Firefox-115.5.0esr

Installation of Firefox

The building system ships several internal copies of the Python 3 modules setuptools and six.py. The shipped copies are too old to work well with Python 3.12 or later. Replace them with the symlinks to the LFS setuptools package and six-1.16.0 already installed on the system, and adapt the building system for these updated Python modules. We also need to rewrite the code based on the imp module removed in Python 3.12 and later using the importlib module:

(for i in $(find -name six.py); do
   ln -sfv /usr/lib/python3.12/site-packages/six.py $i
   [ $? = 0 ] || exit $?
 done) &&

sed '/ConfigParser/s/Safe//'                          \
    -i testing/mozbase/mozprofile/mozprofile/prefs.py &&

(for i in setuptools distutils-precedence.pth  \
          pkg_resources _distutils_hack; do
   rm -rf third_party/python/setuptools/$i     &&
   ln -sv /usr/lib/python3.12/site-packages/$i \
          third_party/python/setuptools
   [ $? = 0 ] || exit $?
 done) &&

sed 's/distutils/setuptools._&/'            \
    -i python/mozbuild/mozbuild/nodeutil.py &&

sed -e '/^import/s/imp$/importlib.util/'             \
    -e 's/imp.new_module/__import__/'                \
    -e "s/imp.load_source\(.*\)/spec =               \
        importlib.util.spec_from_file_location\1;    \
        mod = importlib.util.module_from_spec(spec); \
        spec.loader.exec_module(mod)/" -i python/mach/mach/main.py &&
sed '/import imp/d' -i netwerk/dns/prepare_tlds.py

If building with system ICU, adapt the line break mapping for ICU 74 or later:

(for i in {43..47}; do
   sed '/ZWJ/s/}/,CLASS_CHARACTER&/' -i intl/lwbrk/LineBreaker.cpp || exit $?
 done)

The configuration of Firefox is accomplished by creating a mozconfig file containing the desired configuration options. A default mozconfig is created below. To see the entire list of available configuration options (and an abbreviated description of some of them), issue ./mach configure -- --help | less. You may also wish to review the entire file and uncomment any other desired options. Create the file by issuing the following command:

cat > mozconfig << "EOF"
# If you have a multicore machine, all cores will be used by default.

# If you have installed (or will install) wireless-tools, and you wish
# to use geolocation web services, comment out this line
ac_add_options --disable-necko-wifi

# API Keys for geolocation APIs - necko-wifi (above) is required for MLS
# Uncomment the following line if you wish to use Mozilla Location Service
#ac_add_options --with-mozilla-api-keyfile=$PWD/mozilla-key

# Uncomment the following line if you wish to use Google's geolocation API
# (needed for use with saved maps with Google Maps)
#ac_add_options --with-google-location-service-api-keyfile=$PWD/google-key

# startup-notification is required since firefox-78

# Uncomment the following option if you have not installed PulseAudio and
# want to use alsa instead
#ac_add_options --enable-audio-backends=alsa

# Comment out following options if you have not installed
# recommended dependencies:
ac_add_options --with-system-icu
ac_add_options --with-system-libevent
ac_add_options --with-system-libvpx
ac_add_options --with-system-nspr
ac_add_options --with-system-nss
ac_add_options --with-system-webp

# Unlike with thunderbird, although using the gold linker can
# save four megabytes in the installed file it does not make
# the build faster.

# The libdav1d library (av1 decoder) requires nasm. Uncomment this
# if nasm has not been installed. Do not uncomment this if you have
# ffmpeg installed.
#ac_add_options --disable-av1

# You cannot distribute the binary if you do this.
ac_add_options --enable-official-branding

# Stripping is now enabled by default.
# Uncomment these lines if you need to run a debugger:
#ac_add_options --disable-strip
#ac_add_options --disable-install-strip

# Disabling debug symbols makes the build much smaller and a little
# faster. Comment this if you need to run a debugger. Note: This is
# required for compilation on i686.
ac_add_options --disable-debug-symbols

# The elf-hack is reported to cause failed installs (after successful builds)
# on some machines. It is supposed to improve startup time and it shrinks
# libxul.so by a few MB.  With recent Binutils releases the linker already
# supports a much safer and generic way for this.
ac_add_options --disable-elf-hack
export LDFLAGS="$LDFLAGS -Wl,-z,pack-relative-relocs"

# The BLFS editors recommend not changing anything below this line:
ac_add_options --prefix=/usr
ac_add_options --enable-application=browser
ac_add_options --disable-crashreporter
ac_add_options --disable-updater

# Enabling the tests will use a lot more space and significantly
# increase the build time, for no obvious benefit.
ac_add_options --disable-tests

# This enables SIMD optimization in the shipped encoding_rs crate.
ac_add_options --enable-rust-simd

ac_add_options --enable-system-ffi
ac_add_options --enable-system-pixman

ac_add_options --with-system-jpeg
ac_add_options --with-system-png
ac_add_options --with-system-zlib

# Sandboxing works well on x86_64 but might cause issues on other
# platforms. If not on x86_64, e.g. i686, it is recommended to
# uncomment the following switch.
#ac_add_options --disable-sandbox

# Using sandboxed wasm libraries has been moved to all builds instead
# of only mozilla automation builds. It requires extra llvm packages
# and was reported to seriously slow the build. Disable it.
ac_add_options --without-wasm-sandboxed-libraries

# The following option unsets Telemetry Reporting. With the Addons Fiasco,
# Mozilla was found to be collecting user's data, including saved passwords and
# web form data, without users consent. Mozilla was also found shipping updates
# to systems without the user's knowledge or permission.
# As a result of this, use the following command to permanently disable
# telemetry reporting in Firefox.
unset MOZ_TELEMETRY_REPORTING

mk_add_options MOZ_OBJDIR=@TOPSRCDIR@/firefox-build-dir
EOF

Compile Firefox by issuing the following commands:

If the geolocation APIs are needed:

Note

The Google and Mozilla API Keys below are specific to LFS. If using these instructions for another distro, or if you intend to distribute binary copies of the software using these instructions, please obtain your own keys following the instructions located at https://www.chromium.org/developers/how-tos/api-keys and https://location.services.mozilla.com/api respectively.

echo "AIzaSyDxKL42zsPjbke5O8_rPVpVrLrJ8aeE9rQ" > google-key
echo "613364a7-9418-4c86-bcee-57e32fd70c23" > mozilla-key

Note

If you are compiling this package in chroot you must ensure that /dev/shm is mounted. If you do not do this, the Python configuration will fail with a traceback report referencing /usr/lib/pythonN.N/multiprocessing/synchronize.py. As the root user, run:

mountpoint -q /dev/shm || mount -t tmpfs devshm /dev/shm

Now invoke the Python mach script to compile the package.

export MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE=none &&
export MOZBUILD_STATE_PATH=${PWD}/mozbuild          &&
./mach configure                                    &&
./mach build

The mozconfig above disables the tests because they use a lot more time and disk space for no obvious benefit. If you have nevertheless enabled them, you can run the tests by executing ./mach gtest. This will require a network connection, and to be run from within an Xorg session - there is a popup dialog when it fails to connect to ALSA (that does not create a failed test). One or two tests will fail. To see the details of the failure(s) you will need to log the output from that command so that you can review it.

Now, as the root user:

MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE=none ./mach install

Empty the environment variables which were set above:

unset MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE MOZBUILD_STATE_PATH