iprutils: Add option to enable/disable systemd files from configure script.

Allow users to disable systemd support in iprutils for distros that
don't support it.  One can run ../configure --without-systemd to avoid
building the service files.

The default behavior is to build systemd files (--with-systemd) and they
will be installed into %{prefix}/usr/lib/systemd/system/. But path can
be overriden using --with-systemd=<path>.

Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>

Makefile.am

@@ -43,7 +43,11 @@ dist_noinst_DATA = LICENSE
 bashcompdir = ${sysconfdir}/bash_completion.d
 dist_bashcomp_DATA = iprconfig-bash-completion.sh
 
-SUBDIRS = . systemd init.d spec
+SUBDIRS = . init.d spec
+
+if SYSTEMD
+SUBDIRS += systemd
+endif
 
 if SOSREPORT
 sosreportdir = @pythondir@/sos/plugins

configure.ac

@@ -55,6 +55,25 @@ AC_ARG_ENABLE([sosreport],
  esac], [sosreport=true])
 AM_CONDITIONAL([SOSREPORT], [test "x${sosreport}" = xtrue])
 
+# --with-systemd
+systemdunitdir='${exec_prefix}/usr/lib/systemd/system/'
+AC_ARG_WITH([systemd],
+	    [--without-systemd Disable systemd service files.],
+[case $withval in
+     yes)
+        systemd=true;
+	;;
+     no)
+	systemd=false;
+	;;
+     *)
+	systemd=true;
+	systemdunitdir="$withval"
+	;;
+ esac], [systemd=true])
+AM_CONDITIONAL([SYSTEMD], [test "x${systemd}" = xtrue])
+AC_SUBST(systemdunitdir, ${systemdunitdir})
+
 ## Check for python if building with sosreport.
 if test "x${SOSREPORT_TRUE}" = "x"; then
    AM_PATH_PYTHON([2.6])

systemd/Makefile.am

@@ -11,10 +11,12 @@
 %.service: %.service.in
 	sed -e 's,[@]sbindir[@],$(sbindir),g' < $< > $@
 
-nodist_pkgdata_DATA = iprdump.service \
+systemdunitdir = @systemdunitdir@
+
+nodist_systemdunit_DATA = iprdump.service \
 	iprinit.service iprupdate.service
-dist_pkgdata_DATA = iprdump.service.in \
+EXTRA_DIST = iprdump.service.in \
 	iprinit.service.in iprupdate.service.in
 
 clean-local:
-	rm iprdump.service iprinit.service iprupdate.service
+	-rm iprdump.service iprinit.service iprupdate.service