/usr/bin/avr-ld: skipping incompatible /usr/lib/gcc/avr/4.9.0/avr5/libgcc.a when searching for -lgcc
/usr/bin/avr-ld: skipping incompatible /usr/lib/gcc/avr/4.9.0/libgcc.a when searching for -lgcc
/usr/bin/avr-ld: cannot find -lgcc
collect2: error: ld returned 1 exit status
.build/uno/Makefile:436: recipe for target '.build/uno/firmware.elf' failed
make: *** [.build/uno/firmware.elf] Error 1
Make failed with code 2