Errors due to USB_HAVE_UGEN option

[Deval Shah]

Hello everyone,
I am trying to add USB mouse to Raspberry Pi, therefore adding related files.
There are some functions which are used by “/dev/usb/input/ums.c” but are not
being compiled due to the switch/macro USB_HAVE_UGEN in the file
rtems-libbsd/rtemsbsd/include/rtems/bsd/local/opt_usb.h.
Error log: 
----------------------------------------------------------------------------------------------------------------------------
./libbsd.a(ums.c.16.o): In function `ums_detach': 
/home/gadgetman/development/rtems/rtems-libbsd/build/arm-rtems4.12-raspberrypi/../../freebsd/sys/dev/usb/input/ums.c:683:
undefined reference to `usb_fifo_detach' ./libbsd.a(ums.c.16.o): In function `ums_stop_read': 
/home/gadgetman/development/rtems/rtems-libbsd/build/arm-rtems4.12-raspberrypi/../../freebsd/sys/dev/usb/input/ums.c:722:
undefined reference to `usb_fifo_softc' ./libbsd.a(ums.c.16.o): In function `ums_start_read': 
/home/gadgetman/development/rtems/rtems-libbsd/build/arm-rtems4.12-raspberrypi/../../freebsd/sys/dev/usb/input/ums.c:697:
undefined reference to `usb_fifo_softc' ./libbsd.a(ums.c.16.o): In function `ums_ioctl': 
/home/gadgetman/development/rtems/rtems-libbsd/build/arm-rtems4.12-raspberrypi/../../freebsd/sys/dev/usb/input/ums.c:860:
undefined reference to `usb_fifo_softc' ./libbsd.a(ums.c.16.o): In function `ums_reset_buf': 
/home/gadgetman/development/rtems/rtems-libbsd/build/arm-rtems4.12-raspberrypi/../../freebsd/sys/dev/usb/input/ums.c:783:
undefined reference to `usb_fifo_reset' ./libbsd.a(ums.c.16.o): In function `ums_close': 
/home/gadgetman/development/rtems/rtems-libbsd/build/arm-rtems4.12-raspberrypi/../../freebsd/sys/dev/usb/input/ums.c:847:
undefined reference to `usb_fifo_softc' 
/home/gadgetman/development/rtems/rtems-libbsd/build/arm-rtems4.12-raspberrypi/../../freebsd/sys/dev/usb/input/ums.c:852:
undefined reference to `usb_fifo_free_buffer' ./libbsd.a(ums.c.16.o): In function `ums_open': 
/home/gadgetman/development/rtems/rtems-libbsd/build/arm-rtems4.12-raspberrypi/../../freebsd/sys/dev/usb/input/ums.c:789:
undefined reference to `usb_fifo_softc' 
/home/gadgetman/development/rtems/rtems-libbsd/build/arm-rtems4.12-raspberrypi/../../freebsd/sys/dev/usb/input/ums.c:834:
undefined reference to `usb_fifo_alloc_buffer' ./libbsd.a(ums.c.16.o): In function `ums_attach': 
/home/gadgetman/development/rtems/rtems-libbsd/build/arm-rtems4.12-raspberrypi/../../freebsd/sys/dev/usb/input/ums.c:653:
undefined reference to `usb_fifo_attach' ./libbsd.a(ums.c.16.o): In function `ums_put_queue': 
/home/gadgetman/development/rtems/rtems-libbsd/build/arm-rtems4.12-raspberrypi/../../freebsd/sys/dev/usb/input/ums.c:771:
undefined reference to `usb_fifo_put_data_linear' ./libbsd.a(ums.c.16.o): In function `ums_intr_callback': 
/home/gadgetman/development/rtems/rtems-libbsd/build/arm-rtems4.12-raspberrypi/../../freebsd/sys/dev/usb/input/ums.c:332:
undefined reference to `usb_fifo_put_bytes_max' collect2: error: ld returned 1 exit status 
---------------------------------------------------------------------------------------------------------------------------- So, what would be the way out here ? Is there any particular reason why “UGEN”
option is not used in our system ?
Thank you in advance.
Deval Shah
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