I just installed a new Ubuntu 22.04 system on my desktop. I installed build-essentials and started installing drivers for my wifi adapter. I downloaded the rtl8821CU source code and ran make. I get the following error:
root@vsc:/home/vito/Downloads/rtl8821CU-master# makemake ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/6.8.0-40-generic/build M=/home/vito/Downloads/rtl8821CU-master modulesmake[1]: Entering directory '/usr/src/linux-headers-6.8.0-40-generic'warning: the compiler differs from the one used to build the kernel The kernel was built by: x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0 You are using: gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0 CC [M] /home/vito/Downloads/rtl8821CU-master/core/rtw_cmd.o/home/vito/Downloads/rtl8821CU-master/core/rtw_cmd.c:29:1: error: unknown type name ‘sint’; did you mean ‘int’? 29 | sint _rtw_init_cmd_priv(struct cmd_priv *pcmdpriv) | ^~~~ | int/home/vito/Downloads/rtl8821CU-master/core/rtw_cmd.c:29:41: warning: ‘struct cmd_priv’ declared inside parameter list will not be visible outside of this definition or declaration 29 | sint _rtw_init_cmd_priv(struct cmd_priv *pcmdpriv) | ^~~~~~~~...home/vito/Downloads/rtl8821CU-master/core/rtw_cmd.c: In function ‘rtw_cmd_filter’:/home/vito/Downloads/rtl8821CU-master/core/rtw_cmd.c:438:1: error: control reaches end of non-void function [-Werror=return-type] 438 | } | ^cc1: some warnings being treated as errorsmake[3]: *** [scripts/Makefile.build:243: /home/vito/Downloads/rtl8821CU-master/core/rtw_cmd.o] Error 1make[2]: *** [/usr/src/linux-headers-6.8.0-40-generic/Makefile:1926: /home/vito/Downloads/rtl8821CU-master] Error 2make[1]: *** [Makefile:240: __sub-make] Error 2make[1]: Leaving directory '/usr/src/linux-headers-6.8.0-40-generic'make: *** [Makefile:2217: modules] Error 2root@vsc:/home/vito/Downloads/rtl8821CU-master# Please tell me what can be done to ensure successful assembly?