1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
package FindExt;
our $VERSION = '1.02';
use strict;
use warnings;
my $no = join('|',qw(GDBM_File ODBM_File NDBM_File DB_File
VMS Syslog IPC-SysV Langinfo));
$no = qr/^(?:$no)$/i;
my %ext;
my %static;
sub set_static_extensions {
# adjust results of scan_ext, and also save
# statics in case scan_ext hasn't been called yet.
# if '*' is passed then all XS extensions are static
# (with possible exclusions)
%static = ();
my @list = @_;
if ($_[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 dynamic_ext
{
return sort grep $ext{$_} eq 'dynamic',keys %ext;
}
sub static_ext
{
return sort grep $ext{$_} eq 'static',keys %ext;
}
sub nonxs_ext
{
return sort grep $ext{$_} eq 'nonxs',keys %ext;
}
sub extensions
{
return sort grep $ext{$_} ne 'known',keys %ext;
}
sub known_extensions
{
# faithfully copy Configure in not including nonxs extensions for the nonce
return sort grep $ext{$_} ne 'nonxs',keys %ext;
}
sub is_static
{
return $ext{$_[0]} eq 'static'
}
# Function to recursively find available extensions, ignoring DynaLoader
# NOTE: recursion limit of 10 to prevent runaway in case of symlink madness
sub find_ext
{
my $ext_dir = shift;
my $prefix = shift;
opendir my $dh, "$ext_dir$prefix";
while (defined (my $item = readdir $dh)) {
next if $item =~ /^\.\.?$/;
next if $item eq "DynaLoader";
my $this_ext = my $this_ext_dir = "$prefix$item";
my $leaf = $item;
$this_ext =~ s!-!/!g;
$leaf =~ s/.*-//;
if (-f "$ext_dir$this_ext_dir/$leaf.xs" || -f "$ext_dir$this_ext_dir/$leaf.c" ) {
$ext{$this_ext} = $static{$this_ext} ? 'static' : 'dynamic';
} elsif (-f "$ext_dir$this_ext_dir/Makefile.PL") {
$ext{$this_ext} = 'nonxs';
} else {
# It's not actually an extension. So recurse into it.
if (-d "$ext_dir$this_ext_dir" && $prefix =~ tr#/## < 10) {
find_ext($ext_dir, "$this_ext_dir/");
}
}
$ext{$this_ext} = 'known' if $ext{$this_ext} && $item =~ $no;
}
# Special case: Add in modules that nest beyond the first level.
# Currently threads/shared and Hash/Util/FieldHash, since they are
# not picked up by the recursive find above (and adding in general
# recursive finding breaks SDBM_File/sdbm).
# A.D. 20011025 (SDBM), ajgough 20071008 (FieldHash)
if (!$prefix && -d "${ext_dir}threads/shared") {
$ext{"threads/shared"} = 'dynamic';
}
if (!$prefix && -d "${ext_dir}Hash/Util/FieldHash") {
$ext{"Hash/Util/FieldHash"} = 'dynamic';
}
}
1;
# Local variables:
# cperl-indent-level: 4
# indent-tabs-mode: nil
# End:
#
# ex: set ts=8 sts=4 sw=4 et:
|
