Install systemd service file if systemd is available

Makefile.am

@@ -803,6 +803,15 @@ FILTER_SRC = \
 
 
 #
+# systemd unit
+#
+
+if HAVE_SYSTEMD
+systemdsystemunit_DATA = \
+	mpd.service
+endif
+
+#
 # Sparse code analysis
 #
 # sparse is a semantic parser

NEWS

@@ -11,6 +11,7 @@ ver 0.16.5 (2010/??/??)
   - ffmpeg: don't require key frame for seeking
   - fix CUE track seeking
 * WIN32: close sockets properly
+* install systemd service file if systemd is available
 
 
 ver 0.16.4 (2011/09/01)

configure.ac

@@ -33,6 +33,13 @@ fi
 AC_PROG_INSTALL
 AC_PROG_MAKE_SET
 PKG_PROG_PKG_CONFIG
+AC_ARG_WITH([systemdsystemunitdir],
+	    AS_HELP_STRING([--with-systemdsystemunitdir=DIR], [Directory for systemd service files]),
+	    [], [with_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)])
+if test "x$with_systemdsystemunitdir" != xno; then
+	AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])
+fi
+AM_CONDITIONAL(HAVE_SYSTEMD, [test -n "$with_systemdsystemunitdir" -a "x$with_systemdsystemunitdir" != xno ])
 
 dnl ---------------------------------------------------------------------------
 dnl Declare Variables
@@ -1592,5 +1599,6 @@ dnl ---------------------------------------------------------------------------
 dnl Generate files
 dnl ---------------------------------------------------------------------------
 AC_OUTPUT(Makefile)
+AC_OUTPUT(mpd.service)
 
 echo 'MPD is ready for compilation, type "make" to begin.'

mpd.service.in

+[Unit]
+Description=Music Player Daemon
+After=sound.target
+
+[Service]
+ExecStart=@prefix@/bin/mpd --no-daemon
+
+[Install]
+WantedBy=multi-user.target