#!/usr/bin/make -f
# Derived from:
# Sample debian/rules that uses debhelper,
# GNU copyright 1997 by Joey Hess.
# Copyright Ron Lee 2003, 2004.

#export DH_VERBOSE=1

# Must be exported or the dh_* scripts will never see it.
export DH_OPTIONS

# Do this here instead of in a compat file so we don't need two of them,
# one for the main source package and one for the module binary package.
export DH_COMPAT=4


CFLAGS = -Wall -g

ifneq (,$(findstring noopt,$(DEB_BUILD_OPTIONS)))
	CFLAGS += -O0
else
	CFLAGS += -O2
endif
ifeq (,$(findstring nostrip,$(DEB_BUILD_OPTIONS)))
	INSTALL_PROGRAM += -s
endif


### KERNEL SETUP
### Setup the stuff needed for making kernel module packages
### taken from /usr/share/kernel-package/sample.module.rules

# Name of package
package		= cpad-kernel
# KSRC is the location of the kernel source. This is the default value,
# when make-kpkg is used it will supply to real value
KSRC		= /usr/src/linux
# KDREV is the package-revision, as given to make-kpkg by the user.
# Just put a simply default value in here which we use when we test
# the packagebuilding without make-kpkg
ifeq ($(strip $(KDREV)),)
KDREV		= "test1.0"
endif

ifeq ($(strip $(KSRC)),)
$(error Error. I do not know how to determine the kernel version)
else

# We need this one later in any case.
kplevel := $(shell egrep '^PATCHLEVEL +=' $(KSRC)/Makefile 2>/dev/null | \
                   sed -e 's/[^0-9]*\([0-9]*\)/\1/')

## Now to determine the kernel version, normally supplied by make-kpkg
ifeq ($(strip $(KVERS)),)
# Now we need to get the kernel-version somehow (we are not running
# under make-kpkg?)
kversion        := $(shell egrep '^VERSION +=' $(KSRC)/Makefile 2>/dev/null | \
                           sed -e 's/[^0-9]*\([0-9]*\)/\1/')
#kplevel	        := $(shell egrep '^PATCHLEVEL +=' $(KSRC)/Makefile 2>/dev/null | \
#                           sed -e 's/[^0-9]*\([0-9]*\)/\1/')
ksublevel       := $(shell egrep '^SUBLEVEL +=' $(KSRC)/Makefile 2>/dev/null | \
                           sed -e 's/[^0-9]*\([0-9]*\)/\1/')
EXTRA_VERSION   := $(shell egrep '^EXTRAVERSION +=' $(KSRC)/Makefile 2>/dev/null | \
                           sed -e 's/EXTRAVERSION[\t ]*=[\t ]*\(.*\)/\1/')
kextra          := $(strip $(EXTRA_VERSION))
HAVE_NEW_MODLIB := $(shell egrep '\(INSTALL_MOD_PATH\)' \
                           $(KSRC)/Makefile 2>/dev/null )

# If you want to have more than one kernel configuration per kernel
# version, set FLAVOUR in the top level kernel Makefile *before*
# invoking make-kpkg -- it will be appended to UTS_RELEASE in
# version.h (separated by a hyphen). This affects everything -- the
# names and versions of the image, source, headers, and doc packages,
# and where the modules are searched for in /lib/modules.

ifdef FLAVOUR
# uhm - should check if we really have a Makefile capable of Flavours?
endif

FLAVOUR := $(shell grep ^FLAVOUR $(KSRC)/Makefile 2>/dev/null | \
                   perl -ple 's/FLAVOUR[\s:=]+//g')

ifneq ($(strip $(FLAVOUR)),)
INT_FLAV := -$(FLAVOUR)
FLAV_ARG := FLAVOUR=$(FLAVOUR)
else
INT_FLAV :=
FLAV_ARG :=
endif

## This is the replacement for FLAVOUR
ifneq ($(strip $(APPEND_TO_VERSION)),)
iatv       := $(strip $(APPEND_TO_VERSION))
EXTRAV_ARG := EXTRAVERSION=${EXTRA_VERSION}${iatv}
else
iatv :=
EXTRAV_ARG :=
endif

KVERS = $(kversion).$(kplevel).$(ksublevel)$(kextra)$(iatv)$(INT_FLAV)

endif
endif

non_epoch_version = $(shell echo $(KVERS) | perl -pe 's/^\d+://')
epoch             = $(shell echo $(KVERS) | perl -ne 'm/^(\d+:)/ && print $$1')

# We also need the package version
pversion	= $(shell sed -ne '1s/.*(\(.*\)).*/\1/p' debian/changelog)

# MODDIR is the place where the final .deb package should be made. This is the
# default value, when make-kpkg is used it will supply to real value
MODDIR		= ..

pcommon  = cpad-common
pmodules = $(package)-module-$(non_epoch_version)
psource  = $(package)-source
pdev     = $(package)-dev

# Prepares the package for distribution.  Intended for the kernel
# maintainer.
kdist: kdist_clean kdist_config kdist_image

# The kdist_configure target is called by make-kpkg modules_config. It
# should configure the module so it is ready for compilation (mostly
# useful for calling configure)
kdist_config:
	@echo Nothing to configure

# the kdist_image target is called by make-kpkg modules_image. It is
# responsible for compiling the module and creating the package. It
# should also clean up after making the module. Please note we use a
# seperate binary-modules target to make testing the package building
# easier
kdist_image:
	$(MAKE) $(MFLAGS) -f debian/rules binary-modules
	$(MAKE) $(MFLAGS) -f debian/rules kdist_clean

# the kdist_clean target is called by make-kpkg modules_clean. It is
# responsible for cleaning up any changes that have been made by the
# other kdist_commands (except for the .deb files created).
kdist_clean: clean-common
	dh_testdir
	dh_testroot

	cd cpad && $(MAKE) clean;
	cd cpad-2.6 && $(MAKE) clean;
	rm -f debian/$(pmodules).* debian/control

# the binary-modules target prepares the $(pmodules) package.
# It is called by make-kpkg and *not* during a normal build
binary-modules: DH_OPTIONS=-p$(pmodules)
binary-modules: debian/control
	# Is this needed for setting up a Depends?
	#echo "kpkg:Package-Version=$(epoch)$(pversion)+$(non_epoch_version)" \
	#	 >> debian/$(package).substvars
	echo "kpkg:Kernel-Version=$(non_epoch_version)" > \
		debian/$(pmodules).substvars

	# The substvars mechanism seems slightly broken, hack to get around it
	# stolen from the qce-ga package. Yaaaa!
	# We do this above instead so control exists when the clean targets
	# are run.
	#sed -e 's/$${kpkg\:Kernel\-Version}/$(non_epoch_version)/' \
	#debian/cpad.control > debian/control

	# Make sure we've had a chance to get a control file before doing this:
	dh_testdir
	dh_testroot
	dh_clean -k
	
	# Set up per package control files with suitable names
	for f in modules templates; do						\
	    cp -a debian/cpad.$$f debian/$(pmodules).$$f;			\
	done
	for f in postinst config; do						\
	    echo "#!/bin/sh" | cat - debian/cpad.$$f > debian/$(pmodules).$$f;	\
	done

	case "$(kplevel)" in							\
		4)								\
		    ( cd cpad && $(MAKE) );					\
		    dh_install cpad/cpad.o lib/modules/$(non_epoch_version)/kernel/drivers/usb;	\
		    dh_installmodules;						\
		    ;;								\
		6)								\
		    ( cd cpad-2.6 && $(MAKE) KVERSION=$(non_epoch_version) );	\
		    dh_install cpad-2.6/cpad.ko lib/modules/$(non_epoch_version)/extra;	\
		    ;;								\
		*)								\
		    echo " *** Error unknown or unsupported kernel patchlevel";	\
		    exit 1;							\
		    ;;								\
	esac

	dh_installdebconf
	dh_installchangelogs
	dh_installdocs
	dh_compress
	dh_fixperms

	dh_installdeb
	#dh_gencontrol -- -v$(epoch)$(pversion)+$(non_epoch_version)+$(KDREV)
	dh_gencontrol -- -v$(epoch)$(pversion)
	dh_md5sums
	#dh_builddeb --destdir=$(KSRC)/..
	dh_builddeb --destdir=$(MODDIR)

### end  KERNEL SETUP


debian/control:
	sed -e 's/$${kpkg\:Kernel\-Version}/$(non_epoch_version)/' \
	debian/cpad.control > debian/control


build-arch: build-arch-stamp
build-arch-stamp:
	dh_testdir
	#cd cpad && $(MAKE)
	touch $@


build-indep:  build-indep-stamp
build-indep-stamp:
	dh_testdir

	# Add here command to compile/build the arch indep package.
	# It's ok not to do anything here, if you don't need to build
	#  anything for this package.
	#/usr/bin/docbook-to-man debian/cpad.sgml > cpad.1

	po2debconf debian/cpad.po-templates > debian/cpad.templates

	touch $@

build: build-arch build-indep

clean: clean-common
	dh_testdir
	dh_testroot
	cd cpad && $(MAKE) clean
	cd cpad-2.6 && $(MAKE) clean

	# Ensure po files are up to date for the source package.
	debconf-updatepo

clean-common: debian/control
	dh_testdir
	dh_testroot
	rm -f *-stamp
	dh_clean

install: build install-source install-modules-common install-dev

install-source: DH_OPTIONS=-p$(psource)
install-source:
	dh_testdir
	dh_testroot
	dh_clean -k

	# Copy the driver source
	dh_install cpad cpad-2.6 usr/src/modules/$(package)

	# Copy the needed debian/ pieces
	dh_install debian/rules 				\
		   debian/changelog 				\
		   debian/copyright 				\
		   debian/cpad.config	 			\
		   debian/cpad.control	 			\
		   debian/cpad.modules				\
		   debian/cpad.postinst 			\
		   debian/cpad.templates			\
		   usr/src/modules/$(package)/debian

	# Copy the userspace code as an example.
	dh_installexamples cpad_05/user/*
	dh_installexamples cpad_05/README

	dh_installdebconf

install-modules-common: DH_OPTIONS=-p$(pcommon)
install-modules-common:
	dh_testdir
	dh_testroot
	dh_clean -k

	dh_install debian/cpad.hotplug	etc/hotplug.d/input


install-dev: DH_OPTIONS=-p$(pdev)
install-dev:
	dh_testdir
	dh_testroot
	dh_clean -k

	dh_install cpad-2.6/cpad.h	usr/include/linux


# Build architecture-independent files here.
# Pass -i to all debhelper commands in this target to reduce clutter.
binary-indep: build install
	dh_testdir -i
	dh_testroot -i
#	dh_installdebconf -i
	dh_installdocs -i
#	dh_installexamples -i
#	dh_installmenu -i
#	dh_installlogrotate -i
#	dh_installemacsen -i
#	dh_installpam -i
#	dh_installmime -i
#	dh_installinit -i
#	dh_installcron -i
#	dh_installman -i
#	dh_installinfo -i
#	dh_undocumented -i
	dh_installchangelogs  -i
#	dh_link -i
	dh_compress -i
	dh_fixperms -i
	dh_installdeb -i
#	dh_perl -i
	dh_gencontrol -i
	dh_md5sums -i
	dh_builddeb -i

# Build architecture-dependent files here.
binary-arch: build install
	dh_testdir -a
	dh_testroot -a
#	dh_installdebconf -a
	dh_installdocs -a
	dh_installexamples -a
	dh_installmenu -a
#	dh_installlogrotate -a
#	dh_installemacsen -a
#	dh_installpam -a
#	dh_installmime -a
#	dh_installinit -a
	dh_installcron -a
#	dh_installman -a
	dh_installinfo -a
#	dh_undocumented -a
	dh_installchangelogs  -a
	dh_strip -a
	dh_link -a
	dh_compress -a
	dh_fixperms -a
#	dh_makeshlibs -a
	dh_installdeb -a
#	dh_perl -a
	dh_shlibdeps -a
	dh_gencontrol -a
	dh_md5sums -a
	dh_builddeb -a

# No binary arch for this one.
binary: binary-indep #binary-arch

.PHONY: build clean clean-common                                    \
        binary-indep binary-arch binary binary-modules              \
        install install-source install-modules-common install-dev   \
        kdist kdist_config kdist_image kdist_clean

