rtnetlink kernel link errors with Intel 4965 Drivers

In my last blog I mentioned some instructions I'd run across for building the Open Source Intel drivers for the i4965 that ships with Lenovo T-61s. I more or less followed the instructions but am still getting the follwing error:

net/wireless/wext.c: In function ‘rtnetlink_fill_iwinfo’:
net/wireless/wext.c:1136: warning: initialization discards qualifiers from pointer target type
  CC      net/wireless/core.o
  CC      net/wireless/sysfs.o
  LD      net/wireless/cfg80211.o
  LD      net/wireless/built-in.o
  LD      net/built-in.o
  GEN     .version
  CHK     include/linux/compile.h
  UPD     include/linux/compile.h
  CC      init/version.o
  LD      init/built-in.o
  LD      .tmp_vmlinux1
net/built-in.o: In function `rtnl_getlink':
rtnetlink.c:(.text+0x10c69): undefined reference to `wireless_rtnetlink_get'
net/built-in.o: In function `rtnl_setlink':
rtnetlink.c:(.text+0x11372): undefined reference to `wireless_rtnetlink_set'
make: *** [.tmp_vmlinux1] Error 1