# Makefile for drbd
#
# This file is part of DRBD by Philipp Reisner and Lars Ellenberg.
#
# Copyright (C) 2001-2008, LINBIT Information Technologies GmbH.
# Copyright (C) 2001-2008, Philipp Reisner <philipp.reisner@linbit.com>.
# Copyright (C) 2002-2008, Lars Ellenberg <lars.ellenberg@linbit.com>.
#
# drbd 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 2, or (at your option)
# any later version.
#
# drbd 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 drbd
# the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
#

# TODO move some of the more cryptic bash scriptlets here into scripts/*
# and call those from here.	-- lge

# variables set by configure
GIT = @GIT@
LN_S = @LN_S@
PREFIX = @prefix@
RPMBUILD = @RPMBUILD@
SED = @SED@

# features enabled or disabled by configure
WITH_UDEV = @WITH_UDEV@
WITH_XEN = @WITH_XEN@
WITH_PACEMAKER = @WITH_PACEMAKER@
WITH_HEARTBEAT = @WITH_HEARTBEAT@
WITH_RGMANAGER = @WITH_RGMANAGER@
WITH_BASHCOMPLETION = @WITH_BASHCOMPLETION@
WITH_83_SUPPORT = @WITH_83_SUPPORT@
WITH_84_SUPPORT = @WITH_84_SUPPORT@
WITH_MANUAL = @WITH_MANUAL@
WITH_DRBDMON = @WITH_DRBDMON@

# for some reason some of the commands below only work correctly in bash,
# and not in e.g. dash. I'm too lazy to fix it to be compatible.
SHELL=/bin/bash

TOOLS_DIRS  = user/shared user/v9 user/v84 user/v83 scripts user/drbdmon
DOC_DIRS    = documentation/v83 documentation/v84 documentation/v9
SUBDIRS     = $(TOOLS_DIRS) $(DOC_DIRS)

REL_VERSION := $(shell $(SED) -ne '/^AC_INIT/{s/^[^,]*, *\([^,]*\) *,.*/\1/;p;q}' configure.ac)
ifdef FORCE
#
# NOTE to generate a tgz even if too lazy to update the changelogs,
# or to forcefully include the FIXME to be done: latest change date;
# for now, include the git hash of the latest commit
# in the tgz name:
#   make distclean doc tgz FORCE=1
#
REL_VERSION := $(REL_VERSION)-$(shell $(GIT) rev-parse HEAD)
endif

DIST_VERSION := $(REL_VERSION)
FDIST_VERSION := $(shell test -e .filelist && sed -ne 's,^drbd-utils-\([^/]*\)/.*,\1,p;q' < .filelist)
ifeq ($(FDIST_VERSION),)
FDIST_VERSION := $(DIST_VERSION)
endif

all-yes := check-submods configure tools
all-$(WITH_MANUAL) += doc
all: $(all-yes)

.PHONY: all tools doc
tools:
	@ set -e; for i in $(TOOLS_DIRS); do $(MAKE) -C $$i ; done
	@ echo -e "\n\tUserland tools build was successful."

doc:
	$(MAKE) -C documentation/v9 doc
ifeq ($(WITH_83_SUPPORT),yes)
	$(MAKE) -C documentation/v83 doc
endif
ifeq ($(WITH_84_SUPPORT),yes)
	$(MAKE) -C documentation/v84 doc
endif

# we cannot use 'git submodule foreach':
# foreach only works if submodule already checked out
.PHONY: check-submods
check-submods:
	@if test -d .git && test -s .gitmodules; then \
		for d in `grep "^\[submodule" .gitmodules | cut -f2 -d'"'`; do \
			if [ ! "`ls -A $$d`" ]; then \
				git submodule init; \
				git submodule update; \
				break; \
			fi; \
		done; \
	fi

.PHONY:	doc-clean install install-tools clean distclean extra-clean uninstall
doc-clean:
	$(MAKE) -C documentation/v9 doc-clean
ifeq ($(WITH_83_SUPPORT),yes)
	$(MAKE) -C documentation/v83 doc-clean
endif
ifeq ($(WITH_84_SUPPORT),yes)
	$(MAKE) -C documentation/v84 doc-clean
endif

install-yes := install-tools
install-$(WITH_MANUAL) += install-doc
install: $(install-yes)

install-tools:
	@ set -e; for i in $(patsubst drbd,,$(TOOLS_DIRS)); do $(MAKE) -C $$i install; done

install-doc:
	@ set -e; for i in $(patsubst drbd,,$(DOC_DIRS)); do $(MAKE) -C $$i install; done

.NOTPARALLEL clean:
	@ set -e; for i in $(SUBDIRS); do $(MAKE) -C $$i clean; done
	rm -f *~
	rm -rf dist


distclean:
	@ set -e; for i in $(SUBDIRS); do $(MAKE) -C $$i distclean; done
	rm -f *~ .filelist
	rm -rf dist
	rm -rf autom4te.cache
	rm -f config.log

EXTRA_CLEAN += Makefile user/Makefile user/v83/Makefile user/v84/Makefile user/v9/Makefile scripts/Makefile user/drbdmon/Makefile
EXTRA_CLEAN += documentation/Makefile documentation/v83/Makefile documentation/v84/Makefile documentation/v9/Makefile
EXTRA_CLEAN += user/shared/config.h drbd.spec
EXTRA_CLEAN += configure config.status
extra-clean: distclean
	rm -f $(EXTRA_CLEAN)

uninstall:
	@ set -e; for i in $(SUBDIRS); do $(MAKE) -C $$i uninstall; done

.PHONY: check_changelogs_up2date
check_changelogs_up2date:
	@ up2date=true; dver_re=$(DIST_VERSION); dver_re=$${dver_re//./\\.}; \
	echo "checking for presence of $$dver_re in various changelog files"; \
	in_changelog=$$(sed -n -e '0,/^%changelog/d' \
	                     -e '/- '"$$dver_re"'-/p' < drbd.spec.in) ; \
	if test -z "$$in_changelog" ; \
	then \
	   echo -e "\n\t%changelog in drbd.spec.in needs update"; \
	   up2date=false; fi; \
	if ! grep "^$$dver_re\>" >/dev/null 2>&1 ChangeLog; \
	then \
	   echo -e "\n\tChangeLog needs update"; \
	   up2date=false; fi ; \
	if ! grep "^AC_INIT(DRBD, $$dver_re" >/dev/null 2>&1 configure.ac; \
	then \
	   echo -e "\n\tconfigure.ac needs update"; \
	   up2date=false; fi ; \
	if ! grep "^drbd-utils ($$dver_re+linbit" >/dev/null 2>&1 debian/changelog; \
	then \
	   echo -e "\n\tdebian/changelog needs update [ignored]\n"; \
	   : do not fail the build because of outdated debian/changelog ; fi ; \
	$$up2date

PNAME	:= drbd-utils
.PHONY: .filelist
.filelist:
	@set -e ; submodules=`$(GIT) submodule foreach --quiet 'echo $$path'`; \
	$(GIT) ls-files | \
		grep -vxF -e "$$submodules" | \
		sed '$(if $(PRESERVE_DEBIAN),,/^debian/d);s#^#$(PNAME)-$(DIST_VERSION)/#' | \
		grep -v "gitignore\|gitmodules" > .filelist
	@$(GIT) submodule foreach --quiet 'git ls-files | sed -e "s,^,$(PNAME)-$(DIST_VERSION)/$$path/,"' | \
		grep -v "gitignore\|gitmodules" >> .filelist
	@[ -s .filelist ] # assert there is something in .filelist now
	@find documentation -name "[^.]*.[58]" -o -name "*.html" | \
	sed "s/^/$(PNAME)-$(DIST_VERSION)\//"              >> .filelist ; \
	echo $(PNAME)-$(DIST_VERSION)/user/shared/drbd_buildtag.c >> .filelist ; \
	echo $(PNAME)-$(DIST_VERSION)/user/shared/config.h.in  >> .filelist ; \
	echo $(PNAME)-$(DIST_VERSION)/.filelist            >> .filelist ; \
	echo $(PNAME)-$(DIST_VERSION)/configure            >> .filelist ; \
	echo "./.filelist updated."

# tgz will no longer automatically update .filelist,
# so the tgz and therefore rpm target will work within
# an extracted tarball, too.
# to generate a distribution tarball, use make tarball,
# which will regenerate .filelist
.PHONY: tgz
tgz:
	test -e .filelist
	rm -f drbd-utils-$(FDIST_VERSION)
	$(LN_S) . drbd-utils-$(FDIST_VERSION)
	for f in $$(<.filelist) ; do [ -e $$f ] && continue ; echo missing: $$f ; exit 1; done
	grep debian .filelist >/dev/null 2>&1 && _DEB=-debian || _DEB="" ; \
	test -n "$$KEEPNAME" && _DEB="" || :; \
	tar --owner=0 --group=0 -czf - -T .filelist > drbd-utils-$(FDIST_VERSION)$$_DEB.tar.gz
	rm drbd-utils-$(FDIST_VERSION)

ifeq ($(FORCE),)
tgz: check_changelogs_up2date doc
endif

tools doc tgz: check-submods

.PHONY: check_all_committed prepare_release tarball
check_all_committed:
	@$(if $(FORCE),-,)modified=`$(GIT) ls-files -m -t`; 		\
	if test -n "$$modified" ; then	\
		echo "$$modified";	\
	       	false;			\
	fi

prepare_release:
	$(MAKE) tarball
	$(MAKE) tarball PRESERVE_DEBIAN=1

debrelease:
	$(MAKE) tarball PRESERVE_DEBIAN=1 KEEPNAME=1

configure.ac: ;
configure: configure.ac
	aclocal
	autoheader
	autoconf

config.status: configure
	@printf "\nYou need to call ./configure with appropriate arguments (again).\n\n"; exit 1

tarball: check-submods check_all_committed distclean doc configure .filelist
	$(MAKE) tgz

ifdef RPMBUILD
drbd.spec: drbd.spec.in configure
	./configure --enable-spec

.PHONY: rpmprep
rpmprep: tgz drbd.spec
	cp drbd-utils-$(FDIST_VERSION).tar.gz `rpm -E "%_sourcedir"`

.PHONY: rpm
rpm: rpmprep
	$(RPMBUILD) -bb \
	    $(RPMOPT) \
	    drbd.spec
	@echo "You have now:" ; find `rpm -E "%_rpmdir"` -name *.rpm

.PHONY: srpm
srpm: rpmprep
	$(RPMBUILD) -bs \
		$(RPMOPT) \
		drbd.spec
	@echo "You have now:" ; find `rpm -E "%_srcrpmdir"` -name *.src.rpm
endif

Makefile.in: ;
Makefile: Makefile.in config.status
	./config.status Makefile