+=cut
+
+use base qw/Exporter/;
+
+our @EXPORT = ();
+our %EXPORT_TAGS = (
+ 'funcs' => [ qw/sysinfo/ ],
+ 'consts' => [ qw/LS_HAS_EXTENDED/ ]
+);
+our @EXPORT_OK = map { @$_ } values %EXPORT_TAGS;
+$EXPORT_TAGS{'all'} = [ @EXPORT_OK ];
+
+=head1 BINARY COMPATIBILITY
+
+If you upgrade your kernel to a greater version than 2.3.23 on i386 or 2.3.48 on any other platform, you will need to rebuild the module to access the extended fields.
+
+Moreover, since the perl hash function has changed after the 5.6 version, you will also need to recompile the module if you upgrade your perl from a version earlier than 5.6.