#!/usr/bin/make -f

export DH_VERBOSE=1


# The magic debhelper rule:
%:
	dh $@ --buildsystem cmake 

include /usr/share/mpi-default-dev/debian_defaults
MPI:=$(ARCH_DEFAULT_MPI_IMPL)

DEB_HOST_MULTIARCH ?= $(shell dpkg-architecture -qDEB_HOST_MULTIARCH)
TMPDIR=$(CURDIR)/debian/tmp
LIBDIR:=/usr/lib/${DEB_HOST_MULTIARCH}
PY3DEST:=debian/python3-xdmf
PY3:=$(shell py3versions -d)
PY3SUPPORTED:=$(shell py3versions -s)

CXXFLAGS:=$(shell dpkg-buildflags --get CXXFLAGS) -fPIC

AUTOGENERATED:= python3-xdmf.install libxdmf-dev.install libxdmf3.install \
		libxdmf3.links libxdmf-dev.links

build_types:= mpi serial
BUILD_DIRS := $(foreach B,$(build_types),$(foreach P,$(PY3SUPPORTED),debian/build-$B-$P))

CMAKE_FLAGS:= -DXDMF_SYSTEM_ZLIB=ON \
		-DXDMF_SYSTEM_LIBXML2=ON \
		-DXDMF_USE_BZIP2=ON \
		-DXDMF_USE_GZIP=ON \
		-DXDMF_BUILD_FORTRAN=ON  \
		-DXDMF_SWIG_FLAGS=-py3 \
		-DXDMF_SYSTEM_HDF5=ON \
		-DCMAKE_SKIP_RPATH=ON \
		-DXDMF_BUILD_UTILS=ON \
		-DCMAKE_INSTALL_PREFIX=/usr \
		-DXDMF_WRAP_PYTHON=ON \
		-DXDMF_REGENERATE_WRAPPERS=ON \
		-DGZSTREAM_LIBRARY=$(LIBDIR)/libgzstream.so \
		-DBUILD_SHARED_LIBS=TRUE 

override_dh_auto_configure:
	for f in ${AUTOGENERATED} ; do \
		cat debian/$$f.in |  \
		sed -e 's%@PY3@%${PY3}%g' | \
		sed -e 's%@MPI@%${MPI}%g' | \
		sed -e 's%@MULTIARCH@%${DEB_HOST_MULTIARCH}%g'  \
		> debian/$$f ; \
		done
	mkdir -p $(BUILD_DIRS)
	for p in $(PY3SUPPORTED) ; do \
		l=`echo $$p | sed -e 's/python3.7/python3.7m/' ` ; \
		(cd debian/build-serial-$$p &&  \
			cmake ../.. \
				$(CMAKE_FLAGS) \
		                -DPYTHON_INCLUDE_PATH=/usr/include/$$p \
                		-DPYTHON_LIBRARY=$(LIBDIR)/lib$$l.so \
				-DXDMF_BUILD_MPI=OFF -DXDMF_SYSTEM_HDF5_IS_PARALLEL=OFF \
				-DHDF5_ROOT=$(LIBDIR)/hdf5/serial ) ; \
		(cd debian/build-mpi-$$p && \
			cmake ../.. \
				$(CMAKE_FLAGS) \
		               -DPYTHON_INCLUDE_PATH=/usr/include/$$p \
               			-DPYTHON_LIBRARY=$(LIBDIR)/lib$$l.so \
				-DXDMF_BUILD_MPI=ON  -DXDMF_SYSTEM_HDF5_IS_PARALLEL=ON \
				-DHDF5_ROOT=$(LIBDIR)/hdf5/$(MPI) ) ; \
		done

override_dh_auto_build:
	for p in $(BUILD_DIRS) ; do \
		$(MAKE) -C $$p ; done

override_dh_auto_test:
	@echo "Ignore; no tests present"

override_dh_auto_install:
	# Move needed for some reason
	for p in $(BUILD_DIRS) ; do \
		mkdir -p $$p/lib ; \
		cp $$p/*.py $$p/lib ; \
		done
	# Assemble something workable from the 4 install dirs.
	for p in $(PY3SUPPORTED) ; do \
		$(MAKE) -C debian/build-mpi-$$p install DESTDIR=$(TMPDIR) ; \
		mkdir -p 				$(PY3DEST)/usr/lib/$$p/dist-packages/xdmf/NoMpi ; \
		touch 				$(PY3DEST)/usr/lib/$$p/dist-packages/xdmf/__init__.py ; \
		cp debian/build-serial-$$p/Xdmf.py  	$(PY3DEST)/usr/lib/$$p/dist-packages/xdmf ; \
		cp debian/build-serial-$$p/XdmfUtils.py $(PY3DEST)/usr/lib/$$p/dist-packages/xdmf ; \
		cp debian/build-serial-$$p/XdmfCore.py  $(PY3DEST)/usr/lib/$$p/dist-packages/xdmf ; \
		cp debian/build-serial-$$p/lib/__*.so   $(PY3DEST)/usr/lib/$$p/dist-packages/xdmf/NoMpi ; \
		cp debian/build-mpi-$$p/lib/__*.so   $(PY3DEST)/usr/lib/$$p/dist-packages/xdmf ; \
		done
	# Remove build path and kernel version, adjust path to uname,
	# and remove sytem processor and number of processors to make
	# build reproducible
	sed -i -e "s,$(CURDIR),BUILDDIR,g" \
		-e "s,/usr/bin/uname,/bin/uname,g" \
		-e "s,$(shell uname -r),,g" \
		-e "/XDMF_CMAKE_SYSTEM_PROCESSOR/d" \
		-e "/XDMF_CMAKE_HOST_SYSTEM_PROCESSOR/d" \
		-e "/XDMF_MPIEXEC_MAX_NUMPROCS/d" \
		debian/tmp/$(LIBDIR)/cmake/Xdmf/XdmfConfig.cmake
 
override_dh_auto_fixperms:
	dh_auto_fixperms
	find debian/libxdmf-dev -type f -exec chmod 644 {} \;

override_dh_auto_clean:
	dh_auto_clean
	rm -f $(patsubst %, debian/%, ${AUTOGENERATED})
	rm -rf $(BUILD_DIRS)