1package FindExt; 2 3our $VERSION = '1.02'; 4 5use strict; 6use warnings; 7 8my $no = join('|',qw(GDBM_File ODBM_File NDBM_File DB_File 9 VMS Sys-Syslog IPC-SysV I18N-Langinfo)); 10$no = qr/^(?:$no)$/i; 11 12my %ext; 13my %static; 14 15sub set_static_extensions { 16 # adjust results of scan_ext, and also save 17 # statics in case scan_ext hasn't been called yet. 18 # if '*' is passed then all XS extensions are static 19 # (with possible exclusions) 20 %static = (); 21 my @list = @_; 22 if ($_[0] eq '*') { 23 my %excl = map {$_=>1} map {m/^!(.*)$/} @_[1 .. $#_]; 24 @list = grep {!exists $excl{$_}} keys %ext; 25 } 26 for (@list) { 27 $static{$_} = 1; 28 $ext{$_} = 'static' if $ext{$_} && $ext{$_} eq 'dynamic'; 29 } 30} 31 32sub scan_ext 33{ 34 my $dir = shift; 35 find_ext("$dir/"); 36 extensions(); 37} 38 39sub _ext_eq { 40 my $key = shift; 41 sub { 42 sort grep $ext{$_} eq $key, keys %ext; 43 } 44} 45 46*dynamic_ext = _ext_eq('dynamic'); 47*static_ext = _ext_eq('static'); 48*nonxs_ext = _ext_eq('nonxs'); 49 50sub _ext_ne { 51 my $key = shift; 52 sub { 53 sort grep $ext{$_} ne $key, keys %ext; 54 } 55} 56 57*extensions = _ext_ne('known'); 58# faithfully copy Configure in not including nonxs extensions for the nonce 59*known_extensions = _ext_ne('nonxs'); 60 61sub is_static 62{ 63 return $ext{$_[0]} eq 'static' 64} 65 66# Function to find available extensions, ignoring DynaLoader 67sub find_ext 68{ 69 my $ext_dir = shift; 70 opendir my $dh, "$ext_dir"; 71 while (defined (my $item = readdir $dh)) { 72 next if $item =~ /^\.\.?$/; 73 next if $item eq "DynaLoader"; 74 next unless -d "$ext_dir$item"; 75 my $this_ext = $item; 76 my $leaf = $item; 77 78 $this_ext =~ s!-!/!g; 79 $leaf =~ s/.*-//; 80 81 if (-f "$ext_dir$item/$leaf.xs" || -f "$ext_dir$item/$leaf.c" ) { 82 $ext{$this_ext} = $static{$this_ext} ? 'static' : 'dynamic'; 83 } else { 84 $ext{$this_ext} = 'nonxs'; 85 } 86 $ext{$this_ext} = 'known' if $ext{$this_ext} && $item =~ $no; 87 } 88} 89 901; 91# Local variables: 92# cperl-indent-level: 4 93# indent-tabs-mode: nil 94# End: 95# 96# ex: set ts=8 sts=4 sw=4 et: 97