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package Config::Extensions;
use strict;
use vars qw(%Extensions $VERSION @ISA @EXPORT_OK);
use Config;
require Exporter;
$VERSION = '0.01';
@ISA = 'Exporter';
@EXPORT_OK = '%Extensions';
foreach my $type (qw(static dynamic nonxs)) {
foreach (split /\s+/, $Config{$type . '_ext'}) {
s!/!::!g;
$Extensions{$_} = $type;
}
}
1;
__END__
=head1 NAME
Config::Extensions - hash lookup of which core extensions were built.
=head1 SYNOPSIS
use Config::Extensions '%Extensions';
if ($Extensions{PerlIO::via}) {
# This perl has PerlIO::via built
}
=head1 DESCRIPTION
The Config::Extensions module provides a hash C<%Extensions> containing all
the core extensions that were enabled for this perl. The hash is keyed by
extension name, with each entry having one of 3 possible values:
=over 4
=item dynamic
The extension is dynamically linked
=item nonxs
The extension is pure perl, so doesn't need linking to the perl executable
=item static
The extension is statically linked to the perl binary
=back
As all values evaluate to true, a simple C<if> test is good enough to determine
whether an extension is present.
All the data uses to generate the C<%Extensions> hash is already present in
the C<Config> module, but not in such a convenient format to quickly reference.
=head1 AUTHOR
Nicholas Clark <nick@ccl4.org>
=cut