[gentoo-user] How to trace the origin of a use-flag setting

[Helmut Jarausch]

Hi,

emerge -vp app-office/libreoffice

shows that the USE flag  -java  is in effect.

How to find out where this comes from?

I've checked  /etc/portage/package.use  /usr/portage/profiles  and  /
etc/make.conf

Many thanks for a hint,
Helmut.