[gdm] configure: Make selinux support explicitly optional

[Ray Strode <halfline src gnome org>]

commit ff396710227fb95abb2edd413af70ef59a321a72
Author: Alexandre Rostovtsev <tetromino gentoo org>
Date:   Tue Sep 25 17:38:37 2012 -0400

    configure: Make selinux support explicitly optional

 configure.ac |   11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index bda20c6..7c3ca61 100644
--- a/configure.ac
+++ b/configure.ac
@@ -116,10 +116,17 @@ PKG_CHECK_MODULES(CANBERRA_GTK,
 AC_SUBST(CANBERRA_GTK_CFLAGS)
 AC_SUBST(CANBERRA_GTK_LIBS)
 
+AC_ARG_WITH(selinux,
+            AS_HELP_STRING([--with-selinux],
+                           [Add SELinux support]),,
+            with_selinux=auto)
+
 PKG_CHECK_MODULES(LIBSELINUX, libselinux, have_selinux=yes, have_selinux=no)
 
-if test "x$have_selinux" = "xyes" ; then
+use_selinux=no
+if test "x$have_selinux" = "xyes" && test "x$with_selinux" != "xno" ; then
         AC_DEFINE(HAVE_SELINUX, 1, [Define if have selinux])
+        use_selinux=yes
 fi
 AC_SUBST(LIBSELINUX_CFLAGS)
 AC_SUBST(LIBSELINUX_LIBS)
@@ -1613,7 +1620,7 @@ fi
 echo \
 "        Xinerama support:         ${XINERAMA_SUPPORT}
         XDMCP support:            ${XDMCP_SUPPORT}
-        SELinux support:          ${have_selinux}
+        SELinux support:          ${use_selinux}
         ConsoleKit support:       ${use_console_kit}
         systemd support:          ${use_systemd}
         systemd unit dir:         ${with_systemdsystemunitdir}