From 2b5c1b0742cd109c0702b3051d12829b39e5af49 Mon Sep 17 00:00:00 2001
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
Date: Fri, 22 Sep 2017 09:57:35 +0200
Subject: autotools: Make systemd dependency optional. This makes
 libayatana-indicator available on Debian GNU/kFreeBSD and Debian GNU/Hurd.

---
 configure.ac     | 16 +++++++++++++---
 data/Makefile.am |  2 ++
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 7c1f13d..f47d852 100644
--- a/configure.ac
+++ b/configure.ac
@@ -71,9 +71,6 @@ AM_CONDITIONAL(USE_GTK3, [test "x$with_gtk" = x3])
 LT_LIB_M
 AC_SUBST(LIBM)
 
-SYSTEMD_USERDIR=`$PKG_CONFIG --variable=systemduserunitdir systemd`
-AC_SUBST(SYSTEMD_USERDIR)
-
 ##############################
 # Custom Junk
 ##############################
@@ -116,6 +113,19 @@ AC_DEFINE_PATH(PREFIX, "${prefix}", [prefix directory])
 AC_DEFINE_PATH(SYSCONFDIR, "${sysconfdir}", [system configuration dir])
 AC_DEFINE_PATH(LIBDIR, "${libdir}", [system configuration dir])
 
+#########################
+# Check for systemd
+#########################
+PKG_CHECK_MODULES(SYSTEMD,  systemd,
+    [has_systemd=yes],
+    []
+)
+if test "x$has_systemd" = "xyes"; then
+	SYSTEMD_USERDIR=`$PKG_CONFIG --variable=systemduserunitdir systemd`
+	AC_SUBST(SYSTEMD_USERDIR)
+	AC_DEFINE(HAVE_SYSTEMD, 1, [create ayatana-indicators-pre.target for systemd])
+fi
+
 #########################
 # Check if build tests
 #########################
diff --git a/data/Makefile.am b/data/Makefile.am
index 5a0f26e..55ae3ab 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -1,3 +1,5 @@
+#if defined(HAVE_SYSTEMD)
 systemd_DATA = ayatana-indicators-pre.target
 systemddir = $(SYSTEMD_USERDIR)
 EXTRA_DIST = $(systemd_DATA)
+#endif
-- 
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