1package ExtUtils::HasCompiler; 2$ExtUtils::HasCompiler::VERSION = '0.014'; 3use strict; 4use warnings; 5 6use base 'Exporter'; 7our @EXPORT_OK = qw/can_compile_loadable_object/; 8our %EXPORT_TAGS = (all => \@EXPORT_OK); 9 10use Config; 11use Carp 'carp'; 12use File::Basename 'basename'; 13use File::Spec::Functions qw/catfile catdir rel2abs/; 14use File::Temp qw/tempdir tempfile/; 15 16my $tempdir = tempdir('HASCOMPILERXXXX', CLEANUP => 1, DIR => '.'); 17 18my $loadable_object_format = <<'END'; 19#define PERL_NO_GET_CONTEXT 20#include "EXTERN.h" 21#include "perl.h" 22#include "XSUB.h" 23 24#ifndef PERL_UNUSED_VAR 25#define PERL_UNUSED_VAR(var) 26#endif 27 28XS(exported) { 29#ifdef dVAR 30 dVAR; 31#endif 32 dXSARGS; 33 34 PERL_UNUSED_VAR(cv); /* -W */ 35 PERL_UNUSED_VAR(items); /* -W */ 36 37 XSRETURN_IV(42); 38} 39 40#ifndef XS_EXTERNAL 41#define XS_EXTERNAL(foo) XS(foo) 42#endif 43 44/* we don't want to mess with .def files on mingw */ 45#if defined(WIN32) && defined(__GNUC__) 46# define EXPORT __declspec(dllexport) 47#else 48# define EXPORT 49#endif 50 51EXPORT XS_EXTERNAL(boot_%s) { 52#ifdef dVAR 53 dVAR; 54#endif 55 dXSARGS; 56 57 PERL_UNUSED_VAR(cv); /* -W */ 58 PERL_UNUSED_VAR(items); /* -W */ 59 60 newXS("%s::exported", exported, __FILE__); 61} 62 63END 64 65my $counter = 1; 66my %prelinking = map { $_ => 1 } qw/MSWin32 VMS aix/; 67 68sub can_compile_loadable_object { 69 my %args = @_; 70 71 my $output = $args{output} || \*STDOUT; 72 73 my $config = $args{config} || 'ExtUtils::HasCompiler::Config'; 74 return if not $config->get('usedl'); 75 76 my ($source_handle, $source_name) = tempfile('TESTXXXX', DIR => $tempdir, SUFFIX => '.c', UNLINK => 1); 77 my $basename = basename($source_name, '.c'); 78 79 my $shortname = '_Loadable' . $counter++; 80 my $package = "ExtUtils::HasCompiler::$shortname"; 81 printf $source_handle $loadable_object_format, $basename, $package or do { carp "Couldn't write to $source_name: $!"; return }; 82 close $source_handle or do { carp "Couldn't close $source_name: $!"; return }; 83 84 my $abs_basename = catfile($tempdir, $basename); 85 my $object_file = $abs_basename . $config->get('_o'); 86 my $loadable_object = $abs_basename . '.' . $config->get('dlext'); 87 my $incdir = catdir($config->get('archlibexp'), 'CORE'); 88 89 my ($cc, $ccflags, $optimize, $cccdlflags, $ld, $ldflags, $lddlflags, $libperl, $perllibs) = map { $config->get($_) } qw/cc ccflags optimize cccdlflags ld ldflags lddlflags libperl perllibs/; 90 91 if ($prelinking{$^O}) { 92 require ExtUtils::Mksymlists; 93 ExtUtils::Mksymlists::Mksymlists(NAME => $basename, FILE => $abs_basename, IMPORTS => {}); 94 } 95 my @commands; 96 if ($^O eq 'MSWin32' && $cc =~ /^cl/) { 97 push @commands, qq{$cc $ccflags $cccdlflags $optimize /I "$incdir" /c $source_name /Fo$object_file}; 98 push @commands, qq{$ld $object_file $lddlflags $libperl $perllibs /out:$loadable_object /def:$abs_basename.def /pdb:$abs_basename.pdb}; 99 } 100 elsif ($^O eq 'VMS') { 101 # Mksymlists is only the beginning of the story. 102 open my $opt_fh, '>>', "$abs_basename.opt" or do { carp "Couldn't append to '$abs_basename.opt'"; return }; 103 print $opt_fh "PerlShr/Share\n"; 104 close $opt_fh; 105 106 my $incdirs = $ccflags =~ s{ /inc[^=]+ (?:=)+ (?:\()? ( [^\/\)]* ) }{}xi ? "$1,$incdir" : $incdir; 107 push @commands, qq{$cc $ccflags $optimize /include=($incdirs) $cccdlflags $source_name /obj=$object_file}; 108 push @commands, qq{$ld $ldflags $lddlflags=$loadable_object $object_file,$abs_basename.opt/OPTIONS,${incdir}perlshr_attr.opt/OPTIONS' $perllibs}; 109 } 110 else { 111 my @extra; 112 if ($^O eq 'MSWin32') { 113 my $lib = '-l' . ($libperl =~ /lib([^.]+)\./)[0]; 114 push @extra, "$abs_basename.def", $lib, $perllibs; 115 } 116 elsif ($^O eq 'cygwin') { 117 push @extra, catfile($incdir, $config->get('useshrplib') ? 'libperl.dll.a' : 'libperl.a'); 118 } 119 elsif ($^O eq 'aix') { 120 $lddlflags =~ s/\Q$(BASEEXT)\E/$abs_basename/; 121 $lddlflags =~ s/\Q$(PERL_INC)\E/$incdir/; 122 } 123 elsif ($^O eq 'android') { 124 push @extra, qq{"-L$incdir"}, '-lperl', $perllibs; 125 } 126 push @commands, qq{$cc $ccflags $optimize "-I$incdir" $cccdlflags -c $source_name -o $object_file}; 127 push @commands, qq{$cc $optimize $object_file -o $loadable_object $lddlflags @extra}; 128 } 129 130 for my $command (@commands) { 131 print $output "$command\n" if not $args{quiet}; 132 system $command and do { carp "Couldn't execute $command: $!"; return }; 133 } 134 135 # Skip loading when cross-compiling 136 return 1 if exists $args{skip_load} ? $args{skip_load} : $config->get('usecrosscompile'); 137 138 require DynaLoader; 139 local @DynaLoader::dl_require_symbols = "boot_$basename"; 140 my $handle = DynaLoader::dl_load_file(rel2abs($loadable_object), 0); 141 if ($handle) { 142 my $symbol = DynaLoader::dl_find_symbol($handle, "boot_$basename") or do { carp "Couldn't find boot symbol for $basename"; return }; 143 my $compilet = DynaLoader::dl_install_xsub('__ANON__::__ANON__', $symbol, $source_name); 144 my $ret = eval { $compilet->(); $package->exported } or carp $@; 145 delete $ExtUtils::HasCompiler::{"$shortname\::"}; 146 eval { DynaLoader::dl_unload_file($handle) } or carp $@; 147 return defined $ret && $ret == 42; 148 } 149 else { 150 carp "Couldn't load $loadable_object: " . DynaLoader::dl_error(); 151 return; 152 } 153} 154 155sub ExtUtils::HasCompiler::Config::get { 156 my (undef, $key) = @_; 157 return $ENV{uc $key} || $Config{$key}; 158} 159 1601; 161