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|
package FindExt;
our $VERSION = '1.02';
use strict;
use warnings;
my $no = join('|',qw(GDBM_File ODBM_File NDBM_File DB_File
VMS VMS-DCLsym VMS-Stdio Sys-Syslog IPC-SysV I18N-Langinfo));
$no = qr/^(?:$no)$/i;
sub apply_config {
my ($config) = @_;
my @no;
# duplicates logic from Configure (mostly)
push @no, "DB_File" unless $config->{i_db};
push @no, "GDBM_File" unless $config->{i_gdbm};
push @no, "I18N-Langinfo" unless $config->{i_langinfo} && $config->{i_nl_langinfo};
push @no, "IPC-SysV" unless $config->{d_msg} || $config->{d_sem} || $config->{d_shm};
push @no, "NDBM_File" unless $config->{d_ndbm};
push @no, "ODBM_File"
unless ($config->{i_dbm} || $config->{i_rpcsvcdbm}) && !$config->{d_cplusplus};
push @no, "VMS.*" unless $^O eq "VMS";
push @no, "Win32.*" unless $^O eq "MSWin32" || $^O eq "cygwin";
$no = join('|', @no);
$no = qr/^(?:$no)$/i;
}
my %ext;
my %static;
sub set_static_extensions {
# adjust results of scan_ext, and also save
# statics in case scan_ext hasn't been called yet.
# if '*' is passed then all XS extensions are static
# (with possible exclusions)
%static = ();
my @list = @_;
if (@_ and $_[0] eq '*') {
my %excl = map {$_=>1} map {m/^!(.*)$/} @_[1 .. $#_];
@list = grep {!exists $excl{$_}} keys %ext;
}
for (@list) {
$static{$_} = 1;
$ext{$_} = 'static' if $ext{$_} && $ext{$_} eq 'dynamic';
}
}
sub scan_ext
{
my $dir = shift;
find_ext("$dir/");
extensions();
}
sub _ext_eq {
my $key = shift;
sub {
sort grep $ext{$_} eq $key, keys %ext;
}
}
*dynamic_ext = _ext_eq('dynamic');
*static_ext = _ext_eq('static');
*nonxs_ext = _ext_eq('nonxs');
sub _ext_ne {
my $key = shift;
sub {
sort grep $ext{$_} ne $key, keys %ext;
}
}
*extensions = _ext_ne('known');
# faithfully copy Configure in not including nonxs extensions for the nonce
*known_extensions = _ext_ne('nonxs');
sub is_static
{
return $ext{$_[0]} eq 'static'
}
sub has_xs_or_c {
my $dir = shift;
opendir my $dh, $dir or die "opendir $dir: $!";
while (defined (my $item = readdir $dh)) {
return 1 if $item =~ /\.xs$/;
return 1 if $item =~ /\.c$/;
}
return 0;
}
# Function to find available extensions, ignoring DynaLoader
sub find_ext
{
my $ext_dir = shift;
opendir my $dh, "$ext_dir";
while (defined (my $item = readdir $dh)) {
next if $item =~ /^\.\.?$/;
next if $item eq "DynaLoader";
next unless -d "$ext_dir$item";
my $this_ext = $item;
my $leaf = $item;
$this_ext =~ s!-!/!g;
$leaf =~ s/.*-//;
# Temporary hack to cope with smokers that are not clearing directories:
next if $ext{$this_ext};
if (has_xs_or_c("$ext_dir$item")) {
$ext{$this_ext} = $static{$this_ext} ? 'static' : 'dynamic';
} else {
$ext{$this_ext} = 'nonxs';
}
$ext{$this_ext} = 'known' if $ext{$this_ext} && $item =~ $no;
}
}
1;
# Local variables:
# cperl-indent-level: 4
# indent-tabs-mode: nil
# End:
#
# ex: set ts=8 sts=4 sw=4 et:
|
