ifneq (${KERNELRELEASE},)

# KERNELRELEASE defined: we are being compiled as part of the Kernel
        obj-m := vga_led.o

else

# We are being compiled as a module: use the Kernel build system

	KERNEL_SOURCE := /usr/src/linux
        PWD := $(shell pwd)

default: module hello

module:
	${MAKE} -C ${KERNEL_SOURCE} SUBDIRS=${PWD} modules

clean:
	${MAKE} -C ${KERNEL_SOURCE} SUBDIRS=${PWD} clean
	${RM} hello
	${RM} main


usbkeyboard.o : usbkeyboard.c usbkeyboard.h

main: hello.c vga_led.h usbkeyboard.h
	gcc hello.c vga_led.h usbkeyboard.c usbkeyboard.h -lusb-1.0 -pthread -o main

socfpga.dtb : socfpga.dtb
	dtc -O dtb -o socfpga.dtb socfpga.dts

endif 
