RISCV_TOOLCHAIN_PATH ?= ~/dev/riscv-gnu-toolchain/drops
VORTEX_RT_PATH ?= $(wildcard ../..)

CC = $(RISCV_TOOLCHAIN_PATH)/bin/riscv32-unknown-elf-gcc
AR = $(RISCV_TOOLCHAIN_PATH)/bin/riscv32-unknown-elf-gcc-ar
DP = $(RISCV_TOOLCHAIN_PATH)/bin/riscv32-unknown-elf-objdump
CP = $(RISCV_TOOLCHAIN_PATH)/bin/riscv32-unknown-elf-objcopy

CFLAGS += -march=rv32im -mabi=ilp32 -O3 -Wl,-Bstatic,-T,$(VORTEX_RT_PATH)/linker/vx_link.ld
CFLAGS += -nostartfiles -ffreestanding -fno-exceptions -Wl,--gc-sections 
CFLAGS += -I$(VORTEX_RT_PATH)/include

LDFLAGS += $(VORTEX_RT_PATH)/libvortexrt.a

PROJECT = vx_simple

SRCS = main.c tests.c

all: $(PROJECT).elf $(PROJECT).hex $(PROJECT).dump

$(PROJECT).dump: $(PROJECT).elf
	$(DP) -D $(PROJECT).elf > $(PROJECT).dump

$(PROJECT).hex: $(PROJECT).elf
	$(CP) -O ihex $(PROJECT).elf $(PROJECT).hex

$(PROJECT).elf: $(SRCS)
	$(CC) $(CFLAGS) $(SRCS) $(LDFLAGS) -o $(PROJECT).elf

.depend: $(SRCS)
	$(CC) $(CFLAGS) -MM $^ > .depend;

clean:
	rm -rf *.elf *.hex *.dump .depend