I downloaded the CP210x_VCP_Linux and try to follow the instrution in the TXT file in the drive but I'm not able to continue.

Build instrutions:

Ubuntu:

1. make ( your cp210x driver )
2. cp cp210x.ko to /lib/modules/<kernel-version>/kernel/drivers/usb/serial
3. insmod /lib/modules/<kernel-version/kernel/drivers/usb/serial/usbserial.ko
4. insmod cp210x.ko

$ make cp210x.c
make: Nessuna operazione da eseguire per «cp210x.c».

Someone can help me?
Thank you!