ia64 r260914 GENERIC kernel: /usr/src/sys/dev/vt/vt_core.c:261: undefined reference to kbd_get_keyboard and so on

ia64 r260914 GENERIC kernel contains:

device          kbdmux          # keyboard multiplexer
device          vt              # Virtual terminals
device          vt_vga          # VGA terminal device

Trying to build it, I get:

linking kernel.debug
vt_core.o: In function `vt_window_switch':
/usr/src/sys/dev/vt/vt_core.c:261: undefined reference to `kbd_get_keyboard'
/usr/src/sys/dev/vt/vt_core.c:263: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:263: undefined reference to `kbdsw'
vt_core.o: In function `vtterm_cnprobe':
/usr/src/sys/dev/vt/vt_core.c:862: undefined reference to `kbd_configure'
vt_core.o: In function `vt_allocate_keyboard':
/usr/src/sys/dev/vt/vt_core.c:559: undefined reference to `kbd_allocate'
/usr/src/sys/dev/vt/vt_core.c:565: undefined reference to `kbd_get_keyboard'
/usr/src/sys/dev/vt/vt_core.c:567: undefined reference to `kbd_find_keyboard2'
/usr/src/sys/dev/vt/vt_core.c:579: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:579: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:570: undefined reference to `kbd_get_keyboard'
/usr/src/sys/dev/vt/vt_core.c:569: undefined reference to `kbd_find_keyboard2'
/usr/src/sys/dev/vt/vt_core.c:583: undefined reference to `kbd_allocate'
vt_core.o: In function `vtterm_ioctl':
/usr/src/sys/dev/vt/vt_core.c:1447: undefined reference to `kbd_get_keyboard'
/usr/src/sys/dev/vt/vt_core.c:1449: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:1449: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:1465: undefined reference to `kbd_get_keyboard'
/usr/src/sys/dev/vt/vt_core.c:1467: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:1467: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:1488: undefined reference to `kbd_get_keyboard'
/usr/src/sys/dev/vt/vt_core.c:1490: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:1490: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:1610: undefined reference to `kbd_get_keyboard'
/usr/src/sys/dev/vt/vt_core.c:1615: undefined reference to `kbd_allocate'
/usr/src/sys/dev/vt/vt_core.c:1619: undefined reference to `kbd_release'
/usr/src/sys/dev/vt/vt_core.c:1622: undefined reference to `kbd_get_keyboard'
/usr/src/sys/dev/vt/vt_core.c:1625: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:1625: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:1637: undefined reference to `kbd_get_keyboard'
/usr/src/sys/dev/vt/vt_core.c:1642: undefined reference to `kbd_release'
vt_core.o: In function `vtterm_cngetc':
/usr/src/sys/dev/vt/vt_core.c:906: undefined reference to `kbd_get_keyboard'
/usr/src/sys/dev/vt/vt_core.c:912: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:912: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:931: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:931: undefined reference to `kbdsw'
vt_core.o: In function `vt_kbdevent':
/usr/src/sys/dev/vt/vt_core.c:539: undefined reference to `kbd_release'
/usr/src/sys/dev/vt/vt_core.c:546: undefined reference to `kbdsw'
/usr/src/sys/dev/vt/vt_core.c:546: undefined reference to `kbdsw'
*** [kernel.debug] Error code 1

Am I missing something else?
Or should these 3 devices be removed from GENERIC?

Thanks

Anton