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ifdef SUBDIRS
  ZAP_KERNEL	= $(SUBDIRS)
else
  ZAP_KERNEL	= $(M)
endif

EXTRA_CFLAGS	=	$(XPP_LOCAL_CFLAGS)	\
			-I$(ZAP_KERNEL)	\
			-DDEBUG			\
			-DPOLL_DIGITAL_INPUTS	\
			-DWITH_ECHO_SUPPRESSION	\
			-DDEBUG_PCMTX		\
			-DPROTOCOL_DEBUG	\
			-g
			#

ifneq	(,$(shell grep -w echo_can_state_t $(ZAP_KERNEL)/zaptel.h))
EXTRA_CFLAGS	+= -DZAPTEL_EC_TYPEDEF
endif

obj-m		+= xpp.o xpd_fxs.o xpd_fxo.o xpd_pri.o

HAS_BRISTUFF	:= $(shell grep -c '^[[:space:]]*\#[[:space:]]*define[[:space:]]\+CONFIG_ZAPATA_BRI_DCHANS\>' $(ZAP_KERNEL)/zconfig.h)

# Build only supported modules
ifneq	(,$(filter y m,$(CONFIG_USB)))
obj-m		+= xpp_usb.o
endif
ifneq	(0,$(HAS_BRISTUFF))
obj-m		+= xpd_bri.o
endif

xpp-y		+= xbus-core.o xbus-sysfs.o xbus-pcm.o xframe_queue.o xpp_zap.o xproto.o card_global.o zap_debug.o
xpd_fxs-y	+= card_fxs.o
xpd_fxo-y	+= card_fxo.o
xpd_bri-y	+= card_bri.o
xpd_pri-y	+= card_pri.o

ifeq	(y,$(PARPORT_DEBUG))
EXTRA_CFLAGS	+= -DDEBUG_SYNC_PARPORT
obj-m		+= parport_debug.o
endif

# Handle versioning
XPP_VERSION_STR	?= $(shell if [ -r $(obj)/.version ]; then echo "\"`cat $(obj)/.version`\""; else echo '"Unknown"'; fi)
clean-files	:= xpp_version.h

$(obj)/card_fxs.o $(obj)/card_fxo.o $(obj)/card_bri.o $(obj)/card_pri.o $(obj)/xpp_usb.o $(obj)/xpp.o: $(obj)/xpp_version.h

$(obj)/xpp_version.h: FORCE
	$(Q)echo '#define	XPP_VERSION	$(XPP_VERSION_STR)' > $@.tmp
	$(Q)if cmp -s $@.tmp $@ ; then echo; else \
		mv $@.tmp $@ ; \
	fi
	$(Q)rm -f $@.tmp

.PHONY: FORCE
FORCE: