| 1 | #!/usr/bin/perl -w
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| 2 | require 5.003; # keep this compatible, an old perl is all we may have before
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| 3 | # we build the new one
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| 4 |
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| 5 | # The idea is to move the regen_headers target out of the Makefile so that
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| 6 | # it is possible to rebuild the headers before the Makefile is available.
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| 7 | # (and the Makefile is unavailable until after Configure is run, and we may
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| 8 | # wish to make a clean source tree but with current headers without running
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| 9 | # anything else.
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| 10 |
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| 11 | use strict;
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| 12 | my $perl = $^X;
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| 13 |
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| 14 | require 'regen_lib.pl';
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| 15 | # keep warnings.pl in sync with the CPAN distribution by not requiring core
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| 16 | # changes
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| 17 | safer_unlink ("warnings.h", "lib/warnings.pm");
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| 18 |
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| 19 | my %gen = (
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| 20 | 'autodoc.pl' => [qw[pod/perlapi.pod pod/perlintern.pod]],
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| 21 | 'bytecode.pl' => [qw[ext/ByteLoader/byterun.h
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| 22 | ext/ByteLoader/byterun.c
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| 23 | ext/B/B/Asmdata.pm]],
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| 24 | 'embed.pl' => [qw[proto.h embed.h embedvar.h global.sym
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| 25 | perlapi.h perlapi.c]],
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| 26 | 'keywords.pl' => [qw[keywords.h]],
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| 27 | 'opcode.pl' => [qw[opcode.h opnames.h pp_proto.h pp.sym]],
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| 28 | 'regcomp.pl' => [qw[regnodes.h]],
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| 29 | 'warnings.pl' => [qw[warnings.h lib/warnings.pm]],
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| 30 | 'reentr.pl' => [qw[reentr.c reentr.h]],
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| 31 | );
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| 32 |
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| 33 | sub do_cksum {
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| 34 | my $pl = shift;
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| 35 | my %cksum;
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| 36 | for my $f (@{ $gen{$pl} }) {
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| 37 | local *FH;
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| 38 | if (open(FH, $f)) {
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| 39 | local $/;
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| 40 | $cksum{$f} = unpack("%32C*", <FH>);
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| 41 | close FH;
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| 42 | } else {
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| 43 | warn "$0: $f: $!\n";
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| 44 | }
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| 45 | }
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| 46 | return %cksum;
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| 47 | }
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| 48 |
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| 49 | foreach my $pl (qw (keywords.pl opcode.pl embed.pl bytecode.pl
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| 50 | regcomp.pl warnings.pl autodoc.pl reentr.pl)) {
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| 51 | print "$^X $pl\n";
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| 52 | my %cksum0;
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| 53 | %cksum0 = do_cksum($pl) unless $pl eq 'warnings.pl'; # the files were removed
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| 54 | system "$^X $pl";
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| 55 | next if $pl eq 'warnings.pl'; # the files were removed
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| 56 | my %cksum1 = do_cksum($pl);
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| 57 | my @chg;
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| 58 | for my $f (@{ $gen{$pl} }) {
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| 59 | push(@chg, $f)
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| 60 | if !defined($cksum0{$f}) ||
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| 61 | !defined($cksum1{$f}) ||
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| 62 | $cksum0{$f} ne $cksum1{$f};
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| 63 | }
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| 64 | print "Changed: @chg\n" if @chg;
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| 65 | }
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