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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
package ExtUtils::HasCompiler;
$ExtUtils::HasCompiler::VERSION = '0.014';
use strict;
use warnings;
use base 'Exporter';
our @EXPORT_OK = qw/can_compile_loadable_object/;
our %EXPORT_TAGS = (all => \@EXPORT_OK);
use Config;
use Carp 'carp';
use File::Basename 'basename';
use File::Spec::Functions qw/catfile catdir rel2abs/;
use File::Temp qw/tempdir tempfile/;
my $tempdir = tempdir('HASCOMPILERXXXX', CLEANUP => 1, DIR => '.');
my $loadable_object_format = <<'END';
#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#ifndef PERL_UNUSED_VAR
#define PERL_UNUSED_VAR(var)
#endif
XS(exported) {
#ifdef dVAR
dVAR;
#endif
dXSARGS;
PERL_UNUSED_VAR(cv); /* -W */
PERL_UNUSED_VAR(items); /* -W */
XSRETURN_IV(42);
}
#ifndef XS_EXTERNAL
#define XS_EXTERNAL(foo) XS(foo)
#endif
/* we don't want to mess with .def files on mingw */
#if defined(WIN32) && defined(__GNUC__)
# define EXPORT __declspec(dllexport)
#else
# define EXPORT
#endif
EXPORT XS_EXTERNAL(boot_%s) {
#ifdef dVAR
dVAR;
#endif
dXSARGS;
PERL_UNUSED_VAR(cv); /* -W */
PERL_UNUSED_VAR(items); /* -W */
newXS("%s::exported", exported, __FILE__);
}
END
my $counter = 1;
my %prelinking = map { $_ => 1 } qw/MSWin32 VMS aix/;
sub can_compile_loadable_object {
my %args = @_;
my $output = $args{output} || \*STDOUT;
my $config = $args{config} || 'ExtUtils::HasCompiler::Config';
return if not $config->get('usedl');
my ($source_handle, $source_name) = tempfile('TESTXXXX', DIR => $tempdir, SUFFIX => '.c', UNLINK => 1);
my $basename = basename($source_name, '.c');
my $shortname = '_Loadable' . $counter++;
my $package = "ExtUtils::HasCompiler::$shortname";
printf $source_handle $loadable_object_format, $basename, $package or do { carp "Couldn't write to $source_name: $!"; return };
close $source_handle or do { carp "Couldn't close $source_name: $!"; return };
my $abs_basename = catfile($tempdir, $basename);
my $object_file = $abs_basename . $config->get('_o');
my $loadable_object = $abs_basename . '.' . $config->get('dlext');
my $incdir = catdir($config->get('archlibexp'), 'CORE');
my ($cc, $ccflags, $optimize, $cccdlflags, $ld, $ldflags, $lddlflags, $libperl, $perllibs) = map { $config->get($_) } qw/cc ccflags optimize cccdlflags ld ldflags lddlflags libperl perllibs/;
if ($prelinking{$^O}) {
require ExtUtils::Mksymlists;
ExtUtils::Mksymlists::Mksymlists(NAME => $basename, FILE => $abs_basename, IMPORTS => {});
}
my @commands;
if ($^O eq 'MSWin32' && $cc =~ /^cl/) {
push @commands, qq{$cc $ccflags $cccdlflags $optimize /I "$incdir" /c $source_name /Fo$object_file};
push @commands, qq{$ld $object_file $lddlflags $libperl $perllibs /out:$loadable_object /def:$abs_basename.def /pdb:$abs_basename.pdb};
}
elsif ($^O eq 'VMS') {
# Mksymlists is only the beginning of the story.
open my $opt_fh, '>>', "$abs_basename.opt" or do { carp "Couldn't append to '$abs_basename.opt'"; return };
print $opt_fh "PerlShr/Share\n";
close $opt_fh;
my $incdirs = $ccflags =~ s{ /inc[^=]+ (?:=)+ (?:\()? ( [^\/\)]* ) }{}xi ? "$1,$incdir" : $incdir;
push @commands, qq{$cc $ccflags $optimize /include=($incdirs) $cccdlflags $source_name /obj=$object_file};
push @commands, qq{$ld $ldflags $lddlflags=$loadable_object $object_file,$abs_basename.opt/OPTIONS,${incdir}perlshr_attr.opt/OPTIONS' $perllibs};
}
else {
my @extra;
if ($^O eq 'MSWin32') {
my $lib = '-l' . ($libperl =~ /lib([^.]+)\./)[0];
push @extra, "$abs_basename.def", $lib, $perllibs;
}
elsif ($^O eq 'cygwin') {
push @extra, catfile($incdir, $config->get('useshrplib') ? 'libperl.dll.a' : 'libperl.a');
}
elsif ($^O eq 'aix') {
$lddlflags =~ s/\Q$(BASEEXT)\E/$abs_basename/;
$lddlflags =~ s/\Q$(PERL_INC)\E/$incdir/;
}
elsif ($^O eq 'android') {
push @extra, qq{"-L$incdir"}, '-lperl', $perllibs;
}
push @commands, qq{$cc $ccflags $optimize "-I$incdir" $cccdlflags -c $source_name -o $object_file};
push @commands, qq{$cc $optimize $object_file -o $loadable_object $lddlflags @extra};
}
for my $command (@commands) {
print $output "$command\n" if not $args{quiet};
system $command and do { carp "Couldn't execute $command: $!"; return };
}
# Skip loading when cross-compiling
return 1 if exists $args{skip_load} ? $args{skip_load} : $config->get('usecrosscompile');
require DynaLoader;
local @DynaLoader::dl_require_symbols = "boot_$basename";
my $handle = DynaLoader::dl_load_file(rel2abs($loadable_object), 0);
if ($handle) {
my $symbol = DynaLoader::dl_find_symbol($handle, "boot_$basename") or do { carp "Couldn't find boot symbol for $basename"; return };
my $compilet = DynaLoader::dl_install_xsub('__ANON__::__ANON__', $symbol, $source_name);
my $ret = eval { $compilet->(); $package->exported } or carp $@;
delete $ExtUtils::HasCompiler::{"$shortname\::"};
eval { DynaLoader::dl_unload_file($handle) } or carp $@;
return defined $ret && $ret == 42;
}
else {
carp "Couldn't load $loadable_object: " . DynaLoader::dl_error();
return;
}
}
sub ExtUtils::HasCompiler::Config::get {
my (undef, $key) = @_;
return $ENV{uc $key} || $Config{$key};
}
1;
|
