#!/usr/bin/make -f
# -*- makefile -*-
# Copyright © 2010-2015 Stephen Kitt <steve@sk2.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

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

# Disable package mangling in Launchpad; it currently fails to parse
# Built-Using, which results in build failures
export NO_PKG_MANGLE=1

include /usr/share/dpkg/pkg-info.mk
include /usr/share/dpkg/architecture.mk

top_dir := $(shell pwd)
gdb_dir := /usr/src
upstream_gdb_dir := $(top_dir)/upstream
upstream_gdbserver_dir := $(upstream_gdb_dir)/gdb/gdbserver
build_gdb_dir := $(top_dir)/build-gdb
build_gdbserver_dir := $(top_dir)/build-gdbserver
source_version := $(shell dpkg-query -W -f="\$${Version}\n" gdb-source)
deb_version := $(source_version)+$(DEB_VERSION)
deb_upstream_version := $(shell echo $(deb_version) | cut -d- -f1)
gnu_upstream_version := $(shell echo $(deb_upstream_version) | cut -d. -f1-3)
package := gdb-mingw-w64

targets := i686-w64-mingw32 x86_64-w64-mingw32

# Full hardening for Debian-targeted builds
dpkg_buildflags_arch = DEB_BUILD_MAINT_OPTIONS="hardening=+all" dpkg-buildflags

# Windows targets don't support stackprotector, relro, bindnow or pie
# We disable PE timestamps to build reproducibly
# We disable format because the gdb build tries to do so (partially)
# anyway, and breaks the build with -Werror=format-security as a result
dpkg_buildflags_indep = DEB_BUILD_MAINT_OPTIONS="hardening=-stackprotector,-relro,-bindnow,-pie,-format" DEB_LDFLAGS_MAINT_APPEND="-Xlinker --no-insert-timestamp" dpkg-buildflags

unpack: unpack-stamp
unpack-stamp:
	tar xf $(gdb_dir)/gdb.tar.*
	rm -rf $(upstream_gdb_dir)
	mv gdb $(upstream_gdb_dir)
	touch $@

patch: patch-stamp
patch-stamp: unpack-stamp
	# No patches for now
	touch $@

clean:
	dh_testdir
	dh_testroot
	rm -rf *-stamp $(build_gdb_dir) $(build_gdbserver_dir) $(upstream_gdb_dir)
	dh_clean

configure-arch-stamp: patch-stamp
	dh_testdir
	set -e; \
	for target in $(targets); do \
		mkdir -p $(build_gdb_dir)/$$target; \
		cd $(build_gdb_dir)/$$target; \
		$(upstream_gdb_dir)/configure \
			--build=$(DEB_BUILD_GNU_TYPE) \
			--prefix=/usr --enable-lto \
			--with-system-readline --with-system-zlib \
			--enable-tui --with-expat --with-python \
			--target=$$target --disable-werror \
			$(shell $(dpkg_buildflags_arch) --export=cmdline); \
	done
	touch $@

configure-indep-stamp: patch-stamp
	dh_testdir
	set -e; \
	for target in $(targets); do \
		mkdir -p $(build_gdbserver_dir)/$$target; \
		cd $(build_gdbserver_dir)/$$target; \
		$(upstream_gdbserver_dir)/configure \
			--build=$(DEB_BUILD_GNU_TYPE) \
			--host=$$target --target=$$target \
			--disable-werror \
			$(shell $(dpkg_buildflags_indep) --export=cmdline); \
	done
	touch $@

# dpkg-buildpackage -B calls build rather than build-arch,
# so have build only depend on build-arch
build: build-arch

build-arch: build-arch-stamp
build-arch-stamp: configure-arch-stamp
	dh_testdir
	set -e; \
	for target in $(targets); do \
		$(shell $(dpkg_buildflags_arch) --export=sh); \
		dh_auto_build --parallel -B$(build_gdb_dir)/$$target; \
	done
	touch $@

build-indep: build-indep-stamp
build-indep-stamp: configure-indep-stamp
	dh_testdir
	set -e; \
	for target in $(targets); do \
		$(shell $(dpkg_buildflags_indep) --export=sh); \
		dh_auto_build --parallel -B$(build_gdbserver_dir)/$$target; \
	done
	touch $@

install: install-stamp
install-stamp: build-arch-stamp
	dh_testdir
	dh_testroot
	dh_prep
	set -e; \
	for target in $(targets); do \
		dh_auto_install -B$(build_gdb_dir)/$$target; \
	done

	# Drop files which will conflict with other packages
	rm -rf debian/$(package)/usr/lib
	rm -rf debian/$(package)/usr/share/gdb
	rm -rf debian/$(package)/usr/share/info
	rm -rf debian/$(package)/usr/share/locale

	touch $@

binary-indep: build-indep
	dh_testdir -i
	dh_testroot -i
	dh_install -i
	dh_installdocs -i
	dh_installchangelogs -i $(upstream_gdb_dir)/ChangeLog
	dh_link -i
	dh_strip -i
	dh_lintian -i
	dh_compress -i
	dh_fixperms -i
	dh_installdeb -i
	dh_shlibdeps -i
	dh_gencontrol -i -- -v$(deb_version) -Vlocal:Version=$(deb_upstream_version) -Vgdb:Version=$(source_version)
	dh_md5sums -i
	dh_builddeb -i

binary-arch: install
	dh_testdir -a
	dh_testroot -a
	dh_install -a
	dh_installdocs -a
	dh_installchangelogs -a $(upstream_gdb_dir)/ChangeLog
	dh_link -a
	dh_strip -a
	dh_lintian -a
	dh_compress -a
	dh_fixperms -a
	dh_installdeb -a
	dh_shlibdeps -a
	dh_gencontrol -a -- -v$(deb_version) -Vlocal:Version=$(deb_upstream_version) -Vgdb:Version=$(source_version)
	dh_md5sums -a
	dh_builddeb -a

binary: binary-indep binary-arch

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