sys-fs/mdadm: EAPI=8, return -fPIE

sys-fs/mdadm fails to compile.
Makefile has `CWFLAGS ?= -Wall -Werror` and ebuild overwrites that. Then ld
failes with:

    ld: mdadm.o: relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a PIE object; recompile with -fPIE

Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

sys-fs/mdadm/mdadm-4.3-r1.ebuild

@@ -0,0 +1,125 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit flag-o-matic systemd toolchain-funcs udev
+
+DESCRIPTION="Tool for running RAID systems - replacement for the raidtools"
+HOMEPAGE="https://git.kernel.org/pub/scm/utils/mdadm/mdadm.git/"
+DEB_PF="4.3-1"
+SRC_URI="https://www.kernel.org/pub/linux/utils/raid/mdadm/${P/_/-}.tar.xz
+		mirror://debian/pool/main/m/mdadm/${PN}_${DEB_PF}.debian.tar.xz"
+
+LICENSE="GPL-2"
+SLOT="0"
+[[ "${PV}" = *_rc* ]] || \
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~ppc ~ppc64 ~riscv ~sparc ~x86"
+IUSE="static systemd +udev corosync"
+
+REQUIRED_USE="static? ( !udev )"
+
+BDEPEND="virtual/pkgconfig"
+DEPEND="udev? ( virtual/libudev:= )
+	corosync? ( sys-cluster/corosync )"
+RDEPEND="${DEPEND}
+	>=sys-apps/util-linux-2.16"
+
+# The tests edit values in /proc and run tests on software raid devices.
+# Thus, they shouldn't be run on systems with active software RAID devices.
+RESTRICT="test"
+
+PATCHES=(
+	#"${FILESDIR}/${PN}"-3.4-sysmacros.patch #580188 # upstream has it later in the list of includes as of 4.3.
+	"${FILESDIR}/${PN}"-4.3-in_initrd-collision.patch #830461
+	"${FILESDIR}/${PN}"-4.2-mdadm_env.patch #628968
+	"${FILESDIR}/${PN}"-4.3-ldflags.patch
+	"${FILESDIR}/${PN}"-4.3-no-udev.patch
+	"${FILESDIR}/${PN}"-4.3-musl125-1.patch
+	"${WORKDIR}/debian/patches/debian/0001-fix-manpages.patch"
+	"${WORKDIR}/debian/patches/debian/0003-host-name-in-default-mailfrom.patch"
+	"${WORKDIR}/debian/patches/debian/0004-exit-gracefully-when-md-device-not-found.patch"
+	"${WORKDIR}/debian/patches/debian/0007-no-Werror.patch"
+)
+
+mdadm_emake() {
+	# We should probably make libdlm into USE flags. #573782
+	local args=(
+		PKG_CONFIG="$(tc-getPKG_CONFIG)"
+		CC="$(tc-getCC)"
+		CWFLAGS="-Wall -fPIE"
+		CXFLAGS="${CFLAGS}"
+		LDFLAGS="${LDFLAGS}"
+		UDEVDIR="$(get_udevdir)"
+		SYSTEMD_DIR="$(systemd_get_systemunitdir)"
+		COROSYNC="$(usex corosync '' -DNO_COROSYNC)"
+		DLM="-DNO_DLM"
+
+		# https://bugs.gentoo.org/732276
+		STRIP=
+
+		"$@"
+	)
+	emake "${args[@]}"
+}
+
+src_compile() {
+	use static && append-ldflags -static
+
+	# CPPFLAGS won't work for this
+	use udev || append-cflags -DNO_LIBUDEV
+
+	# bug 907082
+	use elibc_musl && append-cppflags -D_LARGEFILE64_SOURCE
+
+	mdadm_emake all
+}
+
+src_test() {
+	mdadm_emake test
+
+	sh ./test || die
+}
+
+src_install() {
+	mdadm_emake DESTDIR="${D}" install install-systemd
+	dodoc ChangeLog INSTALL TODO README* ANNOUNCE-*
+
+	# install mdcheck_start.service
+	# needed for systemd units https://bugs.gentoo.org/833000
+	exeinto /usr/share/mdadm/
+	doexe misc/mdcheck
+
+	insinto /etc
+	newins mdadm.conf-example mdadm.conf
+	newinitd "${FILESDIR}"/mdadm.rc mdadm
+	newconfd "${FILESDIR}"/mdadm.confd mdadm
+	newinitd "${FILESDIR}"/mdraid.rc mdraid
+	newconfd "${FILESDIR}"/mdraid.confd mdraid
+
+	# From the Debian patchset
+	into /usr
+	dodoc "${WORKDIR}"/debian/local/doc/README.checkarray
+	dosbin "${WORKDIR}"/debian/local/bin/checkarray
+	insinto /etc/default
+	newins "${FILESDIR}"/etc-default-mdadm mdadm
+
+	exeinto /etc/cron.weekly
+	newexe "${FILESDIR}"/mdadm.weekly mdadm
+}
+
+pkg_postinst() {
+	udev_reload
+	if ! systemd_is_booted; then
+		if [[ -z ${REPLACING_VERSIONS} ]] ; then
+			# Only inform people the first time they install.
+			elog "If you're not relying on kernel auto-detect of your RAID"
+			elog "devices, you need to add 'mdraid' to your 'boot' runlevel:"
+			elog "	rc-update add mdraid boot"
+		fi
+	fi
+}
+
+pkg_postrm() {
+	udev_reload
+}