| 1 | #!/usr/bin/perl -w |
| 2 | require 5.003; # keep this compatible, an old perl is all we may have before |
| 3 | # we build the new one |
| 4 | |
| 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. |
| 10 | |
| 11 | use strict; |
| 12 | my $perl = $^X; |
| 13 | |
| 14 | require 'regen_lib.pl'; |
| 15 | # keep warnings.pl in sync with the CPAN distribution by not requiring core |
| 16 | # changes |
| 17 | safer_unlink ("warnings.h", "lib/warnings.pm"); |
| 18 | |
| 19 | my %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 | ); |
| 31 | |
| 32 | sub 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; |
| 46 | } |
| 47 | |
| 48 | foreach 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; |
| 64 | } |