1 Building Firefox 32-bit On Linux 64-bit
2 =======================================
6 Unless you really want to target older hardware, you probably
7 want to :ref:`Build Firefox 64-bit <Building Firefox On Linux>`
8 since it is better-supported.
10 Before following these 32-bit-Firefox-specific instructions, follow
11 the :ref:`Building Firefox On Linux` instructions to ensure that
12 your machine can do a normal build.
14 Instructions for Ubuntu 19.10
15 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
17 These steps were verified to work as of June 2020.
19 #. Run ``rustup target install i686-unknown-linux-gnu`` to install the
21 #. Install 32-bit dependencies with the following command (this shouldn't try to
22 remove packages. If this is the case, those instructions won't work as-is):
26 sudo apt install gcc-multilib g++-multilib \
27 libgtk2.0-dev:i386 libgtk-3-dev:i386 libpango1.0-dev:i386 libxt-dev:i386 \
28 libx11-xcb-dev:i386 libpulse-dev:i386 libdrm-dev:i386
30 #. Then, create a ``mozconfig`` file in your Firefox code directory
31 (probably ``mozilla-unified``) that looks like the following example:
35 ac_add_options --target=i686
37 #. Run ``./mach build``.