#
# Makefile for Zaptel driver modules
#
# Copyright (C) 2001-2007 Digium, Inc.
#
#

ifneq ($(KBUILD_EXTMOD),)
# We only get in here if we're from kernel 2.6 <= 2.6.9 and going through 
# Kbuild. Later versions will include Kbuild instead of Makefile.
include $(src)/Kbuild

else

ifeq ($(MAKELEVEL),0)
PWD:=$(shell pwd)
endif

ifeq ($(ARCH),)
ARCH:=$(shell uname -m | sed -e s/i.86/i386/)
endif

ifeq ($(DEB_HOST_GNU_TYPE),)
UNAME_M:=$(shell uname -m)
else
UNAME_M:=$(DEB_HOST_GNU_TYPE)
endif

# If you want to build for a kernel other than the current kernel, set KVERS
ifndef KVERS
KVERS:=$(shell uname -r)
endif
ifndef KSRC
  ifneq (,$(wildcard /lib/modules/$(KVERS)/build))
    KSRC:=/lib/modules/$(KVERS)/build
  else
    KSRC_SEARCH_PATH:=/usr/src/linux-2.4 /usr/src/linux
    KSRC:=$(shell for dir in $(KSRC_SEARCH_PATH); do if [ -d $$dir ]; then echo $$dir; break; fi; done)
  endif
endif
KVERS_MAJ:=$(shell echo $(KVERS) | cut -d. -f1-2)
KINCLUDES:=$(KSRC)/include

# We use the kernel's .config file as an indication that the KSRC
# directory is indeed a valid and configured kernel source (or partial
# source) directory.
#
# We also source it, as it has the format of Makefile variables list.
# Thus we will have many CONFIG_* variables from there.
KCONFIG:=$(KSRC)/.config
ifneq (,$(wildcard $(KCONFIG)))
  HAS_KSRC=yes
  include $(KCONFIG)
else
  HAS_KSRC=no
endif

# Set HOTPLUG_FIRMWARE=no to override automatic building with hotplug support
# if it is enabled in the kernel.
ifneq (,$(wildcard $(DESTDIR)/etc/udev/rules.d))
  DYNFS=yes
  UDEVRULES=yes
endif
ifeq (yes,$(HAS_KSRC))
  HOTPLUG_FIRMWARE:=$(shell if grep -q '^CONFIG_FW_LOADER=[ym]' $(KCONFIG); then echo "yes"; else echo "no"; fi)
endif

#NOTE NOTE NOTE
#
# all variables set before the include of Makefile.kernel26 are needed by the 2.6 kernel module build process

ifneq ($(KBUILD_EXTMOD),)

include $(src)/Makefile.kernel26

else

#
# Features are now configured in zconfig.h
#

MODULE_ALIASES=wcfxs wctdm8xxp wct2xxp

KMAKE = $(MAKE) -C $(KSRC) ARCH=$(ARCH) SUBDIRS=$(PWD)/drivers/dahdi DAHDI_INCLUDE=$(PWD)/include HOTPLUG_FIRMWARE=$(HOTPLUG_FIRMWARE)
KMAKE_INST = $(KMAKE) INSTALL_MOD_PATH=$(DESTDIR) INSTALL_MOD_DIR=dahdi modules_install

ROOT_PREFIX=

CONFIG_FILE=/etc/zaptel.conf
CFLAGS+=-DZAPTEL_CONFIG=\"$(CONFIG_FILE)\"

# sample makefile "trace print"
#tracedummy=$(shell echo ====== GOT HERE ===== >&2; echo >&2)

CHKCONFIG	:= $(wildcard /sbin/chkconfig)
UPDATE_RCD	:= $(wildcard /usr/sbin/update-rc.d)
ifeq (,$(DESTDIR))
  ifneq (,$(CHKCONFIG))
    ADD_INITD	:= $(CHKCONFIG) --add zaptel
  else
    ifndef (,$(UPDATE_RCD))
      ADD_INITD	:= $(UPDATE_RCD) zaptel defaults 15 30
    endif
  endif
endif

INITRD_DIR	:= $(firstword $(wildcard /etc/rc.d/init.d /etc/init.d))
ifneq (,$(INITRD_DIR))
  INIT_TARGET	:= $(DESTDIR)$(INITRD_DIR)/zaptel
  COPY_INITD	:= install -D zaptel.init $(INIT_TARGET)
endif
RCCONF_DIR	:= $(firstword $(wildcard /etc/sysconfig /etc/default))

NETSCR_DIR	:= $(firstword $(wildcard /etc/sysconfig/network-scripts ))
ifneq (,$(NETSCR_DIR))
  NETSCR_TARGET	:= $(DESTDIR)$(NETSCR_DIR)/ifup-hdlc
  COPY_NETSCR	:= install -D ifup-hdlc $(NETSCR_TARGET)
endif

ifneq ($(wildcard .version),)
  DAHDIVERSION:=$(shell cat .version)
else
ifneq ($(wildcard .svn),)
  DAHDIVERSION=SVN-$(shell build_tools/make_svn_branch_name)
endif
endif

all: modules

modules: prereq
ifeq (no,$(HAS_KSRC))
	echo "You do not appear to have the sources for the $(KVERS) kernel installed."
	exit 1
endif
	$(KMAKE) modules

version.h:
	@DAHDIVERSION="${DAHDIVERSION}" build_tools/make_version_h > $@.tmp
	@if cmp -s $@.tmp $@ ; then :; else \
		mv $@.tmp $@ ; \
	fi
	@rm -f $@.tmp

prereq: version.h

stackcheck: checkstack modules
	./checkstack kernel/*.ko kernel/*/*.ko

install: all devices install-modules install-firmware install-include
	@echo "###################################################"
	@echo "###"
	@echo "### Zaptel installed successfully."
	@echo "### If you have not done so before, install init scripts with:"
	@echo "###"
	@echo "###   make config"
	@echo "###"
	@echo "###################################################"

# Pushing those two to a separate target that is not used by default:
install-modconf:
	build_tools/genmodconf $(BUILDVER) "$(ROOT_PREFIX)" "$(filter-out zaptel ztdummy xpp zttranscode ztdynamic,$(BUILD_MODULES)) $(MODULE_ALIASES)"
	@if [ -d /etc/modutils ]; then \
		/sbin/update-modules ; \
	fi

install-firmware:
ifeq ($(HOTPLUG_FIRMWARE),yes)
	$(MAKE) -C firmware hotplug-install DESTDIR=$(DESTDIR) HOTPLUG_FIRMWARE=$(HOTPLUG_FIRMWARE)
endif

install-include:
	install -D -m 644 include/dahdi/kernel.h $(DESTDIR)/usr/include/dahdi/kernel.h
	install -D -m 644 include/dahdi/user.h $(DESTDIR)/usr/include/dahdi/user.h

devices:
ifneq (yes,$(DYNFS))
	mkdir -p $(DESTDIR)/dev/zap
	rm -f $(DESTDIR)/dev/zap/ctl
	rm -f $(DESTDIR)/dev/zap/channel
	rm -f $(DESTDIR)/dev/zap/pseudo
	rm -f $(DESTDIR)/dev/zap/timer
	rm -f $(DESTDIR)/dev/zap/transcode
	rm -f $(DESTDIR)/dev/zap/253
	rm -f $(DESTDIR)/dev/zap/252
	rm -f $(DESTDIR)/dev/zap/251
	rm -f $(DESTDIR)/dev/zap/250
	mknod $(DESTDIR)/dev/zap/ctl c 196 0
	mknod $(DESTDIR)/dev/zap/transcode c 196 250
	mknod $(DESTDIR)/dev/zap/timer c 196 253
	mknod $(DESTDIR)/dev/zap/channel c 196 254
	mknod $(DESTDIR)/dev/zap/pseudo c 196 255
	N=1; \
	while [ $$N -lt 250 ]; do \
		rm -f $(DESTDIR)/dev/zap/$$N; \
		mknod $(DESTDIR)/dev/zap/$$N c 196 $$N; \
		N=$$[$$N+1]; \
	done
else # DYNFS
  ifneq (yes,$(UDEVRULES)) #!UDEVRULES
	@echo "**** Dynamic filesystem detected -- not creating device nodes"
  else # UDEVRULES
	install -d $(DESTDIR)/etc/udev/rules.d
	build_tools/genudevrules > $(DESTDIR)/etc/udev/rules.d/zaptel.rules
  endif
endif

install-udev: devices

uninstall-hotplug:
	$(MAKE) -C firmware hotplug-uninstall DESTDIR=$(DESTDIR)

uninstall-modules:
	@./build_tools/uninstall-modules $(DESTDIR)/lib/modules/$(KVERS) $(ALL_MODULES)

install-modules: # uninstall-modules
	$(KMAKE_INST)
	[ `id -u` = 0 ] && /sbin/depmod -a $(KVERS) || :

config:
ifneq (,$(COPY_INITD))
	$(COPY_INITD)
endif
ifneq (,$(RCCONF_DIR))
  ifeq (,$(wildcard $(DESTDIR)$(RCCONF_DIR)/zaptel))
	$(INSTALL) -D -m 644 zaptel.sysconfig $(DESTDIR)$(RCCONF_DIR)/zaptel
  endif
endif
ifneq (,$(COPY_NETSCR))
	$(COPY_NETSCR)
endif
ifneq (,$(ADD_INITD))
	$(ADD_INITD)
endif
	@echo "Zaptel has been configured."
	@echo ""
	@echo "If you have any zaptel hardware it is now recommended to "
	@echo "edit /etc/default/zaptel or /etc/sysconfig/zaptel and set there an "
	@echo "optimal value for the variable MODULES ."
	@echo ""
	@echo "I think that the zaptel hardware you have on your system is:"
	@kernel/xpp/utils/zaptel_hardware || true

update:
	@if [ -d .svn ]; then \
		echo "Updating from Subversion..." ; \
		svn update | tee update.out; \
		rm -f .version; \
		if [ `grep -c ^C update.out` -gt 0 ]; then \
			echo ; echo "The following files have conflicts:" ; \
			grep ^C update.out | cut -b4- ; \
		fi ; \
		rm -f update.out; \
	else \
		echo "Not under version control";  \
	fi

clean:
	$(KMAKE) clean
	$(MAKE) -C firmware clean

distclean: dist-clean

dist-clean: clean
	@$(MAKE) -C firmware dist-clean

.PHONY: distclean dist-clean clean version.h all _all install b410p devices programs modules tests devel data stackcheck install-udev config update install-programs install-modules install-include install-libs install-utils-subdirs utils-subdirs uninstall-modules

endif

#end of: ifneq ($(KBUILD_EXTMOD),)
endif