KVER = $(shell uname -r)
KMAJ = $(shell echo $(KVER) | \
sed -e 's/^\([0-9][0-9]*\)\.[0-9][0-9]*\.[0-9][0-9]*.*/\1/')
KMIN = $(shell echo $(KVER) | \
sed -e 's/^[0-9][0-9]*\.\([0-9][0-9]*\)\.[0-9][0-9]*.*/\1/')
KREV = $(shell echo $(KVER) | \
sed -e 's/^[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*/\1/')

all:
	$(info Check kernel version $(KMAJ).$(KMIN).)
ifeq ($(KMAJ), 4)
ifeq ($(KMIN), 9)
	cd 4.9 && $(MAKE) && cp pl2303.ko ../
else
	cd 4.19 && $(MAKE) && cp pl2303.ko ../
endif
else
	@echo "Only 4.x kernel support"
	exit 1
endif
