systemd: Add PACKAGECONFIG for sysvinit

Add sysvinit PACKAGECONFIG which disables all sysvinit handling in
systemd if it isn't present.

Consolidate sysvinit handling so that when it's disabled we exclude all
sysvinit features.

(From OE-Core rev: 39ece7b)

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/systemd/systemd_244.3.bb

@@ -82,6 +82,7 @@ PACKAGECONFIG ??= " \
     set-time-epoch \
     smack \
     sysusers \
+    sysvinit \
     timedated \
     timesyncd \
     utmp \
@@ -165,6 +166,7 @@ PACKAGECONFIG[seccomp] = "-Dseccomp=true,-Dseccomp=false,libseccomp"
 PACKAGECONFIG[selinux] = "-Dselinux=true,-Dselinux=false,libselinux,initscripts-sushell"
 PACKAGECONFIG[smack] = "-Dsmack=true,-Dsmack=false"
 PACKAGECONFIG[sysusers] = "-Dsysusers=true,-Dsysusers=false"
+PACKAGECONFIG[sysvinit] = "-Dsysvinit-path=${sysconfdir}/init.d -Dsysvrcnd-path=${sysconfdir},-Dsysvinit-path= -Dsysvrcnd-path=,,update-rc.d"
 # When enabled use reproducble build timestamp if set as time epoch,
 # or build time if not. When disabled, time epoch is unset.
 def build_epoch(d):
@@ -198,7 +200,6 @@ EXTRA_OEMESON += "-Dnobody-user=nobody \
                   -Dnobody-group=nobody \
                   -Drootlibdir=${rootlibdir} \
                   -Drootprefix=${rootprefix} \
-                  -Dsysvrcnd-path=${sysconfdir} \
                   -Ddefault-locale=C \
                   "
 
@@ -234,6 +235,7 @@ do_install() {
 		install -d ${D}${sysconfdir}/init.d
 		install -m 0755 ${WORKDIR}/init ${D}${sysconfdir}/init.d/systemd-udevd
 		sed -i s%@UDEVD@%${rootlibexecdir}/systemd/systemd-udevd% ${D}${sysconfdir}/init.d/systemd-udevd
+		install -Dm 0755 ${S}/src/systemctl/systemd-sysv-install.SKELETON ${D}${systemd_unitdir}/systemd-sysv-install
 	fi
 
 	chown root:systemd-journal ${D}/${localstatedir}/log/journal
@@ -273,7 +275,6 @@ do_install() {
 		sed -i -e "s%^L! /etc/resolv.conf.*$%L! /etc/resolv.conf - - - - ../run/systemd/resolve/resolv.conf%g" ${D}${exec_prefix}/lib/tmpfiles.d/etc.conf
 		ln -s ../run/systemd/resolve/resolv.conf ${D}${sysconfdir}/resolv-conf.systemd
 	fi
-	install -Dm 0755 ${S}/src/systemctl/systemd-sysv-install.SKELETON ${D}${systemd_unitdir}/systemd-sysv-install
 
 	# If polkit is setup fixup permissions and ownership
 	if ${@bb.utils.contains('PACKAGECONFIG', 'polkit', 'true', 'false', d)}; then
@@ -564,7 +565,7 @@ FILES_${PN}-dev += "${base_libdir}/security/*.la ${datadir}/dbus-1/interfaces/ $
 
 RDEPENDS_${PN} += "kmod dbus util-linux-mount util-linux-umount udev (= ${EXTENDPKGV}) util-linux-agetty util-linux-fsck"
 RDEPENDS_${PN} += "${@bb.utils.contains('PACKAGECONFIG', 'serial-getty-generator', '', 'systemd-serialgetty', d)}"
-RDEPENDS_${PN} += "volatile-binds update-rc.d"
+RDEPENDS_${PN} += "volatile-binds"
 
 RRECOMMENDS_${PN} += "systemd-extra-utils \
                       systemd-compat-units udev-hwdb \