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# Copyright 1999-2008 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI="1"

WANT_AUTOCONF="latest"
WANT_AUTOMAKE="none"
inherit eutils gnuconfig multilib toolchain-funcs versionator autotools

KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~sparc-fbsd ~x86 ~x86-fbsd"

DESCRIPTION="PostgreSQL server"
HOMEPAGE="http://www.postgresql.org/"
SRC_URI="mirror://postgresql/source/v${PV}/postgresql-${PV}.tar.bz2"
LICENSE="POSTGRESQL"
SLOT="$(get_version_component_range 1-2)"
IUSE_LINGUAS="
	linguas_cs linguas_de linguas_es linguas_fr linguas_hr linguas_hu
	linguas_it linguas_nb linguas_pt_BR linguas_ru linguas_sl linguas_sv
	linguas_tr linguas_zh_CN linguas_zh_TW"
IUSE="doc perl python selinux test tcl xml nls kernel_linux ${IUSE_LINGUAS}"

wanted_languages() {
	for u in ${IUSE_LINGUAS} ; do
		use $u && echo ${u#linguas_}
	done
}

RDEPEND="~dev-db/postgresql-base-${PV}:${SLOT}
		perl? ( >=dev-lang/perl-5.6.1-r2 )
		python? ( >=dev-lang/python-2.2 dev-python/egenix-mx-base )
		selinux? ( sec-policy/selinux-postgresql )
		tcl? ( >=dev-lang/tcl-8 )
		xml? ( dev-libs/libxml2 dev-libs/libxslt )"
DEPEND="${RDEPEND}
		xml? ( dev-util/pkgconfig )"
PDEPEND="doc? ( dev-db/postgresql-docs:${SLOT} )"

[[ -r /etc/conf.d/postgresql-${SLOT} ]] && source /etc/conf.d/postgresql-${SLOT}
[[ -z "${PGDATA}" ]] && PGDATA="/var/lib/postgresql/${SLOT}/data"
[[ -z "${PG_MAX_CONNECTIONS}" ]] && PG_MAX_CONNECTIONS="512"

S="${WORKDIR}/postgresql-${PV}"

pkg_setup() {
	if [[ -f "${PGDATA}/PG_VERSION" ]] ; then
		if [[ $(cat "${PGDATA}/PG_VERSION") != $(get_version_component_range 1-2) ]] ; then
			eerror "PostgreSQL ${PV} cannot upgrade your existing databases, you must"
			eerror "use pg_dump to export your existing databases to a file, and then"
			eerror "pg_restore to import them when you have upgraded completely."
			eerror "You must remove your entire database directory to continue."
			eerror "(database directory = ${PGDATA})."
			die "Remove your database directory to continue"
		fi
	fi
	enewgroup postgres 70
	enewuser postgres 70 /bin/bash /var/lib postgres
}

src_unpack() {
	unpack ${A}
	cd "${S}"

	epatch "${FILESDIR}/postgresql-${PV}-autoconf.patch"
	epatch "${FILESDIR}/postgresql-${SLOT}-vacuum-delay.patch"
	epatch "${FILESDIR}/postgresql-${SLOT}-server.patch"

	if use test ; then
		epatch "${FILESDIR}/postgresql-${SLOT}-regress.patch"
	fi

	eautoreconf
}

src_compile() {
	# TODO: test if PPC really cannot work with other CFLAGS settings
	# use ppc && CFLAGS="-pipe -fsigned-char"

	# eval is needed to get along with pg_config quotation of space-rich entities.
	eval econf "$(/usr/$(get_libdir)/postgresql-${SLOT}/bin/pg_config --configure)" \
		$(use_with perl) \
		$(use_with python) \
		$(use_with tcl) \
		--with-includes="/usr/include/postgresql-${SLOT}/" \
		--with-libs="/usr/$(get_libdir)/postgresql-${SLOT}/$(get_libdir)/" \
		"$(built_with_use ~dev-db/postgresql-base-${PV} nls && use_enable nls nls "$(wanted_languages)")" \
		"CFLAGS='${CFLAGS} $(use xml && pkg-config --cflags libxml-2.0)'" \
		"LIBS='${LIBS} $(use xml && pkg-config --libs libxml-2.0) -L/usr/$(get_libdir)/postgresql-${SLOT}/$(get_libdir)'" \
		|| die "configure failed"

	for bd in . contrib $(use xml && echo contrib/xml) ; do
		PATH="/usr/$(get_libdir)/postgresql-${SLOT}/bin:${PATH}" \
			emake -C $bd -j1 LD="$(tc-getLD) $(get_abi_LDFLAGS)" \
				docdir=/usr/share/doc/${PF} SLOT=${SLOT} || die "emake in $bd failed"
	done
}

src_install() {
	if use perl ; then
		mv -f "${S}/src/pl/plperl/GNUmakefile" "${S}/src/pl/plperl/GNUmakefile_orig"
		sed -e "s:\$(DESTDIR)\$(plperl_installdir):\$(plperl_installdir):" \
			"${S}/src/pl/plperl/GNUmakefile_orig" > "${S}/src/pl/plperl/GNUmakefile"
	fi

	for bd in . contrib $(use xml && echo contrib/xml) ; do
		PATH="/usr/$(get_libdir)/postgresql-${SLOT}/bin:${PATH}" \
			emake install -C $bd -j1 DESTDIR="${D}" \
				docdir=/usr/share/doc/${PF} SLOT=${SLOT} || die "emake install in $bd failed"
	done
	rm -rf "${D}/usr/share/postgresql-${SLOT}/man/man7/"
	rm "${D}"/usr/share/postgresql-${SLOT}/man/man1/{clusterdb,create{db,lang,user},drop{db,lang,user},ecpg,pg_{config,dump,dumpall,restore},psql,vacuumdb,pgtksh,pgtclsh}.1

	dodoc README HISTORY doc/{README.*,TODO,bug.template}

	dodir /usr/$(get_libdir)/eselect-postgresql/slots/${SLOT}
	cat >"${D}/usr/$(get_libdir)/eselect-postgresql/slots/${SLOT}/service" <<-__EOF__
		postgres_ebuilds="\${postgres_ebuilds} ${PF}"
		postgres_service="postgresql-${SLOT}"
	__EOF__

	newinitd "${FILESDIR}/postgresql.init-${SLOT}" postgresql-${SLOT} || die "Inserting init.d-file failed"
	newconfd "${FILESDIR}/postgresql.conf-${SLOT}" postgresql-${SLOT} || die "Inserting conf.d-file failed"
}

pkg_postinst() {
	eselect postgresql update
	[[ "$(eselect postgresql show)" = "(none)" ]] && eselect postgresql set ${SLOT}
	[[ "$(eselect postgresql show-service)" = "(none)" ]] && eselect postgresql set-service ${SLOT}
	elog "Execute the following command to setup the initial database environment:"
	elog
	elog "emerge --config =${CATEGORY}/${PF}"
	elog
}

pkg_postrm() {
	eselect postgresql update
}

pkg_config() {
	einfo "Creating the data directory ..."
	mkdir -p "${PGDATA}"
	chown -Rf postgres:postgres "${PGDATA}"
	chmod 0700 "${PGDATA}"

	einfo "Initializing the database ..."
	if [[ -f "${PGDATA}/PG_VERSION" ]] ; then
		eerror "PostgreSQL ${PV} cannot upgrade your existing databases."
		eerror "You must remove your entire database directory to continue."
		eerror "(database directory = ${PGDATA})."
		die "Remove your database directory to continue"
	else
		if use kernel_linux ; then
			local SEM=`sysctl -n kernel.sem | cut -f-3`
			local SEMMNI=`sysctl -n kernel.sem | cut -f4`
			local SEMMNI_MIN=`expr \( ${PG_MAX_CONNECTIONS} + 15 \) / 16`
			local SHMMAX=`sysctl -n kernel.shmmax`
			local SHMMAX_MIN=`expr 500000 + 30600 \* ${PG_MAX_CONNECTIONS}`

			if [ ${SEMMNI} -lt ${SEMMNI_MIN} ] ; then
				eerror "The current value of SEMMNI is too low"
				eerror "for PostgreSQL to run ${PG_MAX_CONNECTIONS} connections!"
				eerror "Temporary setting this value to ${SEMMNI_MIN} while creating the initial database."
				echo ${SEM} ${SEMMNI_MIN} > /proc/sys/kernel/sem
			fi
			su postgres -c "/usr/$(get_libdir)/postgresql-${SLOT}/bin/initdb --pgdata ${PGDATA} ${PG_INITDB_OPTS}"

			if [ ! `sysctl -n kernel.sem | cut -f4` -eq ${SEMMNI} ] ; then
				echo ${SEM} ${SEMMNI} > /proc/sys/kernel/sem
				ewarn "Restoring the SEMMNI value to the previous value."
				ewarn "Please edit the last value of kernel.sem in /etc/sysctl.conf"
				ewarn "and set it to at least ${SEMMNI_MIN}:"
				ewarn
				ewarn "  kernel.sem = ${SEM} ${SEMMNI_MIN}"
				ewarn
			fi

			if [ ${SHMMAX} -lt ${SHMMAX_MIN} ] ; then
				eerror "The current value of SHMMAX is too low for postgresql to run."
				eerror "Please edit /etc/sysctl.conf and set this value to at least ${SHMMAX_MIN}:"
				eerror
				eerror "  kernel.shmmax = ${SHMMAX_MIN}"
				eerror
			fi
		else
			su postgres -c "/usr/$(get_libdir)/postgresql-${SLOT}/bin/initdb --pgdata ${PGDATA} ${PG_INITDB_OPTS}"
		fi

		einfo
		einfo "You can use the '${ROOT}/etc/init.d/postgresql-${SLOT}' script to run PostgreSQL instead of 'pg_ctl'."
		einfo
	fi
}

src_test() {
	einfo ">>> Test phase [check]: ${CATEGORY}/${PF}"
	PATH="/usr/$(get_libdir)/postgresql-${SLOT}/bin:${PATH}" \
		emake -j1 check \
			PGXS=$(/usr/$(get_libdir)/postgresql-${SLOT}/bin/pg_config --pgxs) \
			NO_PGXS=0 USE_PGXS=1 SLOT=${SLOT} || die "Make check failed. See above for details."

	einfo "Yes, there are other tests which could be run."
	einfo "... and no, we don't plan to add/support them."
	einfo "For now, the main regressions tests will suffice."
	einfo "If you think other tests are necessary, please submit a"
	einfo "bug including a patch for this ebuild to enable them."
}