ifeq ($(obj),)
obj = .
endif

#################################################
# default compilation rule

default:: Makefile.media links .version
	$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) $(MYCFLAGS) modules

#################################################
# Object specific rules

-include $(obj)/.myconfig
-include $(obj)/Makefile.media

#################################################
# CFLAGS configuration

# for DVB
EXTRA_CFLAGS += -DDVB_CVS=1
EXTRA_CFLAGS += -I$(srctree)/drivers/media/dvb/dvb-core/
EXTRA_CFLAGS += -I$(srctree)/drivers/media/dvb/frontends/

ifeq ($(CONFIG_VIDEO_ADV_DEBUG),y)
 EXTRA_CFLAGS += -DCONFIG_VIDEO_ADV_DEBUG=1
endif

ifeq ($(CONFIG_XC3028),m)
 EXTRA_CFLAGS += -DCONFIG_XC3028=1
endif

ifeq ($(CONFIG_DVB_FIRESAT),m)
  EXTRA_CFLAGS += -I$(srctree)/drivers/ieee1394/
endif

ifeq ($(CONFIG_VIDEO_CX88_DVB),m)
 EXTRA_CFLAGS += -DCONFIG_VIDEO_CX88_DVB_MODULE=1
 EXTRA_CFLAGS += -DHAVE_CX22702=1
 EXTRA_CFLAGS += -DHAVE_OR51132=1
 EXTRA_CFLAGS += -DHAVE_LGDT330X=1
 EXTRA_CFLAGS += -DHAVE_MT352=1
 EXTRA_CFLAGS += -DHAVE_ZL10353=1
 EXTRA_CFLAGS += -DHAVE_NXT200X=1
 EXTRA_CFLAGS += -DHAVE_CX24123=1
 EXTRA_CFLAGS += -DHAVE_VP3054_I2C=1
endif

ifeq ($(CONFIG_VIDEO_SAA7134_DVB),m)
 EXTRA_CFLAGS += -DHAVE_MT352=1
 EXTRA_CFLAGS += -DHAVE_TDA1004X=1
 EXTRA_CFLAGS += -DHAVE_NXT200X=1
endif

ifeq ($(CONFIG_VIDEO_BUF_DVB),m)
 EXTRA_CFLAGS += -DHAVE_VIDEO_BUF_DVB=1
endif

ifeq ($(CONFIG_DVB_AV7110_OSD),y)
 EXTRA_CFLAGS += -DCONFIG_DVB_AV7110_OSD=1
endif

ifeq ($(CONFIG_DVB_AV7110_FIRMWARE),y)
  EXTRA_CFLAGS += -DCONFIG_DVB_AV7110_FIRMWARE_FILE
endif

# for pvrusb2
ifeq ($(CONFIG_VIDEO_PVRUSB2_SYSFS),y)
 EXTRA_CFLAGS += -DCONFIG_VIDEO_PVRUSB2_SYSFS
endif
ifeq ($(CONFIG_VIDEO_PVRUSB2_DEBUGIFC),y)
 EXTRA_CFLAGS += -DCONFIG_VIDEO_PVRUSB2_DEBUGIFC
endif
ifeq ($(CONFIG_VIDEO_PVRUSB2_24XXX),y)
 EXTRA_CFLAGS += -DCONFIG_VIDEO_PVRUSB2_24XXX
endif

EXTRA_CFLAGS += -g

EXTRA_CFLAGS += $(if $(wildcard $(srctree)/.mm), -DMM_KERNEL)

#################################################
# Kernel 2.4/2.6 specific rules

ifneq ($(KERNELRELEASE),)
ifeq ($(VERSION).$(PATCHLEVEL),2.6)
 export-objs	:=
 list-multi	:=
else
 multi-m	:= $(filter $(list-multi), $(obj-m))
 int-m		:= $(sort $(foreach m, $(multi-m), $($(basename $(m))-objs)))
 export-objs	:= $(filter $(int-m) $(obj-m),$(export-objs))
endif

include $(obj)/Makefile.kern24
-include $(TOPDIR)/Rules.make
else
# take version info from last module build if available
-include $(obj)/.version
endif

#################################################
# Directories to be used

snapshot := $(wildcard $(obj)/.snapshot)
ifneq ($(snapshot),)
SNAPSHOT_CFLAGS	:= -DSNAPSHOT='$(shell cat $(snapshot))'
EXTRA_CFLAGS	+= $(SNAPSHOT_CFLAGS)
endif

KDIR		:= /lib/modules/$(KERNELRELEASE)/build
PWD		:= $(shell pwd)
DEST		:= /lib/modules/$(KERNELRELEASE)/$(MDIR)
KDIR26		:= /lib/modules/$(KERNELRELEASE)/kernel/drivers/media
KDIRUSB		:= /lib/modules/$(KERNELRELEASE)/kernel/drivers/usb/media

#################################################
# Compiler fixup rules

CC += -I$(obj)

ifeq ($(VERSION).$(PATCHLEVEL),2.6)
 CPPFLAGS := -I$(SUBDIRS)/../linux/include $(CPPFLAGS) -I$(SUBDIRS)/
 MYCFLAGS :=
else
 MYCFLAGS := CFLAGS="-I../linux/include -D__KERNEL__ -I$(KDIR)/include -DEXPORT_SYMTAB"
endif


#################################################
# which files to install?

inst-m		:= $(wildcard *.ko)
ifeq ($(inst-m),)
  inst-m	:= $(obj-m)
endif

v4l_modules := $(shell /sbin/lsmod|cut -d' ' -f1 ) $(patsubst %.ko,%,$(inst-m))

#################################################
# locales seem to cause trouble sometimes.
LC_ALL = POSIX
export LC_ALL


#################################################
# Generic wildcard rules

%.asm: %.o
	objdump -S $< > $@

#################################################
# all file compilation rule

all:: allmodconfig default

#################################################
# Compiling preparation rules

Makefile.media::
	scripts/make_makefile.pl

.version:
ifneq ($(KERNELRELEASE),)
	echo -e VERSION=$(VERSION)\\nPATCHLEVEL:=$(PATCHLEVEL)\\nSUBLEVEL:=$(SUBLEVEL)\\nKERNELRELEASE:=$(KERNELRELEASE) > $(obj)/.version
else
	echo "No version yet."
	uname -r|perl -ne 'if (/^([0-9]*)\.([0-9])*\.([0-9]*)(.*)$$/) { printf ("VERSION=%s\nPATCHLEVEL:=%s\nSUBLEVEL:=%s\nKERNELRELEASE:=%s.%s.%s%s\n",$$1,$$2,$$3,$$1,$$2,$$3,$$4); };' > $(obj)/.version
endif

links::
	@echo creating symbolic links...
	@find ../linux/drivers/media -name '*.[ch]' -type f -exec ln -sf '{}' . \;
	@find ../linux/sound -name '*.[ch]' -type f -exec ln -sf '{}' . \;

kernel-links makelinks::
	cd ..;	v4l/scripts/makelinks.sh $(KDIR)

#################################################
# Cardlist updating rule

card cardlist cardlists:
	scripts/cardlist

#################################################
# Cleaning rules

clean::
	@find . -name '*.c' -type l -exec rm '{}' \;
	@find . -name '*.h' -type l -exec rm '{}' \;
	-rm -f *~ *.o *.ko .*.o.cmd .*.ko.cmd *.mod.c av7110_firm.h fdump \
		ivtv-svnversion.h \
		Kconfig Kconfig.kern .config .config.cmd

distclean:: clean
	-rm -f .version .*.o.flags .*.o.d Makefile.media
	-rm -rf .tmp_versions
	@find .. -name '*.orig' -exec rm '{}' \;
	@find .. -name '*.rej' -exec rm '{}' \;

#################################################
# Kernel module insert/removal rules

rmmodules::
	rmmod -w $(shell echo "$(v4l_modules)"|sed s,' ','\n',g|sed s,'-','_',g|sort|uniq -d)

insmod load::
	scripts/insmod.sh load

rmmod unload::
	scripts/insmod.sh unload

reload::
	scripts/insmod.sh reload

#################################################
# Configuration rules

xconfig:: links .version
	./scripts/make_kconfig.pl
	$(KDIR)/scripts/kconfig/qconf Kconfig
	./scripts/make_noconfig.pl

gconfig:: links .version
	./scripts/make_kconfig.pl
	$(KDIR)/scripts/kconfig/gconf Kconfig
	./scripts/make_noconfig.pl

config:: links .version
	./scripts/make_kconfig.pl
	$(KDIR)/scripts/kconfig/conf Kconfig
	./scripts/make_noconfig.pl

menuconfig:: links .version
	./scripts/make_kconfig.pl
	-ln -s /usr/src/linux-2.6.16/scripts/kconfig scripts/
	$(KDIR)/scripts/kconfig/mconf Kconfig
	./scripts/make_noconfig.pl

allmodconfig:: links .version
	./scripts/make_kconfig.pl
	$(KDIR)/scripts/kconfig/conf -m Kconfig
	cat .config|grep -v CONFIG_DVB_AV7110_FIRMWARE >.config.new
	mv .config.new .config
	./scripts/make_noconfig.pl

#################################################
# IVTV link rules

ivtv-checkout::
	@if [ ! -d ivtv ]; then \
		echo retrieving the latest ivtv sources from ivtvdriver.org; \
		echo this step requires subversion to be installed; \
		svn co http://ivtvdriver.org/svn/ivtv/trunk ivtv; \
	fi

ivtv-update ivtv-up:: ivtv
	@svn up ivtv

ivtv-links:: ivtv-checkout
	@echo creating ivtv symbolic links...
	@find ivtv/driver -name '*.[ch]' -type f -exec ln -sf '{}' . \;
	@find ivtv/i2c-drivers -name '*.[ch]' -type f -exec ln -sf '{}' . \;

ivtv:: ivtv-links
	@echo '#define IVTV_DRIVER_VERSION_COMMENT ' \
		'"(v4l-dvb + ivtv virtual merge)' \
		"`svn info ivtv | grep Revision`"'"' > ivtv-svnversion.h
	@echo ivtv trunk merged. Run make to build the entire tree.

cx88-ivtv::
	@echo creating cx88-ivtv symbolic links...
	@ln -sf ../v4l_experimental/cx88-ivtv.c .

#################################################
# Old instalation rule

old-install:: rminstall
	@echo -e "\nInstalling new V4L modules at $(DEST)..."

	@strip --strip-debug $(inst-m)

	-install -d $(DEST)
	-install -m 644 -c $(inst-m) $(DEST)

	/sbin/depmod -a ${KERNELRELEASE}

#################################################
# Tree management rules

change changes changelog::
	make -C .. changelog

update::
	make -C .. update

commit cvscommit hgcommit::
	make -C .. commit

push::
	make -C .. push

#################################################
# build tarballs rules

RPWD	:= $(shell cd .. && pwd)
thisdir	:= $(notdir $(RPWD))
name    := $(thisdir)
date    := $(shell date +%Y%m%d)
tardest	?= .

snapdir := $(HOME)/snapshot
snap	:= $(name)

snapshot snap tarball: update distclean
	echo $(thisdir)
	echo $(name)
	echo $(date) > .snapshot
	(cd ..; tar czf $(snapdir)/$(snap)-$(date).tar.gz .)
	cp ChangeLog /$(snapdir)/$(snap)-ChangeLog-$(date)
	$(MAKE) -C $(snapdir)