Kernel preparation unnecessary for this kernel. Skipping...
Building module:
cleaning build area...
make -j1 KERNELRELEASE=4.15.0-70-generic KVER=4.15.0-70-generic......
Signing module:
- /var/lib/dkms/broadcom-sta/6.30.223.271/4.15.0-70-generic/x86_64/module/wl.ko
EFI variables are not supported on this system
/sys/firmware/efi/efivars not found, aborting.
cleaning build area...
$ sudo dkms build broadcom- sta/6.30. 223.271 -k 4.15.0-70-generic
Kernel preparation unnecessary for this kernel. Skipping...
Building module: 4.15.0- 70-generic KVER=4. 15.0-70- generic. ..... dkms/broadcom- sta/6.30. 223.271/ 4.15.0- 70-generic/ x86_64/ module/ wl.ko efi/efivars not found, aborting.
cleaning build area...
make -j1 KERNELRELEASE=
Signing module:
- /var/lib/
EFI variables are not supported on this system
/sys/firmware/
cleaning build area...
DKMS: build completed.
$