/media/sandbox/xtools/avr-dev/build/avr/bin/avr-gcc -g -Wall -O2 -mmcu=attiny15    -c -o main.o main.c
main.c:0: error: MCU `attiny15' supported for assembler only
In file included from /media/sandbox/xtools/avr-dev/build/avr/lib/gcc/avr/3.4.4/../../../../avr/include/avr/io.h:299,
                 from main.c:25:
/media/sandbox/xtools/avr-dev/build/avr/lib/gcc/avr/3.4.4/../../../../avr/include/avr/iotn15.h:51:4: warning: #warning "MCU not supported by the C compiler"
main.c:36: warning: return type of 'main' is not `int'
make: *** [main.o] Error 1