Enabling the [multilib] repository allows the user to run and build 32-bit applications on 64-bit installations of Arch Linux. [multilib] creates a directory containing 32-bit instruction set libraries inside
/usr/lib32/, which 32-bit binary applications may need when executed.
To use the [multilib] repository, uncomment the following from
[multilib] SigLevel = PackageRequired Include = /etc/pacman.d/mirrorlist
A 64-bit installation of Arch Linux with [multilib] enabled follows a directory structure similar to Debian. The 32-bit compatible libraries are located under
/usr/lib32/, and the native 64-bit libraries under