#! /usr/bin/make -f

# Name of package
package		= kernmod
# 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

## Now to determine the kernel version, normally supplied by make-kpkg
ifeq ($(strip $(KVERS)),)
# Now we need to get the kernel-version somehow (we are not running
# under make-kpkg?)
ifeq ($(strip $(KSRC)),)
$(error Error. I do not know how to determine the kernel version)
else
kversion :=$(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/' 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		= ..

# Lets define the standard targets first

.PHONY: binary
binary: binary-indep binary-arch

# Please note that I've put binary-common with binary-indep here. For
# package where binaries are in binary-common this should be moved to
# binary-arch
.PHONY: binary-indep
binary-indep: binary-source binary-common

# For binary-arch we do nothing so autobuilder don't try to build the
# kernel modules.
.PHONY: binary-arch
binary-arch:


# 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)
.PHONY: kdist_config
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
.PHONY: kdist_image
kdist_image:
	$(MAKE) $(MFLAGS) debian/rules binary-modules
	$(MAKE) $(MFLAGS) debian/rules 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).
.PHONY: kdist_clean
kdist_clean:
	$(MAKE) $(MFLAGS) debian/rules clean

# the binary-source target creates the kernmod-source package. It does
# this by copying the entire package source into debian/tmp and running
# clean in the copy
.PHONY: binary-source
binary-source:
# Perform some simple tests
	test -f debian/rules
	test `id -u` = 0

# Initialize some things
	-rm -rf debian/tmp debian/substvars
	install -d -m 755 -o root -g root debian/tmp

# Copy the entire source to the proper location
	install -d -m 755 -o root -g root debian/tmp/usr/src/modules/$(package)
	find . \( -name \*.o -path ./debian/tmp \) -prune -o print | \
		cpio -admp debian/tmp/usr/src/modules/$(package)
	( cd debian/tmp/usr/src/modules/$(package) ; \
	  $(MAKE) $(MFLAGS) -f debian/rules clean )

# Install the usual stuff now. Note that we symlink the doc-directory
# to the kernmod-modules directory so we have all the docs in a single
# place.
	install -d -m 755 -o root -g root debian/tmp/usr/doc
	ln -s $(package)-modules debian/tmp/usr/doc/$(package)-source

	install -d -m 755 -o root -g root debian/tmp/DEBIAN
	install -p -m 644 -o root -g root debian/control debian/tmp/DEBIAN/

# Generate the package
	find debian/tmp -type f | grep -v "./DEBIAN" | xargs md5sum | \
		sed -e 's#debian/tmp/##' > debian/tmp/DEBIAN/md5sums
	dpkg-gencontrol -p$(package)-source
	dpkg --build debian/tmp ..

# the binary-common target creates the kernmod-common package.
.PHONY: binary-common
binary-common:
# Perform some simple tests
	test -f debian/rules
	test `id -u` = 0

# Initialize some things
	-rm -rf debian/tmp debian/substvars
	install -d -m 755 -o root -g root debian/tmp

	@echo TODO: put everything you want to put in the kernmod-common
	@echo package in here

# Generate the package
	find debian/tmp -type f | grep -v "./DEBIAN" | xargs md5sum | \
		sed -e 's#debian/tmp/##' > debian/tmp/DEBIAN/md5sums
	dpkg-gencontrol -p$(package)-common
	dpkg --build debian/tmp ..

# the binary-modules target creates the kernmod-modules-XXX package.
.PHONY: binary-modules
binary-modules:
# Perform some simple tests
	test -f debian/rules
	test `id -u` = 0

# Initialize some things
	-rm -rf debian/tmp debian/substvars
	install -d -m 755 -o root -g root debian/tmp

	@echo TODO: put everything you want to put in the kernmod-modules
	@echo package in here

# Generate the package
	echo "kpkg:Package-Version=$(epoch)$(pversion)+$(non_epoch_version)" \
		 >> debian/substvars
	echo "kpkg:Kernel-Version=$(KVERS)" >> debian/substvars

	find debian/tmp -type f | grep -v "./DEBIAN" | xargs md5sum | \
		sed -e 's#debian/tmp/##' > debian/tmp/DEBIAN/md5sums
	dpkg-gencontrol -p$(package)-modules-$(non_epoch_version)  \
		-v$(epoch)$(pversion)+$(non_epoch_version)
	dpkg --build debian/tmp ..