package/mosquitto: extend systemd integration

Since version 1.5, mosquitto can be built with explicit support for
systemd. If enabled, libmosquitto will link against libsystemd: when
started, the mosquitto broker notifies systemd that it is ready (ie.
initialized and ready to accept connections), so that services that
depend on the mqtt broker can be started only at that point.

To enable this feature, the systemd service config file needs to change
to Type=notify. Upstream now provides such a file, so we can remove
ours.

Signed-off-by: Titouan Christophe <titouan.christophe@railnova.eu>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/mosquitto/mosquitto.mk

@@ -29,6 +29,11 @@ else
 MOSQUITTO_MAKE_OPTS += WITH_SHARED_LIBRARIES=yes
 endif
 
+ifeq ($(BR2_PACKAGE_SYSTEMD),y)
+MOSQUITTO_MAKE_OPTS += WITH_SYSTEMD=yes
+MOSQUITTO_DEPENDENCIES += systemd
+endif
+
 # adns uses getaddrinfo_a
 ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),y)
 MOSQUITTO_MAKE_OPTS += WITH_ADNS=yes
@@ -102,7 +107,7 @@ define MOSQUITTO_INSTALL_INIT_SYSV
 endef
 
 define MOSQUITTO_INSTALL_INIT_SYSTEMD
-	$(INSTALL) -D -m 644 package/mosquitto/mosquitto.service \
+	$(INSTALL) -D -m 644 $(@D)/service/systemd/mosquitto.service.notify \
 		$(TARGET_DIR)/usr/lib/systemd/system/mosquitto.service
 	mkdir -p $(TARGET_DIR)/etc/systemd/system/multi-user.target.wants
 	ln -fs ../../../../usr/lib/systemd/system/mosquitto.service \

package/mosquitto/mosquitto.service

@@ -1,10 +0,0 @@
-[Unit]
-Description=Mosquitto MQTT broker
-
-[Service]
-ExecStart=/usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf
-ExecReload=/bin/kill -HUP $MAINPID
-Restart=always
-
-[Install]
-WantedBy=multi-user.target