From: Nicola Lunghi <nicola.lunghi@jci.com>

if resolved option is not selected the package systemd-resolved
is not installed so it cannot provide an alternative for
resolv.conf

In this recipe the previous check was instead reversing the check (note the !).

This patch avoid messing with resol.conf link if resolved is disabled in
the package config.

This in particular if we compile systemd with musl where systemd-resolved
cannot be compiled.

Signed-off-by: Nicola Lunghi <nicola.lunghi@jci.com>
---
 meta/recipes-core/systemd/systemd_237.bb | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/meta/recipes-core/systemd/systemd_237.bb b/meta/recipes-core/systemd/systemd_237.bb
index 3efca33e73..bd6dcef637 100644
--- a/meta/recipes-core/systemd/systemd_237.bb
+++ b/meta/recipes-core/systemd/systemd_237.bb
@@ -258,14 +258,11 @@ do_install() {
 	if [ -s ${D}${exec_prefix}/lib/tmpfiles.d/systemd.conf ]; then
 		${@bb.utils.contains('PACKAGECONFIG', 'networkd', ':', 'sed -i -e "\$ad /run/systemd/netif/links 0755 root root -" ${D}${exec_prefix}/lib/tmpfiles.d/systemd.conf', d)}
 	fi
-	if ! ${@bb.utils.contains('PACKAGECONFIG', 'resolved', 'true', 'false', d)}; then
+	if ${@bb.utils.contains('PACKAGECONFIG', 'resolved', 'true', 'false', d)}; then
 		echo 'L! ${sysconfdir}/resolv.conf - - - - ../run/systemd/resolve/resolv.conf' >>${D}${exec_prefix}/lib/tmpfiles.d/etc.conf
 		echo 'd /run/systemd/resolve 0755 root root -' >>${D}${exec_prefix}/lib/tmpfiles.d/systemd.conf
 		echo 'f /run/systemd/resolve/resolv.conf 0644 root root' >>${D}${exec_prefix}/lib/tmpfiles.d/systemd.conf
 		ln -s ../run/systemd/resolve/resolv.conf ${D}${sysconfdir}/resolv-conf.systemd
-	else
-		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
 
@@ -539,7 +536,7 @@ python __anonymous() {
 # TODO:
 # u-a for runlevel and telinit
 
-ALTERNATIVE_${PN} = "init halt reboot shutdown poweroff runlevel resolv-conf"
+ALTERNATIVE_${PN} = "init halt reboot shutdown poweroff runlevel"
 
 ALTERNATIVE_TARGET[init] = "${rootlibexecdir}/systemd/systemd"
 ALTERNATIVE_LINK_NAME[init] = "${base_sbindir}/init"
@@ -565,6 +562,7 @@ ALTERNATIVE_TARGET[runlevel] = "${base_bindir}/systemctl"
 ALTERNATIVE_LINK_NAME[runlevel] = "${base_sbindir}/runlevel"
 ALTERNATIVE_PRIORITY[runlevel] ?= "300"
 
+ALTERNATIVE_${PN} += "${@bb.utils.contains('PACKAGECONFIG', 'resolved', 'resolv-conf', '', d)}"
 ALTERNATIVE_TARGET[resolv-conf] = "${sysconfdir}/resolv-conf.systemd"
 ALTERNATIVE_LINK_NAME[resolv-conf] = "${sysconfdir}/resolv.conf"
 ALTERNATIVE_PRIORITY[resolv-conf] ?= "50"
