Please see the freedesktop bug about the issue: https://bugs.freedesktop.org/show_bug.cgi?id=54016 and the fix: https://bugs.freedesktop.org/attachment.cgi?id=66073&action=edit Reproducible: Always
Occured on my system too (-j7)
+ 22 Sep 2012; Pacho Ramos <pacho@gentoo.org> + +files/telepathy-idle-0.1.12-parallel-make.patch, + telepathy-idle-0.1.12.ebuild: + Fix parallel make issue, bug #435524 by Attila Tóth. +