Install systemd services with autotools

Change-Id: Ie4c7e81495181059d1dff1c194d52d11fb72ed03

Makefile.am

@@ -1,8 +1,11 @@
 AUTOMAKE_OPTIONS = foreign dist-bzip2 1.6
 
-SUBDIRS = include src examples tests
+SUBDIRS = include src examples tests contrib
 EXTRA_DIST = osmoappdesc.py README.md
 
+DISTCHECK_CONFIGURE_FLAGS = \
+	--with-systemdsystemunitdir=$$dc_install_base/$(systemdsystemunitdir)
+
 @RELMAKE@
 
 pkgconfigdir = $(libdir)/pkgconfig

configure.ac

@@ -157,6 +157,22 @@ AM_CONDITIONAL(ENABLE_VTY_TESTS, test "x$enable_vty_tests" = "xyes")
 STD_DEFINES_AND_INCLUDES="-Wall"
 AC_SUBST(STD_DEFINES_AND_INCLUDES)
 
+# 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"])
@@ -168,4 +184,6 @@ AC_OUTPUT(
     src/Makefile
     examples/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-pcu.service
+systemdsystemunit_DATA = \
+  osmo-pcu.service
+endif

debian/osmo-pcu.install

@@ -1,4 +1,5 @@
 etc/osmocom/osmo-pcu.cfg
+lib/systemd/system/osmo-pcu.service
 usr/bin/osmo-pcu
 usr/include/osmocom/pcu/pcuif_proto.h
 usr/lib/*/pkgconfig/osmo-pcu.pc

debian/osmo-pcu.service

@@ -1 +0,0 @@
-../contrib/osmo-pcu.service

debian/rules

@@ -22,3 +22,6 @@ override_dh_clean:
 # Print test results in case of a failure
 override_dh_auto_test:
 	dh_auto_test || (find . -name testsuite.log -exec cat {} \; ; false)
+
+override_dh_auto_configure:
+	dh_auto_configure -- --with-systemdsystemunitdir=/lib/systemd/system