Something

ifneq ($(KERNELRELEASE),)
obj-m := ipt_ipp2p.o

else

KERNEL_SERIES = $(shell uname -r | cut -d. -f1-2)

ifeq ($(KERNEL_SERIES), 2.6)
	TARGET=ipt_ipp2p.ko
else
	TARGET=ipt_ipp2p.o
endif

SED = sed
IPTABLES = /sbin/iptables
IPTABLES_VERSION = \
	$(shell iptables --version | sed -e 's/^iptables v//')
IPTABLES_OPTION = -DIPTABLES_VERSION=\"$(IPTABLES_VERSION)\"


KERNEL_SRC = /lib/modules/$(shell uname -r)/build
IUSER = -I/var/abs/system/iptables/src/iptables-1.3.1/include
CC = gcc
CFLAGS = -O3 -Wall



all: modules libipt_ipp2p.so

modules: $(TARGET)

ipt_ipp2p.o: ipt_ipp2p.h ipt_ipp2p.c
	$(CC) $(CFLAGS) -I$(KERNEL_SRC)/include -c ipt_ipp2p.c -D__KERNEL__ -DMODULE $(MODVERSIONS)

ipt_ipp2p.ko:
	$(MAKE) -C $(KERNEL_SRC) SUBDIRS=$(PWD) modules


libipt_ipp2p.so:   libipt_ipp2p.c ipt_ipp2p.h
		$(CC) $(CFLAGS) $(IPTABLES_OPTION) $(IUSER) -fPIC -c libipt_ipp2p.c
		ld -shared -o libipt_ipp2p.so libipt_ipp2p.o

clean:
		-rm -f *.o *.so *.ko .*.cmd *.mod.c
endif