1#line 1
2package Module::AutoInstall;
3
4use strict;
5use Cwd                 ();
6use ExtUtils::MakeMaker ();
7
8use vars qw{$VERSION};
9BEGIN {
10	$VERSION = '1.03';
11}
12
13# special map on pre-defined feature sets
14my %FeatureMap = (
15    ''      => 'Core Features',    # XXX: deprecated
16    '-core' => 'Core Features',
17);
18
19# various lexical flags
20my ( @Missing, @Existing,  %DisabledTests, $UnderCPAN,     $HasCPANPLUS );
21my (
22    $Config, $CheckOnly, $SkipInstall, $AcceptDefault, $TestOnly, $AllDeps
23);
24my ( $PostambleActions, $PostambleUsed );
25
26# See if it's a testing or non-interactive session
27_accept_default( $ENV{AUTOMATED_TESTING} or ! -t STDIN );
28_init();
29
30sub _accept_default {
31    $AcceptDefault = shift;
32}
33
34sub missing_modules {
35    return @Missing;
36}
37
38sub do_install {
39    __PACKAGE__->install(
40        [
41            $Config
42            ? ( UNIVERSAL::isa( $Config, 'HASH' ) ? %{$Config} : @{$Config} )
43            : ()
44        ],
45        @Missing,
46    );
47}
48
49# initialize various flags, and/or perform install
50sub _init {
51    foreach my $arg (
52        @ARGV,
53        split(
54            /[\s\t]+/,
55            $ENV{PERL_AUTOINSTALL} || $ENV{PERL_EXTUTILS_AUTOINSTALL} || ''
56        )
57      )
58    {
59        if ( $arg =~ /^--config=(.*)$/ ) {
60            $Config = [ split( ',', $1 ) ];
61        }
62        elsif ( $arg =~ /^--installdeps=(.*)$/ ) {
63            __PACKAGE__->install( $Config, @Missing = split( /,/, $1 ) );
64            exit 0;
65        }
66        elsif ( $arg =~ /^--default(?:deps)?$/ ) {
67            $AcceptDefault = 1;
68        }
69        elsif ( $arg =~ /^--check(?:deps)?$/ ) {
70            $CheckOnly = 1;
71        }
72        elsif ( $arg =~ /^--skip(?:deps)?$/ ) {
73            $SkipInstall = 1;
74        }
75        elsif ( $arg =~ /^--test(?:only)?$/ ) {
76            $TestOnly = 1;
77        }
78        elsif ( $arg =~ /^--all(?:deps)?$/ ) {
79            $AllDeps = 1;
80        }
81    }
82}
83
84# overrides MakeMaker's prompt() to automatically accept the default choice
85sub _prompt {
86    goto &ExtUtils::MakeMaker::prompt unless $AcceptDefault;
87
88    my ( $prompt, $default ) = @_;
89    my $y = ( $default =~ /^[Yy]/ );
90
91    print $prompt, ' [', ( $y ? 'Y' : 'y' ), '/', ( $y ? 'n' : 'N' ), '] ';
92    print "$default\n";
93    return $default;
94}
95
96# the workhorse
97sub import {
98    my $class = shift;
99    my @args  = @_ or return;
100    my $core_all;
101
102    print "*** $class version " . $class->VERSION . "\n";
103    print "*** Checking for Perl dependencies...\n";
104
105    my $cwd = Cwd::cwd();
106
107    $Config = [];
108
109    my $maxlen = length(
110        (
111            sort   { length($b) <=> length($a) }
112              grep { /^[^\-]/ }
113              map  {
114                ref($_)
115                  ? ( ( ref($_) eq 'HASH' ) ? keys(%$_) : @{$_} )
116                  : ''
117              }
118              map { +{@args}->{$_} }
119              grep { /^[^\-]/ or /^-core$/i } keys %{ +{@args} }
120        )[0]
121    );
122
123    # We want to know if we're under CPAN early to avoid prompting, but
124    # if we aren't going to try and install anything anyway then skip the
125    # check entirely since we don't want to have to load (and configure)
126    # an old CPAN just for a cosmetic message
127
128    $UnderCPAN = _check_lock(1) unless $SkipInstall;
129
130    while ( my ( $feature, $modules ) = splice( @args, 0, 2 ) ) {
131        my ( @required, @tests, @skiptests );
132        my $default  = 1;
133        my $conflict = 0;
134
135        if ( $feature =~ m/^-(\w+)$/ ) {
136            my $option = lc($1);
137
138            # check for a newer version of myself
139            _update_to( $modules, @_ ) and return if $option eq 'version';
140
141            # sets CPAN configuration options
142            $Config = $modules if $option eq 'config';
143
144            # promote every features to core status
145            $core_all = ( $modules =~ /^all$/i ) and next
146              if $option eq 'core';
147
148            next unless $option eq 'core';
149        }
150
151        print "[" . ( $FeatureMap{ lc($feature) } || $feature ) . "]\n";
152
153        $modules = [ %{$modules} ] if UNIVERSAL::isa( $modules, 'HASH' );
154
155        unshift @$modules, -default => &{ shift(@$modules) }
156          if ( ref( $modules->[0] ) eq 'CODE' );    # XXX: bugward combatability
157
158        while ( my ( $mod, $arg ) = splice( @$modules, 0, 2 ) ) {
159            if ( $mod =~ m/^-(\w+)$/ ) {
160                my $option = lc($1);
161
162                $default   = $arg    if ( $option eq 'default' );
163                $conflict  = $arg    if ( $option eq 'conflict' );
164                @tests     = @{$arg} if ( $option eq 'tests' );
165                @skiptests = @{$arg} if ( $option eq 'skiptests' );
166
167                next;
168            }
169
170            printf( "- %-${maxlen}s ...", $mod );
171
172            if ( $arg and $arg =~ /^\D/ ) {
173                unshift @$modules, $arg;
174                $arg = 0;
175            }
176
177            # XXX: check for conflicts and uninstalls(!) them.
178            my $cur = _load($mod);
179            if (_version_cmp ($cur, $arg) >= 0)
180            {
181                print "loaded. ($cur" . ( $arg ? " >= $arg" : '' ) . ")\n";
182                push @Existing, $mod => $arg;
183                $DisabledTests{$_} = 1 for map { glob($_) } @skiptests;
184            }
185            else {
186                if (not defined $cur)   # indeed missing
187                {
188                    print "missing." . ( $arg ? " (would need $arg)" : '' ) . "\n";
189                }
190                else
191                {
192                    # no need to check $arg as _version_cmp ($cur, undef) would satisfy >= above
193                    print "too old. ($cur < $arg)\n";
194                }
195
196                push @required, $mod => $arg;
197            }
198        }
199
200        next unless @required;
201
202        my $mandatory = ( $feature eq '-core' or $core_all );
203
204        if (
205            !$SkipInstall
206            and (
207                $CheckOnly
208                or ($mandatory and $UnderCPAN)
209                or $AllDeps
210                or _prompt(
211                    qq{==> Auto-install the }
212                      . ( @required / 2 )
213                      . ( $mandatory ? ' mandatory' : ' optional' )
214                      . qq{ module(s) from CPAN?},
215                    $default ? 'y' : 'n',
216                ) =~ /^[Yy]/
217            )
218          )
219        {
220            push( @Missing, @required );
221            $DisabledTests{$_} = 1 for map { glob($_) } @skiptests;
222        }
223
224        elsif ( !$SkipInstall
225            and $default
226            and $mandatory
227            and
228            _prompt( qq{==> The module(s) are mandatory! Really skip?}, 'n', )
229            =~ /^[Nn]/ )
230        {
231            push( @Missing, @required );
232            $DisabledTests{$_} = 1 for map { glob($_) } @skiptests;
233        }
234
235        else {
236            $DisabledTests{$_} = 1 for map { glob($_) } @tests;
237        }
238    }
239
240    if ( @Missing and not( $CheckOnly or $UnderCPAN ) ) {
241        require Config;
242        print
243"*** Dependencies will be installed the next time you type '$Config::Config{make}'.\n";
244
245        # make an educated guess of whether we'll need root permission.
246        print "    (You may need to do that as the 'root' user.)\n"
247          if eval '$>';
248    }
249    print "*** $class configuration finished.\n";
250
251    chdir $cwd;
252
253    # import to main::
254    no strict 'refs';
255    *{'main::WriteMakefile'} = \&Write if caller(0) eq 'main';
256}
257
258sub _running_under {
259    my $thing = shift;
260    print <<"END_MESSAGE";
261*** Since we're running under ${thing}, I'll just let it take care
262    of the dependency's installation later.
263END_MESSAGE
264    return 1;
265}
266
267# Check to see if we are currently running under CPAN.pm and/or CPANPLUS;
268# if we are, then we simply let it taking care of our dependencies
269sub _check_lock {
270    return unless @Missing or @_;
271
272    my $cpan_env = $ENV{PERL5_CPAN_IS_RUNNING};
273
274    if ($ENV{PERL5_CPANPLUS_IS_RUNNING}) {
275        return _running_under($cpan_env ? 'CPAN' : 'CPANPLUS');
276    }
277
278    require CPAN;
279
280    if ($CPAN::VERSION > '1.89') {
281        if ($cpan_env) {
282            return _running_under('CPAN');
283        }
284        return; # CPAN.pm new enough, don't need to check further
285    }
286
287    # last ditch attempt, this -will- configure CPAN, very sorry
288
289    _load_cpan(1); # force initialize even though it's already loaded
290
291    # Find the CPAN lock-file
292    my $lock = MM->catfile( $CPAN::Config->{cpan_home}, ".lock" );
293    return unless -f $lock;
294
295    # Check the lock
296    local *LOCK;
297    return unless open(LOCK, $lock);
298
299    if (
300            ( $^O eq 'MSWin32' ? _under_cpan() : <LOCK> == getppid() )
301        and ( $CPAN::Config->{prerequisites_policy} || '' ) ne 'ignore'
302    ) {
303        print <<'END_MESSAGE';
304
305*** Since we're running under CPAN, I'll just let it take care
306    of the dependency's installation later.
307END_MESSAGE
308        return 1;
309    }
310
311    close LOCK;
312    return;
313}
314
315sub install {
316    my $class = shift;
317
318    my $i;    # used below to strip leading '-' from config keys
319    my @config = ( map { s/^-// if ++$i; $_ } @{ +shift } );
320
321    my ( @modules, @installed );
322    while ( my ( $pkg, $ver ) = splice( @_, 0, 2 ) ) {
323
324        # grep out those already installed
325        if ( _version_cmp( _load($pkg), $ver ) >= 0 ) {
326            push @installed, $pkg;
327        }
328        else {
329            push @modules, $pkg, $ver;
330        }
331    }
332
333    return @installed unless @modules;  # nothing to do
334    return @installed if _check_lock(); # defer to the CPAN shell
335
336    print "*** Installing dependencies...\n";
337
338    return unless _connected_to('cpan.org');
339
340    my %args = @config;
341    my %failed;
342    local *FAILED;
343    if ( $args{do_once} and open( FAILED, '.#autoinstall.failed' ) ) {
344        while (<FAILED>) { chomp; $failed{$_}++ }
345        close FAILED;
346
347        my @newmod;
348        while ( my ( $k, $v ) = splice( @modules, 0, 2 ) ) {
349            push @newmod, ( $k => $v ) unless $failed{$k};
350        }
351        @modules = @newmod;
352    }
353
354    if ( _has_cpanplus() and not $ENV{PERL_AUTOINSTALL_PREFER_CPAN} ) {
355        _install_cpanplus( \@modules, \@config );
356    } else {
357        _install_cpan( \@modules, \@config );
358    }
359
360    print "*** $class installation finished.\n";
361
362    # see if we have successfully installed them
363    while ( my ( $pkg, $ver ) = splice( @modules, 0, 2 ) ) {
364        if ( _version_cmp( _load($pkg), $ver ) >= 0 ) {
365            push @installed, $pkg;
366        }
367        elsif ( $args{do_once} and open( FAILED, '>> .#autoinstall.failed' ) ) {
368            print FAILED "$pkg\n";
369        }
370    }
371
372    close FAILED if $args{do_once};
373
374    return @installed;
375}
376
377sub _install_cpanplus {
378    my @modules   = @{ +shift };
379    my @config    = _cpanplus_config( @{ +shift } );
380    my $installed = 0;
381
382    require CPANPLUS::Backend;
383    my $cp   = CPANPLUS::Backend->new;
384    my $conf = $cp->configure_object;
385
386    return unless $conf->can('conf') # 0.05x+ with "sudo" support
387               or _can_write($conf->_get_build('base'));  # 0.04x
388
389    # if we're root, set UNINST=1 to avoid trouble unless user asked for it.
390    my $makeflags = $conf->get_conf('makeflags') || '';
391    if ( UNIVERSAL::isa( $makeflags, 'HASH' ) ) {
392        # 0.03+ uses a hashref here
393        $makeflags->{UNINST} = 1 unless exists $makeflags->{UNINST};
394
395    } else {
396        # 0.02 and below uses a scalar
397        $makeflags = join( ' ', split( ' ', $makeflags ), 'UNINST=1' )
398          if ( $makeflags !~ /\bUNINST\b/ and eval qq{ $> eq '0' } );
399
400    }
401    $conf->set_conf( makeflags => $makeflags );
402    $conf->set_conf( prereqs   => 1 );
403
404
405
406    while ( my ( $key, $val ) = splice( @config, 0, 2 ) ) {
407        $conf->set_conf( $key, $val );
408    }
409
410    my $modtree = $cp->module_tree;
411    while ( my ( $pkg, $ver ) = splice( @modules, 0, 2 ) ) {
412        print "*** Installing $pkg...\n";
413
414        MY::preinstall( $pkg, $ver ) or next if defined &MY::preinstall;
415
416        my $success;
417        my $obj = $modtree->{$pkg};
418
419        if ( $obj and _version_cmp( $obj->{version}, $ver ) >= 0 ) {
420            my $pathname = $pkg;
421            $pathname =~ s/::/\\W/;
422
423            foreach my $inc ( grep { m/$pathname.pm/i } keys(%INC) ) {
424                delete $INC{$inc};
425            }
426
427            my $rv = $cp->install( modules => [ $obj->{module} ] );
428
429            if ( $rv and ( $rv->{ $obj->{module} } or $rv->{ok} ) ) {
430                print "*** $pkg successfully installed.\n";
431                $success = 1;
432            } else {
433                print "*** $pkg installation cancelled.\n";
434                $success = 0;
435            }
436
437            $installed += $success;
438        } else {
439            print << ".";
440*** Could not find a version $ver or above for $pkg; skipping.
441.
442        }
443
444        MY::postinstall( $pkg, $ver, $success ) if defined &MY::postinstall;
445    }
446
447    return $installed;
448}
449
450sub _cpanplus_config {
451	my @config = ();
452	while ( @_ ) {
453		my ($key, $value) = (shift(), shift());
454		if ( $key eq 'prerequisites_policy' ) {
455			if ( $value eq 'follow' ) {
456				$value = CPANPLUS::Internals::Constants::PREREQ_INSTALL();
457			} elsif ( $value eq 'ask' ) {
458				$value = CPANPLUS::Internals::Constants::PREREQ_ASK();
459			} elsif ( $value eq 'ignore' ) {
460				$value = CPANPLUS::Internals::Constants::PREREQ_IGNORE();
461			} else {
462				die "*** Cannot convert option $key = '$value' to CPANPLUS version.\n";
463			}
464		} else {
465			die "*** Cannot convert option $key to CPANPLUS version.\n";
466		}
467	}
468	return @config;
469}
470
471sub _install_cpan {
472    my @modules   = @{ +shift };
473    my @config    = @{ +shift };
474    my $installed = 0;
475    my %args;
476
477    _load_cpan();
478    require Config;
479
480    if (CPAN->VERSION < 1.80) {
481        # no "sudo" support, probe for writableness
482        return unless _can_write( MM->catfile( $CPAN::Config->{cpan_home}, 'sources' ) )
483                  and _can_write( $Config::Config{sitelib} );
484    }
485
486    # if we're root, set UNINST=1 to avoid trouble unless user asked for it.
487    my $makeflags = $CPAN::Config->{make_install_arg} || '';
488    $CPAN::Config->{make_install_arg} =
489      join( ' ', split( ' ', $makeflags ), 'UNINST=1' )
490      if ( $makeflags !~ /\bUNINST\b/ and eval qq{ $> eq '0' } );
491
492    # don't show start-up info
493    $CPAN::Config->{inhibit_startup_message} = 1;
494
495    # set additional options
496    while ( my ( $opt, $arg ) = splice( @config, 0, 2 ) ) {
497        ( $args{$opt} = $arg, next )
498          if $opt =~ /^force$/;    # pseudo-option
499        $CPAN::Config->{$opt} = $arg;
500    }
501
502    local $CPAN::Config->{prerequisites_policy} = 'follow';
503
504    while ( my ( $pkg, $ver ) = splice( @modules, 0, 2 ) ) {
505        MY::preinstall( $pkg, $ver ) or next if defined &MY::preinstall;
506
507        print "*** Installing $pkg...\n";
508
509        my $obj     = CPAN::Shell->expand( Module => $pkg );
510        my $success = 0;
511
512        if ( $obj and _version_cmp( $obj->cpan_version, $ver ) >= 0 ) {
513            my $pathname = $pkg;
514            $pathname =~ s/::/\\W/;
515
516            foreach my $inc ( grep { m/$pathname.pm/i } keys(%INC) ) {
517                delete $INC{$inc};
518            }
519
520            my $rv = $args{force} ? CPAN::Shell->force( install => $pkg )
521                                  : CPAN::Shell->install($pkg);
522            $rv ||= eval {
523                $CPAN::META->instance( 'CPAN::Distribution', $obj->cpan_file, )
524                  ->{install}
525                  if $CPAN::META;
526            };
527
528            if ( $rv eq 'YES' ) {
529                print "*** $pkg successfully installed.\n";
530                $success = 1;
531            }
532            else {
533                print "*** $pkg installation failed.\n";
534                $success = 0;
535            }
536
537            $installed += $success;
538        }
539        else {
540            print << ".";
541*** Could not find a version $ver or above for $pkg; skipping.
542.
543        }
544
545        MY::postinstall( $pkg, $ver, $success ) if defined &MY::postinstall;
546    }
547
548    return $installed;
549}
550
551sub _has_cpanplus {
552    return (
553        $HasCPANPLUS = (
554            $INC{'CPANPLUS/Config.pm'}
555              or _load('CPANPLUS::Shell::Default')
556        )
557    );
558}
559
560# make guesses on whether we're under the CPAN installation directory
561sub _under_cpan {
562    require Cwd;
563    require File::Spec;
564
565    my $cwd  = File::Spec->canonpath( Cwd::cwd() );
566    my $cpan = File::Spec->canonpath( $CPAN::Config->{cpan_home} );
567
568    return ( index( $cwd, $cpan ) > -1 );
569}
570
571sub _update_to {
572    my $class = __PACKAGE__;
573    my $ver   = shift;
574
575    return
576      if _version_cmp( _load($class), $ver ) >= 0;  # no need to upgrade
577
578    if (
579        _prompt( "==> A newer version of $class ($ver) is required. Install?",
580            'y' ) =~ /^[Nn]/
581      )
582    {
583        die "*** Please install $class $ver manually.\n";
584    }
585
586    print << ".";
587*** Trying to fetch it from CPAN...
588.
589
590    # install ourselves
591    _load($class) and return $class->import(@_)
592      if $class->install( [], $class, $ver );
593
594    print << '.'; exit 1;
595
596*** Cannot bootstrap myself. :-( Installation terminated.
597.
598}
599
600# check if we're connected to some host, using inet_aton
601sub _connected_to {
602    my $site = shift;
603
604    return (
605        ( _load('Socket') and Socket::inet_aton($site) ) or _prompt(
606            qq(
607*** Your host cannot resolve the domain name '$site', which
608    probably means the Internet connections are unavailable.
609==> Should we try to install the required module(s) anyway?), 'n'
610          ) =~ /^[Yy]/
611    );
612}
613
614# check if a directory is writable; may create it on demand
615sub _can_write {
616    my $path = shift;
617    mkdir( $path, 0755 ) unless -e $path;
618
619    return 1 if -w $path;
620
621    print << ".";
622*** You are not allowed to write to the directory '$path';
623    the installation may fail due to insufficient permissions.
624.
625
626    if (
627        eval '$>' and lc(`sudo -V`) =~ /version/ and _prompt(
628            qq(
629==> Should we try to re-execute the autoinstall process with 'sudo'?),
630            ((-t STDIN) ? 'y' : 'n')
631        ) =~ /^[Yy]/
632      )
633    {
634
635        # try to bootstrap ourselves from sudo
636        print << ".";
637*** Trying to re-execute the autoinstall process with 'sudo'...
638.
639        my $missing = join( ',', @Missing );
640        my $config = join( ',',
641            UNIVERSAL::isa( $Config, 'HASH' ) ? %{$Config} : @{$Config} )
642          if $Config;
643
644        return
645          unless system( 'sudo', $^X, $0, "--config=$config",
646            "--installdeps=$missing" );
647
648        print << ".";
649*** The 'sudo' command exited with error!  Resuming...
650.
651    }
652
653    return _prompt(
654        qq(
655==> Should we try to install the required module(s) anyway?), 'n'
656    ) =~ /^[Yy]/;
657}
658
659# load a module and return the version it reports
660sub _load {
661    my $mod  = pop;    # class/instance doesn't matter
662    my $file = $mod;
663
664    $file =~ s|::|/|g;
665    $file .= '.pm';
666
667    local $@;
668    return eval { require $file; $mod->VERSION } || ( $@ ? undef: 0 );
669}
670
671# Load CPAN.pm and it's configuration
672sub _load_cpan {
673    return if $CPAN::VERSION and $CPAN::Config and not @_;
674    require CPAN;
675
676    # CPAN-1.82+ adds CPAN::Config::AUTOLOAD to redirect to
677    #    CPAN::HandleConfig->load. CPAN reports that the redirection
678    #    is deprecated in a warning printed at the user.
679
680    # CPAN-1.81 expects CPAN::HandleConfig->load, does not have
681    #   $CPAN::HandleConfig::VERSION but cannot handle
682    #   CPAN::Config->load
683
684    # Which "versions expect CPAN::Config->load?
685
686    if ( $CPAN::HandleConfig::VERSION
687        || CPAN::HandleConfig->can('load')
688    ) {
689        # Newer versions of CPAN have a HandleConfig module
690        CPAN::HandleConfig->load;
691    } else {
692    	# Older versions had the load method in Config directly
693        CPAN::Config->load;
694    }
695}
696
697# compare two versions, either use Sort::Versions or plain comparison
698# return values same as <=>
699sub _version_cmp {
700    my ( $cur, $min ) = @_;
701    return -1 unless defined $cur;  # if 0 keep comparing
702    return 1 unless $min;
703
704    $cur =~ s/\s+$//;
705
706    # check for version numbers that are not in decimal format
707    if ( ref($cur) or ref($min) or $cur =~ /v|\..*\./ or $min =~ /v|\..*\./ ) {
708        if ( ( $version::VERSION or defined( _load('version') )) and
709             version->can('new')
710            ) {
711
712            # use version.pm if it is installed.
713            return version->new($cur) <=> version->new($min);
714        }
715        elsif ( $Sort::Versions::VERSION or defined( _load('Sort::Versions') ) )
716        {
717
718            # use Sort::Versions as the sorting algorithm for a.b.c versions
719            return Sort::Versions::versioncmp( $cur, $min );
720        }
721
722        warn "Cannot reliably compare non-decimal formatted versions.\n"
723          . "Please install version.pm or Sort::Versions.\n";
724    }
725
726    # plain comparison
727    local $^W = 0;    # shuts off 'not numeric' bugs
728    return $cur <=> $min;
729}
730
731# nothing; this usage is deprecated.
732sub main::PREREQ_PM { return {}; }
733
734sub _make_args {
735    my %args = @_;
736
737    $args{PREREQ_PM} = { %{ $args{PREREQ_PM} || {} }, @Existing, @Missing }
738      if $UnderCPAN or $TestOnly;
739
740    if ( $args{EXE_FILES} and -e 'MANIFEST' ) {
741        require ExtUtils::Manifest;
742        my $manifest = ExtUtils::Manifest::maniread('MANIFEST');
743
744        $args{EXE_FILES} =
745          [ grep { exists $manifest->{$_} } @{ $args{EXE_FILES} } ];
746    }
747
748    $args{test}{TESTS} ||= 't/*.t';
749    $args{test}{TESTS} = join( ' ',
750        grep { !exists( $DisabledTests{$_} ) }
751          map { glob($_) } split( /\s+/, $args{test}{TESTS} ) );
752
753    my $missing = join( ',', @Missing );
754    my $config =
755      join( ',', UNIVERSAL::isa( $Config, 'HASH' ) ? %{$Config} : @{$Config} )
756      if $Config;
757
758    $PostambleActions = (
759        ($missing and not $UnderCPAN)
760        ? "\$(PERL) $0 --config=$config --installdeps=$missing"
761        : "\$(NOECHO) \$(NOOP)"
762    );
763
764    return %args;
765}
766
767# a wrapper to ExtUtils::MakeMaker::WriteMakefile
768sub Write {
769    require Carp;
770    Carp::croak "WriteMakefile: Need even number of args" if @_ % 2;
771
772    if ($CheckOnly) {
773        print << ".";
774*** Makefile not written in check-only mode.
775.
776        return;
777    }
778
779    my %args = _make_args(@_);
780
781    no strict 'refs';
782
783    $PostambleUsed = 0;
784    local *MY::postamble = \&postamble unless defined &MY::postamble;
785    ExtUtils::MakeMaker::WriteMakefile(%args);
786
787    print << "." unless $PostambleUsed;
788*** WARNING: Makefile written with customized MY::postamble() without
789    including contents from Module::AutoInstall::postamble() --
790    auto installation features disabled.  Please contact the author.
791.
792
793    return 1;
794}
795
796sub postamble {
797    $PostambleUsed = 1;
798
799    return <<"END_MAKE";
800
801config :: installdeps
802\t\$(NOECHO) \$(NOOP)
803
804checkdeps ::
805\t\$(PERL) $0 --checkdeps
806
807installdeps ::
808\t$PostambleActions
809
810END_MAKE
811
812}
813
8141;
815
816__END__
817
818#line 1069
819