CC = arm-none-eabi-gcc
LD = arm-none-eabi-g++
CXX = arm-none-eabi-g++
OBJCOPY = arm-none-eabi-objcopy

linker_script = bootloader.ld
includes = 
sources =

CFLAGS = -march=armv6-m -g -ffunction-sections -fdata-sections -Os -Werror -Wall -flto
CXXFLAGS = $(CFLAGS) -std=c++20 -fno-exceptions -fcoroutines
CPPFLAGS = -MD -MP
LDFLAGS = -march=armv6-m \
		  -g --specs=nano.specs --specs=nosys.specs \
		  -Wl,--gc-sections -Os \
		  -Wl,--print-memory-usage -flto

sources += hal/lib/common/xil_assert.c
includes += -Ihal/lib/common

sources += hal/uart/xuartlite.c hal/uart/xuartlite_stats.c
includes += -Ihal/uart

bootloader_objects = uart.o bootloader.o vector_table.o $(sources:.c=.o)
app_objects = app_init.o main.o

CPPFLAGS += $(includes)

all: bootloader.elf app.bin

%.bin: %.elf
	$(OBJCOPY) -O binary $< $@

bootloader.elf: $(bootloader_objects) bootloader.ld
	$(LD) -Wl,-Tbootloader.ld $(LDFLAGS) -o $@ $(bootloader_objects)

app.elf: $(app_objects) app.ld
	$(LD) -Wl,-Tapp.ld $(LDFLAGS) -o $@ $(app_objects)

%.elf:
	$(LD) -Wl,-Tapp.ld $(LDFLAGS) -o $@ $^

.PHONY: clean

clean:
	rm -rf *.elf *.bin $(app_objects) $(bootloader_objects)