Comment 35 for bug 1173761

I have also successfully built the module for kernel 3.8.0-27

root@htpc:/usr/src/b43b1-6.30.223.95# dkms add -m b43b1 -v 6.30.223.95

Creating symlink /var/lib/dkms/b43b1/6.30.223.95/source ->
                 /usr/src/b43b1-6.30.223.95

DKMS: add completed.
root@htpc:/usr/src/b43b1-6.30.223.95# dkms build -m b43b1 -v 6.30.223.95

Kernel preparation unnecessary for this kernel. Skipping...

Building module:
cleaning build area....
make KERNELRELEASE=3.8.0-27-generic....
cleaning build area....

DKMS: build completed.
root@htpc:/usr/src/b43b1-6.30.223.95# dkms install -m b43b1 -v 6.30.223.95

wl:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/3.8.0-27-generic/updates/dkms/

depmod....

DKMS: install completed.

root@htpc:/usr/src/b43b1-6.30.223.95# iwconfig
eth0 no wireless extensions.

eth1 IEEE 802.11abg ESSID:off/any
          Mode:Managed Access Point: Not-Associated Tx-Power=200 dBm
          Retry long limit:7 RTS thr:off Fragment thr:off
          Encryption key:off
          Power Management:off

This is on a ASROCK Z87E-ITX board with half size mPCIe Wifi ac module onboard.
lspci -n
02:00.0 0280: 14e4:43b1 (rev 03)