Handbook:AMD64/Blocks/ProfileChoice

No-multilib

In order to select a pure 64-bit environment, with no 32-bit applications or libraries, use a no-multilib profile:

root #eselect profile list

Available profile symlink targets:
  [1]   default/linux/amd64/23.0 *
  [2]   default/linux/amd64/23.0/desktop
  [3]   default/linux/amd64/23.0/desktop/gnome
  [4]   default/linux/amd64/23.0/desktop/kde
  [5]   default/linux/amd64/23.0/no-multilib

Next select the no-multilib profile:

root #eselect profile set 5

root #eselect profile list

Available profile symlink targets:
  [1]   default/linux/amd64/23.0
  [2]   default/linux/amd64/23.0/desktop
  [3]   default/linux/amd64/23.0/desktop/gnome
  [4]   default/linux/amd64/23.0/desktop/kde
  [5]   default/linux/amd64/23.0/no-multilib *