# $Id: Makefile,v 1.1 2010/10/19 05:18:47 bsd Exp $

TARGET = xram

OBJS = main.o

SRCS = main.c

CPU = atmega128


# the following lets the linker know where we want the data area and
# heap; the stack remains in its default location which is the top of
# internal SRAM (for speed)

EXTERNAL_RAM = -Wl,-Tdata=0x801100,--defsym=__heap_end=0x80ffff


OPTIMIZE = -O
CEXTRA   = -Wa,-adhlns=$(<:.c=.lst)
CFLAGS   = -g -mmcu=${CPU} -Wall ${OPTIMIZE} ${CEXTRA}
LDFLAGS  = -mmcu=${CPU} ${EXTERNAL_RAM} -Wl,-u,vfprintf -lprintf_flt -lm

CC     = avr-gcc

all : ${TARGET}.hex

${TARGET} : ${OBJS}
	avr-gcc ${LDFLAGS} -o ${TARGET} ${OBJS} ${LIBDIRS} ${LIBS}

${TARGET}.hex : ${TARGET}
	avr-objcopy -O ihex ${TARGET} ${TARGET}.hex

.c.s :
	avr-gcc -c ${CFLAGS} -S -o $@ $<

clean :
	rm -f *.srec *.lst *.o *.bin *~ .depend ${TARGET}