Stuck trying to use V-USB

[code]In function 'void store_char(unsigned char, ring_buffer*)':
/arduino-1.0.1/hardware/arduino/cores/arduino/HardwareSerial.cpp:82: warning: comparison between signed and unsigned integer expressions
/arduino-1.0.1/hardware/arduino/cores/arduino/HardwareSerial.cpp: In member function 'virtual size_t HardwareSerial::write(uint8_t)':
/arduino-1.0.1/hardware/arduino/cores/arduino/HardwareSerial.cpp:390: warning: comparison between signed and unsigned integer expressions
/arduino-1.0.1/hardware/tools/avr/bin/avr-g++ -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -mmcu=atmega328p -DF_CPU=16000000L -MMD -DUSB_VID=null -DUSB_PID=null -DARDUINO=101 -I/arduino-1.0.1/hardware/arduino/cores/arduino -I/arduino-1.0.1/hardware/arduino/variants/standard /arduino-1.0.1/hardware/arduino/cores/arduino/WString.cpp -o /mnt/home/TempStore/sketchbook/build/WString.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-g++ -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -mmcu=atmega328p -DF_CPU=16000000L -MMD -DUSB_VID=null -DUSB_PID=null -DARDUINO=101 -I/arduino-1.0.1/hardware/arduino/cores/arduino -I/arduino-1.0.1/hardware/arduino/variants/standard /arduino-1.0.1/hardware/arduino/cores/arduino/Tone.cpp -o /mnt/home/TempStore/sketchbook/build/Tone.cpp.o 
/arduino-1.0.1/hardware/arduino/cores/arduino/Tone.cpp:108: warning: only initialized variables can be placed into program memory area
/arduino-1.0.1/hardware/tools/avr/bin/avr-g++ -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -mmcu=atmega328p -DF_CPU=16000000L -MMD -DUSB_VID=null -DUSB_PID=null -DARDUINO=101 -I/arduino-1.0.1/hardware/arduino/cores/arduino -I/arduino-1.0.1/hardware/arduino/variants/standard /arduino-1.0.1/hardware/arduino/cores/arduino/CDC.cpp -o /mnt/home/TempStore/sketchbook/build/CDC.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-g++ -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -mmcu=atmega328p -DF_CPU=16000000L -MMD -DUSB_VID=null -DUSB_PID=null -DARDUINO=101 -I/arduino-1.0.1/hardware/arduino/cores/arduino -I/arduino-1.0.1/hardware/arduino/variants/standard /arduino-1.0.1/hardware/arduino/cores/arduino/USBCore.cpp -o /mnt/home/TempStore/sketchbook/build/USBCore.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-g++ -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -mmcu=atmega328p -DF_CPU=16000000L -MMD -DUSB_VID=null -DUSB_PID=null -DARDUINO=101 -I/arduino-1.0.1/hardware/arduino/cores/arduino -I/arduino-1.0.1/hardware/arduino/variants/standard /arduino-1.0.1/hardware/arduino/cores/arduino/WMath.cpp -o /mnt/home/TempStore/sketchbook/build/WMath.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-g++ -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -mmcu=atmega328p -DF_CPU=16000000L -MMD -DUSB_VID=null -DUSB_PID=null -DARDUINO=101 -I/arduino-1.0.1/hardware/arduino/cores/arduino -I/arduino-1.0.1/hardware/arduino/variants/standard /arduino-1.0.1/hardware/arduino/cores/arduino/IPAddress.cpp -o /mnt/home/TempStore/sketchbook/build/IPAddress.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/wiring_analog.c.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/wiring_shift.c.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/wiring.c.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/wiring_digital.c.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/wiring_pulse.c.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/WInterrupts.c.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/main.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/Print.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/HID.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/new.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/Stream.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/HardwareSerial.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/WString.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/Tone.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/CDC.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/USBCore.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/WMath.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-ar rcs /mnt/home/TempStore/sketchbook/build/core.a /mnt/home/TempStore/sketchbook/build/IPAddress.cpp.o 
/arduino-1.0.1/hardware/tools/avr/bin/avr-gcc -Os -Wl,--gc-sections -mmcu=atmega328p -o /mnt/home/TempStore/sketchbook/build/VUSBExample1.cpp.elf /mnt/home/TempStore/sketchbook/build/VUSBExample1.cpp.o /mnt/home/TempStore/sketchbook/build/usbdrv/usbdrvasm.S.o /mnt/home/TempStore/sketchbook/build/usbdrv/usbdrv.c.o /mnt/home/TempStore/sketchbook/build/usbdrv/oddebug.c.o /mnt/home/TempStore/sketchbook/build/core.a -L/mnt/home/TempStore/sketchbook/build -lm 
VUSBExample1.cpp.o: In function `main':
VUSBExample1.cpp:22: undefined reference to `usbInit()'
VUSBExample1.cpp:35: undefined reference to `usbPoll()'

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