PROJECT=main

# main program + cpu startup code
OBJS = $(PROJECT).o startup.o syscalls.o

# CANBUS support
OBJS += can.o

CFLAGS = -Wall -fno-common -O2 -mthumb -mcpu=cortex-m4 -I./USB -I.
ASFLAGS = -mcpu=cortex-m4
LDFLAGS  = -lm -mcpu=cortex-m4 -mthumb -nostartfiles -TMK20D7.ld

CC = arm-none-eabi-gcc
AS = arm-none-eabi-as
STRIP = arm-none-eabi-strip
OBJCOPY = arm-none-eabi-objcopy

all:: $(PROJECT).hex

run: $(PROJECT).hex
    teensy_post_compile -file=$(PROJECT) -path=. -tools=\utils -board=TEENSY31 -reboot

$(PROJECT).hex: $(PROJECT).elf
    $(STRIP) $(PROJECT).elf
    $(OBJCOPY) -R .stack -O ihex $(PROJECT).elf $(PROJECT).hex

$(PROJECT).elf: $(OBJS)
    $(CC) $(OBJS) $(LDFLAGS) -o $(PROJECT).elf

clean:
    rm -f $(OBJS) $(PROJECT).hex $(PROJECT).elf

.c.o :
    $(CC) $(CFLAGS) -c $< -o $@

.cpp.o :
    $(CC) $(CFLAGS) -c $< -o $@

.s.o :
    $(AS) $(ASFLAGS) -o $@ $<