FreeBSD 9: /usr/ports/x11/nvidia-driver-173 broken

[Unga]

Hi all

Following error develops on FreeBSD 9, i386 for /usr/ports/x11/nvidia-driver-173:

cc1: warnings being treated as errors
nvidia_linux.c: In function 'linux_ioctl_nvidia':
nvidia_linux.c:47: warning: implicit declaration of function 'ioctl'
nvidia_linux.c:47: warning: nested extern declaration of 'ioctl' [-Wnested-externs]
*** Error code 1

Stop in /usr/ports/x11/nvidia-driver-173/work/NVIDIA-FreeBSD-x86-173.14.31/src.
*** Error code 1


Best regards
Unga