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Regenerate reentr.[ch]
[perl5.git] / regen.pl
CommitLineData
36bb303b 1#!/usr/bin/perl -w
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2require 5.003; # keep this compatible, an old perl is all we may have before
3 # we build the new one
36bb303b 4
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5# The idea is to move the regen_headers target out of the Makefile so that
6# it is possible to rebuild the headers before the Makefile is available.
7# (and the Makefile is unavailable until after Configure is run, and we may
8# wish to make a clean source tree but with current headers without running
9# anything else.
36bb303b 10
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11use strict;
12my $perl = $^X;
36bb303b 13
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14require 'regen_lib.pl';
15# keep warnings.pl in sync with the CPAN distribution by not requiring core
16# changes
17safer_unlink ("warnings.h", "lib/warnings.pm");
36bb303b 18
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19my %gen = (
20 'autodoc.pl' => [qw[pod/perlapi.pod pod/perlintern.pod]],
21 'bytecode.pl' => [qw[ext/ByteLoader/byterun.h
22 ext/ByteLoader/byterun.c
23 ext/B/B/Asmdata.pm]],
24 'embed.pl' => [qw[proto.h embed.h embedvar.h global.sym
25 perlapi.h perlapi.c]],
26 'keywords.pl' => [qw[keywords.h]],
27 'opcode.pl' => [qw[opcode.h opnames.h pp_proto.h pp.sym]],
28 'regcomp.pl' => [qw[regnodes.h]],
29 'warnings.pl' => [qw[warnings.h lib/warnings.pm]]
30 );
36bb303b 31
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32sub do_cksum {
33 my $pl = shift;
34 my %cksum;
35 for my $f (@{ $gen{$pl} }) {
36 local *FH;
37 if (open(FH, $f)) {
38 local $/;
39 $cksum{$f} = unpack("%32C*", <FH>);
40 close FH;
41 } else {
42 warn "$0: $f: $!\n";
43 }
44 }
45 return %cksum;
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46}
47
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48foreach my $pl (qw (keywords.pl opcode.pl embed.pl bytecode.pl
49 regcomp.pl warnings.pl autodoc.pl)) {
50 print "$^X $pl\n";
51 my %cksum0;
52 %cksum0 = do_cksum($pl) unless $pl eq 'warnings.pl'; # the files were removed
53 system "$^X $pl";
54 next if $pl eq 'warnings.pl'; # the files were removed
55 my %cksum1 = do_cksum($pl);
56 my @chg;
57 for my $f (@{ $gen{$pl} }) {
58 push(@chg, $f)
59 if !defined($cksum0{$f}) ||
60 !defined($cksum1{$f}) ||
61 $cksum0{$f} ne $cksum1{$f};
62 }
63 print "Changed: @chg\n" if @chg;
36bb303b 64}