require 5.003;
+my @extvars = qw(sv_undef sv_yes sv_no na dowarn
+ curcop compiling
+ tainting tainted stack_base stack_sp sv_arenaroot
+ curstash DBsub DBsingle debstash
+ rsfp
+ stdingv
+ defgv
+ errgv
+ rsfp_filters
+ perldb
+ );
+
sub readsyms (\%$) {
my ($syms, $file) = @_;
%$syms = ();
END
+print EM <<'END';
+
+#ifndef MIN_PERL_DEFINE
+
+END
+
+for $sym (sort @extvars) {
+ print EM hide($sym,"PL_$sym");
+}
+
+print EM <<'END';
+
+#endif /* MIN_PERL_DEFINE */
+END
+
+
close(EM);