Building Firefox 32-bit On Linux 64-bit¶
Unless you really want to target older hardware, you probably want to Build Firefox 64-bit since it is better-supported.
Before following these 32-bit-Firefox-specific instructions, follow the Building Firefox On Linux instructions to ensure that your machine can do a normal build.
Instructions for Ubuntu 19.10¶
These steps were verified to work as of June 2020.
rustup target install i686-unknown-linux-gnuto install the 32-bit Rust target.
Install 32-bit dependencies with the following command (this shouldn’t try to remove packages. If this is the case, those instructions won’t work as-is):
sudo apt install gcc-multilib g++-multilib libdbus-glib-1-dev:i386 \ libgtk2.0-dev:i386 libgtk-3-dev:i386 libpango1.0-dev:i386 libxt-dev:i386 \ libx11-xcb-dev:i386 libpulse-dev:i386 libdrm-dev:i386
Then, create a
mozconfigfile in your Firefox code directory (probably
mozilla-unified) that looks like the following example: