source: xsoft/graphweb/firefox.xml@ 8f30526

lazarus trunk
Last change on this file since 8f30526 was 8f30526, checked in by Ken Moffat <zarniwhoop@…>, 2 months ago

Update to firefox-115.9.1.

  • Property mode set to 100644
File size: 25.1 KB
Line 
1<?xml version="1.0" encoding="UTF-8"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6
7 <!ENTITY firefox-download-http "&mozilla-http;/firefox/releases/&firefox-version;esr/source/firefox-&firefox-version;esr.source.tar.xz">
8 <!ENTITY firefox-download-ftp " ">
9 <!ENTITY firefox-md5sum "ecd4cba403e3c60e92999ef4d0ee91c0">
10 <!ENTITY firefox-size "485 MB">
11
12 <!-- NB with stylo, much of the build uses rust, and therefore cargo files.
13 But the extra cached cargo files, if any, seem to be minimal -->
14 <!ENTITY firefox-buildsize "6.1 GB (199 MB installed) without tests">
15 <!-- editors: with ff63 and rust-1.29, ./mach build -j4 is probably the
16 most practical way to get a timing on a machine with more cores, if taking
17 cores offline is not practical. If in doubt, round up -->
18 <!ENTITY firefox-time "12 SBU using -j8, without tests">
19]>
20
21<sect1 id="firefox" xreflabel="Firefox-&firefox-version;">
22 <?dbhtml filename="firefox.html" ?>
23
24
25<!-- indicate this is the ESR variant,
26 The point is that the stable release differs slightly.
27 <title>Firefox-&firefox-version;</title>-->
28 <title>Firefox-&firefox-version;esr</title>
29
30 <indexterm zone="firefox">
31 <primary sortas="a-Firefox">Firefox</primary>
32 </indexterm>
33
34 <sect2 role="package">
35 <title>Introduction to Firefox</title>
36
37 <para>
38 <application>Firefox</application> is a stand-alone browser based on the
39 <application>Mozilla</application> codebase.
40 </para>
41
42 &lfs121_checked;
43
44 <bridgehead renderas="sect3">Package Information</bridgehead>
45 <itemizedlist spacing="compact">
46 <listitem>
47 <para>
48 Download (HTTP): <ulink url="&firefox-download-http;"/>
49 </para>
50 </listitem>
51 <listitem>
52 <para>
53 Download (FTP): <ulink url="&firefox-download-ftp;"/>
54 </para>
55 </listitem>
56 <listitem>
57 <para>
58 Download MD5 sum: &firefox-md5sum;
59 </para>
60 </listitem>
61 <listitem>
62 <para>
63 Download size: &firefox-size;
64 </para>
65 </listitem>
66 <listitem>
67 <para>
68 Estimated disk space required: &firefox-buildsize;
69 </para>
70 </listitem>
71 <listitem>
72 <para>
73 Estimated build time: &firefox-time;
74 </para>
75 </listitem>
76 </itemizedlist>
77
78<!--<bridgehead renderas="sect3">Additional Downloads</bridgehead>
79 <itemizedlist spacing="compact">
80 <listitem>
81 <para>
82 Required patch:
83 <ulink url="&patch-root;/firefox-&firefox-version;-consolidated-1.patch"/>
84 </para>
85 </listitem>
86 <listitem>
87 <para>
88 Required patch for new <xref linkend="ffmpeg"/> API:
89 <ulink url="&patch-root;/firefox-&firefox-version;-ffmpeg_6-1.patch"/>
90 </para>
91 </listitem>
92 </itemizedlist>-->
93
94 <note>
95 <para>
96 The directory name is firefox-&firefox-version;
97 </para>
98
99 <para>
100 Extracting the tarball
101 will reset the permissions of the current directory to 0755 if you
102 have permission to do that. If you do this in a directory where
103 the sticky bit is set, such
104 as <filename class="directory">/tmp</filename> it will end with error
105 messages:
106 </para>
107
108<literallayout>tar: .: Cannot utime: Operation not permitted
109tar: .: Cannot change mode to rwxr-xr-t: Operation not permitted
110tar: Exiting with failure status due to previous errors
111</literallayout>
112
113 <para>
114 This does finish with non-zero status, but it does
115 <emphasis>NOT</emphasis> mean there is a real problem.
116 Do not untar as the <systemitem class="username">root</systemitem> user
117 in a directory where the sticky bit is set - that will unset it.
118 </para>
119
120 <para>
121 As with other large packages which use C++ (or rust), the SBU times
122 to build this vary more widely than you might expect. The build times
123 will increase significantly if your machine has to swap.
124 </para>
125
126 <para>
127 Although upstream prefer to use <application>PulseAudio</application>,
128 for the moment <application>Alsa</application> can still be used. Both
129 may need runtime configuration to get sound working.
130 </para>
131 </note>
132
133 <bridgehead renderas="sect3">Firefox Dependencies</bridgehead>
134
135 <bridgehead renderas="sect4">Required</bridgehead>
136 <para role="required">
137 <xref linkend="cbindgen"/>,
138 <xref linkend="dbus-glib"/>,
139 <xref linkend="gtk3"/>,
140 <xref linkend="libnotify"/>,
141 <xref linkend="llvm"/> (with clang, used for bindgen even if using gcc),
142 <xref linkend="nodejs"/>,
143 <xref linkend="pulseaudio"/>
144 (or
145 <xref linkend="alsa-lib"/> if you edit the mozconfig;
146 now deprecated by mozilla), in either case please read the
147 Configuration Information,
148 <xref linkend="python311"/> (built after installing <xref linkend="sqlite"/>),
149 <!--<xref linkend="six"/>,-->
150 <xref linkend="startup-notification"/>, and
151 <xref linkend="unzip"/>
152 </para>
153
154 <bridgehead renderas="sect4">Recommended</bridgehead>
155 <para role="recommended">
156 <xref linkend="icu"/>,
157 <xref linkend="libevent"/>,
158 <xref linkend="libvpx"/>,
159 <xref linkend="libwebp"/>,
160 <xref linkend="nasm"/>, and
161 <xref linkend="nss"/>
162 </para>
163
164 <note>
165 <para>
166 If you don't install recommended dependencies, then internal copies of
167 those packages will be used. They might be tested to work, but they can
168 be out of date or contain security holes.
169 </para>
170 </note>
171
172 <bridgehead renderas="sect4">Optional</bridgehead>
173 <para role="optional">
174 <xref linkend="curl"/>,
175 <xref linkend="doxygen"/>,
176 <xref role="runtime" linkend="ffmpeg"/> (runtime, to play mov, mp3 or mp4 files),
177 <xref linkend="liboauth"/>,
178 <xref role="runtime" linkend="pciutils"/> (runtime),
179 <xref linkend="valgrind"/>,
180 <xref linkend="wget"/>,
181 <xref linkend="wireless_tools"/>,
182 <xref linkend="yasm"/>,
183 <ulink url="https://github.com/libproxy/libproxy">libproxy</ulink>
184 </para>
185
186 <para condition="html" role="usernotes">
187 Editor Notes: <ulink url="&blfs-wiki;/firefox"/>
188 </para>
189 </sect2>
190
191 <sect2 role="installation">
192 <title>Installation of Firefox</title>
193
194 <para>
195 The configuration of <application>Firefox</application> is accomplished
196 by creating a <filename>mozconfig</filename> file containing the desired
197 configuration options. A default <filename>mozconfig</filename> is
198 created below. To see the entire list of available configuration options
199 (and an abbreviated description of some of them), issue <command>./mach
200 configure -- --help | less</command>. You may also
201 wish to review the entire file and uncomment any other desired options.
202 Create the file by issuing the following command:
203 </para>
204
205<screen><userinput>cat &gt; mozconfig &lt;&lt; "EOF"
206<literal># If you have a multicore machine, all cores will be used by default.
207
208# If you have installed (or will install) wireless-tools, and you wish
209# to use geolocation web services, comment out this line
210ac_add_options --disable-necko-wifi
211
212# API Keys for geolocation APIs - necko-wifi (above) is required for MLS
213# Uncomment the following line if you wish to use Mozilla Location Service
214#ac_add_options --with-mozilla-api-keyfile=$PWD/mozilla-key
215
216# Uncomment the following line if you wish to use Google's geolocation API
217# (needed for use with saved maps with Google Maps)
218#ac_add_options --with-google-location-service-api-keyfile=$PWD/google-key
219
220# startup-notification is required since firefox-78
221
222# Uncomment the following option if you have not installed PulseAudio and
223# want to use alsa instead
224#ac_add_options --enable-audio-backends=alsa
225
226# Comment out following options if you have not installed
227# recommended dependencies:
228ac_add_options --with-system-icu
229ac_add_options --with-system-libevent
230ac_add_options --with-system-libvpx
231ac_add_options --with-system-nspr
232ac_add_options --with-system-nss
233ac_add_options --with-system-webp
234
235# Unlike with thunderbird, although using the gold linker can
236# save four megabytes in the installed file it does not make
237# the build faster.
238
239# The libdav1d library (av1 decoder) requires nasm. Uncomment this
240# if nasm has not been installed. Do not uncomment this if you have
241# ffmpeg installed.
242#ac_add_options --disable-av1
243
244# You cannot distribute the binary if you do this.
245ac_add_options --enable-official-branding
246
247# Stripping is now enabled by default.
248# Uncomment these lines if you need to run a debugger:
249#ac_add_options --disable-strip
250#ac_add_options --disable-install-strip
251
252# Disabling debug symbols makes the build much smaller and a little
253# faster. Comment this if you need to run a debugger. Note: This is
254# required for compilation on i686.
255ac_add_options --disable-debug-symbols
256<!-- With Firefox ESR 128 we'd replace the following part with
257"- -enable-elf-hack=relr", or remove it if relr becomes the default. -->
258# The elf-hack is reported to cause failed installs (after successful builds)
259# on some machines. It is supposed to improve startup time and it shrinks
260# libxul.so by a few MB. With recent Binutils releases the linker already
261# supports a much safer and generic way for this.
262ac_add_options --disable-elf-hack
263export LDFLAGS="$LDFLAGS -Wl,-z,pack-relative-relocs"
264
265# The BLFS editors recommend not changing anything below this line:
266ac_add_options --prefix=/usr
267ac_add_options --enable-application=browser
268ac_add_options --disable-crashreporter
269ac_add_options --disable-updater
270
271# Enabling the tests will use a lot more space and significantly
272# increase the build time, for no obvious benefit.
273ac_add_options --disable-tests
274
275# This enables SIMD optimization in the shipped encoding_rs crate.
276ac_add_options --enable-rust-simd
277
278ac_add_options --enable-system-ffi
279ac_add_options --enable-system-pixman
280
281ac_add_options --with-system-jpeg
282ac_add_options --with-system-png
283ac_add_options --with-system-zlib
284
285# Sandboxing works well on x86_64 but might cause issues on other
286# platforms. If not on x86_64, e.g. i686, it is recommended to
287# uncomment the following switch.
288#ac_add_options --disable-sandbox
289
290# Using sandboxed wasm libraries has been moved to all builds instead
291# of only mozilla automation builds. It requires extra llvm packages
292# and was reported to seriously slow the build. Disable it.
293ac_add_options --without-wasm-sandboxed-libraries
294
295# The following option unsets Telemetry Reporting. With the Addons Fiasco,
296# Mozilla was found to be collecting user's data, including saved passwords and
297# web form data, without users consent. Mozilla was also found shipping updates
298# to systems without the user's knowledge or permission.
299# As a result of this, use the following command to permanently disable
300# telemetry reporting in Firefox.
301unset MOZ_TELEMETRY_REPORTING
302
303mk_add_options MOZ_OBJDIR=@TOPSRCDIR@/firefox-build-dir</literal>
304EOF</userinput></screen>
305
306 <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=1859752
307 https://hg.mozilla.org/try/rev/d5f3b0c4f08a -->
308 <para>
309 If building with system ICU, adapt the line break mapping for ICU
310 74 or later. This construct adds five entries to a c++ array.
311 </para>
312
313<screen><userinput>for i in {43..47}; do
314 sed -i '/ZWJ/s/}/,CLASS_CHARACTER&amp;/' intl/lwbrk/LineBreaker.cpp
315done</userinput></screen>
316
317 <para>
318 Compile <application>Firefox</application> by issuing the following
319 commands:
320 </para>
321<!-- Not needed with clang. Upstream bug at
322 https://bugzilla.mozilla.org/show_bug.cgi?id=1729459
323
324 <para>
325 If building on a 32 bit machine, the following sed works around
326 an issue with an incompatible <quote>double</quote> type in one
327 header file:
328 </para>
329
330<screen><userinput>case "$(uname -m)" in
331 i?86) sed -e '/typedef[ ]*double/s/double/long double/' \
332 -i modules/fdlibm/src/math_private.h ;;
333esac</userinput></screen>
334-->
335 <para>
336 If the geolocation APIs are needed:
337 </para>
338
339 <note>
340 <para>
341 <!-- Taken from Arch Linux - an immensely helpful link - Thanks -->
342 The Google and Mozilla API Keys below are specific to LFS. If using
343 these instructions for another distro, or if you intend to distribute
344 binary copies of the software using these instructions, please obtain
345 your own keys following the instructions located at
346 <ulink url="https://www.chromium.org/developers/how-tos/api-keys"/> and
347 <ulink url="https://location.services.mozilla.com/api"/> respectively.
348 <!-- BLFS Devs, register an account at Google with your
349 @linuxfromscratch.org email address, and I'll make you an administrator
350 for the 'Google APIs for LFS' project (where the API and OAuth keys
351 were created for use in the book).-->
352 </para>
353 </note>
354
355<screen><userinput>echo "AIzaSyDxKL42zsPjbke5O8_rPVpVrLrJ8aeE9rQ" > google-key
356echo "613364a7-9418-4c86-bcee-57e32fd70c23" > mozilla-key</userinput></screen>
357
358 <note>
359 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
360 href="../../xincludes/mozshm.xml"/>
361 </note>
362
363<!--<para>
364 Fix building Firefox with Clang 16 or C++ headers from GCC 13.
365 And, work around a build failure with Rustc-1.70.0:
366 </para>
367
368<screen><userinput remap="pre">patch -Np1 -i ../firefox-&firefox-version;-consolidated-1.patch</userinput></screen>
369
370 <para>
371 Apply the following patch so that firefox is able to play H.264 videos:
372 </para>
373
374<screen><userinput remap="pre">patch -Np1 -i ../firefox-&firefox-version;-ffmpeg_6-1.patch</userinput></screen>-->
375
376 <!-- https://github.com/rust-lang/rust-bindgen/pull/2689 -->
377 <para>
378 Adapt the shipped <application>rust-bindgen</application> copy for
379 LLVM-18 and later, and tell <command>cargo</command> we've modified
380 the code of <application>rust-bindgen</application> so the checksum
381 verification of this crate should be skipped:
382 </para>
383
384 <screen><userinput>sed -e "/match cursor.kind()/a \
385 CXCursor_LinkageSpec => return Err(ParseError::Recurse)," \
386 -i third_party/rust/bindgen/ir/item.rs &amp;&amp;
387
388cat &gt;&gt; Cargo.toml &lt;&lt; EOF &amp;&amp;
389<literal>[patch.crates-io.bindgen_0_64_0]
390package = "bindgen"
391version = "0.64.0"
392path = "third_party/rust/bindgen"</literal>
393EOF
394
395sed -r '/name = "bindgen"/,+5 s/^source|^checksum/#&amp;/' \
396 -i Cargo.lock</userinput></screen>
397
398 <!-- https://hg.mozilla.org/mozilla-central/rev/ba6abbd36b49 -->
399 <para>
400 Adapt the WebRTC code to use 64-bit timestamp to fix a build
401 failure with Clang-18 and later:
402 </para>
403
404 <screen><userinput>sed 's/uint32_t timestamp/uint64_t timestamp/' \
405 -i dom/media/gmp-plugin-openh264/gmp-fake-openh264.cpp \
406 dom/media/gtest/TestGMPRemoveAndDelete.cpp \
407 dom/media/webrtc/libwebrtcglue/WebrtcGmpVideoCodec.cpp &amp;&amp;
408
409sed '/mInputImageMap/s/uint32_t/uint64_t/' \
410 -i dom/media/webrtc/libwebrtcglue/WebrtcGmpVideoCodec.h</userinput></screen>
411
412 <para>
413 Now invoke the Python <command>mach</command> script to compile the package.
414 </para>
415
416<screen><userinput>export MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE=none &amp;&amp;
417export MOZBUILD_STATE_PATH=${PWD}/mozbuild &amp;&amp;
418export PYTHON311=/opt/python3.11/bin/python3.11 &amp;&amp;
419$PYTHON311 ./mach build</userinput></screen>
420
421 <para>
422 The <filename>mozconfig</filename> above disables the tests because
423 they use a lot more time and disk space for no obvious benefit. If
424 you have nevertheless enabled them, you can run the tests by executing
425 <command>./mach gtest</command>. This will require a network connection,
426 and to be run from within an Xorg session - there is a popup dialog
427 when it fails to connect to ALSA (that does not create a failed test).
428 One or two tests will fail. To see the details of the failure(s) you
429 will need to log the output from that command so that you can review it.
430 </para>
431
432 <para>
433 Now, as the <systemitem class="username">root</systemitem> user:
434 </para>
435
436<screen role="root"><userinput>export MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE=none &amp;&amp;
437export PYTHON311=/opt/python3.11/bin/python3.11 &amp;&amp;
438$PYTHON311 ./mach install</userinput></screen>
439
440 <para>
441 Empty the environment variables which were set above:
442 </para>
443
444<screen><userinput>unset MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE
445unset MOZBUILD_STATE_PATH
446unset PYTHON311</userinput></screen>
447
448 </sect2>
449
450 <sect2 role="commands">
451 <title>Command Explanations</title>
452
453 <para>
454 <command>export MOZBUILD_STATE_PATH=${PWD}/mozbuild</command>: The build
455 tells you that it intends to create <filename
456 class="directory">~/.mozbuild</filename>, and offer you an option to
457 press &lt;ENTER&gt; to accept this, or Ctrl-C to cancel and restart the
458 build after specifying the directory. In practice, the message may not
459 appear until after &lt;ENTER&gt; is keyed, i.e. the build stalls.
460 </para>
461
462 <para>
463 That directory is used for a (probably random) telemetry identifier.
464 Creating this directory within the build directory and deleting it after the
465 installation prevents it being used.
466 </para>
467
468 <para>
469 <command>MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE=none</command>: Use the
470 system python to create a virtual environment for <command>mach</command>
471 without downloading any python wheels and without using the system python modules.
472 This prevents version mismatches between system modules and bundled ones.
473 </para>
474
475<!--
476 <para>
477 <command>./mach configure</command>: This validates the supplied
478 dependencies and the <filename>mozconfig</filename>.
479 </para>
480-->
481
482 <para>
483 <option>./mach build --verbose</option>: Use this alternative if you
484 need details of which files are being compiled, together with any C or
485 C++ flags being used. But do not add '--verbose' to the install command
486 since it is not accepted there.
487 </para>
488
489 <para>
490 <option>./mach build -jN</option>: The build should, by default, use
491 all the online CPU cores. If using all the cores causes the build to swap
492 because you have insufficient memory, using fewer cores can be faster.
493 </para>
494
495 <para>
496 <option><envar>CC=gcc CXX=g++</envar></option>: BLFS used to
497 prefer to use gcc and g++ instead of upstream's defaults of the
498 <application>clang</application> programs. With the release of
499 gcc-12 the build takes longer with gcc and g++, primarily because
500 of extra warnings, and is bigger. Set these environment variables
501 <emphasis>before you run the configure script</emphasis>
502 if you wish to continue to use gcc, g++. Building
503 with GCC on i?86 is currently broken.
504 </para>
505
506 </sect2>
507
508 <sect2 role="configuration">
509 <title>Configuring Firefox</title>
510
511 <para>
512 If you use a desktop environment like <application>Gnome</application> or
513 <application>KDE</application> you may want to create a
514 <filename>firefox.desktop</filename> file so that
515 <application>Firefox</application> appears in the panel's menus.
516 As the &root; user:
517 </para>
518
519<screen role="root"><userinput>mkdir -pv /usr/share/applications &amp;&amp;
520mkdir -pv /usr/share/pixmaps &amp;&amp;
521
522MIMETYPE="text/xml;text/mml;text/html;" &amp;&amp;
523MIMETYPE+="application/xhtml+xml;application/vnd.mozilla.xul+xml;" &amp;&amp;
524MIMETYPE+="x-scheme-handler/http;x-scheme-handler/https" &amp;&amp;
525
526cat &gt; /usr/share/applications/firefox.desktop &lt;&lt; EOF &amp;&amp;
527<literal>[Desktop Entry]
528Encoding=UTF-8
529Name=Firefox Web Browser
530Comment=Browse the World Wide Web
531GenericName=Web Browser
532Exec=firefox %u
533Terminal=false
534Type=Application
535Icon=firefox
536Categories=GNOME;GTK;Network;WebBrowser;
537MimeType=$MIMETYPE
538StartupNotify=true</literal>
539EOF
540
541unset MIMETYPE &amp;&amp;
542
543ln -sfv /usr/lib/firefox/browser/chrome/icons/default/default128.png \
544 /usr/share/pixmaps/firefox.png</userinput></screen>
545
546 <sect3><title>Configuration Information</title>
547
548 <para>
549 The application settings for firefox are accessible by keying
550 <command>about:config</command> in the address bar.
551 </para>
552
553 <para>
554 Occasionally, getting working sound in
555 <application>firefox</application> can be a problem. Although upstream
556 prefers pulseaudio,
557 on balance using <application>Alsa</application> may be easier.
558 </para>
559
560 <para>
561 If you enabled <application>Alsa</application> for sound, you may need
562 to alter one variable to get working sound. If you run
563 <command>firefox</command> from a terminal and try to play something
564 with sound you might encounter error messages like:
565 </para>
566
567 <para>
568 <literal>Sandbox: seccomp sandbox violation: pid 3941, tid 4030,
569 syscall 16, args 48 2147767296 139909894784796 0 0 0.</literal>
570 </para>
571
572 <para>
573 That was on x86_64, on i686 the syscall number is 54. To allow this
574 syscall, in <command>about:config</command> change
575 <command>security.sandbox.content.syscall_whitelist</command> to 16
576 (or 54 if using i686).
577 </para>
578
579 <para>
580 If you use <command>pulseaudio</command> in a Desktop Environment, it
581 might already be started by that DE. But if it is not, although
582 firefox-57 managed to start it, firefox-58 did not. If you run
583 <command>firefox</command> from a terminal and this problem is present,
584 trying to play sound will
585 encounter error messages warning <literal>Can't get cubeb
586 context!</literal>
587 </para>
588
589 <para>
590 The fix for this is to close firefox, start pulseaudio to check it
591 does start (if not, read the information on Configuring in <xref
592 linkend="pulseaudio"/>) and restart firefox to check it is working.
593 If it now works, add the following to your <filename>~/.xinitrc</filename>:
594<phrase revision="sysv">
595<literal>pulseaudio --verbose --log-target=syslog&amp;</literal></phrase>
596<phrase revision="systemd">
597<literal>pulseaudio --verbose --log-target=journald&amp;</literal></phrase>
598 (unfortunately, on some systems this does not work).
599 </para>
600
601 <para>
602 You may wish to use multiple profiles within firefox. To do that, invoke
603 firefox as <command>firefox --ProfileManager</command>. You can also
604 check which profile is currently in use from
605 <command>about:profiles</command>.
606 </para>
607
608 <para>
609 Although WebRender (using the GPU for compositing) is not used by
610 default, it now appears to work well on supported hardware (ATI, Nvidia
611 and Intel GPUs with Mesa-18 or later). For an explanation, please see
612 <ulink
613 url="https://hacks.mozilla.org/2017/10/the-whole-web-at-maximum-fps-how-webrender-gets-rid-of-jank/">hacks.mozilla.org</ulink>.
614 The only downside seems to be that on a machine with limited RAM it might
615 use more RAM.
616 </para>
617
618 <para>
619 To check if WebRender is being used, look in about:support. In the Graphics
620 section, Compositing will either show 'Basic' (i.e. not in use) or
621 'WebRender'. To enable it, go to about:config and change gfx.webrender.all
622 to True. You will need to restart firefox.
623 </para>
624
625 <para>
626 It may be useful to mention the processes from firefox which can appear in
627 <command>top</command> - as well as firefox itself, there may be multiple
628 Web Content processes, and now an RDD Process (Remote Data Decoder) which
629 appears when playing web videos encoded with av1 (libdav1d). If WebRender
630 has been enabled, a GPU Process will also appear when firefox has to
631 repaint (e.g. scrolling, opening a new tab, or playing a video).
632 </para>
633
634 </sect3>
635 </sect2>
636
637 <sect2 role="content">
638 <title>Contents</title>
639
640 <segmentedlist>
641 <segtitle>Installed Programs</segtitle>
642 <segtitle>Installed Libraries</segtitle>
643 <segtitle>Installed Directory</segtitle>
644
645 <seglistitem>
646 <seg>
647 firefox
648 </seg>
649 <seg>
650 Numerous libraries, browser components, plugins, extensions, and
651 helper modules installed in /usr/lib/firefox
652 </seg>
653 <seg>
654 /usr/lib/firefox
655 </seg>
656 </seglistitem>
657 </segmentedlist>
658
659 <variablelist>
660 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
661 <?dbfo list-presentation="list"?>
662 <?dbhtml list-presentation="table"?>
663
664 <varlistentry id="firefox-prog">
665 <term><command>firefox</command></term>
666 <listitem>
667 <para>
668 is a <application>GTK+-3</application> internet browser that uses
669 the Mozilla Gecko rendering engine
670 </para>
671 <indexterm zone="firefox firefox-prog">
672 <primary sortas="b-firefox">firefox</primary>
673 </indexterm>
674 </listitem>
675 </varlistentry>
676
677 </variablelist>
678
679 </sect2>
680
681</sect1>
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