#!/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

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)

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

ifneq (,$(findstring debug,$(DEB_BUILD_OPTIONS)))
	CFLAGS += -g
endif
ifeq (,$(findstring nostrip,$(DEB_BUILD_OPTIONS)))
	INSTALL_PROGRAM += -s
endif
ifneq (,$(findstring noopt,$(DEB_BUILD_OPTIONS)))
	CFLAGS += -O0
endif

# optional parallel build
ifneq (,$(findstring parallel,$(DEB_BUILD_OPTIONS)))
	MAKE += -j4
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

build-basic: patch-stamp
	# ####################################################################
	# the core gromacs package and standard (single-precision FP) binaries
	# ####################################################################
	dh_testdir
	[ ! -f Makefile ] || $(MAKE) clean
	./configure $(COMMON_CONFIG_PARAMS)
	$(MAKE)
	$(MAKE) install prefix=$(CURDIR)/debian/gromacs/usr exec_prefix=$(CURDIR)/debian/gromacs/usr
	# extraneous man page, no longer associated with a binary
	# (and it needs to be removed lest it conflict with mono-mcs)
	rm $(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
	# #################################
	# compile double-precision binaries
	# #################################
	./configure $(COMMON_CONFIG_PARAMS) --enable-double
	$(MAKE)
	$(MAKE) install prefix=$(CURDIR)/debian/gromacs/usr exec_prefix=$(CURDIR)/debian/gromacs/usr
	rm $(CURDIR)/debian/gromacs/usr/share/man/man1/*_d.1
	for manpage in $(CURDIR)/debian/gromacs/usr/share/man/man1/*.1; \
	do ln -sf `basename $${manpage}` $(CURDIR)/debian/gromacs/usr/share/man/man1/`basename $${manpage} .1`_d.1 ;\
	done
	# documentation is moved out of the way later, in the build-doc target
	dh_installdirs -pgromacs
	# 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
	# ####################################################
	# the following section is for the gromacs-doc package
	# ####################################################
	dh_installdirs -pgromacs-doc
	ln -sf gromacs debian/gromacs-doc/usr/share/doc/gromacs-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
	# one lintian warnings 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
	touch build-basic

build-dev: build-basic build-lam build-mpich build-openmpi patch-stamp
	dh_testdir
	dh_installdirs -pgromacs-dev
	ln -sf gromacs debian/gromacs-dev/usr/share/doc/gromacs-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
	touch build-dev

build-lam: patch-stamp
	# ##############################################
	# LAM-MPI enabled build (mdrun & libraries only)
	# ##############################################
	dh_testdir
	[ ! -f Makefile ] || $(MAKE) clean
	./configure $(COMMON_CONFIG_PARAMS) --enable-mpi --disable-nice --without-x --program-suffix=_mpi.lam --enable-mpi-libsuffix=lam MPICC=mpicc.lam
	$(MAKE) mdrun MPICC=/usr/bin/mpicc.lam CC=/usr/bin/mpicc.lam
	
	dh_installdirs -pgromacs-lam
	$(MAKE) install-mdrun prefix=$(CURDIR)/debian/gromacs-lam/usr exec_prefix=$(CURDIR)/debian/gromacs-lam/usr
	gzip -c9 debian/man/mdrun_mpi.lam.1 > $(CURDIR)/debian/gromacs-lam/usr/share/man/man1/mdrun_mpi.lam.1.gz
	sed -e 's/#MPIABBR#/lam/g' < debian/gromacs-parallel.README.Debian.in | sed -e 's/#MPIPROG#/LAM-MPI/g' > debian/gromacs-lam.README.Debian
	cp $(CURDIR)/debian/lintian-overrides.gromacs-lam $(CURDIR)/debian/gromacs-lam/usr/share/lintian/overrides/gromacs-lam
	
	# #################################
	# LAM-MPI build in double precision
	# #################################
	./configure $(COMMON_CONFIG_PARAMS) --enable-mpi --disable-nice --without-x --program-suffix=_mpi_d.lam --enable-mpi-libsuffix=lam MPICC=mpicc.lam --enable-double
	$(MAKE) mdrun MPICC=/usr/bin/mpicc.lam CC=/usr/bin/mpicc.lam
	$(MAKE) install-mdrun prefix=$(CURDIR)/debian/gromacs-lam/usr exec_prefix=$(CURDIR)/debian/gromacs-lam/usr
	ln -sf mdrun_mpi.lam.1.gz $(CURDIR)/debian/gromacs-lam/usr/share/man/man1/mdrun_mpi_d.lam.1.gz
	
	touch build-lam

build-mpich: patch-stamp
	# ############################################
	# MPICH enabled build (mdrun & libraries only)
	# ############################################
	dh_testdir
	[ ! -f Makefile ] || $(MAKE) clean
	# 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.)
	#
	./configure $(COMMON_CONFIG_PARAMS) --enable-mpi --disable-nice --without-x --program-suffix=_mpi.mpich --enable-mpi-libsuffix=mpich MPICC=mpicc.mpich
	$(MAKE) mdrun MPICC=/usr/bin/mpicc.mpich CC=/usr/bin/mpicc.mpich LIBSUFFIX=_mpi_mpich
	
	dh_installdirs -pgromacs-mpich
	$(MAKE) install-mdrun prefix=$(CURDIR)/debian/gromacs-mpich/usr exec_prefix=$(CURDIR)/debian/gromacs-mpich/usr
	gzip -c9 debian/man/mdrun_mpi.mpich.1 > $(CURDIR)/debian/gromacs-mpich/usr/share/man/man1/mdrun_mpi.mpich.1.gz
	sed -e 's/#MPIABBR#/mpich/g' < debian/gromacs-parallel.README.Debian.in | sed -e 's/#MPIPROG#/MPICH/g' > debian/gromacs-mpich.README.Debian
	cp $(CURDIR)/debian/lintian-overrides.gromacs-mpich $(CURDIR)/debian/gromacs-mpich/usr/share/lintian/overrides/gromacs-mpich
	
	# ###############################
	# MPICH build in double precision
	# ###############################
	./configure $(COMMON_CONFIG_PARAMS) --enable-mpi --disable-nice --without-x --program-suffix=_mpi_d.mpich --enable-mpi-libsuffix=mpich MPICC=mpicc.mpich --enable-double
	$(MAKE) mdrun MPICC=/usr/bin/mpicc.mpich CC=/usr/bin/mpicc.mpich LIBSUFFIX=_mpi_mpich
	$(MAKE) install-mdrun prefix=$(CURDIR)/debian/gromacs-mpich/usr exec_prefix=$(CURDIR)/debian/gromacs-mpich/usr
	ln -sf mdrun_mpi.mpich.1.gz $(CURDIR)/debian/gromacs-mpich/usr/share/man/man1/mdrun_mpi_d.mpich.1.gz
	
	touch build-mpich

build-openmpi: patch-stamp
	# Wrap this entire section in a test against OpenMPI's supported
	# platforms.
ifneq (,$(findstring $(DEB_HOST_ARCH),$(OPENMPI_ARCH)))
	# ##############################################
	# OpenMPI enabled build (mdrun & libraries only)
	# ##############################################
	dh_testdir
	[ ! -f Makefile ] || $(MAKE) clean
	./configure $(COMMON_CONFIG_PARAMS) --enable-mpi --disable-nice --without-x --disable-fortran --program-suffix=_mpi.openmpi --enable-mpi-libsuffix=openmpi MPICC=mpicc.openmpi
	$(MAKE) mdrun MPICC=/usr/bin/mpicc.openmpi CC=/usr/bin/mpicc.openmpi
	
	dh_installdirs -pgromacs-openmpi
	$(MAKE) install-mdrun prefix=$(CURDIR)/debian/gromacs-openmpi/usr exec_prefix=$(CURDIR)/debian/gromacs-openmpi/usr
	gzip -c9 debian/man/mdrun_mpi.openmpi.1 > $(CURDIR)/debian/gromacs-openmpi/usr/share/man/man1/mdrun_mpi.openmpi.1.gz
	sed -e 's/#MPIABBR#/openmpi/g' < debian/gromacs-parallel.README.Debian.in | sed -e 's/#MPIPROG#/OpenMPI/g' > debian/gromacs-openmpi.README.Debian
	cp $(CURDIR)/debian/lintian-overrides.gromacs-openmpi $(CURDIR)/debian/gromacs-openmpi/usr/share/lintian/overrides/gromacs-openmpi
	
	# #################################
	# OpenMPI build in double precision
	# #################################
	./configure $(COMMON_CONFIG_PARAMS) --enable-mpi --disable-nice --without-x --disable-fortran --program-suffix=_mpi_d.openmpi --enable-mpi-libsuffix=openmpi MPICC=mpicc.openmpi --enable-double
	$(MAKE) mdrun MPICC=/usr/bin/mpicc.openmpi CC=/usr/bin/mpicc.openmpi
	$(MAKE) install-mdrun prefix=$(CURDIR)/debian/gromacs-openmpi/usr exec_prefix=$(CURDIR)/debian/gromacs-openmpi/usr
	ln -sf mdrun_mpi.openmpi.1.gz $(CURDIR)/debian/gromacs-openmpi/usr/share/man/man1/mdrun_mpi_d.openmpi.1.gz
endif	
	
	touch build-openmpi

# Various and sundry Debian patches are managed by dpatch(1).
patch: patch-stamp
patch-stamp:
	dpatch apply-all
	dpatch status-all
	touch patch-stamp

build: patch build-stamp
build-stamp: build-basic build-dev build-mpich build-lam build-openmpi
	touch build-stamp

clean: clean-patched unpatch
clean-patched:
	dh_testdir
	dh_testroot
	rm -f build-basic build-dev build-mpich build-lam build-openmpi build-stamp
	rm -f debian/gromacs-lam.README.Debian debian/gromacs-mpich.README.Debian debian/gromacs-openmpi.README.Debian
	
	[ ! -f Makefile ] || $(MAKE) clean
	[ ! -f Makefile ] || $(MAKE) distclean
	
	dh_clean

unpatch:
	dpatch deapply-all
	rm -rf patch-stamp debian/patched

binary-indep: build-basic
	dh_testdir
	dh_testroot
	dh_installman debian/man/luck.1 debian/man/gromacs.7 debian/man/average.1 debian/man/g_nmtraj.1 -p gromacs-doc
	# 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 -p gromacs-doc -X copyright
	dh_compress -i -X.pdf
	dh_fixperms -i
	dh_installdeb -i
	dh_gencontrol -i
	dh_md5sums -i
	dh_builddeb -i

binary-arch: build
	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 -p gromacs -L gromacs -l debian/gromacs/usr/lib
	dh_shlibdeps -p gromacs-lam -L gromacs-lam -l debian/gromacs-lam/usr/lib
	dh_shlibdeps -p gromacs-mpich -L gromacs-mpich -l debian/gromacs-mpich/usr/lib
ifneq (,$(findstring $(DEB_HOST_ARCH),$(OPENMPI_ARCH)))
	dh_shlibdeps -p gromacs-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: patch clean clean-patched unpatch binary-indep binary-arch binary build

# 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: