mail-mta/opensmtpd: Build fixes

Fixes some build issues:

* Build failure on musl systems
* Build failure with clang-16
* Uses AM_PROG_AR to find ar(1) during configure
* Uses configure arguments to find libevent and libssl on multilib
  systems.

Closes: https://bugs.gentoo.org/720782
Closes: https://bugs.gentoo.org/727260
Closes: https://bugs.gentoo.org/739876
Closes: https://bugs.gentoo.org/896050
Closes: https://bugs.gentoo.org/899876
Upstream-Issue: https://github.com/OpenSMTPD/OpenSMTPD/issues/1065
Upstream-PR: https://github.com/OpenSMTPD/OpenSMTPD/pull/1195
Upstream-PR: https://github.com/OpenSMTPD/OpenSMTPD/pull/1198
Upstream-PR: https://github.com/OpenSMTPD/OpenSMTPD/pull/1199
Signed-off-by: orbea <orbea@riseup.net>
Closes: https://github.com/gentoo/gentoo/pull/30750
Signed-off-by: Sam James <sam@gentoo.org>

1 files changed, 91 insertions, 0 deletions

diff --git a/mail-mta/opensmtpd/opensmtpd-6.8.0_p2-r3.ebuild b/mail-mta/opensmtpd/opensmtpd-6.8.0_p2-r3.ebuild
new file mode 100644
index 000000000000..aeba246f0bdd
--- /dev/null
+++ b/mail-mta/opensmtpd/opensmtpd-6.8.0_p2-r3.ebuild
@@ -0,0 +1,91 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit autotools pam systemd
+
+DESCRIPTION="Lightweight but featured SMTP daemon from OpenBSD"
+HOMEPAGE="https://www.opensmtpd.org"
+SRC_URI="https://www.opensmtpd.org/archives/${P/_}.tar.gz"
+
+LICENSE="ISC BSD BSD-1 BSD-2 BSD-4"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc64 ~riscv ~x86"
+IUSE="berkdb +mta pam split-usr"
+
+# < openssl 3 for bug #881701
+DEPEND="
+	acct-user/smtpd
+	acct-user/smtpq
+	<dev-libs/openssl-3:=
+	elibc_musl? ( sys-libs/fts-standalone )
+	sys-libs/zlib
+	pam? ( sys-libs/pam )
+	berkdb? ( sys-libs/db:= )
+	dev-libs/libevent:=
+	app-misc/ca-certificates
+	net-mail/mailbase
+	net-libs/libasr
+	virtual/libcrypt:=
+	!mail-mta/courier
+	!mail-mta/esmtp
+	!mail-mta/exim
+	!mail-mta/mini-qmail
+	!mail-mta/msmtp[mta]
+	!mail-mta/netqmail
+	!mail-mta/nullmailer
+	!mail-mta/postfix
+	!mail-mta/qmail-ldap
+	!mail-mta/sendmail
+	!mail-mta/ssmtp[mta]
+"
+RDEPEND="${DEPEND}"
+BDEPEND="app-alternatives/yacc"
+
+S=${WORKDIR}/${P/_}
+
+PATCHES=(
+	"${FILESDIR}"/${P}-ar.patch #720782
+	"${FILESDIR}"/${P}-implicit-function-declaration.patch #727260, 896050, 899876
+	"${FILESDIR}"/${P}-strict-prototypes.patch
+)
+
+src_prepare() {
+	default
+	eautoreconf
+}
+
+src_configure() {
+	econf \
+		--sysconfdir=/etc/smtpd \
+		--with-path-mbox=/var/spool/mail \
+		--with-path-empty=/var/empty \
+		--with-path-socket=/run \
+		--with-path-CAfile=/etc/ssl/certs/ca-certificates.crt \
+		--with-user-smtpd=smtpd \
+		--with-user-queue=smtpq \
+		--with-group-queue=smtpq \
+		--with-libevent="$(get_libdir)" \
+		--with-libssl="$(get_libdir)" \
+		$(use_with pam auth-pam) \
+		$(use_with berkdb table-db)
+}
+
+src_install() {
+	default
+	newinitd "${FILESDIR}"/smtpd.initd smtpd
+	systemd_dounit "${FILESDIR}"/smtpd.{service,socket}
+	use pam && newpamd "${FILESDIR}"/smtpd.pam smtpd
+	dosym smtpctl /usr/sbin/makemap
+	dosym smtpctl /usr/sbin/newaliases
+	if use mta ; then
+		dodir /usr/sbin
+		dosym smtpctl /usr/sbin/sendmail
+		# on USE="-split-usr" system sbin and bin are merged
+		# so symlink made above will collide with one below
+		use split-usr && dosym ../sbin/smtpctl /usr/bin/sendmail
+		mkdir -p "${ED}"/usr/$(get_libdir) || die
+		ln -s --relative "${ED}"/usr/sbin/smtpctl "${ED}"/usr/$(get_libdir)/sendmail || die
+	fi
+}