#!/usr/bin/make -f
#
# Based on the work by Marcus Brinkmann <brinkmd@debian.org>
# Rewritten by Guillem Jover <guillem@debian.org>
#

FULL_VERSION     := $(shell dpkg-parsechangelog | grep ^Version: | sed -e 's/^.*: //g')
NOEPOCH_VERSION  := $(shell echo $(FULL_VERSION) | sed -e 's/.*://g')
TAR_VERSION      := $(shell echo $(NOEPOCH_VERSION) | sed -e 's/-.*//g')
UPSTREAM_VERSION := $(shell echo $(TAR_VERSION) | sed -e 's/\.dfsg.*//g')
NOGIT_VERSION    := $(shell echo $(UPSTREAM_VERSION) | sed -e 's/+git[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]//g')
VERSION          := $(NOGIT_VERSION)
MAJOR            := $(shell echo $(VERSION) | sed -e 's/\..*//g')
DEB_HOST_ARCH_OS := $(shell dpkg-architecture -qDEB_HOST_ARCH_OS)

ifneq (,$(filter custom,$(DEB_BUILD_OPTIONS)))
VERSION := $(NOEPOCH_VERSION)
endif

MACHINE         := 686

pkg := gnumach-image-$(VERSION)-$(MACHINE)
pkg_xen := gnumach-image-$(VERSION)-xen-$(MACHINE)
pkg_udeb := kernel-image-$(VERSION)-$(MACHINE)-di
pkg_xen_udeb := kernel-image-$(VERSION)-xen-$(MACHINE)-di
pkg_dbg := gnumach-image-$(VERSION)-$(MACHINE)-dbg
pkg_xen_dbg := gnumach-image-$(VERSION)-xen-$(MACHINE)-dbg
pkg_common := gnumach-common
pkg_dev := gnumach-dev

D := $(CURDIR)/debian/tmp
D_UDEB := $(D)-udeb
D_XEN := $(D)-xen
D_XEN_UDEB := $(D)-xen-udeb
D_DBG := $(D)-dbg
D_XEN_DBG := $(D)-xen-dbg

DEB_BUILD_GNU_TYPE := $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)
DEB_HOST_GNU_TYPE := $(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)

CFLAGS = -Wall -g -pipe -fno-strict-aliasing

ifneq (,$(filter noopt,$(DEB_BUILD_OPTIONS)))
	CFLAGS += -O0
else
	CFLAGS += -O2
endif

ifneq (,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
DEB_PARALLEL_JOBS ?= $(patsubst parallel=%,%,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
endif

ifneq (,$(DEB_PARALLEL_JOBS))
MAKEFLAGS += -j$(DEB_PARALLEL_JOBS)
endif

drivers := 

common_configure := \
		--build=$(DEB_BUILD_GNU_TYPE) --host=$(DEB_HOST_GNU_TYPE) \
		--prefix=/usr \
		--exec-prefix=/ \
		--disable-net-group \
		--disable-pcmcia-group \
		--disable-wireless-group

debian/control: debian/control.stamp
debian/control.stamp: debian/control.in
ifneq (,$(filter custom,$(DEB_BUILD_OPTIONS)))
	@echo Building a custom kernel: "$(VERSION)"
else
	@echo Building a stock kernel: "$(VERSION)"
endif
	sed -e 's/@version@/$(VERSION)/g' < $< > debian/control
	touch $@

configure: configure.ac
	autoreconf -fi

build/config.status: configure
	dh_testdir
	
	-mkdir build
	cd build && PACKAGE_VERSION_SUFFIX=-686 ../configure $(drivers) \
		CFLAGS="$(CFLAGS)" \
		$(common_configure)

build-xen/config.status: configure
	dh_testdir
	
	-mkdir build-xen
	cd build-xen && PACKAGE_VERSION_SUFFIX=-xen-686 ../configure \
		CFLAGS="$(CFLAGS)" \
		$(common_configure) \
		--enable-platform=xen

build-dbg/config.status: configure
	dh_testdir
	
	-mkdir build-dbg
	cd build-dbg && PACKAGE_VERSION_SUFFIX=-686-dbg ../configure --enable-kdb $(drivers) \
		$(common_configure) \

build-xen-dbg/config.status: configure
	dh_testdir
	
	-mkdir build-xen-dbg
	cd build-xen-dbg && PACKAGE_VERSION_SUFFIX=-xen-686-dbg ../configure --enable-kdb \
		$(common_configure) \
		--enable-platform=xen

ifeq ($(filter stage1,$(DEB_BUILD_PROFILES)),)
build-arch: build/stamp build-dbg/stamp
else
build-arch: build/config.status
endif
build-indep: build-arch
build: build-arch build-indep

doc/mach.info: build/config.status
	dh_testdir
	$(MAKE) -C build ../doc/mach.info

build/stamp: build/config.status doc/mach.info
	dh_testdir
	
ifneq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
	$(MAKE) -C build
else
	$(MAKE) -C build check
endif
	touch $@

build-xen/stamp: build-xen/config.status doc/mach.info
	dh_testdir
	
ifneq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
	$(MAKE) -C build-xen
else
	$(MAKE) -C build-xen check
endif
	touch $@

build-dbg/stamp: build-dbg/config.status doc/mach.info
	dh_testdir
	
ifneq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
	$(MAKE) -C build-dbg
else
	$(MAKE) -C build-dbg check
endif
	touch $@

build-xen-dbg/stamp: build-xen-dbg/config.status doc/mach.info
	dh_testdir
	
ifneq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
	$(MAKE) -C build-xen-dbg
else
	$(MAKE) -C build-xen-dbg check
endif
	touch $@

clean:
	dh_testdir

	rm -f debian/control.stamp
	
	rm -f machine
	rm -rf build build-xen build-dbg build-xen-dbg $(D_UDEB) $(D_XEN_UDEB) $(D_XEN) $(D_DBG) $(D_XEN_DBG)
	
	# Clean up autogenerated cruft
	rm -rf autom4te.cache build-aux
	rm -f aclocal.m4 config.h.in configure INSTALL Makefile.in
	rm -f doc/mach.info* doc/stamp-vti doc/version.texi
	find -name '*~' -o -name '*.rej' -o -name '*.orig' | xargs rm -f

	rm -f debian/gnumach-image-*.preinst
	rm -f debian/gnumach-image-*.prerm
	rm -f debian/gnumach-image-*.postinst
	rm -f debian/gnumach-image-*.postrm
	
	dh_clean

install: build
	dh_testdir
	dh_testroot
	dh_prep -a
	-rm -rf $(D_DBG)
	dh_installdirs -a
	
ifeq ($(filter stage1,$(DEB_BUILD_PROFILES)),)
	$(MAKE) -C build install \
		DESTDIR=$(D)
	
	$(MAKE) -C build-dbg install-exec \
		DESTDIR=$(D_DBG) \
	
	mkdir -p $(D_UDEB)/boot
	cp $(D)/boot/gnumach $(D_UDEB)/boot/
	mv $(D)/boot/gnumach $(D)/boot/gnumach-$(VERSION)-$(MACHINE)
	mkdir -p $(D_XEN_UDEB)/boot
	mv $(D_DBG)/boot/gnumach $(D_DBG)/boot/gnumach-$(VERSION)-$(MACHINE)-dbg

ifeq ($(DEB_HOST_ARCH_OS),hurd)
	for script in preinst prerm postinst postrm ; do \
		for prefix in "" ; do \
			for suffix in "" -dbg ; do \
				sed -e "s/@VERSION@/$(VERSION)/g" \
				    -e "s/@RELEASE@/$(VERSION)$$prefix-$(MACHINE)$$suffix/g" \
				    debian/gnumach-image.$$script.in \
					> debian/gnumach-image-$(VERSION)$$prefix-$(MACHINE)$$suffix.$$script ; \
			done ; \
		done ; \
	done
endif
else
	$(MAKE) -C build install-data \
		DESTDIR=$(D)
endif

binary: binary-indep binary-arch

binary-indep: install debian/control.stamp
	dh_testdir
	dh_testroot
	
	dh_install -i --sourcedir=$(D)
	
	dh_installdocs -i
	dh_installchangelogs -i -k ChangeLog
	dh_installinfo -i
	
	dh_compress -i
	dh_fixperms -i
	dh_installdeb -i
	dh_gencontrol -i
	dh_md5sums -i
	dh_builddeb -i

binary-arch: install debian/control.stamp
	dh_testdir
	dh_testroot
	
	dh_install -a -N$(pkg_udeb) -N$(pkg_xen) -N$(pkg_xen_udeb) -N$(pkg_dbg) -N$(pkg_xen_dbg) --sourcedir=$(D)
	dh_install -p$(pkg) --sourcedir=$(D) boot
	dh_install -p$(pkg_xen) --sourcedir=$(D_XEN) boot
ifeq ($(DEB_HOST_ARCH_OS),hurd)
	dh_install -p$(pkg_udeb) --sourcedir=$(D_UDEB) boot
	dh_install -p$(pkg_xen_udeb) --sourcedir=$(D_XEN_UDEB) boot
endif
	dh_install -p$(pkg_dbg) --sourcedir=$(D_DBG) boot
	dh_install -p$(pkg_xen_dbg) --sourcedir=$(D_XEN_DBG) boot
	
	dh_installdocs -p$(pkg) README NEWS i386/README-Drivers
	dh_installdocs -p$(pkg_xen) README NEWS
	dh_installdocs -p$(pkg_dbg) README NEWS i386/README-Drivers
	dh_installdocs -p$(pkg_xen_dbg) README NEWS
	
	dh_installdocs -a
	dh_installchangelogs -a -k ChangeLog
	
	dh_link -a
	dh_strip -a -N$(pkg_dbg) -N$(pkg_xen_dbg)
	dh_compress -a -N$(pkg) -N$(pkg_udeb) -N$(pkg_xen) -N$(pkg_xen_udeb) -N$(pkg_dbg) -N$(pkg_xen_dbg)
ifeq ($(filter stage1,$(DEB_BUILD_PROFILES)),)
	dh_compress -p$(pkg) boot/gnumach-$(VERSION)-$(MACHINE)
ifeq ($(DEB_HOST_ARCH_OS),hurd)
	dh_compress -p$(pkg_udeb) boot/gnumach
endif
	dh_compress -p$(pkg_dbg) boot/gnumach-$(VERSION)-$(MACHINE)-dbg
endif
	dh_fixperms -a
	dh_installdeb -a
	dh_gencontrol -a
	dh_md5sums -a
	dh_builddeb -a

.PHONY: build build-arch build-indep clean
.PHONY: install binary binary-indep binary-arch