hello while i compile the source code, the following output appear.
avr-gcc -c -mmcu=at90s8515 -I. -g -Os -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Wstrict-prototypes -Wa,-adhlns=main.lst -std=gnu99 main.c -o main.o
main.c:12: warning: return type of `main' is not `int'
make: *** No rule to make target `1.o', needed by `main.elf'. Stop.
May i know the solution and ideas for the warning and the 'No rule to make target '1.o', needed by main.elf'.stop
thanks for your help.. :)