cannot find dependencies in AUR

[leonixyz]

Using Arch Linux, freshly installed one week ago; just (re)installed package-query and yaourt as described here, and trying to install skype:

$ yaourt -S skype

[...]

==> skype dependencies:
 - xdg-utils (already installed)
 - hicolor-icon-theme (already installed)
 - lib32-libpulse (building from AUR)
 - lib32-qt4 (building from AUR)
 - lib32-libxss (building from AUR)
 - lib32-libxv (building from AUR)
 - lib32-libxcursor (building from AUR)
 - lib32-v4l-utils (building from AUR)

==> Continue building skype ? [Y/n]
==> -------------------------------
==> 

==> Building and installing package
==> Install or build missing dependencies for skype:
error: target not found: lib32-libxv
error: target not found: lib32-libpulse
error: target not found: lib32-qt4
error: target not found: lib32-libxcursor
error: target not found: lib32-v4l-utils
error: target not found: lib32-libxss

Trying to install dependencies singularly also doesn't work

$ yaourt -Sa lib32-libxv
error: target not found: lib32-libxv

When doing yaourt -Syua it seems the AUR repository is not updated. If I remember correctly there should be another line under community marked AUR, right?

$ yaourt -Syua
 core is up to date
 extra is up to date
 community is up to date
 Foreign packages: | 4 / 4

[...]

I'm not familiar in submitting issues, please excuse me if I didn't provided all details. In case just tell me if there is something else I can provide.

Regards

[leonixyz]

Excuse me, just forget to enable multilib from pacman repos