FLAGS = -c -ggdb -Os
CPU  ?= -march=rv32imac -mabi=ilp32
CROSS = riscv64-unknown-elf-
FLAGS+= $(CPU)
FLAGS+= -ffunction-sections -fdata-sections
FLAGS+= -mno-save-restore -fmessage-length=0
FLAGS+= -I/usr/include/newlib -I. -I.. -I../../common -I./inc
AS    = $(CROSS)as
CC    = $(CROSS)gcc
CC   += $(FLAGS)
CXX   = $(CROSS)g++
CXX  += $(FLAGS) -fno-exceptions -fno-rtti
AR    = $(CROSS)ar
VPATH = ./src

OBJS   = cdc_class.o
OBJS  += hw_config.o usb_endp.o usb_istr.o usb_prop.o usb_pwr.o
OBJS  += usb_core.o usb_init.o usb_int.o usb_mem.o usb_regs.o usb_sil.o

DSTLIB = libusbd.a

%.o: %.S
	$(AS) $< -o $@
%.o: %.c
	$(CC) $< -o $@
%.o: %.cpp
	$(CXX) $< -o $@

$(DSTLIB): $(OBJS)
	$(AR) rcs $(DSTLIB) $(OBJS)


.PHONY: all clean

all: $(DSTLIB)

clean:
	-rm -f *.o