+eval {
+ require Config;
+};
+die "OS unsupported" if $@;
+
+my @DEFINES;
+
+my $pl = $Config::Config{perl_patchlevel};
+print "Checking perl patchlevel... ";
+if (defined $pl && length $pl) {
+ $pl = int $pl;
+ push @DEFINES, DEFINE => '-DVMG_PERL_PATCHLEVEL=' . $pl;
+ print $pl, "\n";
+} else {
+ print "none\n";
+}
+