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bÑ¿Ï„td?_‹uÐb&=LV[(ÃÎ ?÷     ;package ExtUtils::MM_Any;

use strict;
our $VERSION = '6.68';

use Carp;
use File::Spec;
use File::Basename;
BEGIN { our @ISA = qw(File::Spec); }

# We need $Verbose
use ExtUtils::MakeMaker qw($Verbose);

use ExtUtils::MakeMaker::Config;


# So we don't have to keep calling the methods over and over again,
# we have these globals to cache the values.  Faster and shrtr.
my $Curdir  = __PACKAGE__->curdir;
my $Rootdir = __PACKAGE__->rootdir;
my $Updir   = __PACKAGE__->updir;


=head1 NAME

ExtUtils::MM_Any - Platform-agnostic MM methods

=head1 SYNOPSIS

  FOR INTERNAL USE ONLY!

  package ExtUtils::MM_SomeOS;

  # Temporarily, you have to subclass both.  Put MM_Any first.
  require ExtUtils::MM_Any;
  require ExtUtils::MM_Unix;
  @ISA = qw(ExtUtils::MM_Any ExtUtils::Unix);

=head1 DESCRIPTION

B<FOR INTERNAL USE ONLY!>

ExtUtils::MM_Any is a superclass for the ExtUtils::MM_* set of
modules.  It contains methods which are either inherently
cross-platform or are written in a cross-platform manner.

Subclass off of ExtUtils::MM_Any I<and> ExtUtils::MM_Unix.  This is a
temporary solution.

B<THIS MAY BE TEMPORARY!>


=head1 METHODS

Any methods marked I<Abstract> must be implemented by subclasses.


=head2 Cross-platform helper methods

These are methods which help writing cross-platform code.



=head3 os_flavor  I<Abstract>

    my @os_flavor = $mm->os_flavor;

@os_flavor is the style of operating system this is, usually
corresponding to the MM_*.pm file we're using.  

The first element of @os_flavor is the major family (ie. Unix,
Windows, VMS, OS/2, etc...) and the rest are sub families.

Some examples:

    Cygwin98       ('Unix',  'Cygwin', 'Cygwin9x')
    Windows        ('Win32')
    Win98          ('Win32', 'Win9x')
    Linux          ('Unix',  'Linux')
    MacOS X        ('Unix',  'Darwin', 'MacOS', 'MacOS X')
    OS/2           ('OS/2')

This is used to write code for styles of operating system.  
See os_flavor_is() for use.


=head3 os_flavor_is

    my $is_this_flavor = $mm->os_flavor_is($this_flavor);
    my $is_this_flavor = $mm->os_flavor_is(@one_of_these_flavors);

Checks to see if the current operating system is one of the given flavors.

This is useful for code like:

    if( $mm->os_flavor_is('Unix') ) {
        $out = `foo 2>&1`;
    }
    else {
        $out = `foo`;
    }

=cut

sub os_flavor_is {
    my $self = shift;
    my %flavors = map { ($_ => 1) } $self->os_flavor;
    return (grep { $flavors{$_} } @_) ? 1 : 0;
}


=head3 can_load_xs

    my $can_load_xs = $self->can_load_xs;

Returns true if we have the ability to load XS.

This is important because miniperl, used to build XS modules in the
core, can not load XS.

=cut

sub can_load_xs {
    return defined &DynaLoader::boot_DynaLoader ? 1 : 0;
}


=head3 split_command

    my @cmds = $MM->split_command($cmd, @args);

Most OS have a maximum command length they can execute at once.  Large
modules can easily generate commands well past that limit.  Its
necessary to split long commands up into a series of shorter commands.

C<split_command> will return a series of @cmds each processing part of
the args.  Collectively they will process all the arguments.  Each
individual line in @cmds will not be longer than the
$self->max_exec_len being careful to take into account macro expansion.

$cmd should include any switches and repeated initial arguments.

If no @args are given, no @cmds will be returned.

Pairs of arguments will always be preserved in a single command, this
is a heuristic for things like pm_to_blib and pod2man which work on
pairs of arguments.  This makes things like this safe:

    $self->split_command($cmd, %pod2man);


=cut

sub split_command {
    my($self, $cmd, @args) = @_;

    my @cmds = ();
    return(@cmds) unless @args;

    # If the command was given as a here-doc, there's probably a trailing
    # newline.
    chomp $cmd;

    # set aside 30% for macro expansion.
    my $len_left = 