Only activate systemd’s watchdog if we are compiling with systemd

ref #3152

CMakeLists.txt

@@ -242,7 +242,9 @@ configure_file(biboumi.h.cmake src/biboumi.h)
 
 if(SYSTEMD_FOUND)
   set(SYSTEMD_SERVICE_TYPE "notify")
+  set(WATCHDOG_SEC "20")
 else()
   set(SYSTEMD_SERVICE_TYPE "simple")
+  set(WATCHDOG_SEC "")
 endif()
 configure_file(unit/biboumi.service.cmake biboumi.service)

unit/biboumi.service.cmake

@@ -1,12 +1,13 @@
 [Unit]
 Description=Biboumi, XMPP to IRC gateway
+Documentation=man:biboumi(1) http://biboumi.louiz.org
 After=network.target
 
 [Service]
 Type=${SYSTEMD_SERVICE_TYPE}
 ExecStart=${CMAKE_INSTALL_PREFIX}/bin/biboumi /etc/biboumi/biboumi.cfg
 ExecReload=/bin/kill -s USR1 $MAINPID
-WatchdogSec=10
+WatchdogSec=${WATCHDOG_SEC}
 Restart=always
 User=nobody
 Group=nobody