problem 1:
Makefile:682: arch/aarch64/Makefile: No such file or directory
solution:
sudo ln -s /usr/src/linux-headers-5.10.92-v8+/arch/arm64/ /usr/src/linux-headers-5.10.92-v8+/arch/aarch64
problem 2:
gcc: error: unrecognized command-line option ‘-mhard-float’
solution:
in file rtl8821CU/Makefile line 1216:
EXTRA_CFLAGS += -mhard-float
disable it.
problem 1: Makefile:682: arch/aarch64/Makefile: No such file or directory solution: sudo ln -s /usr/src/linux-headers-5.10.92-v8+/arch/arm64/ /usr/src/linux-headers-5.10.92-v8+/arch/aarch64
problem 2: gcc: error: unrecognized command-line option ‘-mhard-float’
solution: in file rtl8821CU/Makefile line 1216: EXTRA_CFLAGS += -mhard-float disable it.