#!/usr/bin/make -f
# See debhelper(7) (uncomment to enable)
# output every command that modifies files on the build system.
#export DH_VERBOSE = 1

# see EXAMPLES in dpkg-buildflags(1) and read /usr/share/dpkg/*
DPKG_EXPORT_BUILDFLAGS = 1
include /usr/share/dpkg/default.mk

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

DEB_VERSION := $(shell dpkg-parsechangelog -S Version)
DEB_NOEPOCH_VERSION := $(shell echo $(DEB_VERSION) | cut -d: -f2-)
DEB_UPSTREAM_VERSION := $(shell echo $(DEB_NOEPOCH_VERSION) | sed 's/-[^-]*$$//')

export PETSC4PY_VERSION=$(DEB_UPSTREAM_VERSION)

# use only major.minor as PETSc version (not major.minor.patch)
PETSC_VERSION=$(shell echo $(DEB_UPSTREAM_VERSION) | awk 'BEGIN { FS="."}; {print $$1"."$$2 }')$(PETSC_EXT)
export PETSC_DIR_REAL=/usr/lib/petscdir/petsc$(PETSC_VERSION)/$(DEB_HOST_MULTIARCH)-real
export PETSC_DIR_COMPLEX=/usr/lib/petscdir/petsc$(PETSC_VERSION)/$(DEB_HOST_MULTIARCH)-complex
export PETSC64_DIR_REAL=/usr/lib/petscdir/petsc64-$(PETSC_VERSION)/$(DEB_HOST_MULTIARCH)-real
export PETSC64_DIR_COMPLEX=/usr/lib/petscdir/petsc64-$(PETSC_VERSION)/$(DEB_HOST_MULTIARCH)-complex

PY3VER_DEFAULT := $(shell py3versions -dv)
DOC_PYTHONPATH=$(shell PYBUILD_NAME=petsc4py_real$(PETSC_VERSION) pybuild --print {build_dir} --pyver $(PY3VER_DEFAULT))

# see FEATURE AREAS in dpkg-buildflags(1)
#export DEB_BUILD_MAINT_OPTIONS = hardening=+all

# see ENVIRONMENT in dpkg-buildflags(1)
# package maintainers to append CFLAGS
#export DEB_CFLAGS_MAINT_APPEND  = -Wall -pedantic
# package maintainers to append LDFLAGS
#export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed


# main packaging script based on dh7 syntax
%:
	dh $@ --with python3,sphinxdoc --buildsystem=pybuild

execute_after_dh_clean:
	rm -rf .eggs
	rm -f src/petsc4py/PETSc.c src/petsc4py/PETSc.h src/petsc4py/PETSc_api.h

# no need to build anything for arch-indep packages (doc, dummy package)
override_dh_auto_configure-indep: ;
override_dh_auto_build-indep: ;
override_dh_auto_install-indep: ;

override_dh_auto_configure-arch:
	PYBUILD_NAME=petsc4py_real$(PETSC_VERSION) PETSC_DIR=$(PETSC_DIR_REAL)  dh_auto_configure -ppython3-petsc4py-real$(PETSC_VERSION)
	PYBUILD_NAME=petsc4py_complex$(PETSC_VERSION) PETSC_DIR=$(PETSC_DIR_COMPLEX)  dh_auto_configure -ppython3-petsc4py-complex$(PETSC_VERSION)
	PYBUILD_NAME=petsc4py_64_real$(PETSC_VERSION) PETSC_DIR=$(PETSC64_DIR_REAL)  dh_auto_configure -ppython3-petsc4py-64-real$(PETSC_VERSION)
	PYBUILD_NAME=petsc4py_64_complex$(PETSC_VERSION) PETSC_DIR=$(PETSC64_DIR_COMPLEX)  dh_auto_configure -ppython3-petsc4py-64-complex$(PETSC_VERSION)

override_dh_auto_build-arch:
	PYBUILD_NAME=petsc4py_real$(PETSC_VERSION) PETSC_DIR=$(PETSC_DIR_REAL)  dh_auto_build -ppython3-petsc4py-real$(PETSC_VERSION) -- --build-args=--force
	PYBUILD_NAME=petsc4py_complex$(PETSC_VERSION) PETSC_DIR=$(PETSC_DIR_COMPLEX)  dh_auto_build -ppython3-petsc4py-complex$(PETSC_VERSION)
	PYBUILD_NAME=petsc4py_64_real$(PETSC_VERSION) PETSC_DIR=$(PETSC64_DIR_REAL)  dh_auto_build -ppython3-petsc4py-64-real$(PETSC_VERSION) -- --build-args=--force
	PYBUILD_NAME=petsc4py_64_complex$(PETSC_VERSION) PETSC_DIR=$(PETSC64_DIR_COMPLEX)  dh_auto_build -ppython3-petsc4py-64-complex$(PETSC_VERSION)
	# petsc4py embeds the deep PETSC_DIR path as RPATH in its library.
	# Swap it out for a standard path, or else dh_shlibdeps gets confused
	chrpath -d .pybuild/*python*/build/petsc4py/lib/PETSc*.so

override_dh_auto_install-arch:
	PYBUILD_NAME=petsc4py_real$(PETSC_VERSION) PETSC_DIR=$(PETSC_DIR_REAL)  dh_auto_install -ppython3-petsc4py-real$(PETSC_VERSION)
	PYBUILD_NAME=petsc4py_complex$(PETSC_VERSION) PETSC_DIR=$(PETSC_DIR_COMPLEX)  dh_auto_install -ppython3-petsc4py-complex$(PETSC_VERSION)
	PYBUILD_NAME=petsc4py_64_real$(PETSC_VERSION) PETSC_DIR=$(PETSC64_DIR_REAL)  dh_auto_install -ppython3-petsc4py-64-real$(PETSC_VERSION)
	PYBUILD_NAME=petsc4py_64_complex$(PETSC_VERSION) PETSC_DIR=$(PETSC64_DIR_COMPLEX)  dh_auto_install -ppython3-petsc4py-64-complex$(PETSC_VERSION)

execute_after_dh_auto_build-indep:
	PYTHONPATH=$(DOC_PYTHONPATH) http_proxy='127.0.0.1:9' sphinx-build -N -bhtml       docs/source build/html # HTML generator
	PYTHONPATH=$(DOC_PYTHONPATH) http_proxy='127.0.0.1:9' sphinx-build -N -bman        docs/source build/man # Manpage generator
	PYTHONPATH=$(DOC_PYTHONPATH) http_proxy='127.0.0.1:9' sphinx-build -N -btexinfo    docs/source build/texinfo # texinfo generator
	cd build/texinfo && make info

override_dh_python3-indep:
	dh_python3 -i
	dh_numpy3 -i

override_dh_python3-arch:
	dh_python3 -a
	dh_numpy3 -a
	mkdir -p debian/python3-petsc4py-real$(PETSC_VERSION)/$(PETSC_DIR_REAL)/lib debian/python3-petsc4py-complex$(PETSC_VERSION)/$(PETSC_DIR_COMPLEX)/lib
	mv debian/python3-petsc4py-real$(PETSC_VERSION)/usr/lib/python* debian/python3-petsc4py-real$(PETSC_VERSION)/$(PETSC_DIR_REAL)/lib
	mv debian/python3-petsc4py-complex$(PETSC_VERSION)/usr/lib/python* debian/python3-petsc4py-complex$(PETSC_VERSION)/$(PETSC_DIR_COMPLEX)/lib
	mkdir -p debian/python3-petsc4py-64-real$(PETSC_VERSION)/$(PETSC64_DIR_REAL)/lib debian/python3-petsc4py-64-complex$(PETSC_VERSION)/$(PETSC64_DIR_COMPLEX)/lib
	mv debian/python3-petsc4py-64-real$(PETSC_VERSION)/usr/lib/python* debian/python3-petsc4py-64-real$(PETSC_VERSION)/$(PETSC64_DIR_REAL)/lib
	mv debian/python3-petsc4py-64-complex$(PETSC_VERSION)/usr/lib/python* debian/python3-petsc4py-64-complex$(PETSC_VERSION)/$(PETSC64_DIR_COMPLEX)/lib

override_dh_compress:
	dh_compress -Xpdf

execute_after_dh_installdeb:
	grep __PETSC4PY_VERSION__ -ls debian/*/DEBIAN/* | xargs -r  sed -i -e 's/__PETSC4PY_VERSION__/$(PETSC4PY_VERSION)/'