Error when verifying Mirumod rx2atp.c scetch file code

HELP ME WORLD !!!

I cannot compile AR drone 2.0 Mirumod scetch file rx2atp.c !!!

Сonstantly mistake. Why ??? What I 'm doing wrong ???

http://mirumod.net/sw/drs023.php

Arduino: 1.8.11 Hourly Build 2019/10/22 10:16 (Windows 7), Board: "Arduino Nano, ATmega328P"

C:\Ardrone\MIRU\arduino-nightly\arduino-builder -dump-prefs -logger=machine -hardware C:\Ardrone\MIRU\arduino-nightly\hardware -tools C:\Ardrone\MIRU\arduino-nightly\tools-builder -tools C:\Ardrone\MIRU\arduino-nightly\hardware\tools\avr -built-in-libraries C:\Ardrone\MIRU\arduino-nightly\libraries -libraries C:\Users\VAIO\Documents\Arduino\libraries -fqbn=arduino:avr:nano:cpu=atmega328 -vid-pid=1A86_7523 -ide-version=10811 -build-path C:\Users\VAIO\AppData\Local\Temp\arduino_build_746422 -warnings=default -build-cache

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"C:\Ardrone\MIRU\arduino-nightly\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\VAIO\AppData\Local\Temp\arduino_build_746422\core\core.a" "C:\Users\VAIO\AppData\Local\Temp\arduino_build_746422\core\new.cpp.o"
Archiving built core (caching) in: C:\Users\VAIO\AppData\Local\Temp\arduino_cache_697391\core\core_arduino_avr_nano_cpu_atmega328_b1c11db6e66c73b59c884a050ddab7d9.a
Linking everything together...
"C:\Ardrone\MIRU\arduino-nightly\hardware\tools\avr/bin/avr-gcc" -Os -g -flto -fuse-linker-plugin -Wl,--gc-sections -mmcu=atmega328p -o "C:\Users\VAIO\AppData\Local\Temp\arduino_build_746422/sketch_oct28a.ino.elf" "C:\Users\VAIO\AppData\Local\Temp\arduino_build_746422\sketch\rx2atp.c.o" "C:\Users\VAIO\AppData\Local\Temp\arduino_build_746422\sketch\sketch_oct28a.ino.cpp.o" "C:\Users\VAIO\AppData\Local\Temp\arduino_build_746422/core\core.a" "-LC:\Users\VAIO\AppData\Local\Temp\arduino_build_746422" -lm
C:\Users\VAIO\AppData\Local\Temp\ccaNpp71.ltrans0.ltrans.o: In function `tic':

C:\Users\VAIO\AppData\Local\Temp\arduino_build_746422\sketch/rx2atp.c:731: undefined reference to `itic'

C:\Users\VAIO\AppData\Local\Temp\ccaNpp71.ltrans0.ltrans.o: In function `__vector_5':

C:\Users\VAIO\AppData\Local\Temp\arduino_build_746422\sketch/rx2atp.c:1201: undefined reference to `itic'

C:\Users\VAIO\AppData\Local\Temp\ccaNpp71.ltrans0.ltrans.o: In function `__vector_4':

C:\Users\VAIO\AppData\Local\Temp\arduino_build_746422\sketch/rx2atp.c:1020: undefined reference to `itic'

collect2.exe: error: ld returned 1 exit status

exit status 1
Error compiling for board Arduino Nano.

I solved the problem !
Used the old arduino 1.6.6. Everything is compiled.
In the latter arduino 1.8 does not work.
For upload specify uno instead of nano !
Correct the program !