localhost ~ # emerge -NDu world
Calculating world dependencies... done!
>>> Emerging (1 of 54) net-dns/libidn-0.5.15 to /
>>> checking ebuild checksums ;-)
>>> checking auxfile checksums ;-)
>>> checking miscfile checksums ;-)
>>> checking libidn-0.5.15.tar.gz ;-)
* Enabling generation-2 compatibility ...
* There was a problem determining which VM to use for generation-1
* You may need to set your generation-1 VM again, and run env-update && source/etc/profile
* Also, make sure you have followed the Java Upgrade Guide:
* http://www.gentoo.org/proj/en/java/java-upgrade.xml [ !! ]
!!! ERROR: net-dns/libidn-0.5.15 failed.
Call stack:
ebuild.sh, line 1555: Called dyn_setup
ebuild.sh, line 668: Called pkg_setup
ebuild.sh, line 1248: Called java-pkg_pkg_setup
java-pkg.eclass, line 41: Called die
!!! Couldn't determine VM for generation-1
!!! If you need support, post the topmost build error, and the call stack if relevant.