O=0
CC=gcc-4.6
OBJCOPY=objcopy
LDS=vm64K.lds

# set optimization level
CFLAGS := -O${O}
# i386-gcc pass -g so we do too ;-)
#CFLAGS := -g
# set lang standard to c99
CFLAGS += -std=c99
# turn on all warnings
CFLAGS += -Wall
# force 32 bit code and address generation
CFLAGS += -m32 
# strip extraneous info from binary explicity ensure no comment section is 
# generated
#CFLAGS += -s
# ensure no startup files are included
CFLAGS += -nostartfiles 
# avoid generating exception frame (.eh_frame) support
CFLAGS += -fno-asynchronous-unwind-tables
# use a freestanding environment eg no standard libs no start (may want to remove this)
CFLAGS += -ffreestanding 
# ensure that we only statically link things
CFLAGS += --static
# use custom vm linker script
CFLAGS +=  -T ${LDS}
# remove identity generation from the binary
CFLAGS += -Wl,--build-id=none

CFLAGS += -Wl,-M

.PHONY: all

all: initialrawsv.bin

foo.o: foo.c
	$(CC) $(CFLAGS) -c foo.c

main.o: main.c
	$(CC) $(CFLAGS) -c main.c

initialrawsv.elf: ${LDS} crt0.S  main.o foo.o
	$(CC) ${CFLAGS} -o initialrawsv.elf crt0.S main.o foo.o > initialrawsv.map

initialrawsv.bin: initialrawsv.elf
	$(OBJCOPY) -S initialrawsv.elf --output-target=binary initialrawsv.bin

clean:
	rm *.elf *.o *.bin *.map