x11/nvidia-driver: make -B clean all ===> Cleaning for nvidia-driver-331.38 *** [all] Stopped -- signal 22

Since the last Update of the ports tree buidling the nvidia GPU driver
from port x11/nvidia-driver doesn't work properly anymore, when the
build is done via

/etc/src.conf:
PORTS_MODULES=
PORTS_MODULES+=         x11/nvidia-driver
PORTS_MODULES+=         emulators/virtualbox-ose-kmod

this happens with the version nvidia-driver-331.38 as well as with
nvidia-driver-331.20. See error below. It allways ends with 

WRKDIRPREFIX=/usr/obj/usr/src/sys/THOR make -B clean all ===>  Cleaning
for nvidia-driver-331.38 *** [all] Stopped -- signal 22

The SIGNAL 22 ( SIGTTOU) sounds strange to me.


Building the port x11/nvidia-driver via portmaster works well, but I
receive two times the option box and once options selected, I'm getting
asked all the time again, twice. this strange behaviour occured on all
11.0-CURRENT machines I have the same time (with nVidia cards).

Performing 

make rmconfig

in ports main directory at x11/nvidia-driver doesn't resolve the
problem.

Regards,

Oliver


 ===> Ports module x11/nvidia-driver (all)
cd ${PORTSDIR:-/usr/ports}/x11/nvidia-driver;
PATH=/usr/obj/usr/src/tmp/legacy/usr/sbin:/usr/obj/usr/src/tmp/legacy/usr/bin:/usr/obj/usr/src/tmp/legacy/usr/games:/usr/obj/usr/src/tmp/legacy/bin:/usr/obj/usr/src/tmp/usr/sbin:/usr/obj/usr/src/tmp/usr/bin:/usr/obj/usr/src/tmp/usr/games:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin:/usr/local/sbin
SRC_BASE=/usr/src  OSVERSION=1100007
WRKDIRPREFIX=/usr/obj/usr/src/sys/THOR make -B clean all ===>  Cleaning
for nvidia-driver-331.38 *** [all] Stopped -- signal 22