Make install is broken on 16.04

[hb0]

I am trying to install this workaround on a MacBook 7,1:

user@HBX:/Downloads$ cd mba6x_bl/
user@HBX:/Downloads/mba6x_bl$ make
make -C /lib/modules/4.4.0-83-generic/build M=/home/user/Downloads/mba6x_bl modules
make[1]: Entering directory '/usr/src/linux-headers-4.4.0-83-generic'
CC [M] /home/user/Downloads/mba6x_bl/mba6x_bl.o
Building modules, stage 2.
MODPOST 1 modules
CC /home/user/Downloads/mba6x_bl/mba6x_bl.mod.o
LD [M] /home/user/Downloads/mba6x_bl/mba6x_bl.ko
make[1]: Leaving directory '/usr/src/linux-headers-4.4.0-83-generic'
user@HBX:~/Downloads/mba6x_bl$ sudo make install
make -C /lib/modules/4.4.0-83-generic/build M=/home/user/Downloads/mba6x_bl modules_install
make[1]: Entering directory '/usr/src/linux-headers-4.4.0-83-generic'
INSTALL /home/user/Downloads/mba6x_bl/mba6x_bl.ko
At main.c:222:
SSL error:02001002:system library:fopen:No such file or directory: bss_file.c:175
SSL error:2006D080:BIO routines:BIO_new_file:no such file: bss_file.c:178
sign-file: certs/signing_key.pem: No such file or directory
DEPMOD 4.4.0-83-generic
make[1]: Leaving directory '/usr/src/linux-headers-4.4.0-83-generic'

[hb0]

Sorry, duplicate to #46, closed.
Following this fixed it: #54