#! /usr/bin/make -f

export DH_VERBOSE=1

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

export DEB_BUILD_MAINT_OPTIONS	 = hardening=+all

# Drop flags on old gfortran < 10
GF_FLAGS:= $(if $(filter $(shell readlink /usr/bin/gfortran), gfortran-9),, -fallow-invalid-boz -fallow-argument-mismatch)

export MPICHLIB_CPPFLAGS=$(shell dpkg-buildflags --get CPPFLAGS)
export MPICHLIB_CFLAGS=$(shell dpkg-buildflags --get CFLAGS)
export MPICHLIB_CXXFLAGS=$(shell dpkg-buildflags --get CXXFLAGS)
export MPICHLIB_FFLAGS=$(shell dpkg-buildflags --get FFLAGS) $(GF_FLAGS)
export MPICHLIB_FCFLAGS=$(shell dpkg-buildflags --get FFLAGS) -cpp $(GF_FLAGS)
export FFLAGS=$(shell dpkg-buildflags --get FFLAGS | sed -e 's/-g //') $(GF_FLAGS)
export F77=f77
export TZ=UTC+0
export V=1

FC:=$(shell basename $(shell readlink /etc/alternatives/f95))
export FC


# Keep old library naming scheme
export MPILIBNAME=mpich

NO_ROMIO_ARCH:= hurd-amd64 hurd-i386
NO_VERBS_ARCH:= hurd-amd64 hurd-i386
NO_SLURM_ARCH:= hurd-amd64 hurd-i386
NO_FABRIC_ARCH:= hurd-amd64 hurd-i386 powerpc sh4
NO_REAL128_ARCH:= armel armhf mipsel hppa m68k sh4
# Pick one as default, unlisted ones get CH3
CH4_UCX_ARCH:= $(shell sed -n -r '/^Build/,/^$$/s/.*libucx-dev *\[([^]]*)\].*/\1/p' debian/control)
CH4_OFI_ARCH:= mips64el alpha ppc64 sparc64

ifeq (,$(filter $(DEB_HOST_ARCH),$(NO_VERBS_ARCH)))
	VERBS := --with-ibverbs
endif
ifeq (,$(filter $(DEB_HOST_ARCH),$(NO_FABRIC_ARCH)))
	FABRIC := --with-libfabric=/usr
endif
ifneq (,$(filter $(DEB_HOST_ARCH),$(NO_REAL128_ARCH)))
	MPICHLIB_FCFLAGS:=$(MPICHLIB_FCFLAGS) -DNO_REAL128
endif
ifeq (,$(filter $(DEB_HOST_ARCH),$(NO_SLURM_ARCH)))
	SLURM := --with-slurm=/usr
endif

UCX:=
ifneq (,$(filter $(DEB_HOST_ARCH),$(CH4_UCX_ARCH)))
	DEVICE:= --with-device=ch4:ucx
	UCX:= --with-ucx=/usr
else ifneq (,$(filter $(DEB_HOST_ARCH),$(CH4_OFI_ARCH)))
	DEVICE:= --with-device=ch4:ofi
else
	DEVICE:= --with-device=ch3
endif

extra_flags += \
	$(VERBS) \
	$(FABRIC) \
	$(SLURM) \
	$(UCX) \
	$(DEVICE) \
	--with-pm=hydra \
	--with-hwloc-prefix=/usr \
	--with-wrapper-dl-type=none \
	--enable-shared \
	--without-yaksa \
	--prefix=/usr \
	--enable-fortran=all \
	--disable-rpath \
	--disable-wrapper-rpath \
	--sysconfdir=/etc/mpich \
	--libdir=\$${prefix}/lib/${DEB_HOST_MULTIARCH}/mpich/lib \
	--includedir=\$${prefix}/lib/${DEB_HOST_MULTIARCH}/mpich/include \
	--docdir=/usr/share/doc/mpich


AUTOGENERATED	:= $(patsubst %.in,%,$(wildcard debian/*.in))

%: %.in
	sed 's%@DEB_HOST_MULTIARCH@%$(DEB_HOST_MULTIARCH)%g' < $< > $@

%:
	dh $@

override_dh_autoreconf:
	dh_autoreconf ./autogen.sh

override_dh_auto_configure: $(AUTOGENERATED)
	dh_auto_configure -- $(extra_flags) CPPFLAGS="" CFLAGS="" CXXFLAGS="" FFLAGS="$(FFLAGS)" FCFLAGS="$(FFLAGS)" BASH_SHELL=/bin/bash
	dh_auto_configure --sourcedirectory src/pm/hydra -- --with-hwloc-prefix=/usr $(DEVICE) FFLAGS="$(FFLAGS)"
	sed -r -i 's/ +-ffile-prefix-map=[^ ]+//g' src/env/mpifort.bash src/include/mpichinfo.h src/packaging/pkgconfig/mpich.pc src/pm/hydra/hydra_config.h

execute_after_dh_auto_build-indep:
	$(MAKE) -f doc/Makefile.mk

override_dh_auto_install-arch:
	dh_auto_install -a
	dh_auto_install -a --sourcedirectory src/pm/hydra

	# Rename executables (ignore upstream symlinks)
	for i in mpicc mpicxx mpifort; do \
	  (cd debian/tmp/usr/bin/ && mv $$i $$i.mpich); \
	done
    # Rename manpages
    # TODO: manpages not shipped in beta ?
	#for i in mpicc mpicxx mpiexec mpif77 mpifort; do \
	#  (cd debian/tmp/usr/share/man/man1/ && mv $$i.1 $$i.mpich.1);\
	#done

	# Fix incorrect paths in /usr/bin/mpi{cc,cxx,fort}.mpich
	for fn in debian/tmp/usr/bin/mpicc.mpich debian/tmp/usr/bin/mpicxx.mpich \
		debian/tmp/usr/bin/mpifort.mpich; do \
		sed -i 's:$(CURDIR)/debian/tmp/::g' $$fn ;\
	done

execute_before_dh_auto_clean:
	dh_auto_clean --sourcedirectory doc/installguide
	dh_auto_clean --sourcedirectory doc/userguide

execute_after_dh_auto_clean:
	$(RM) $(AUTOGENERATED)

override_dh_installchangelogs:
	dh_installchangelogs README

# Some tests are failing on hurd-amd64 hurd-i386.
# Disable them, to be investiated later
# disable_test_archs = hurd-amd64 hurd-i386
disable_test_archs =
# ifneq (,$(filter $(DEB_HOST_ARCH),$(disable_test_archs)))
override_dh_auto_test:
	@echo "Don't fail on tests in experimental"
	- dh_auto_test || true
# endif

override_dh_gencontrol:
	dh_gencontrol -- -V'archlist:ucx=$(CH4_UCX_ARCH)'