#!/usr/bin/make -f
#
# build script for GROMACS

# export DH_VERBOSE=1

PACKAGE := gromacs

# OpenMPI is only supported on a subset of architectures at this time.
# This list should remain synced with the Build-Depends and the Architecture
# line of gromacs-openmpi in debian/control.

OPENMPI_ARCH    = alpha amd64 armel armhf i386 ia64 powerpc powerpcspe ppc64 sparc sparc64 kfreebsd-i386 kfreebsd-amd64 hurd-i386
DEB_HOST_ARCH  ?= $(shell dpkg-architecture -qDEB_HOST_ARCH)

# add hardening flags, using hardening-wrapper
export DEB_BUILD_HARDENING=1

CFLAGS =
ifneq (,$(findstring debug,$(DEB_BUILD_OPTIONS)))
	CFLAGS += -g -Wall
endif
ifneq (,$(findstring noopt,$(DEB_BUILD_OPTIONS)))
	CFLAGS += -O0
endif

LDFLAGS += -Wl,--as-needed

COMMON_CONFIG_PARAMS = \
	$(CURDIR) \
	-DCMAKE_VERBOSE_MAKEFILE=ON \
	-DCMAKE_INSTALL_PREFIX="/usr" \
	-DCMAKE_EXE_LINKER_FLAGS="$(LDFLAGS)" \
	-DCMAKE_SKIP_RPATH=TRUE \
	-DGMX_X11=ON

ifneq ($(CFLAGS),)
	COMMON_CONFIG_PARAMS += -DCMAKE_C_FLAGS="$(CFLAGS)"
endif

# Force compiler to use no more than SSE2 CPU optimizations, for broadest
# compatibility.  For local compilations, pass DEB_BUILD_OPTIONS=cpuopt
# for automatic detection of the best available option.  Planned for an
# overhaul in GROMACS 5.0 with proper runtime detection.  kfreebsd-* doesn't
# yet support the higher extensions anyhow, no special casing needed.
ifneq (,$(findstring cpuopt,$(DEB_BUILD_OPTIONS)))
ifneq (,$(findstring $(DEB_HOST_ARCH),i386 amd64))
		COMMON_CONFIG_PARAMS += -DGMX_CPU_ACCELERATION=SSE2
endif
endif
	

# Include "gpu" in DEB_BUILD_OPTIONS to build GPU-accelerated binaries as well.
# See INSTALL-GPU.  This build option is not tested, please send comments.
# You must have OpenMM development headers (not packaged) and "nvidia-cuda-dev"
# installed!
ifneq (,$(findstring gpu,$(DEB_BUILD_OPTIONS)))
	COMMON_CONFIG_PARAMS += -DGMX_OPENMM=ON
endif

MPICH_CONFIG_PARAMS = \
	-DGMX_MPI=ON \
	-DGMX_X11=OFF \
	-DGMX_DEFAULT_SUFFIX=FALSE

OPENMPI_CONFIG_PARAMS = \
	-DGMX_MPI=ON \
	-DGMX_DEFAULT_SUFFIX=FALSE \
	-DGMX_X11=OFF \
	-DCMAKE_EXE_LINKER_FLAGS="-L/usr/lib/openmpi/lib $(LDFLAGS)"

# optional parallel build
ifneq (,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
	NUMJOBS = $(patsubst parallel=%,%,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
	MAKE += -j$(NUMJOBS)
endif

configure: configure-stamp
configure-stamp:
	dh_testdir
	(mkdir -p build/basic; cd build/basic; cmake $(COMMON_CONFIG_PARAMS) -DGMX_MPI=OFF)
	(mkdir -p build/basic-dp; cd build/basic-dp; cmake $(COMMON_CONFIG_PARAMS) -DGMX_MPI=OFF -DGMX_DOUBLE=ON)
	(mkdir -p build/mpich; cd build/mpich; CC=/usr/bin/mpicc.mpich cmake \
	$(COMMON_CONFIG_PARAMS) $(MPICH_CONFIG_PARAMS) -DGMX_BINARY_SUFFIX="_mpi.mpich" -DGMX_LIBS_SUFFIX="_mpi.mpich")
	(mkdir -p build/mpich-dp; cd build/mpich-dp; CC=/usr/bin/mpicc.mpich cmake \
	$(COMMON_CONFIG_PARAMS) $(MPICH_CONFIG_PARAMS) -DGMX_DOUBLE=ON -DGMX_BINARY_SUFFIX="_mpi_d.mpich" -DGMX_LIBS_SUFFIX="_mpi_d.mpich")
ifneq (,$(findstring $(DEB_HOST_ARCH),$(OPENMPI_ARCH)))
	(mkdir -p build/openmpi; cd build/openmpi; CC=/usr/bin/mpicc.openmpi cmake \
	$(COMMON_CONFIG_PARAMS) $(OPENMPI_CONFIG_PARAMS) -DGMX_BINARY_SUFFIX="_mpi.openmpi" -DGMX_LIBS_SUFFIX="_mpi.openmpi")
	(mkdir -p build/openmpi-dp; cd build/openmpi-dp; CC=/usr/bin/mpicc.openmpi cmake \
	$(COMMON_CONFIG_PARAMS) $(OPENMPI_CONFIG_PARAMS) -DGMX_DOUBLE=ON -DGMX_BINARY_SUFFIX="_mpi_d.openmpi" -DGMX_LIBS_SUFFIX="_mpi_d.openmpi")
endif
	touch $@


build: configure-stamp build-basic build-mpich build-openmpi

build-arch: build
build-indep: build

build-basic: configure-stamp
	dh_testdir
	$(MAKE) -C build/basic
	$(MAKE) -C build/basic-dp
	touch $@

build-mpich: configure-stamp
	dh_testdir
	$(MAKE) -C build/mpich mdrun 
	$(MAKE) -C build/mpich-dp mdrun
	sed -e 's/#MPIABBR#/mpich/g' -e 's/#MPIPROG#/MPICH2/g' \
	    < debian/gromacs-parallel.README.Debian.in \
	    > debian/gromacs-mpich.README.Debian
	touch $@
	
build-openmpi: configure-stamp
	dh_testdir
ifneq (,$(findstring $(DEB_HOST_ARCH),$(OPENMPI_ARCH)))
	$(MAKE) -C build/openmpi mdrun
	$(MAKE) -C build/openmpi-dp mdrun
	sed -e 's/#MPIABBR#/openmpi/g' -e 's/#MPIPROG#/OpenMPI/g' \
	    < debian/gromacs-parallel.README.Debian.in \
	    > debian/gromacs-openmpi.README.Debian
endif
	touch $@	


clean: 
	dh_testdir
	dh_testroot
	rm -rf build
	dh_clean build-basic build-mpich build-openmpi configure-stamp \
	         debian/gromacs-mpich.README.Debian debian/gromacs-openmpi.README.Debian


install: build install-basic install-mpich install-openmpi
	dh_testdir
	dh_testroot
	dh_prep -pgromacs-data -pgromacs-dev
	
	dh_installdirs -pgromacs-data
	mv $(CURDIR)/debian/gromacs/usr/share/gromacs/top \
	   $(CURDIR)/debian/gromacs-data/usr/share/gromacs
	mv $(CURDIR)/debian/gromacs/usr/share/gromacs/html \
	   $(CURDIR)/debian/gromacs-data/usr/share/doc/gromacs
	mv $(CURDIR)/debian/gromacs/usr/share/man \
	   $(CURDIR)/debian/gromacs-data/usr/share/man
	# some of the default installation directories for documentation and
	# example shell scripts are not FHS-friendly; move them appropriately
	mv $(CURDIR)/debian/gromacs/usr/bin/GMXRC* \
	   $(CURDIR)/debian/gromacs/usr/bin/completion* \
	   $(CURDIR)/debian/gromacs-data/usr/share/gromacs/shell-specific
	chmod 644 $(CURDIR)/debian/gromacs-data/usr/share/gromacs/shell-specific/*
	dh_link -pgromacs-data usr/share/doc/gromacs/html usr/share/doc/gromacs-data/html
	dh_link -pgromacs-data usr/share/doc/gromacs/html usr/share/doc/gromacs-dev/html
	# this name is also give in documentation
	dh_link -pgromacs-data usr/share/doc/gromacs-data/copyright usr/share/doc/gromacs-data/COPYING
	# one lintian warning is overridden:
	# - script-not-executable: demo scripts outside of $PATH
	dh_lintian -pgromacs-data
	# rename a pair of Perl scripts to drop the .pl extension (Policy 10.4)
	mv $(CURDIR)/debian/gromacs/usr/bin/demux.pl     $(CURDIR)/debian/gromacs/usr/bin/demux
	mv $(CURDIR)/debian/gromacs/usr/bin/xplor2gmx.pl $(CURDIR)/debian/gromacs/usr/bin/xplor2gmx

	dh_installdirs -pgromacs-dev
	mv $(CURDIR)/debian/gromacs/usr/include $(CURDIR)/debian/gromacs-dev/usr/include
	# catch normal libraries plus all applicable MPI variants
	mv $(CURDIR)/debian/gromacs/usr/lib/*.so $(CURDIR)/debian/gromacs/usr/lib/pkgconfig $(CURDIR)/debian/gromacs-dev/usr/lib
	# arguably these should be in -openmpi-dev packages or the like; they'd be so tiny that
	# it's barely worth the effort, and keeping library symlinks in the -openmpi/-mpich
	# packages helps avoid a potential policy violation; disabling these moves
#	mv $(CURDIR)/debian/gromacs-mpich/usr/lib/*.so $(CURDIR)/debian/gromacs-dev/usr/lib
#ifneq (,$(findstring $(DEB_HOST_ARCH),$(OPENMPI_ARCH)))
#	mv $(CURDIR)/debian/gromacs-openmpi/usr/lib/*.so $(CURDIR)/debian/gromacs-dev/usr/lib
#endif
	mv $(CURDIR)/debian/gromacs/usr/share/gromacs/template $(CURDIR)/debian/gromacs-dev/usr/share/gromacs/template
	# remaining documentation catch-all
	mv $(CURDIR)/debian/gromacs/usr/share/gromacs/* $(CURDIR)/debian/gromacs-data/usr/share/doc/gromacs
	-rmdir $(CURDIR)/debian/gromacs/usr/share/gromacs


install-basic: build
	dh_testdir
	dh_testroot
	dh_prep -pgromacs
	dh_installdirs -pgromacs
	$(MAKE) -C build/basic install DESTDIR=$(CURDIR)/debian/gromacs
	$(MAKE) -C build/basic-dp install DESTDIR=$(CURDIR)/debian/gromacs
	rm -f $(CURDIR)/debian/gromacs/usr/share/man/man1/*_d.1
	dh_installman -pgromacs debian/man/g_*.1
	for manpage in $(CURDIR)/debian/gromacs/usr/share/man/man1/*.1; do \
		dh_link -pgromacs usr/share/man/man1/`basename $${manpage}` usr/share/man/man1/`basename $${manpage} .1`_d.1 ; \
	done
	# man pages for a pair of Perl scripts are installed *after* the _d duplication,
	# as they have no double-precision variants.
	dh_installman -pgromacs debian/man/demux.1 debian/man/xplor2gmx.1
	# this program is currently broken - keep it from shipping until fixed
	rm $(CURDIR)/debian/gromacs/usr/bin/g_pme_error $(CURDIR)/debian/gromacs/usr/bin/g_pme_error_d
	# two lintian warnings are overridden:
	# - package-name-doesnt-match-sonames: the libraries are private to
	#   GROMACS, and it's unlikely that any new package will start using
	#   them; therefore, separate lib packages would just be bloat.
	#   This is also overridden for the -mpich and -openmpi packages.
	# - shlib-with-executable-stack: it's a side effect of the ASM inner
	#   loops (i386/amd64 only)
	dh_lintian -pgromacs

install-mpich: build
	dh_testdir
	dh_testroot
	dh_prep -pgromacs-mpich
	dh_installdirs -pgromacs-mpich
	$(MAKE) -C build/mpich install-mdrun DESTDIR=$(CURDIR)/debian/gromacs-mpich
	$(MAKE) -C build/mpich-dp install-mdrun DESTDIR=$(CURDIR)/debian/gromacs-mpich
	# temporary workaround for RPATH issue in mpich3
	chrpath -d $(CURDIR)/debian/gromacs-mpich/usr/bin/* $(CURDIR)/debian/gromacs-mpich/usr/lib/*
	dh_installman -pgromacs-mpich debian/man/mdrun_mpi.mpich.1
	dh_link -pgromacs-mpich usr/share/man/man1/mdrun_mpi.mpich.1.gz usr/share/man/man1/mdrun_mpi_d.mpich.1.gz
	dh_lintian -pgromacs-mpich

install-openmpi: build
	dh_testdir
	dh_testroot
	dh_prep -pgromacs-openmpi
ifneq (,$(findstring $(DEB_HOST_ARCH),$(OPENMPI_ARCH)))
	dh_installdirs -pgromacs-openmpi
	$(MAKE) -C build/openmpi install-mdrun DESTDIR=$(CURDIR)/debian/gromacs-openmpi
	$(MAKE) -C build/openmpi-dp install-mdrun DESTDIR=$(CURDIR)/debian/gromacs-openmpi
	dh_installman -pgromacs-openmpi debian/man/mdrun_mpi.openmpi.1
	dh_link -pgromacs-openmpi usr/share/man/man1/mdrun_mpi.openmpi.1.gz usr/share/man/man1/mdrun_mpi_d.openmpi.1.gz
	dh_lintian -pgromacs-openmpi
endif

binary-indep: build install
	dh_testdir
	dh_testroot
	dh_installchangelogs -i
	dh_installdocs -pgromacs-data
	dh_compress -i
	dh_fixperms -i
	dh_installdeb -i
	dh_gencontrol -i
	dh_md5sums -i
	dh_builddeb -i

binary-arch: build install
	dh_testdir -s
	dh_testroot -s
	dh_installchangelogs -s
	dh_installdocs -s
	dh_strip -A
	dh_link -s
	dh_compress -s
	dh_fixperms -s
	dh_makeshlibs -s
	dh_shlibdeps -pgromacs -L gromacs -l debian/gromacs/usr/lib
	dh_shlibdeps -pgromacs-mpich -L gromacs-mpich -l debian/gromacs-mpich/usr/lib
ifneq (,$(findstring $(DEB_HOST_ARCH),$(OPENMPI_ARCH)))
	dh_shlibdeps -pgromacs-openmpi -L gromacs-openmpi -l debian/gromacs-openmpi/usr/lib
endif
	dh_gencontrol -s
	dh_installdeb -s
	dh_md5sums -s
	dh_builddeb -s

binary: binary-indep binary-arch

.PHONY: binary binary-arch binary-indep build clean install install-basic install-mpich install-openmpi

# Because multiple versions of the same programs are created using the same source tree,
# the various build-* targets can't be compiled simultaneously.
# Passing down -j# to child make processes remains unaffected.
.NOTPARALLEL:
