I have been trying to compile a robot simulation.
I created an empty file called test.c and tried to compile a test using:
avr-gcc -mmcu=atmega328p test.c
AVR-GCC it's installed
copt@copt:~$ avr-gcc --version
avr-gcc (GCC) 5.4.0
Copyright (C) 2015 Free Software Foundation, Inc.
Este é um software livre; veja as fontes para as condições de cópia. NÃO HÁ
garantias; nem mesmo de COMERCIALIZAÇÃO ou ADEQUAÇÃO A UMA FINALIDADE
ESPECÍFICA.
and returned this:
/usr/lib/gcc/avr/5.4.0/../../../avr/lib/avr5/crtatmega328p.o:
(.init9+0x0): reference not defined to "main"
collect2: erro: ld returned 1 exit status
Very similar to the principal one that I've been trying to make work. I think if solve this very basic problem, the biggest one will be solved.
FLAGS = -mmcu=atmega328p -Wall -gdwarf-2 -O3 -funsigned-char -funsigned- bitfields -fpack-struct -fshort-enums
It should be compiling normally.