Install Erroron Aarch64 device.

[spikerguy]

I am trying to install this in Aarch64 device running RK3399
It is throwing this error which to me looks like it is looking in wrong directory

DKMS make.log for rtl8723de-5.1.1.8_21285.20171026_COEX20170111-1414 for kernel 5.8.6-1-MANJARO-ARM (aarch64)
Fri Sep 18 09:44:01 PM +03 2020
/bin/sh: bc: command not found
make ARCH=aarch64 CROSS_COMPILE= -C /lib/modules/5.8.6-1-MANJARO-ARM/build M=/var/lib/dkms/rtl8723de-5.1.1.8_21285.20171026_COEX20170111/1414/build  modules
make[1]: Entering directory '/usr/lib/modules/5.8.6-1-MANJARO-ARM/build'
Makefile:685: arch/aarch64/Makefile: No such file or directory
make[1]: *** No rule to make target 'arch/aarch64/Makefile'.  Stop.
make[1]: Leaving directory '/usr/lib/modules/5.8.6-1-MANJARO-ARM/build'
make: *** [Makefile:1886: modules] Error 2

if ARCH=aarch64 then it should be arch/arm64 and not arch/aarch64

Thanks.