[Solved] Can't compile qjackctl from portage or source

[d9nis]

Here the context and build log

http://pastebin.archlinux.fr/450285
http://pastebin.archlinux.fr/450286

After searching for a while I find only one case like mine on qjackctl and it doesn't solve my issue (It says to compile without sandbox features). So it seems that it comes from Qt4 (already some issues with VLC but it's not the right topic for now). I've completely reinstall my gentoo this week-end for investigate about qjackctl but nothing more comes to help me.

Thank you for help!

EDIT I: I just try to compile from archlinux it do the stuff very well u_u.
EDIT II: https://bugs.gentoo.org/show_bug.cgi?id=413789

EDIT III :Ok install qt-xmlpatterns do the trick, issue solved.
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