O meu deu erro quando executo os comando make u2 && make flash-u2
acess@acess-i3:~/frser-duino$ make u2 && make flash-u2
make clean
make[1]: Entering directory '/home/acess/frser-duino'
rm -f frser-duino.bin
rm -f frser-duino.out
rm -f frser-duino.hex
rm -f frser-duino.s
rm -f *.o
make[1]: Leaving directory '/home/acess/frser-duino'
DFLAGS= FRBAUD=115200 make all
make[1]: Entering directory '/home/acess/frser-duino'
avr-gcc -mmcu=atmega328p -DBAUD=115200 -Os -fno-inline-small-functions -fno-tree-switch-conversion -frename-registers -g -Wall -W -pipe -flto -fwhole-program -std=gnu99 -Ilibfrser -std=gnu99 -I. -o frser-duino.out main.c uart.c spihw.c libfrser/frser.c libfrser/udelay.c libfrser/spilib.c libfrser/spihw_avrspi.c
make[1]: avr-gcc: Comando não encontrado
Makefile:62: recipe for target 'frser-duino.out' failed
make[1]: *** [frser-duino.out] Error 127
make[1]: Leaving directory '/home/acess/frser-duino' Makefile:86: recipe for target 'u2' failed
make: *** [u2] Error 2
Já troquei o cabo do arduino uno , mas mesmo assim dá o mesmo erro , conectei em outra maquina e testei com Ubuntu 14,04 e 17.04
Alguem sabe o que pode estar acontecendo?