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wget/build-aux/build_info.pl
2009-09-04 10:16:49 -07:00

108 lines
2.3 KiB
Perl
Executable File

#!/usr/bin/perl
# Generate build_info.c.
# Copyright (C) 2009 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
use strict;
use warnings;
use FindBin qw($Bin);
use File::Spec ();
my $file = shift @ARGV;
{
my $data = parse_config();
output_code($data);
}
sub parse_config
{
my (%block, @defines, %feature);
open(my $fh, '<', $file) or die "Cannot open $file: $!";
my $cfg = do { local $/; <$fh> };
close($fh);
while ($cfg =~ /^\ *? (\w+) (?:\s+?)? (\w+?)? \s*$/gmx) {
$feature{$1} = $2 || '_MISSING';
push @defines, $1;
}
while ($cfg =~ /^(\ *? \#\w+? \s+? (\w+) .+ \#\w+)/gmsx) {
$block{$2} = $1;
}
my %data = (
block => \%block,
defines => \@defines,
feature => \%feature,
);
return \%data;
}
sub output_code
{
my ($block, $defines, $feature) =
map $_[0]->{$_}, qw(block defines feature);
print do { local $/; <DATA> }, "\n";
print <<EOC;
const char* (compiled_features[]) =
{
EOC
my @output;
foreach my $define (@$defines) {
if (!exists $block->{$define}) {
push @output, <<EOC;
#ifdef $define
"+$feature->{$define}",
#else
"-$feature->{$define}",
#endif
EOC
}
else {
push @output, <<EOC;
$block->{$define}
EOC
}
}
print join "\n", @output;
print <<EOC;
/* sentinel value */
NULL
};
EOC
}
__DATA__
/* Autogenerated by build_info.pl - DO NOT EDIT */
/* This stores global variables that are initialized with
preprocessor declarations for output with the --version flag.
Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. */
#include "wget.h"
#include <stdio.h>