net-nds/openldap: get 2.4.x building again, with atexit fix from upstream

2.4.x series should be announced as end-of-life in Gentoo; to get
remaining consumers to migrate to the 2.5 or 2.6 series.

2.4.59-r2 does not build with GCC14, and 2.4.59-r3 builds with warnings,
some of which are downgraded from error.

atexit-fix ensures that consumers of the libraries do not segfault
during their cleanup.

Please note that 2.4.x does NOT consistently pass src_test at this time.

Closes: https://bugs.gentoo.org/show_bug.cgi?id=920380
Closes: https://bugs.gentoo.org/show_bug.cgi?id=882183
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>

3 files changed, 1029 insertions, 0 deletions

diff --git a/net-nds/openldap/files/openldap-2.4.59-atexit-fix.patch b/net-nds/openldap/files/openldap-2.4.59-atexit-fix.patch
new file mode 100644
index 000000000000..4ffee325275b
--- /dev/null
+++ b/net-nds/openldap/files/openldap-2.4.59-atexit-fix.patch
@@ -0,0 +1,60 @@
+Port upstream commit 337455eb3a66176cc3f66d2c663a72cc7b4178bd to 2.4.59.
+
+With 2.4.x, gentoo-infra saw crashes in nsscache during exit.
+This patch was later reverted upstream because it was not portable to AIX And
+was fixed in a different way in 2.5 & 2.6 releases.
+
+original https://github.com/openldap/openldap/commit/337455eb3a66176cc3f66d2c663a72cc7b4178bd
+revert: https://github.com/openldap/openldap/commit/5e13ef87a94491f9339dbca709db29e76741f1a9
+AIX discussion: https://bugs.openldap.org/show_bug.cgi?id=10176
+diff '--color=auto' -NuarwbB --exclude '*.rej' --exclude '*.orig' openldap-2.4.59.orig/libraries/libldap/init.c openldap-2.4.59/libraries/libldap/init.c
+--- openldap-2.4.59.orig/libraries/libldap/init.c	2021-06-03 11:40:31.000000000 -0700
++++ openldap-2.4.59/libraries/libldap/init.c	2024-08-24 11:15:06.727326650 -0700
+@@ -508,9 +508,6 @@
+ 		gopts->ldo_def_sasl_authcid = NULL;
+ 	}
+ #endif
+-#ifdef HAVE_TLS
+-	ldap_int_tls_destroy( gopts );
+-#endif
+ }
+
+ /*
+diff '--color=auto' -NuarwbB --exclude '*.rej' --exclude '*.orig' openldap-2.4.59.orig/libraries/libldap/tls2.c openldap-2.4.59/libraries/libldap/tls2.c
+--- openldap-2.4.59.orig/libraries/libldap/tls2.c	2024-08-24 11:14:46.910678897 -0700
++++ openldap-2.4.59/libraries/libldap/tls2.c	2024-08-24 11:15:38.103963402 -0700
+@@ -155,6 +155,14 @@
+ 	tls_imp->ti_tls_destroy();
+ }
+
++static void
++ldap_exit_tls_destroy( void )
++{
++	struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
++
++	ldap_int_tls_destroy( lo );
++}
++
+ /*
+  * Initialize a particular TLS implementation.
+  * Called once per implementation.
+@@ -163,6 +171,7 @@
+ tls_init(tls_impl *impl )
+ {
+ 	static int tls_initialized = 0;
++	int rc;
+
+ 	if ( !tls_initialized++ ) {
+ #ifdef LDAP_R_COMPILE
+@@ -175,7 +184,10 @@
+ #ifdef LDAP_R_COMPILE
+ 	impl->ti_thr_init();
+ #endif
+-	return impl->ti_tls_init();
++	rc = impl->ti_tls_init();
++
++	atexit( ldap_exit_tls_destroy );
++	return rc;
+ }
+
+ /*
diff --git a/net-nds/openldap/files/openldap-2.4.59-implicit-function.patch b/net-nds/openldap/files/openldap-2.4.59-implicit-function.patch
new file mode 100644
index 000000000000..ec7775c99dfa
--- /dev/null
+++ b/net-nds/openldap/files/openldap-2.4.59-implicit-function.patch
@@ -0,0 +1,41 @@
+--- openldap-2.4.59/servers/slapd/back-meta/conn.c	2021-06-03 11:40:31.000000000 -0700
++++ openldap-2.4.59/servers/slapd/back-meta/conn.c	2024-08-24 14:22:31.677357359 -0700
+@@ -31,6 +31,7 @@
+ 
+ #define AVL_INTERNAL
+ #include "slap.h"
++#include "proto-slap.h"
+ #include "../back-ldap/back-ldap.h"
+ #include "back-meta.h"
+ 
+--- openldap-2.4.59/servers/slapd/back-ldap/bind.c	2021-06-03 11:40:31.000000000 -0700
++++ openldap-2.4.59/servers/slapd/back-ldap/bind.c	2024-08-24 14:22:13.340701355 -0700
+@@ -31,6 +31,7 @@
+ 
+ #define AVL_INTERNAL
+ #include "slap.h"
++#include "proto-slap.h"
+ #include "back-ldap.h"
+ #include "lutil.h"
+ #include "lutil_ldap.h"
+--- openldap-2.4.59/servers/slapd/config.c	2021-06-03 11:40:31.000000000 -0700
++++ openldap-2.4.59/servers/slapd/config.c	2024-08-24 14:22:13.414034645 -0700
+@@ -43,6 +43,7 @@
+ #endif
+ 
+ #include "slap.h"
++#include "proto-slap.h"
+ #ifdef LDAP_SLAPI
+ #include "slapi/slapi.h"
+ #endif
+diff '--color=auto' -NuarwbB openldap-2.4.59.orig/servers/slapd/proto-slap.h openldap-2.4.59/servers/slapd/proto-slap.h
+--- openldap-2.4.59.orig/servers/slapd/proto-slap.h	2024-08-24 14:31:02.304109181 -0700
++++ openldap-2.4.59/servers/slapd/proto-slap.h	2024-08-24 14:31:18.004121208 -0700
+@@ -739,6 +739,7 @@
+ LDAP_SLAPD_F (int) bindconf_tls_set LDAP_P((
+ 	slap_bindconf *bc, LDAP *ld ));
+ LDAP_SLAPD_F (void) bindconf_free LDAP_P(( slap_bindconf *bc ));
++LDAP_SLAPD_F (void) slap_client_keepalive LDAP_P(( LDAP *ld, slap_keepalive *sk ));
+ LDAP_SLAPD_F (int) slap_client_connect LDAP_P(( LDAP **ldp, slap_bindconf *sb ));
+ LDAP_SLAPD_F (int) config_generic_wrapper LDAP_P(( Backend *be,
+ 	const char *fname, int lineno, int argc, char **argv ));
diff --git a/net-nds/openldap/openldap-2.4.59-r3.ebuild b/net-nds/openldap/openldap-2.4.59-r3.ebuild
new file mode 100644
index 000000000000..e553c3425988
--- /dev/null
+++ b/net-nds/openldap/openldap-2.4.59-r3.ebuild
@@ -0,0 +1,928 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+# Re cleanups:
+# 2.5.x is an LTS release so we want to keep it for a while.
+
+inherit autotools db-use flag-o-matic multilib multilib-minimal preserve-libs ssl-cert toolchain-funcs systemd tmpfiles
+
+BIS_PN=rfc2307bis.schema
+BIS_PV=20140524
+BIS_P="${BIS_PN}-${BIS_PV}"
+
+DESCRIPTION="LDAP suite of application and development tools"
+HOMEPAGE="https://www.OpenLDAP.org/"
+
+# upstream mirrors are mostly not working, using canonical URI
+SRC_URI="
+	https://openldap.org/software/download/OpenLDAP/openldap-release/${P}.tgz
+	http://gpl.savoirfairelinux.net/pub/mirrors/openldap/openldap-release/${P}.tgz
+	http://repository.linagora.org/OpenLDAP/openldap-release/${P}.tgz
+	http://mirror.eu.oneandone.net/software/openldap/openldap-release/${P}.tgz
+	mirror://gentoo/${BIS_P}"
+
+LICENSE="OPENLDAP GPL-2"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux"
+
+IUSE_DAEMON="crypt samba tcpd experimental minimal"
+IUSE_BACKEND="+berkdb"
+IUSE_OVERLAY="overlays perl"
+IUSE_OPTIONAL="gnutls iodbc sasl ssl odbc debug ipv6 +syslog selinux static-libs test"
+IUSE_CONTRIB="smbkrb5passwd kerberos kinit pbkdf2 sha2"
+IUSE_CONTRIB="${IUSE_CONTRIB} cxx"
+IUSE="${IUSE_DAEMON} ${IUSE_BACKEND} ${IUSE_OVERLAY} ${IUSE_OPTIONAL} ${IUSE_CONTRIB}"
+REQUIRED_USE="cxx? ( sasl )
+	pbkdf2? ( ssl )
+	test? ( berkdb )
+	?? ( test minimal )
+	kerberos? ( ?? ( kinit smbkrb5passwd ) )"
+RESTRICT="!test? ( test )"
+
+# always list newer first
+# Do not add any AGPL-3 BDB here!
+# See bug 525110, comment 15.
+# Advanced usage: OPENLDAP_BDB_SLOTS in the environment can be used to force a slot during build.
+BDB_SLOTS="${OPENLDAP_BDB_SLOTS:=5.3 4.8}"
+BDB_PKGS=''
+for _slot in $BDB_SLOTS; do BDB_PKGS="${BDB_PKGS} sys-libs/db:${_slot}" ; done
+
+# openssl is needed to generate lanman-passwords required by samba
+COMMON_DEPEND="
+	ssl? (
+		!gnutls? (
+			>=dev-libs/openssl-1.0.1h-r2:0=[${MULTILIB_USEDEP}]
+		)
+		gnutls? (
+			>=net-libs/gnutls-2.12.23-r6:=[${MULTILIB_USEDEP}]
+			>=dev-libs/libgcrypt-1.5.3:0=[${MULTILIB_USEDEP}]
+		)
+	)
+	sasl? ( dev-libs/cyrus-sasl:= )
+	!minimal? (
+		dev-libs/libltdl
+		sys-fs/e2fsprogs
+		>=dev-db/lmdb-0.9.18:=
+		crypt? ( virtual/libcrypt:= )
+		tcpd? ( sys-apps/tcp-wrappers )
+		odbc? ( !iodbc? ( dev-db/unixODBC )
+			iodbc? ( dev-db/libiodbc ) )
+		perl? ( dev-lang/perl:=[-build(-)] )
+		samba? (
+			dev-libs/openssl:0=
+		)
+		berkdb? (
+			<sys-libs/db-6.0:=
+			|| ( ${BDB_PKGS} )
+			)
+		smbkrb5passwd? (
+			dev-libs/openssl:0=
+			kerberos? ( app-crypt/heimdal )
+			)
+		kerberos? (
+			virtual/krb5
+			kinit? ( !app-crypt/heimdal )
+			)
+		cxx? ( dev-libs/cyrus-sasl:= )
+	)
+"
+DEPEND="${COMMON_DEPEND}
+	sys-apps/groff
+"
+RDEPEND="${COMMON_DEPEND}
+	selinux? ( sec-policy/selinux-ldap )
+"
+
+# The user/group are only used for running daemons which are
+# disabled in minimal builds, so elide the accounts too.
+BDEPEND="!minimal? (
+		acct-group/ldap
+		acct-user/ldap
+)
+"
+
+# for tracking versions
+OPENLDAP_VERSIONTAG=".version-tag"
+OPENLDAP_DEFAULTDIR_VERSIONTAG="/var/lib/openldap-data"
+
+MULTILIB_WRAPPED_HEADERS=(
+	# USE=cxx
+	/usr/include/LDAPAsynConnection.h
+	/usr/include/LDAPAttrType.h
+	/usr/include/LDAPAttribute.h
+	/usr/include/LDAPAttributeList.h
+	/usr/include/LDAPConnection.h
+	/usr/include/LDAPConstraints.h
+	/usr/include/LDAPControl.h
+	/usr/include/LDAPControlSet.h
+	/usr/include/LDAPEntry.h
+	/usr/include/LDAPEntryList.h
+	/usr/include/LDAPException.h
+	/usr/include/LDAPExtResult.h
+	/usr/include/LDAPMessage.h
+	/usr/include/LDAPMessageQueue.h
+	/usr/include/LDAPModList.h
+	/usr/include/LDAPModification.h
+	/usr/include/LDAPObjClass.h
+	/usr/include/LDAPRebind.h
+	/usr/include/LDAPRebindAuth.h
+	/usr/include/LDAPReferenceList.h
+	/usr/include/LDAPResult.h
+	/usr/include/LDAPSaslBindResult.h
+	/usr/include/LDAPSchema.h
+	/usr/include/LDAPSearchReference.h
+	/usr/include/LDAPSearchResult.h
+	/usr/include/LDAPSearchResults.h
+	/usr/include/LDAPUrl.h
+	/usr/include/LDAPUrlList.h
+	/usr/include/LdifReader.h
+	/usr/include/LdifWriter.h
+	/usr/include/SaslInteraction.h
+	/usr/include/SaslInteractionHandler.h
+	/usr/include/StringList.h
+	/usr/include/TlsOptions.h
+)
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-2.4.17-gcc44.patch
+
+	"${FILESDIR}"/${PN}-2.2.14-perlthreadsfix.patch
+	"${FILESDIR}"/${PN}-2.4.15-ppolicy.patch
+
+	# bug #116045 - still present in 2.4.28
+	"${FILESDIR}"/${PN}-2.4.35-contrib-smbk5pwd.patch
+	# bug #408077 - samba4
+	"${FILESDIR}"/${PN}-2.4.35-contrib-samba4.patch
+
+	# bug #189817
+	"${FILESDIR}"/${PN}-2.4.11-libldap_r.patch
+
+	# bug #233633
+	"${FILESDIR}"/${PN}-2.4.45-fix-lmpasswd-gnutls-symbols.patch
+
+	# bug #281495
+	"${FILESDIR}"/${PN}-2.4.28-gnutls-gcrypt.patch
+
+	# bug #294350
+	"${FILESDIR}"/${PN}-2.4.6-evolution-ntlm.patch
+
+	# unbreak /bin/sh -> dash
+	"${FILESDIR}"/${PN}-2.4.28-fix-dash.patch
+
+	# bug #420959
+	"${FILESDIR}"/${PN}-2.4.31-gcc47.patch
+
+	# unbundle lmdb
+	"${FILESDIR}"/${PN}-2.4.42-mdb-unbundle.patch
+
+	# fix some compiler warnings
+	"${FILESDIR}"/${PN}-2.4.47-warnings.patch
+
+	# Atexit segfault
+	"${FILESDIR}"/${PN}-2.4.59-atexit-fix.patch
+
+	# implicit function defs
+	"${FILESDIR}"/${PN}-2.6.1-cloak.patch
+	"${FILESDIR}"/${PN}-2.4.59-implicit-function.patch
+)
+
+openldap_filecount() {
+	local dir="$1"
+	find "${dir}" -type f ! -name '.*' ! -name 'DB_CONFIG*' | wc -l
+}
+
+openldap_find_versiontags() {
+	# scan for all datadirs
+	local openldap_datadirs=()
+	if [[ -f "${EROOT}"/etc/openldap/slapd.conf ]]; then
+		openldap_datadirs=( $(awk '{if($1 == "directory") print $2 }' "${EROOT}"/etc/openldap/slapd.conf) )
+	fi
+	openldap_datadirs+=( ${OPENLDAP_DEFAULTDIR_VERSIONTAG} )
+
+	einfo
+	einfo "Scanning datadir(s) from slapd.conf and"
+	einfo "the default installdir for Versiontags"
+	einfo "(${OPENLDAP_DEFAULTDIR_VERSIONTAG} may appear twice)"
+	einfo
+
+	# scan datadirs if we have a version tag
+	openldap_found_tag=0
+	have_files=0
+	for each in ${openldap_datadirs[@]} ; do
+		CURRENT_TAGDIR="${ROOT}$(sed "s:\/::" <<< ${each})"
+		CURRENT_TAG="${CURRENT_TAGDIR}/${OPENLDAP_VERSIONTAG}"
+		if [[ -d "${CURRENT_TAGDIR}" ]] && [[ "${openldap_found_tag}" == 0 ]] ; then
+			einfo "- Checking ${each}..."
+			if [[ -r "${CURRENT_TAG}" ]] ; then
+				# yey, we have one :)
+				einfo "   Found Versiontag in ${each}"
+				source "${CURRENT_TAG}"
+				if [[ "${OLDPF}" == "" ]] ; then
+					eerror "Invalid Versiontag found in ${CURRENT_TAGDIR}"
+					eerror "Please delete it"
+					eerror
+					die "Please kill the invalid versiontag in ${CURRENT_TAGDIR}"
+				fi
+
+				OLD_MAJOR=$(ver_cut 2-3 ${OLDPF})
+
+				[[ "$(openldap_filecount ${CURRENT_TAGDIR})" -gt 0 ]] && have_files=1
+
+				# are we on the same branch?
+				if [[ "${OLD_MAJOR}" != "${PV:0:3}" ]] ; then
+					ewarn "   Versiontag doesn't match current major release!"
+					if [[ "${have_files}" == "1" ]] ; then
+						eerror "   Versiontag says other major and you (probably) have datafiles!"
+						echo
+						openldap_upgrade_howto
+					else
+						einfo "   No real problem, seems there's no database."
+					fi
+				else
+					einfo "   Versiontag is fine here :)"
+				fi
+			else
+				einfo "   Non-tagged dir ${each}"
+				[[ "$(openldap_filecount ${each})" -gt 0 ]] && have_files=1
+				if [[ "${have_files}" == "1" ]] ; then
+					einfo "   EEK! Non-empty non-tagged datadir, counting `ls -a ${each} | wc -l` files"
+					echo
+
+					eerror
+					eerror "Your OpenLDAP Installation has a non tagged datadir that"
+					eerror "possibly contains a database at ${CURRENT_TAGDIR}"
+					eerror
+					eerror "Please export data if any entered and empty or remove"
+					eerror "the directory, installation has been stopped so you"
+					eerror "can take required action"
+					eerror
+					eerror "For a HOWTO on exporting the data, see instructions in the ebuild"
+					eerror
+					openldap_upgrade_howto
+					die "Please move the datadir ${CURRENT_TAGDIR} away"
+				fi
+			fi
+			einfo
+		fi
+	done
+	[[ "${have_files}" == "1" ]] && einfo "DB files present" || einfo "No DB files present"
+
+	# Now we must check for the major version of sys-libs/db linked against.
+	SLAPD_PATH="${EROOT}/usr/$(get_libdir)/openldap/slapd"
+	if [[ "${have_files}" == "1" ]] && [[ -f "${SLAPD_PATH}" ]]; then
+		OLDVER="$(/usr/bin/ldd ${SLAPD_PATH} \
+			| awk '/libdb-/{gsub("^libdb-","",$1);gsub(".so$","",$1);print $1}')"
+		if use berkdb; then
+			# find which one would be used
+			for bdb_slot in ${BDB_SLOTS} ; do
+				NEWVER="$(db_findver "=sys-libs/db-${bdb_slot}*")"
+				[[ -n "${NEWVER}" ]] && break
+			done
+		fi
+		local fail=0
+		if [[ -z "${OLDVER}" ]] && [[ -z "${NEWVER}" ]]; then
+			:
+			# Nothing wrong here.
+		elif [[ -z "${OLDVER}" ]] && [[ -n "${NEWVER}" ]]; then
+			eerror "	Your existing version of OpenLDAP was not built against"
+			eerror "	any version of sys-libs/db, but the new one will build"
+			eerror "	against	${NEWVER} and your database may be inaccessible."
+			echo
+			fail=1
+		elif [[ -n "${OLDVER}" ]] && [[ -z "${NEWVER}" ]]; then
+			eerror "	Your existing version of OpenLDAP was built against"
+			eerror "	sys-libs/db:${OLDVER}, but the new one will not be"
+			eerror "	built against any version and your database may be"
+			eerror "	inaccessible."
+			echo
+			fail=1
+		elif [[ "${OLDVER}" != "${NEWVER}" ]]; then
+			eerror "	Your existing version of OpenLDAP was built against"
+			eerror "	sys-libs/db:${OLDVER}, but the new one will build against"
+			eerror "	${NEWVER} and your database would be inaccessible."
+			echo
+			fail=1
+		fi
+		[[ "${fail}" == "1" ]] && openldap_upgrade_howto
+	fi
+
+	echo
+	einfo
+	einfo "All datadirs are fine, proceeding with merge now..."
+	einfo
+}
+
+openldap_upgrade_howto() {
+	local d l i
+	eerror
+	eerror "A (possible old) installation of OpenLDAP was detected,"
+	eerror "installation will not proceed for now."
+	eerror
+	eerror "As major version upgrades can corrupt your database,"
+	eerror "you need to dump your database and re-create it afterwards."
+	eerror
+	eerror "Additionally, rebuilding against different major versions of the"
+	eerror "sys-libs/db libraries will cause your database to be inaccessible."
+	eerror ""
+	d="$(date -u +%s)"
+	l="/root/ldapdump.${d}"
+	i="${l}.raw"
+	eerror " 1. /etc/init.d/slapd stop"
+	eerror " 2. slapcat -l ${i}"
+	eerror " 3. grep -E -v '^(entry|context)CSN:' <${i} >${l}"
+	eerror " 4. mv /var/lib/openldap-data/ /var/lib/openldap-data-backup/"
+	eerror " 5. emerge --update \=net-nds/${PF}"
+	eerror " 6. etc-update, and ensure that you apply the changes"
+	eerror " 7. slapadd -l ${l}"
+	eerror " 8. chown ldap:ldap /var/lib/openldap-data/*"
+	eerror " 9. /etc/init.d/slapd start"
+	eerror "10. check that your data is intact."
+	eerror "11. set up the new replication system."
+	eerror
+	if [[ "${FORCE_UPGRADE}" != "1" ]]; then
+		die "You need to upgrade your database first"
+	else
+		eerror "You have the magical FORCE_UPGRADE=1 in place."
+		eerror "Don't say you weren't warned about data loss."
+	fi
+}
+
+pkg_setup() {
+	if ! use sasl && use cxx ; then
+		die "To build the ldapc++ library you must emerge openldap with sasl support"
+	fi
+	# Bug #322787
+	if use minimal && ! has_version "net-nds/openldap" ; then
+		einfo "No datadir scan needed, openldap not installed"
+	elif use minimal && has_version 'net-nds/openldap[minimal]' ; then
+		einfo "Skipping scan for previous datadirs as requested by minimal useflag"
+	else
+		openldap_find_versiontags
+	fi
+}
+
+src_prepare() {
+	# ensure correct SLAPI path by default
+	sed -e 's,\(#define LDAPI_SOCK\).*,\1 "'"${EPREFIX}"'/var/run/openldap/slapd.sock",' \
+		-i include/ldap_defaults.h || die
+
+	default
+	rm -r libraries/liblmdb || die
+
+	pushd build &>/dev/null || die "pushd build"
+	einfo "Making sure upstream build strip does not do stripping too early"
+	sed -i.orig \
+		-e '/^STRIP/s,-s,,g' \
+		top.mk || die "Failed to block stripping"
+	popd &>/dev/null || die
+
+	# wrong assumption that /bin/sh is /bin/bash
+	sed \
+		-e 's|/bin/sh|/bin/bash|g' \
+		-i tests/scripts/* || die "sed failed"
+
+	# Required for autoconf-2.70 #765043
+	sed 's@^AM_INIT_AUTOMAKE.*@AC_PROG_MAKE_SET@' -i configure.in || die
+	AT_NOEAUTOMAKE=yes eautoreconf
+}
+
+build_contrib_module() {
+	# <dir> <sources> <outputname>
+	pushd "${S}/contrib/slapd-modules/$1" &>/dev/null || die "pushd contrib/slapd-modules/$1"
+	einfo "Compiling contrib-module: $3"
+	# Make sure it's uppercase
+	local define_name="$(LC_ALL=C tr '[:lower:]' '[:upper:]' <<< "SLAPD_OVER_${1}")"
+	"${lt}" --mode=compile --tag=CC \
+		"${CC}" \
+		-D${define_name}=SLAPD_MOD_DYNAMIC \
+		-I"${BUILD_DIR}"/include \
+		-I../../../include -I../../../servers/slapd ${CFLAGS} \
+		-o ${2%.c}.lo -c $2 || die "compiling $3 failed"
+	einfo "Linking contrib-module: $3"
+	"${lt}" --mode=link --tag=CC \
+		"${CC}" -module \
+		${CFLAGS} \
+		${LDFLAGS} \
+		-rpath "${EPREFIX}"/usr/$(get_libdir)/openldap/openldap \
+		-o $3.la ${2%.c}.lo || die "linking $3 failed"
+	popd &>/dev/null || die
+}
+
+src_configure() {
+	if use experimental ; then
+		# connectionless ldap per bug #342439
+		# connectionless is a unsupported feature according to Howard Chu
+		# see https://bugs.openldap.org/show_bug.cgi?id=9739
+		# (see also bug #892009)
+		append-flags -DLDAP_CONNECTIONLESS
+	fi
+
+	# The configure scripts make some assumptions that aren't valid in newer GCC.
+	# https://bugs.gentoo.org/920380
+	append-flags $(test-flags-CC -Wno-error=implicit-int)
+	# conftest.c:113:16: error: passing argument 1 of 'pthread_detach' makes integer from pointer without a cast [-Wint-conversion]
+	append-flags $(test-flags-CC -Wno-error=int-conversion)
+	# error: passing argument 3 of ‘ldap_bv2rdn’ from incompatible pointer type [-Wincompatible-pointer-types]
+	# expected ‘char **’ but argument is of type ‘const char **’
+	append-flags $(test-flags-CC -Wno-error=incompatible-pointer-types)
+
+	multilib-minimal_src_configure
+}
+
+multilib_src_configure() {
+	local myconf=()
+
+	use debug && myconf+=( $(use_enable debug) )
+
+	# ICU exists only in the configure, nowhere in the codebase, bug #510858
+	export ac_cv_header_unicode_utypes_h=no ol_cv_lib_icu=no
+
+	if ! use minimal && multilib_is_native_abi; then
+		local CPPFLAGS=${CPPFLAGS}
+
+		# re-enable serverside overlay chains per bug #296567
+		# see ldap docs chaper 12.3.1 for details
+		myconf+=( --enable-ldap )
+
+		# backends
+		myconf+=( --enable-slapd )
+		if use berkdb ; then
+			einfo "Using Berkeley DB for local backend"
+			myconf+=( --enable-bdb --enable-hdb )
+			DBINCLUDE=$(db_includedir ${BDB_SLOTS})
+			einfo "Using ${DBINCLUDE} for sys-libs/db version"
+			# We need to include the slotted db.h dir for FreeBSD
+			append-cppflags -I${DBINCLUDE}
+		else
+			myconf+=( --disable-bdb --disable-hdb )
+		fi
+		for backend in dnssrv ldap mdb meta monitor null passwd relay shell sock; do
+			myconf+=( --enable-${backend}=mod )
+		done
+
+		myconf+=( $(use_enable perl perl mod) )
+
+		myconf+=( $(use_enable odbc sql mod) )
+		if use odbc ; then
+			local odbc_lib="unixodbc"
+			if use iodbc ; then
+				odbc_lib="iodbc"
+				append-cppflags -I"${EPREFIX}"/usr/include/iodbc
+			fi
+			myconf+=( --with-odbc=${odbc_lib} )
+		fi
+
+		# slapd options
+		myconf+=(
+			$(use_enable crypt)
+			--disable-slp
+			$(use_enable samba lmpasswd)
+			$(use_enable syslog)
+		)
+		if use experimental ; then
+			myconf+=(
+				--enable-dynacl
+				--enable-aci=mod
+			)
+		fi
+		for option in aci cleartext modules rewrite rlookups slapi; do
+			myconf+=( --enable-${option} )
+		done
+
+		# slapd overlay options
+		# Compile-in the syncprov, the others as module
+		myconf+=( --enable-syncprov=yes )
+		use overlays && myconf+=( --enable-overlays=mod )
+
+	else
+		myconf+=(
+			--disable-backends
+			--disable-slapd
+			--disable-bdb
+			--disable-hdb
+			--disable-mdb
+			--disable-overlays
+			--disable-syslog
+		)
+	fi
+
+	# basic functionality stuff
+	myconf+=(
+		$(use_enable ipv6)
+		$(multilib_native_use_with sasl cyrus-sasl)
+		$(multilib_native_use_enable sasl spasswd)
+		$(use_enable tcpd wrappers)
+	)
+
+	# Some cross-compiling tests don't pan out well.
+	tc-is-cross-compiler && myconf+=(
+		--with-yielding-select=yes
+	)
+
+	local ssl_lib="no"
+	if use ssl || ( ! use minimal && use samba ) ; then
+		ssl_lib="openssl"
+		use gnutls && ssl_lib="gnutls"
+	fi
+
+	myconf+=( --with-tls=${ssl_lib} )
+
+	for basicflag in dynamic local proctitle shared; do
+		myconf+=( --enable-${basicflag} )
+	done
+
+	tc-export AR CC CXX
+	CONFIG_SHELL="/bin/sh" \
+	ECONF_SOURCE="${S}" \
+	STRIP=/bin/true \
+	econf \
+		--libexecdir="${EPREFIX}"/usr/$(get_libdir)/openldap \
+		$(use_enable static-libs static) \
+		"${myconf[@]}"
+	emake depend
+}
+
+src_configure_cxx() {
+	# This needs the libraries built by the first build run.
+	# So we have to run it AFTER the main build, not just after the main
+	# configure.
+	local myconf_ldapcpp=(
+		--with-ldap-includes="${S}"/include
+	)
+
+	mkdir -p "${BUILD_DIR}"/contrib/ldapc++ || die
+	pushd "${BUILD_DIR}/contrib/ldapc++" &>/dev/null || die "pushd contrib/ldapc++"
+
+	local LDFLAGS=${LDFLAGS} CPPFLAGS=${CPPFLAGS}
+	append-ldflags -L"${BUILD_DIR}"/libraries/liblber/.libs \
+		-L"${BUILD_DIR}"/libraries/libldap/.libs
+	append-cppflags -I"${BUILD_DIR}"/include
+	ECONF_SOURCE=${S}/contrib/ldapc++ \
+	econf "${myconf_ldapcpp[@]}" \
+		CC="${CC}" \
+		CXX="${CXX}"
+	popd &>/dev/null || die
+}
+
+multilib_src_compile() {
+	tc-export AR CC CXX
+	emake CC="${CC}" AR="${AR}" SHELL="${EPREFIX}"/bin/sh
+	local lt="${BUILD_DIR}/libtool"
+	export echo="echo"
+
+	if ! use minimal && multilib_is_native_abi ; then
+		if use cxx ; then
+			einfo "Building contrib library: ldapc++"
+			src_configure_cxx
+			pushd "${BUILD_DIR}/contrib/ldapc++" &>/dev/null || die "pushd contrib/ldapc++"
+			emake CC="${CC}" CXX="${CXX}"
+			popd &>/dev/null || die
+		fi
+
+		if use smbkrb5passwd ; then
+			einfo "Building contrib-module: smbk5pwd"
+			pushd "${S}/contrib/slapd-modules/smbk5pwd" &>/dev/null || die "pushd contrib/slapd-modules/smbk5pwd"
+
+			MY_DEFS="-DDO_SHADOW"
+			if use samba ; then
+				MY_DEFS="${MY_DEFS} -DDO_SAMBA"
+				MY_KRB5_INC=""
+			fi
+			if use kerberos ; then
+				MY_DEFS="${MY_DEFS} -DDO_KRB5"
+				MY_KRB5_INC="$(krb5-config --cflags)"
+			fi
+
+			emake \
+				DEFS="${MY_DEFS}" \
+				KRB5_INC="${MY_KRB5_INC}" \
+				LDAP_BUILD="${BUILD_DIR}" \
+				CC="${CC}" libexecdir="${EPREFIX}/usr/$(get_libdir)/openldap"
+			popd &>/dev/null || die
+		fi
+
+		if use overlays ; then
+			einfo "Building contrib-module: samba4"
+			pushd "${S}/contrib/slapd-modules/samba4" &>/dev/null || die "pushd contrib/slapd-modules/samba4"
+
+			emake \
+				LDAP_BUILD="${BUILD_DIR}" \
+				CC="${CC}" libexecdir="/usr/$(get_libdir)/openldap"
+			popd &>/dev/null || die
+		fi
+
+		if use kerberos ; then
+			if use kinit ; then
+				build_contrib_module "kinit" "kinit.c" "kinit"
+			fi
+			pushd "${S}/contrib/slapd-modules/passwd" &>/dev/null || die "pushd contrib/slapd-modules/passwd"
+			einfo "Compiling contrib-module: pw-kerberos"
+			"${lt}" --mode=compile --tag=CC \
+				"${CC}" \
+				-I"${BUILD_DIR}"/include \
+				-I../../../include \
+				${CFLAGS} \
+				$(krb5-config --cflags) \
+				-DHAVE_KRB5 \
+				-o kerberos.lo \
+				-c kerberos.c || die "compiling pw-kerberos failed"
+			einfo "Linking contrib-module: pw-kerberos"
+			"${lt}" --mode=link --tag=CC \
+				"${CC}" -module \
+				${CFLAGS} \
+				${LDFLAGS} \
+				-rpath "${EPREFIX}"/usr/$(get_libdir)/openldap/openldap \
+				-o pw-kerberos.la \
+				kerberos.lo || die "linking pw-kerberos failed"
+			popd &>/dev/null || die
+		fi
+
+		if use pbkdf2; then
+			pushd "${S}/contrib/slapd-modules/passwd/pbkdf2" &>/dev/null || die "pushd contrib/slapd-modules/passwd/pbkdf2"
+			einfo "Compiling contrib-module: pw-pbkdf2"
+			"${lt}" --mode=compile --tag=CC \
+				"${CC}" \
+				-I"${BUILD_DIR}"/include \
+				-I../../../../include \
+				${CFLAGS} \
+				-o pbkdf2.lo \
+				-c pw-pbkdf2.c || die "compiling pw-pbkdf2 failed"
+			einfo "Linking contrib-module: pw-pbkdf2"
+			"${lt}" --mode=link --tag=CC \
+				"${CC}" -module \
+				${CFLAGS} \
+				${LDFLAGS} \
+				-rpath "${EPREFIX}"/usr/$(get_libdir)/openldap/openldap \
+				-o pw-pbkdf2.la \
+				pbkdf2.lo || die "linking pw-pbkdf2 failed"
+			popd &>/dev/null || die
+		fi
+
+		if use sha2 ; then
+			pushd "${S}/contrib/slapd-modules/passwd/sha2" &>/dev/null || die "pushd contrib/slapd-modules/passwd/sha2"
+			einfo "Compiling contrib-module: pw-sha2"
+			"${lt}" --mode=compile --tag=CC \
+				"${CC}" \
+				-I"${BUILD_DIR}"/include \
+				-I../../../../include \
+				${CFLAGS} \
+				-o sha2.lo \
+				-c sha2.c || die "compiling pw-sha2 failed"
+			"${lt}" --mode=compile --tag=CC \
+				"${CC}" \
+				-I"${BUILD_DIR}"/include \
+				-I../../../../include \
+				${CFLAGS} \
+				-o slapd-sha2.lo \
+				-c slapd-sha2.c || die "compiling pw-sha2 failed"
+			einfo "Linking contrib-module: pw-sha2"
+			"${lt}" --mode=link --tag=CC \
+				"${CC}" -module \
+				${CFLAGS} \
+				${LDFLAGS} \
+				-rpath "${EPREFIX}"/usr/$(get_libdir)/openldap/openldap \
+				-o pw-sha2.la \
+				sha2.lo slapd-sha2.lo || die "linking pw-sha2 failed"
+			popd &>/dev/null || die
+		fi
+
+		# We could build pw-radius if GNURadius would install radlib.h
+		pushd "${S}/contrib/slapd-modules/passwd" &>/dev/null || die "pushd contrib/slapd-modules/passwd"
+		einfo "Compiling contrib-module: pw-netscape"
+		"${lt}" --mode=compile --tag=CC \
+			"${CC}" \
+			-I"${BUILD_DIR}"/include \
+			-I../../../include \
+			${CFLAGS} \
+			-o netscape.lo \
+			-c netscape.c || die "compiling pw-netscape failed"
+		einfo "Linking contrib-module: pw-netscape"
+		"${lt}" --mode=link --tag=CC \
+			"${CC}" -module \
+			${CFLAGS} \
+			${LDFLAGS} \
+			-rpath "${EPREFIX}"/usr/$(get_libdir)/openldap/openldap \
+			-o pw-netscape.la \
+			netscape.lo || die "linking pw-netscape failed"
+
+		#build_contrib_module "acl" "posixgroup.c" "posixGroup" # example code only
+		#build_contrib_module "acl" "gssacl.c" "gss" # example code only, also needs kerberos
+		build_contrib_module "addpartial" "addpartial-overlay.c" "addpartial-overlay"
+		build_contrib_module "allop" "allop.c" "overlay-allop"
+		build_contrib_module "allowed" "allowed.c" "allowed"
+		build_contrib_module "autogroup" "autogroup.c" "autogroup"
+		build_contrib_module "cloak" "cloak.c" "cloak"
+		# build_contrib_module "comp_match" "comp_match.c" "comp_match" # really complex, adds new external deps, questionable demand
+		build_contrib_module "denyop" "denyop.c" "denyop-overlay"
+		build_contrib_module "dsaschema" "dsaschema.c" "dsaschema-plugin"
+		build_contrib_module "dupent" "dupent.c" "dupent"
+		build_contrib_module "lastbind" "lastbind.c" "lastbind"
+		# lastmod may not play well with other overlays
+		build_contrib_module "lastmod" "lastmod.c" "lastmod"
+		build_contrib_module "noopsrch" "noopsrch.c" "noopsrch"
+		#build_contrib_module "nops" "nops.c" "nops-overlay" https://bugs.gentoo.org/641576
+		#build_contrib_module "nssov" "nssov.c" "nssov-overlay" RESO:LATER
+		build_contrib_module "trace" "trace.c" "trace"
+		popd &>/dev/null || die
+		# build slapi-plugins
+		pushd "${S}/contrib/slapi-plugins/addrdnvalues" &>/dev/null || die "pushd contrib/slapi-plugins/addrdnvalues"
+		einfo "Building contrib-module: addrdnvalues plugin"
+		"${CC}" -shared \
+			-I"${BUILD_DIR}"/include \
+			-I../../../include \
+			${CFLAGS} \
+			-fPIC \
+			${LDFLAGS} \
+			-o libaddrdnvalues-plugin.so \
+			addrdnvalues.c || die "Building libaddrdnvalues-plugin.so failed"
+		popd &>/dev/null || die
+	fi
+}
+
+multilib_src_test() {
+	if multilib_is_native_abi; then
+		cd tests || die
+		emake tests
+	fi
+}
+
+multilib_src_install() {
+	local lt="${BUILD_DIR}/libtool"
+	emake DESTDIR="${D}" SHELL="${EPREFIX}"/bin/sh install
+
+	if ! use minimal && multilib_is_native_abi; then
+		# openldap modules go here
+		# TODO: write some code to populate slapd.conf with moduleload statements
+		keepdir /usr/$(get_libdir)/openldap/openldap/
+
+		# initial data storage dir
+		keepdir /var/lib/openldap-data
+		use prefix || fowners ldap:ldap /var/lib/openldap-data
+		fperms 0700 /var/lib/openldap-data
+
+		echo "OLDPF='${PF}'" > "${ED}${OPENLDAP_DEFAULTDIR_VERSIONTAG}/${OPENLDAP_VERSIONTAG}"
+		echo "# do NOT delete this. it is used"	>> "${ED}${OPENLDAP_DEFAULTDIR_VERSIONTAG}/${OPENLDAP_VERSIONTAG}"
+		echo "# to track versions for upgrading." >> "${ED}${OPENLDAP_DEFAULTDIR_VERSIONTAG}/${OPENLDAP_VERSIONTAG}"
+
+		# use our config
+		rm "${ED}"/etc/openldap/slapd.conf
+		insinto /etc/openldap
+		newins "${FILESDIR}"/${PN}-2.4.40-slapd-conf slapd.conf
+		configfile="${ED}"/etc/openldap/slapd.conf
+
+		# populate with built backends
+		einfo "populate config with built backends"
+		for x in "${ED}"/usr/$(get_libdir)/openldap/openldap/back_*.so; do
+			einfo "Adding $(basename ${x})"
+			sed -e "/###INSERTDYNAMICMODULESHERE###$/a# moduleload\t$(basename ${x})" -i "${configfile}" || die
+		done
+		sed -e "s:###INSERTDYNAMICMODULESHERE###$:# modulepath\t${EPREFIX}/usr/$(get_libdir)/openldap/openldap:" -i "${configfile}"
+		use prefix || fowners root:ldap /etc/openldap/slapd.conf
+		fperms 0640 /etc/openldap/slapd.conf
+		cp "${configfile}" "${configfile}".default || die
+
+		# install our own init scripts and systemd unit files
+		einfo "Install init scripts"
+		sed -e "s,/usr/lib/,/usr/$(get_libdir)/," "${FILESDIR}"/slapd-initd-2.4.40-r2 > "${T}"/slapd || die
+		doinitd "${T}"/slapd
+		newconfd "${FILESDIR}"/slapd-confd-2.4.28-r1 slapd
+
+		einfo "Install systemd service"
+		sed -e "s,/usr/lib/,/usr/$(get_libdir)/," "${FILESDIR}"/slapd.service > "${T}"/slapd.service || die
+		systemd_dounit "${T}"/slapd.service
+		systemd_install_serviced "${FILESDIR}"/slapd.service.conf
+		newtmpfiles "${FILESDIR}"/slapd.tmpfilesd slapd.conf
+
+		# If built without SLP, we don't need to be before avahi
+			sed -i \
+				-e '/before/{s/avahi-daemon//g}' \
+				"${ED}"/etc/init.d/slapd \
+				|| die
+
+		if use cxx ; then
+			einfo "Install the ldapc++ library"
+			cd "${BUILD_DIR}/contrib/ldapc++" || die
+			emake DESTDIR="${D}" libexecdir="${EPREFIX}/usr/$(get_libdir)/openldap" install
+			cd "${S}"/contrib/ldapc++ || die
+			newdoc README ldapc++-README
+		fi
+
+		if use smbkrb5passwd ; then
+			einfo "Install the smbk5pwd module"
+			cd "${S}/contrib/slapd-modules/smbk5pwd" || die
+			emake DESTDIR="${D}" \
+				LDAP_BUILD="${BUILD_DIR}" \
+				libexecdir="${EPREFIX}/usr/$(get_libdir)/openldap" install
+			newdoc README smbk5pwd-README
+		fi
+
+		if use overlays ; then
+			einfo "Install the samba4 module"
+			cd "${S}/contrib/slapd-modules/samba4" || die
+			emake DESTDIR="${D}" \
+				LDAP_BUILD="${BUILD_DIR}" \
+				libexecdir="/usr/$(get_libdir)/openldap" install
+			newdoc README samba4-README
+		fi
+
+		einfo "Installing contrib modules"
+		cd "${S}/contrib/slapd-modules" || die
+		for l in */*.la */*/*.la; do
+			[[ -e ${l} ]] || continue
+			"${lt}" --mode=install cp ${l} \
+				"${ED}"/usr/$(get_libdir)/openldap/openldap || \
+				die "installing ${l} failed"
+		done
+
+		dodoc "${FILESDIR}"/DB_CONFIG.fast.example
+		docinto contrib
+		doman */*.5
+		#newdoc acl/README*
+		newdoc addpartial/README addpartial-README
+		newdoc allop/README allop-README
+		newdoc allowed/README allowed-README
+		newdoc autogroup/README autogroup-README
+		newdoc dsaschema/README dsaschema-README
+		newdoc passwd/README passwd-README
+		cd "${S}/contrib/slapi-plugins" || die
+		insinto /usr/$(get_libdir)/openldap/openldap
+		doins */*.so
+		docinto contrib
+		newdoc addrdnvalues/README addrdnvalues-README
+
+		insinto /etc/openldap/schema
+		newins "${DISTDIR}"/${BIS_P} ${BIS_PN}
+
+		docinto back-sock ; dodoc "${S}"/servers/slapd/back-sock/searchexample*
+		docinto back-shell ; dodoc "${S}"/servers/slapd/back-shell/searchexample*
+		docinto back-perl ; dodoc "${S}"/servers/slapd/back-perl/SampleLDAP.pm
+
+		dosbin "${S}"/contrib/slapd-tools/statslog
+		newdoc "${S}"/contrib/slapd-tools/README README.statslog
+	fi
+
+	if ! use static-libs ; then
+		find "${ED}" \( -name '*.a' -o -name '*.la' \) -delete || die
+	fi
+}
+
+multilib_src_install_all() {
+	dodoc ANNOUNCEMENT CHANGES COPYRIGHT README
+	docinto rfc ; dodoc doc/rfc/*.txt
+}
+
+pkg_preinst() {
+	# keep old libs if any
+	preserve_old_lib /usr/$(get_libdir)/{liblber,libldap_r,liblber}-2.3$(get_libname 0)
+	# bug 440470, only display the getting started help there was no openldap before,
+	# or we are going to a non-minimal build
+	! has_version net-nds/openldap || has_version 'net-nds/openldap[minimal]'
+	OPENLDAP_PRINT_MESSAGES=$((! $?))
+}
+
+pkg_postinst() {
+	if ! use minimal ; then
+		tmpfiles_process slapd.conf
+
+		# You cannot build SSL certificates during src_install that will make
+		# binary packages containing your SSL key, which is both a security risk
+		# and a misconfiguration if multiple machines use the same key and cert.
+		if use ssl; then
+			install_cert /etc/openldap/ssl/ldap
+			use prefix || chown ldap:ldap "${EROOT}"/etc/openldap/ssl/ldap.*
+			ewarn "Self-signed SSL certificates are treated harshly by OpenLDAP 2.[12]"
+			ewarn "Self-signed SSL certificates are treated harshly by OpenLDAP 2.[12]"
+			ewarn "add 'TLS_REQCERT allow' if you want to use them."
+		fi
+
+		if use prefix; then
+			# Warn about prefix issues with slapd
+			eerror "slapd might NOT be usable on Prefix systems as it requires root privileges"
+			eerror "to start up, and requires that certain files directories be owned by"
+			eerror "ldap:ldap.  As Prefix does not support changing ownership of files and"
+			eerror "directories, you will have to manually fix this yourself."
+		fi
+
+		# These lines force the permissions of various content to be correct
+		if [[ -d "${EROOT}"/var/run/openldap ]]; then
+			use prefix || { chown ldap:ldap "${EROOT}"/var/run/openldap || die; }
+			chmod 0755 "${EROOT}"/var/run/openldap || die
+		fi
+		use prefix || chown root:ldap "${EROOT}"/etc/openldap/slapd.conf{,.default}
+		chmod 0640 "${EROOT}"/etc/openldap/slapd.conf{,.default} || die
+		use prefix || chown ldap:ldap "${EROOT}"/var/lib/openldap-data
+	fi
+
+	if has_version 'net-nds/openldap[-minimal]' && ((${OPENLDAP_PRINT_MESSAGES})); then
+		elog "Getting started using OpenLDAP? There is some documentation available:"
+		elog "Gentoo Guide to OpenLDAP Authentication"
+		elog "(https://wiki.gentoo.org/wiki/Centralized_authentication_using_OpenLDAP)"
+		elog "---"
+		elog "An example file for tuning BDB backends with openldap is"
+		elog "DB_CONFIG.fast.example in /usr/share/doc/${PF}/"
+	fi
+
+	preserve_old_lib_notify /usr/$(get_libdir)/{liblber,libldap,libldap_r}-2.3$(get_libname 0)
+}