Getting quite a few build failures

[spectromas 12]

media-libs/opencv - http://sprunge.us/cZgb
media-sound/cantata - http://sprunge.us/iMjg
media-gfx/nomacs - http://sprunge.us/LPFV

 

I don't really mind not having these packages but they all seem to be related qt. Is there something I am missing that's causing this?

 

 

[spectromas 12]

I've solved this, it turns out that for some reason my qtchooser directory and settings was wiped out, creating them manually fixed the issues I was having.

http://www.linuxfromscratch.org/blfs/view/7.4/general/qtchooser.html

https://forums.gentoo.org/viewtopic-p-7732440.html