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#!/usr/bin/perl -w
require 5.003; # keep this compatible, an old perl is all we may have before
# we build the new one
# The idea is to move the regen_headers target out of the Makefile so that
# it is possible to rebuild the headers before the Makefile is available.
# (and the Makefile is unavailable until after Configure is run, and we may
# wish to make a clean source tree but with current headers without running
# anything else.
use strict;
my $perl = $^X;
require 'regen_lib.pl';
# keep warnings.pl in sync with the CPAN distribution by not requiring core
# changes
safer_unlink ("warnings.h", "lib/warnings.pm");
my %gen = (
'autodoc.pl' => [qw[pod/perlapi.pod pod/perlintern.pod]],
'bytecode.pl' => [qw[ext/ByteLoader/byterun.h
ext/ByteLoader/byterun.c
ext/B/B/Asmdata.pm]],
'embed.pl' => [qw[proto.h embed.h embedvar.h global.sym
perlapi.h perlapi.c]],
'keywords.pl' => [qw[keywords.h]],
'opcode.pl' => [qw[opcode.h opnames.h pp_proto.h pp.sym]],
'regcomp.pl' => [qw[regnodes.h]],
'warnings.pl' => [qw[warnings.h lib/warnings.pm]]
);
sub do_cksum {
my $pl = shift;
my %cksum;
for my $f (@{ $gen{$pl} }) {
local *FH;
if (open(FH, $f)) {
local $/;
$cksum{$f} = unpack("%32C*", <FH>);
close FH;
} else {
warn "$0: $f: $!\n";
}
}
return %cksum;
}
foreach my $pl (qw (keywords.pl opcode.pl embed.pl bytecode.pl
regcomp.pl warnings.pl autodoc.pl)) {
print "$^X $pl\n";
my %cksum0;
%cksum0 = do_cksum($pl) unless $pl eq 'warnings.pl'; # the files were removed
system "$^X $pl";
next if $pl eq 'warnings.pl'; # the files were removed
my %cksum1 = do_cksum($pl);
my @chg;
for my $f (@{ $gen{$pl} }) {
push(@chg, $f)
if !defined($cksum0{$f}) ||
!defined($cksum1{$f}) ||
$cksum0{$f} ne $cksum1{$f};
}
print "Changed: @chg\n" if @chg;
}
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