webusb example doesn't build

I'm running Windows 11, VSCode nRF Connect plugin, WSL, using NCS v2, with an board of nrf52_adafruit_feather, and the application won't build.

Executing task: nRF Connect: Generate config nrf52_adafruit_feather for /home/doug/git/webusb 

Building webusb
west build --build-dir /home/doug/git/webusb/build /home/doug/git/webusb --pristine --board nrf52_adafruit_feather -- -DNCS_TOOLCHAIN_VERSION:STRING="NONE" -DCONFIG_DEBUG_OPTIMIZATIONS=y -DCONFIG_DEBUG_THREAD_INFO=y

-- west build: generating a build system
Loading Zephyr default modules (Zephyr base).
-- Application: /home/doug/git/webusb
-- Found Python3: /home/doug/ncs/toolchains/v2.0.0/usr/local/bin/python3.8 (found suitable exact version "3.8.2") found components: Interpreter 
-- Cache files will be written to: /home/doug/.cache/zephyr
-- Zephyr version: 3.0.99 (/home/doug/ncs/v2.0.0/zephyr)
-- Found west (found suitable version "0.13.1", minimum required is "0.7.1")
-- Board: nrf52_adafruit_feather
-- Found host-tools: zephyr 0.14.1 (/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk)
-- Found dtc: /home/doug/ncs/toolchains/v2.0.0/usr/bin/dtc (found suitable version "1.4.7", minimum required is "1.4.6")
-- Found toolchain: zephyr 0.14.1 (/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk)
-- Found BOARD.dts: /home/doug/ncs/v2.0.0/zephyr/boards/arm/nrf52_adafruit_feather/nrf52_adafruit_feather.dts
-- Generated zephyr.dts: /home/doug/git/webusb/build/zephyr/zephyr.dts
-- Generated devicetree_unfixed.h: /home/doug/git/webusb/build/zephyr/include/generated/devicetree_unfixed.h
-- Generated device_extern.h: /home/doug/git/webusb/build/zephyr/include/generated/device_extern.h
-- Including generated dts.cmake file: /home/doug/git/webusb/build/zephyr/dts.cmake
Parsing /home/doug/git/webusb/Kconfig
Loaded configuration '/home/doug/ncs/v2.0.0/zephyr/boards/arm/nrf52_adafruit_feather/nrf52_adafruit_feather_defconfig'
Merged configuration '/home/doug/git/webusb/prj.conf'
Merged configuration '/home/doug/git/webusb/build/zephyr/misc/generated/extra_kconfig_options.conf'
Configuration saved to '/home/doug/git/webusb/build/zephyr/.config'
Kconfig header saved to '/home/doug/git/webusb/build/zephyr/include/generated/autoconf.h'
-- The C compiler identification is GNU 10.3.0
-- The CXX compiler identification is GNU 10.3.0
-- The ASM compiler identification is GNU
-- Found assembler: /home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc
CMake Warning at /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/CMakeLists.txt:22 (message):
  CONFIG_USB_DEVICE_VID has default value 0x2FE3.

  This value is only for testing and MUST be configured for USB products.


CMake Warning at /home/doug/ncs/v2.0.0/zephyr/CMakeLists.txt:814 (message):
  No SOURCES given to Zephyr library: drivers__usb__device

  Excluding target from build.


-- Configuring done
-- Generating done
-- Build files have been written to: /home/doug/git/webusb/build
-- west build: building application
[1/179] Preparing syscall dependency handling

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[169/179] Linking C executable zephyr/zephyr_pre0.elf
FAILED: zephyr/zephyr_pre0.elf zephyr/zephyr_pre0.map 
: && ccache /home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc   zephyr/CMakeFiles/zephyr_pre0.dir/misc/empty_file.c.obj -o zephyr/zephyr_pre0.elf  -fuse-ld=bfd  -Wl,-T  zephyr/linker_zephyr_pre0.cmd  -Wl,-Map=/home/doug/git/webusb/build/zephyr/zephyr_pre0.map  -Wl,--whole-archive  app/libapp.a  zephyr/libzephyr.a  zephyr/arch/common/libarch__common.a  zephyr/arch/arch/arm/core/aarch32/libarch__arm__core__aarch32.a  zephyr/arch/arch/arm/core/aarch32/cortex_m/libarch__arm__core__aarch32__cortex_m.a  zephyr/arch/arch/arm/core/aarch32/mpu/libarch__arm__core__aarch32__mpu.a  zephyr/lib/libc/minimal/liblib__libc__minimal.a  zephyr/lib/posix/liblib__posix.a  zephyr/soc/arm/common/cortex_m/libsoc__arm__common__cortex_m.a  zephyr/soc/arm/nordic_nrf/nrf52/libsoc__arm__nordic_nrf__nrf52.a  zephyr/drivers/clock_control/libdrivers__clock_control.a  zephyr/drivers/console/libdrivers__console.a  zephyr/drivers/gpio/libdrivers__gpio.a  zephyr/drivers/hwinfo/libdrivers__hwinfo.a  zephyr/drivers/serial/libdrivers__serial.a  zephyr/drivers/timer/libdrivers__timer.a  zephyr/drivers/pinctrl/libdrivers__pinctrl.a  modules/nrf/lib/fatal_error/lib..__nrf__lib__fatal_error.a  modules/hal_nordic/nrfx/libmodules__hal_nordic__nrfx.a  -Wl,--no-whole-archive  zephyr/kernel/libkernel.a  zephyr/CMakeFiles/offsets.dir/./arch/arm/core/offsets/offsets.c.obj  -L"/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/thumb/v7e-m/nofp"  -L/home/doug/git/webusb/build/zephyr  -lgcc  zephyr/arch/common/libisr_tables.a  -no-pie  -mcpu=cortex-m4  -mthumb  -mabi=aapcs  -mfp16-format=ieee  -Wl,--gc-sections  -Wl,--build-id=none  -Wl,--sort-common=descending  -Wl,--sort-section=alignment  -Wl,-u,_OffsetAbsSyms  -Wl,-u,_ConfigAbsSyms  -nostdlib  -static  -Wl,-X  -Wl,-N  -Wl,--orphan-handling=warn && cd /home/doug/git/webusb/build/zephyr && /home/doug/ncs/toolchains/v2.0.0/usr/local/lib/python3.8/site-packages/cmake/data/bin/cmake -E echo
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_device.c.obj): in function `usb_halt_endpoint_req':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:1016: undefined reference to `usb_dc_ep_set_stall'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:1022: undefined reference to `usb_dc_ep_clear_stall'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_device.c.obj): in function `set_endpoint':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:533: undefined reference to `usb_dc_ep_configure'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:543: undefined reference to `usb_dc_ep_enable'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_device.c.obj): in function `usb_handle_std_device_req':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:819: undefined reference to `usb_dc_set_address'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_device.c.obj): in function `reset_endpoint':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:581: undefined reference to `usb_dc_ep_disable'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_device.c.obj): in function `disable_interface_ep':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:1178: undefined reference to `usb_dc_ep_disable'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_device.c.obj): in function `usb_get_status_endpoint':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:987: undefined reference to `usb_dc_ep_is_stalled'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_device.c.obj): in function `composite_setup_ep_cb':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:1489: undefined reference to `usb_dc_ep_set_callback'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_device.c.obj): in function `usb_write':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:1318: undefined reference to `usb_dc_ep_write'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_device.c.obj): in function `usb_data_to_host':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:266: undefined reference to `usb_dc_ep_write'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_device.c.obj): in function `usb_handle_control_transfer':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:356: undefined reference to `usb_dc_ep_read'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:290: undefined reference to `usb_dc_ep_read'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:293: undefined reference to `usb_dc_ep_set_stall'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:317: undefined reference to `usb_dc_ep_set_stall'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:318: undefined reference to `usb_dc_ep_set_stall'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:335: undefined reference to `usb_dc_ep_set_stall'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:348: undefined reference to `usb_dc_ep_read'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:351: undefined reference to `usb_dc_ep_set_stall'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:360: undefined reference to `usb_dc_ep_set_stall'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:361: undefined reference to `usb_dc_ep_set_stall'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:374: undefined reference to `usb_dc_ep_set_stall'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_device.c.obj): in function `usb_enable':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:1545: undefined reference to `usb_dc_set_status_callback'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:1547: undefined reference to `usb_dc_attach'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:1562: undefined reference to `usb_dc_ep_configure'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:1568: undefined reference to `usb_dc_ep_configure'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:1574: undefined reference to `usb_dc_ep_set_callback'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:1580: undefined reference to `usb_dc_ep_set_callback'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:1593: undefined reference to `usb_dc_ep_enable'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_device.c:1598: undefined reference to `usb_dc_ep_enable'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_descriptor.c.obj): in function `usb_validate_ep_cfg_data':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_descriptor.c:261: undefined reference to `usb_dc_ep_check_cap'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_transfer.c.obj): in function `usb_transfer_work':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_transfer.c:111: undefined reference to `usb_dc_ep_read_wait'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_transfer.c:125: undefined reference to `usb_dc_ep_mps'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_transfer.c:132: undefined reference to `usb_dc_ep_read_continue'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_transfer.c.obj): in function `usb_transfer_ep_callback':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_transfer.c:180: undefined reference to `usb_dc_ep_read_wait'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/libzephyr.a(usb_transfer.c.obj): in function `usb_transfer':
/home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_transfer.c:244: undefined reference to `usb_dc_ep_mps'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_transfer.c:244: undefined reference to `usb_dc_ep_mps'
/home/doug/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: /home/doug/ncs/v2.0.0/zephyr/subsys/usb/device/usb_transfer.c:254: undefined reference to `usb_dc_ep_read_continue'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: /home/doug/ncs/toolchains/v2.0.0/usr/local/bin/cmake --build /home/doug/git/webusb/build

Any thoughts on what I need to do to get this to work?

Thanks.

Doug

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