see the following diagnostic from the build says the Linux Kernal headers could not be found root@FriendlyELEC:~/rt8192cu# make dkms rm -fr *.mod.c *.mod *.o .*.cmd *.ko *~ rm .tmp_versions -fr ; rm Module.symvers -fr rm -fr Module.markers ; rm -fr modules.order cd core/efuse ; rm -fr *.mod.c *.mod ...