I think it's related to support for qt5 in a recent commits
In file included from /var/tmp/portage/media-libs/opencv-9999/work/OpenCV-9999/modules/highgui/src/window_QT.cpp:46:0:
/var/tmp/portage/media-libs/opencv-9999/work/OpenCV-9999/modules/highgui/src/window_QT.h:81:17: fatal error: QTest: No such file or directory
Is it trunk version problem or only my?
System:
Linux machine 3.5.7-gentoo #2 SMP