+LB_HAVE_EXT4_ENABLED
+
+if test x$enable_ext4 = xyes ; then
+ AC_DEFINE(HAVE_EXT4_LDISKFS, 1, [ldiskfs based on ext4])
+ BACKFS=ext4
+else
+ BACKFS=ext3
+fi
+
+AC_SUBST(BACKFS)
+BACKFSU=${BACKFS/ext/EXT}
+AC_SUBST(BACKFSU) # We need a Upper string
+
+AM_CONDITIONAL(USE_EXT4, test x$enable_ext4 = xyes)
+