/mnt/hdc1/gary/projects/avr-toolchain/avr1/bin/avr-gcc -g -Wall -O2 -mmcu=attiny28  -Wa,-gstabs   -c -o main.o main.c
main.c:1: error: MCU 'attiny28' supported for assembler only
In file included from /mnt/hdc1/gary/projects/avr-toolchain/avr1/bin/../lib/gcc/avr/4.2.0/../../../../avr/include/avr/io.h:276,
                 from main.c:25:
/mnt/hdc1/gary/projects/avr-toolchain/avr1/bin/../lib/gcc/avr/4.2.0/../../../../avr/include/avr/iotn28.h:51:4: warning: #warning "MCU not supported by the C compiler"
main.c:36: warning: return type of 'main' is not 'int'
main.c: In function 'main':
main.c:44: error: 'DDRB' undeclared (first use in this function)
main.c:44: error: (Each undeclared identifier is reported only once
main.c:44: error: for each function it appears in.)
main.c:46: error: 'PORTB' undeclared (first use in this function)
make: *** [main.o] Error 1