Hi all,
i am making a line follower . using atmel avr atmega16
programming by avr isp programmer
using avr studio
have installed avrlib, winavr (latest)
but while compiling my program i am getting following error
(i have used #include "a2d.h" in the progam)

../LINE_FOLLOWER.c:50: undefined reference to `a2dInit'
../LINE_FOLLOWER.c:51: undefined reference to `a2dSetPrescaler'
../LINE_FOLLOWER.c:52: undefined reference to `a2dSetReference'
../LINE_FOLLOWER.c:69: undefined reference to `a2dConvert8bit'
../LINE_FOLLOWER.c:70: undefined reference to `a2dConvert8bit'
make: *** [LINE_FOLLOWER.elf] Error 1


when i opened avrlib there were both an a2d.h as well as a2d.c in it
but the same are not present in C:/winavr/avr/include/avr
so cannot successfully compile
other included files working all right like #include<avr/io.h>
PLEASE HELP