terminal and try to play something
|
---|
518 | with sound you might encounter error messages like:
|
---|
519 | </para>
|
---|
520 |
|
---|
521 | <para>
|
---|
522 | <literal>Sandbox: seccomp sandbox violation: pid 3941, tid 4030,
|
---|
523 | syscall 16, args 48 2147767296 139909894784796 0 0 0.</literal>
|
---|
524 | </para>
|
---|
525 |
|
---|
526 | <para>
|
---|
527 | That was on x86_64, on i686 the syscall number is 54. To allow this
|
---|
528 | syscall, in <command>about:config</command> change
|
---|
529 | <command>security.sandbox.content.syscall_whitelist</command> to 16
|
---|
530 | (or 54 if using i686).
|
---|
531 | </para>
|
---|
532 |
|
---|
533 | <para>
|
---|
534 | If you use <command>pulseaudio</command> in a Desktop Environment, it
|
---|
535 | might already be started by that DE. But if it is not, although
|
---|
536 | firefox-57 managed to start it, firefox-58 did not. If you run
|
---|
537 | <command>firefox</command> from a terminal and this problem is present,
|
---|
538 | trying to play sound will
|
---|
539 | encounter error messages warning <literal>Can't get cubeb
|
---|
540 | context!</literal>
|
---|
541 | </para>
|
---|
542 |
|
---|
543 | <para>
|
---|
544 | The fix for this is to close firefox, start pulseaudio to check it
|
---|
545 | does start (if not, read the information on Configuring in <xref
|
---|
546 | linkend="pulseaudio"/>) and restart firefox to check it is working.
|
---|
547 | If it now works, add the following to your <filename>~/.xinitrc</filename>:
|
---|
548 | <phrase revision="sysv">
|
---|
549 | <literal>pulseaudio --verbose --log-target=syslog&</literal></phrase>
|
---|
550 | <phrase revision="systemd">
|
---|
551 | <literal>pulseaudio --verbose --log-target=journald&</literal></phrase>
|
---|
552 | (unfortunately, on some systems this does not work).
|
---|
553 | </para>
|
---|
554 |
|
---|
555 | <para>
|
---|
556 | You may wish to use multiple profiles within firefox. To do that, invoke
|
---|
557 | firefox as <command>firefox --ProfileManager</command>. You can also
|
---|
558 | check which profile is currently in use from
|
---|
559 | <command>about:profiles</command>.
|
---|
560 | </para>
|
---|
561 |
|
---|
562 | <para>
|
---|
563 | Although WebRender (using the GPU for compositing) is not used by
|
---|
564 | default, it now appears to work well on supported hardware (ATI, Nvidia
|
---|
565 | and Intel GPUs with Mesa-18 or later). For an explanation, please see
|
---|
566 | <ulink
|
---|
567 | url="https://hacks.mozilla.org/2017/10/the-whole-web-at-maximum-fps-how-webrender-gets-rid-of-jank/">hacks.mozilla.org</ulink>.
|
---|
568 | The only downside seems to be that on a machine with limited RAM it might
|
---|
569 | use more RAM.
|
---|
570 | </para>
|
---|
571 |
|
---|
572 | <para>
|
---|
573 | To check if WebRender is being used, look in about:support. In the Graphics
|
---|
574 | section, Compositing will either show 'Basic' (i.e. not in use) or
|
---|
575 | 'WebRender'. To enable it, go to about:config and change gfx.webrender.all
|
---|
576 | to True. You will need to restart firefox.
|
---|
577 | </para>
|
---|
578 |
|
---|
579 | <para>
|
---|
580 | It may be useful to mention the processes from firefox which can appear in
|
---|
581 | <command>top</command> - as well as firefox itself, there may be multiple
|
---|
582 | Web Content processes, and now an RDD Process (Remote Data Decoder) which
|
---|
583 | appears when playing web videos encoded with av1 (libdav1d). If WebRender
|
---|
584 | has been enabled, a GPU Process will also appear when firefox has to
|
---|
585 | repaint (e.g. scrolling, opening a new tab, or playing a video).
|
---|
586 | </para>
|
---|
587 |
|
---|
588 | </sect3>
|
---|
589 | </sect2>
|
---|
590 |
|
---|
591 | <sect2 role="content">
|
---|
592 | <title>Contents</title>
|
---|
593 |
|
---|
594 | <segmentedlist>
|
---|
595 | <segtitle>Installed Programs</segtitle>
|
---|
596 | <segtitle>Installed Libraries</segtitle>
|
---|
597 | <segtitle>Installed Directory</segtitle>
|
---|
598 |
|
---|
599 | <seglistitem>
|
---|
600 | <seg>
|
---|
601 | firefox
|
---|
602 | </seg>
|
---|
603 | <seg>
|
---|
604 | Numerous libraries, browser components, plugins, extensions, and
|
---|
605 | helper modules installed in /usr/lib/firefox
|
---|
606 | </seg>
|
---|
607 | <seg>
|
---|
608 | /usr/lib/firefox
|
---|
609 | </seg>
|
---|
610 | </seglistitem>
|
---|
611 | </segmentedlist>
|
---|
612 |
|
---|
613 | <variablelist>
|
---|
614 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
---|
615 | <?dbfo list-presentation="list"?>
|
---|
616 | <?dbhtml list-presentation="table"?>
|
---|
617 |
|
---|
618 | <varlistentry id="firefox-prog">
|
---|
619 | <term><command>firefox</command></term>
|
---|
620 | <listitem>
|
---|
621 | <para>
|
---|
622 | is a <application>GTK+-3</application> internet browser that uses
|
---|
623 | the Mozilla Gecko rendering engine
|
---|
624 | </para>
|
---|
625 | <indexterm zone="firefox firefox-prog">
|
---|
626 | <primary sortas="b-firefox">firefox</primary>
|
---|
627 | </indexterm>
|
---|
628 | </listitem>
|
---|
629 | </varlistentry>
|
---|
630 |
|
---|
631 | </variablelist>
|
---|
632 |
|
---|
633 | </sect2>
|
---|
634 |
|
---|
635 | </sect1>
|
---|