KSRC  := /lib/modules/$(shell uname -r)/build

SRC_DIR=$(shell pwd)

all: prereq_check kernel-module

# test user programs
UEXE := netlink-cs netlink-p2p netlink-u2k

test: $(UEXE)

netlink-cs: netlink-u2u.c
	gcc -g -O2 -o $@ $^
netlink-p2p: netlink-u2u.c
	gcc -g -O2 -DPEER_TO_PEER -o $@ $^
netlink-u2k: netlink-u2k.c
	gcc -g -O2 -o $@ $^

SRCS := knetlink.c
OBJS := knetlink.o

prereq_check:
	@ if [ ! -f $(KSRC)/include/linux/version.h ]; then \
		echo "Kernel sources not been found. Aborting."; \
		exit 1;\
	  fi

MODULE := knetlink.ko
obj-m := knetlink.o
knetlink-objs := 

kernel-module:
	$(MAKE) -C $(KSRC) SUBDIRS=$(SRC_DIR) modules

clean:
	rm -f *.o *.ko .*.ko.cmd .*.o.cmd *.mod.[oc] *~ 
	rm -rf .tmp_versions
	rm -f $(UEXE)