sudo ./install_drivers
--Install log = ./install_drivers
--Installing cable drivers.
--Driver versions in this package: windrvr=1301, xpc4drvr=1041
--Script name = ./install_drivers
--HostName = buster
--Current working dir = /opt/Xilinx/14.7/ISE_DS/ISE/bin/lin64/install_script/install_drivers
--Script location = /opt/Xilinx/14.7/ISE_DS/ISE/bin/lin64/install_script/install_drivers
--No script argument.
--Kernel version = 4.19.0-6-rt-amd64.
--Arch = x86_64.
--Installer version = 1100
--Unsetting ARCH environment variable.
--User has root permission.
--File /lib/modules/misc/install_windrvr6 does not exist.
--Installing USB drivers------------------------------------------
--File /etc/hotplug/usb/xusbdfwu.fw/xusbdfwu.hex does not exist.
--File version of /etc/hotplug/usb/xusbdfwu.fw/xusbdfwu.hex = 0000.
--Updating xusbdfwu.hex file.
--File /etc/hotplug/usb/xusbdfwu.fw/xusb_xlp.hex does not exist.
--File version of /etc/hotplug/usb/xusbdfwu.fw/xusb_xlp.hex = 0000.
--Updating xusb_xlp.hex file.
--File /etc/hotplug/usb/xusbdfwu.fw/xusb_emb.hex does not exist.
--File version of /etc/hotplug/usb/xusbdfwu.fw/xusb_emb.hex = 0000.
--Updating xusb_emb.hex file.
--File /etc/hotplug/usb/xusbdfwu.fw/xusb_xpr.hex does not exist.
--File version of /etc/hotplug/usb/xusbdfwu.fw/xusb_xpr.hex = 0000.
--Updating xusb_xpr.hex file.
--File /etc/hotplug/usb/xusbdfwu.fw/xusb_xup.hex does not exist.
--File version of /etc/hotplug/usb/xusbdfwu.fw/xusb_xup.hex = 0000.
--Updating xusb_xup.hex file.
--File /etc/hotplug/usb/xusbdfwu.fw/xusb_xp2.hex does not exist.
--File version of /etc/hotplug/usb/xusbdfwu.fw/xusb_xp2.hex = 0000.
--Updating xusb_xp2.hex file.
--File /etc/hotplug/usb/xusbdfwu.fw/xusb_xse.hex does not exist.
--File version of /etc/hotplug/usb/xusbdfwu.fw/xusb_xse.hex = 0000.
--Updating xusb_xse.hex file.
--Product ID 0007 is already in the usermap.
--Product ID 0009 is already in the usermap.
--Product ID 000d is already in the usermap.
--Product ID 000f is already in the usermap.
--Product ID 0013 is already in the usermap.
--Product ID 0015 is already in the usermap.
--Product ID 0008 is already in the usermap.
--Installing windrvr6---------------------------------------------
--Checking version.
--File /lib/modules/4.19.0-6-rt-amd64/kernel/drivers/misc/windrvr6.ko does not exist.
--File LINUX.4.19.0-6-rt-amd64.x86_64/windrvr6.ko does not exist.
--Setting source version to 1301.
--File LINUX.4.19.0-6-rt-amd64.x86_64/windrvr6.ko is newer than the destination file.
./configure: line 51: 6: Bad file descriptor
configure: error: please install the kernel source or             specify alternate location
make: *** No rule to make target 'clean'.  Stop.
make: *** No targets specified and no makefile found.  Stop.
make: *** No rule to make target 'install'.  Stop.
--make windrvr install rc= 2
--install_windrvr6 rc = 2
--Module windrvr6 is not running.
--Module xpc4drvr is not running.
--Note: By default, the file permission of /dev/windrvr6 is enabled for the root user only
  and must be changed to allow access to other users.

--real rc=2

--Driver installation failed.

--Digilent Return code = 0
--Xilinx Return code = 1
--Return code = 1