[Libreoffice] libreoffice 3.4.2.3

Hello.

I am a Gentoo user and I just subscribed to this list. Today
libreoffice 3.4.2.3 was added to portage and sane-backends appeared as
a new dependency. From my research I guessed that this is controlled
via the --with-system-sane configure flag, but I tried adding
--without-system-sane to the ebuild, and the configure script still
fails telling me that sane.h wasn't found.

checking for sane/sane.h... no
configure: error: sane not found. install sane

So, is it possible to build libreoffice 3.4.2.3 without installing sane?

Thanks beforehand.

-- 
Jesús Guerrero Botella