#!/usr/bin/make -f

packagename		:= $(shell dpkg-parsechangelog | sed -nr '/^Source:/s/Source: (.*)/\1/p')
upstream_version	:= $(shell dpkg-parsechangelog | sed -nr '/^Version:/s/Version: (.*:)?(.*)-(.*)/\2/p')

DEB_HOST_ARCH		?= $(shell dpkg-architecture -qDEB_HOST_ARCH)
DEB_HOST_MULTIARCH	?= $(shell dpkg-architecture -qDEB_HOST_MULTIARCH)

MULTIARCH	?= yes
libdir		 = usr/lib$(if $(MULTIARCH),/$(DEB_HOST_MULTIARCH))

generated=$(shell ls debian/*.in | sed s/\.in$$//g)

%: %.in
	sed -r -e 's%_VERSION_%$(upstream_version)%g' \
	       -e 's%_LIBDIR_%$(libdir)%g' \
	       < $< > $@

%:
	dh $@

override_dh_auto_configure: $(generated) compare-copyright-license
	dh_auto_configure

override_dh_auto_clean:
	dh_auto_clean
	rm -rf LICENSE.txt
	rm -rf $(generated)

override_dh_install:
	sed -r -i etc/OpenCL/vendors/*.icd -e 's%usr/lib64%$(libdir)%'
	dh_install

override_dh_shlibdeps:
	dh_shlibdeps -l$(libdir)/OpenCL/vendors/intel

# Reformat the LICENSE to the format needed for debian/copyright.
LICENSE.txt: license.txt
	sed -e 's/\x92/\xe2\x80\x99/g; s/\x93/\xe2\x80\x9c/g; s/\x94/\xe2\x80\x9d/g; s/\s*$$//; s/^$$/./; s/^/ /;' $< > $@

# Compare the license in debian/copyright with the LICENSE shipped in the archive.
compare-copyright-license: LICENSE.txt
	sed -e '1,/^License: other-INTEL-OPENCLSDK$$/d; /^$$/,$$d; /^ .$$/d' debian/copyright \
	    > copyright.tmp
	sed -e '/^ .$$/d' LICENSE.txt > LICENSE.tmp
	diff -uw copyright.tmp LICENSE.tmp
	rm -f copyright.tmp LICENSE.tmp

############################################################################

SOURCE_RPM	 = intel_ocl_sdk_2012_x64.rpm
SOURCE_TGZ	 = intel_sdk_for_ocl_applications_2012_x64.tgz
RPM_VERSION	 = $(shell test -e $(SOURCE_RPM) && rpm -q -p $(SOURCE_RPM) | sed -e 's/intel-ocl-sdk-//; s/.x86_64//; s/-/./g;')

$(packagename)_$(RPM_VERSION).orig.tar.bz2: $(SOURCE_RPM) license.txt
	mkdir $(packagename)-$(RPM_VERSION).orig
	# Unpack files, clear executable attribute from libs
	cd $(packagename)-$(RPM_VERSION).orig \
	   && cp ../license.txt . \
	   && rpm2cpio ../$(SOURCE_RPM) | cpio -idmv \
	   && find usr/lib64 -name '*.so' -exec chmod -x {} +
	# Create the tarball
	tar -cjf $@\
	    --owner=root --group=src \
	    $(packagename)-$(RPM_VERSION).orig
	# Cleanup
	rm -rf $(packagename)-$(RPM_VERSION).orig

.PHONY: orig rpm prepare version-check

version-check:
	test $(RPM_VERSION) = $(upstream_version)

orig: version-check $(packagename)_$(RPM_VERSION).orig.tar.bz2

rpm: $(SOURCE_TGZ)
	tar xzf $<

$(packagename)_$(upstream_version).orig: $(packagename)_$(upstream_version).orig.tar.bz2
	tar xjf $(packagename)_$(upstream_version).orig.tar.bz2

$(packagename)_$(upstream_version): $(packagename)_$(upstream_version).orig
	mv -T $(packagename)-$(upstream_version).orig $(packagename)-$(upstream_version)
	cp -rP debian $(packagename)-$(upstream_version)

prepare: version-check $(packagename)_$(upstream_version)