#!/usr/bin/make -f
# Sample debian/rules that uses debhelper.
# GNU copyright 1997 by Joey Hess.
# Modified for GAP by Bill Allombert 2002-2013

# Uncomment this to turn on verbose mode.
#export DH_VERBOSE=1

# These are used for cross-compiling and for saving the configure script
# from having to guess our platform (since we know it already)
DEB_HOST_GNU_CPU    ?= $(shell dpkg-architecture -qDEB_HOST_GNU_CPU)
DEB_HOST_GNU_TYPE   ?= $(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
DEB_BUILD_GNU_TYPE  ?= $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)
DEB_HOST_MULTIARCH  ?= $(shell dpkg-architecture -qDEB_HOST_MULTIARCH)
export FORCE_SOURCE_DATE = 1
export SOURCE_DATE_EPOCH = $(shell date -d "$$(dpkg-parsechangelog -SDate)" +%s)

triplet = $(DEB_HOST_MULTIARCH)
libtriplet = usr/lib/$(triplet)
gaptriplet = $(libtriplet)/gap
library = libgap10

#strip is handled by dh_strip
CFLAGS = -g -Wall

ifneq (,$(filter noopt,$(DEB_BUILD_OPTIONS)))
CFLAGS += -O0
else
CFLAGS += -O2
endif
CXXFLAGS := $(CFLAGS)
export CFLAGS CXXFLAGS

LDFLAGS = -Wl,-z,relro
ifneq (,$(filter terse, $(DEB_BUILD_OPTIONS)))
SILENT=""
else
SILENT="V=1"
endif

config.status: configure
	dh_testdir
	GAPHOST=$(DEB_HOST_MULTIARCH) LDFLAGS=$(LDFLAGS) ./configure \
          --host=$(DEB_HOST_GNU_TYPE) --target=$(DEB_HOST_GNU_TYPE)  --build=$(DEB_BUILD_GNU_TYPE) \
          --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --libdir=/$(libtriplet) \
          SHELL=/bin/sh GREP=/bin/grep SED=/bin/sed DD=/bin/dd STRIP=/bin/true

prep: prep-stamp
prep-stamp:
	mkdir pkg
	ln -s /usr/share/gap/pkg/GAPDoc pkg
	ln -s /usr/share/gap/pkg/AtlasRep pkg
	ln -s /usr/share/gap/pkg/CtblLib pkg
	ln -s /usr/share/gap/pkg/TomLib pkg
	ln -s /usr/share/gap/pkg/SmallGrp pkg
	ln -s /usr/share/gap/pkg/PrimGrp pkg
	ln -s /usr/share/gap/pkg/TransGrp pkg
	touch prep-stamp

build-arch: build-arch-stamp
build-arch-stamp: config.status prep-stamp
	dh_testdir
	$(MAKE) all $(SILENT)
ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
	env GAP_DIR=`pwd` LC_CTYPE=C.UTF-8 \
          $(MAKE) check $(SILENT)
endif
	$(MAKE) -C debian/doc gap.1
	touch build-arch-stamp

build-indep: build-indep-stamp
build-indep-stamp: config.status build-arch-stamp
	dh_testdir
	env GAP_DIR=`pwd` LC_CTYPE=C.UTF-8 $(MAKE) doc $(SILENT)
	$(MAKE) -C debian/doc

	touch build-indep-stamp

build: build-arch build-indep

clean:
	dh_testdir
	dh_testroot
	rm -f build-arch-stamp build-indep-stamp prep-stamp

	if test -f GNUmakefile; then $(MAKE) distclean clean; fi
	$(MAKE) -C doc clean
	$(MAKE) -C debian/doc clean

	rm -f sysinfo.gap
	rm -rf bin pkg .libs
	rm -f debian/gap.tst
	rm -f configure.lineno

	dh_clean

install: install-arch install-indep
install-arch: build-arch
	dh_testdir -a
	dh_testroot -a
	dh_prep -a
	dh_installdirs -a
	dh_install -a
	$(MAKE) install-bin     DESTDIR=$(CURDIR)/debian/gap-core   $(SILENT)
	$(MAKE) install-headers DESTDIR=$(CURDIR)/debian/libgap-dev $(SILENT)
	$(MAKE) install-sysinfo DESTDIR=$(CURDIR)/debian/gap-core   $(SILENT)
	$(MAKE) install-libgap  DESTDIR=$(CURDIR)/debian/${library} $(SILENT)
	$(MAKE) install-libgap  DESTDIR=$(CURDIR)/debian/libgap-dev $(SILENT)
	cd debian/${library}/${libtriplet} && rm libgap.so libgap.a && rm -r pkgconfig
	cd debian/libgap-dev/${libtriplet} && rm libgap.so.*
	dh_link -p gap-dev /usr/bin/gac /${libtriplet}/gap/gac
	install -m 755 doc/manualindex debian/gap-core/usr/share/gap/etc
	dh_install -p gap-core debian/gap-core/${gaptriplet}/sysinfo.gap usr/lib/gap
	mv debian/gap-core/usr/bin/gap debian/gap-core/${libtriplet}/gap/
	install -m 755 debian/gap.debian debian/gap-core/usr/bin/gap
	perl -pi -e "s,\@GAP_PRG\@,/${gaptriplet}/gap,g" \
                 debian/gap-core/usr/bin/gap
	mv debian/gap-core/usr/bin/gac debian/gap-dev/usr/bin/gac
	dh_installdocs -a
	dh_installdocs -p gap debian/changelog-*.Debian
	dh_installexamples -a
	dh_installmenu -a
	dh_installman -a
	dh_installinfo -a
	dh_installchangelogs  -a CHANGES.md

install-indep: build-indep
	dh_testdir -i
	dh_testroot -i
	dh_prep -i

	$(MAKE) -C doc install-pdf install-html "DESTDIR=../debian/gap-doc"
	$(MAKE) -C doc install-help "DESTDIR=../debian/gap-online-help"
	$(MAKE) -C debian/doc install "DESTDIR=../gap-doc"
	
	dh_installdirs -i
	dh_install -i
	dh_installdocs -p gap-doc CITATION CONTRIBUTING.md README.md
	dh_installdocs -i --all debian/changelog-*.Debian
	dh_installexamples -i
	dh_installinfo -i
	dh_installchangelogs  -i CHANGES.md

# Build architecture-independent files here.
# Pass -i to all debhelper commands in this target to reduce clutter.
binary-indep: build-indep install-indep
	dh_testdir -i
	dh_testroot -i
	dh_link -i
	dh_compress -i
	dh_fixperms -i
	dh_installdeb -i
	dh_gencontrol -i
	dh_md5sums -i
	dh_builddeb -i

# Build architecture-dependent files here.
binary-arch: build-arch install-arch
	dh_testdir -a
	dh_testroot -a
	dh_link -a
	dh_compress -a
	dh_fixperms -a
	dh_dwz -a
	dh_strip -a
	dh_makeshlibs -p $(library) -V '$(library) (>= 4.15)'
	dh_shlibdeps -a
	dh_installdeb -a
	dh_gencontrol -a -- $(SUBSTVARS)
	dh_md5sums -a
	dh_builddeb -a

binary: binary-indep binary-arch
.PHONY: build clean binary-indep binary-arch binary install
