#!/usr/bin/make -f
# Copyright Ron Lee 2003 - 2017

#export DH_VERBOSE=1

SHELL = /bin/bash

NUM_CPUS = $(shell getconf _NPROCESSORS_ONLN 2>/dev/null)
PARALLEL = $(subst parallel=,,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
NJOBS    = -j$(or $(PARALLEL),$(NUM_CPUS),1)


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


HARD_CPPFLAGS = -D_FORTIFY_SOURCE=2
HARD_CFLAGS   = -Wformat=2
HARD_LDFLAGS  = -Wl,-z,now

ifneq (,$(filter-out alpha hppa arm, $(DEB_HOST_ARCH)))
	HARD_CFLAGS += -fstack-protector-strong --param ssp-buffer-size=4
endif
ifneq (,$(filter-out ia64 hppa avr32, $(DEB_HOST_ARCH)))
	HARD_LDFLAGS += -Wl,-z,relro
endif

# Keep dpkg-buildpackage the hell out of messing with our compile flags,
# we should trust upstream to know better than it what to use here.
# We explicitly re-add -g and -O2 here, since by explicitly overriding
# these variables, we otherwise disable autoconf adding them by default.
CPPFLAGS = $(HARD_CPPFLAGS)
CFLAGS   = $(HARD_CFLAGS) -g -O2
CXXFLAGS = $(HARD_CFLAGS) -g -O2
LDFLAGS  = $(HARD_LDFLAGS)


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


# The mp3splt project consists of three parts, a common shared library, and
# two front-end applications, one command-line the other a GUI.  Even though
# all parts of that are typically released in lockstep and must all be updated
# together, the libmp3splt and mp3splt-gtk releases have a different version
# to what the CLI mp3splt component does.  (presumably because they were split
# out of it at some later point in time when the GUI tool was added).
#
# We take the mp3splt binary package version from the changelog, since we use
# its version as the source package version.  For the library and GUI binary
# packages, we use the upstream version of those components, to minimise any
# confusion when comparing what we ship to upstream's latest release.  To get
# that, we parse it from the version that their respective configure reports.
# The debian revision part will obviously always be the same for all of them.
mp3splt_version     := $(shell dpkg-parsechangelog -SVersion)
debian_revision     := $(shell echo $(mp3splt_version) | sed -e 's/.*-//')
libmp3splt_version  := $(shell ./libmp3splt/configure  -V | awk '/libmp3splt configure/ {print $$3}')-$(debian_revision)
mp3splt_gtk_version := $(shell ./mp3splt-gtk/configure -V | awk '/mp3splt-gtk configure/ {print $$3}')-$(debian_revision)
SUBST_VARS           = -Vlibmp3splt:Version=$(libmp3splt_version) -Vmp3splt-gtk:Version=$(mp3splt_gtk_version)


lib_objdir := lib-objs
cli_objdir := cli-objs
gui_objdir := gui-objs


show-versions:
	@echo " mp3splt_version     = $(mp3splt_version)"
	@echo " libmp3splt_version  = $(libmp3splt_version)"
	@echo " mp3splt_gtk_version = $(mp3splt_gtk_version)"
	@echo " debian_revision     = $(debian_revision)"
	@echo " SUBST_VARS          = $(SUBST_VARS)"


clean:
	dh_testdir
	dh_testroot
	$(RM) -r $(lib_objdir) $(cli_objdir) $(gui_objdir)
	dh_clean


$(lib_objdir)/config.status: libmp3splt/configure
	dh_testdir
	mkdir -p $(lib_objdir)
	cd $(lib_objdir) &&						\
		../libmp3splt/configure --host=$(DEB_HOST_GNU_TYPE)	\
					--build=$(DEB_BUILD_GNU_TYPE)	\
					--prefix=/usr			\
					--disable-maintainer-mode	\
					--enable-silent-rules		\
					CPPFLAGS="$(CPPFLAGS)"		\
					CFLAGS="$(CFLAGS)"		\
					CXXFLAGS="$(CXXFLAGS)"		\
					LDFLAGS="$(LDFLAGS)"		\
	|| (cat config.log; exit 1)


# Set LIBMP3SPLT_CFLAGS and LIBMP3SPLT_LIBS so that we don't need an
# installed libmp3splt.pc to find the library files and headers.
lib_cflags  = -I$(CURDIR)/libmp3splt/include
lib_ldflags = -L$(CURDIR)/$(lib_objdir)/src/.libs -lmp3splt

$(cli_objdir)/config.status: mp3splt/configure
	dh_testdir
	mkdir -p $(cli_objdir)
	cd $(cli_objdir) &&						\
		../mp3splt/configure	--host=$(DEB_HOST_GNU_TYPE)	\
					--build=$(DEB_BUILD_GNU_TYPE)	\
					--prefix=/usr			\
					--disable-maintainer-mode	\
					--enable-silent-rules		\
					--disable-rpath			\
					--enable-oggsplt_symlink	\
					--enable-flacsplt_symlink	\
					LIBMP3SPLT_CFLAGS="$(lib_cflags)" \
					LIBMP3SPLT_LIBS="$(lib_ldflags)" \
					CPPFLAGS="$(CPPFLAGS)"		\
					CFLAGS="$(CFLAGS)"		\
					CXXFLAGS="$(CXXFLAGS)"		\
					LDFLAGS="$(LDFLAGS)"		\
	|| (cat config.log; exit 1)

$(gui_objdir)/config.status: mp3splt-gtk/configure
	dh_testdir
	mkdir -p $(gui_objdir)
	cd $(gui_objdir) &&						\
		../mp3splt-gtk/configure --host=$(DEB_HOST_GNU_TYPE)	\
					--build=$(DEB_BUILD_GNU_TYPE)	\
					--prefix=/usr			\
					--disable-maintainer-mode	\
					--disable-scrollkeeper		\
					--enable-silent-rules		\
					--disable-rpath			\
					--disable-gnome                 \
					LIBMP3SPLT_CFLAGS="$(lib_cflags)" \
					LIBMP3SPLT_LIBS="$(lib_ldflags)" \
					CPPFLAGS="$(CPPFLAGS)"		\
					CFLAGS="$(CFLAGS)"		\
					CXXFLAGS="$(CXXFLAGS)"		\
					LDFLAGS="$(LDFLAGS)"		\
	|| (cat config.log; exit 1)


build: build-arch
build-arch: build-lib-stamp build-cli-stamp build-gui-stamp
build-indep:

build-lib-stamp: $(lib_objdir)/config.status
	dh_testdir
	$(MAKE) $(NJOBS) -C $(lib_objdir)
	touch $@

build-cli-stamp: $(cli_objdir)/config.status
	dh_testdir
	$(MAKE) $(NJOBS) -C $(cli_objdir)
	touch $@

build-gui-stamp: $(gui_objdir)/config.status
	dh_testdir
	$(MAKE) $(NJOBS) -C $(gui_objdir)
	touch $@



install: install-arch
install-arch: install-lib-stamp install-cli-stamp install-gui-stamp
install-indep:

install-lib-stamp: build-lib-stamp
	dh_testdir
	cd $(lib_objdir) && $(MAKE) install DESTDIR=$(CURDIR)/debian/libmp3splt
	$(RM) debian/libmp3splt/usr/lib/libmp3splt0/*.{a,la,so}
	$(RM) debian/libmp3splt/usr/lib/*.{a,la,so}
	$(RM) debian/libmp3splt/usr/share/doc/libmp3splt/doxygen/*.md5
	$(RM) -r debian/libmp3splt/usr/lib/pkgconfig
	$(RM) -r debian/libmp3splt/usr/include
	dh_lintian -plibmp3splt
	touch $@

install-cli-stamp: build-cli-stamp
	dh_testdir
	cd $(cli_objdir) && $(MAKE) install DESTDIR=$(CURDIR)/debian/mp3splt
	touch $@

install-gui-stamp: build-gui-stamp
	dh_testdir
	cd $(gui_objdir) && $(MAKE) install DESTDIR=$(CURDIR)/debian/mp3splt-gtk
	touch $@



binary: binary-arch
binary-indep:

binary-arch: install-arch
	dh_testdir
	dh_testroot
	dh_installdocs -a
	dh_installchangelogs -a
	dh_strip -a --dbg-package=mp3splt-dbg
	dh_compress -a
	dh_fixperms -a
	dh_makeshlibs -plibmp3splt -V'libmp3splt (= $(libmp3splt_version))'
	dh_installdeb -a
	dh_shlibdeps -a -- -xlibmp3splt
	dh_gencontrol -pmp3splt -pmp3splt-dbg -- $(SUBST_VARS)
	dh_gencontrol -pmp3splt-gtk -- -v$(mp3splt_gtk_version) $(SUBST_VARS)
	dh_gencontrol -plibmp3splt  -- -v$(libmp3splt_version) $(SUBST_VARS)
	dh_md5sums -a
	dh_builddeb -a


.PHONY: clean build build-arch build-indep install install-arch install-indep \
	binary binary-arch binary-indep show-versions