[gdm] configure: check for selinux again

[Ray Strode <halfline src gnome org>]

commit fd4291d5e4e811a0e484a06d88509f4adfed6a90
Author: Ray Strode <rstrode redhat com>
Date:   Thu Sep 6 17:01:03 2012 -0400

    configure: check for selinux again
    
    This sort of reverts commit 378390b9b5639bbe37cf4ba06e2e4acf1587e1d8.

 configure.ac |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 5283845..af31719 100644
--- a/configure.ac
+++ b/configure.ac
@@ -142,6 +142,14 @@ AC_SUBST(UPOWER)
 AC_SUBST(UPOWER_CFLAGS)
 AC_SUBST(UPOWER_LIBS)
 
+PKG_CHECK_MODULES(LIBSELINUX, libselinux, have_selinux=yes, have_selinux=no)
+
+if test "x$have_selinux" = "xyes" ; then
+        AC_DEFINE(HAVE_SELINUX, 1, [Define if have selinux])
+fi
+AC_SUBST(LIBSELINUX_CFLAGS)
+AC_SUBST(LIBSELINUX_LIBS)
+
 PKG_CHECK_MODULES(SIMPLE_GREETER,
         gtk+-3.0 >= $GTK_REQUIRED_VERSION
 	fontconfig >= $FONTCONFIG_REQUIRED_VERSION
@@ -1595,6 +1603,7 @@ fi
 echo \
 "        Xinerama support:         ${XINERAMA_SUPPORT}
         XDMCP support:            ${XDMCP_SUPPORT}
+        SELinux support:          ${have_selinux}
         ConsoleKit support:       ${use_console_kit}
         systemd support:          ${use_systemd}
         systemd unit dir:         ${with_systemdsystemunitdir}