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Revision as of 05:16, 2 April 2014 by SnowOnion (talk | contribs) (Enabling)
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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.

Directory structure

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 /usr/lib/.


To use the multilib repository, uncomment the [multilib] section in /etc/pacman.conf (Please be sure to uncomment both two lines):

Include = /etc/pacman.d/mirrorlist

Then update the package list and upgrade with pacman -Syu.

Note: Arch Linux doesn't support partial upgrades so -u is necessary.


To revert to a pure 64-bit system, uninstalling multilib:

Execute the following command to remove all packages that were installed from multilib:

# pacman -R $(paclist -q multilib)

If you have conflicts with gcc-libs reinstall the 64-bit versions and try the previous command again:

# pacman -S gcc-libs base-devel

Comment out the [multilib] section in /etc/pacman.conf:

#Include = /etc/pacman.d/mirrorlist

Then update the package list and upgrade with pacman -Syu.

See also