#!/usr/bin/make -f
#
# build script for GROMACS
#
# Including "parallel" in DEB_BUILD_OPTIONS will increase the make concurrency
# to 4, which should speed builds on multi-core or multi-CPU systems.

# export DH_VERBOSE=1

# debhelper compatibility version set to 5 in debian/compat

PACKAGE := gromacs
include /usr/share/dpatch/dpatch.make

DEB_HOST_GNU_TYPE   ?= $(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
DEB_BUILD_GNU_TYPE  ?= $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)

# 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 i386 ia64 powerpc kfreebsd-i386 kfreebsd-amd64 hurd-i386
DEB_HOST_ARCH  ?= $(shell dpkg-architecture -qDEB_HOST_ARCH)

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

COMMON_CONFIG_PARAMS = \
	--host=$(DEB_HOST_GNU_TYPE) \
	--build=$(DEB_BUILD_GNU_TYPE) \
	--prefix=/usr \
	--exec_prefix=\$${prefix} \
	--datadir=\$${prefix}/share \
	--mandir=\$${prefix}/share/man \
	--infodir=\$${prefix}/share/info \
	--enable-shared

ifdef CFLAGS
	COMMON_CONFIG_PARAMS += CFLAGS="$(CFLAGS)"
endif

LAM_CONFIG_PARAMS = \
	--enable-mpi \
	--disable-nice \
	--without-x \
	LIBSUFFIX_ADD=lam \
	MPICC=/usr/bin/mpicc.lam \
	CC=/usr/bin/mpicc.lam

MPICH_CONFIG_PARAMS = \
	--enable-mpi \
	--disable-nice \
	--without-x \
	LIBSUFFIX_ADD=mpich \
	MPICC=/usr/bin/mpicc.mpich \
	CC=/usr/bin/mpicc.mpich

OPENMPI_CONFIG_PARAMS = \
	--enable-mpi \
	--disable-nice \
	--disable-fortran \
	--without-x \
	LIBSUFFIX_ADD=openmpi \
	MPICC=/usr/bin/mpicc.openmpi \
	CC=/usr/bin/mpicc.openmpi

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

# gfortran transition: configure script looks for f77/g77 binaries, not f95/g95/gfortran
# FORTRAN inner loops are used on Alpha only
ifneq (,$(findstring alpha,$(DEB_HOST_GNU_TYPE)))
	export F77=/usr/bin/gfortran
endif

configure: patch-stamp configure-stamp
configure-stamp: patch-stamp
	dh_testdir
	# patch 04_autoconf_mpisuffix changes configure.ac, requiring a fresh autotools pass
	aclocal && \
	autoconf && \
	automake1.10
	# -dp is the place for double-precision builds
	(mkdir -p build/basic; cd build/basic; ../../configure $(COMMON_CONFIG_PARAMS))
	(mkdir -p build/basic-dp; cd build/basic-dp; ../../configure $(COMMON_CONFIG_PARAMS) --enable-double)
	(mkdir -p build/lam; cd build/lam; ../../configure $(COMMON_CONFIG_PARAMS) $(LAM_CONFIG_PARAMS) --program-suffix=_mpi.lam)
	(mkdir -p build/lam-dp; cd build/lam-dp; ../../configure $(COMMON_CONFIG_PARAMS) $(LAM_CONFIG_PARAMS) --program-suffix=_mpi_d.lam --enable-double)
	(mkdir -p build/mpich; cd build/mpich; ../../configure $(COMMON_CONFIG_PARAMS) $(MPICH_CONFIG_PARAMS) --program-suffix=_mpi.mpich)
	(mkdir -p build/mpich-dp; cd build/mpich-dp; ../../configure $(COMMON_CONFIG_PARAMS) $(MPICH_CONFIG_PARAMS) --program-suffix=_mpi_d.mpich --enable-double)
ifneq (,$(findstring $(DEB_HOST_ARCH),$(OPENMPI_ARCH)))
	(mkdir -p build/openmpi; cd build/openmpi; ../../configure $(COMMON_CONFIG_PARAMS) $(OPENMPI_CONFIG_PARAMS) --program-suffix=_mpi.openmpi)
	(mkdir -p build/openmpi-dp; cd build/openmpi-dp; ../../configure $(COMMON_CONFIG_PARAMS) $(OPENMPI_CONFIG_PARAMS) --program-suffix=_mpi_d.openmpi --enable-double)
endif
	touch $@


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

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

build-lam: configure-stamp
	dh_testdir
	$(MAKE) -C build/lam mdrun
	$(MAKE) -C build/lam-dp mdrun
	sed -e 's/#MPIABBR#/lam/g' -e 's/#MPIPROG#/LAM-MPI/g' \
	    < debian/gromacs-parallel.README.Debian.in \
	    > debian/gromacs-lam.README.Debian
	touch $@
	
build-mpich: configure-stamp
	dh_testdir
	# NOTE: As a result of the patch in Debian bug#164359, MPICH's mpicc
	# will compile .s files, and therefore configure will work correctly
	# without bizarre workarounds.  If, for whatever reason, you aren't
	# using the Debian MPICH packages, you may need to append the
	# following to the ./configure line:
	# MPICC=gcc LIBS=-lmpich CPPFLAGS=-I/usr/lib/mpich/include LDFLAGS=-L/usr/lib/mpich/lib/shared
	# (Thanks to Junichi Uekawa for help resolving the bug.)
	$(MAKE) -C build/mpich mdrun 
	$(MAKE) -C build/mpich-dp mdrun
	sed -e 's/#MPIABBR#/mpich/g' -e 's/#MPIPROG#/MPICH/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: clean-patched unpatch
clean-patched:
	dh_testdir
	dh_testroot
	rm -rf build
	dh_clean patch-stamp build-basic build-lam build-mpich build-openmpi configure-stamp \
	         debian/gromacs-lam.README.Debian debian/gromacs-mpich.README.Debian debian/gromacs-openmpi.README.Debian
	-test -r /usr/share/misc/config.sub && \
	 cp -f /usr/share/misc/config.sub config.sub
	-test -r /usr/share/misc/config.guess && \
	 cp -f /usr/share/misc/config.guess config.guess


install: build install-basic install-lam install-mpich install-openmpi
	dh_testdir
	dh_testroot
	dh_clean -pgromacs-doc -pgromacs-dev -k
	
	dh_installdirs -pgromacs-doc
	mv $(CURDIR)/debian/gromacs/usr/share/man \
	   $(CURDIR)/debian/gromacs-doc/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-doc/usr/share/gromacs/shell-specific
	chmod 644 $(CURDIR)/debian/gromacs-doc/usr/share/gromacs/shell-specific/*
	mv $(CURDIR)/debian/gromacs/usr/share/gromacs/tutor \
	   $(CURDIR)/debian/gromacs-doc/usr/share/gromacs/tutor
	mv $(CURDIR)/debian/gromacs/usr/share/gromacs/html \
	   $(CURDIR)/debian/gromacs-doc/usr/share/doc/gromacs/html
	uudecode -o $(CURDIR)/debian/gromacs-doc/usr/share/doc/gromacs/manual.pdf \
	          < $(CURDIR)/debian/man/manual.pdf.uue
	dh_link -pgromacs-doc usr/share/doc/gromacs-doc/html usr/share/gromacs/html
	dh_link -pgromacs-doc usr/share/doc/gromacs-doc/html usr/share/doc/gromacs-dev/html
	# one lintian warning is overridden:
	# - csh-considered-harmful: from a pair of tutorial scripts, not essential for routine package operation
	cp $(CURDIR)/debian/lintian-overrides.gromacs-doc \
	   $(CURDIR)/debian/gromacs-doc/usr/share/lintian/overrides/gromacs-doc

	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/*.a $(CURDIR)/debian/gromacs/usr/lib/*.la $(CURDIR)/debian/gromacs-dev/usr/lib
	mv $(CURDIR)/debian/gromacs-lam/usr/lib/*.so $(CURDIR)/debian/gromacs-lam/usr/lib/*.a $(CURDIR)/debian/gromacs-lam/usr/lib/*.la $(CURDIR)/debian/gromacs-dev/usr/lib
	mv $(CURDIR)/debian/gromacs-mpich/usr/lib/*.so $(CURDIR)/debian/gromacs-mpich/usr/lib/*.a $(CURDIR)/debian/gromacs-mpich/usr/lib/*.la $(CURDIR)/debian/gromacs-dev/usr/lib
ifneq (,$(findstring $(DEB_HOST_ARCH),$(OPENMPI_ARCH)))
	mv $(CURDIR)/debian/gromacs-openmpi/usr/lib/*.so $(CURDIR)/debian/gromacs-openmpi/usr/lib/*.a $(CURDIR)/debian/gromacs-openmpi/usr/lib/*.la $(CURDIR)/debian/gromacs-dev/usr/lib
endif
	mv $(CURDIR)/debian/gromacs/usr/share/gromacs/template $(CURDIR)/debian/gromacs-dev/usr/share/gromacs/template


install-basic: build
	dh_testdir
	dh_testroot
	dh_clean -pgromacs -k
	dh_installdirs -pgromacs
	$(MAKE) -C build/basic install DESTDIR=$(CURDIR)/debian/gromacs
	$(MAKE) -C build/basic-dp install DESTDIR=$(CURDIR)/debian/gromacs
	# extraneous man page, no longer associated with a binary
	# (and it needs to be removed lest it conflict with mono-mcs)
	rm -f $(CURDIR)/debian/gromacs/usr/share/man/man1/disco.1
	# rename ffscan to avoid a namespace conflict with fortools package
	mv $(CURDIR)/debian/gromacs/usr/bin/ffscan $(CURDIR)/debian/gromacs/usr/bin/g_ffscan
	sed -e 's/ffscan/g_ffscan/g' $(CURDIR)/debian/gromacs/usr/share/man/man1/ffscan.1 > $(CURDIR)/debian/gromacs/usr/share/man/man1/g_ffscan.1 && \
	rm $(CURDIR)/debian/gromacs/usr/share/man/man1/ffscan.1
	rm -f $(CURDIR)/debian/gromacs/usr/share/man/man1/*_d.1
	dh_installman -pgromacs debian/man/luck.1 debian/man/average.1 debian/man/g_nmtraj.1 debian/man/gromacs.7
	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
	# three 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 -lam, -mpich, -openmpi packages.
	# - binary-without-manpage: manpages are in the gromacs-doc package
	#   instead.  This is also overridden for linda.
	# - shlib-with-executable-stack: it's a side effect of the ASM inner
	#   loops (i386/amd64 only)
	cp $(CURDIR)/debian/lintian-overrides.gromacs $(CURDIR)/debian/gromacs/usr/share/lintian/overrides/gromacs
	cp $(CURDIR)/debian/linda-overrides.gromacs $(CURDIR)/debian/gromacs/usr/share/linda/overrides/gromacs

install-lam: build
	dh_testdir
	dh_testroot
	dh_clean -pgromacs-lam -k
	dh_installdirs -pgromacs-lam
	$(MAKE) -C build/lam install-mdrun DESTDIR=$(CURDIR)/debian/gromacs-lam
	$(MAKE) -C build/lam-dp install-mdrun DESTDIR=$(CURDIR)/debian/gromacs-lam
	dh_installman -pgromacs-lam debian/man/mdrun_mpi.lam.1
	dh_link -pgromacs-lam usr/share/man/man1/mdrun_mpi.lam.1.gz usr/share/man/man1/mdrun_mpi_d.lam.1.gz
	cp $(CURDIR)/debian/lintian-overrides.gromacs-lam $(CURDIR)/debian/gromacs-lam/usr/share/lintian/overrides/gromacs-lam

install-mpich: build
	dh_testdir
	dh_testroot
	dh_clean -pgromacs-mpich -k
	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
	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
	cp $(CURDIR)/debian/lintian-overrides.gromacs-mpich $(CURDIR)/debian/gromacs-mpich/usr/share/lintian/overrides/gromacs-mpich

install-openmpi: build
	dh_testdir
	dh_testroot
	dh_clean -pgromacs-openmpi -k
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
	cp $(CURDIR)/debian/lintian-overrides.gromacs-openmpi $(CURDIR)/debian/gromacs-openmpi/usr/share/lintian/overrides/gromacs-openmpi
endif

binary-indep: build install
	dh_testdir
	dh_testroot
	# install doc-base file from gromacs-doc and generate postinst/postrm,
	# but don't install a duplicate copyright file.  all other files are
	# moved into place in the build-basic target.
	dh_installdocs -pgromacs-doc -Xcopyright -XTODO
	dh_compress -i -X.pdf
	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 -X.pdf
	dh_fixperms -s
	dh_installdeb -s
	dh_makeshlibs -s
	dh_shlibdeps -pgromacs -L gromacs -l debian/gromacs/usr/lib
	dh_shlibdeps -pgromacs-lam -L gromacs-lam -l debian/gromacs-lam/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 clean-patched install install-basic install-lam 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: