Install systemd services with autotools

Change-Id: I672f49f1034554ce62347ff9493eca18340deb3a

Makefile.am

@@ -1,10 +1,13 @@
 AUTOMAKE_OPTIONS = foreign dist-bzip2 1.6
 
-SUBDIRS = src tests
+SUBDIRS = src tests contrib
 
 BUILT_SOURCES = $(top_srcdir)/.version
 EXTRA_DIST = git-version-gen osmoappdesc.py .version
 
+DISTCHECK_CONFIGURE_FLAGS = \
+	--with-systemdsystemunitdir=$$dc_install_base/$(systemdsystemunitdir)
+
 @RELMAKE@
 
 $(top_srcdir)/.version:

configure.ac

@@ -65,6 +65,22 @@ AC_MSG_CHECKING([whether to enable VTY/CTRL tests])
 AC_MSG_RESULT([$enable_ext_tests])
 AM_CONDITIONAL(ENABLE_EXT_TESTS, test "x$enable_ext_tests" = "xyes")
 
+# https://www.freedesktop.org/software/systemd/man/daemon.html
+AC_ARG_WITH([systemdsystemunitdir],
+     [AS_HELP_STRING([--with-systemdsystemunitdir=DIR], [Directory for systemd service files])],,
+     [with_systemdsystemunitdir=auto])
+AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"], [
+     def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
+
+     AS_IF([test "x$def_systemdsystemunitdir" = "x"],
+   [AS_IF([test "x$with_systemdsystemunitdir" = "xyes"],
+    [AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
+    with_systemdsystemunitdir=no],
+   [with_systemdsystemunitdir="$def_systemdsystemunitdir"])])
+AS_IF([test "x$with_systemdsystemunitdir" != "xno"],
+      [AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])])
+AM_CONDITIONAL([HAVE_SYSTEMD], [test "x$with_systemdsystemunitdir" != "xno"])
+
 AC_MSG_RESULT([CPPFLAGS="$CPPFLAGS"])
 AC_MSG_RESULT([CFLAGS="$CFLAGS"])
 AC_MSG_RESULT([CXXFLAGS="$CXXFLAGS"])
@@ -73,4 +89,6 @@ AC_MSG_RESULT([LDFLAGS="$LDFLAGS"])
 AC_OUTPUT(
 	src/Makefile
 	tests/Makefile
+	contrib/Makefile
+	contrib/systemd/Makefile
 	Makefile)

contrib/Makefile.am

@@ -0,0 +1 @@
+SUBDIRS = systemd

contrib/systemd/Makefile.am

@@ -0,0 +1,5 @@
+if HAVE_SYSTEMD
+EXTRA_DIST = osmo-sip-connector.service
+systemdsystemunit_DATA = \
+  osmo-sip-connector.service
+endif

debian/osmo-sip-connector.install

@@ -1 +1,2 @@
+lib/systemd/system/osmo-sip-connector.service
 usr/bin/osmo-sip-connector

debian/osmo-sip-connector.service

@@ -1 +0,0 @@
-../contrib/systemd/osmo-sip-connector.service

debian/rules

@@ -13,3 +13,6 @@ export DEB_BUILD_HARDENING=1
 
 override_dh_strip:
 	dh_strip --dbg-package=osmo-sip-connector-dbg
+
+override_dh_auto_configure:
+	dh_auto_configure -- --with-systemdsystemunitdir=/lib/systemd/system