#!/usr/bin/make -f
# -*- makefile -*-

DEB_BUILD_ARCH_OS    ?= $(shell dpkg-architecture -qDEB_BUILD_ARCH_OS)

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

LSB_RELEASE := $(shell lsb_release -i -s)
SERVER_VERSION := $(shell dpkg-parsechangelog | perl -ne 'print $$1 if m/Version:\s*([\d\.]+)/')
DEBIAN_VERSION := $(shell dpkg-parsechangelog | perl -ne 'print $$1 if m/Version:\s*(.+)/')
MODULE_DIR := /usr/lib/apache2/modules/
API = $(shell perl -ne 'print $$1 if m/define\s+MODULE_MAGIC_NUMBER_MAJOR\s+?(.*)$$/' < include/ap_mmn.h)
AP2_CFLAGS = -pipe $(shell dpkg-buildflags --get CFLAGS)
AP2_LDFLAGS = -Wl,--as-needed $(shell dpkg-buildflags --get LDFLAGS)
AP2_CPPFLAGS = -DPLATFORM='\"$(LSB_RELEASE)\"' $(shell dpkg-buildflags --get CPPFLAGS)


support/suexec-custom.c: support/suexec.c debian/patches/suexec-custom.patch
	cp support/suexec.c support/suexec-custom.c
	patch -p1 -i debian/patches/suexec-custom.patch

server/mpm/itk/.stamp:
	mkdir server/mpm/itk/
	cp server/mpm/prefork/* server/mpm/itk/
	mv server/mpm/itk/prefork.c server/mpm/itk/itk.c
	set -ex; for p in $$(grep -v '^#' debian/patches/itk/series) ; do \
		echo Applying $$p ... ;\
		patch -p1 -i debian/patches/itk/$$p ;\
	done
	touch "$@"

prebuild-checks:
	ERRS="" ;\
	for a in $$(find debian/config-dir/ -type f) ; do \
		t="$$a.$$$$" ;\
		unexpand < "$$a" > "$$t" ;\
		cmp -s "$$a" "$$t" || ERRS="$$ERRS $$a" ;\
		rm "$$t" ;\
	done ;\
	if [ -n "$$ERRS" ] ; then \
		echo 'ERROR: The following files contain spaces instead of tabs. Run through unexpand!' ;\
		ls -1 $$ERRS ;\
		false ;\
	fi

clean-config-vars:
	# Clean up config_vars.mk
	# FIXME: Maybe someone could document here why we actually need to
	# cleanup some stuff here
	perl ./debian/clean_config_vars '$(AP2_CFLAGS)' '$(AP2_CPPFLAGS)' '$(AP2_LDFLAGS)'

%: %.in
	sed 's#__SERVER_VERSION__#$(SERVER_VERSION)#; s#__MODULE_DIR__#$(MODULE_DIR)#; s#__API__#$(API)#;' $< > $@
	chmod `/usr/bin/stat -c '%a' "$<"` $@

prepare-scripts: debian/a2query debian/debhelper/dh_apache2
	(grep -s -v apache2:API debian/apache2-bin.substvars; echo apache2:API=apache2-api-$(API)) > debian/apache2-bin.substvars.new
	mv debian/apache2-bin.substvars.new debian/apache2-bin.substvars

generate-maintainer-scripts:
	set -e ; \
	for type in custom pristine ; do \
		for f in postinst preinst prerm links dirs lintian-overrides postrm; do \
			if [ -e debian/apache2-suexec.$$f.in ] ; then \
				perl -pe "s{__TYPE__}{$$type}g" < debian/apache2-suexec.$$f.in > debian/apache2-suexec-$$type.$$f ;\
				chmod `/usr/bin/stat -c '%a' "debian/apache2-suexec.$$f.in"` debian/apache2-suexec-$$type.$$f ;\
			fi ;\
		done ;\
	done

clean build build-arch build-indep binary binary-arch binary-indep: %:
	dh $@ --parallel --with autotools_dev

override_dh_auto_configure: generate-maintainer-scripts prebuild-checks server/mpm/itk/.stamp support/suexec-custom.c
	./configure --enable-layout=Debian --enable-so --with-program-name=apache2 \
		--enable-suexec --with-suexec-caller=www-data \
		--with-suexec-bin=/usr/lib/apache2/suexec --with-suexec-docroot=/var/www \
		--with-suexec-userdir=public_html --with-suexec-logfile=/var/log/apache2/suexec.log \
		--with-suexec-uidmin=100 --enable-suexec=shared --enable-log-config=static \
		--with-apr=/usr/bin/apr-1-config --with-apr-util=/usr/bin/apu-1-config \
		--with-pcre=yes \
		--enable-pie \
		--enable-mpms-shared=all \
		--enable-mods-shared="all cgi" \
		--enable-mods-static="unixd logio watchdog version" \
		CFLAGS="$(AP2_CFLAGS)" CPPFLAGS="$(AP2_CPPFLAGS)" LDFLAGS="$(AP2_LDFLAGS)" \
		$(AP2_EXTRAFLAGS)
ifneq (hurd, $(DEB_BUILD_ARCH_OS))
	# XXX Hack to make mod_mpm_itk.so link against libcap until we
	# XXX move itk to a separate package
	perl -p -i -e 's/(-avoid-version)/$$1 -lcap/' server/mpm/itk/modules.mk
endif

override_dh_install: clean-config-vars prepare-scripts
	dh_install --list-missing

override_dh_fixperms-arch:
	# standard suexec
	chmod 4754 debian/apache2-suexec-pristine/usr/lib/apache2/suexec-pristine
	chgrp www-data debian/apache2-suexec-pristine/usr/lib/apache2/suexec-pristine
	# configurable suexec
	chmod 4754 debian/apache2-suexec-custom/usr/lib/apache2/suexec-custom
	chgrp www-data debian/apache2-suexec-custom/usr/lib/apache2/suexec-custom
	dh_fixperms -a -Xusr/lib/apache2/suexec-custom -Xusr/lib/apache2/suexec-pristine
	chown -R www-data:www-data debian/apache2/var/cache/apache2/mod_cache_disk
	chown root:adm debian/apache2/var/log/apache2
	chmod o-rx debian/apache2/var/log/apache2

override_dh_fixperms-indep:
	dh_fixperms -i

override_dh_installinit:
	dh_installinit --restart-after-upgrade -- defaults 91 09


override_dh_installdocs-indep:
	# TODO: So, did anyone check convert_docs needs an update? ;)
	perl debian/convert_docs debian/apache2-doc/usr/share/doc/apache2-doc/manual
	dh_installdocs -i

override_dh_installdocs-arch:
	dh_installdocs --link-doc=apache2 -papache2 -papache2-dbg \
		-papache2-mpm-worker -papache2-mpm-prefork -papache2-mpm-event \
		-papache2-mpm-itk -plibapache2-mod-proxy-html -papache2.2-bin \
		-plibapache2-mod-proxy-html
	dh_installdocs --link-doc=apache2-suexec-pristine -papache2-suexec
	dh_installdocs -a

override_dh_installchangelogs:
	# Do not install changelogs for transitional packages and the -data
	# package not to trash the disk at the installation site. Together with
	# dh_installdocs this means that changelogs are installed in a few
	# packages only.
	dh_installchangelogs -Napache2-suexec -Napache2-mpm-worker \
		-Napache2-mpm-prefork -Napache2-mpm-event -Napache2-mpm-itk \
		-Napache2-data -Nlibapache2-mod-proxy-html -Napache2.2-bin

override_dh_installman:
	mv debian/tmp/usr/share/man/man8/suexec.8 debian/tmp/usr/share/man/man8/suexec-pristine.8
	pod2man debian/debhelper/dh_apache2 > debian/manpages/dh_apache2.1
	pod2man debian/a2query.in > debian/manpages/a2query.8
	dh_installman

override_dh_strip:
	dh_strip --dbg-package=apache2-dbg

override_dh_auto_install:
	dh_auto_install -- -j1

override_dh_builddeb:
	dh_builddeb -- -Zxz

override_dh_auto_clean:
	dh_auto_clean
	if test -d server/mpm/itk ; then rm -r server/mpm/itk ; fi

override_dh_gencontrol:
	dh_gencontrol  -p libapache2-mod-proxy-html -- -v1:$(DEBIAN_VERSION)
	dh_gencontrol --remaining-packages

.PHONY: generate-maintainer-scripts clean-config-vars prepare-scripts prebuild-checks
.PHONY: clean build build-arch build-indep binary binary-arch binary-indep