Install systemd services with autotools

This commit re-adds ba3da6d72564bb2c60f4f4a8d641b8a7b86d1f59, plus fixes
two typos (sytemd->systemd) in that commit.

The commit is fine, we just need to add some extra configure flags in
osmo-ci.git.

Depends: https://gerrit.osmocom.org/#/c/osmo-ci/+/10857/
Change-Id: Ifc11d97c0c5fe1f7872b59147b1548b56951921b

7 files changed, 29 insertions, 3 deletions

diff --git a/Makefile.am b/Makefile.am
index 3f4de13..7d09259 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,13 +1,16 @@
 AUTOMAKE_OPTIONS = foreign dist-bzip2 1.6
 
 AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include
-SUBDIRS = include src tests examples stp doc
+SUBDIRS = include src tests examples stp doc contrib
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libosmo-sccp.pc libosmo-mtp.pc libosmo-sigtran.pc libosmo-xua.pc
 
 EXTRA_DIST = .version git-version-gen osmoappdesc.py doc/examples/osmo-stp.cfg
 
+DISTCHECK_CONFIGURE_FLAGS = \
+  --with-systemdsystemunitdir=$$dc_install_base/$(systemdsystemunitdir)
+
 @RELMAKE@
 
 BUILT_SOURCES = $(top_srcdir)/.version
diff --git a/configure.ac b/configure.ac
index c0cc488..af64bc0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -98,6 +98,21 @@ AC_ARG_ENABLE(doxygen,
 AC_PATH_PROG(DOXYGEN,doxygen,false)
 AM_CONDITIONAL(HAVE_DOXYGEN, test $DOXYGEN != false && test "x$doxygen" = "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([CFLAGS="$CFLAGS"])
 AC_MSG_RESULT([CPPFLAGS="$CPPFLAGS"])
 
@@ -122,5 +137,7 @@ AC_OUTPUT(
     stp/Makefile
     doc/Makefile
     doc/examples/Makefile
+    contrib/Makefile
+    contrib/systemd/Makefile
     Doxyfile
     Makefile)
diff --git a/contrib/Makefile.am b/contrib/Makefile.am
new file mode 100644
index 0000000..3439c97
--- /dev/null
+++ b/contrib/Makefile.am
@@ -0,0 +1 @@
+SUBDIRS = systemd
diff --git a/contrib/systemd/Makefile.am b/contrib/systemd/Makefile.am
new file mode 100644
index 0000000..e7d846f
--- /dev/null
+++ b/contrib/systemd/Makefile.am
@@ -0,0 +1,5 @@
+if HAVE_SYSTEMD
+EXTRA_DIST = osmo-stp.service
+systemdsystemunit_DATA = \
+  osmo-stp.service
+endif
diff --git a/debian/osmo-stp.install b/debian/osmo-stp.install
index b2f8077..839735c 100644
--- a/debian/osmo-stp.install
+++ b/debian/osmo-stp.install
@@ -1,2 +1,3 @@
+/lib/systemd/system/osmo-stp.service
 /usr/bin/osmo-stp
 /usr/share/doc/libosmo-sccp/examples/osmo-stp/osmo-stp.cfg
diff --git a/debian/osmo-stp.service b/debian/osmo-stp.service
deleted file mode 120000
index 55f37c2..0000000
--- a/debian/osmo-stp.service
+++ /dev/null
@@ -1 +0,0 @@
-../contrib/systemd/osmo-stp.service
\ No newline at end of file
diff --git a/debian/rules b/debian/rules
index bea0a76..ec5c21c 100755
--- a/debian/rules
+++ b/debian/rules
@@ -24,7 +24,7 @@ override_dh_auto_test:
 	dh_auto_test || (find . -name testsuite.log -exec cat {} \; ; false)
 
 override_dh_auto_configure:
-	dh_auto_configure -- --enable-static
+	dh_auto_configure -- --enable-static --with-systemdsystemunitdir=/lib/systemd/system
 
 # Print test results in case of a failure
 override_dh_auto_test: