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Bug 1648393 - Update this document for Ubuntu and remove obsolete section. r=firefox-source-docs-reviewers,sylvestre
Differential Revision: https://phabricator.services.mozilla.com/D81043
This commit is contained in:
Paul Adenot
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b42eda7890
Коммит
f2892793be
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@ -1,5 +1,5 @@
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Building Firefox 32bit On Linux 64bit
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=====================================
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Building Firefox 32-bit On Linux 64-bit
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=======================================
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Instructions for Fedora 20 and 19
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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@ -17,8 +17,6 @@ are installed.
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glib-devel.i686 glib2-devel.i686 \
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dbus-devel.i686 dbus-glib-devel.i686 \
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alsa-lib-devel.i686 yasm-devel.i686 \
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gstreamer-devel.i686 gstreamer-plugins-devel.i686 \
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gstreamer-plugins-base-devel.i686 \
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libxml2-devel.i686 zlib-devel.i686 \
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freetype-devel.i686 \
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atk-devel.i686 pango-devel.i686 fontconfig-devel.i686 \
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@ -51,218 +49,31 @@ Then you need to use a .mozconfig that looks like the following example.
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ac_add_options --enable-debug
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ac_add_options --disable-optimize
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Instructions for Ubuntu 18.10
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Instructions for Ubuntu 19.10
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. warning::
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These steps were verified to work as of June 2020
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WARNING: Although Ubuntu and other Debian-derived distributions
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support multiarch packages these days, there are still cases where
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packages are broken, or where the 32-bit and 64-bit versions of a
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package conflict. This makes it difficult to impossible to have a
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32-bit development environment co-exist with a 64-bit development
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environment. **So it is recommended to follow these instructions in a
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separate virtual machine!**
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These steps were verified to work as of December 2018:
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#. Set up a new virtual machine running Ubuntu 18.10.
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#. Install python with ``sudo apt install python``.
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#. Install mercurial or git and fetch a copy of mozilla-central.
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#. Install mercurial or git and :ref:`fetch a copy <Mercurial Bundles>` of ``mozilla-central``.
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#. Run ``./mach bootstrap`` to install some dependencies. Note that this
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will install some amd64 packages that are not needed to build 32-bit
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Firefox.
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#. Run ``rustup target install i686-unknown-linux-gnu`` to install the
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32-bit Rust target.
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#. Install 32-bit dependencies with the following command (this may
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uninstall some unneeded/conflicting packages that were installed by
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mach bootstrap):
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#. Install 32-bit dependencies with the following command (this shouldn't try to
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remove packages. If this is the case, those instructions won't work as-is):
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.. code:: syntaxbox
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.. code:: syntaxbox
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sudo apt install gcc-multilib g++-multilib libdbus-glib-1-dev:i386 \
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libgtk2.0-dev:i386 libgtk-3-dev:i386 libpango1.0-dev:i386 libxt-dev:i386
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sudo apt install gcc-multilib g++-multilib libdbus-glib-1-dev:i386 \
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libgtk2.0-dev:i386 libgtk-3-dev:i386 libpango1.0-dev:i386 libxt-dev:i386 \
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libpulse-dev:i686
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7. Create a ``.mozconfig`` file containing at least the following:
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5. Create a file called ``mozconfig`` in the top-level directory of you
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``mozilla-central`` checkout, containing at least the following:
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.. code:: syntaxbox
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.. code:: syntaxbox
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ac_add_options --target=i686-pc-linux
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ac_add_options --target=i686
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CFLAGS="$CFLAGS -march=pentium-m -msse -msse2 -mfpmath=sse"
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CXXFLAGS="$CXXFLAGS -march=pentium-m -msse -msse2 -mfpmath=sse"
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export PKG_CONFIG_PATH=/usr/lib/i386-linux-gnu/pkgconfig
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8. Run ``./mach build``.
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Older, generic instructions for Ubuntu
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Method 1: True Cross-Compiling
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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This method is actually cross-compiling: you take a 64-bit toolchain and
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produce 32-bit binaries. This is ideally how you cross-compile.
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#. ``sudo apt-get install ia32-libs gcc-multilib g++-multilib lib32*``
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#. (I had to open Synaptic afterwards, search for package names
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beginning with lib32, and install the ones that apt-get missed)
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#. Use a ``.mozconfig`` like below.
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#. ``make -f client.mk build``
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::
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export CROSS_COMPILE=1
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mk_add_options MOZ_OBJDIR=@TOPSRCDIR@/objdir-ff-dbg32
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mk_add_options MOZ_MAKE_FLAGS="-s -j4"
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ac_add_options --enable-application=browser
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CC="gcc -m32"
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CXX="g++ -m32"
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AR=ar
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ac_add_options --x-libraries=/usr/lib32
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ac_add_options --target=i686-pc-linux
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ac_add_options --disable-crashreporter # needed because I couldn't find a 32-bit curl-dev lib
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ac_add_options --disable-libnotify # needed because I couldn't find a 32-bit libinotify-dev
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ac_add_options --disable-gnomevfs # needed because I couldn't find a 32-bit libgnomevfs-dev
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ac_add_options --disable-gstreamer # needed because I couldn't find a 32-bit gstreamer lib
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If you are getting an error as follows:
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::
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error: Can't find header fontconfig/fcfreetype.h
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Add these configuration options to your ``.mozconfig``:
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::
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ac_add_options --disable-freetypetest
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ac_add_options --disable-pango
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Method 2: Create a 32-bit chroot Environment
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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In this method, we effectively create a wholly-contained 32-bit
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operating system within a 64-bit operating system using ``schroot``.
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This isn't technically cross-compiling, but it yields the same result:
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32-bit binaries.
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This method is arguably more reliable than true cross-compiling because
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the newly-created environment is completely isolated from the 64-bit
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operating system and it won't be susceptible to common issues with
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cross-compiling, such as unavailability of 32-bit libraries/packages
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when running in 64-bit mode. Additionally, since your 32-bit environment
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is completely isolated, to clean up from it, you just ``rm -rf`` the
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chroot directory. Contrast this with removing dozens of 32-bit packages
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from your primary operating system.
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The downside to this method is size and complexity. Since you will be
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effectively creating a whole operating system within your primary
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operating system, there will be lots of redundant files. You'll probably
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need at least 1GB for all the new files. Additionally, the steps for
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initially creating the 32-bit environment are more involved. See the
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bottom of this page for a script capable of automating the whole process
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of cross-compilation.
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To create a 32-bit chroot Ubuntu environment, follow the
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`DebootstrapChroot <https://help.ubuntu.com/community/DebootstrapChroot>`__
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instructions. Here is an example config file which works in Ubuntu
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13.10:
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::
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# /etc/schroot/chroot.d/saucy_i386
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[saucy_i386]
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description=Ubuntu 13.10 for i386
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directory=/srv/chroot/saucy_i386
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root-users=gps
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type=directory
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personality=linux32
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users=gps
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Once you have changed the ``root-users`` and ``users`` entries to
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include your username and verified that ``$ schroot -c saucy_i386``
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works, ``$ exit`` back to your regular operating system and copy your
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APT's sources list to the new environment:
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::
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$ sudo cp /etc/apt/sources.list /srv/chroot/saucy_i386/etc/apt/sources.list
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**Note: this assumes a generic sources list. If you have modified this
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file yourself, you may wish to ensure the contents are accurate when you
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perform the copy.**
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The reason we copy the APT sources is because ``debootstrap``\ does not
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appear to configure all the sources by default (it doesn't define the
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"sources" sources, for example).
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Once your sources list is copied over, enter your new environment and
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configure things:
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::
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# Update the APT sources and install sudo into the new environment and exit back out
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$ schroot -c saucy_i386 -u root
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(precise_i386) # apt-get update
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(precise_i386) # apt-get install sudo
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(precise_i386) # exit
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# re-enter the environment as a regular user
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$ schroot -c saucy_i386
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# Install Firefox build dependencies
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$ sudo apt-get build-dep firefox
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Now, your new 32-bit operating system should be ready for building
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Firefox!
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| One last step is ensuring that ``configure``\ detects the proper
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system type. Since you are technically running on a 64-bit kernel,
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things could still be fooled.
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| Run the following program from your mozilla source tree:
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::
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$ ./build/autoconf/config.guess
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**If this prints anything with ``x86_64``, the system type is being
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incorrectly detected and you must override it.** You can fix things by
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adding the following to your ``mozconfig``:
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::
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ac_add_options --host=i686-pc-linux-gnu
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ac_add_options --target=i686-pc-linux-gnu
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When you run configure (``$ mach configure``), verify that the host,
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target, and build system types are what you just defined in your
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``mozconfig``:
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::
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checking host system type... i686-pc-linux-gnu
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checking target system type... i686-pc-linux-gnu
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checking build system type... i686-pc-linux-gnu
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If you intend to run the 32bits Firefox build in the chroot on the
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64bits machine, you need to install a few packages in the host:
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::
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sudo apt-get install gcc-multilib g++-multilib libxrender1:i386 libasound-dev:i386 libdbus-glib-1-2:i386 libgtk2.0-0:i386 libxt-dev:i386
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Now, follow the `build
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instructions </En/Developer_Guide/Build_Instructions>`__ like normal and
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you should have 32-bit builds!
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See Also
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~~~~~~~~
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- `Cross-Compiling Mozilla </en/Cross-Compiling_Mozilla>`__
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- `Set of scripts to automate the chroot and build process on
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Ubuntu <https://github.com/padenot/fx-32-on-64.sh>`__
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6. Run ``./mach build``.
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