#!/usr/bin/make -f

SHELL := sh -e
DEB_HOST_ARCH := $(shell dpkg-architecture -qDEB_HOST_ARCH)
DEB_BUILD_ARCH := $(shell dpkg-architecture -qDEB_BUILD_ARCH)
SOURCE := $(shell dpkg-parsechangelog | sed -ne 's,^Source: *\(.*\)$$,\1,p')
VERSION_DEBIAN := $(shell dpkg-parsechangelog | sed -ne 's,^Version: *\(.*\)$$,\1,p')
VERSION := $(shell echo "$(VERSION_DEBIAN)" | sed -e 's,^[^:]*:,,' -e 's,-[^-]*$$,,')
 
BUILD_DIR = debian/build
STAMPS_DIR = debian/stamps

ifneq (,$(findstring debug,$(DEB_BUILD_OPTIONS)))
	CONFIG_DEBUG = y
endif
ifneq (,$(findstring thumb,$(DEB_BUILD_OPTIONS)))
	THUMB := -mthumb
endif

ifneq (,$(findstring parallel,$(DEB_BUILD_OPTIONS)))
    PARALLEL_JOBS := $(shell echo $(DEB_BUILD_OPTIONS) | \
        sed -e 's/.*parallel=\([0-9]\+\).*/\1/')
    ifeq ($(DEB_BUILD_OPTIONS),$(PARALLEL_JOBS))
        PARALLEL_JOBS := $(shell if [ -f /proc/cpuinfo ]; \
            then echo `cat /proc/cpuinfo | grep 'processor' | wc -l`; \
            else echo 1; fi)
    endif
    NJOBS := -j$(PARALLEL_JOBS)
endif

source: $(STAMPS_DIR)/source

$(STAMPS_DIR)/source: SOURCE_FILES = $(filter-out debian, $(wildcard * .[^.]*))
$(STAMPS_DIR)/source: DIR = $(BUILD_DIR)/source
$(STAMPS_DIR)/source:
	dh_testdir
	rm -rf '$(DIR)'
	mkdir -p $(STAMPS_DIR) '$(DIR)'
	cp -al $(SOURCE_FILES) '$(DIR)'
	cd $(DIR); QUILT_PATCHES=$(CURDIR)/debian/patches quilt --quiltrc /dev/null push -a || test $$? = 2
	touch $@

setup: $(STAMPS_DIR)/setup_busybox $(STAMPS_DIR)/setup_busybox-althist

$(STAMPS_DIR)/setup_%: SOURCE_DIR=$(BUILD_DIR)/source
$(STAMPS_DIR)/setup_%: DIR=$(BUILD_DIR)/build_$*
$(STAMPS_DIR)/setup_%: $(STAMPS_DIR)/source
	dh_testdir
	rm -rf '$(DIR)'
	cp -al '$(SOURCE_DIR)' '$(DIR)'
	cp debian/config/config.busybox '$(DIR)'/.config
	if test "$*" == "busybox-althist"; then \
		sed -i "s/CONFIG_FEATURE_EDITING_SAVE_ON_EXIT=y/# CONFIG_FEATURE_EDITING_SAVE_ON_EXIT is not set/" '$(DIR)'/.config; fi
	make -C '$(DIR)' oldconfig
	touch $@

build: $(STAMPS_DIR)/build_busybox $(STAMPS_DIR)/build_busybox-althist

$(STAMPS_DIR)/build_%: DIR=$(BUILD_DIR)/build_$*
$(STAMPS_DIR)/build_%: $(STAMPS_DIR)/setup_%
	dh_testdir
	make -C '$(DIR)' $(NJOBS) THUMB=$(THUMB) busybox docs/busybox.1 BB_EXTRA_VERSION="$(shell lsb_release -is) $(VERSION_DEBIAN)"
	make -C '$(DIR)' busybox.links
	touch $@

$(BUILD_DIR) $(STAMPS_DIR):
	@[ -d $@ ] || mkdir $@

maintainerclean:
	rm -rf $(filter-out .svn debian, $(wildcard * .[^.]*))

clean:
	dh_testdir
	rm -rf $(BUILD_DIR) $(STAMPS_DIR)
	dh_clean
	rm -rf debian/busybox-power-althistory*

binary-indep:

binary-arch: binary-arch_busybox binary-arch_busybox-althist binary-arch_all

binary-arch_busybox: DIR = $(BUILD_DIR)/build_busybox
binary-arch_busybox: DH_OPTIONS = -pbusybox-power
binary-arch_busybox: $(STAMPS_DIR)/build_busybox
	dh_testdir
	dh_testroot
	install -D -m644 debian/scripts/applets debian/busybox-power/opt/busybox-power/applets
	install -D -m644 debian/scripts/functions debian/busybox-power/opt/busybox-power/functions
	install -D -m755 $(DIR)/busybox_unstripped debian/busybox-power/opt/busybox-power/busybox.power

binary-arch_busybox-althist: DIR = $(BUILD_DIR)/build_busybox-althist
binary-arch_busybox-althist: DH_OPTIONS = -pbusybox-power-althist
binary-arch_busybox-althist: $(STAMPS_DIR)/build_busybox-althist
	dh_testdir
	dh_testroot
	# busybox-power-althist == busybox-power, only BusyBox' .config differs
	# Duplicate the maintainer scripts etc. into busybox-power-althist
	for f in debian/busybox-power.*; do cp -p "$$f" "$${f/busybox-power/busybox-power-althist}"; done
	install -D -m644 debian/scripts/applets debian/busybox-power-althist/opt/busybox-power/applets
	install -D -m644 debian/scripts/functions debian/busybox-power-althist/opt/busybox-power/functions
	install -D -m755 $(DIR)/busybox_unstripped debian/busybox-power-althist/opt/busybox-power/busybox.power

binary-arch_all:
	dh_installdirs
	dh_installdocs
	dh_installchangelogs
	dh_strip
	dh_compress

	dh_link
	dh_fixperms
	dh_installdeb

	dh_shlibdeps
	dh_gencontrol
	dh_md5sums
	dh_builddeb

binary: binary-indep binary-arch

DIR_ORIG = ../orig/$(SOURCE)-$(VERSION)
TAR_ORIG_NAME = $(SOURCE)_$(VERSION).orig.tar.gz
TAR_ORIG = $(firstword $(wildcard ../$(TAR_ORIG_NAME)) $(wildcard ../orig/$(TAR_ORIG_NAME)))

orig: $(DIR_ORIG)
	rsync --delete --exclude debian --exclude .svk --exclude .svn --link-dest=$(DIR_ORIG)/ -a $(DIR_ORIG)/ .

$(DIR_ORIG):
ifeq ($(TAR_ORIG),)
	$(error Cannot find orig tarball $(TAR_ORIG_NAME))
else
	mkdir -p ../orig
	tar -C ../orig -xzf $(TAR_ORIG)
endif