[gdm] configure: don't enable systemd journal if systemd is disabled

[Thomas Bechtold <toabctl src gnome org>]

commit 3b6ab28ec5a754f1042d06a0851916fb8407725a
Author: Thomas Bechtold <thomasbechtold jpberlin de>
Date:   Fri Feb 8 16:50:33 2013 +0100

    configure: don't enable systemd journal if systemd is disabled
    
    it's possible to fail the have_systemd check because systemd is too old,
    but still pass the have_journald check because journald is available.
    This commit ensures that doesn't happen because journald support depends
    on systemd support.

 configure.ac |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 5f5f5be..00f1cce 100644
--- a/configure.ac
+++ b/configure.ac
@@ -954,11 +954,16 @@ PKG_CHECK_MODULES(JOURNALD,
                   [have_journald=yes], [have_journald=no])
 
 if test "x$enable_systemd_journal" = "xauto" ; then
-        if test x$have_journald = xno ; then
-                use_journald=no
+        if test x$use_systemd = xyes ; then
+                if test x$have_journald = xno ; then
+                        use_journald=no
+                else
+                        use_journald=yes
+                fi
         else
-                use_journald=yes
+                use_journald=no
         fi
+
 else
         use_journald="$enable_systemd_journal"
 fi